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Sanyo CE42LM4WPTC Service Manual

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LCD Monitor
Service Manual
Model CE42LM4WPTC
Service Ref. No. CE42LM4WPTC-00
113003920
PRODUCT CODE:
ORIGINAL VERSION:
Please use Schematic Diagram 1KA6P2P0052--
inserted with this Service Manual.
Give complete "SERVICE REF. NO." for parts
order or servicing, it is shown on the rating sheet
on the cabinet back of the TV set.
Note
This TV receiver will not work properly in foreign
countries where the television transmission
system and power source differ from the design
specifications. Refer to the specifications for the
design specifications
Contents
Safety precautions/Specifications ..................................................................................................................2
Service Mode/Service Data ........................................................................................................................3~7
HDMI / PC / Component Signal Support Timing List......................................................................................8
Mechanical Disassembly ..........................................................................................................................9~11
Block Diagram ..............................................................................................................................................12
Power Diagram ............................................................................................................................................13
Power and Control Diagram ........................................................................................................................14
Troubleshooting ............................................................................................................................................17
IC Descriptions........................................................................................................................................18~19
IC Block Diagrams........................................................................................................................................................................20~26
Cabinet Parts List ........................................................................................................................................27
Pin description of semiconductors ................................................................................................................28
Electric Parts List ..........................................................................................................................................29
Part No. 1KA6P2P0051--
UK4-B
Chassis No.
N4JKT
SEPTEMBER 2007
FILE NO.
CE42LM4WPTC
Reference No.
SM5111116-00

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Summary of Contents for Sanyo CE42LM4WPTC

  • Page 1: Table Of Contents

    FILE NO. LCD Monitor CE42LM4WPTC Service Manual Model CE42LM4WPTC Service Ref. No. CE42LM4WPTC-00 113003920 PRODUCT CODE: UK4-B ORIGINAL VERSION: Chassis No. Please use Schematic Diagram 1KA6P2P0052-- inserted with this Service Manual. Give complete "SERVICE REF. NO." for parts order or servicing, it is shown on the rating sheet on the cabinet back of the TV set.
  • Page 2: Safety Precautions/Specifications

    40 Kg Important recycling information. RoHS Your SANYO product is designed and .This product does not contain any hazardous substances prohibited by the RoHS Directive. manufactured with high quality materials (Y ou will find “R” or “Z” at the last digit of the serial number or an “RSF” label near the rating plate on the RoHS compliant product.)
  • Page 3: Service Mode/Service Data

    HOTEL MODE To enter Hotel Mode press and hold the green button on the remote control for 3 seconds. Hotel Mode allows the user to set up the function of the set SERVICE MODE To enter Service Mode press and hold the green button on the remote control whilst pressing the 6 button on the tv cabinet at the same time, alternatively:- From Hotel Mode press and hold the green button on the remote control for 3 seconds To select the service item and change data value...
  • Page 4 SERVICE DATA N4JKT...
  • Page 5 SERVICE DATA (contd.1) N4JKT...
  • Page 6 SERVICE DATA (contd.2) N4JKT...
  • Page 7 SERVICE DATA (contd.3) N4JKT...
  • Page 8: Hdmi / Pc / Component Signal Support Timing List

    HDMI / PC / COMPONENT SIGNAL SUPPORT TIMING LIST Horizontal Vertical Resolution Frequency Frequency Remark (Hz) (kHz) 720_400 31.47 70.09 DOS(VGA) 640_480 31.50 60.00 DOS(VGA VESA 60Hz) 640_480 75.00 37.50 VGA VESA 75Hz 640_480 VGA VESA 70Hz 37.86 72.81 640_480 37.86 74.38 640_480...
  • Page 9 Mechanical Disassemblies (CE42LM4WPR-E) 1. Check points before disassembly Check the location of tamper proof marking (Fig-1) If the marks are removed or touched, somebody may have already disassembled the set. This makes the warranty regarding this IP model invalid. After finishing the service, make the set tamper proof again with silver paint. 2.
  • Page 10: Mechanical Disassembly

    Mechanical Disassembly contd. -10- N4JKT...
  • Page 11 Mechanical Disassembly contd. Location if Circuit Board and Electric Parts Note: Control Board is fixed on Cabinet Front. 3. Chassis and Fan Removal Screw A : M3 x 6 -11- N4JKT...
  • Page 12: Block Diagram

    BLOCK DIAGRAM This is a diagram for all models and therefore differs slightly from the actual block diagram. Outline LCD PANEL PANEL TUNER LVDS LOC2 VIFIN1 CVBS1 TV OUT (CVBS) DVBO_IFVO_FMRO SCART1 RGB1 CVBS30_Y30 SWO1_CVBS20_Y20 VIDEO SWITCH CVBS_Y5 CVBS_Y4 CVBS VIDEO SVO6/CVBS6 SWITCH...
  • Page 13: Power Diagram

    -13- N4JKT...
  • Page 14: Power And Control Diagram

    Power and Control Diagram CONNECTOR K3001 MAIN SUB-AV SOCKET 1AA0B10H087D0 POWER 1AA0B10H086G0 1AA0B10H086JB POWER_3 5V S/By BL_ON BL_ADJ 3.3V S/B K605-02 R1601 R1600 Power on 5V S/B ON/OFF K605 K3002 16V Main Supply IC1551 P_FAIL K303-03 5V1A 1AA93ABAF300X KCPA K3003 K603 3.3V K2013...
  • Page 15: Rs232C Settings

    RS232C SETTINGS The TV control commands are used to control a TV through RS232C from a computer. Serial Interface Specification Transfer Specification 1. Transmission Speed : initial setting value is 19200 2. Transmission speed can be changed by hotel mode ITEM SPECIFICATION Synchronous system...
  • Page 16: Rs232C Command Tables

    RS232C Command Tables Functional Execution Command Table Item Command POWER ON POWER OFF Wide “Auto” direct Wide “Natural” direct Wide “Zoom 16:9” direct Wide “Title in 16:9” direct Wide “Zoom 14:9” direct Wide “Title in 14:9” direct Wide “Full” direct Wide “Normal”...
  • Page 17: Troubleshooting

    TROUBLE SHOOTING Item Condition Check point Check to voltage of KR-3 --- 5V No power NO LED >>Change the power board Check the fuse on the FILTER board Check the connection of the AC cord. No power NO LED (AC plug and junction part) Check the voltage of LED brighter No power...
  • Page 18: Ic Descriptions

    IC Descriptions for UK4B IC1110 This is a switching IC, NJM2233BM, which allows the sync signal input on monitor sets to be switched between pin 20 of SCART 1 (conventional) and pin 14 of SCART 1 (SIS signal). The IC takes a 5V supply and is switched by the control line SIS.
  • Page 19 IC Descriptions for UK4B (continued) IC6600 This is an LA5754 voltage regulator. It provides the 12v supply for the LCD panel. IC6601 This is a BA33BC0FP voltage regulator. It converts the 5v standby supply to 3.3v. IC6602 This is a BA09FP-E2 voltage regulator. It converts 13v to 9v. IC6603 This is a BA12FP-E2 12v voltage regulator.
  • Page 20: Ic Block Diagrams

    IC BLOCK DIAGRAMS IC801 xxx xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxxxxxx xxxxxxxxxxxxxxxxxx -20- N4JKT...
  • Page 21 IC BLOCK DIAGRAMS IC1205 BA7603F IN2a IN1a CTLa OUTa IN2b OUTb CTLb OUTc IN1b CTLc IN2c IN1c IC151 BA2904 OUT2 -IN2 +IN2 +IN1 OUT1 -IN1 -21- N4JKT...
  • Page 22 IC BLOCK DIAGRAMS IC1271 (MM1631) Lout1 Rout1 Lout2 Rout2 Lout3 Rout3 BIAS BIAS Logic 31 32 IC2002 (TSH3441) Pin1 identification Top View OUT1 OUT2 OUT3 +Vcc -22- N4JKT...
  • Page 23 IC BLOCK DIAGRAMS IC2003 (TC7WH125) IC2006 (SP3232) T1OUT SP3232E R1IN R1OUT T1IN T2OUT T2IN R2IN R2OUT IC2007 / IC2008 / IC2011 (TC7SET08) -23- N4JKT...
  • Page 24 IC BLOCK DIAGRAMS IC2009 (BD4828) Vref IC2010 (R5F21162) 24 23 22 21 20 19 18 17 /INT /CMP0 /CMP0 MODE /CMP0 R8C/11 Group /TxD /RxD /TxD /CLK 1 2 3 4 5 6 7 8 IC2012 (BA50BC0FP) GND (FIN) Vref Driver Vcc (1 PIN) OUT (3 PIN)
  • Page 25: Functional Block Diagram

    IC BLOCK DIAGRAMS IC4001 (ST39VF0200) Functional Block Diagram SuperFlash X-Decoder Memory Memory Address Address Buffers & Latches Y-Decoder I/O Buffers and Data Latches Control Logic DQ7-DQ0 IC6600 / IC6604 (LA5754MP-DL-E) Voltage regulator ON/OFF circuit soft PWM COMP. Soft start circuit ERROR AMP.
  • Page 26 IC BLOCK DIAGRAMS IC601 L6562D COMP MULT MULTIPLIER AND THD OPTIMIZER 2.5V VOLTAGE OVERVOLTAGE DETECTION REGULATOR INTERNAL 15 V SUPPLY 7V 25 V DRIVER UVLO Starter REF2 stop ZERO CURRENT DETECTOR 2.1 V STARTER 1.6 V DISABLE IC1801 / IC1802 PCA9534PW PCA9534 I/O0 I/O1...
  • Page 27: Cabinet Parts List

    CABINET PARTS LIST FOR MODEL CE42LM4WPTC-00 Note: Parts order must contain Service Ref. No., Part No., and descriptions. 4 + 5 Security fixing point Cable entry JXPLA Item Part No. Description Item Part No. Description CE42LM4WPTC-00 CABINET PARTS 665 000 8618...
  • Page 28: Pin Description Of Semiconductors

    PIN DESCRIPTION OF SEMICONDUCTORS G Diode ● Diode K: Cathode A: Anode G Transistor/FET ● Transistor/FET C: Collector D: Drain B: Base G: Gate Index E: Emitter S: Source C1 C2 C1 C2 G IC ● IC (GND) RESET (IN) (OUT) Index Index...
  • Page 29: Electric Parts List

    It is particularly recommended that only parts specified on the following parts list be used for components replacement pointed out by the mark Note: Parts order must contain Service Ref. No., Part No., and descriptions. CE42LM4WPTC CHASSIS PARTS 665 000 8694...
  • Page 30 -30- N4JK...
  • Page 31 -31- N4JKT...
  • Page 32 Sanyo Industries (UK) Ltd Printed in UK -32- N4JK...

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