FILE NO.
SERVICE MANUAL Colour Television
Model No. CE14SP4R(Russia)
Service Ref. No. CE14SP4R-50
TIMER
TV/AV
1 5 9BASSTV/AV MENUCH
2 6 0
3 7 -/--
4 8
A B SURROUND
P
P
P
V ID EO
AUDIO
CH SCAN
PMENU
SWAP PIC MODE
JXMYA
SpecificationsPower Source . . . . . . . . . . Colour System . . . . . . . . . Television System . . . . . . Channel Coverage . . . . . AC110-240V, 50Hz/60Hz. PAL/SECAM/NTSC4.43/NTSC/PAL-60Hz B/G, D/KK, I, M/M VHF: E2-E12, A2-A13, R1-R12, J1-J12, K1-K9 UHF: 21-69, A14-A69, J13-J62 CATV: S1-S41, X, Y, Z, Z+1, Z+2
Product Code: 111356544 Original Version Chassis Series: AC5-CG
Video IF . . . . . . . . . . . . . . 38.0MHz Aerial Input Impedance . . 75 Ext. Terminals Video inputs: Phone jack 2 (1Vp - p, 75) Audio inputs: Phone jack 2 (436mVrms, more than 40K) Video monitor outputs: Phone jack 1(1Vp - p, 75) Audio monitor outputs: Phone jack 1(436mVrms, less than 600) Sound Output (RMS) . . . . 5 W Speaker . . . . . . . . . . . . . . 6 cm 12 cm 2 pcs. Dimensions . . . . . . . . . . . . 364.5 (W) 361.7 (H) 383.3 (D)mm Weight . . . . . . . . . . . . . . . approx. 8.6 Kg Specifications subject to change without notice.
Give complete SERVICE REF. NO. for parts order or servicing. It is shown on the rating plate at the cabinet back of the unit.
This T.V. receiver will not work properly in foreign countries where the television transmission system and power source differ from the design specifications. Refer to the specification table. REFERENCE NO.
C4FVH
SM5110650
X161 SAW FILTER9V 180V R G
A101 TUNER CRT UNITKEY-IN RC-IN ON-TIMER
FRONT CONTROL KEYS SW1901 - SW1906 A1901A RC RECEIVER
D1910 LED
Q901 CRT
12
28 32B
REAR AV TERMINAL
IC801 CPU19 20 21 3 SDA SCL 4HEATER
HV L902 DY
VIDEO IN
Chassis Block Diagrams
AUDIO IN
OSD R-OUT
OSD G-OUT
OSD B-OUT
MAIN SIGNAL PROCESSING CIRCUIT
FRONT AV TERMINAL
5 6 IC802 EEPROM T431 H-DRIVE TRANS. Q431 H-DRIVE
1
IC501 VERT. /DEF. 5Q432 H-OUT
VIDEO IN
IC201 IF/VIDEO/CHROMAIF IN EXT. VIDEO IN 19 20 R-OUT G-OUT B-OUT 21 42 5/6 14 15 16OSD R-IN OSD G-IN OSD B-IN
FOCUS SCREEN
AUDIO IN
INT. VIDEO IN 44 SIF OUT SIF IN AUDIO OUT
52 54 1 23 VERT. OUT
RGB MATRIX
-3VIDEO OUT 46
HV
T471 FBTPOWER SUPPLY CIRCUIT
IC001 AUDIO AMP. 6AUDIO MONITOR OUT
SP901
AUDIO OUT
2 8SELECTED VIDEO OUT
27 HORIZ. OUTT611 CONVERTER TRANS. Reg.5VRC
SP902
AUDIO OUT
12
2
1H DL 40 35 R-Y OUT 34 B-Y OUT
IC281 SECAM7 9 17
9V 11V 24V
VIDEO MONITOR OUT EXT. AUDIO IN
REAR AV TERMINAL
AUDIO MONITOR OUT
51 VIDEO IN
SWITCH
VR631
130V
SOUND MUTE (MUTE=H)
IC001 AUDIO AMP. 29 11 13 12 KEY SWITCH IN KEY SWITCH IC801 CPU QXXAVC305P COLOUR SYSTEM OPTION INPUT 34 BASS EXPANDER CIRCUIT
SYSTEM CONTROL
BASS EXPANDER ON/OFF (ON=HIGH)
Chassis Block Diagrams
RESET INPUT (RESET=LOW)
SECAM KILLER INPUT (HIGH=SECAM)
SCL 2 9 1 POWER ON/OFF (ON=HIGH, OFF=LOW) SDA SDA 31 33 11 12AFT SIGNAL INPUT
4 5
A101 F/S TUNER
VIF-M OUTPUT (HIGH=NTSC, LOW=OTHER) RC SIGNAL IN (ACTIVE=HIGH)
PHOTO COUPLE
SCL
-428 10OSD BLK OUT(Active=High) 22 OSD RED OUT(Active=High)
RC PRE-AMP. 32 6 7 4 SCL SDA 3 17 27
IC201 IF/VIDEO / CHROMA/DEF.
ON-TIMER LED OUT (ON TIMER ON=Low)
LED CPU OSC IN CPU OSC OUT
OSC X801
19 OSD GREEN OUT(Active=High) 20 OSD BLUE OUT(Active=High) 21 18HORIZ. SYNC IN (ACTIVE=LOW) VERT. SYNC IN (ACTIVE=LOW)
32.768KHz
DEFLECTION CIRCUIT
6
5POWER PROTECT IN (POWER ERROR=LOW)
IC802 MEMORY
POWER CIRCUIT etc.
IC Block DiagramsIC201 < IF/Video/Chroma/Def. > LA76818
DC VOL
BPF
SW
54
Audio Output FM Output/Selected Audio Output PIF AGC RF AGC Output PIF Input1 PIF Input 2 IF Ground IF Vcc FM Filter AFT Output Bus Data Bus Clock ABL Red Input Green Input Blue Input Fast Blanking Input RGB Vcc Red Output Green Output Blue Output fsc output or C Sync output Vertical Output Ramp ALC Filter Horizontal/BUS Vcc Horizontal AFC Filter Horizontal Output
SIF Input SIF APC Filter SIF Output Ext. Audio Input APC Filter VCO Coil 1 VCO Coil 2 VCO Filter Video Output Black Level Detector Internal Video Input (S-C IN) Video/Vertical Vcc External Video Input(Y-IN) Video/Vertical/BUS Ground Selected Video Output Chroma APC1 Filter 4.43 MHz Crystal Clamp Filter Chroma APC2 Filter SECAM R-Y Input (Cr Input) SECAM B-Y Input (Cb Input) CCD/Horizontal Ground CCD Filter CCD Vcc Clock (4MHz) Outupt VCO IREF Flyback Pulse Input
FM DET
LIM AMP
BPF
1 2 3 4 5 6
SPLL
53 52
IF AGC
RF AGC VIDEO DET VIDEO AMP TRAP VIF A2C PLL IF VCC 5V AFTPEAKING CORING
51 50 49 48
78 9 10 11 12 13 14 15 16 17 VCC 19 18 20 21 22 23 24 25 26PHASE SHIFTER DRIVE/OUT-OFF FSC/ SYNC SW
47
IF IDENT
46 45
DELAY LINE
VIDEO SW
TRAP
CLMP
44
BUS ABLOSD CONTRAST BRIGHT
42 43 V/C VCC 5V
BLACK STRETCH
SYNC SEP ACC
SWBPF ON/OFF
CLMP
DC REST
41
APC1
CLAMP VER RAMP HOR VCC H VCC HOR OUT
40
VXO
DEMO
39
TINT
PAL SW
DDS
38
CONTRAST BRIGHT
CLAMP
APC2
VCO
37 36
RGB MATRIX COLOR CLAMP
OSD SW VER C/D
35
CLAMP
DC ADS.
SW +
34 33
1H DELAY
32
VER SEP AFC1 AFC2
30 31 1H VCC
LPF ALC 1/256 HOR C/D HOR VCO
29
FBP
28
27
-5-
1K 10p 0.01u SIF.Out 52 53 500K Det FM Gain 1bit + FM.Level 5bit + 2.5V Chroma C/D Amp Amp SIF VCO SIF. Sys 2bit APC DetVIF 3
Data Clock SIF.In 54 LIM AMP 500K BPF FM Det Sound BPF Amp prescaller OSC C/D Sound Trap Amp B/N INV IF Ident To BUS Input Select A.SW 1bit A.MUTE 1bit Lock Det VIF Counter To BUS VIF VCO PLL Pull-in SW 50 PIF AGC APC Filter+
SIF APC Filter 1000p
11 Snd Det Deem-TC 1bit
12
BUS Interface
to BUS Line
IC Block Diagrams
VIF AMP
9+
PIF In1
1u 46 Video Out+
IF In Video Det
5
0.01u
Deemph
2
FM Out
SAW
VIF 1
VIF 2
FM Mute 1 bit
FM Filter
PIF In2
6
IC201 LA76818Audio in 51 VOLUME (ATT) VOLUME Filter VOLUME D/A A.Fil.Def 1bit VOLUME 7bit 10u 1 Audio.out
9V Video.Level 3bit 2ndIF AGC Chroma VCO Buzz Canceller IF AGC
120K
+/4
VCO AlignmentReset Pulse
+ To BUS
100K Chroma Counter AFT 49 10 48 VCO COIL1 VCO COIL2 VCO.Coil
IF GND APC Det 3 0.022u 330 0.47u
(6 Vcc)/7
VIF.Sys 2bit
Phase Detector Vcc AFT 100K 0.1u
7
0.47u VCO Ident
-6-/4
RF AGC Out
+
30K
IF AGC Drive
4
RF AGC
RF AGC Delay 6bit
IF VCC
IF AGC Def 1bit
47+
+
8
VCO Filter
IC Block DiagramsIC501 < Vertical Output > LA78040/LA78040NThermal Protection AMP +Bell/EQU Adj
IC281 LA7642NM-E-PEQU-Adj 20 Vcc 19 N.C. 18 Video In 17 Kil-Out 16 AV/SECAM 4.43MHz In 15 14 N.C. 13 SC-In 12 4MHz In 11
ACC
SW3
System
SW2 VCO
Pulse DET
Bell/EQU Filter KILLER
SW1
PLL DET Filter Clamp
Pulse I/F
LIM F0 Adj
Pump Up1 F0-Fil 2 Kil-Fil 3 N.C.
ID-KIL
ID
SW/ALC
4 4.43DC
5 ID-Fil
6 4M-DC
7 R-Y Out
8 N.C.
9 B-Y Out
10 GND
1 INVERTING INPUT Vcc
2
3 PUMP UP OUT GND
4
5 Ver. OUTPUT
6 OUTPUT STAGE Vcc
7 NON INV. INPUT
IC001 < Audio AMP.> AN7522N
+
-
+
-
-
+
-
+
1Vcc
2Ch.1 Input (+)
3GND (Ch. 1 Output)
4Ch.1 Output (-)
5Standby
6Ch.1 Input
7GND (Input)
8Ch.2 Input
9Volume
10Ch.2 Output (-)
11GND (Ch. 2 Output)
12Ch.2 Output (+)
Service InformationI Protection CircuitThis TV set has a built-in power supply protection circuit. It is provided to protect the TV set in case of a power supply circuit malfunctions. When something abnormality occurs during TV reception, the TV set goes to the stand-by mode. When an abnormality occurs during TV reception, it causes pin 27 of the CPU to go continually Low for about one second. The CPU detects that this has occurred and outputs the signal from pin 31 to switch off the power supply lines.
Releasing the protective circuit and restoring power supplyTo release the protective circuit and restore power supply, turn the power to the TV set OFF and then ON again via either the main power switch or the ON-OFF button on the remote control. This will work only if the power supply trouble was temporary. If there is permanent trouble such as a damaged circuit, power cannot be restored and the circuit will have to be repaired. -7-
Service Adjustments with Replacing Memory IC(IC802)Note: The CPU (IC801) and memory IC (IC802) store the service adjustments data and controls data for e
