Page 1: Table Of Contents
TopPage LC-37AD5E SERVICE MANUAL No. S77K9LC37AD5E LCD COLOUR TELEVISION LC-37AD5E MODEL CONTENTS SAFETY PRECAUTION CHAPTER 5. MAJOR IC INFORMATIONS IMPORTANT SERVICE SAFETY PRE- MAJOR IC INFORMATIONS ......5-1 CAUTION ............i Precautions for using lead-free solder ....ii CHAPTER 6. OVERALL WIRING DIAGRAM/BLOCK DIAGRAM CHAPTER 1.
Page 2: Safety Precaution
LC-37AD5E LC37AD5E SAFETY PRECAUTION Service Manual IMPORTANT SERVICE SAFETY PRECAUTION Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING • Use an AC voltmeter having with 5000 ohm per volt, or higher, sen- sitivity or measure the AC voltage drop across the resistor.
Page 3: Precautions For Using Lead-Free Solder
LC-37AD5E Precautions for using lead-free solder Employing lead-free solder • “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.
Page 4: Chapter 1. Operation Manual Specifications
LC-37AD5E CHAPTER 1. LC37AD5E OPERATION MANUAL Service Manual [1] SPECIFICATIONS urkis h/G r 1 – 1...
Page 5: Operation Manual
LC-37AD5E [2] OPERATION MANUAL 1 – 2...
Page 6 LC-37AD5E 1 – 3...
Page 7 LC-37AD5E 1 – 4...
Page 8 LC-37AD5E 1 – 5...
Page 9 LC-37AD5E 1 – 6...
Page 10: Dimensions
LC-37AD5E [3] DIMENSIONS Units: inches (mm) 919.0 114.8 116.5 822.6 293.0 547.0 200.0 1 – 7...
Page 11: Chapter 2. Removing Of Major Parts
LC-37AD5E CHAPTER 2. LC37AD5E REMOVING OF MAJOR PARTS Service Manual [1] REMOVING OF MAJOR PARTS 1. Remove the 4 lock screws , and the 12 lock screws . Detach the Rear Cabinet. Rear Cabinet 2. Remove the 6 lock LCD Side Holders Set each holder like this way.
Page 12 LC-37AD5E 3. Remove the 9 lock screws . Detach the Stand Angle Unit. STAND ANGLE UNIT 4. Remove the 2 lock screws . Detach the Top Control Cover Ass'y. TOP CONTROL COVER ASS'Y TOP CONTROL COVER Wire "KM" to WH Wire "KM"...
Page 13 LC-37AD5E 5. Remove the 2 lock scrwes , and the 4 lock screws . Detach the Center Angle-L/R. CENTER ANGLE R CENTER ANGLE L 6. Remove the 2 lock scrwes . Detach the Digital Shield. DIGITAL SHIELD 2 – 3...
Page 14 LC-37AD5E 7. Remove all the connectors from PWBs. Wire "SP" FOR Wire "SP" Wire "SP-L" Wire "SP-R" Wire "SP" to WH SP-L SP-R Wire "SP" to SP Lib Wire "RA" #Stop to move Core, for "RA" wire No shape to Shield Angle FOR Wire "RA"...
Page 15 LC-37AD5E 8. Remove the 5 lock screws . and detach the Chassis Tray Unit. 9. Remove all the connectors from PWBs. Wire "LB" to WH Wire "LB" Wire "SH" Wire "LV" Chassis Tray Unit Wire "LV" to WH Wire "LA"...
Page 16 LC-37AD5E 10.Remove the 1 lock screw . Detach the Terminal Cover. 11.Remove the 2 lock screws . Detach the D-Tuner Unit. D-TUNER Unit B to B connector Tuner Unit Chassis Tray Unit 2 – 6...
Page 17 LC-37AD5E 12.Remove the 2 lock screws . Detach the R/C, LCD Unit. R/C LED UNIT With Wire "RA" Wire "RA" LED COVER #R/C LED PWB Set to gide lib of CAB-A Wire "RA" #R/C LED PWB Set to gide lib of CAB-A Wire "RA"...
Page 18 LC-37AD5E 13.Remove the 4 lock screws , and 8 lock screws . Detach the LCD Angle. LCD ANGLE TOP LCD ANGLE BOTTOM 2 – 8...
Page 19: Chapter 3. Adjustment Procedure
The hardware tools requirement are: 1. A Modem-null (Cross type) DB9 female to DB9 female cable. 2. An adaptor DB9 male to mini-Din 9 pin male cable (Sharp Code: QCNWGA015WJPZ) 3. Make the connections as indicated in the figure: Computer TV set Before using RS-232C updating method is necessary to configure a Terminal PC software.
Page 20 LC-37AD5E 4) Click on “File\Properties” menu for selecting the General and ASCII properties as follows: 5) Select “New Connection” in the File Menu. 6) Answer “Yes” to close current connection and “Yes” to save session “P55_9600bps”. 7) Create a new connection with the name “P55_115200bps”.
Page 21 LC-37AD5E 1) Check the connection between TV set and PC, sending a wrong command, as for example: “aaa”. TV set returns an “ERR” label as an syntaxis ERROR (Not correct order or sequence). 2) Send the command “DWMD” to enter TV set in Download Mode. The TV set answer sending same symbol continuosly. If this symbol character doesn’t appear, please don’t worry and pass to next step.
Page 22 The hardware tools requirement are: 1. A Modem-null (Cross type) DB9 female to DB9 female cable. 2. An adaptor DB9 male to mini-Din 9 pin male cable (Sharp Code: QCNWGA015WJPZ) 3. Make the connections as indicated in the figure: Computer...
Page 23 LC-37AD5E 1) Select: Serial→COM X→ O.K. 2) Select: Terminal 3) Choose the same options as the above picture. 3 – 5...
Page 24 LC-37AD5E 4) Select: Setup → Serial port → O.K. Appear the follow screen: 5) Select follows settings: Serial port to use: COM x Baud rate: 9600 Data: 8 bits Parity: none Stop: 1 bit Flow control: none Enter O.K. 6) Check the connection between TV set and PC, sending a wrong command, as for example: “aaa”. TV set returns an “err” label as an syntaxes ERROR (Not correct order or sequence).
Page 25 LC-37AD5E 7) Select: File → Transfer → XMODEM → Sent 8) Choose the file for upgrade and click “Open”. 9) After select “Open” the upgrade process starts as follows: 3 – 7...
Page 26 3.1. Jig RS-232 Method Description • Hardware requirements: 1. A modem null (Cross type) DB9 female to DB9 female cable. 2. The Jig Kit (Sharp Code: QCNWKA012WJZZ) 3. Make the connections as in the below figure. Computer TV Set (CI Terminal)
Page 27 LC-37AD5E • How to setup the “Winupload” software for the first time: 1. Start “Winupload”. It will appear the following picture. 2. Select the most suitable RS232 Serial Port from “Port Setting” - “Process” Menu. 3. Select the following settings from “Port Settings” Menu.
Page 28 LC-37AD5E 3. Establish connection on Winupload Software. 4. Select “Upload URT file” 5. Select and open the “.urt” data file from data directory NOTE: Consider the version shown below just an example, may be is not the latest one, and could be different depending on the TV set destination (market/Country) or model.
Page 29 LC-37AD5E While the TV set is uploading the software, the following information is shown on the TV set screen. Then, data transfer from PC to TV set finishes when the “Upload progress completed” label appears in the “Winupload” screen. Now, the TV set made some additional verification (Items #2 to #7).
Page 30 Windows Media Drives, hanged of the “My Computer” tree (“J” Drive in the picture showed below). But, if the PCMCIA-CF card had been formatted previously by SMM, directly the PCMCIA-CF drive will appear in the SMM formatted Drives box (Sharp Drives). Please go to Item #6. 3 – 12...
Page 31 NOTE: All FC’s data of the inside are erased. 6. If SMM formatted card already appears under SHARP DRIVES box please continue, if not try to repeat from item #1. Select origin folder and “.img” data file to be written in the CF card.
Page 32 LC-37AD5E 7. First of all, select copy target drive and then use Drag & drop for the “.img” file. 8. Wait, copy is in process. 9. Copy is finished, when the Copying progress bar disappears and the name of data file appears in the File Box.
Page 33 LC-37AD5E 10. Close SMM application. 11. Remove PCMCIA safely using the Windows Task bar pop up menu (Right-click over the Tray Icon). 12. Now, the PCMCIA-CF card is prepared to update the TV set. Procedure to update the TV Set using PCMCIA-CF Card: 1.
Page 34: Entering And Exiting The Adjustment Process Mode
LC-37AD5E [3] Entering and exiting the adjustment process mode 1) Unplug the AC power cord of running TV set to force off the power. 2) While holding down the “VOL (-)” and “INPUT” keys on the set at once, plug in the AC power cord to turn on the power.
Page 35: Adjustment Process Mode Menu
LC-37AD5E [5] Adjustment process mode menu The character string in brackets [ ] will appear as a page title in the adjustment process menu header. Page Line Item Description Remarks (adjustment detail, etc.) 1/11 [INFO] Main Version LEW07 01. XX (XX/XX/XX)
Page 36: Special Features
LC-37AD5E Page Line Item Description Remarks (adjustment detail, etc.) 8/11 [M GAMMA 1-3] M GAMMA R 1 W/B adjustment, gradation 1R adjustment value M GAMMA G 1 W/B adjustment, gradation 1G adjustment value M GAMMA B 1 W/B adjustment, gradation 1B adjustment value...
Page 37: Video Signal Adjustment Procedure
LC-37AD5E [7] Video signal adjustment procedure * The adjustment process mode menu is listed in Section 5. 1. Signal check 1. Signal generator level adjustment check (Adjustment to the specified level) : 0.7Vp-p ±0.02Vp-p (Pedestal to white level) • Composite signal PAL 2.
Page 38: White Balance Adjustment
LC-37AD5E [8] White Balance Adjustment Adjustment gradation values (IN) appear on page 7/11 of process adjustment, and adjustment initial values (offset value) appear on pages 8/11 and 9/11. For white balance adjustment, adjust the offset values on pages 8/11 and 9/11.
Page 39: Initialization To Factory Settings
LC-37AD5E [9] Initialization to factory settings Caution: When the factory settings have been made, all user setting data, including the channel settings, are initialized. (The adjustments done in the adjustment process mode are not initialized.) Keep this in mind when initializing these settings.
Page 40: Public Mode (Hotel Mode)
LC-37AD5E [11] Public Mode (Hotel Mode) 1. How to Enter in the Public Mode (Hotel Mode). Turn on the power and enter in the Adjustment Process mode (ADJ1 or Service Mode) as usual. In the [INIT], Page 2/11 of Service, turns ON the Public Mode option.
Page 41: Chapter 4. Troubleshooting Table Trobleshooting Table
LC-37AD5E CHAPTER 4. LC37AD5E TROUBLESHOOTING TABLE Service Manual [1] TROBLESHOOTING TABLE Power unit operation check. Are the power cord and harness in the unit properly connected? Connect the power cord and harness properly, and turn on the power. Is F701 normal?
Page 42 LC-37AD5E No sound from speakers No sound output in all modes. Is the audio signal properly sent from pins (28) (L-ch) and (27) Check IC3002 or peripheral circuits. (R-ch) of IC3002? Is the audio signal of pins (3) (L-ch) and (5) (R-ch) of IC303 (OP- Check SC2704 and P1201 or peripheral circuits.
Page 43 LC-37AD5E No sound from external input devices (1) No sound from an external input device connected to EXT1 (SCART1). <EXT1> Is IN1-L audio signal sent from pin (6) of SCART1 terminal Check pins (6) and (2) of SCART1 and connection to an external (J1101) to pin (14) of IC3002 (VCT)? input device.
Page 44 LC-37AD5E No sound from external input devices (5) No sound from EXT5 (AUDIO) connecting an external input device. Check that Option-HDMI Setup-Audio select is set to “Analog”. <EXT5> Is HDMI-L audio signal sent from J2701 terminal to pin (14) of Check the line between J2701 and IC2704.
Page 45 LC-37AD5E No sound except from speakers (1) No audio output from EXT1 (SCART) terminal. Checklist: 1) Is the MUTE button on the remote control set to ON? ••• Set to OFF. 2) Check the connection to external devices. ••• Is there any improper connection? Is audio signal sent to pins (3) (L-ch) and (1) (R-ch) of EXT1 Check the connection to EXT1 (J1101) and external devices.
Page 46 LC-37AD5E No sound except from speakers (3) No audio output from AUDIO_OUTPUT terminal. Checklist: 1) Is the MUTE button on the remote control set to ON? ••• Set to OFF. 2) Check the connection to external devices. ••• Is there any improper connection?
Page 47 LC-37AD5E The unit does not enter the DTV mode. Or, the DTV menu does not appear. Digital UNIT: Is a voltage supplied from IC4701 (3.3V-REG)/IC4704 (1.8V- Check peripheral circuits of IC4701/IC4704 of IC4702. REG)/IC4702 (5V-REG)? (IC4701, IC4704, IC4702, Q4703 and POW-ON_LINE, etc.) Do X4001(32.768kHz)/ X4002(27MHz) oscillate?
Page 48 LC-37AD5E No video output during DTV reception. Colour of Images are not right. D-TUNER UNIT: Is digital signal fed from pins (20) and (21) of TU201 (TUNER) to Check TU201 and its peripheral circuits and if I2C is accessed pins (11) and (10) of IC202 (COFDM)? between TU201 and IC202.
Page 49 LC-37AD5E No picture on the display (1) No video output in all modes. Is LVDS video signal (LVDS_0N/0P-3N/3P) sent to pins (141)/ Check IC3002 and its peripheral circuits. (140)-(129)/(128) of IC3002 (VCT), and is CLK signal (LVDS_CN/ CP) sent to pins (132)/(131)? Is LVDS video signal (LVDS_0N/0P-3N/3P) sent to pins (20)/(19)- Check the line between IC3002 and P2305.
Page 50 LC-37AD5E <When EXT1 is used for external input> No picture on the display (3) No EXT1-Composite output of the external input system. Checklist: on the remote control set up correctly? ••• See the operation manual and set “INPUT SOURCE” to “EXIT1”.
Page 51 LC-37AD5E <When EXT1 is used for external input> No picture on the display (5) No EXT1-Y/C output of the external input system. Checklist: on the remote control set up correctly? ••• See the operation manual and set “INPUT SOURCE” to “EXIT1”.
Page 52 LC-37AD5E <When EXT2 is used for external input> No picture on the display (7) No EXT2-RGB output of the external input system. Checklist: on the remote control set up correctly? ••• See the operation manual and set “INPUT SOURCE” to “EXIT2”.
Page 53 LC-37AD5E <When EXT3 is used for external input> No picture on the display (9) No EXT3 output of the external input system. Checklist: on the remote control set up correctly? ••• See the operation manual and set “INPUT SOURCE” to “EXIT3”.
Page 54 LC-37AD5E <When EXT4 is used for external input> No picture on the display (11) No EXT4 (15pin-D-SUB terminal) output of the external input sys- tem. Checklist: on the remote control set up correctly? ••• See the operation manual and set “INPUT SOURCE” to “EXIT4”.
Page 55 LC-37AD5E <When EXT5 is used for external input> No picture on the display (12) No EXT5 (HDMI) output of the external input system. Checklist: on the remote control set up correctly? ••• See the operation manual and set “INPUT SOURCE” to “EXT5”.
Page 56 LC-37AD5E <When EXT6 is used for external input> No picture on the display (13) No EXT6 (HDMI) output of the external input system. Checklist: on the remote control set up correctly? ••• See the operation manual and set “INPUT SOURCE” to “EXT6”.
Page 57 LC-37AD5E <During external connection> No picture on the monitor (1) SCART1: No picture appears on EXT1 - connected monitor during the tuner (U/V) reception. Checklist: on the remote control set up correctly? ••• See the operation manual and 1) Are input terminal on back of TV and “INPUT SOURCE” button set “INPUT SOURCE”...
Page 58 LC-37AD5E <During external connection> No picture on the monitor (2) SCART2: No picture from EXT1 appears on EXT2-connected monitor. NOTE: Normally, if the screen during display is sent to EXT2, no picture is sent to EXT2. Checklist: on the remote control set up correctly? ••• See the operation manual and 1) Are input terminal on back of TV and “INPUT SOURCE”...
Page 59 LC-37AD5E <During external connection> No picture on the monitor (3) SCART2: No picture from EXT3 appears on EXT2- connected monitor. Checklist: on the remote control set up correctly? ••• See the operation manual and 1) Are input terminal on back of TV and “INPUT SOURCE” button set “INPUT SOURCE”...
Page 60: Chapter 5. Major Ic Informations
LC-37AD5E CHAPTER 5. LC37AD5E MAJOR IC INFORMATIONS Service Manual [1] MAJOR IC INFORMATIONS 1. MAJOR IC INFORMATIONS 1.1. IC202 (RH-iXB964WJZZQ) The STv0362 is a single-chip demodulator using COFDM (coded orthogonal frequency division Multiplexing) and is intended for digital terrestrial receivers using compressed video, sound and data services. It converts IF or base band differential signals to MPEG-2 format by processing OFDM carriers.
Page 61 The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier systems. With this amplifier a compact 1x 20 W closed loop self-oscillating digital amplifier system can be built. The audio output of LC-37AD5E are set to 10W, respectively. 1.8. IC4203 (RH-IXC100WJZZQ) This IC is a high performance CMOS super technology 16Mbit Flash Memory.
Page 62 LC-37AD5E 2. Detailed ICs Information 2.1. IC201 (VHiTDA9886+-1Y) 2.1.1 Block Diagram 2.1.2 Pin Connections and short description Pin No. Pin Name Pin Function VIF1 VIF differential input1 VIF2 VIF differential input2 Output1 (open-collector) FMPLL — FM-PLL for loop filter DEEM...
Page 63 LC-37AD5E 2.2. IC202 (RH-iXB964WJZZQ) 2.2.1 Pin Connections and short description Pin No. Pin Name Pin Function Clock and resets NOT_RESET Hardware reset, active low XTAL_I Analog Crystal oscillator input/external clock (2.5 V) XTAL_O Analog Crystal oscillator output VDDA_2V5 — Supply Analog oscillator supply (2.5 V) VDDA_2V5 —...
Page 64 LC-37AD5E 2.3. IC301/IC302 (VHiTDA8931T-1Y) 2.3.1 Block Diagram 5 – 5...
Page 65 LC-37AD5E 2.3.2 Pin Connections and short description Pin No. Pin Name Pin Function VSSD Negative digital supply voltage; heat spreader VSSA Negative analog supply voltage Inverting input Non inverting input VDDA Positive analog supply voltage POWERUP Power-up input ENABLE Enable input...
Page 66 LC-37AD5E 2.4. IC1905 (VHiSii9025+-1Q) 2.4.1 Block Diagram 2.4.2 Pin Connections and short description Pin No. Pin Name Pin Function Digital Video Output Pins 144, 143, 142, 141, 140, 137, 136, 133, 132, 131, 130, 129, Q0-23 24-bit Output Pixel Data Bus...
Page 67 LC-37AD5E Pin No. Pin Name Pin Function CSCL Configuration I2C Clock. 5 V Tolerant CSDA Configuration I2C Data. 5 V Tolerant SCDT Indicates active video at HDMI input port CLK48B Data Bus Latch Enable R0PWR5V Port 0 Transmitter Detect. 5V Tolerant R1PWR5V Port 1 Transmitter Detect.
Page 68 LC-37AD5E 2.5. IC3002 (RH-iXB624WJN1Q) 2.5.1 Pin Connections and short description Pin No. Pin Name Pin Function 656O6/TDOFW JTAG Interface Data Output (FW Controller). (Not used) 656O5/TDIFW JTAG Interface Data Input (FW Controller). (Not used) 656O4/TMSFW JTAG Interface Mode Select Input (FW Controller). (Not used) 656O3/TCLK JTAG Interface Clock Input (TV Controller).
Page 69 LC-37AD5E Pin No. Pin Name Pin Function DGI3 Digital Video Green 3 Input. DGI2 Digital Video Green 2 Input. DGI1 Digital Video Green 1 Input. DGI0 Digital Video Green 0 Input (LSB). DBI7 Digital Video Blue 7 Input. DBI6 Digital Video Blue 6 Input.
Page 70 LC-37AD5E Pin No. Pin Name Pin Function LVDSA_4N LVDS Channel 1 bit 4 Negative Output. VSUP3.3LVDS — Supply Digital Voltage LVDS Port, 3.3V. LVDSA_3P LVDS Channel 1 bit 3 Positive Output. LVDSA_3N LVDS Channel 1 bit 3 Negative Output. GND3.3V_LVDS —...
Page 71 LC-37AD5E Pin No. Pin Name Pin Function VIN2 Analog Video 2 CVBS Input. VIN1 Analog Video 1 CVBS Input. VSUP3.3VO — Supply Voltage Analog Video Output, 3.3 V. VOUT3 Analog CVBS Video 3 Output. (Test point) VOUT2 Analog CVBS Video 2 Output.
Page 72 LC-37AD5E 2.7. ICIC1710 (RH-IXB823WJZZQ) 2.7.1 Pin Connections and short description Pin No. Pin Name Pin Function Sheet Name EXP [7] Outport [7] (I2C SEL signal) DTI2CSEL EXP [6] Outport [6] (Digital circuit reset signal) DTM_RESET EXP [5] Outport [5] (Digital circuit power control signal)
Page 73 LC-37AD5E Pin No. Pin Name Pin Function Sheet Name GND* – Ground. Ground. VCCINT – VCC (3.3V) FPGA_VCC GND* – Ground. Ground. GNDINT – Ground. Ground. GND* – N.C. N.C. GND* – N.C. GND* – N.C. GND* – N.C. GND* –...
Page 74 LC-37AD5E 2.8. IC4001 (RH-iXB680WJZZQ) 2.8.1 Pin Connections and short description Pin No. Pin Name Pin Function Digital power-supply ball assignment A8, B8, B19, B20, C8, — 1.6 V power supply. D8, F1, F2, F3, F4, U23, U24, V1, V2, V3, V4,...
Page 75 LC-37AD5E Pin No. Pin Name Pin Function JTAG ball assignment AE14 Boundary scan test data input (5 V tolerant) AC14 Boundary scan test mode select (5 V tolerant) AF16 Boundary scan test clock (5 V tolerant) AF14 not TRST Boundary scan test logic reset (5 V tolerant)
Page 76 LC-37AD5E Pin No. Pin Name Pin Function Digital audio ball assignment AF17 SCLK Serial clock (5 V tolerant) AE17 PCMDATA1 PCM data out (5 V tolerant) AE16 PCMCLK External PCM clock input or internal PCM clock output (5 V tolerant)
Page 77 LC-37AD5E 2.9. IC4201/IC4202 (RH-iXB742WJZZQ) 2.9.1 Block Diagram 2.9.2 Pin Connections and short description Pin No. Pin Name Pin Function Active on the positive going edge to sample all inputs. Disables or enables device operation by masking or enabling all inputs except CLK, CKE and DQM.
Page 78 LC-37AD5E Pin No. Pin Name Pin Function Latches column addresses on the positive going edge of the CLK with CAS low. Enables column access. Enables write operation and row precharge. Latches data in starting from CAS, WE active. LDQM Makes data output Hi-Z, tSHZ after the clock and masks the output.
Page 79 LC-37AD5E 2.10. IC4203 (RH-iXC100WJZZQ) 2.10.1 Block Diagram 5 – 20...
Page 80 LC-37AD5E 2.10.2 Pin Connections and short description Pin No. Pin Name Pin Function Address Inputs Data inputs/Outputs DQ10 DQ11 DQ12 DQ13 DQ14 DQ15A-1 Data inputs/Outputs or Address input Chip Enable Output Enable Write Enable Reset/Block Temporary Unprotect Ready/Busy Output BYTE Byte/Word Organization Select —...
Page 81: Overall Wiring Diagram
LC-37AD5E CHAPTER 6. LC37AD5E OVERALL WIRING DIAGRAM/BLOCK DIAGRAM Service Manual [1] OVERALL WIRING DIAGRAM OVERALL WIRING DIAGRAM 6 – 1...
Page 82: Main Block Diagram
LC-37AD5E [2] MAIN BLOCK DIAGRAM MAIN BLOCK DIAGRAM 6 – 2...
Page 83: System Block Diagram
LC-37AD5E [3] SYSTEM BLOCK DIAGRAM SYSTEM BLOCK DIAGRAM 6 – 3...
Page 84: Power Block Diagram
LC-37AD5E [4] POWER BLOCK DIAGRAM POWER BLOCK DIAGRAM 6 – 4...
Page 85: Chapter 7. Printed Wiring Board
LC-37AD5E CHAPTER 7. LC37AD5E PRINTED WIRING BOARD Service Manual [1] MAIN UNIT PRINTED WIRING BOARD MAIN Unit (Side A) 7 – 1...
Page 86 LC-37AD5E MAIN Unit (Side A Chip) LUG1701 D1902 SC2705 SC2707 LUG1703 D1907 D1908 FB2302 IC1902 C2731 D2302 D2301 IC1901 FB1901 D2304 D2303 FB1902 D1903 FB2301 LUG1705 P2702 RJ3020 RJ3019 R1934 C1935 C1909 C1910 C3019 C1957 C1947 C1944 C1937 C1926 C1925...
Page 87 LC-37AD5E MAIN Unit (Side B) 7 – 3...
Page 88 LC-37AD5E MAIN Unit (Side B Chip) FB2701 R2702 FB2309 C1907 C1908 R1914 IC1903 R1913 R1916 IC1904 R1915 R3012 C2730 RJ2306 RJ3015 RJ2706 FB3001 R3005 RJ2707 Q1903 Q1901 Q1904 Q1902 IC2301 R1911 R1912 D1905 RJ2708 C2301 R1905 R2310 D1906 R1718 R2314...
Page 89: Av Unit Printed Wiring Board
LC-37AD5E [2] AV UNIT PRINTED WIRING BOARD AV Unit (Side A) LUG301 D1102 D1105 LUG304 D1117 R1121 D1116 P1201 P1101 P1102 FL1104 D1121 FL1105 R1111 C1130 IC1102 R1113 D1103 D306 FL1101 R1114 C358 D308 D1107 R1117 C357 D307 FL1102 IC1101...
Page 90 LC-37AD5E AV Unit (Side A Chip) FB1101 D1102 R1127 R1119 D1105 P1101 P1102 P1201 R1131 C1105 C1108 D1117 R361 C1154 D1121 D318 C1109 R1110 FL1104 C364 R355 FL1108 I C 1102 C1130 R1113 R1111 FL1105 C358 C359 R1128 D1103 FB1102...
Page 91 LC-37AD5E AV Unit (Side B) P1102 P1101 P1201 7 – 7...
Page 92: Power Unit Printed Wiring Board
LC-37AD5E [3] POWER UNIT PRINTED WIRING BOARD POWER Unit (Side-A) 7 – 8...
Page 93 LC-37AD5E POWER Unit (Side-B) 7 – 9...
Page 94: D-Tuner Unit Printed Wiring Board
LC-37AD5E [4] D-TUNER UNIT PRINTED WIRING BOARD [5] KEY UNIT PRINTED WIRING BOARD D-TUNER Unit KEY Unit (Side A) (Side A Chip) L201 R205 C215 D203 R219 IC205 R224 FL202 IC208 R246 C216 IC206 L207 C249 R211 C245 C224 C225...
Page 95: Digital Unit Printed Wiring Board
LC-37AD5E [6] DIGITAL UNIT PRINTED WIRING BOARD DIGITAL Unit (Side A) 7 – 11...
Page 96 LC-37AD5E DIGITAL Unit (Side A Chip) 7 – 12...
Page 97 LC-37AD5E DIGITAL Unit (Side B) 7 – 13...
Page 98 LC-37AD5E DIGITAL Unit (Side B Chip) R 4604 R 4603 R 4602 R 4645 R 4633 C4029 R 4601 S C4601 IC4003 C4208 R 4250 R 4246 R 4646 C4210 R 4647 R 4245 R 4648 C4711 R 4249 R 4649...
Page 99: R/C, Led Unit Printed Wiring Board
LC-37AD5E [7] R/C, LED UNIT PRINTED WIRING BOARD R/C, LED Unit (Side A) R/C, LED Unit (Side A Chip) R112 R114 R102 R/C, LED Unit (Side B) 7 – 15...
Page 100: Description Of Schematic Diagram
LC-37AD5E CHAPTER 8. LC37AD5E SCHEMATIC DIAGRAM Service Manual [1] DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: 1. The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 230V. Signals are fed by a colour bar signal generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.
Page 101 LC-37AD5E [2] SCHEMATIC DIAGRAM MAIN Unit-1 8 – 2...
Page 102 LC-37AD5E MAIN Unit-2 8 – 3...
Page 103 LC-37AD5E MAIN Unit-3 8 – 4...
Page 104 LC-37AD5E MAIN Unit-5 8 – 5...
Page 105 LC-37AD5E MAIN Unit-6 8 – 6...
Page 106 LC-37AD5E AV Unit 8 – 7...
Page 107 LC-37AD5E POWER Unit AND SHADED COMPONENTS=SAFETY RELATED PARTS 8 – 8...
Page 108 LC-37AD5E D-TUNER Unit AND SHADED COMPONENTS=SAFETY RELATED PARTS 8 – 9...
Page 109 LC-37AD5E KEY Unit 8 – 10...
Page 110 LC-37AD5E R/C, LED Unit 8 – 11...
Page 111 LC-37AD5E DIGITAL Unit-1 8 – 12...
Page 112 LC-37AD5E DIGITAL Unit-2 8 – 13...
Page 113 LC-37AD5E DIGITAL Unit-3 8 – 14...
Page 114 LC-37AD5E DIGITAL Unit-4 8 – 15...
Page 115: Parts Guide
LC-37AD5E PartsGuide PARTS GUIDE No. S77K9LC37AD5E LCD COLOUR TELEVISION LC-37AD5E MODEL CONTENTS PRINTED WIRING BOARD DUNTKD972WE01 (KEY Unit) ASSEMBLIES DUNTKE222WE01 (R/C, LED Unit) LCD PANEL AND TUNER (NOTE: THE PARTS HERE SHOWN ARE DUNTKD628FM22 (DIGITAL Unit) SUPPLIED AS AN ASSEMBLY BUT NOT INDEPENDENTLY.)
Page 116 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [1] PRINTED WIRING BOARD ASSEMBLIES MAIN Unit DUNTKD890FM32 AV Unit DUNTKD604FM28 POWER Unit DUNTKD605FM21 D-TUNER Unit DUNTKD984FM04 KEY Unit DUNTKD972WE01 R/C, LED Unit DUNTKE222WE01 DIGITAL Unit DUNTKD628FM22 [2] LCD PANEL AND TUNER (NOTE: THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY BUT NOT INDEPENDENTLY.)
Page 117 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DUNTKD890FM32 (MAIN Unit) C1959 Capacitor 0.1 25V Ceramic VCKYCY1EF104ZY C1960 Capacitor 1000p 50V Ceramic VCKYCY1HB102KY C1965 Capacitor 1000p 50V Ceramic VCKYCY1HB102KY C1967 Capacitor 1000p 50V Ceramic VCKYCY1HB102KY C1968 Capacitor 1000p 50V Ceramic...
Page 118 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DUNTKD890FM32 (MAIN Unit) C3038 Capacitor 0.1 25V Ceramic VCKYCY1EF104ZY C3039 Capacitor 15p 50V Ceramic VCCCCY1HH150JY C3040 Capacitor 10 16V Ceramic RC-KZA073WJZZY C3041 Capacitor 10 16V Ceramic RC-KZA073WJZZY C3042 Capacitor 0.1 25V Ceramic...
Page 119 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DUNTKD890FM32 (MAIN Unit) FB3018 Balun BLN-0254TA RBLN-0254TAZZY FB3020 Balun BLN-0254TA RBLN-0254TAZZY FB3307 Balun BLN-0061TA RBLN-0061TAZZY FB3308 Balun BLN-0061TA RBLN-0061TAZZY FL2301 Filter RFILN0003TAZZY FL2302 Filter RFILN0003TAZZY FL2303 Filter RFILN0003TAZZY IC1701 IC BU4239G-TR...
Page 120 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DUNTKD890FM32 (MAIN Unit) Q3004 Transister 3LN01S-TL-E VS3LN01S///-1Y R1704 Resistor 0 1/16W Metal Oxide VRS-CY1JF000JY R1705 Resistor 0 1/16W Metal Oxide VRS-CY1JF000JY R1707 Resistor 0 1/16W Metal Oxide VRS-CY1JF000JY R1709 Resistor 10k 1/16W Metal Oxide...
Page 121 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DUNTKD890FM32 (MAIN Unit) R1930 Resistor 91 1/16W Metal Oxide VRS-CY1JF910FY R1931 Resistor 91 1/16W Metal Oxide VRS-CY1JF910FY R1932 Resistor 1M 1/16W Metal Oxide VRS-CY1JF105JY R1933 Resistor 1.5k 1/16W Metal Oxide...
Page 122 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [3] DUNTKD890FM32 (MAIN Unit) X1901 Crystal 28.322MHz RCRSCA146WJZZY X3001 Crystal 20.25MHz RCRSCA171WJZZY [4] DUNTKD604FM28 (AV Unit) C301 Capacitor 0.027 16V Ceramic VCKYCY1CB273KY C302 Capacitor 0.027 16V Ceramic VCKYCY1CB273KY C303 Capacitor 0.22 50V Ceramic...
Page 123 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [4] DUNTKD604FM28 (AV Unit) C1125 Capacitor 470p 50V Ceramic VCKYCY1HB471KY C1126 Capacitor 470p 50V Ceramic VCKYCY1HB471KY C1127 Capacitor 100p 50V Ceramic VCCCCY1HH101JY C1128 Capacitor 100p 50V Ceramic VCCCCY1HH101JY C1129 Capacitor 100p 50V Ceramic...
Page 124 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [4] DUNTKD604FM28 (AV Unit) D1122 Zener Diode 3.9V RH-EX1026CEZZY D1123 Zener Diode 3.9V RH-EX1026CEZZY D1201 Zener Diode EX1239CE RH-EX1239CEZZY FB1101 Balun BLN-0062TA RBLN-0062TAZZY FB1102 Balun BLN-0062TA RBLN-0062TAZZY FB1103 Balun BLN-0077TA RBLN-0077TAZZY...
Page 125 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [4] DUNTKD604FM28 (AV Unit) R318 Resistor 82 1/2W Metal Oxide VRS-TW2HF820JY R319 Resistor 1.2k 1/16W Metal Oxide VRS-CY1JF122JY R320 Resistor 1.2k 1/16W Metal Oxide VRS-CY1JF122JY R321 Resistor 10k 1/16W Metal Oxide...
Page 126 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [4] DUNTKD604FM28 (AV Unit) R1160 Resistor 1k 1/16W Metal Oxide VRS-CY1JF102JY R1173 Resistor 100k 1/16W Metal Oxide VRS-CY1JF104JY R1177 Resistor 1k 1/16W Metal Oxide VRS-CY1JF102JY R1179 Resistor 1k 1/16W Metal Oxide...
Page 127 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [5] DUNTKD605FM21 (POWER Unit) C792 Capacitor 1 10V Ceramic VCKYCY1AB105KY C793 Capacitor 0.1 16V Ceramic VCKYCY1CB104KY C794 Capacitor 10 6.3V Ceramic RC-KZA388WJZZY C795 Capacitor 1 10V Ceramic VCKYCY1AB105KY C796 Capacitor 1 10V Ceramic...
Page 128 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [5] DUNTKD605FM21 (POWER Unit) P703 Plug 7Pin QPLGZ0738CEZZ P704 Plug 14Pin (LA) QPLGNA053WJZZ Q702 Transistor 2SC3928A-T112-1R VS2SC3928AR-1Y Q704 Transistor 2SC3928A-T112-1R VS2SC3928AR-1Y Q708 Transistor 2SC3928A-T112-1R VS2SC3928AR-1Y Q710 Transistor 2SC3928A-T112-1R VS2SC3928AR-1Y Q712 Transistor 2SC3928A-T112-1R...
Page 129 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [5] DUNTKD605FM21 (POWER Unit) R857 Resistor 0 1/8W Metal Oxide VRS-TQ2BD000JY R858 Resistor 2.7k 1/16W Metal Oxide VRS-TV1JD272JY R859 Resistor 12k 1/16W Metal Oxide VRS-CY1JF123JY R860 Resistor 4.7k 1/16W Metal Oxide...
Page 130 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [6] DUNTKD984FM04 (D-TUNER Unit) C239 Capacitor 0.1 25V Ceramic VCKYCY1EF104ZY C240 Capacitor 1000p 50V Ceramic VCKYCY1HB102KY C241 Capacitor 33 10V Electrolytic VCEASX1AN336MY C242 Capacitor 1000p 50V Ceramic VCKYCY1HB102KY C243 Capacitor 0.1 25V Ceramic...
Page 131 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [6] DUNTKD984FM04 (D-TUNER Unit) R214 Resistor 22 1/16W Metal Oxide VRS-CY1JF220JY R215 Resistor 180 1/16W Metal Oxide VRS-CY1JF181JY R216 Resistor 10k 1/16W Metal Oxide VRS-CY1JF103JY R217 Resistor 10k 1/16W Metal Oxide...
Page 132 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [9] DUNTKD628FM22 (DIGITAL Unit) C4001 Capacitor 1 50V Electrolytic VCEASX1HN105MY C4002 Capacitor 0.01 50V Ceramic VCKYCY1HB103KY C4003 Capacitor 0.1 25V Ceramic VCKYCY1EF104ZY C4004 Capacitor 0.1 25V Ceramic VCKYCY1EF104ZY C4005 Capacitor 0.01 50V Ceramic...
Page 133 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [9] DUNTKD628FM22 (DIGITAL Unit) C4641 Capacitor 10 16V Electrolytic VCEASX1CN106MY C4701 Capacitor 22 6.3V Ceramic RC-KZA070WJZZY C4702 Capacitor 1 16V Ceramic VCKYTV1CB105KY C4703 Capacitor 0.1 25V Ceramic VCKYCY1EF104ZY C4705 Capacitor 1500p 50V Ceramic...
Page 134 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [9] DUNTKD628FM22 (DIGITAL Unit) R4005 Resistor 10k 1/16W Metal Oxide VRS-CY1JF103JY R4006 Resistor 10k 1/16W Metal Oxide VRS-CY1JF103JY R4007 Resistor 10k 1/16W Metal Oxide VRS-CY1JF103JY R4008 Resistor 10k 1/16W Metal Oxide...
Page 135 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [9] DUNTKD628FM22 (DIGITAL Unit) R4248 Resistor 47 1/16W Metal Oxide VRS-CY1JF470JY R4249 Resistor 5.6k 1/16W Metal Oxide VRS-CY1JF562JY R4250 Resistor 47 1/16W Metal Oxide VRS-CY1JF470JY R4251 Resistor 47 1/16W Metal Oxide...
Page 136 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [9] DUNTKD628FM22 (DIGITAL Unit) R4661 Resistor 47k 1/16W Metal Oxide VRS-CY1JF473JY R4662 Resistor 270 1/16W Metal Oxide VRS-CY1JF271FY R4663 Resistor 270 1/16W Metal Oxide VRS-CY1JF271FY R4664 Resistor 270 1/16W Metal Oxide...
Page 137 LC-37AD5E [10] CABINET PARTS 14-2 14-2 14-1 18-2 18-3 18-1...
Page 138 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [10] CABINET PARTS Front Cabinet Ass'y (AD5E(B)/AD5S(B)) CCABAB804WJ01 Front Cabinet Ass'y (AD5E(G)/AD5S(G)/AD5R(G)) CCABAB804WJ02 Front Cabinet Ass'y (AD5R(B)) CCABAB804WJ03 Front Cabinet Not Available Speaker Sheet Not Available Spacer L, x2 Not Available...
Page 139 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [10] CABINET PARTS Screw, x4 (FOR LCD UNIT) XEBSN40P10000 Screw, x2 (FOR CONTROL SLD) XJPS730P04WS0 Screw, x15 (PWB12/TUNER3) XJPS730P08WS0 Model Label TLABNC117WJZZ [11] SUPPLIED ACCESSORIES X6 X4 PRICE PART PARTS CODE...
Page 140 LC-37AD5E [12] PACKING PARTS (Not Replacement Item)
Page 141 LC-37AD5E PRICE PART PARTS CODE DESCRIPTION RANK MARK DELIVERY [12] PACKING PARTS (Not Replacement Item) Packing Case (AD5E/AD5S) SPAKCD504WJZZ Packing Case (AD5R) SPAKCD507WJZZ Buffer Material SPAKXB527WJZZ Wrapping Paper SPAKPA338WJZZ Polyethylene Bag SSAKAA009WJZZ Polyethylene Bag SSAKAA010WJZZ Case No. Label TLABM5584BMZZ [13] SERVICE JIGS...
Page 142 LC-37AD5E COPYRIGHT © 2007 BY SHARP CORPORATION ALL RIGHTS RESERVED. No Part of this publication may be reproduced, stored in a retrieval system, or transmitted in any from or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

Sharp LC-37AD5E Service Manual

Safety Precaution

Chapter 1. Operation Manual Specifications

Chapter 2. Removing of Major Parts

Chapter 3. Adjustment Procedure

Chapter 4. Troubleshooting Table Trobleshooting Table

Chapter 5. Major IC Informations

Chapter 7. Printed Wiring Board

Chapter 8 Schematic Diagram

Parts Guide

Quick Links

SERVICE MANUAL

Related Manuals for Sharp LC-37AD5E

Summary of Contents for Sharp LC-37AD5E

Table of Contents