Hisense LHD32D33EU Service Manual
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Hisense LHD32D33EU Service Manual

Chassis: sis231
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LCD Television
Product Type: LHD32D33EU
Chassis: SIS231
Hisense Electric Co.,Ltd
AUG,2013

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Summary of Contents for Hisense LHD32D33EU

  • Page 1: Service Manual

    LCD Television Service Manual Product Type: LHD32D33EU Chassis: SIS231 Hisense Electric Co.,Ltd AUG,2013...

  • Page 2: Table Of Contents

    5. Power assign & Signal process.........................- 15 - 5.1 SIS231 Power assign ........................- 15 - 5.2 SIS231 Signal process ........................- 15 - 5.3. Troubleshooting ..........................- 16 - 6. Schematic circuit diagram ........................- 32 - 7. Explode view ............................- 42 - ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 3: Service Manual

    USE OF NON-AUTHORIZED PARTS WILL VOID THE MANUFACTURE'S WARRANTY Proper service and repair is important to the safe, reliable operation of all Hisense Equipment. The service procedures recommended by Hisense and described in this Service Guide are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose.

  • Page 4: Warning

    Ref. No. in the parts list. Use of non-manufacturer's recommended parts may create shock, fire, or other hazards. Under no circumstances should the original design be modified or altered without written permission from Hisense assumes no liability, express or implied, arising out of any unauthorized modification of design. Service tech assumes all liability.
  • Page 5 (9) Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 6: Notes

    · Perform a safety check when servicing is completed. Verify that the peripherals of the serviced points have not undergone any deterioration during servicing. Also verify that ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...
  • Page 7 The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the set. ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 8: Product Specifications

    LCD TV Service Manual ------------------------------------------------------------------------------------------------------------------------ 2. Product Specifications: 2.1 Specification: Notes:Features,appearance and specifications are subject to change without notice. ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 9: Main Board

    LCD TV Service Manual ------------------------------------------------------------------------------------------------------------------------ 2.2 Main Board: The “main board & power board image”is only for reference, other SIS231 products refer to the actual units to determine the boards, please. ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 10: Wiring Diagram

    LCD TV Service Manual ------------------------------------------------------------------------------------------------------------------------ 2.3 Wiring Diagram: Note: The above Wiring Diagram is only for reference, other SIS231 products refer to the actual units to determine the connectors, please. ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 11: Factory/Service Osd Menu And Adjustment

    4. When Balance value is “0”, Enter 1->9->6 ->9 in sequence. Note: If necessary, re-do number keys. 5. Factory OSD appears. 6. Press the standby button then AC turn off and restart the TV, which can exit factory OSD menu. 3.2 Factory OSD Menu ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 12: Software Upgrading

    The system begins to upgrade when the upgrade file automatically loaded, and displays a progress bar in the OSD, with LED lights flash. 4.2.3 After update success, it will have the following tips. Please AC off and AC on. ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 13: Upgrade When Power Up

    Serial port can upgrade the whole program. Serial port upgrade is very slow, it takes about 20 minutes.As far as possible without serial upgrade.The serial upgrade tools isuart2spi_tool.Serial port upgrade steps: 4.4.1.Open the serial port upgrade kits uart2spi_tool, choosing the right serial number. 4.4.2.Click "connect". 4.4.3.AC on. ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...
  • Page 14 4.4.7Click "ok", and began to upgrade. At the same time, the progress bar at the bottom of began to move. Progress bar run twice, the first time is erased, and the second time is written. 4.4.8To be written to complete, will pop-up prompts, can again on the electricity turned ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 15: Power Assign & Signal Process

    LCD TV Service Manual ------------------------------------------------------------------------------------------------------------------------ 5. Power assign & Signal process 5.1 SIS231 Power assign 5.2 SIS231 Signal process 5.3. Troubleshooting 6. Schematic circuit diagram 7. Explode view ------------------------------------------------------------------------------------------------------------------------ Hisense Confidential...

  • Page 16: Troubleshooting

    TP.SIS231.P83X Maintenance Manual ◎ Power troubleshooting ◎ Display troubleshooting ◎ Audio troubleshooting ◎ Function troubleshooting ◎ Power board troubleshooting...
  • Page 17 5.3.1. Block Diagram Of Mainboard Circuit BL_ON DVD Power LVDS(10bit) +12V DVD+5V +12V Headphone BL_ON LVDS (YPBPR) 8Ω KEYPAD SGM330 MUTE R-Speaker Audio-out DVD_Audio YPBPR/DVD 8Ω SCARTRGB/CVBSAUDIOIN SIS23X CVBS AUDIO OUT DDR3 L-Speaker USB-/+ MINI YPBPR CVBS+AUDIO IF-/+ PCMCIA SPI Flash 3*HDMI PC Audio COAX...
  • Page 18 5.3.2. Power Troubleshooting Check Pin1、2 of CN3 for 12V Check if the power Check power on the TV board. board is OK? Check the LD1 and CD29 Repair or change for 5V? the power board. 1. Check the Pin2/4 of Check if the UD1 is OK? UL11 for 3.3V.
  • Page 19 5.3.3. Display Troubleshooting (blank screen or show nothing) Indicator light on? Check if R66 exist 560-600 Check if UD1 Pin 1 is 5V Check if power supply is ok MHZ clock (such as 5V,1.0V,1.5V,3.3V) Check if Y1 or Check if external power Check if UL2 have 3.3V Check unmoral power Check if R42 is OK...
  • Page 20 5.3.4. Display Troubleshooting (white screen ) White screen Check if VCC_Panel voltage is ok ?(the Pin1~3 of CN12? Check if the LVDS cable is Check the S pole of right and if well connected QM2 is 5V or 12V with the board Check if U1 jumper contact Check if G pole Change the...
  • Page 21 5.3.5. Display Troubleshooting (picture badness ) Picture display abnormal Check if the VCC_Panel voltage is right ? Change the Check the LVDS LVDS cable cable is ok ? LCD self is ok Change LCD Check if the circuit between the Repair this damage LVDS jack and U6 are well soldered? circuit...
  • Page 22 5.3.6. Audio Troubleshooting (no sound ) No sound Check if audio signal Input is normal Repair external Check if the volume is rightly set or if audio equipment mute function is off Set it rightly Check if the output signal on the Pin18/20 &...
  • Page 23 5.3.7. Function Troubleshooting (TV fault) TV can’t search channel, or no signal external RF input signal is ok ? Check if the Pin 1 of UT2 is 3.3V Check the pin 16,17 of UT2 I C signal Check if the pin 6 voltage of UT2 is right ？ Check if the pin 9/10 of UT2 has signal output ? Check circuit between UT2...
  • Page 24 5.3.8. Function Troubleshooting (HDMI no sound ) Make sure input signal source is regular ? Signal source is not regular , check external equipment PC/AV channel sound is normal ？ EDID is right ？ Refer to “no sound ” troubleshooting Check if Check HDMI U1 is damage...
  • Page 25 5.3.9. Function Troubleshooting (HDMI no picture ) No signal or picture abnormal Check if the HDMI cable is right and if well connected with the board Repair welding or HDMI periphery change HDMI terminal circuit is ok ? Correct abnormal change U1 component...
  • Page 26 5.3.10. Function Troubleshooting (VGA no single ) No single Check if the VGA cable is right? or signal output equipment is right ? Correct setup equipment ， Repair the circuit of VS, HS or change VGA cable Check circuit between input Repair the circuit terminal to U1，...
  • Page 27 5.3.11. Function Troubleshooting (YPBPR or CVBS no signal) No signal Check if the signal cable is right? and single output equipment setup right? Correct setup equipment ， Check RI1、RI2、RI3 or change signal cable /RI31、RI32、RI33? Check circuit between input Repair RI1、RI2、RI3 terminal to U1，...
  • Page 28 5.3.12. Function Troubleshooting (other) 1. SCART no signal USB is abnormal 2. SCART missing colors Repair the USB power Repair the R.G.B circuit...
  • Page 29 5.3.13. Power board troubleshooting(Block Diagram ) ON/ OFF Main ADJ/PWM Feed board back Power Output Rec fier filter input convertor filter 19V(24V/32V/50V) driver...
  • Page 30 5.3.14. Power board troubleshooting(Non output ) Non output, IR indicator light slake Check if 12V、19V(24V/32V/50V) output normal Check the power Change damaged Check if FB0 Open components components damage or not Change short Check EMI open or L N short components Check if EB1 voltage about √2Vac...
  • Page 31 IR indicator light up but backlight slake Check if LED output cable is connect correc on Check ADJ&PWM& ON/OFF Control signal check is brightness is in dim status Check if UB10 PIN 1 voltage is above 12V Check if LED output short Check the power components (QB10)
  • Page 32 BL_ON DVD Power LVDS(10bit) +12V DVD+5V +12V Headphone BL_ON LVDS (YPBPR) 8Ω KEYPAD SGM330 MUTE R-Speaker Audio-out DVD_Audio YPBPR/DVD 8Ω SCART RGB/CVBS AUDIO IN SIS23X CVBS AUDIO OUT L-Speaker DDR3 USB-/+ MINI YPBPR CVBS+AUDIO IF-/+ PCMCIA SPI Flash 3*HDMI PC Audio COAX HDMI COAX...
  • Page 33 10uF-0805-X5R-± 20%-16V 10uF-0805-X5R-± 20%-16V 10uF-0805-X5R-± 20%-16V 10uF-0805-X5R-± 20%-16V 100Kohm-0402-± 5%-1/16W 100ohm-0402-±5%-1/16W 0.1uF-0402-Y5V-+80%-20%-16V CD43 0.1uF-0402-Y5V-+80%-20%-16V CD18 CD10 0.1uF-0402-Y5V-+80%-20%-16V CD41 0.1uF-0402-Y5V-+80%-20%-16V SMD5845-4R7M-032 UD41 SMD5845-4R7M-032 NC/22pF-0402-NPO-± 5%-50V 1.0V_SW LD43 TEST 1V0_M RD41 5V_STB POW_EN 1.0V_EN RD42 TEST 1V0_M RD43 TPS54329EDDAR CD29 CD28 CD20 CD25 CD44 CD45...
  • Page 34 5V_VMUX AV_IN/ AV_IN NC/1Kohm-0402-±5%-1/16W 220pF-0402-NPO-±5%-50V RQ14 NC/470ohm-0402-±1%-1/16W 75ohm-0402-±5%-1/16W NC/0.1uF-0402-Y5V-+80%-20%-16V VGA_RIN AV11 47ohm-0402-±5%-1/16W A V3-120A02-01Z1( 0.047uF-0402-X7R-±10%-16V UARTA_TX AV_IN/ VCOM 2V5_CLAMP VGA_TXD RV31 0.047uF-0402-X7R-±10%-16V UARTA_RX 47ohm-0402-±5%-1/16W VGA_RXD RV32 5V_STB 330ohm-0402-±5%-1/16W NC/AVLC18S02003 0.047uF-0402-X7R-±10%-16V 4K7ohm-0402-±5%-1/16W 75ohm-0402-±5%-1/16W CV31 CV32 RQ15 CQ14 RQ16 RQ17 RQ18 1Kohm -0402-± 5%-1/16W 4K7ohm-0402-±5%-1/16W NC/AVLC18S02003 AV_R...
  • Page 35 HDMIB_RX2_DP HDMIB_RX2_DN HDMIB_5V HDMIB_RX1_DP HDMIB_RX1_DN HDMIB_RX0_DP HDMIB_RX0_DN HDMIB_RX_CLK_DP HDMIB_RX_CLK_DN RH23 HDMIB_SCL/ HDMIB_SDA/ HDMIB_5V HDMIA_5V HOTPLUG_B/ HDMIB_5V HDMIA_RX2_DP HDMIA_5V HDMIB_RX2_DP HOTPLUG_B/ RH21 CEC_A RX2+ RX2+ HDMIA_RX2_DN HDMIB_RX2_DN RX2- RX2- HDMIA_RX1_DP HDMIB_RX1_DP SHELL(GND) RX1+ SHELL(GND) RX1+ HOTPLUG_A/ QH21 RH22 HOTPLUGB 2*10PIN-2.0-D-H-M HDMIA_RX1_DN HDMIB_RX1_DN RX1- RX1-...
  • Page 36 RXOC_N CF61 RXOC_P CF62 XTALI NC/5pF-0402-NPO-±5%-50V SPI_CLK OSCI_24M SPI_CLK XTALO NC/5pF-0402-NPO-±5%-50V SPI_DO OSCO_24M SPI_DO FLASH_SPI_DI SPI_DI XTALI SPI_CS0_N SPI_CS0N XTALO RXEC_N CF63 RXEC_P CF64 NC/5pF-0402-NPO-±5%-50V 33ohm-0402-± 5%-1/16W MISC LVDS NC/5pF-0402-NPO-±5%-50V RESET_H AUX_PWROK PWRBTN_N RXE4_P CN12 LVDSA_TX0P RXE4_N VCC_Panel VCC_Panel LVDSA_TX0N RXE3_P VCC_Panel ENTEST...
  • Page 37 SVIDEO1_C AV_Y0/C0 SVIDEO1_Y AV_Y1 AV_IN AUDIO EARPHONE_ROUT AU_VBG AV_Y2 AU_VBG HP_R SCART_VI ANALOG VGA_RIN EARPHONE_LOUT AV_Y3 YPP_R0 HP_L VIDEO VGA_R0_REF SC_RI INPUT/OUTPUT AV_Y4 YPP_R0_REF LINE_IN_R1 IN/OUT HIGH VGA_GIN SC_LI AMP RIN YPP_G0 LINE_IN_L1 SPK_R AMP LIN VCOM SPEED VGA_G0_REF AV_REF YPP_G0_REF SPK_L ANALOG...
  • Page 38 1V0_M AVDD1P0_PLL 0ohm-0402-±5%-1/16W 0.1uF-0402-Y5V-+80%-20%-16V SIS231C1 1V5_DDR 1V0_M OVDD1P5 OVDD1P5 IVDD1P0 1V0_M AVDD1P0_HDMI OVDD1P5 IVDD1P0 OVDD1P5 IVDD1P0 IVDD1P0 0ohm-0402-±5%-1/16W IVDD1P0 3V3_M 1uF-0402-X5R-± 20%-6.3V IVDD1P0 0.1uF-0402-Y5V-+80%-20%-16V IVDD1P0 OVDD3P3 IVDD1P0 OVDD3P3 IVDD1P0 3V3_M_DDR OVDD3P3 IVDD1P0 OVDD3P3 IVDD1P0 OVDD3P3 IVDD1P0 OVDD3P3 IVDD1P0 OVDD3P3 IVDD1P0 3V3_STB 3V3_M AVDD3P3_HDMI...
  • Page 39 RA22 AMPVCC 12V_OFF NC/0ohm-1206-±5%-1/4W SK34A-SMA 470uF-16V-± 20%-8×12-105 -XL EARPHONE_LOUT CA10 PH-ALOUT EARPHONE_ROUT PH-AROUT 4700pF-0402-X7R-± 10%-50V 10uF-0603-X5R-± 20%-6.3V 4700pF-0402-X7R-± 10%-50V 10uF-0603-X5R-± 20%-6.3V AVLC18S02003 180ohm-0402-±5%-1/16W AVLC18S02003 0.1uF-0402-Y5V-+80%-20%-16V 180ohm-0402-±5%-1/16W AVCC AMPVCC 0.1uF-0402-Y5V-+80%-20%-16V NC/100uF-16V-± 20%-5×11-105 - -F=2.5-XF NC/100Kohm-0402-±5%-1/16W AMPVCC NC/100uF-16V-± 20%-5×11-105 - -F=2.5-XF 10ohm-0603-±5%-1/10W 0ohm-0402-±...
  • Page 40 5V_M LC1117CLTR33 3V3_Tun CT17 CT31 CT20 CT23 3V3_Tun 750Kohm-0402-± 5%-1/16W 10uF-0603-X5R-± 20%-6.3V NC/10uF-0603-X5R-± 20%-6.3V 1uF-0402-X5R-± 20%-6.3V NC/10uF-0603-X5R-± 20%-6.3V 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V 1.8VRF 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V NC/10uF-0603-X5R-± 20%-6.3V 16MHz-± 20PPM-20PF-HC-49S 3V3_Tun 4K7ohm-0402-± 5%-1/16W 4K7ohm-0402-± 5%-1/16W 33ohm-0402-± 5%-1/16W 33ohm-0402-± 5%-1/16W RT15 3V3_Tun VDD_3P3_1 CLK_OUT 10pF-0402-NPO-±...
  • Page 41 主电路与输出部分 RB41 EMI 与整流滤波电路 RB42 RB43 BDB1 BDB3 RB44 CB11 LCB2 Vbridge BDB2 BDB4 RB45 SGND CYB1 CYB2 SGND NetLB10_1 RB46 LCB1 SGND RB47 RB12 CB13 RB48 Mylar RB18 RB13 RB20 RB61 24V/50V RB19 RB15 RB14 RB21 SGND RB56 RB57 RB22 RB23 RB24...

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