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Hitachi 50V500 Service Manual

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Table of Contents
NTSC
TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW
SAFETY PRECAUTIONS ......................................................................................................2
PRODUCT SAFETY NOTICE................................................................................................3
SERVICING PRECAUTIONS ................................................................................................4
AGENCY REGULATORY INFORMATION ............................................................................8

TABLE OF CONTENTS ........................................................................................................9

SPECIFICATIONS................................................................................................................11
FEATURES AND FUNCTIONS............................................................................................22
PWB ADJUSTMENTS ........................................................................................................49
TROUBLESHOOTING FLOW CHARTS..............................................................................95
DC VOLTAGE ......................................................................................................................96
WAVEFORMS ..................................................................................................................108
REPLACEMENT PARTS LIST ..........................................................................................114
EXPLODED VIEW ............................................................................................................138
PRINTED CIRCUIT BOARDS ..........................................................................................148
CONNECTION DIAGRAM ................................................................................................160
BLOCK DIAGRAM ............................................................................................................161
BASIC CIRCUIT SCHEMATIC DIAGRAM ........................................................................162
FINAL WIRING DIAGRAM ................................................................................................175
MAJOR ICS & UNITS ........................................................................................................179
OPTICAL ENGINE REMOVAL PROCEDURE ..................................................................181
NOTE: This product is to be serviced at board level.
CAUTION: Before servicing this chassis, it is important that the service technician read the
"Product Safety Notices" in this service manual.
Components having special safety characteristics are identified by a
Service Data and its supplements and bulletins. Before servicing the chassis, it is important that
the service technician read and follow the "Safety Precautions" and "Product Safety Notices" in
this Service Manual.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
JUNE 2003
Version 0178.04
LC37 Chassis
LC37F Chassis
SAFETY NOTICE
USE ISOLATION TRANSFORMER WHEN SERVICING
LCD REAR PROJECTION TELEVISION
PA
No. 0178
50V500/LC37
60V500A/LC37F
R/C: CLU-5729TSI
on the parts list in this
!
HHEA-MANUFACTURING DIVISION
Updated 05/27/04
Updated 02/25/04
Updated 01/14/04

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  • Page 1: Table Of Contents

    No. 0178 50V500/LC37 60V500A/LC37F LC37 Chassis NTSC R/C: CLU-5729TSI LC37F Chassis TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW SAFETY PRECAUTIONS ......................2 PRODUCT SAFETY NOTICE....................3 SERVICING PRECAUTIONS ....................4 AGENCY REGULATORY INFORMATION ................8 TABLE OF CONTENTS ......................9 SPECIFICATIONS........................11 FEATURES AND FUNCTIONS....................22 PWB ADJUSTMENTS ......................49...
  • Page 2: Safety Precautions

    LC37/LC37F SAFETY PRECAUTIONS Leakage Current Hot Check NOTICE: Comply with all cautions and safety-related notes Plug the AC line cord directly into a 120V AC 60Hz outlet (do not use located on or inside the cabinet and on the chassis or optic unit. an isolated transformer for this check).
  • Page 3: Product Safety Notice

    For continued ultraviolet protection, replace optic unit with always consult the current HITACHI Service Manual. A subscrip- original type or HITACHI equivalent type. tion to, or additional copies of HITACHI Service Manuals may be obtained at a nominal charge from HITACHI Sales Corporation. POWER SOURCE...
  • Page 4: Servicing Precautions

    LC37/LC37F SERVICING PRECAUTIONS CAUTION: Before servicing instruments covered by this service Immediately before handling any semiconductor component or data and its supplements and addenda, read and follow the SAFE- semiconductor-equipped assembly, drain off any electrostatic TY PRECAUTIONS on page 2 of this publication. charge on your body by touching a known earth ground.
  • Page 5 IC Removal/Replacement Inspect (on the circuit board copper side) the solder joints of Some Hitachi unitized chassis circuit boards have slotted holes the two “original leads”. If they are not shiny, reheat them (oblong) through which the IC leads are inserted and then bent flat and, if necessary, apply additional solder.
  • Page 6 Critical Copper Pattern requires special soldering techniques to ensure the maintenance of reliability and safety standards, contact Trace along the copper pattern from both wire sides of the pat- your Hitachi personnel. tern break and locate the nearest component directly connected to the affected copper pattern.
  • Page 7 LC37/LC37F NOTE: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose. Leadless Chip Components How to Replace Flat-lC (surface mount)
  • Page 8: Agency Regulatory Information

    Modifications The FCC requires the user to be notified that any changes or modifications made to this device that are not express- ly approved by Hitachi Home Electronics (America), Inc. may void the user’s warranty. Cables Any cables that are supplied with the system must be replaced with identical cables in order to assure compliance with FCC rules.
  • Page 9: Table Of Contents

    LC37/LC37F TO GO TO AN ADJUSTMENT, CLICK ON ITS HEADING BELOW TABLE OF CONTENTS I. SPECIFICATIONS ..................................11 1. Feature....................................11 2. Main Parts and A/V Terminals ............................12 3. White Balance ..................................13 4. Performance Specifications ..............................13 5. Terminals and Other Functions ............................14 5.1 Available signal Format and Frequency ........................14 5.2 Terminal Shape ................................14 5.3 DVI Specification ................................15...
  • Page 10 LC37/LC37F POWER P.W.B...................................92 1. Power Supply ..................................93 1.1 Ouput Voltage ................................93 1.2 Portection Circuit Blcok Diagram..........................94 TROUBLE SHOOTING FLOWCHART ..........................95 DC VOLTAGE ..................................96 VII. WAVEFORMS ..................................108 VIII. REPLACEMENT PARTS LIST ............................114 EXPLODED VIEW ................................138 PRINTED CIRCUIT BOARD ............................148 CONNECTION DIAGRAM ..............................160 XII.
  • Page 11: Specifications

    Dimensions: CATV Mid Band ....A-5 ~ A-1 50V500 60V500A ......A-I Super Band .
  • Page 12: Specifications

    LC37/LC37F I. SPECIFICATION BACK TO ADJUSTMENTS...
  • Page 13: White Balance

    LC37/LC37F I. SPECIFICATION 3. White Balance HIGH: 14,700K+23MPCD (X=0.260±0.01, Y=0.280±0.01) MEDIUM: 7500K+0MPCD (X=0.301±0.02, Y=0.311±0.02) STANDARD: 6500K+0MPCD (X=0.313±0.02, Y=0.329±0.02) Black/White: 5400K+0MPCD (X=0.334±0.02, Y=0.343±0.02) at screen center LC37 LC37F UE22331 UE22334 HIGH 14700 0.260 MEDIUM Black/White 257 cd/m 370 cd/m 240 cd/m 166 cd/m MAX ±4mm MAX ±3mm...
  • Page 14: Terminals And Other Functions

    LC37/LC37F I. SPECIFICATION BACK TO ADJUSTMENTS...
  • Page 15: Dvi Specification

    LC37/LC37F I. SPECIFICATION BACK TO ADJUSTMENTS...
  • Page 16: Aspect Specification For Each Input Source

    LC37/LC37F I. SPECIFICATION BACK TO ADJUSTMENTS...
  • Page 17: Aspect Mode: On

    LC37/LC37F I. SPECIFICATION BACK TO ADJUSTMENTS...
  • Page 18: Aspect Mode Resolution

    LC37/LC37F I. SPECIFICATION 6.1.3 Aspect Mode Resolution 4x3 Format 16x9 Format 16:9 16:9 16x9 Standard Standard 1386 dots 1386 dots 16:9 16:9 16x9 Zoom Zoom 16x9 Standard Standard 998 dots (95%) 998 dots (95%) 16x9 Expanded Expanded 16x9 Zoom1 Zoom1 Zoom2 16x9 Zoom2...
  • Page 19: Black Side Panel Operation

    LC37/LC37F I. SPECIFICATION 6.1.4 Black Side Panel Operation Menu Black Side Panel: ON Menu Black Side Panel: OFF Black Side Panel Gray Side Panel 6.1.5 Vertical Position Operation Input Vertical Position 16:9 16:9 Standard Zoom Standard Expanded Zoom1 Zoom2 Video NTSC 10 Step 10 Step...
  • Page 20: Pip Mode

    LC37/LC37F I. SPECIFICATION BACK TO ADJUSTMENTS...
  • Page 21: Pip Mode Resolution

    LC37/LC37F I. SPECIFICATION 6.2.2 PIP Mode Resolution POP Mode 1386 dots 1042 dots 344 dots PIP Mode 16x9 16x9 16x9 16x9 1386 dots 304 dots 16x9 16x9 16x9 16x9 16x9 16x9 16x9 16x9 1386 dots 455 dots SPLIT Mode STROBE Mode SURF12 Mode 693 dots 344 dots...
  • Page 22: Features And Functions

    LC37/LC37F II. FEATURES AND FUNCTIONS 1.0 FRONT PANEL CONTROLS PUSH PUSH VOL- VOL+ INPUT MENU PHOTO MC INPUT 5 VIDEO L/MONO S-VIDEO AUDIO EXIT SELECT MENU/SELECT button This button allows you to enter the MENU, making it possible to set TV features to your preference without using the remote. This button also serves as the SELECT button when in MENU mode.
  • Page 23 LAMP indicator - NORMAL OPERATION INDICATOR IS OFF If light is lit, the lamp has failed. See page 29-32 for lamp replacement procedure. Consult your Hitachi dealer for proper part. If light is blinking, lamp cover is not assembled securely after replacement.
  • Page 24 LC37/LC37F II. FEATURES AND FUNCTIONS 1.0 FRONT PANEL CONTROLS (CONT.) The front panel jacks are provided as a convenience to allow you to easily connect a camcorder or VCR as shown in the following examples: INPUT 5 INPUT 5 VIDEO L/MONO VIDEO L/MONO...
  • Page 25: Rear Panel Jacks

    LC37/LC37F II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS ANT A DVI-HDTV INPUT 1 (MONO)/L CONVERTER AUDIO Y/VIDEO ANT B INPUT 2 (MONO)/L AUDIO (MONO)/L VIDEO S-VIDEO INPUT 3 AUDIO TO HI-FI CENTER (MONO)/L VIDEO S-VIDEO INPUT 4 BLASTER VIDEO S-VIDEO MONITOR AUDIO...
  • Page 26 LC37/LC37F II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS (CONT.) Component: Y-P Inputs Inputs 1 and 2 provide Y-P jacks for connecting equipment with this capability, such as a DVD player or Set Top Box. You may use composite video signal for INPUT:2. 1.
  • Page 27 LC37/LC37F II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS (CONT.) TYPICAL FULL-FEATURE SETUP CONNECT TO (Provided) IR BLASTER Sensor D-VHS Outside antenna or cable TV coaxial cable DIGITAL OUTPUT DVD Player 2-Way signal splitter HDTV Set-Top Box OUTPUT OUTPUT OUTPUT ANT A VCR #1 DVI-HDTV...
  • Page 28 LC37/LC37F II. FEATURES AND FUNCTIONS 2.0 REAR PANEL JACKS (CONT.) • S-VIDEO connections are provided for high performance laserdisc players, VCRs etc. that have this feature. Use these connections in place of the standard video connection if your device has this feature. •...
  • Page 29: Lamp Replacement

    30-45 minutes. If “LAMP” indicator is still lit, check the lamp unit assembly. NOTES: • Contact your Hitachi dealer for a new lamp unit. Using other lamps may cause damage to the TV Set. TYPE NAME: LC37 LAMP ASSEMBLY PART NUMBER: UX21511 •...
  • Page 30 LC37/LC37F II. FEATURES AND FUNCTIONS 3.0 LAMP REPLACEMENT (CONT.) Turn off the main power switch and unplug the power cord. Wait at least 30 minutes to allow the lamp to cool down before replacing it. 120V FRONT COVER PUSH POWER THE LAMP IS VERY HOT AND MAY CAUSE FIRE OR SEVERE BURNS.
  • Page 31 LC37/LC37F II. FEATURES AND FUNCTIONS 3.0 LAMP REPLACEMENT (CONT.) Remove the screw securing the lamp cover with a Phillips head screw driver as shown. Remove the lamp cover. SCREW LAMP COVER PHILLIP HEAD SCREW DRIVER THE LAMP IS VERY HOT AND MAY CAUSE FIRE OR SEVERE BURNS. WAIT AT LEAST 30~45 NOTE: MINUTES TO ALLOW THE LAMP TO COOL BEFORE PROCEEDING WITH LAMP REMOVAL.
  • Page 32 LC37/LC37F II. FEATURES AND FUNCTIONS 3.0 LAMP REPLACEMENT (CONT.) Without installing the lamp cover, the power will be off and the Lamp Indicator will flash (see page 23). Be sure to install the lamp cover by re-engaging the two clips and tighten the screws before turning the power on, otherwise it may cause unusual colors. SCREW LAMP COVER PHILLIP HEAD...
  • Page 33: On-Screen-Display Features

    LC37 II. FEATURES AND FUNCTIONS 4.0 ON-SCREEN-DISPLAY FEATURES Picture Mode Select between the two picture modes; Day and Night. Contrast Adjust contrast. Brightness Adjust brightness. Color Adjust color. Tint Adjust tint. Sharpness Adjust sharpness. Video Color Temperature Set this to High for less intense color with more blue, set to Medium for natural color, set to Standard for standard colors or Black/White for more reddish color.
  • Page 34: Video Setting

    LC37/LC37F II. FEATURES AND FUNCTIONS 4.1 VIDEO SETTING Select Video to adjust picture settings and improve picture quality. You can customize each of the Video Inputs to Video your preference to increase viewing performance and pleasure depending upon the video program being viewed. If RESET is selected, only the selected mode will reset to initial conditions.
  • Page 35 LC37/LC37F II. FEATURES AND FUNCTIONS 4.1 VIDEO SETTING Video ANT A/B Video Picture Mode Night Audio Contrast 100% Aspect Brightness Chan. Manager THUMB Color STICK Locks Tint Setup SELECT Sharpness Move High Color Temperature High Black Enhancement Dynamic Contrast Mode Reset Video Settings Move Select...
  • Page 36 LC37/LC37F II. FEATURES AND FUNCTIONS 4.1 VIDEO SETTING This function allows you to Reset the Video Menu Settings of the present input and return it to the Day or Night Reset Video conditions depending on the selected Video mode. Settings Video ANT A/B Video...
  • Page 37 This involves a process known as 3:2 pulldown. When Auto Movie Mode is turned On from the Video menu, your Hitachi LCD TV will activate the circuitry for this special feature to improve video performance when watching film based sources.
  • Page 38: Channel Manager

    LC37/LC37F II. FEATURES AND FUNCTIONS 4.2 CHANNEL MANAGER Chan. Manager Select Antenna if you are using an indoor or outdoor antenna. Select Cable if you have cable TV. Chan. Manager Chan. Manager Ant. A Ant. A Ant. B Channel Source THUMB Move Select...
  • Page 39 LC37/LC37F II. FEATURES AND FUNCTIONS 4.2 CHANNEL MANAGER (CONT.) This feature will automatically store active TV channels in Auto Channel Scan. This will allow you to skip Auto Channel Scan unused channels when using CHANNEL UP ( ) or DOWN ( ). Chan.
  • Page 40: Connecting Av Network

    Your Hitachi LCD TV is equipped with an AV Network feature. This feature helps to control your external Audio/Video equipment (VCR, Set Top Box, DVD, etc.). Once this is setup, it allows your IR Mouse connector to control your equipment using your Hitachi TV Remote Control.
  • Page 41: Av Network Setup Wizard

    5.1 AV NETWORK SETUP WIZARD Follow the steps below to setup your AV network (See page 42 for AV Network Codes). There are six steps in the setup procedure (DVD setup example below). HITACHI AV NET SET UP THUMB POWER...
  • Page 42: Av Network Codes

    Video Concepts ......0045 Hitachi ....... . . 0819 Proscan .
  • Page 43: How To Use Av Network

    LC37/LC37F II. FEATURES AND FUNCTIONS 5.1 HOW TO USE THE AV NETWORK A/V NET button Press this button to access the Audio/Video network (AV Net) menu. The AV Net allows the user to control external components with the LCD Rear PTV’s remote control. When you press the AV NET button, the following window will pop up within the Display Monitor screen.
  • Page 44 II. FEATURES AND FUNCTIONS LC37/LC37F 5.1 HOW TO USE THE AV NETWORK Photo MC The Photo MC feature is useful for viewing digital still pictures from your digital camera using a memory card and displaying them on the TV screen. Insert Photo MC (memory card) to be viewed to a PC Card adapter. Insert the loaded PC Card adapter to the Photo MC slot of the control panel in the front of the TV.
  • Page 45 II. FEATURES AND FUNCTIONS LC37/LC37F 5.1 HOW TO USE THE AV NETWORK SLIDESHOW Select this menu item to start a slideshow of the Photos in the memory card. Time interval selections can be set from 5, 10 and 30 seconds. THUMB 1/10 Jump...
  • Page 46 Custom INFO GUIDE LAST CH Move Device Setting INFO THUMB STICK HITACHI AV NET WIZARD (Learning) Set Top Box THUMB STICK Use this wizard to manually learn Custom SETUP or modify your AV NET soft keys. See Page 47 BACK...
  • Page 47 TV remote control. Highlight CUSTOM, and THUMBSTICK to enter AV NET WIZARD. Select MODIFY HITACHI AV NET WIZARD (Learning) Use this wizard to manually learn to make changes on equipment already stored in the CUSTOM memory. or modify your AV NET soft keys.
  • Page 48: How To Use The Aspect Mode

    II. FEATURES AND FUNCTIONS 5.1 HOW TO USE THE AV NETWORK ASPECT button Press this button to quickly change the picture format ASPECT ratio. Depending on the input signal, the picture format ratio allows you to adjust the images through the following options. 4:3 Standard Use this aspect mode to display conventional (4:3) images.
  • Page 49: Assembled P.w.b. Adjustment

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Memory Initialization Adjustment Procedure Enter I C mode from the front panel by pressing and holding the INPUT and the POWER button for two seconds, then release. Note: When entering the I C menu mode, make sure to wait about two minutes after power off.
  • Page 50: Factory Reset

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT 2. FACTORY PRESET (1) (1) Cursor right ( ) to select factory reset (Fact Reset) of the OSD and check that the set returns to delivery settings (CH 03) (see page 88-91). (2) Do not unplug the set until this operation is completed and do not perform any key operation either, after this operation each setting is reset delivery settings automatically.
  • Page 51: Raster Position Adjustment

    VALUE TRAPEZOIDAL DISTORTION VERTICAL LINE TILT VERTICAL LINE TRAPEZOIDAL DISTORTION HORIZONTAL LINE TILT HORIZONTAL LINE EDGE LINE POSITION VERTICAL HORIZONTAL Parallel Parallel CONDITION (1)RECEIVE THE HITACHI CIRCLE PATTERN SIGNAL. (2)BRIGHTNESS/CONTRAST------STANDARD CONDITION CONTRAST: MAX OTHER PARAMETERS: CENTER POSITION BACK TO ADJUSTMENTS...
  • Page 52: Adjustment Mechanism

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT 3.1.2 ADJUSTMENT MECHANISM Raster position should be adjusted by using 6 axis adjustment table. A-2L A-1L Base plate (1) Base plate (3) A-1R A-2R Base plate (2) A-1; FIXING SCREW FOR TRAPEZOID DISTORTION A-2; ADJUSTMENT SCREW FOR TRAPEZOID DISTORTION B ;...
  • Page 53: Flow Chart For Adjustment

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT 3.1.3 FLOW CHART FOR ADJUSTMENT (1) CONFIRM TRAPEZOID. (2) IF OUT OF SPEC, ADJUST TRAPEZOID REFER TO 3.1.4 (1) TRAPEZOID DISTORTION. (3) CONFIRM TILT. (4) IF OUT OF SPEC, ADJUST TILT REFER TO 3.1.4 (2) TILT. (5) CONFIRM VERTICAL POSITION.
  • Page 54: Adjustment Method

    LC37/LC37F 3.2 Electrical picture position adjustment Note: If horizontal or vertical position can not be adjusted within the specification by mechanical raster position alignment, adjust position by I C menu. (1) Enter ‘H POSITION’ service menu and adjust horizontal picture position by using the cursor on the remote contorl. (2) Enter ‘V POSITION’...
  • Page 55: Display Area Specification

    H size marker 50V500:0.5~-1.0(-16mm) 60V500A:0.5~-1.0(-20mm) H size marker 50V500:0.5~-1.0(-16mm) 60V500A:0.5~-1.0(-20mm)
  • Page 56: Amplitude Adjustment

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT 5.0 Amplitude Adjustment 5.1 RGB Amplitude Adjustment Preparation for adjustment (1) Recall user menu and select ‘Video’ _ ‘Picture Mode’ _ ‘Day’ _ ‘Reset’. (2) Input 525p(480p) of RGB amplitude adj. signal into INPUT1 (Component) input. Adjustment procedure (1) Receive 525p(480p) signal (ASPECT 16:9 Standard).
  • Page 57: Ghost Adjustment

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT 7.0 GHOST ADJUSTMENT ADJUST ITEMS ADJ. PROCEDURE ADJ.SIGNAL Internal signal from IC(Black window pattern with 50% raster signal) GHOST ADJUST MODE LCD ADJUST GHOST ADJUSTMENT First , reduce the “SHP” pressing left button of the remote until ghost appears at the left hand side of the window pattern.
  • Page 58: Gamma) White Balance Adjustment

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT 10.0 GAMMA Correction (White Balance) GAMMA data (white balance) should not be adjusted. This data are adjusted by the factory and MEMORY INITialize cannot erase these data. If and only if the customer request to change the GAMMA correction, follow the instruction below.
  • Page 59: Color (White) Uniformity Adjustment

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT III. ASSEMBLED P.W.B. ADJUSTMENT 11.0 Color Uniformity (White Uniformity) COLOR UNIFORMITY data should not be adjusted. This data are adjusted by the factory and MEMORY INITialize cannot erase these data. If and only if the customer request to change the color uniformity, follow the instruction below.
  • Page 60: Door Protection Operation Check

    LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT 12.0 DOOR PROTECTION OPERATION CHECK Adjustment procedure (1) Remove Lamp cover and turn the set on. (2) Check that the lamp dose not light, and “Lamp indicator" is flash red. (3) Turn the set off and attach Lamp cover again 13.0 LAMP HOLDER PROTECTION OPERATION CHECK Adjustment procedure (1)Remove Lamp holder and turn the set on.( attach Lamp cover)
  • Page 61 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List 1st Page Adjustment Adjustment Item Address Adjustment Initial Data Adjustment Mode OSD Range (HEX) Value (HEX) (HEX) SUB BRIGHT Brightness 00.~FF D15~D8 White Balance Mode (Controlled by sub mi-com) R DRIVE (HIGH) R~SUB~GAIN (CXD3536) High...
  • Page 62 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List 1st Page Adjustment Adjustment Item Address Adjustment Initial Data Adjustment Mode OSD Range (HEX) Value (HEX) (HEX) (Controlled by sub mi-com) HP (CXD3536) 000~7FF 027 * D18~D8 VP (CXD3536) 00~FF 05 * D7~D0...
  • Page 63 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List CCD/V CHIP/VIDEO ID Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) V CHIP/ CCD SAMPRING V Chip Adjust 00~FF Refer to “V Chip Spec. POLLING 00~FF START...
  • Page 64 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List Device Page:LCD DRIVE Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) LCD DRIVE (Sub mi-com) SIG-C-R SIG-C-R (CXA7005-Red/01h/D5-D0) 00~3F 1Dh * 00:SIG-C voltage 6.5V~3Fh: 8.7V D21~D16 SIG-C-G SIG-C-R (CXA7005-Green/01h/D5-D0)
  • Page 65 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List Device Page: UPD 64084 Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) UPD64084 (B9H) Read Mode SYNCDET Sync Detection 00~01 0: Sync, 1: No Sync F-STD Frame Sync Nonstandard Detection 00~01...
  • Page 66 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List Device Page: TA1383 Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) TA1383-Main/Sub (D8H/DAH) Write Mode CONTM1 Contrast Control Main TA1383 ANT A, B 00~1F 00: MIN (-3dB) D7~D3...
  • Page 67 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List Device Page: NJWxxxx Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) NJW1160/61/xx/xx 82H BBE-LO BBE Low Frequency Effect Level 00~0F 0dB~15dB D7~D4 BBE-HI BBE High Frequency Effect Level 00~0F...
  • Page 68 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List Device Page: FLEX Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) CNR1 Color Noise Reduction 00~07 Input Level D15~D13 CNR2 NTSC CNR4 480i CNR5 480p...
  • Page 69 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List LCD ADJUST Mode Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) GHOST (Sub mi-com) SHP (CXD3536/1015h/D5-D0) 00~3F 2ch * 00~3F D21-D16 GHOST-R R-GC-ATT[7:0] (CXD3536) 00~FF 00 *...
  • Page 70 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List LCD ADJUST Mode Adjustment Adjustment Item Address Adjustment Initial Adjustment Mode OSD Range Data Value (HEX) (HEX) (HEX) C.UNIF (MIN) (Sub mi-com) POINT No C.UNIF No. 01~19 D05-D00 R-UNIF(CXD3536/4000h~) 00~FF D15-D08 G- UNIF (CXD3536/5000h~)
  • Page 71 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 000H FLAMINTV Auto Signal Level Adjustment Minimum Value TV 0~255 0~FFH 001H FLAMAXTV Auto Signal Level Adjustment Maximum 0~255 0~FFH Value 002H ASBY Y Brightness Auto Adjustment Value...
  • Page 72 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 02DH DSHPHS0 Horizontal Sync Horizontal Phase 480i 0~255 0~FFH 02EH DSHPHS1 (DVI Sub) 480p 0~255 0~FFH 02FH DSHPHS2 1080i 0~255 0~FFH 030H DSHPHS3 720p...
  • Page 73 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 05AH VECOR0~P0 Not Use ANT/Multi 0~15 0~FH 05BH VECOR1~P0 Video 0~15 0~FH 05CH VECOR2~P0 480i 0~15 0~FH 05DH VECOR3~P0 480p 0~15 0~FH 05EH VECOR4~P0...
  • Page 74 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial ANT/Video/480i- ANT/Video/480i 135 087H MYNRG0 Main Y Frame Noise Reduction Input 0~7H ANT/Video/480i- 480p/1080i/720p Gain (SPLIT) 480p/1080i/720p- ANT/Video/480i 136 088H MYNRG1 0~7H 480p/1080i/720p- 480p/1080i/720p...
  • Page 75 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 179 0B3H YHEG0~P0 Not Use (for PDP) ANT/Video/480i/Multi 0~15 0~FH 180 0B4H YHEG1~P0 480p 0~15 0~FH 181 0B5H YHEG2~P0 1080i/720p 0~15 0~FH 182 0B6H YHDSBG0~P0...
  • Page 76 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 228 0E4H YHDSBC0~P1 Not Use (for PDP) ANT/Video/480i/Multi 0~7H 229 0E5H YHDSBC1~P1 480p/1080i/720p 0~7H 230 0E6H YHECLP0~P1 Not Use (for PDP) ANT/Video/480i/Multi 0~1H 231 0E7H...
  • Page 77 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 279 117H YCOR0~P2 Y/G Coring Amplitude ANT/Multi 0~7H 280 118H YCOR1~P2 Video 0~7H 281 119H YCOR2~P2 480i 0~7H 282 11AH YCOR3~P2 480p 0~7H 283 11BH...
  • Page 78 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 321 141H TC23CSL 2-3 Pull down C Threshold ANT/Video/480i/1080i 0~255 0~FFH 322 142H TC23MSL0 2-3 Pull down Moving Area Threshold ANT/Video/480i 0~255 0~FFH 323 143H...
  • Page 79 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 363 16BH CME1GIN C Motion Detection Edge 1 Gain ANT/Video/480i/1080i 0~7H Selection 364 16CH CME1COR C Motion Detection Edge 1 Coring ANT/Video/480i/1080i 0~31 0~1FH...
  • Page 80 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 403 193H HUCENMC1 CbCr Hue Center 1 (MSB), (LSB) (CbCr) 0~3H 404 194H HUCENLC1 0~1023 0~3FFH 142H 405 195H HUWC1 CbCr Hue Width 1 (CbCr) 0~255 0~FFH...
  • Page 81 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 443 1BBH SACENMC1 CbCr Saturation Hue Center 1 (CbCr) 0~3H (MSB), (LSB) 444 1BCH SACENLC1 0~3FFH 143H 0~1023 445 1BDH SAWC1 CbCr Saturation Hue Width 1 (CbCr) 0~255...
  • Page 82 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 483 1E3H HUCENMP1 PbPr Hue Center 1 (PbPr) 0~3H (MSB), (LSB) 484 1E4H HUCENLP1 0~3FFH 366H 0~1023 485 1E5H HUWP1 PbPr Hue Width 1 (PbPr) 0~255 0~FFH...
  • Page 83 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 518 206H SACENMP0 PbPr Saturation Hue Center 0 (PbPr) 0~3H (MSB), (LSB) 519 207H SACENLP0 0~3FFH 0~1023 520 208H SAWP0 PbPr Saturation Hue Width 0 (PbPr) 0~255 0~FFH...
  • Page 84 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 559 22FH FRMLEV0 Frame Brightness Single 0~255 0~FFH 560 230H FRMLEV1 Multi 0~255 0~FFH 561 231H FRMLEV2 Not Use 0~255 0~FFH 562 232H FHMINMSB Not Use...
  • Page 85 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 603 25BH BSSP Black Changing Speed 0~63 0~4FH 0: fast, 63:late 604 25CH BSSTEP Black Stretch Adjustment Step 0~3H 0:direct 1~3:1~3step 605 25DH BSSTART Black Stretch Start Level...
  • Page 86 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 644 284H DGCMSB Dynamic Contrast Gain Control Offset 0~255 0~FFH (MSB) 645 285H DGCLSB Dynamic Contrast Gain Control Offset 0~255 0~FFH (LSB) 646 286H DCCOLST...
  • Page 87 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 1. I C Parameter List No. EEP LABEL Adjustment Item Mode Range Initial 677 2A5H GM18 Gamma 8 Adjustment (Normal) 0~128 0~FFH 678 2A6H GM17 Gamma 7 Adjustment (Normal) 0~255 0~FFH 679 2A7H GM16 Gamma 6 Adjustment (Normal) 0~255 0~FFH...
  • Page 88 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 2. SETTING FOR DELIVERY (FACTORY RESET) Function Initial Data/Condition Condition NTSC Channel (Main, Sub) 03Channel ATSC Channel None (3-1ch) On DTV Input Mode Ant A Sleep Timer Not Registered Favorite Channels Not Registered Multi Window Mode PIP/POP/SPLIT Main;...
  • Page 89 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 2. SETTING FOR DELIVERY (FACTORY RESET) Function Initial Data/Condition Condition Audio Treble Bass Balance Sound Enhancement (SRS, BBE, SRS&BBE, Off) Audio Source Stereo (Stereo/Mono/SAP) Internal Speakers (On, Off Only) Internal Speakers (On/Off/TV AS Center) Auto Noise Cancel Perfect Volume Loudness...
  • Page 90 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 2. SETTING FOR DELIVERY (FACTORY RESET) Function Initial Data/Condition Condition Locks Change Access Code “0000”,”7777” Engage Lock Set Channel Lock Not Registered Set Input Lock Not Registered Set Front Panel Lock Not Registered TV Time Lock Start/Stop Time Not Registered Repeat...
  • Page 91 LC37/LC37F III. ASSEMBLED P.W.B. ADJUSTMENT Table 2. SETTING FOR DELIVERY (FACTORY RESET) Function Initial Data/Condition Condition Setup About Your TV - (None) Set Timer Recording Not Registered On DTV (Record1/2/3/4) Set Monitor Out Monitor On DTV (Monitor/TV Out) Upgrades - (None) On DTV Set Stand-by Mode On DTV...
  • Page 92: Power P.w.b

    LC37/LC37F IV. POWER P.W.B. Back Cover Side PPF2 PPF3 D928 +10V (Green) D911 Main (Red) I903 D932 +5 5V(1) (Green) E905 +16 5V E904 +10V I901 E903 D931 +25V +15 5V (Green) F904 FUSE D930 E901 +5 5V(2) Audio (Green) D933 U901 Audio...
  • Page 93: Power Supply

    T h e r e s h o u l d n o t b e a n y i m p e r f e c t r a s t e r . Measuring conditions Supply AC1088V from AC stabilizing power supply Receive HITACHI circle pattern signal. Contrast and Brightness: Factory Reset condition BACK TO ADJUSTMENTS...
  • Page 94: Portection Circuit Blcok Diagram

    1.2 Protection Circuit Block Daigram (Power Supply) LIVE COLD AC Plug D 913 : SBY + 5 V Power uCOM: Module AC Input SBY+5V U901 Fuse D933: Audio Rectifier D937:<5V Audio: F901: 6A Protector Rectifier D902 +29.0V E901:10K +29.0V:D922 Line Filter Varistor D938 : <5V Rectifier...
  • Page 95: Trouble Shooting Flowchart

    LC37/LC37F BACK TO ADJUSTMENTS...
  • Page 96: Dc Voltage

    LC37/LC37F VI. DC VOLTAGES Signal 1 Symbol Pin No. V(DC) Pin No. V(DC) Pin No. V(DC) Pin No. V(DC) 0.18 1.63 3.20 2.98 1.32 0.03 3.09 2.20 3.26 4.61 3.08 3.28 3.26 4.68 2.80 3.30 0.00 4.59 3.08 0.00 3.26 4.51 0.03 3.06...
  • Page 97: Dc Voltage

    LC37/LC37F VI. DC VOLTAGES Signal 1 Symbol Pin No. Pin No. Symbol Pin No. V(DC) V(DC) V(DC) 2.10 0.00 5.49 2.43 0.00 2.10 I009 4.64 2.12 4.51 1.79 0.01 0.00 U301 4.98 0.05 Symbol Pin No. Pin No. V(DC) V(DC) 0.00 0.05 32.59...
  • Page 98 LC37/LC37F VI. DC VOLTAGES Signal 2 Symbol Pin No. Pin No. Symbol Pin No. V(DC) V(DC) V(DC) I402 I403 Symbol Pin No. Symbol Pin No. V(DC) V(DC) 10.0 I404 I405 10.0 Symbol Pin No. Pin No. V(DC) V(DC) I453 Symbol Pin No.
  • Page 99 LC37/LC37F VI. DC VOLTAGES Signal 3 Symbol Pin No. Symbol Pin No. Pin No. V(DC) V(DC) V(DC) 10.0 I504 10.0 Symbol Pin No. Pin No. V(DC) V(DC) IA01 IA02 Symbol Pin No. Pin No. V(DC) V(DC) IC01 Symbol Pin No. Pin No.
  • Page 100 LC37/LC37F VI. DC VOLTAGES Signal 3 Q524 -0.2 QA56 QE20 Q527 10.0 QA57 QE21 Q528 QA58 QE22 Q529 QE01 QE24 Q561 QE02 QE25 Q562 QE03 QE26 Q563 QE04 QE27 Q564 QE05 QE28 QA01 QE06 QE29 QA02 QE07 QE30 QA03 QE08 QE31 QA04 QE09...
  • Page 101 LC37/LC37F VI. DC VOLTAGES Terminal 1 Symbol Pin No. Pin No. Symbol Pin No. Pin No. V(DC) V(DC) V(DC) V(DC) IV01 IV03 Symbol Pin No. Pin No. Symbol Pin No. Pin No. V(DC) V(DC) V(DC) V(DC) IV02 IV04 Symbol Pin No. Pin No.
  • Page 102 LC37/LC37F VI. DC VOLTAGES Terminal 1 QV05 QV15 QV29 QV06 QV16 QV30 QV07 QV17 QV31 QV08 QV18 QV32 QV09 QV19 QV33 QV10 QV20 QV34 QV11 QV21 QV35 QV12 QV22 QV36 QV14 QV23 QV37 QV24 QV38 QV25 QV39 QV26 QV41 QXA0 QXA1...
  • Page 103 LC37/LC37F VI. DC VOLTAGES Terminal 2 Symbol Pin No. Pin No. Pin No. Pin No. Pin No. V(DC) V(DC) V(DC) V(DC) V(DC) IY01 Symbol Pin No. V(DC) IY02 Symbol Pin No. Pin No. Symbol Pin No. Pin No. V(DC) V(DC) V(DC) V(DC) IY03...
  • Page 104 LC37/LC37F VI. DC VOLTAGES Terminal 2 QY01 QY19 QY03 QY20 QY04 QY21 QY05 QY22 QY06 QY23 QY09 QY24 QY10 QY26 QY11 QY31 QY12 QY32 QY13 QY14 QY15 QY16 QY17 QY18...
  • Page 105 LC37/LC37F VI. DC VOLTAGES Power Supply Symbol Pin No. Symbol Pin No. V(DC) V(DC) 99.2 I902 102.4 I901 296.9 19.0 Symbol Pin No. V(DC) Symbol Pin No. V(DC) 14.1 I907 11.8 I903 13.1 16.6 19.0 Symbol Pin No. V(DC) Symbol Pin No.
  • Page 106 LC37/LC37F VI. DC VOLTAGES Control Symbol Pin No. 2.91 V(DC) 1.60 QM03 8.86 HM01 4.98 2.26 0.01 2.99 QM04 8.86 Symbol Pin No. 2.35 V(DC) 0.01 0.68 4.96 QM06 0.08 -0.30 0.01 3.25 0.08 QM07 4.98 Symbol Pin No. V(DC) 0.01 2.47 0.02...
  • Page 107 LC37/LC37F VI. DC VOLTAGES Audio Symbol Pin No. Pin No. Symbol Pin No. Pin No. V(DC) V(DC) V(DC) V(DC) 1.55 14.28 1.55 14.86 0.01 5.04 0.01 5.04 IAA1 0.01 31.56 IAA2 0.01 31.55 0.01 0.00 0.01 0.00 1.54 4.18 1.54 4.24 10.64 14.18...
  • Page 108: Waveforms

    LC37/LC37F VII. WAVEFORMS AT EACH SECTION Numbers inside circle correspond to locations shown in the circuit diagram. U302 P18 U302 P05 U302 P04 U301 P19 U301 P18 U301 P05 BACK TO ADJUSTMENTS...
  • Page 109 LC37/LC37F VII. WAVEFORMS AT EACH SECTION Numbers inside circle correspond to locations shown in the circuit diagram. U301 P04 I001 P23 I001 P28 I001 P29 I001 P30 PST1 P50...
  • Page 110 LC37/LC37F VII. WAVEFORMS AT EACH SECTION Numbers inside circle correspond to locations shown in the circuit diagram. PST1 P45 PST1 P41 PST1 P39 PST1 P19 PST1 P18 PST2 P13...
  • Page 111 LC37/LC37F VII. WAVEFORMS AT EACH SECTION Numbers inside circle correspond to locations shown in the circuit diagram. PST2 P12 IE01 P02 IV11 P15 IV11 P14 IY04 P02 IY04 P03...
  • Page 112 LC37/LC37F VII. WAVEFORMS AT EACH SECTION Numbers inside circle correspond to locations shown in the circuit diagram. IY04 P05 IY04 P13 IY04 P14 IY04 P15 IY04 P15 IY04 P24...
  • Page 113 LC37/LC37F VII. WAVEFORMS AT EACH SECTION Numbers inside circle correspond to locations shown in the circuit diagram. IY03 P13 IY03 P14 IY03 P02 IY03 P24...
  • Page 114: Replacement Parts List

    LC37/LC37F VIII. REPLACEMENT PARTS LIST PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing.
  • Page 115 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 116 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 117 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 118 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 119 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 120 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 121 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 122 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 123 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 124 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 125 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 126 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 127 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 128 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 129 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 130 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 131 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 132 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 133 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 134 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 135 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 136 LC37/LC37F PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART PART...
  • Page 137 PLUG 15P LOCK 2.5MM JST #012 QD36002 60V500 LOW CABINET ASY PPS2 ED00388 PLUG 9P LOCK 2.5MM JST #021 KS06401 50V500 MIRROR COVER ASY PPS3 ED00382R 3P XA PLUG TAPING #022 KS06402 60V500 MIRROR COVE.ASY 2959054 PINPOST 5P PH #031...
  • Page 139: Exploded View

    LC37/LC37F EXPLODED VIEW 50V500 Drawing 2 Some parts may appear different than those shown in the exploded view. When ordering, refer to the replacement parts NOTES: list for the correct part number. The circled numbers correspond to the parts list shown on page 142.
  • Page 140 LC37/LC37F EXPLODED VIEW 50V500 Drawing 3 Some parts may appear different than those shown in the exploded view. When ordering, refer to the replacement parts NOTES: list for the correct part number. The circled numbers correspond to the parts list shown on page 142.
  • Page 141 LC37/LC37F EXPLODED VIEW 50V500 Drawing 4 Some parts may appear different than those shown in the exploded view. When ordering, refer to the replacement parts NOTES: list for the correct part number. The circled numbers correspond to the parts list shown on page 142.
  • Page 142 V500 MIRR SIDE MTL L NA69011 V500 MIRR SIDE MTL R MN06151 V500 MIRR LOW SPACER KS06581 1ST MIRROR 50V500 NJ07831 MIRROR FIX PART UP B 50V500 NJ07811 MIRROR FIX PART LOW 50V500 NA64502 MIRR FIX LO MTL 50V MN05841 V500 BARRIER L MN05831...
  • Page 144 LC37/LC37F EXPLODED VIEW 60V500A Drawing 2 Some parts may appear different than those shown in the exploded view. When ordering, refer to the replacement parts NOTES: list for the correct part number. The circled numbers correspond to the parts list shown on page 147.
  • Page 145 LC37/LC37F EXPLODED VIEW 60V500A Drawing 3 Some parts may appear different than those shown in the exploded view. When ordering, refer to the replacement parts NOTES: list for the correct part number. The circled numbers correspond to the parts list shown on page 147.
  • Page 146 LC37/LC37F EXPLODED VIEW 60V500A Drawing 1 Some parts may appear different than those shown in the exploded view. When ordering, refer to the replacement parts NOTES: list for the correct part number. The circled numbers correspond to the parts list shown on page 147.
  • Page 147 MIRROR FIX PART L 50V500 NJ07821 MIRROR FIX PART R 50V500 MN06152 60V500 MIRR LOW SPACER KS06582 1ST MIRROR 60V500 NJ07831 MIRROR FIX PART UP B 50V500 NJ07811 MIRROR FIX PART LOW 50V500 NA67801 BACK COVER BOTTOM METAL MN05841 V500 BARRIER L MN05831...
  • Page 148: Printed Circuit Boards

    LC3X PRINTED CIRCUIT BOARD Control CS BACK TO ADJUSTMENTS...
  • Page 149 LC3X PRINTED CIRCUIT BOARD Control SS...
  • Page 150 LC3X PRINTED CIRCUIT BOARD Drive CS...
  • Page 151 LC3X PRINTED CIRCUIT BOARD Drive SS...
  • Page 152 LC3X PRINTED CIRCUIT BOARD DVI CS...
  • Page 153 LC3X PRINTED CIRCUIT BOARD DVI SS...
  • Page 154 LC3X PRINTED CIRCUIT BOARD Power CS...
  • Page 155 LC3X PRINTED CIRCUIT BOARD Power SS...
  • Page 156 LC3X PRINTED CIRCUIT BOARD Signal CS...
  • Page 157 LC3X PRINTED CIRCUIT BOARD Signal SS...
  • Page 158 LC3X PRINTED CIRCUIT BOARD Terminal CS...
  • Page 159 LC3X PRINTED CIRCUIT BOARD Terminal SS...
  • Page 160: Connection Diagram

    LC3X CONNCETION DIAGRAM...
  • Page 161: Block Diagram

    LC3X BLOCK DIAGRAM...
  • Page 162: Basic Circuit Diagram

    LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Signal 1 of 3 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 163 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Signal 2 of 3 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 164 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Signal 3 of 3 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 165 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Terminal 1 of 2 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 166 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Terminal 2 of 2 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 167 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Control safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 168 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Audio/PJIG/Door safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 169 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Drive 1 of 4 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 170 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Drive 2 of 4 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 171 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Drive 3 of 4 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 172 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Drive 4 of 4 safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 173 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 174 LC3X BASIC CIRCUIT DIAGRAM PRODUCT SAFETY NOTE: Components marked with a and shaded have special characteristics important to Power Supply safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. All DC voltage to be measured with a tester (100k /V).
  • Page 175: Final Wiring

    LC3X FINAL WIRING 1 of 4 BACK TO ADJUSTMENTS...
  • Page 176 LC3X FINAL WIRING 2 of 4...
  • Page 177 LC3X FINAL WIRING 3 of 4...
  • Page 178 LC3X FINAL WIRING 4 of 4...
  • Page 179: Major Ics And Units

    LC37/LC37F 2.4 ICs and UNITs Symb DESCRIPTION FUNCITION 1 I601 CK38991U M30624FGPFP SUB-MICOM DRIVE 2 I602 CK35894R CAT24WC32J1 DRIVE 3 I603 CK37051R BD4729G DRIVE 4 I604 CK01872R BU4053BCFV-E2 DRIVE 5 I605 CA01301R TRS.CHIP NDC7002N DRIVE 6 I701 CK37121R THC63LVDF84B-R LVDS RECEIVER DRIVE 7 I704 CK37193R SI-3033LSA-TL...
  • Page 180 LC37/LC37F Symb DESCRIPTION FUNCITION 46 IC01 CK01872R BU4053BCFV-E2 SIGNAL 47 IC02 CK31041R TA1287F SIGNAL 48 IE01 CK31041R TA1287F SIGNAL 49 IE02 CK38102R NJM2584AM(TE1) VIDEO SWITCH SIGNAL 50 U301 HC00512 F/E ENGE6106DR MAIN TUNER SIGNAL 51 U302 HC00464 FE-ENG36626G SUB TUNER SIGNAL 52 IV01 CK30941U CXA2069Q...
  • Page 181 LCD Rear Projection TV Major Assembly Parts List - By Model 50V500 HA01231 Lamp Power Unit UX21511 Lamp Assy JT24141 Signal PWB Assy, (includes Terminal and DVI PWB) JT24161 Power PWB JT24171 Control PWB UX22201 Optical Engine Assy, (includes Drive and FC4 PWB)
  • Page 182: Optical Engine Removal Procedure

    Hitachi LCD Rear Projection TV Optical Engine Removal Procedure...
  • Page 183 ENGINE REMOVAL PROCEDURE (CONTINUED) Pop off front grill. Remove 4 screws holding front plastic piece w/ power button.
  • Page 184 ENGINE REMOVAL PROCEDURE (CONTINUED) (Left side close up) (Right side close up)
  • Page 185 ENGINE REMOVAL PROCEDURE (CONTINUED) Remove 4 screws holding top cabinet front. (Left side close up)
  • Page 186 ENGINE REMOVAL PROCEDURE (CONTINUED) (Right side close up) Remove screws holding lower rear cabinet.
  • Page 187 ENGINE REMOVAL PROCEDURE (CONTINUED) Remove screws holding upper rear cabinet. Remove 2 screws holding right subwoofer.
  • Page 188 ENGINE REMOVAL PROCEDURE (CONTINUED) Pull out subwoofer as shown, to access the upper cabinet wires. Disconnect all the wires...
  • Page 189 ENGINE REMOVAL PROCEDURE (CONTINUED) Now lift the top straight up. (2 person lift!) Remove this bracket...
  • Page 190 ENGINE REMOVAL PROCEDURE (CONTINUED) Bracket removed Next, remove the Ballast Assy...
  • Page 191 ENGINE REMOVAL PROCEDURE (CONTINUED) Remove Lamp Switch PWB Remove Lamp Power Connector retaining bracket, then Lamp Power Connector...
  • Page 192 ENGINE REMOVAL PROCEDURE (CONTINUED) Remove Fan Exhaust Housing (back screw is hidden in this view) Another view of Fan Exhaust housing, showing back screw...
  • Page 193 ENGINE REMOVAL PROCEDURE (CONTINUED) Remove the 5 screws holding down the Engine Assy. Use a stubby #2 Philips head as needed...
  • Page 194 ENGINE REMOVAL PROCEDURE (CONTINUED) Remove upper bracket, so Engine assy can be pulled out the back. Install new Engine Assy, reassemble in reverse order of disassembly...

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60v500a