LC-37HV6U SERVICE MANUAL SY3M1LC37HV6U LCD COLOR TELEVISION LC-37HV6U MODEL In the interests of user-safety (Required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identical to those specified should be used.
LC-37HV6U IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are thor- oughly familiar with all safety checks and the servicing guidelines which follow: WARNING ground connected to an earth ground. » Use an AC voltmeter having with 5000 ohm per volt, 1.
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LC-37HV6U PRECAUTIONS A PRENDRE LORS DE LA REPARATION Ë Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants. AVERTISSEMENT de 0,15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une...
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LC-37HV6U Precautions for using lead-free solder 1 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.
LC-37HV6U SPECIFICATIONS Item 37" LIQUID CRYSTAL TELEVISION, Model: LC-37HV6U LCD panel 37" Advanced Super View & BLACK TFT LCD 3,147,264 dots (1366 × 768 × 3dots) Number of dots TV-standard (CCIR) American TV Standard NTSC System Function Receiving VHF/UHF VHF 2-13ch, UHF 14-69ch...
LC-37HV6U REMOVING OF MAJOR PARTS Ë Ë Ë Ë Ë AVC System 1. Remove the five top cabinet retaining screws and slide the top cabinet backward to remove it. 2. Remove the four side cover retaining screws on both the right and left sides and slide the side covers backward to remove them.
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LC-37HV6U 7. Remove the system/control terminal retaining: 7-1. Remove the four hex head screws securing the terminals of the system and control cables (white). 7-2. Remove the four screws securing the terminal of the system cable (gray). 7-3. Remove the four rear chassis retaining screws.
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LC-37HV6U 11. Remove the AV unit: 11-1. Remove the five AV unit retaining screws and remove the AV unit. 11-2. Remove the three AV unit angle retaining screws and remove the angle. 12. Remove the fan: 12-1. Remove the two cooling fan retaining screws and remove the cooling fan.
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LC-37HV6U Ë Ë Ë Ë Ë Display 1. Remove the top and bottom terminal covers. 2. Remove the four lock screws from the speaker. Disconnect the speaker terminals and detach the speaker. 3. Remove the four lock screws from the stand, and detach the stand.
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LC-37HV6U 9. Open the six FFC holders. Remove the three lock screws from each of the right and left FFC holders. Disconnect all the FFC connectors and detach the right and left FFC holders. 10.Remove the two lock screws from the speaker jack PWB, disconnect the connector, and detach the speaker jack PWB.
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LC-37HV6U 13. Remove the eight lock screws from the Monitor PWB, and detach the main PWB. 14. Remove the six lock screws from the power PWB, and detach the power PWB. 15. Remove the four lock screws from the audio PWB, and detach the audio PWB.
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LC-37HV6U • Precautions in handling the liquid crystal panel 1. Handle the liquid crystal panel in a clean room (Humidity: 50% or more). 2. Be sure to wear an earth wristband. 3. Be careful not to drop and shock the liquid crystal panel.
LC-37HV6U ADJUSTMENT PROCEDURES (AVC SYSTEM) Preparation for adjustment 1. The product has been adjusted and optimized in the factory. If the product needs to be readjusted for some reason, e.g., after parts replacement, follow the instructions shown below. 2. Control parameter values set in the in-process adjustment mode has been stored in the corresponding registers.
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2. In-process adjustment screen layout Page Source of input Color system HDCP Model name 1/13 INPUT2 N358 HDCP: OFF MONITOR: LC-37HV6U KEY WRITE INDUSTRY INIT CENTER Version 1.01 (U 2003/09/12 A ) OSD Version 1.00 (J 2003/06/20 A ) CVIC Version W2002/11/27 11:33...
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LC-37HV6U 1) Analog adjustment (1) Voltage adjustment Item Adjusting conditions/points Adjusting procedure • Connect a DC voltmeter to TP4 on the PC I/F unit. 3.3 V Adjustment Page: 2 Location: TP4 Move the cursor to "Ë+Badj.3.3V" and use "VOL" (+) and (–) keys to adjust the voltage to 3.30 ±...
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LC-37HV6U (2) Tuner adjustment Item Adjusting conditions/points Adjusting procedure • Use a signal generator to provide the tuner with a Signal setting Signal: NTSC RF Signal RF signal of 193.25 MHz on the split field color bar. • The color saturation of the color bar must be 75%.
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LC-37HV6U (3) NTSC signal adjustment Item Adjusting conditions/points Adjusting procedure • Use a signal generator to provide the split field color Signal setting Signal: NTSC bar to the video image input pin of video input 1. Split field color bar •...
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LC-37HV6U Item Adjusting conditions/points Adjusting procedure MAIN N358 TINT Page: 3 Adjust "MAIN N358 TINT" so that the bottom edges Adjustment Location: Pin (3) of P801 of the waveform at pin (3) of P801 are in line with each other as shown below.
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LC-37HV6U (4) Component 15 kHz signal adjustment Item Adjusting conditions/points Adjusting procedure Signal setting Signal: Provide the 100% color bar source of component 15k Component 15k to the component input pin of video input 1. 100% color bar Signal pin:...
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LC-37HV6U 2) Digital white balance adjustment (1) NTSC signal adjustment Item Adjusting conditions Adjusting procedure 1. Provide the adjusting N358 signal (adjustment conditions) to the video image input pin of Setting video input 1. Page: 8 1. Press "1" on the remote controller in the process...
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LC-37HV6U (3) COMPONENT HDTV signal adjustment Item Adjusting conditions Adjusting procedure 1. Provide the adjusting 1080i component signal (adjustment conditions) to the component Setting vide input pin of video 1. Page: 10 1. Press "1" on the remote controller in the process...
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LC-37HV6U 4. Factory setting Item Adjusting conditions Adjusting procedure 1. Move the cursor to the "INDUSTRY INIT" line, use the INDUSTRY INIT Page: 1 VOL key to turn the system on and press the ENTER key. Factory setting is complete when the process adjustment menu disappears and the system enters the TUNER input mode.
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LC-37HV6U Ë Ë Ë Ë Ë Adjustment Model Menu List (AVC System) Do not change items, the adjustment procedure of which is not described in this manual. Inadvertent changes of such items may result in unexpected or unrecoverable errors. PAGE...
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LC-37HV6U PAGE LINE NAME FUNCTION ËCOMP33K White Balance COMPHDTV R CUTOFF Digital white balance adjustment of component (1080i) COMPHDTV G CUTOFF Digital white balance adjustment of component (1080i) COMPHDTV B CUTOFF Digital white balance adjustment of component (1080i) COMPHDTV R DRIVE...
LC-37HV6U UPGRADING INSTALLED PROGRAMS Programs installed in the product are mainly divided into the following two categories: ∫ Main programs (for AVC System) ∫ Monitor program (for Display) CAUTON: Exercise great care to hide the procedure in entering the in-process adjustment mode from the customer.
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LC-37HV6U [How to rewrite the monitor program] 1) After entering the process adjustment mode, start up the terminal software obtained separately. (Freeware products available on the Internet can be used.) 2) Make setting as shown below. Baud rate: 9600 Data: 8 bits...
LC-37HV6U ADJUSTMENT PROCEDURES (Display) The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.
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LC-37HV6U 5. Adjustment 5-1.VLS BIAS (15V) voltage adjustment Shift to the "VLS BIAS" item with the cursor UP/DOWN key and select a numeric value with the cursor RIGHT/LEFT key. Connect a digital volt meter to TP4101 (or C4180+) on the monitor PWB and make a adjustment with the cursor UP/DOWN key so that the voltage becomes 15.00V±0.05V.
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LC-37HV6U (1) Adjusting method using RS-232C • Get a personal computer with a COM port (RS-232C) equipped with WINDOWS 95/98/me/2000/xp and a RS-232C crossing cable • Start up the set with the RS-232C cable connected. • Start up the terminal software.
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LC-37HV6U Lamp error detection 1. Feature description This liquid-crystal TV incorporates a lamp error detection feature (lamp error detection) that automatically turns OFF the power for safety under abnormal lamp or lamp circuit conditions. If anything is wrong with the lamp or lamp circuit or the lamp error detection feature is activated for some reason, the following will result.
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LC-37HV6U •List of process adjustment modes (Display)
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LC-37HV6U Process adjustment list 1st level Page Item Setting range Initial value Contents GRAYLEVEL 0~255 COM BIAS 0~255 VLS BIAS 0~255 L ERR RESET Zero clear MODE 50Hz, 60Hz, PC 60Hz PWM CTRL PWM FREQ 0~4095 1289 PWM DUTY1 0~4095...
LC-37HV6U TROUBLE SHOOTING TABLE AVC System Power is not supplied. (The front LED does not come on.) Is the power cord connector connected to the main body Connect the power cord correctly and turn ON the power correctly? Replace the fuse. If the fuse blows when the power SW is turned Is the fuse (F701) normal? ON, replace D701 and IC 701 and perform checking again.
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LC-37HV6U TROUBLE SHOOTING TABLE (Display) No sound or picture comes out. Does the power LED Is the power LED Is the AC cable Replace the light up in green. blinking in red? normal? AC cable. Blinking once? To "The backlight does not go on"...
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LC-37HV6U No picture comes out. Is the RSET terminal (pin (3)) Perform checking around X2201 of IC2206 set to "H"? connected to pin (161) of IC2206. Is the clock (91.3 MHz) applied to Is X2201 connected to pin (161) of...
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LC-37HV6U Noise is caused to the moving picture when the QS drive is set to ON. Check IC4701 and Is OSTEMP.AD on the 3rd page of the IC4901 and the peripheral process adjustment mode set to 255? circuitry. Is the harness connected correctly...
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LC-37HV6U The backlight does not go on. Is any of the fuses of Is the control signal applied to Is the harness connected correctly F7501-F7504, pin (2) (OFL1) and pin (3) between the Monitor PWB and F7551-F7553 and (OFL2) of P7506 and P7616?
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LC-37HV6U The whole screen is whitish (LCD power supply) Remove the FFCs attached to SC4101, SC4102 and SC4601- SC4604 (because the panel may be broken). Check the power supplies. Check the power supplies to SC4101 and SC4102 in particular. Is the voltage of R4114 about 6V? Check the performance of Q4101 and Q4112 and check the resistance around IC4102.
LC-37HV6U MAJOR IC INFORMATIONS (AVC System) ∫ IC2501 (RH-iX3370CEN1Q) IC for decoding audio signals. It serves as an S-IF audio signal decoder and an audio data selector. ∫ IC2518 (NJU26150) The NJU26150 is a processor IC that consists of 24-bit DSP (Digital Signal Processor) core and various interfaces.
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LC-37HV6U ∫ IC7001 (µPD64084) This IC provides 3D processing of NTSC signals and thus high resolution Y/C separation of the main image signals received from IC1301. It incorporates a 4M-bit frame delay memory board and features one-chip 3D Y/C separation.
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LC-37HV6U ∫ PC I/F unit ∫ IC10004 (CXA3506R) 3-ch, 8-bit 120MSPS A/D converter incorporating AMP and PLL. This IC process video signals supplied to the interface board. On the main side, video signals (analog RGB) from CN6 are inputted to IN1 of IC10004. On the PC side, vide signals (analog RGB) from CN8 are inputted to IN2 of IC10004.
LC-37HV6U MAJOR IC INFORMATION (Display) ∫ IC2206 (SII861) This is a DVI receiver. The TMDS differential signal that is transmitted from the system cable is processed here to produce 24-bit RGB signals, H and V sync signals, and DE signal in the odd and even numbers.
LC-37HV6U LCD Panel Gray Level Signal L RGB Thermistor 8 x 3 x 2 Gray Level Ope-Amp IC4101(A706WJ) DA control R/C UNIT KEY UNIT Light control, Resolution control, Test pattern R/C, LED, OPC 16 (data) SDRAM (OS ODD) IC4902 (A312WJ) 17 (address etc.)
LC-37HV6U DESCRIPTION OF SCHEMATIC DIAGRAM VOLTAGE MEASUREMENT CONDITION: 1. When the exclusive-use AC adapter is used, the colour bar signal of colour bar generator for service is input to get the normal screen. When the audio is minimized, the voltage value is measured with the 20 kΩ/V tester.
USA: Contact your nearest SHARP Parts Distributor to order. 3. NO. DE PIECE 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll- in CANADA: Contact SHARP Electronics of Canada Limited Free; 1-800-BE-SHARP Phone (416) 890-2100 MARK: SPARE PARTS-DELIVERY SECTION Ref.
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LC-37HV6U Ref. No. Part No. Description Code Ref. No. Part No. Description Code DUNTKC015FE04 R1799 VRS-CY1JF100JY J 10 1/16W Metal Oxide POWER UNIT (AVC System) (Continued) SWITCH SW701 QSW-P0591CEZZ J MAIN POWER å R741 VRS-CY1JF103JY J 10k 1/16W Metal Oxide...
CPNLCA112WJ01 J Front Panel Ass’y Not Available – Front Panel — GCOVAA288WJSA J Door Cover GDORFA018WJSA J Door HBDGBA013WJSA J Badge, "SHARP" HDECQA166WJSA J LED Cover HiNDPA290WJSA J Indication Label JBTN-2074CEKB J Power Button LANGF9552CESA J Angle, for Door LANGTA024WJFW...
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LC-37HV6U CABINET AND MECHANICAL PARTS (Display)
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