Sanyo LCE-32R77 Service Manual
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Sanyo LCE-32R77 Service Manual

Led-lcd tv
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SERVICE MANUAL
LED-LCD TV
FILE NO.
LCE-32R77
PRODUCT CODE No.
PRODUCT CODE No.
1 682 351 96: PAL/SECAM
INPUT
1
2
3
4
5
6
7
8
9
FREEZE
0
SLEEP
DISPLAY
ENTER
MENU
EXIT
MUTE
VOL
CH
FAVORITE
FUNCTION
TTX
ZOO M
MIX
AUTO/STEREO
INDEX
PICTURE
SU BT ITLE
SOUND
TEX T/US B
RC-1310-0A
REFERENCE No.:SM0915230
-B/G, D/K, I
NTSC(AV)

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  • Page 1 FILE NO. LCE-32R77 SERVICE MANUAL PRODUCT CODE No. PRODUCT CODE No. 1 682 351 96: PAL/SECAM -B/G, D/K, I NTSC(AV) LED-LCD TV INPUT FREEZE SLEEP DISPLAY ENTER MENU EXIT MUTE FAVORITE FUNCTION ZOO M AUTO/STEREO INDEX PICTURE SU BT ITLE...

  • Page 2: Table Of Contents

    CONTENTS Safety precautions………………………………………………………………………..… Alignment instructions …………………………….…….………………………………… Software upgrade instructions .................. Working principle analysis……………………………….………….…………....Block diagram…………………………………..………………………………….………… IC block diagram………………………………………………………………………..…… Wiring diagram ……………………………………………………………………………. Troubleshooting flow chart ………………………………………………………………..…… Schematic diagram………………………………………………………………………… APPENDIX-A: Assembly list APPENDIX-B: Exploded View Assembling the Stand WALL MOUNTING INSTRUCTIONS...

  • Page 3: Safety Precautions

    Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety precautions 1. Instructions Be sure to switch off the power supply before replacing or welding any components or inserting/plugging in connection wire.
  • Page 4 would be unable to work and no way to get it repaired. If the connection wires, connections or components fixed by the thermotropic glue need to disengage when service, please soak the thermotropic glue into the alcohol and then pull them out in case of dagmage.

  • Page 5: Alignment Instructions

    Adjustment Instructions Safety Instructions 1.1 Power supply must be cut off when replacing or welding any component or inserting / pulling out connective lines; 1.2 Anti-electrostatic measures must be carried out during the whole producing processes! Do not touch IC by hands at will; Use anti-electrostatic iron;...
  • Page 6 Table 3 Voltage of X301 each pin X301 Pin 1、2 3、4 5、6 7、8 24.3 11.3 4.85 4.85 4.85 3.25 4.85 最小(V) 24.0 12.0 5.00 5.00 5.00 3.30 5.00 典型(V) 23.6 12.6 5.35 5.35 5.35 3.35 5.07 最大(V) 3.2 Adjustment flow as Fig. 1: Check if DDC、FLASH has been written? Produce data processing board on line.
  • Page 7 4 Adjustment Instructions 4.1 The unit adjustments 4.1.1 According to the wiring diagram “9232ME7001JL”, connect power/backlight board assembly, data processing assembly, IR/Key board assembly correctly, supply with power, turn on the TV set. Check display. 4.1.2 Factory menu instruction a) Press key “INPUT”, press digital keys “2、5、8、0” in turn to enter into primary factory menu; b) Press keys “...
  • Page 8 d）BBY：Insignia-Dynex TV Spec Part of chromatic coordinates are listed as Fig. 2: Fig.2 Chromatic coordinates of white balance 4.2.2 Four groups of white balance adjustments 4.2.2.1 DVI channel adjustment (HDMI,USB channel with the same adjustment method of this one) Input signal (VG848 Timing: 854，PAT: 921 (16-gray-step)), enter into factory menu page Color Temp, fix item G-GAIN, adjust items R-GAIN、B-GAIN to set chromatic coordinates of the reversed scale as the date of NORMAL;...
  • Page 9 4.2.2.4 AV channel adjustment（TV channel with the same adjustment method of this one） Input signal (VG848 Timing: 969，PAT: 921 (16-gray-step)), enter into factory menu page Color Temp, fix item G-GAIN, adjust items R-GAIN、B-GAIN to set chromatic coordinates of the reversed scale as the date of NORMAL;...
  • Page 10 Table 6 VGA received signal formats H.- Freq. V.- Freq. Dot pulse Freq. Definition Note (kHz) (Hz) (MHz) 720×400@70 Hz 31.47 70.08 28.32 VGA-T 640×480@60 Hz 31.50 60.00 25.18 640×480@72 Hz 37.90 72.00 31.50 VESA 640×480@75 Hz 37.50 75.00 31.50 VESA 800×600@56 Hz 35.16...

  • Page 11: Software Upgrade Instructions

    Software Upgrading Instruction Software Upgrading Instructions as Table 7 Table 7 Software Upgrading Instruction Upgrading Location Part No. Part model Software functions Upgrading method before SMT N102 5272532007 EN25Q32B-104HIP Main Software Upgrade with ALL100, etc. N102 5272532007 EN25Q32B-104HIP HDCP KEY Upgrade with ALL100, etc.
  • Page 12 8.4 Click option Config Setting in AUTO interface, set option Protect as All Protect, and set option SRWD as Enable, then click ‘OK’ to complete write-protect setup. Make sure the above both options are reset when executing ALL-100 upgrading software again after exiting it. If there is no option SRWD, please upgrade ALL-100 upgrading software.
  • Page 13 10 Software upgrading methods 10.1 Software upgrading methods from USB port (it is advise to use the method preferentially) a) Copy file offered by RD department to the root directory of U disk. Note that the file name must be MERGE.bin and be kept in the root directory of U disk. b) Insert U disk to USB port, switch to non-USB channel (such as TV, AV channel, etc.), enter into factory menu, choose “software upgrading USB”, then click “OK”...
  • Page 14 Note: I2C speed is set as about 60% commonly and should not be set too fast. If it is not easy to connect successfully, please set I2C speed slower. d) Select label Read, open bin file whose file path can display completely in the label Auto, e) Select label Auto, select items Read File, Erase Device (sub-item File Area of Erase Device had better be selected), Program and Exit ISP, then click button “Connect”, a dialog shown as Fig.
  • Page 15 g) Successful software upgrading interface is shown as Fig. 11; Fig. 11 Successful software upgrading interface 10.3 Software upgrading method from USB port (it is advised to use the method if the picture could not display because of wrong panel parameters) a) Copy file offered by RD department to the root directory of U disk.

  • Page 16: Working Principle Analysis

    Working principle analysis of the unit RF signal from antenna is sent into Tuner chip N401 to be processed by HF-amplifier and mixer to get digital IF signal DIF, then DIF signal is sent to main chip N101（MST6E182VGC）. HDMI signal is sent to HDMI switch chip N201 to be switched by three-way-signal-selection switch and then sent to main chip N101 （MST6E182VGC）.

  • Page 17: Block Diagram

    Block Diagram SPI FLASH Panel LVDS TUNER SPEAKER YPbPr MST6E182VG HDMI 1 HDMI 2...

  • Page 18: Ic Block Diagram

    IC Block Diagram 1、 MST6M181VG/MST6M182VG...
  • Page 25 2、 IT6633 Pin Diagram TXPWR5V CHPD REXT CSDA ARX2P CSCL ARX2M CRXCM CRXCP ARX1P CPWR5V ARX1M CRX0M CRX0P ARX0P ARX0M CRX1M CRX1P ARXCP ARXCM CRX2M ASCL CRX2P ASDA RESET Figure 1. IT6633 pin diagram...
  • Page 26 IT6633 Pin Description (All these pins provide ±8kV HBM ESD Protection) TMDS High Speed Differential Input Pins Pin Name Direction Description Type Pin No. ARX2P Input Channel 2 positive input of Port A TMDS ARX2M Input Channel 2 negative input of Port A TMDS ARX1P Input...
  • Page 27 IT6633 TXCP Output Clock channel positive output of output port TMDS TXCM Output Clock channel negative output of output port TMDS DDC, HPD and PWR5V Control Pins Pin Name Direction Description Type Pin No. ASCL Port A DDC bus clock line 5V-Tol.
  • Page 28 IT6633 Power and Ground Pins Pin Name Description Type Pin No. Chip power supply (3.3V) Power 12, 22, 38, 61 Chip ground Ground 9, 25, 41, 58 Functional Description Auto- calibration ARX[2,1,0,C]P ARX[2,1,0,C]M TX[2,1,0,C]P BRX[2,1,0,C]P BRX[2,1,0,C]M TX[2,1,0,C]M CRX[2,1,0,C]P CRX[2,1,0,C]M Detect APWR5V Active port TXPWR5V...
  • Page 29 3、 TAS5707, TAS5707A 48-TERMINAL, HTQFP PACKAGE (TOP VIEW) PHP Package (Top View) 48 47 46 45 44 43 42 41 40 39 38 37 OUT_A OUT_D PVDD_A PVDD_D PVDD_A PVDD_D BST_A BST_D GVDD_OUT GVDD_OUT VREG SSTIMER TAS5707 OC_ADJ AGND AVSS DVSS PLL_FLTM DVDD...
  • Page 30 TAS5707, TAS5707A PIN FUNCTIONS TYPE TERMINATION DESCRIPTION TOLERANT NAME AGND Analog ground for power stage AVDD 3.3-V analog power supply AVSS Analog 3.3-V supply ground BST_A High-side bootstrap supply for half-bridge A BST_B High-side bootstrap supply for half-bridge B BST_C High-side bootstrap supply for half-bridge C BST_D High-side bootstrap supply for half-bridge D...
  • Page 31 TAS5707, TAS5707A PIN FUNCTIONS (continued) TYPE TERMINATION DESCRIPTION TOLERANT NAME SSTIMER Controls ramp time of OUT_X to minimize pop. Leave this pin floating for BD mode. Requires capacitor of 2.2 nF to GND in AD mode. The capacitor determines the ramp time. STEST Factory test pin.

  • Page 32: Wiring Diagram

    Wiring Diagram Panel Ｍａｉｎ　ｂｏａｒｄ　ａｓｓｅｍｂｌｙ Pｏｗｅｒ　ｂｏａｒｄ　ａｓｓｅｍｂｌｙ Ｋｅｙ　ｂｏａｒｄ　ａｓｓｅｍｂｌｙ ＩＲ　ｂｏａｒｄ　ａｓｓｅｍｂｌｙ...

  • Page 33: Troubleshooting Flow Chart

    Troubleshooting flow chart 1. No raster, no picture, no sound. No raster, no picture, no sound Does power indicator light up? Check 5V_STB Press button POWER of remote control or unit to turn on the TV set, then check if X301-5#/6# (12V), X301-10# (5V) are normal or not? Disconnect power board from data...
  • Page 34 2. No picture, but sound is normal. No picture, but sound is normal. Are LOGO and OSD normal? Check if current channel that Check LVDS connection OSD displays is normal or not? HDMI TV/AV/VGA/ Check if power voltage of YPbPr panel backlight and backlight control pin X301-13# (3V) are normal or not?
  • Page 35 3. No sound, but the picture is normal. No sound, but the picture is normal. Check if there is output from X402? Check power 12/24V supplied Connection to speakers or for C302 is normal or not? speakers have problem. Power board has problem.

  • Page 36: Schematic Diagram

    2.5V_PGA 1.2V 1.8V_DDR2 ADC2P5 AVDD_33 AVDD_33_PM 3.3V L103 AVDD_33 3.3V_STB L107 AVDD_33_PM 1.2V 120ohm 3A 120ohm 3A 1.26V R133 DDR1 2.5V 2.5V 3.3V 002:A1;002:A2 HOTPLUGD DDR2 1.8V RXCKN_D RXCKP_D MVREF 001:H2 RX0N_D MVREF 2.2u C127 1.8V_DDR2 RX0P_D DVDD_NODIE C129 RX1N_D 100n C128 RX1P_D...
  • Page 37 3.3V_HDMI 3.3V_HDMI HDMI2_RX2+ HDMI2_RX2- AV_V 001:A3 R243 HDMI2_RX1+ HDMI_EN 001:E5 HDMI2_RX1- R244 HDMI2_RX0+ HDMI_HPD 001:A2 R271 R226 R245 HDMI2_RX0- AV_L 001:A4 HDMI2_RXC+ HDMI2_HPD BHPD TXSDA HDMI_SDA 001:A3 HDMI2_RXC- HDMI2_SDA BSDA TXSCL HDMI_SCL 001:A3 R246 CEC 001:A2;002:A2 HDMI2_SCL R272 H D M I _ R X C - 001:A2 BSCL TXCM...
  • Page 38 5V_STB R359 R323 R358 V304 N304 3 . 3 7 V 1 5 0 m A BL_ON 001:E3 BC847AW AZ1084S-ADJ V309 5V_STB D302 3.3V_STB AO3401A 3.3V B240-13-F 5V_STB N301 MP1496 R341 PWM wave: C304=NC,R311=0 200K C315 R311 BL_ON R324 4.7K V305 R352 PWM 001:E3;001:G5...
  • Page 39 3.3V L411 3.3V_AMP 120ohm 3A 3.3V L407 3.3V_TUNER 120ohm 3A R433 002:F4 POWEROFF_MUTE 3.3V_TUNER 3.3V_RFA R435 L416 D403 LL4148 R437 R438 C436 15nH 531A3A51H0 BC857AW C445 V401 C437 D404 2.2n L413 4.7n LL4148 NR8040T220M C446 R436 3.3V_TUNER 3.3V_RFB L417 12V_AMP 3.3V_AMP C438 15nH...
  • Page 40 X901 POWER SOURCE MENU VOL+ VOL- S907 S906 S905 S903 S904 S901 S902 R906 R905 R904 R903 R902 R901 1.5K 2.4K 4.3K Key board...
  • Page 41 LED1 GPR2503/P322 X911 R911 HRM538BB5117 R913 N911 Vout IR board...
  • Page 42 Power board...
  • Page 43 APPENDIX-A: Main assembly 9232ME7711 LCE-32R77 NAME MAIN COMPONENT AND IT'S NO. N101 MST6E182VGC (5270182003) N401 R620D (5270620002) Main processing XI6ME01001A0 N102 EN25Q32B-104HIP (5272532007) board N402 TAS5707 (5275707001) N201 IT6633E-P(5276633001) IR board XI635ME00200 Key board XI635ME00501 Power board XI6ME01020A0 Remote control...

  • Page 44: Appendix-B: Exploded View

    APPENDIX-B: Exploded view (LCE-32R77)
  • Page 45 PART LIST OF EXPLODED VIEW REF.No. DESCRIPION Front cabinet assembly IR assembly Sound box assembly Panel pressing block Display panel Power board assembly Standing pole bracket (right) Standing pole bracket (left) Main board assembly Interface baffle (right) Interface baffle (down) Back cover assembly Pedestal faceplate assembly Pedestal standing pole...
  • Page 46 PART LIST LCE-32R77 ver. REF.No. PARTS No. DESCRIPION Q'TY REMARK XI6632770080 Front cabinet assembly IR assembly XI635ME00200 Sound box assembly XI6170899A00 XI5810080700 Panel pressing block Display panel XI6379000400 1 HV320WX2-200X XI6ME01020A0 Power board assembly Standing pole bracket (right) X5810A78800 Standing pole bracket (left)
  • Page 47 Appendix: Installing the Stand If the stand is provided, please read these instructions thoroughly before attempting this installation. afety Precautions: 1.Please read these instructions thoroughly prior to attempting this installation. 2.Be sure to handle this product very carefully when attempting assembly. If you are unsure of your capability, or the use of tools necessary to complete this activity, refer to a professional installer or service personnel.
  • Page 49 April 2012...

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