Sanyo CLT-2054 Schematic

Specifications

Power Rating . . . . . . . . . . . . . . . . . . . . . . 19V, 3.1A

Antenna Input Impedance. . . . . . . . . . . . . . . . . 75Ω

UHF/VHF/CATV

Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),

14 - 69 (UHF),

01, 14-94, 95-125 (CATV)

Remote Ready . . . . . . . . . . 24 Key Remote Control

Sound Output . . . . . . . . . . . . . . . . . . . . . . 5.0 W/CH

Intermediate Frequency

Picture IF Carrier. . . . . . . . . . . . . . . . . . 45.75MHz

Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz

Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz

LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V201V1-T02

Cabinet Dimensions

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604mm

Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414mm

Depth including base. . . . . . . . . . . . . . . . 185mm

REFERENCE No. SM780097

CLT-2054,N2HE, PRODUCT CODE 111371104

Contents

Safety Instructions . . . . . . . . . . . . . . . . . . 2

Service Adjustments. . . . . . . . . . . . . 3 - 12

Power Failure Circuit . . . . . . . . . . . . . . . 13

Mechanical Disassemblies. . . . . . . 14 – 15

Chassis Electrical Parts List . . . . . . 16 - 28

Cabinet Parts List . . . . . . . . . . . . . . . . . . 29

Component and Test Point

Locations . . . . . . . . . . . . . . . . . . . 30 – 32

Block Diagrams . . . . . . . . . . . . . . . . 33 – 37

Trouble Shooting Flow Charts . . . . 38 – 40

Control Port Functions . . . . . . . . . . 41 – 42

Schematic Notes . . . . . . . . . . . . . . . . . . . 43

Pin Layouts. . . . . . . . . . . . . . . . . . . . . . . . 43

Capacitor and Resistor Codes . . . . . . . . 44

Schematic Diagrams . . . . . . . . . . . . 45 - 52

SERVICE MANUAL Remote Control Color

Television

CLT-2054 (U.S.A.)

(CANADA)

ORIGINAL VERSION

Chassis No. 2054-00

NOTE: Match the Chassis No. on

the unit’s back cover with the Chassis No. in the Service Manual.

If the Original Version Service Manual Chassis No. does not match the unit’s, additional Service

Literature is required. You must refer to “Notices” to the Original Service Manual prior to servicing the unit.

FILE NO.

— 2 —

SAFETY PRECAUTIONS

WARNING: The chassis of this receiver has a floating ground with the potential of one half the AC line voltage in respect to earth ground. Service should not be attempted by anyone not familiar with the precautions necessary when working on this type of equipment.

The following precautions must be observed:

1. An isolation transformer must be connected in the power line between the receiver and the AC line before any service is performed on the receiver.

2. Comply with all caution and safety-related notes provided on the side of the cabinet, inside the cabinet, on the chassis, and the picture tube.

3. When replacing a chassis in the cabinet, always be certain that all the protective devices are installed properly, such as control knobs, adjustment covers, shields and barriers.

DO NOT OPERATE THIS TELEVISION RECEIVER WITHOUT THE PROTECTIVE SHIELD IN POSITION AND PROPERLY SECURED.

4. Before replacing the back cover of the set, thoroughly inspect the inside of the cabinet to see that no stray parts or tools have been left inside. Before returning any television to the customer, the service technician must perform the following safety checks to be sure that the unit is completely safe to operate without danger of electrical shock.

ANTENNA COLD CHECK

Remove AC plug from the 120 VAC outlet and place a jumper across the two blades. Connect one lead of an ohmmeter to the jumpered AC plug, and touch the other lead to each exposed antenna terminal (UHF and VHF antenna terminals). The resistance must measure between 1M ohm and

5.2M ohm. Any resistance value below or above this range

indicates an abnormality which requires corrective action.

LEAKAGE CURRENT CHECK

Plug the AC line cord directly into a 120 VAC outlet. (Do not use an isolation transformer for this check.) Use an AC voltmeter, that has 5000 ohms per volt or more sensitivity. Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15 µF 150 VAC capacitor, between a known good earth ground (water pipe, conduit, etc.) and all exposed metal parts of the cabinet (antennas, handle bracket, metal cabinet, screw heads, metal overlays, control shafts, etc.). Measure the AC voltage across the 1500 ohm resistor. The AC voltage should not exceed 750 mV. A reading exceeding 750 mV indicates that a dangerous potential exists. The fault must be located and corrected. Repeat the above test with the receiver power plug reversed.

NEVER RETURN A RECEIVER TO THE CUSTOMER WITHOUT TAKING THE NECESSARY CORRECTIVE ACTION.

PRODUCT SAFETY NOTICE

When replacing components in a receiver, always keep in mind the necessary product safety precautions. Pay special attention to the replacement of components marked with a star (★) in the parts list and in the schematic diagrams. To ensure safe product operation, it is necessary to replace those components with the exact same PARTS.

SAFETY INSTRUCTIONS

READING SHOULD NOT EXCEED 750 mV.

AC VOLTMETER

(5000 ohms per volt or more sensitivity)

TELEVISION

RECEIVER

Good earth ground such as a water pipe, conduit, etc.

AC OUTLET

1500 ohm

10 watt

0.15 F 150V AC

To be touched to all of exposed metal parts.

Voltmeter Hook-up for Leakage Current Check.

— 3 —

SERVICE AD JUSTMENTS

GENERAL

This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments.

ON-SCREEN SERVICE MENU SYSTEM

1. Enter the Service Menu:

• While pressing the Volume (–) button on the televi-

sion, press the Number Key 1 on the remote control unit. The Service Menu will now appear.

2. Service Adjustments:

• Press the ▲or ▼ key to select the desired service

menu item you want to adjust. See page 4 for the On-screen Service Menu.

Note: Press the Mute key to skip up 16 items.

• Use the + or – key or number keys to adjust the data.

The + or – keys will increase or decrease the data sequentially. The number keys (0 ~ 7) toggle only their respective bits between 1 and 0 and are used to change the Sub-Address. For example to change bit 5 press the number 5 key. See below.

Note: Using the + or – is not recommended due to possi-

ble rapid changes.

Volume – : Enter Service Menu

Service Menu Display

Item No.

Hexadecimal

Data

Binary Data

Title

(b7) (b6) (b5) (b4) (b3) (b2) (b1) (b0)

0 1 0 1 0 1 1 0

BINARY DATA (8 bit)

3. Exit from the Service Menu:

• Press the MENU key to turn off the Service Menu

display.

Menu:

Exit Service Menu

▼ ▲:Select Item

Volume + / –:

Adjust Service Menu

Mute:

Skip Next 16 items

Numeric:

Enter Service Menu

0, 1, 2, 3, 4, 5, 6, 7:

Change Binary Data

1, 3, 4, 6, 7, 9:

Adjust White Balance

▲

POWER

▼

VOL

POWER

VOL VOL

MUTE

789

CAPTION

V-GUIDE

RESETINPUT

RECALL

DISPLAY

SLEEP

— 4 —

ON-SCREEN SERVICE MENU

No. Name Initial Data Note

000 480i Sub-Cont 61h 480i Sub-Contrast 001 480i Sub-Brightness 7Bh 480i Sub-Brightness 002 480i Sub-Color 5Bh 480i Sub-Color 003 480i Sub-Tint 00h 480i Sub-Tint 004 480i Sub-Sharp 10h 480i Sub-Sharpness 005 480p Sub-Cont 43h 480p Sub-Contrast 006 480p Sub-Brightness 7Fh 480p Sub-Brightness 007 480p Sub-Color 64h 480p Sub-Color 008 480p Sub-Tint 00h 480p Sub-Tint 009 480p Sub-Sharp 1Bh 480p Sub-Sharpness 00A AV Sub-Cont 5Fh Composite Sub-Contrast

00B AV Sub-Brightness 7Bh Composite Sub-Brightness 00C AV Sub-Color 64h Composite Sub-Color 00D AV Sub-Tint 00h Composite Sub-Tint 00E AV Sub-Sharp 11h Composite Sub-Sharpness 00F S Sub-Cont 5Fh S-Input Sub-Contrast

010 S Sub-Brightness 7Bh S-Input Sub-Brightness

011 S Sub-Color 64h S-Input Sub-Color

012 S Sub-Tint 00h S-Input Sub-Tint

013 S Sub-Sharp 11h S-Input Sub-Sharpness

014 RF Sub-Cont 58h TV Sub-Contrast

015 RF Sub-Brightness 7Bh TV Sub-Brightness

016 RF Sub-Color 64h TV Sub-Color

017 RF Sub-Tint 00h TV Sub-Tint

018 RF Sub-Sharp 11h TV Sub-Sharpness

019 Auto Contrast 2Fh * Depending on User’s Adjustment 01A Auto Brightness 20h * Depending on User’s Adjustment 01B Auto Color 20h * Depending on User’s Adjustment 01C Auto Tint 20h * Depending on User’s Adjustment 01D Auto Sharpness 0Fh * Depending on User’s Adjustment 01E Man. Contrast 2Fh * Depending on User’s Adjustment 01F Man. Brightness 20h * Depending on User’s Adjustment

020 Man. Color 20h * Depending on User’s Adjustment

021 Man. Tint 20h * Depending on User’s Adjustment

022 Man. Sharpness 0Fh * Depending on User’s Adjustment

023 Game Contrast 1Fh * Depending on User’s Adjustment

024 Game Brightness 22h * Depending on User’s Adjustment

025 Game Color 10h * Depending on User’s Adjustment

026 Game Tint 20h * Depending on User’s Adjustment

027 Game Sharpness 07h * Depending on User’s Adjustment

028 Gain-comp R 80h Red Gain component

029 Gain-comp G C0h Green Gain component

• All data except in gray box area is fixed. Do not change for correct operating.

• Data in gray box is initial. Can be set according to adjustment information.

•

-15: For 15V LCD Television, -20: For 20V LCD Television

— 5 —

No. Name Initial Data Note

02A Gain-comp B 80h Blue Gain component

02B Offset-comp R 33h Red offset component

02C Offset-comp G 34h Green offset component

02D Offset-comp B 3Ah Blue offset component

02E Phase 10h Phase adjust 02F White-RF-R 00h White Balance Red - TV Differential 030 White-RF-G 00h White Balance Green - TV Differential 031 White-RF-B 00h White Balance Blue - TV Differential 032 Black-RF-R 00h Black Balance Red - TV Differential 033 Black-RF-G 00h Black Balance Green - TV Differential 034 Black-RF-B 00h Black Balance Blue - TV Differential 035 White-AV-R FFh White Balance Red - AV(Standard) 036 White-AV-G F7h White Balance Green - AV(Standard) 037 White-AV-B FFh White Balance Blue - AV(Standard) 038 Black-AV-R 00H Black Balance Red - AV(Standard) 039 Black-AV-G 00H Black Balance Green - AV(Standard) 03A Black-AV-B 00h Black Balance Blue - AV(Standard) 03B White-S-R 00h White Balance Red - S-Input Differential 03C White-S-G 00h White Balance Green - S-Input Differential 03D White-S-B 00h White Balance Blue - S-Input Differential 03E Black-S-R 00h Black Balance Red - S-Input Differential 03F Black-S-G 00h Black Balance Green - S-Input Differential 040 Black-S-B 00h Black Balance Blue - S-Input Differential 041 White-480i-R 00h White Balance Red - 480i Differential 042 White-480i-G 00h White Balance Green - 480i Differential 043 White-480i-B 00h White Balance Blue - 480i Differential 044 Black-480i-R 00h Black Balance Red - 480i Differential 045 Black-480i-G 00h Black Balance Green - 480i Differential 046 Black-480i-B 00h Black Balance Blue - 480i Differential 047 White-480p-R 00h White Balance Red - 480p Differential 048 White-480p-G 00h White Balance Green - 480p Differential 049 White-480p-B 00h White Balance Blue - 480p Differential 04A Black-480p-R 00h Black Balance Red - 480p Differential 04B Black-480p-G 00h Black Balance Green - 480p Differential 04C Black-480p-B 00h Black Balance Blue - 480p Differential 04D CT-Cool-R F0h Color Temp. Cool Red Differential 04E CT-Cool-G F8h Color Temp. Cool Green Differential 04F CT-Cool-B 00h Color Temp. Cool Blue Differential 050 CT-Norm-R 00h Color Temp. Normal Red Differential 051 CT-Norm-G 00h Color Temp. Normal Green Differential 052 CT-Norm-B 00h Color Temp. Normal Blue Differential 053 CT-Warm-R 00h Color Temp. Warm Red Differential 054 CT-Warm-G E8h Color Temp. Warm Green Differential 055 CT-Warm-B EAh Color Temp. Warm Blue Differential 056 Sound-AGC 00h AGC ON/OFF 057 AGC-LVL 00h Surround ON/OFF 058 OS-RF HS-H 0Ah Over Scan TV H size

— 6 —

No. Name Initial Data Note

059 OS-RF HS-L 00h Over Scan TV H size 05A OS-RF VS-H 07h Over Scan TV V size 05B OS-RF VS-L 00h Over Scan TV V size 05C OS-RF Wid-H 9Eh Over Scan TV Width 05D OS-RF Wid-L 00h Over Scan TV Width 05E OS-RF Hei-H 6Ch Over Scan TV Height 05F OS-RF Hei-L 00h Over Scan TV Height 060 OS-480i-AV HS-H 0Ah Over Scan AV H size 061 OS-480i-AV HS-L 00h Over Scan AV H size 062 OS-480i-AV VS-H 07h Over Scan AV V size 063 OS-480i-AV VS-L 00h Over Scan AV V size 064 OS-480i-AV Wid-H 9Eh Over Scan AV Width 065 OS-480i-AV Wid-L 00h Over Scan AV Width 066 OS-480i-AV Hei-H 6Ch Over Scan AV Height 067 OS-480i-AV Hei-L 00h Over Scan AV Height 068 OS-480i-YC HS-H 0Ah Over Scan S-Input H size 069 OS-480i-YC HS-L 00h Over Scan S-Input H size 06A OS-480i-YC VS-H 07h Over Scan S-Input V size 06B OS-480i-YC VS-L 00h Over Scan S-Input V size 06C OS-480i-YC Wid-H 9Eh Over Scan S-Input Width 06D OS-480i-YC Wid-L 00h Over Scan S-Input Width 06E OS-480i-YC Hei-H 6Ch Over Scan S-Input Height 06F OS-480i-YC Hei-L 00h Over Scan S-Input Height 070 OS-480i- HS-H 0Ah Over Scan 480i H size 071 OS-480i- HS-L 00h Over Scan 480i H size 072 OS-480i- VS-H 07h Over Scan 480i V size 073 OS-480i- VS-L 00h Over Scan 480i V size 074 OS-480i- Wid-H 9Eh Over Scan 480i Width 075 OS-480i- Wid-L 00h Over Scan 480i Width 076 OS-480i- Hei-H 6Ch Over Scan 480i Height 077 OS-480i- Hei-L 00h Over Scan 480i Height 078 OS-480p- HS-H 03h Over Scan 480p H size 079 OS-480p- HS-L 00h Over Scan 480p H size 07A OS-480p- VS-H 04h Over Scan 480p V size 07B OS-480p- VS-L 00h Over Scan 480p V size 07C OS-480p- Wid-H 54h Over Scan 480p Width 07D OS-480p- Wid-L 01h Over Scan 480p Width 07E OS-480p- Hei-H 70h Over Scan 480p Height 07F OS-480p- Hei-L 01h Over Scan 480p Height 080 BLight-Bright F0h Back light Bright (PWM) 081 BLight-Mid D4h Back light Middle (PWM) 082 BLight-Dark A0h Back light Dark (PWM)

083 POWER ERR 00h Power Failure History

084 GAMMA 05h GAMMA Correction 085 ASPECT VSIZE-H 5Ah ASPECT Size 086 ASPECT VSIZE-L 00h ASPECT Size 087 ASPECT VSTART-H 0Fh ASPECT V Start

— 7 —

No. Name Initial Data Note

088 ASPECT VSTART-L 00h ASPECT V Start 089 APL-Lo 00h APL (Not Used) 08A APL-Hi 00h APL (Not Used) 08B ABCL-Lo 00h APL (Not Used) 08C ABCL-Hi 00h APL (Not Used) 08D OSD HP-20 22h OSD Hphase (For 20V) 08E OSD HP-15 20h OSD Hphase (For 15V) 08F CCD HP-20 31h CCD Hphase (For 20V) 090 CCD HP-15 6Dh CCD Hphase (For 15V) 091 CCD Slicer level 0Bh CCD Slicer level 092 H RANGE-480i 12h Sync Det. 480i Correction 093 H RANGE-480p 13h Sync Det. 480p Correction 094 V RANGE 17h Sync Det. V Correction

095 WB ** White Balance Adjustment

096 BB ** Black Balance Adjustment 097 PLL-TV-AMP1 00h TV-Mode PLL Integral Time Constant (AMP1) 098 PLL-TV-AMP2 04h TV-Mode PLL Integral Time Constant (AMP2) 099 PLL-TV-AMP3 04h TV-Mode PLL Integral Time Constant (AMP3) 09A PLL-TV-GAIN1 0Ah TV-Mode PLLLoop Gain (GAIN1) 09B PLL-TV-GAIN2 05h TV-Mode PLL Loop Gain (GAIN2) 09C PLL-TV-GAIN3 06h TV-Mode PLLLoop Gain (GAIN3) 09D PLL-AV-AMP1 00h AV-Mode PLL Integral Time Constant (AMP1) 09E PLL-AV-AMP2 04h AV-Mode PLL Integral Time Constant (AMP2) 09F PLL-AV-AMP3 04h AV-Mode PLL Integral Time Constant (AMP3) 0A0 PLL-AV-GAIN1 0Ah AV-Mode PLL Loop Gain (GAIN1) 0A1 PLL-AV-GAIN2 05h AV-Mode PLL Loop Gain (GAIN2) 0A2 PLL-AV-GAIN3 06h AV-Mode PLL Loop Gain (GAIN3) 0A3 PLL-480i-AMP1 00h 480i-Mode PLL Integral Time Constant (AMP1) 0A4 PLL-480i-AMP2 04h 480i-Mode PLL Integral Time Constant (AMP2) 0A5 PLL-480i-AMP3 04h 480i-Mode PLL Integral Time Constant (AMP3) 0A6 PLL-480i-GAIN1 0Ah 480i-Mode PLL Loop Gain (GAIN1) 0A7 PLL-480i-GAIN2 05h 480i-Mode PLL Loop Gain (GAIN2) 0A8 PLL-480i-GAIN3 0Fh 480i-Mode PLL Loop Gain (GAIN3)

0A9 COL-KILLER-TV 00h TV-Mode Color Killer Level 0AA COL-KILLER-AV 00h AV-Mode Color Killer Level 0AB ACC-TV 03h TV-Mode ACC Level 0AC ACC-AV 03h A V -Mode ACC Level 0AD Dec-out Cr Offset-15 00h Cr Output Off-set (15V) 0AE Dec-out Cr Offset-20 04h Cr Output Off-set (20V)

0AF Dec-out Cb Offset-15 00h Cb Output Off-set (15V)

0B0 Dec-out Cb Offset-20 00h Cb Output Off-set (20V)

0B1 480i-inp Cr Offset-15 00h Cr-Input Off-set Adjustment (15V)

0B2 480i-inp Cr Offset-20 00h Cr-Input Off-set Adjustment (20V)

0B3 480i-inp Cb Offset-15 00h Cb-Input Off-set Adjustment (15V)

0B4 480i-inp Cb Offset-20 00h Cb-Input Off-set Adjustment (20V)

0B5 Dec-out Cr Gain-15 07h Cr Output Gain (15V)

0B6 Dec-out Cr Gain-20 07h Cr Output Gain (20V)

— 8 —

No. Name Initial Data Note

0B7 Dec-out Cb Gain-15 07h Cb Output Gain (15V) 0B8 Dec-out Cb Gain-20 07h Cb Output Gain (20V)

0B9 LTI GAIN 03h LTI Gain 0BA EDG2LIM-TV 10h Edge Limited (TV) 0BB EDG2LIM-AV 10h Edge Limited (AV) 0BC EDG2LIM-S 10h Edge Limited (S) 0BD EDG2LIM-480i 08h Edge Limited (480i) 0BE EDG2LIM-480p 08h Edge Limited (480p) 0BF OPTION 00h OPTION Data 0C0 PASSWORD **h PASSWORD 0C1 480i Sub-Cont-15 62h 480i Sub-Contrast 0C2 480i Sub-Brightness-15 78h 480i Sub-Brightness 0C3 480i Sub-Color-15 52h 480i Sub-Color 0C4 480i Sub-Tint-15 00h 480i Sub-Tint 0C5 480i Sub-Sharp-15 16h 480i Sub-Sharpness 0C6 480p Sub-Cont-15 3Fh 480p Sub-Contrast 0C7 480p Sub-Brightness-15 7Fh 480p Sub-Brightness 0C8 480p Sub-Color-15 5Ch 480p Sub-Color 0C9 480p Sub-Tint-15 00h 480p Sub-Tint 0CA 480p Sub-Sharp-15 20h 480p Sub-Sharpness 0CB AV Sub-Cont-15 60h Composite Sub-Contrast 0CC AV Sub-Brightness-15 78h Composite Sub-Brightness 0CD AV Sub-Color-15 5Ah Composite Sub-Color 0CE AV Sub-Tint-15 00h Composite Sub-Tint 0CF AV Sub-Sharp-15 16h Composite Sub-Sharpness 0D0 S Sub-Cont-15 60h S-Input Sub-Contrast 0D1 S Sub-Brightness-15 78h S-Input Sub-Brightness 0D2 S Sub-Color-15 5Eh S-Input Sub-Color 0D3 S Sub-Tint-15 00h S-Input Sub-Tint 0D4 S Sub-Sharp-15 16h S-Input Sub-Sharpness 0D5 RF Sub-Cont-15 5Eh TV Sub-Contrast 0D6 RF Sub-Brightness-15 78h TV Sub-Brightness 0D7 RF Sub-Color-15 5Ah TV Sub-Color 0D8 RF Sub-Tint-15 00h TV Sub-Tint 0D9 RF Sub-Sharp-15 16h TV Sub-Sharpness 0DA Gain-comp R-15 80h Red Gain component 0DB Gain-comp G-15 C0h Green Gain component 0DC Gain-comp B-15 80h Blue Gain component 0DD Offset-comp R-15 36h Red offset component 0DE Offset-comp G-15 38h Green offset component 0DF Offset-comp B-15 3Ch Blue offset component 0E0 Phase-15 10h Phase adjust 0E1 White-RF-R-15 00h White Balance Red - TV Differential 0E2 White-RF-G-15 00h White Balance Green - TV Differential 0E3 White-RF-B-15 00h White Balance Blue - TV Differential 0E4 Black-RF-R-15 00h Black Balance Red - TV Differential 0E5 Black-RF-G-15 00h Black Balance Green - TV Differential

— 9 —

0E6 Black-RF-B-15 00h Black Balance Blue - TV Differential 0E7 White-AV-R-15 F1h White Balance Red - AV(Standard) 0E8 White-AV-G-15 DEh White Balance Green - AV(Standard)

0E9 White-AV-B-15 FFh White Balance Blue - AV(Standard) 0EA Black-AV-R-15 00h Black Balance Red - AV(Standard) 0EB Black-AV-G-15 00h Black Balance Green - AV(Standard) 0EC Black-AV-B-15 00h Black Balance Blue - AV(Standard) 0ED White-S-R-15 00h White Balance Red - S-Input Differential 0EE White-S-G-15 00h White Balance Green - S-Input Differential

0EF White-S-B-15 00h White Balance Blue - S-Input Differential

0F0 Black-S-R-15 00h Black Balance Red - S-Input Differential

0F1 Black-S-G-15 00h Black Balance Green - S-Input Differential

0F2 Black-S-B-15 00h Black Balance Blue - S-Input Differential

0F3 White-480i-R-15 00h White Balance Red - 480i Differential

0F4 White-480i-G-15 00h White Balance Green - 480i Differential

0F5 White-480i-B-15 00h White Balance Blue - 480i Differential

0F6 Black-480i-R-15 00h Black Balance Red - 480i Differential

0F7 Black-480i-G-15 00h Black Balance Green - 480i Differential

0F8 Black-480i-B-15 00h Black Balance Blue - 480i Differential

0F9 White-480p-R-15 00h White Balance Red - 480p Differential

0FA White-480p-G-15 00h White Balance Green - 480p Differential

0FB White-480p-B-15 00h White Balance Blue - 480p Differential 0FC Black-480p-R-15 00h Black Balance Red - 480p Differential 0FD Black-480p-G-15 00h Black Balance Green - 480p Differential

0FE Black-480p-B-15 00h Black Balance Blue - 480p Differential

0FF CT-Cool-R-15 F0h Color Temp. Cool Red Differential

100 CT-Cool-G-15 F8h Color Temp. Cool Green Differential

101 CT-Cool-B-15 00h Color Temp. Cool Blue Differential

102 CT-Norm-R-15 00h Color Temp. Normal Red Differential

103 CT-Norm-G-15 00h Color Temp. Normal Green Differential

104 CT-Norm-B-15 00h Color Temp. Normal Blue Differential

105 CT-Warm-R-15 00h Color Temp. Warm Red Differential

106 CT-Warm-G-15 E8h Color Temp. Warm Green Differential

107 CT-Warm-B-15 Eah Color Temp. Warm Blue Differential

108 Sound-AGC-15 00h AGC ON/OFF

109 AGC-LVL-15 00h Surround ON/OFF

10A OS-RF HS-H-15 0Ah Over Scan TV H size

10B OS-RF HS-L-15 00h Over Scan TV H size

10C OS-RF VS-H-15 07h Over Scan TV V size

10D OS-RF VS-L-15 00h Over Scan TV V size

10E OS-RF Wid-H-15 9Eh Over Scan TV Width

10F OS-RF Wid-L-15 00h Over Scan TV Width

110 OS-RF Hei-H-15 6Ch Over Scan TV Height 111 OS-RF Hei-L-15 00h Over Scan TV Height 112 OS-480i-AV HS-H-15 0Ah Over Scan AV H size 113 OS-480i-AV HS-L-15 00h Over Scan AV H size 114 OS-480i-AV VS-H-15 07h Over Scan AV V size

No. Name Initial Data Note

— 10 —

115 OS-480i-AV VS-L-15 00h Over Scan AV V size 116 OS-480i-AV Wid-H-15 9Eh Over Scan AV Width 117 OS-480i-AV Wid-L-15 00h Over Scan AV Width 118 OS-480i-AV Hei-H-15 6Ch Over Scan AV Height

119 OS-480i-AV Hei-L-15 00h Over Scan AV Height 11A OS-480i-YC HS-H-15 0Ah Over Scan S-Input H size 11B OS-480i-YC HS-L-15 00h Over Scan S-Input H size 11C OS-480i-YC VS-H-15 07h Over Scan S-Input V size 11D OS-480i-YC VS-L-15 00h Over Scan S-Input V size 11E OS-480i-YC Wid-H-15 9Eh Over Scan S-Input Width 11F OS-480i-YC Wid-L-15 00h Over Scan S-Input Width 120 OS-480i-YC Hei-H-15 6Ch Over Scan S-Input Height 121 OS-480i-YC Hei-L-15 00h Over Scan S-Input Height 122 OS-480i- HS-H-15 0Ah Over Scan 480i H size 123 OS-480i- HS-L-15 00h Over Scan 480i H size 124 OS-480i- VS-H-15 07h Over Scan 480i V size 125 OS-480i- VS-L-15 00h Over Scan 480i V size 126 OS-480i- Wid-H-15 9Eh Over Scan 480i Width 127 OS-480i- Wid-L-15 00h Over Scan 480i Width 128 OS-480i- Hei-H-15 6Ch Over Scan 480i Height 129 OS-480i- Hei-L-15 00h Over Scan 480i Height

12A OS-480p- HS-H-15 02h Over Scan 480p H size 12B OS-480p- HS-L-15 00h Over Scan 480p H size 12C OS-480p- VS-H-15 00h Over Scan 480p V size 12D OS-480p- VS-L-15 00h Over Scan 480p V size 12E OS-480p- Wid-H-15 54h Over Scan 480p Width

12F OS-480p- Wid-L-15 01h Over Scan 480p Width 130 OS-480p- Hei-H-15 F0h Over Scan 480p Height 131 OS-480p- Hei-L-15 00h Over Scan 480p Height 132 BLight-Bright-15 F0h Back light Bright (PWM) 133 BLight-Mid-15 B0h Back light Middle (PWM) 134 BLight-Dark-15 60h Back light Dark (PWM) 135 GAMMA-15 07h GAMMA Correction 136 ASPECT VSIZE-H-15 5Ah ASPECT Size 137 ASPECT VSIZE-L-15 00h ASPECT Size 138 ASPECT VSTART-H-15 0Fh ASPECT V Start 139 ASPECT VSTART-L-15 00h ASPECT V Start

13A OFFSET **h Offset Adjustment 13B R001 00h ROM Correction Data 13C R002 00h ROM Correction Data 13D R003 00h ROM Correction Data 13E R004 00h ROM Correction Data

13F R005 00h ROM Correction Data 140 R006 00h ROM Correction Data 141 R007 00h ROM Correction Data 142 R008 00h ROM Correction Data 143 R009 00h ROM Correction Data

No. Name Initial Data Note

— 11 —

No. Name Initial Data Note

144 R010 00h ROM Correction Data

↓↓ ↓ ↓ ↓↓ ↓ ↓ ↓↓ ↓ ↓

1D0 R150 00h ROM Correction Data 1D1 R151 00h ROM Correction Data 1D2 R152 00h ROM Correction Data 1D3 R153 00h ROM Correction Data 1D4 R154 00h ROM Correction Data 1D5 R155 00h ROM Correction Data

— 12 —

SERVICE AD JUSTMENTS (Continued)

WHITE BALANCE ADJUSTMENT

Composite

1. Connect a color-bar generator to the antenna terminal or external (composite) video input terminal.

2. Switch the generator to the white pattern.

3. Set the television to following conditions:

Picture: AUTO Color Enhancer: Normal Back Light: Bright Display Area: 4:3

4. Enter the Service Mode.The Menu display will appear.

5. Select “White Balance Adjustment” Menu (No. 095).

6. Adjust Red, Green, and Blue Levels alternately with 1, 3, 4, 6, 7, or 9 keys to produce normal black and white picture in highlight areas. The White Balance Level adjustment data will automatically be written in the Service Menu No. 035(R), No. 036(G), and No. 037(B).

Note: One or two data of RGB should be left at ”FF” for

normal contrast level.

Component “480i”

Caution: White Balance Adjustment of Composite must be

completed before attempting Component adjustments.

White Balance Adjustment for Component (480i/ 480p) may be unnecessary if the adjustment of Composite is OK.

1. Connect a color-bar generator to the external component video input terminal.

2. Switch the generator to the white pattern of component video signal “480i.”

3. Set the television to following conditions:

Picture: AUTO Color Enhancer: Normal Back Light: Bright Display Area: 4:3

4. Enter the Service Mode.The Menu display will appear.

5. Select “White Balance Adjustment” Menu (No. 095).

6. Adjust Red, Green, and Blue Levels alternately with 1, 3, 4, 6, 7, or 9 key to produce normal black and white picture in highlight areas. The White Balance Level adjustment data will automatically be written in the Service Menu No. 041(R), No. 042(G), and No. 043(B).

Note: One or two data of RGB should be left at ”FF” for

normal contrast level.

Component “480p”

1. Connect a color-bar generator to the external component video input terminal.

2. Switch the generator to the white pattern of component video signal “480p.”

3. Set the television to following conditions:

Picture: AUTO Color Enhancer: Normal Back Light: Bright Display Area: 4:3

4. Enter the Service Mode.The Menu display will appear.

5. Select “White Balance Adjustment” Menu (No. 095).

Note: One or two data of RGB should be left at ”FF” for

normal contrast level.

Offset Adjustment (Component “480p”) Black (Dark Gray) Balance Adjustment

1. Connect a color-bar generator to the external component video input terminal.

2. Switch the generator to the dark gray pattern (“30% white”recommended ) of component video signal “480p.”

3. Set the television to following conditions:

Picture: AUTO Color Enhancer: Normal Back Light: Bright Display Area: 4:3

4. Enter the Service Mode.The Menu display will appear.

5. Select “Offset Adjustment” Menu items No.02B and No. 02D.

6. Adjust No. 02B Red Level and No. 02D Blue Level with the Volume – or + keys to produce a normal black and white picture in dark gray areas.

Note: No. 02C Green Level should remain fixed. Do not

adjust.

4 5 6

7 98

RD(–)

RD(+)

BD(–)

BD(+)

(N/A)

GD(–)

(N/A)

GD(+)

(N/A)

Remote Control Number keys’ functions inService Menu “White Balance Adjustment”

FOR RED LEVEL ADJUSTMENT

FOR BLUE LEVEL ADJUSTMENT

FOR GREEN LEVEL ADJUSTMENT

— 13 —

CPU (IC801) and I/O Expander (IC899) are programmed so the set will go to the standby mode when there is circuit failure as described below. (Refer to”Power Supply Lines.”)

1. Power Failure 1: Detected voltage failure for digital circuit. (Connected to IC899 pin 4.)

2. Power Failure 2: Detected voltage failure for LCD panel. (Connected to IC899 pin 5.)

3. Power Failure 3: Detected voltage failure for analog circuit. (Connected to IC899 pin 6.)

4. Power Failure 4: Detected voltage failure for audio circuit. (Connected to IC899 pin 7.)

(Normal: High; Failure: Low)

LED Flashing

When IC899 detects Power Failure the LED will flash to indicate a power failure has occurred. The number of flashes will be determined by the type of failure detected as shown below.

POWER FAILURE CIRCUIT

Number of flashes Failure Name

1 Power Failure 1 2 Power Failure 2 3 Power Failure 3 4 Power Failure 4

Note: If power failure is detected 3 times in 15 minutes, the set will enter the standby mode and cannot be switched On. To

reset the operating programs of the CPU it is necessary to disconnect the AC cord or AC adapter for a short time.

History of Power Failure

When finishing the repair or stopping the Power Failure, the history of past failures can be checked.

To see the history

1. Enter the service mode. See “Service Adjustments” page 3.

2. Select Item No.083 POWER ERR from the Service Adjustment Data Table.

History of Power Failures (Item No. 083)

Note: If simultaneous failures have been detected, the sum of each data is displayed. For example:

Power failures 3 & 4 04h + 08h = 10h(16)

Attention:

After finishing service, reset the data of Item No. 083 with the + or – keys to “00h(0).”

Failure Name Data

No Failure 00h(0) Power Failure 1 01h(1) Power Failure 2 02h(2) Power Failure 3 04h(4) Power Failure 4 08h(8)

— 14 —

STAND REMOVAL

Note: Position TV face down on a padded or cush-

ioned surface to protect the screen and finish.

1. Remove a screw to take the stand cover off.

2. Remove 4 screws to take the stand off. CAUTION: Hold the stand firmly as you remove the last screw.

MECHANICAL DISASSEMBLY

CABINET BACK REMOVAL

1. Remove 9 screws.

2. Pry at position “A” between cabinet front and back to unhook the 2 snaps. Lift the cabinet back upward and off.

Note: The cabinet back may still be a little tight due

the snaps at the other locations.

SPEAKER REMOVAL

1. Remove 8 screws to take the speaker boxes off.

2. Remove 8 screws to take the speakers off.

CONTROL BOARD REMOVAL

Remove a screw to take the control board with the panel, button, and holder (assembly parts) off.

INVERTER BOARD REMOVAL

Remove 3 screws to take the inverter board off.

LED BOARD REMOVAL

Remove a screw to take the LED board off.

Speaker Box

Speaker Speaker

Control Board

(Assembly)

Inverter Board

LED Board

Snap

Snap Snap

SnapSnap

Snap

+ 32 hidden pages