Sharp LC-20SH4U, Service Manual

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13
LC-20SH4U
SUPPLEMENT
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
1 MODEL A630A MODEL NUMBER SELECT NOT MODIFIABLE
INCH SIZE 20 SCREEN SIZE SELECT USED FOR ADJUSTMENT PROCESS
(20-INCH AND 13/15-INCH INITIALIZATION, NOT MODIFIABLE FOR
SETTING NOT SWITCHABLE IN OTHER CASES. DATA REWRITE AND
CASE OF DIFFERENT SYSTEMS) READJUSTMENT REQUIRED WHEN
INITIALIZED.
ERROR NO RESET 0 LAMP ERROR COUNT AND RESET SEE THE LAMP ERROR DETECTION.
PUBLIC MODE OFF HOTEL MODE SETTING NOT USED
V-CHIP 1 VCHIP LINE MUTE SETTING NOT USED
EXT CONTROL OFF BUS, UART OPEN NOT USED
ROM AND GAIBU VERSION NUMBERS DISPLAYED AT THE BOTTOM.
VIDEO ADJUSTMENT
2 COM BIAS 450 COMMON BIAS ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
TAMP L 155 Y LOWER LIMIT SETTING AT TAMP ADJUSTMENT NOT USED
YDATA — DATA READ VALUE AT TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
TAMP H 158 Y UPPER LIMIT SETTING AT TAMP ADJUSTMENT NOT USED
NTSC TAMP 90 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
PAL-M TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
PAL-N TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.
BACKGROUND ADJUSTMENT
3 R CUTOFF2 0 RED CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
G CUTOFF2 0 GREEN CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
B CUTOFF2 0 BLUE CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
R-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
G-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
B-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES.
RGB GAMMA 1.0 RGB
γ
COEFFICIENT SETTING NOT USED
TABLE OF VARIOUS SETTINGS
9 I2C DATA 0 I
2
C BUS CONTROL IC DATA WRITE AND READ NOT USED
I2C DATA WAIT WRITE AND READ EXECUTED NOT USED
SOUND — SHIFT TO THE SOUND ADJUSTMENT PAGE USE ENTER KEY TO GO TO THE SOUND ADJUSTMENT PAGE.
DVP — SHIFT TO THE DVP ADJUSTMENT PAGE USE ENTER KEY TO GO TO THE TC ADJUSTMENT PAGE.
TUNER — SHIFT TO THE TUNER ADJUSTMENT PAGE USE ENTER KEY TO GO TO THE TUNER ADJUSTMENT PAGE.
OTHERS — SHIFT TO THE OTHER ADJUSTMENT PAGE USE ENTER KEY TO GO TO THE OTHER ADJUSTMENT PAGE.
LIST OF THE ADJUSTMENT PROCESS MODE MENU
For calling the adjustment process mode and keying in this mode, refer back to
"
ADJUSTING PROCEDURE OF
EACH SECTION
"
.
ADJUSTMENT PROCESS 1st LEVEL ITEM DEFAULT TABLE
BASIC SETTINGS
Page No. Item
Initial
Function
Response precautions on servicing
Value (Do not change other items than designated.)
AUDIO ADJUSTMENT PROCESS SPECIFICATIONS
AUDIO ADJUSTMENT
SOUND1 VOLUME 20 SOUND VOLUME NOT USED
MSP DATA 0 AUDIO IC MSP DATA WRITE AND READ NOT USED
MSP DATA WAIT WRITE AND READ EXECUTED NOT USED
CARRIER MUTE ON AUDIO OUTPUT SETTING WITHOUT TV SYNC NOT USED
IGR THR 12D IGR THRESH LEVEL NOT USED
AUDIO ADJUSTMENT
SOUND2 PRESCALE SCART 27 PRE-SCALE SETTING (EXTERNAL INPUT) NOT USED
PRESCALE FM/AM-M 31 PRE-SCALE SETTING (TV) NOT USED