Sanyo 17mb22 Training

SANYO LCD TVOVERVIEW & FAULT DIAGNOSIS 17MB22 Chassis

IDTV CE37LD81-B CE42LD81-B

SANYO LCD TV 2007-8Models: CE37LD81-B, CE42LD81-B PCB Spares Listing For the 2007-8 SANYO TV, ordering of spare parts needs reference taken not only of the TV model number i.e. CE37LD81-B but also of the actual production code of that particular model. On occasions the same model number could have a different particular pcb or a different manufacturer or revision of LCD panel fitted. The production code could be viewed similarly to previous models whereby production changes were notified by use of a different service code i.e. CE32LD6-B-01. The production code can be easily found on the rating plate on the TV back cabinet under the Model number and 2 bar codes as seen below.Identification of Production Code (26 Example)

TV RATING PLATE On back of set

Production Code

The correct production code must be used to locate the correct part numbers, otherwise incorrect parts may be supplied. If a particular production code is not listed, you must contact technical support for advice before ordering any parts.

Main Part Numbers for CE37LC81-B, CE42LD81-B

CE37LD81-BModel Power Board FAV Board LED Board Key Board R/C Right Speaker Left Speaker Panel Chasis LVDS Cable

Prod Code 10047951 20319694 20309015 20315065 20345995 20328881 20308713 20308712 30044228 20337555 30048584 17MB22 37781 SANYO SANYO CE37LD81-B MD.ASY.17PW20-37" TFT 170-270V MD.ASY.17FAV14-AV/HP/SV/LO/SPDIF(MB22) MD.ASY.17LD55-37-40781(MB15) MD.ASY.17TK83S-6SW 37-42750/51 (MB22) R/C 1050 SANYO (GRAY/S) SPK.ASY.42720TFT(MB11/15-L/MB22-R)JIEFU SPK.ASY.42720TFT(MB11/15-R/MB22-L)JIEFU TFT LCD 37''W LG LC370WX1-SL01SAFE RoHS CHS.ASSY.17MB22-21112222422531221147 CNAS 30P/230 LVDSW/FER UL20276 AWG30RoHS

CE42LD81-BModel Power Board FAV Board LED Board Key Board R/C Right Speaker Left Speaker Panel Chasis LVDS Cable

Prod Code 10049155 20301443 20309015 20315065 20345995 20328881 20308713 20308712 30052454 20347999 30058240 17MB22 42781 SANYO SANYO-CE42LD81-B MD.ASY.17PW16-2-42" TFT 170-270V(W/CABLE MD.ASY.17FAV14-AV/HP/SV/LO/SPDIF(MB22) MD.ASY.17LD55-37-40781(MB15) MD.ASY.17TK83S-6SW 37-42750/51 (MB22) R/C 1050 SANYO (GRAY/S) SPK.ASY.42720TFT(MB11/15-L/MB22-R)JIEFU SPK.ASY.42720TFT(MB11/15-R/MB22-L)JIEFU TFT LCD 42"W LG LC420WX5-SLA1 SAFE RoHS CHS.ASSY.17MB22-21112222422531221148 CNAS 30P/350 MB22LVDSUL20276 AWG30RoHS

Inverter and LCD Panel Control Pcbs are normally part of the complete LCD Panel SANYO will supply separately subject to availability.Model Inverter (LIPS) Pt. No. CE37LD81-B CE42LD81-B MASTER SLAVE MASTER SLAVE 30048243 30048244 30054783 30059001 Display Ctrl Pcb (Top rear of LCD panel) Pt. No. 30054730 30054729

Signal Pcb (Chassis) Identification (42 Example)Cabinet Back Rear Label

Production Code

Main (Chassis) Pcb

Part Number

LCD Panel Size

LCD Panel Manufacturer (LG in this example)

TV Model: CE37LD81-BMaster Inverter Power Supply Pcb Display Control Pcb Digital Freeview Pcb

Key Pcb

AV Pcb RCU & LED Pcb Signal Pcb (Audio/ Video / CPU & Scaler) Slave Inverter HDMI Pcb

LCD Display Panel Replaceable only with prior TECHNICAL AUTHORISATION. Inverter (Back Light) Pcb Display Control Pcb (fitted inside rear of LCD Panel) (Both supplied as part of LCD Panel but available as spare separately). Signal Pcb - spares name - Chassis RCU / LED Pcb - spares name - LED Board Digital Freeview Pcb - spares name - DTT Board Power Supply Pcb - spares name - Power Board HDMI Pcb - spares name - HDMI Input Board AV Pcb - spares name - FAV Board Key Pcb - spares name - Key Board

GENERIC USE ONLY - CONSULT PARTS LIST FOR APPROPRIATE MODEL

CE37LD81-B POWER SUPPLY PCB

PL809 AC IN

C902 TR805 + RUN SUPPLIES390V Run 340v Stby REF UNISOLATED GROUND

TR806 RESONANT CHOKE

F800 T2.5A

All other Voltages shown are with reference to the isolated metal chassis

37" POWER SUPPLY PCBPL801 +24V Run to Slave Inverter PL804 to Digital Pcb 32V Stby 34V Run +24V to PL001 Signal Pcb PL802 to Master Inverter 12V Run PL803 to Signal PL003 PL805 to PL002 Signal Pcb

TR803 STANDBY SUPPLIES

PL811 to Standby button

+24V

2v3 3v2 Run Supplies

3v2 2v5

2v5

Run Supplies

11v9 Run 1v7 Stby 0.6V Run

4v9 3v3 Run Supplies

3v3 5V Standby

7.8V (pulsing) Standby (front LED lit) 0V Side Standby Key button pressed in

Note :- This model has a low power mode, which switches off the CPU standby supplies and front LED, when the latching side standby key button is pressed. (The TV will appear completely 'Dead' and cannot not be operated by the RCU). In this mode 340VDC is still supplied by the bridge rectifier to the unisolated primary components, which are still Live..

CE37LD81-B SIGNAL PCBPL207

37" Signal Processing 17MB22Side Key Press Norm = 3v3 AV = 2V Menu = 0.56V CH+ = 1V CH - + 2v3 Vol + = 1v6 Vol - = 0.19V PL403 to Keypad PcbIC405 Sync Switch

FPC connector to Digital Pcb Audio, Video & Control Bus 12V LCD Panel Supplies PL4065V Stby

PL002 to PSU PL805

PL003 to PSU PL803

L/S3V2 Run

L/S

3V3 Stby

3V3 Run

4V9 Run

11V9 Run 32V Stby 34V Run

1V8 Stby

2V5 Run 1V7 Stby 0.6V Run

2v5 Run

LVDS Drives & Clocks measure 200mv on 100MHz Scope using x 10 probe. These may be very low or look non existent on a low bandwidth scope If all LVDS drives are present, the clock signals can be assumed to be OK. (See LVDS / Clock waveform pages)

IC 403 NVM (64K)

-+ -+ -+

IC001

CLK - + LVDS Drives to LCD Panel IC400

0.6V Stby3V3 Stby

IC601 Audio Output

PL302 Digital Pcb PL001 To PL801 PSU PL602 to LED / RCU Pcb

24V To Run

VCTPMain CPU, Video TXT, Audio, Scaler LED 4v3 Run 3v2 Stby 3v9 (Dips with RCU) Always +5V12V Run

IC 101 AGC

IF out to Digital Pcb

IC100 Analogue IF & CVBS out To PL204 FAV Pcb

IC902 Video Switch IC004 IC904 Audio Switch

2 x HDMI 1.1 Pcb

PL411

IC200 PC in

PL206 To PL104 FAV Pcb PC AUD IN

TU100Combined UHF / VHF / CATV Analogue & Digital Tuner

IC903 RGB

10V5 RunTo PL205 FAV Pcb IC905 Audio SW

9.1V Run

IC702 HDMI 1.1

Service Port To Digital Pcb (LD Only)

Pc Input

Component Video / Audio Inputs Y Pb PrL AUD R AUD

RGB, Composite Video in Composite Video Mon out SCART 1

RGB, Composite Video in SVHS IN SCART 2

Srv Port

TV Model: CE42LD81-BMaster Inverter Power Supply Pcb Display Control Pcb Digital Freeview Pcb

Key Pcb

AV Pcb RCU & LED Pcb Signal Pcb (Audio/ Video / CPU & Scaler) Slave Inverter HDMI Pcb

LCD Display Panel Replaceable only with prior TECHNICAL AUTHORISATION. Inverter (Back Light) Pcb Display Control Pcb (fitted inside rear of LCD Panel) (Both supplied as part of LCD Panel but available as spare separately). Signal Pcb - spares name - Chassis RCU / LED Pcb - spares name - LED Board Digital Freeview Pcb - spares name - DTT Board Power Supply Pcb - spares name - Power Board HDMI Pcb - spares name - HDMI Input Board AV Pcb - spares name - FAV Board Key Pcb - spares name - Key Board

GENERIC USE ONLY - CONSULT PARTS LIST FOR APPROPRIATE MODEL

CE42LD81-B POWER SUPPLY PCB

PL809 AC IN

C902 TR805 RUN SUPPLIES

TR806 RESONANT CHOKE

F800 T2.5A

+390V Run 340v Stby REF UNISOLATED GROUND All other Voltages shown are with reference to the isolated matal chassis

42" POWER SUPPLY PCBPL801 +24V Run to Inverter 2v7 3v2 PL807 to Digital Pcb 34V Run 32v Stby PL805 to PL002 Signal Pcb

TR803 STANDBY SUPPLIES

24V to PL001 Signal Pcb PL802 to Inverter Pcb

12V Run PL803 to Signal PL003

PL811 to Standby button

+24V Run Supplies

2v7

3v2

2v7

2v5

Run Supplies

11v9 Run 1.7V Stby 0.6V Run

4v9 3v3 Run Supplies

3v3 5V Standby

8V (pulsimg) Standby (front LED lit) 0V Side Standby Key button pressed in

Note :- This model has a low power mode, which switches off the CPU standby supplies and front LED, when the latching side standby key button is pressed. (The TV will appear completely 'Dead' and cannot not be operated by the RCU). In this mode 340VDC is still supplied by the bridge rectifier to the unisolated primary components, which are still Live.

CE42LD81-B SIGNAL PCBPL207

42" Signal Processing 17MB22Side Key Press Norm = 3v3 AV = 2V Menu = 0.56V CH+ = 1V CH - + 2v3 Vol + = 1v6 Vol - = 0.19V PL403 to Keypad PcbIC405 Sync Switch

FPC connector to Digital Pcb Audio, Video & Control Bus 12V LCD Panel Supplies PL4065V Stby

PL002 to PSU PL805

PL003 to PSU PL803

L/S3V2 Run

L/S

3V3 Stby

3V3 Run

4V9 Run

11V9 Run 32V Stby 34V Run

1V8 Stby

2V5 Run 1.7V Stby 0.6V Run

2v7 Run

LVDS Drives & Clocks measure 200mv on 100MHz Scope using x 10 probe. These may be very low or look non existent on a low bandwidth scope If all LVDS drives are present, the clock signals can be assumed to be OK. (See LVDS / Clock waveform pages)

IC 403 NVM (64K)

-+ -+ -+

IC001

CLK - + LVDS Drives to LCD Panel IC400

0.6V Stby3V3 Stby

IC601 Audio Output

PL302 Digital Pcb PL001 To PL801 PSU PL602 to LED / RCU Pcb

24V To Run

VCTPMain CPU, Video TXT, Audio, Scaler PL400IC902 Video Switch To PL204 FAV Pcb Ground to PL802 PSU IC004 IC904 Audio Switch

IC 101 AGC

IF out to Digital Pcb

IC10