Di 1611-2011

8/10/2019 Di 1611-2011

1/213

8/10/2019 Di 1611-2011

2/213

8/10/2019 Di 1611-2011

3/213

8/10/2019 Di 1611-2011

4/213

8/10/2019 Di 1611-2011

5/213

8/10/2019 Di 1611-2011

6/213

8/10/2019 Di 1611-2011

7/213

8/10/2019 Di 1611-2011

8/213

8/10/2019 Di 1611-2011

9/213

8/10/2019 Di 1611-2011

10/213

8/10/2019 Di 1611-2011

11/213

8/10/2019 Di 1611-2011

12/213

8/10/2019 Di 1611-2011

13/213

8/10/2019 Di 1611-2011

14/213

8/10/2019 Di 1611-2011

15/213

8/10/2019 Di 1611-2011

16/213

8/10/2019 Di 1611-2011

17/213

8/10/2019 Di 1611-2011

18/213

8/10/2019 Di 1611-2011

19/213

8/10/2019 Di 1611-2011

20/213

8/10/2019 Di 1611-2011

21/213

8/10/2019 Di 1611-2011

22/213

8/10/2019 Di 1611-2011

23/213

8/10/2019 Di 1611-2011

24/213

8/10/2019 Di 1611-2011

25/213

8/10/2019 Di 1611-2011

26/213

8/10/2019 Di 1611-2011

27/213

8/10/2019 Di 1611-2011

28/213

8/10/2019 Di 1611-2011

29/213

8/10/2019 Di 1611-2011

30/213

8/10/2019 Di 1611-2011

31/213

8/10/2019 Di 1611-2011

32/213

8/10/2019 Di 1611-2011

33/213

8/10/2019 Di 1611-2011

34/213

8/10/2019 Di 1611-2011

35/213

8/10/2019 Di 1611-2011

36/213

8/10/2019 Di 1611-2011

37/213

8/10/2019 Di 1611-2011

38/213

8/10/2019 Di 1611-2011

39/213

8/10/2019 Di 1611-2011

40/213

8/10/2019 Di 1611-2011

41/213

8/10/2019 Di 1611-2011

42/213

8/10/2019 Di 1611-2011

43/213

8/10/2019 Di 1611-2011

44/213

8/10/2019 Di 1611-2011

45/213

8/10/2019 Di 1611-2011

46/213

8/10/2019 Di 1611-2011

47/213

8/10/2019 Di 1611-2011

48/213

8/10/2019 Di 1611-2011

49/213

8/10/2019 Di 1611-2011

50/213

8/10/2019 Di 1611-2011

51/213

8/10/2019 Di 1611-2011

52/213

8/10/2019 Di 1611-2011

53/213

8/10/2019 Di 1611-2011

54/213

8/10/2019 Di 1611-2011

55/213

8/10/2019 Di 1611-2011

56/213

8/10/2019 Di 1611-2011

57/213

8/10/2019 Di 1611-2011

58/213

8/10/2019 Di 1611-2011

59/213

8/10/2019 Di 1611-2011

60/213

8/10/2019 Di 1611-2011

61/213

8/10/2019 Di 1611-2011

62/213

8/10/2019 Di 1611-2011

63/213

8/10/2019 Di 1611-2011

64/213

8/10/2019 Di 1611-2011

65/213

8/10/2019 Di 1611-2011

66/213

8/10/2019 Di 1611-2011

67/213

8/10/2019 Di 1611-2011

68/213

8/10/2019 Di 1611-2011

69/213

8/10/2019 Di 1611-2011

70/213

8/10/2019 Di 1611-2011

71/213

8/10/2019 Di 1611-2011

72/213

8/10/2019 Di 1611-2011

73/213

8/10/2019 Di 1611-2011

74/213

8/10/2019 Di 1611-2011

75/213

8/10/2019 Di 1611-2011

76/213

8/10/2019 Di 1611-2011

77/213

8/10/2019 Di 1611-2011

78/213

8/10/2019 Di 1611-2011

79/213

8/10/2019 Di 1611-2011

80/213

8/10/2019 Di 1611-2011

81/213

8/10/2019 Di 1611-2011

82/213

8/10/2019 Di 1611-2011

83/213

8/10/2019 Di 1611-2011

84/213

8/10/2019 Di 1611-2011

85/213

8/10/2019 Di 1611-2011

86/213

8/10/2019 Di 1611-2011

87/213

8/10/2019 Di 1611-2011

88/213

8/10/2019 Di 1611-2011

89/213

8/10/2019 Di 1611-2011

90/213

8/10/2019 Di 1611-2011

91/213

8/10/2019 Di 1611-2011

92/213

8/10/2019 Di 1611-2011

93/213

8/10/2019 Di 1611-2011

94/213

8/10/2019 Di 1611-2011

95/213

8/10/2019 Di 1611-2011

96/213

8/10/2019 Di 1611-2011

97/213

8/10/2019 Di 1611-2011

98/213

8/10/2019 Di 1611-2011

99/213

8/10/2019 Di 1611-2011

100/213

8/10/2019 Di 1611-2011

101/213

8/10/2019 Di 1611-2011

102/213

8/10/2019 Di 1611-2011

103/213

8/10/2019 Di 1611-2011

104/213

8/10/2019 Di 1611-2011

105/213

8/10/2019 Di 1611-2011

106/213

8/10/2019 Di 1611-2011

107/213

8/10/2019 Di 1611-2011

108/213

8/10/2019 Di 1611-2011

109/213

8/10/2019 Di 1611-2011

110/213

8/10/2019 Di 1611-2011

111/213

8/10/2019 Di 1611-2011

112/213

8/10/2019 Di 1611-2011

113/213

8/10/2019 Di 1611-2011

114/213

8/10/2019 Di 1611-2011

115/213

8/10/2019 Di 1611-2011

116/213

8/10/2019 Di 1611-2011

117/213

8/10/2019 Di 1611-2011

118/213

8/10/2019 Di 1611-2011

119/213

8/10/2019 Di 1611-2011

120/213

8/10/2019 Di 1611-2011

121/213

8/10/2019 Di 1611-2011

122/213

8/10/2019 Di 1611-2011

123/213

8/10/2019 Di 1611-2011

124/213

8/10/2019 Di 1611-2011

125/213

8/10/2019 Di 1611-2011

126/213

8/10/2019 Di 1611-2011

127/213

8/10/2019 Di 1611-2011

128/213

8/10/2019 Di 1611-2011

129/213

8/10/2019 Di 1611-2011

130/213

8/10/2019 Di 1611-2011

131/213

8/10/2019 Di 1611-2011

132/213

8/10/2019 Di 1611-2011

133/213

8/10/2019 Di 1611-2011

134/213

8/10/2019 Di 1611-2011

135/213

8/10/2019 Di 1611-2011

136/213

8/10/2019 Di 1611-2011

137/213

8/10/2019 Di 1611-2011

138/213

8/10/2019 Di 1611-2011

139/213

8/10/2019 Di 1611-2011

140/213

8/10/2019 Di 1611-2011

141/213

8/10/2019 Di 1611-2011

142/213

8/10/2019 Di 1611-2011

143/213

8/10/2019 Di 1611-2011

144/213

8/10/2019 Di 1611-2011

145/213

8/10/2019 Di 1611-2011

146/213

8/10/2019 Di 1611-2011

147/213

8/10/2019 Di 1611-2011

148/213

8/10/2019 Di 1611-2011

149/213

8/10/2019 Di 1611-2011

150/213

8/10/2019 Di 1611-2011

151/213

8/10/2019 Di 1611-2011

152/213

8/10/2019 Di 1611-2011

153/213

8/10/2019 Di 1611-2011

154/213

8/10/2019 Di 1611-2011

155/213

8/10/2019 Di 1611-2011

156/213

3-7

Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004 TROUBLESHOOTING

2.5 Misfeed Detection Timing/Troubleshooting Procedures2.5.1 Misfeed at the Paper Feed Tray/1 Paper Take-up Section

Type DescriptionPaper Take-

Up Sectionmisfeed detec-tion

The leading edge of the paper does not unblock the Synchronizing

Roller Sensor (PC1) even after the lapse of a given period of time afterthe Paper Take-up Solenoid/1 (SL1) has been energized.

Size errordetection

The Synchronizing Roller Sensor (PC1) is not blocked even after thelapse of a given period of time after the paper has unblocked the Syn-chronizing Roller Sensor (PC1).

The Synchronizing Roller Sensor (PC1) is blocked before the lapse of agiven period of time.

Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-up Solenoid/1 (SL1)

Master Board (PWB-A)

Step Operations Ref. Page

WIRING DIAGRAM

Control signalLocation

(ElectricalComponents)

1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 SL1 operation check 3-2 PWB-A PJ9A-2 (REM) H-54 Replace PWB-A

8/10/2019 Di 1611-2011

157/213

3-8

Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004TROUBLESHOOTING

2.5.2 Misfeed at the Manual Bypass Paper Take-up Section

Type DescriptionManual Bypasspaper take-upsection misfeeddetection

The leading edge of the paper does not unblock the SynchronizingRoller Sensor (PC1) even after the lapse of a given period of timeafter the Paper Take-up Solenoid/Bypass (SL2) has been energized.

Size errordetection


The Synchronizing Roller Sensor (PC1) is blocked before the lapse ofa given period of time.

Paper left at theManual Bypasspaper take-upsection

The Paper Set Sensor/Bypass (PC2) is blocked at timing when thePower Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.

Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-up Solenoid/Bypass

Paper Set Sensor/Bypass (PC2)Master Board (PWB-A)


WIRING DIAGRAM

Control signal

Location

(ElectricalComponents)1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 SL2 operation check 3-2 PWB-A PJ12A-2 (REM) F-64 PC2 sensor check 3-1 PWB-A PJ12A-5 (ON) A-25 Replace PWB-A

8/10/2019 Di 1611-2011

158/213

3-9


2.5.3 Misfeed at the Multiple Bypass Paper Take-up Section (When the optional

Multiple Bypass MB-6 is mounted)

Type DescriptionPaper take-up

section mis-feed detection


Roller Sensor (PC1) even after the lapse of a given period of time afterthe Paper Take-up Solenoid (SL21/MB) has been energized.

Size errordetection


The Synchronizing Roller Sensor (PC1) is blocked before the lapse of agiven period of time.

Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-up Solenoid (SL21/MB)



WIRING DIAGRAM



1 Initial checks

2 PC1 sensor check

3-1 PWB-A PJ17A-3 (ON) F-83 SL21/MB operation check 3-2 PWB-A PJ12A-2 (REM) D-164 Replace PWB-A

8/10/2019 Di 1611-2011

159/213

3-10


2.5.4 Misfeed at the Paper Feed Unit Paper Take-up/Vertical Transport Section

(When the optional Paper Feed Unit PF-126 is mounted)

Type DescriptionPaper take-up/

vertical trans-port sectionmisfeed detec-tion


Roller Sensor (PC1) even after the lapse of a given period of timeafter the Paper Take-up Solenoid (SL11/PF) has been energized.

Size errordetection


The Synchronizing Roller Sensor (PC1) is blocked before the lapse ofa given period of time.

Paper left at the

paper take-up/ vertical trans-port section

The Paper Take-up Sensor (PC12/PF) is blocked at timing when the

Power Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.

Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-Up Solenoid (SL11/PF)

Paper Take-Up Sensor (PC12/PF)Master Board (PWB-A)

Step Operations Ref. PageWIRING DIAGRAM



1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 SL11/PF operation check 3-2 PWB-A/PF

PJ3A/PF-1A (ON)A-3 (PF-126)

4 PC12/PF sensor check 3-1 PWB-A/PFPJ3A/PF-2B (ON)

I-6 (PF-126)

5 Replace PWB-A

8/10/2019 Di 1611-2011

160/213

3-11


2.5.5 Misfeed at the Paper Separating Section

Type Description

Paper sepa-rating sectionmisfeed detec-tion

The Exit Paper Sensor (PC3) is not blocked even after the lapse of agiven period of time after the paper has unblocked the SynchronizingRoller Sensor (PC1).


The Synchronizing Roller Sensor (PC1) is blocked before the lapse of agiven period of time after the paper has unblocked the SynchronizingRoller Sensor (PC1).

Paper left atthe paper sep-arating section

The Synchronizing Roller Sensor (PC1) is unblocked at timing whenthe Power Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.

Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Exit Paper Sensor (PC3)



WIRING DIAGRAM



1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 PC3 sensor check 3-1 PWB-A PJ15A-3 (ON) B-44 Replace PWB-A

8/10/2019 Di 1611-2011

161/213

3-12


2.5.6 Misfeed at the Fusing/Exit Section

Type DescriptionFusing/exit sec-tion misfeeddetection

The Exit Paper Sensor (PC3) is not unblocked even after the lapse ofa given period of time after the Synchronizing Roller Sensor (PC1) hasbeen blocked.

Paper left at thefusing/exit sec-tion

The Exit Paper Sensor (PC3) is blocked at timing when the PowerSwitch is turned ON, the cover is opened and closed, or a paper mis-feed or malfunction is reset.

Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Exit Paper Sensor



WIRING DIAGRAM



1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 PC3 sensor check 3-1 PWB-A PJ15A-3 (ON) B-44 Replace PWB-A

8/10/2019 Di 1611-2011

162/213

3-13


2.5.7 Misfeed at the Document Take-up Section (When the optional Automatic

Document Feeder AF-12 is mounted)

Type DescriptionDocument

take-up sectionmisfeed detec-tion

The Separator Sensor (PC4/AF) is not blocked even after the lapse of

a given period of time after the Main Motor (M1/AF) has been ener-gized.

Document leftin the docu-ment take-upsection

The Separator Sensor (PC4/AF) is blocked at timing when the PowerSwitch is turned ON, the cover is opened and closed, or a paper mis-feed or malfunction is reset.

Relevant Electrical ComponentsMain Motor (M1/AF)Separator Sensor (PC4/AF)

Interface Board (PWB/AF)


WIRING DIAGRAM



1 Initial checks

2 M1/AF operation check

3-3 D-6 (AF-12)3 PC4/AF sensor check 3-1 PWB/AF CN2/AF-9 (ON) I-4 (AF-12)4 Replace PWB/AF

8/10/2019 Di 1611-2011

163/213

3-14


2.5.8 Misfeed at the Document Transport Section (When the optional Automatic

Document Feeder AF-12 is mounted)

Type DescriptionDocument

transport sec-tion misfeeddetection

The Registration Sensor (PC3/AF) is not blocked even after the lapse

of a given period of time after the Main Motor (M1/AF) has been ener-gized.

Document leftin the docu-ment transportsection

The Registration Sensor (PC3/AF) is blocked at timing when thePower Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.

Relevant Electrical ComponentsMain Motor (M1/AF)Registration Sensor (PC3/AF)



WIRING DIAGRAM



1 Initial checks

2 M1/AF operation check

3-3 D-6 (AF-12)3 PC3/AF sensor check 3-1 PWB/AF CN2/AF-6 (ON) H-4 (AF-12)4 Replace PWB/AF

8/10/2019 Di 1611-2011

164/213

3-15


2.5.9 Misfeed at the Document Exit Section (When the optional Automatic Docu-

ment Feeder AF-12 is mounted)

Type DescriptionDocument exit

section mis-feed detection

The Paper Exit Sensor (PC5/AF) is not blocked even after the lapse of

a given period of time after the Main Motor (M1/AF) has been ener-gized.Document leftin the docu-ment exit sec-tion

The Paper Exit Sensor (PC5/AF) is blocked at timing when the PowerSwitch is turned ON, the cover is opened and closed, or a paper mis-feed or malfunction is reset.

Relevant Electrical ComponentsMain Motor (M1/AF)Paper Exit Sensor (PC5/AF)



WIRING DIAGRAM



1 Initial checks 2 M1/AF operation check 3-3 D-6 (AF-12)

3 PC5/AF sensor check 3-1 PWB/AF CN2/AF-12 (ON) H-6 (AF-12)4 Replace PWB/AF

8/10/2019 Di 1611-2011

165/213

3-16


3. MALFUNCTIONS The copiers CPU performs a self-diagnostics function that, on detecting a malfunction,

gives the corresponding malfunction code and maintenance call mark on the TouchPanel.

3.1 List of Malfunction CodesMalfunc-

tionCode

Malfunction Name Detection Timing

C0000 Main Motor mal-function

The Main Motor (M1) Lock signal remains HIGH for acontinuous 1-sec. period at any time 1 sec. after theMain Motor has started turning.

C0044

ADF Cooling FanFailure (Only whenthe optional AFR-19 is mounted)

Refer to the option service manual (AFR-19) for details.

C0045 Fusing Cooling FanMotor malfunction

The Fusing Cooling Fan Motor (M3) Lock signal remainsHIGH for a continuous 1-sec. period while the FusingCooling Fan Motor is turning at full speed or deceleratedspeed.

C004EPower Supply Cool-ing Fan Motor mal-function

The Power Supply Cooling Fan Motor (M4) Lock signalremains HIGH for a continuous 1-sec. period while thePower Supply Cooling Fan Motor Remote signalremains ON (for full-speed rotation) or OFF (for deceler-ated-speed rotation).

C0070Toner Replenish-ing Motor malfunc-tion

The Toner Bottle Home Position Sensor (PC7) outputs aHIGH signal for a continuous 3.5-sec. period while theToner Bottle is turning.

The Toner Bottle Home Position Sensor (PC7) outputs aLOW signal for a continuous 2-sec. period while theToner Bottle is turning.

C0210 Abnormal imagetransfer voltage

The image transfer voltage remains more than 100 Vcontinuously for a given period of time while the PCDrum remains stationary.

C03FF Faulty Model Set-ting Model Setting of Adjust available from the Service

mode is incorrectly set.

4980P550DA

8/10/2019 Di 1611-2011

166/213

3-17


C0500 Warm-up failure

The surface temperature of the Fusing Roller does notreach a given level even after the lapse of a given periodof time during a warm-up cycle. From room temperature to 100C: 35 sec.

From 100C to 140C: 25 sec. From 140C to the completion ofthe warm-up cycle: 20 sec.

C0500

Warm-up failure(for the model hav-ing two FusingRoller HeaterLamps)

Di2011 Only

The Fusing Roller Thermistor does not detect a prede-termined temperature within 30 sec. after a warm-upcycle has been started and thus the warm-up cycle isnot completed.

The surface temperature of the Fusing Roller does notreach a given level even after the lapse of a given periodof time during a warm-up cycle.

From room temperature to 60C: 4 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.

C0501

Warm-up failure 2(for the model hav-ing two FusingRoller Heater

Lamps) Di2011 Only

The Fusing Roller Sub Thermistor does not detect apredetermined temperature within 30 sec. after a warm-up cycle has been started and thus the warm-up cycle isnot completed.

The surface temperature of the Fusing Roller does notreach a given level even after the lapse of a given period

of time during a warm-up cycle.

From room temperature to 60C: 7 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.

C0510Fusing failure(abnormally lowfusing temperature)

The temperature detected by the Fusing Roller Ther-mistor remains lower than 120C (105C for the modelhaving two Fusing Roller Heater Lamps) for a givenperiod of time during the standby state.

The temperature detected by the Fusing Roller Ther-mistor remains lower than 120C (105C for the modelhaving two Fusing Roller Heater Lamps) for a givenperiod of time during a print cycle.

C0511

Fusing failure(abnormally lowfusing temperature2)

Di2011 Only

The temperature detected by the Fusing Roller SubThermistor remains lower than 105C for a given periodof time during the standby state.

The temperature detected by the Fusing Roller SubThermistor remains lower than 105C for a given periodof time during a print cycle.

C0520Fusing failure(abnormally highfusing temperature)

The temperature detected by the Fusing Roller Ther-mistor remains higher than 240C for a given period oftime.

Malfunc-tion

CodeMalfunction Name Detection Timing

8/10/2019 Di 1611-2011

167/213

3-18


C0521

Fusing failure(abnormally highfusing temperature2)

Di2011 Only

The temperature detected by the Fusing Roller SubThermistor remains higher than 240C for a given periodof time.

C0650Faulty ScannerHome PositionSensor

The Scanner Home Position Sensor (PC10) does not gofrom HIGH to LOW when the Scanner Motor (M5) isenergized for a given number of steps after thesequence to bring the Scanner back to its home positionhas been started at the end of a scan motion and duringre-shading.

The Scanner Home Position Sensor (PC10) does not gofrom LOW to HIGH when the Scanner Motor (M5) is

energized for a given number of steps after a scanmotion has been started at the end of a Scanner HomePosition Sensor home check scan motion and during re-shading.

C0B60

Bin SwitchingMotor malfunction(Only when theoptional JS-204 ismounted)

Refer to the option service manual (JS-204) for details.

C0B80

Shift Motor mal-

function(Only when theoptional OT-103 ismounted)

Refer to the option service manual (OT-103) for details.

C0F32 Faulty ATDC Sen-sor

The measurement taken by the ATDC Sensor (UN1) ata time 2.0 sec. after the Main Motor (M1) has startedturning is less than 5% (greater than 4.63 V).

The measurement taken by the ATDC Sensor (UN1) ata time 2.0 sec. after the Main Motor (M1) has startedturning is 19% or more (1.41 V or less).

C0F33Improperlyadjusted ATDCSensor

The adjustment of the ATDC control voltage is not com-pleted within 1 sec. after sampling has started of theATDC Sensor (UN1) as part of an operation of ATDCSensor Automatic Adjustment.

The ATDC Sensor control voltage falls outside the rangeof 5.39 V to 8.15 V during an operation of ATDC SensorAutomatic Adjustment.

Malfunc-tion


8/10/2019 Di 1611-2011

168/213

3-19


C1038 Engine connectionfailure

Master Board (PWB-A) to Control Board (PWB-C/C) con-nection failure There is no acknowledge signal transmitted from the

Master Board (PWB-A) to Control Board (PWB-C/C) for1.5 sec. or more.

An error command signal is transmitted from the ControlBoard (PWB-C/C) to Master Board (PWB-A).

An error status signal is transmitted from the MasterBoard (PWB-A) to Control Board (PWB-C/C).

C1200 Faulty ASIC/mem-ory

ASIC/memory (for image and control) fault A write or read error occurs with SRAM on the Control

Board (PWB-C/C).

C1300 Polygon Motor mal-function

Startup failure A LOW Polygon Motor (M2) Lock signal is not detected

within a given period of time that begins 1 sec. after thePolygon Motor has started turning.

Lock signal fault: Unstable after the first Lock signal hasbeen detected For a period of 1 sec. after the first LOW Polygon Motor

(M2) Lock signal (first Lock) has been detected, the nextLOW Polygon Motor Lock signal is not detected.

Lock signal fault: Lock signal out-of-timing A LOW Polygon Motor (M2) Lock signal is not detected

for a continuous given period of time while the rotation

of the Polygon Motor remains stabilized.Faulty Lock signal A LOW Polygon Motor (M2) Lock signal is detected for a

given period of time or more when the Polygon Motorremains deenergized.

C133B Communicationwith option error

It is not possible to communicate with the Printer Boardwithin a predetermined period of time during a printcycle.

C133D ROM check error An error is detected of the flash ROM chip on the FaxBoard when the Power Switch is turned ON.

C13F0 Faulty HSYNC

Laser scanning system malfunction The SOS Sensor does not detect a rising edge of SOS

within a given period of time after the Polygon Motor(M2) has started turning and a laser output has beenstarted.

The SOS Sensor detects no rising edges of SOS whileVIA (image area control) is ON.

C1468 Faulty EEPROMEEPROM fault Data cannot be written in EEPROM. Data stored in EEPROM is wrong.

C14A3 IR fluorescent lampfaultThe Exposure Lamp (LA2) of the Scanner fails to turn ON. The intensity of the Exposure Lamp is a predetermined

value or less during shading and re-shading.

Malfunc-tion


8/10/2019 Di 1611-2011

169/213

3-20


3.2 Resetting Procedure by Malfunction Code

Code Description ProcedureC0000 Main Motor malfunction Turn OFF and ON the Power Switch.C0044 ADF Cooling Fan FailureC0045 Fusing Cooling Fan Motor malfunction

C004E Power Supply Cooling Fan Motor mal-functionC0070 Toner Replenishing Motor malfunctionC0210 Abnormal image transfer voltage

C03FF Faulty Model Setting

Make the correct setting for ModelSetting of Adjust available from theService mode.

2-39C0500 Warm-up failure Turn ON the Power Switch with the

Stop key held down.C0501 Warm-up failure 2

C0510 Fusing failure (abnormally low fusingtemperature)

C0511 Fusing failure (abnormally low fusingtemperature 2)

C0520 Fusing failure (abnormally high fusingtemperature)

C0521 Fusing failure (abnormally high fusingtemperature 2)C0650 Faulty Scanner Home Position Sensor Turn OFF and ON the Power Switch.C0B60 Bin Switching Motor malfunctionC0B80 Shift Motor malfunctionC0F32 Faulty ATDC SensorC0F33 Improperly adjusted ATDC SensorC1038 Engine connection failureC1200 Faulty ASIC/memoryC1300 Polygon Motor malfunctionC133B Communication with option errorC133D ROM check errorC13F0 Faulty HSYNCC1468 Faulty EEPROMC14A3 IR fluorescent lamp fault

8/10/2019 Di 1611-2011

170/213

3-21


3.3 Malfunction Detection Timing and Troubleshooting Proce-

dure(1) C0000 Main Motor malfunction

TroubleCode Description

C0000 The Main Motor (M1) Lock signal remains HIGH for a continuous 1-sec. period at any time 1 sec. after the Main Motor has started turning.

Relevant Electrical ComponentsMain Motor (M1) Master Board (PWB-A)

Power Supply Unit (PU1)

Step Operations Ref.Page

WIRING DIAGRAM



1 Check M1 connectors for proper con-nection and correct as necessary.

2 Check M1 for correct drive couplingand correct as necessary.

3 M1 operation check. 3-3 I-144 Change PWB-A. 5 Change PU1.

8/10/2019 Di 1611-2011

171/213

3-22


(2) C0044 ADF Cooling Fan Failure

(When the optional Duplexing Document Feeder AFR-19 is mounted)


C0044 The ADF Fan Motor Lock signal remains set to H for a set period oftime while the EDH Fan Motor is turning.

Relevant Electrical ComponentsCooling Fan Motor (M3-ADF) Main Control Board (PBA-CONT)

Step Operations Ref.

Page

WIRING DIAGRAM



1 Check the motor connectors forpaper connection, and correct asnecessary.

2 Check the fan for possible overload,and correct as necessary.

3 M3-ADF operation check. 3-3 PBA-CONTCN9CONT-2 (REM)

E-5 (AFR-19)

4 Replace PBA-CONT.

8/10/2019 Di 1611-2011

172/213

3-23


(3) C0045 Fusing Cooling Fan Motor Malfunction


C0045 The Fusing Cooling Fan Motor (M3) Lock signal remains HIGH for a

continuous 1-sec. period while the Fusing Cooling Fan Motor is turn-ing at full speed or decelerated speed.

Relevant Electrical ComponentsFusing Cooling Fan Motor (M3) Master Board (PWB-A)



WIRING DIAGRAM

Control signal Location(ElectricalComponents)


2 Check the fan for possible overloadand correct as necessary.

3 M3 operation check 3-3 PWB-A PJ22A-1(REM)

C-2

4 Change PWB-A. 5 Change PU1.

8/10/2019 Di 1611-2011

173/213

3-24


(4) C004E Power Supply Cooling Fan Motor Malfunction


C004E

The Power Supply Cooling Fan Motor (M4) Lock signal remains HIGHfor a continuous 1-sec. period while the Power Supply Cooling FanMotor Remote signal remains ON (for full-speed rotation) or OFF (fordecelerated-speed rotation).

Relevant Electrical ComponentsPower Unit Cooling Fan Motor (M4) Master Board (PWB-A)



WIRING DIAGRAM




2 Check the fan for possible overloadand correct as necessary.

3 M4 operation check 3-3 PU1 CN7PU1-1(REM)

F-12


8/10/2019 Di 1611-2011

174/213

3-25


(5) C0070 Toner Replenishing Motor Malfunction


C0070

The Toner Bottle Home Position Sensor (PC7) outputs a HIGH signalfor a continuous 3.5-sec. period while the Toner Bottle is turning.

The Toner Bottle Home Position Sensor (PC7) outputs a LOW signalfor a continuous 2-sec. period while the Toner Bottle is turning.

Relevant Electrical ComponentsToner Replenishing Motor (M6)Toner Bottle Home Position Sensor (PC7)

Master Board (PWB-A)Power Supply Unit (PU1)


WIRING DIAGRAM





3 M6 operation check 3-3 PWB-A PJ16A-1(REM)

B-8

4 PC7 sensor check 3-1 PWB-A PJ16A-5(ON)

B-8


8/10/2019 Di 1611-2011

175/213

3-26


(6) C0210 Abnormal Image Transfer Voltage


C0210 The image transfer voltage remains more than 100 V for a continuousgiven period of time while the PC Drum remains stationary.

Relevant Electrical ComponentsImage Transfer RollerHigh Voltage Unit (HV1)



Page

WIRING DIAGRAM

Control signal

Location

(ElectricalComponents)1 Check the Image Transfer Roller for

installation.

2 Change HV1. 3 Change PWB-A.

8/10/2019 Di 1611-2011

176/213

3-27


(7) C0500 Warm-up Failure

C0501 Warm-up Failure 2 (Di2011 Only)

C0510 Fusing Failure (Abnormally Low Fusing Temperature)

C0511 Fusing Failure (Abnormally Low Fusing Temperature 2) (Di2011 Only)

C0520 Fusing Failure (Abnormally High Fusing Temperature)

C0521 Fusing Failure (Abnormally High Fusing Temperature 2) (Di2011 Only)


C0500

The surface temperature of the Fusing Roller does not reach a given leveleven after the lapse of a given period of time during a warm-up cycle. From room temperature to 100C: 35 sec. From 100C to 140C: 25 sec. From 140C to the completion of the warm-up cycle: 20 sec.

C0500

The Fusing Roller Thermistor does not detect a predetermined tempera-ture within 30 sec. after a warm-up cycle has been started and thus thewarm-up cycle is not completed.

The surface temperature of the Fusing Roller does not reach a given leveleven after the lapse of a given period of time during a warm-up cycle. From room temperature to 60C: 4 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.

C0501

The Fusing Roller Sub Thermistor does not detect a predetermined tem-perature within 30 sec. after a warm-up cycle has been started and thusthe warm-up cycle is not completed.

The surface temperature of the Fusing Roller does not reach a given leveleven after the lapse of a given period of time during a warm-up cycle. From room temperature to 60C: 7 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.

C0510

The surface temperature of the Fusing Roller remains lower than 120C(105C for the model having two Fusing Roller Heater Lamps) for a givenperiod of time during the standby state.

The surface temperature of the Fusing Roller remains lower than 120C(105C for the model having two Fusing Roller Heater Lamps) for a givenperiod of time during a print cycle.

C0511

The temperature detected by the Fusing Roller Sub Thermistor remainslower than 105C for a given period of time during the standby state.

The temperature detected by the Fusing Roller Sub Thermistor remainslower than 105C for a given period of time during a print cycle.

C0520 The temperature detected by the Fusing Roller Thermistor remains higherthan 240C for a given period of time.

C0521 The temperature detected by the Fusing Roller Sub Thermistor remainshigher than 240C for a given period of time.

8/10/2019 Di 1611-2011

177/213

3-28


Relevant Electrical Components

Fusing Roller Heater Lamp (H1)Fusing Roller Sub Heater Lamp (H2)Fusing Roller ThermistorFusing Roller Sub Thermistor (TH2)

Fusing Roller Thermostat (TS1)Fusing Unit Interlock Switch (S2)Power Supply Unit (PU1)Master Board (PWB-A)


WIRING DIAGRAM



1 Check that the Fusing Roller HeaterLamp (H1) turns ON when the PowerSwitch is turned ON and correct orreplace the lamp as necessary.

2 Check that the Fusing Roller SubHeater Lamp (H2) turns ON when thePower Switch is turned ON and corrector replace the lamp as necessary.

3 Check the Fusing Roller Thermostat(TS1) for operation.Check the resistance of TS1. TS1 isopen-circuited if its resistance is infinity.

F-2

4 Check the Fusing Unit Interlock Switch

(S2) for operation.Check continuity across the followingterminals when S2 is ON. Across S2-1A and S2-1B Across S2-2A and S2-2B

E-16

5 Check the Fusing Roller Thermistor(TH1) and Fusing Roller Sub Thermistor(TH2) for installation and correct orclean as necessary.

6 Check the Fusing Roller Thermistor(TH1) for operation.Disconnect CN15 (4P) and check theresistance across CN15-2 and 3 on theThermistor side. TH1 is open-circuited ifthe resistance is infinity.

D-2

8/10/2019 Di 1611-2011

178/213

3-29


7 Check the Fusing Roller Sub Thermistor(TH2) for operation.

Disconnect CN22 (4P) and check theresistance across CN22-2 and 3 on theThermistor side. TH2 is open-circuited ifthe resistance is infinity.

D-2

8 Check the Fusing Roller Heater Lamp(H1) for continuity and correct or replaceas necessary.

9 Check the Fusing Roller Sub HeaterLamp (H2) for continuity and correct or

replace as necessary.

10 Change PU1. 11 Change PWB-A.


WIRING DIAGRAM



8/10/2019 Di 1611-2011

179/213

3-30


(8) C0650 Faulty Scanner Home Position Sensor


C0650

The Scanner Home Position Sensor (PC10) does not go from HIGHto LOW when the Scanner Motor (M5) is energized for a given num-ber of steps after the sequence to bring the Scanner back to its homeposition has been started at the end of a scan motion and during re-shading.

The Scanner Home Position Sensor (PC10) does not go from LOW toHIGH when the Scanner Motor (M5) is energized for a given numberof steps after a scan motion has been started at the end of a ScannerHome Position Sensor home check scan motion and during re-shad-ing.

Relevant Electrical ComponentsScanner Motor (M5)Scanner Home Position Sensor (PC10)

Control Board (PWB-C/C)


WIRING DIAGRAM





3 M5 operation check 3-3 B-114 Scanner operation check 5 PC10 sensor check 3-1 PWB-C/C

P114C/C-3 (ON)B-13

6 Change PWB-C/C.

8/10/2019 Di 1611-2011

180/213

3-31


(9) C0F32 Faulty ATDC Sensor

C0F33 Improperly Adjusted ATDC Sensor


C0F32

The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec.after the Main Motor (M1) has started turning is less than 5% (greaterthan 4.63 V).

The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec.after the Main Motor (M1) has started turning is 19% or more (1.41 Vor less).

C0F33

The adjustment of the ATDC control voltage is not completed within 1sec. after sampling has started of the ATDC Sensor (UN1) as part ofan operation of ATDC Sensor Automatic Adjustment.

The ATDC Sensor control voltage falls outside the range of 5.39 V to8.15 V during an operation of ATDC Sensor Automatic Adjustment.

Relevant Electrical ComponentsATDC Sensor (UN1) Master Board (PWB-A)



Page

WIRING DIAGRAM

Control signal

Location

(ElectricalComponents)1 Check to see if developer is avail-

able.

2 Check the ATDC Sensor connectorsfor proper connection and correct asnecessary.

3 Change UN1. 4 Run ATDC Auto Adjust. 2-46


8/10/2019 Di 1611-2011

181/213

3-32


(10) C1038 Engine Connection Failure

Trouble Code Description

C1038

Master Board (PWB-A) to Control Board (PWB-C/C) connection failure There is no acknowledge signal transmitted from the Master Board

(PWB-A) to Control Board (PWB-C/C) for 1.5 sec. or more. An error command signal is transmitted from the Control Board (PWB-

C/C) to Master Board (PWB-A). An error status signal is transmitted from the Master Board (PWB-A)

to Control Board (PWB-C/C).

Relevant Electrical ComponentsMaster Board (PWB-A) Control Board (PWB-C/C)


WIRING DIAGRAM



1 Turn OFF and ON the Power Switch. 2 Check the PWB-A connectors for

proper connection and correct asnecessary.

3 Check the PWB-C/C connectors forproper connection and correct asnecessary.

4 Check for proper connectionbetween PWB-A and PWB-C/C andcorrect as necessary.

5 Change PWB-A. 6 Change PWB-C/C.

8/10/2019 Di 1611-2011

182/213

3-33


(11) C1200 Faulty ASIC/Memory


C1200 ASIC/memory (for image and control) fault A write or read error occurs with SRAM on the Control Board (PWB-C/C).

Relevant Electrical ComponentsControl Board (PWB-C/C)


WIRING DIAGRAM


(Electrical

Components)1 Turn OFF and ON the Power Switch. 2 Check memory on PWB-C/C for con-

nection and correct as necessary.

3 Change PWB-C/C.

8/10/2019 Di 1611-2011

183/213

3-34


(12) C1300 Polygon Motor Malfunction

C13F0 Faulty HSYNC


C1300

Startup failure A LOW Polygon Motor (M2) Lock signal is not detected within a givenperiod of time that begins 1 sec. after the Polygon Motor has startedturning.

Lock signal fault: Unstable after the first Lock signal has been detected For a period of 1 sec. after the first LOW Polygon Motor (M2) Lock

signal (first Lock) has been detected, the next LOW Polygon MotorLock signal is not detected.

Lock signal fault: Lock signal out-of-timing A LOW Polygon Motor (M2) Lock signal is not detected for a continu-

ous given period of time while the rotation of the Polygon Motorremains stabilized.Faulty Lock signal A LOW Polygon Motor (M2) Lock signal is detected for a given period

of time or more when the Polygon Motor remains deenergized.

C13F0

Laser scanning system malfunction The SOS Sensor does not detect a rising edge of SOS within a given

period of time after the Polygon Motor (M2) has started turning and alaser output has been started.

The SOS Sensor detects no rising edges of SOS while VIA (image

area control) is ON.

Relevant Electrical ComponentsPH Unit Master Board (PWB-A)


WIRING DIAGRAM



1 Turn OFF and ON the Power Switch. 2 Check for proper connection

between the PH Unit and MasterBoard and correct as necessary.

3 Change the PH Unit. 4 Change PWB-A.

8/10/2019 Di 1611-2011

184/213

3-35


(13) C133B Communication with Option Error

C133D ROM Check Error

For detailed corrective action, see the Service Manual for Fax.

(14) C1468 Faulty EEPROM


C133B It is not possible to communicate with the Printer Board within a pre-determined period of time during a print cycle.

C133D An error is detected of the flash ROM chip on the Fax Board when thePower Switch is turned ON.


C1468EEPROM fault Data cannot be written in EEPROM. Data stored in EEPROM is wrong.


Master Board (PWB-A) EEPROM (U16)


WIRING DIAGRAM



1 Turn OFF the Power Switch andunplug the power cord. Then, plug inthe power cord and turn ON thePower Switch again.

2 Check EEPROM (U16) on PWB-C/Cfor proper connection and correct asnecessary.

3 Change PWB-A. 4 Change EEPROM. 1-57

8/10/2019 Di 1611-2011

185/213

3-36


(15) C14A3 IR Fluorescent Lamp Fault


C14A3The Exposure Lamp (LA2) of the Scanner fails to turn ON. The intensity of the Exposure Lamp is a predetermined value or less

during shading and re-shading.

Relevant Electrical ComponentsExposure Lamp (LA2)Inverter Board (PU2)

CCD Board (PWB-J)Control Board (PWB-C/C)


WIRING DIAGRAM

Control signal Location(ElectricalComponents)

1 Check that the Exposure Lamp (LA2)turns ON when the Power Switch isturned ON and correct or replace asnecessary.

2 Check connectors on PU2 for properconnection and correct as necessary.

3 Check connectors on PWB-J forproper connection and correct asnecessary.

4 Change PWB-C/C.

8/10/2019 Di 1611-2011

186/213

3-37


3.4 Miscellaneous Errors3.4.1 Flash ROM Error

The copier determines that there is an error if writing to the flash ROM fails duringupgrading of the firmware.

When the Power Switch is turned ON, the Error indicator lights up steadily and a corre-sponding message appears on the Display.

If this error message appears, no operations can then be performed. It is not possible toupgrade the firmware from a PC connected through USB connection, either.


Master Board (PWB-A) Control Panel (UN4)Control Board (PWB-C/C) EEPROM (U16)


WIRING DIAGRAM



1 Check the connection status of con-nectors on each board (PWB-A,PWB-C/C, UN4): If there is anyabnormality, correct it.

2 Identify the specific firmware that isresponsible for the error.

3 Perform upgrading of the firmwarethrough BIOS.

1-64

4 Unplug EEPROM (U16) from PWB-C/C and then plug it back in.

5 Change PWB-C/C.

4035T506CA 4035T507CA 4035T508CA 4035T509CA

8/10/2019 Di 1611-2011

187/213

3-38


3.5 Power Source-Related Malfunctions(1) The copier does not turn ON.

Step Check Result Action1 A malfunction code appears when the

Power Switch is turned ON.YES Go to step 2.NO Go to step 3.

2 The malfunction is temporarily resetwhen the Power Switch is turned OFFand ON with the Stop key held down.

YES Perform the troubleshoot-ing procedure accordingto the malfunction code.

3 Power supply voltage checkCheck voltage across pins of DC PowerSupply (PU1) when the Power Switch isturned ON. Voltage across CN1PU1-1 and

CN1PU1-2 AC0 V when the Power Switch is OFF Rated AC voltage when the PowerSwitch is turned ON

NO Check wall outlet for volt-age.

Check power cord forcontinuity.

Check Power Switch.

4 Check of output of DC24 V to ControlBoard (copier: PWB-C)Check voltage across a Control Board(copier: PWB-C) pin and GND when thePower Switch is turned ON. Voltage across P110C/C-1 and GND Voltage across P110C/C-2 and GND

DC0 V when the Power Switch is OFF DC24 V when the Power Switch isturned ON

NO Check Front Door Inter-lock Switch (S3).

Check Right Door Inter-lock Switch (S4).

Change DC power Sup-ply (PU1).

5 Check of output of DC24 V to MasterBoard (copier: PWB-A)Check voltage across a Master Board(copier: PWB-A) pin and GND when thePower Switch is turned ON. Voltage across PJ2A-2 and GND DC0 V when the Power Switch is OFF

DC24 V when the Power Switch isturned ON

NO Check Front Door Inter-lock Switch (S3).

Check Right Door Inter-lock Switch (S4).


8/10/2019 Di 1611-2011

188/213

3-39


6 Check of output of DC 5 V to MasterBoard (copier: PWB-A)Check voltage across a Master Board(copier: PWB-A) pin and GND when thePower Switch is turned ON. Voltage across PJ6A-9 and GND


NO Change DC power Sup-ply (PU1).

7 Check of output of DC5 V to controlpanel (UN2)Check voltage across a Control Board(copier: PWB-C) pin and GND when thePower Switch is turned ON. Voltage across P102C/C-1 and GND


NO Check Control Board(copier: PWB-C).

Change Master Board(copier: PWB-A).


YES Change Control Panel(UN4).

Step Check Result Action

8/10/2019 Di 1611-2011

189/213

3-40


4. IMAGE FAILURE4.1 Image Failure Troubleshooting

In this chapter, troubleshooting is divided into initial checks and troubleshooting proce-dures classified by image failures.

If any image failure has occurred, first make the initial checks, then proceed to the corre-sponding image failure troubleshooting procedure.

4.2 Initial Checks

Determine if the failure is attributable to a basic cause or causes.Section Step Check Result Action

Installationsite

1 The installation site com-plies with the requirements

specified in PRECAUTIONSFOR INSTALLATION con-tained in GENERAL.

NO Change the installationsite.

Paper 2 Paper meets product specifi-cations.

NO Change paper for one thatmeets specifications.

Instruct user to use paperthat meets specificationsand is recommended.

3 Paper is damp. YES Change paper for one thatis dry.

Then, instruct user to usepaper that meets specifi-cations and in how tostore paper.

Original 4 Original is placed correctly. NO Reposition original. Instruct user in how to

place original correctly.5 Original is written in light

pencil.YES Change original.

Instruct user to use origi-nal with appropriate imagedensity.

6 Original is transparent (OHPtransparencies, etc.).

YES Change original. Instruct user to use origi-

nals that meet specifica-tions.

7 Original Glass is dirty. YES Clean Original Glass.8 Original Glass is scratchy. YES Change Original Glass.

PM parts 9 The PM parts relating toimage formation have

reached the end of cleaning/ replacement cycles.

YES Clean PM parts. Change PM parts.

8/10/2019 Di 1611-2011

190/213

3-41


4.3 Identification of the Faulty System Determine if the failure is attributable to an input system (IR) or output system (engine).

Check Result Action

Copy made at a reducedratio Input system

(IR)

Output system(printer)

1177T03YA

1177T04YA

Full-size Reduced

1177T05YA

Full-size Reduced

8/10/2019 Di 1611-2011

191/213

3-42


4.4 Troubleshooting Procedures by Image Failure4.4.1 Image Reading Section: Blank copy

Step Check Result Action1 CCD Board (PWB-J) connector is loose. YES Reconnect.2 Control Board (PWB-C) connector is loose. YES Reconnect.

NO Change ControlBoard (PWB-C/C).

Change MasterBoard (PWB-A).

4011T035AA

8/10/2019 Di 1611-2011

192/213

3-43


4.4.2 Image Reading Section: black copy

Step Check Result Action1 Exposure Lamp turns ON when the Power Switch

is turned ON.NO Go to step 3.

2 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Power Switch is turned ON. NO Go to step 4.

3 Inverter Board (PU2) connector is loose. YES Reconnect.NO Change Exposure

Lamp.4 CCD Board (PWB-J) connector is loose. YES Reconnect.5 Control Board (PWB-C/C) connector is loose. YES Reconnect.

NO Change InverterBoard (PU2).

Change CCD Unit. Change ControlBoard (PWB-C/C).

4011T036AA

8/10/2019 Di 1611-2011

193/213

8/10/2019 Di 1611-2011

194/213

3-45


4.4.4 Image Reading Section: Foggy background or rough image

Step Check Result Action1 Original Glass is dirty. YES Clean.2 Scanner mirrors are dirty. YES Clean.

3 Exposure Lamp (LA2) is dirty. YES Clean.4 CCD Unit lens and CCD surface are dirty.

Remove lens cover to check for possible contami-nation.

YES Clean.

5 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Start key is pressed.

NO Go to step 7.

6 Inverter Board (copier: PU2) connector is loose. YES Reconnect.NO Change Exposure

Lamp (LA2).7 CCD Board (copier: PWB-J) connector is loose. YES Reconnect.

NO Change InverterBoard (PU2).

Change ControlBoard (copier: PWB-C).

4011T004AA

8/10/2019 Di 1611-2011

195/213

3-46


4.4.5 Image Reading Section: Black streaks or bands

Step Check Result Action1 Original Glass is dirty, scratchy, worn, or damaged. YES Clean or change.2 Shading sheet reading portion (the portion on the

backside of the Original Glass to which OriginalWidth Scale is affixed) is dirty.

YES Clean.

3 Scanner mirrors are dirty, scratchy, or damaged. YES Clean or change.4 Exposure Lamp (LA2) is dirty. YES Clean or change.5 CCD Unit lens and CCD surface are dirty or

scratchy.Remove lens cover to check for possible contami-nation.

YES Clean or change.

6 CCD Board (PWB-J) connector is loose. YES Reconnect.7 Control Board (PWB-C/C) connector is loose. YES Reconnect.

NO Change CCD Unit. Change Control

Board (PWB-C/C).

4011T017AA 4011T023AA

8/10/2019 Di 1611-2011

196/213

3-47


4.4.6 Image Reading Section: Black spots

Step Check Result Action1 Original Glass is dirty or scratchy. YES Clean.2 CCD Board (PWB-J) connector is loose. YES Reconnect.

3 Control Board (PWB-C/C) connector is loose. YES Reconnect.NO Change CCD Unit.

Change ControlBoard (PWB-C/C).

4011T521AA

8/10/2019 Di 1611-2011

197/213

3-48


4.4.7 Image Reading Section: Blank streaks or bands



YES Clean.

3 Scanner mirrors are dirty, scratchy, or damaged. YES Clean or change.4 CCD Unit lens and CCD surface are dirty or





Board (PWB-C/C).

4011T015AA 4011T020AA

8/10/2019 Di 1611-2011

198/213

3-49


4.4.8 Image Reading Section: Uneven image density



YES Clean.




6 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Power Switch is turned ON.

NO Go to step 8.

7 Inverter Board (PU2) connector CN1PU2 is loose. YES Reconnect.NO Change Exposure

Lamp (LA2).8 CCD Board (PWB-J) connector is loose. YES Reconnect.9 Control Board (PWB-C/C) connector is loose. YES Reconnect.


Board (PWB-C/C).

4011T525AA

8/10/2019 Di 1611-2011

199/213

3-50


4.4.9 Image Reading Section: Gradation reproduction failure



YES Clean.




6 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Start key is pressed.

NO Go to step 8.

7 Inverter Board (PU2) connector CN2PU2 is loose. YES Reconnect.NO Change Exposure

Lamp (LA2).8 CCD Board (PWB-J) connector is loose. YES Reconnect.9 Control Board (PWB-C/C) connector is loose. YES Reconnect.


Board (copier: PWB-C/C).

4011T526AA

8/10/2019 Di 1611-2011

200/213

3-51


4.4.10 Image Reading Section: Periodically uneven image

Step Check Result Action1 Scanner Motor (M5) is securely fastened using the

dedicated fixing screws.NO Secure in position.

2 Scanner Motor (M5) drive mechanism is dirty ordamaged. YES Clean or change.

4 Scanner drive mechanism pulley is dirty with for-eign matter, scratchy, deformed, worn, or dam-aged.

YES Remove foreignmatter or change.

5 Scanner Drive Cables are wound incorrectly. YES Re-wind ScannerDrive Cables.

6 Scanner rails and bushings are dirty with foreignmatter, scratchy, deformed, worn, or damaged.


7 Scanner moves smoothly.Gently move the Scanner by hand to check forsmooth operation.

NO Lubricate the Scan-ner rails.

Reinstall Scanner.



Board (PWB-C/C).

4011T528AA

8/10/2019 Di 1611-2011

201/213

3-52


4.4.11 Image Reading Section: Moire

Step Check Result Action1 Moire distortions recur even after the orientation of

original has been changed.NO Change the original

mode (select oneother than thatresulted in moire).

2 Moire distortions recur even after the original modehas been changed.

NO Change the originalimage mode.

3 Moire distortions recur even when the zoom ratio ischanged.

NO Change the zoomratio setting.

4 The problem has been eliminated through thechecks of step up 3.

NO Adjust CCD MainZoom and CCD SubZoom.

2-34

4011T040AA

8/10/2019 Di 1611-2011

202/213

3-53


4.4.12 Printer Section: Blank copy

Step Check Result Action1 Imaging Unit is installed correctly. NO Reinstall.2 Connector between the Imaging Unit and copier is

dirty.

YES Clean.

3 PH Shutter (located along the laser path betweenthe PH Unit and PC Drum) is not in correct positionor malfunctions.

YES Correct or reinstall.

4 Connectors PJ12A and PJ13A in PH unit come offor lift.

YES Reconnect.

5 Image Transfer Roller Assy is installed correctly. NO Reinstall.6 Image transfer current contact is dirty, broken, or

bent.YES Clean, correct, or

change.

7 Developing bias contact is dirty, broken, or bent. YES Clean, correct, orchange.8 High Voltage Unit (HV1) connectors is loose. YES Reconnect.9 The following voltage is supplied from the Master

Board (PWB-A).Check that there is 24 V developing across theMaster Board pin and GND when the Power Switchis turned ON (during a copy cycle or a standbystate).

YES Change IU. Change PH Unit. Change High Volt-

age Unit (HV1).NO Change Master

Board (PWB-A).

4011T035AA

8/10/2019 Di 1611-2011

203/213

3-54


4.4.13 Printer Section: Black copy

Step Check Result Action1 PC Drum Charge Corona grid mesh and Comb

Electrode are loose.YES Reinstall.

2 PC Drum Charge Corona contact is dirty, scratchy,folded, bent, or damaged. YES Correct or change.

3 Grid bias contact is dirty, folded, or bent. YES Clean, correct, orchange.

4 PC Drum ground contact is dirty, scratchy, bent, ordamaged.

YES Clean, correct, orchange.

5 High Voltage Unit (HV1) connectors is loose. YES Reconnect.6 The PH Unit cable is loose. YES Reconnect.7 The following voltage is supplied from the Master

Board (PWB-A).Check that there is 24 V developing across theMaster Board pin and GND when the Power Switchis turned ON (during a copy cycle or a standbystate).

YES Change IU.

Change PH Unit. Change High Volt-age Unit (HV1).

NO Change MasterBoard (copier: PWB-A).

4011T036AA

8/10/2019 Di 1611-2011

204/213

3-55


4.4.14 Printer Section: Low image density

Step Check Result Action1 The image changes when Toner Replenisher is

executed. Toner Replenisher of Utility

YES Replenish the sup-ply of toner usingToner Replenisher.

2 The image changes when ID Adjust and VGAdjust are executed.

YES Readjust. Fordetails, seeADJUSTING/SET-TING.

3 Image transfer current contact is dirty, folded, orbent.


4 Developing bias contact is dirty, folded, or bent. YES Clean, correct, orchange.

5 High Voltage Unit (HV1) connectors is loose. YES Reconnect.6 ATDC Sensor (UN1) is dirty with foreign matter

(such as paper dust) other than developer.YES Clean.

7 The following voltages develop from the ATDCSensor (UN1).Check voltage across a Master Board pin and GNDwhen the Power Switch is turned ON. DC5.39 V to 8.15 V across PJ10A-1 and GND DC1.41 V to 4.98 V across PJ10A-3 and GND

NO Change ATDC Sen-sor (UN1) and thenchange developer.

8 The following voltage is supplied from the MasterBoard (PWB-A). Check that there is 24 V developing across the

Master Board pin and GND when the PowerSwitch is turned ON (during a copy cycle or astandby state).

YES Change IU. Change High Volt-age Unit (HV1).

NO Change MasterBoard (copier: PWB-A).

4011T003AA

8/10/2019 Di 1611-2011

205/213

3-56


4.4.15 Printer Section: Foggy background or rough image

Step Check Result Action1 The image changes when ID Adjust and VG

Adjust are executed.YES Readjust. For details,

see ADJUSTING/ SETTING.

2 PC Drum surface and the areas in contact withDs Collars are dirty with foreign matter, ordeformed or worn.


3 Main Erase (LA1) is dirty. YES Clean.4 Grid bias contact is dirty, scratchy, deformed,

worn, or damaged.YES Clean, correct, or

change.5 ATDC Sensor (UN1) is dirty with foreign matter


6 The following voltages develop from the ATDCSensor (UN1).Check voltage across a Master Board pin andGND when the Power Switch is turned ON. DC5.39 V to 8.15 V across PJ10A-1 and GND DC1.41 V to 4.98 V across PJ10A-3 and GND

NO Change ATDC Sensor(UN1) and thenchange developer.

7 The following voltage is supplied from the MasterBoard (PWB-A).

Check that there is 24 V developing across theMaster Board pin and GND when the PowerSwitch is turned ON (during a copy cycle or astandby state).

YES Adjust Db. For details,see ADJUSTING/ SETTING.

Change Eraser Lamp(LA1).

Change PC Drum. Change Imaging Unit. Change High Voltage

Unit (HV1).NO Change Master Board

(copier: PWB-A).

4011T004AA

8/10/2019 Di 1611-2011

206/213

3-57


4.4.16 Printer Section: Black streaks or bands

Step Check Result Action1 PC Drum is dirty or scratchy. YES Clean or change.2 Foreign matter (such as paper dust) sticks to the

Cleaning Blade of IU or the blade curves upward.

YES Remove foreign

matter, correct, orchange.3 DB of IU is plugged with foreign matter (such as

paper dust).YES Remove foreign

matter.4 PC Drum Charge Corona grid mesh and Comb

Electrode are dirty, scratchy, deformed, damaged,or out of position.


5 Fusing Roller is dirty or scratchy. YES Clean or change.6 PH window of the PH Unit is dirty or scratchy. YES Clean or change.

NO Change IU.

4011T017AA 4011T023AA

8/10/2019 Di 1611-2011

207/213

3-58


4.4.17 Printer Section: Black spots

Step Check Result Action1 Toner is present along the paper path. YES Clean.2 PC Drum is dirty or scratchy. YES Clean or change.

3 Tip of the PC Drum Paper Separator Finger is dirty,scratchy, deformed, worn, or damaged.


4 Fusing Roller is dirty or scratchy. YES Clean or change.5 Tip of the Fusing Paper Separator Finger is dirty,

scratchy, deformed, worn, or damaged.YES Clean or change

Fusing Paper Sepa-rator Fingers andfinger springs.

6 The image changes when VG Adjust is executed. YES Readjust. Fordetails, seeADJUSTING/SET-TING.

4011T521AA

8/10/2019 Di 1611-2011

208/213

3-59


4.4.18 Printer Section: Blank streaks or bands

Step Check Result Action1 PC Drum ground terminal is dirty, scratchy,

deformed, or damaged.YES Clean, correct, or

change.

2 DB of IU is plugged with foreign matter (such aspaper dust). YES Remove foreignmatter.3 PC Drum Charge Corona grid mesh and Comb

Electrode are dirty, scratchy, deformed, or dam-aged.


4 Post-fusing guide plate is dirty, scratchy, deformed,worn, or damaged.


5 PH window of the PH Unit is dirty, scratchy, or dam-aged.

YES Clean or change.NO Change IU.

4011T015AA 4011T020AA

8/10/2019 Di 1611-2011

209/213

3-60


4.4.19 Printer Section: Void areas

Step Check Result Action1 Foreign matter is present along the paper path. YES Remove foreign

matter.

2 Paper dust plugs up the Paper Dust Remover. YES Clean or change.3 PC Drum Charge Corona, grid mesh, and Comb

Electrode are loose.YES Reinstall.

4 PC Drum Charge Corona contact is dirty, scratchy,deformed, worn, or damaged.


5 Developing Roller is dirty, scratchy, deformed,worn, or damaged.


6 Toner is even on Sleeve/Magnet Roller. NO Adjust Db. Fordetails, seeADJUSTING/SET-TING.

7 Developer is not even in the Developer MixingChamber of IU.

YES Even out developerin the DeveloperMixing Chamber.

8 DB of IU is plugged with foreign matter (such aspaper dust).

YES Remove foreignmatter.

9 Image Transfer Roller is dirty, scratchy, deformed,worn, or damaged.


10 Image Transfer Roller Assy is installed correctly. NO Reinstall.11 Charge Neutralizing Plate is dirty, scratchy, folded,

or bent.YES Clean, correct, or

change.12 Fusing Roller is dirty, scratchy, deformed, or worn. YES Clean or change.

NO Change IU.

4011T008AA

8/10/2019 Di 1611-2011

210/213

3-61


4.4.20 Printer Section: Smear on back

Step Check Result Action1 Toner is spilled over area inside copier. YES Clean interior.2 Toner is present along the paper path. YES Clean.

3 Fusing Pressure Roller is dirty, scratchy, or dam-aged.


4 Image Transfer Roller is dirty. YES Clean or change.5 Grid bias contact is dirty, scratchy, deformed, worn,

or damaged.YES Clean, correct, or

change.NO Change High Volt-

age Unit (HV1). Change Master

Board (PWB-A).

4011T009AA

8/10/2019 Di 1611-2011

211/213

3-62


4.4.21 Printer Section: Uneven image density

Step Check Result Action1 PC Drum ground plate is dirty, scratchy, deformed,

worn, or damaged.YES Clean, correct, or

change.

2 PC Drum Charge Corona grid mesh and CombElectrode are dirty, scratchy, deformed, worn, dam-aged, or loose.


3 Image Transfer Roller is dirty, scratchy, deformed,worn, or damaged.


4 Sleeve/Magnet Roller is dirty, scratchy, deformed,worn, or damaged.


5 Toner is even on Sleeve/Magnet Roller. NO Adjust Db. Fordetails, seeADJUSTING/SET-TING.

6 Developer is not even in the Developer MixingChamber of IU.

YES Even out developerin the DeveloperMixing Chamber.

NO Change IU. Change Master

Board (PWB-A).

4011T525AA

8/10/2019 Di 1611-2011

212/213

3-63


4.4.22 Printer Section: Gradation reproduction failure

Step Check Result Action1 PC Drum is dirty. YES Clean.2 Image Transfer Roller is dirty, scratchy, deformed,

worn, or damaged.


3 The PH Unit cable is loose. YES Reconnect.4 PH window of PH Unit is dirty. YES Clean.5 ATDC Sensor (UN1) is dirty with foreign matter


6 The following voltages develop from the ATDCSensor (UN1).Check voltage across a Master Board pin and GNDwhen the Power Switch is turned ON. DC5.39 V to 8.15 V across PJ10A-1 and GND DC1.41 V to 4.98 V across PJ10A-3 and GND

NO Change ATDC Sen-sor (UN1) anddeveloper.

YES Change Master

Board (copier: PWB-A).

4011T526AA

8/10/2019 Di 1611-2011

213/213


4.4.23 Printer Section: Periodically uneven image

Step Check Result Action1 IU is securely fastened using the dedicated fixing

screws.NO Secure in position.

4011T528AA

Documents

Di 1611-2011