Electrical Adjustment Instructions - Sharp LC-20AV1U Service Manual

ELECTRICAL ADJUSTMENT INSTRUCTIONS

NOTE: CBA AND PWB MEANS PRINTED WIRING
BOARD.
NOTE:
Electrical adjustments are required after replacing circuit
components and certain mechanical parts. It is important
to perform these adjustments only after all repairs and
replacements have been completed.
Also, do not attempt these adjustments unless the
proper equipment is available.
Test Equipment Required
1. NTSC Pattern Generator (Color Bar W/White Win-
dow, Red Color, Dot Pattern, Gray Scale,
Monoscope, Multi-Burst)
2. Remote control unit (attached remote control unit)
3. Color Analyzer
4. DC Voltmeter
How to set up the service mode:
Service mode:
1. Turn the power on. (Use main power on the TV unit.)
2. In standby mode, simultaneously press "POWER"
button and "MENU" button on the TV unit. Version of
micro computer will display on the LCD or display.
(Ex: 0001AGP-0.11, 0002AGP-0.14 or 0003AGP-
0.17)
1. Initial Setting
General
Enter the Service mode.
Set the each initial data as shown on table 1 below.
Table 1: Initial Data
ITEM
BRT
CNT
CLR-R
CLR-B
TNT
V-TNT
SHR
S-BRT
S-CNT
S-CLR-R
S-CLR-B
S-TNT
S-SHR
C-BRT
C-CNT
C-CLR-R
C-CLR-B
C-TNT
C-SHR
SAIDO
C-SAIDO
NORMAL
DARK
COR ( C/D1 )
COG ( C/D1 )
COB ( C/D1 )
DR ( C/D1 )
DG ( C/D1 )
DB ( C/D1 )
C-COR ( C/D2 )
C-COG ( C/D2 )
C-COB ( C/D2 )
C-DR ( C/D2 )
5-1
BUTTON
DATA
( on the service
VALUE
remote control )
MENU 1
MENU 2
MENU 3
5
0
Vol down 1
Vol down 2
Vol down 3
Vol down 4
Vol down 5
Vol down 6
Vol down 1
Vol down 2
Vol down 3
Vol down 4
L0370EA
124
190
72
72
56
65
28
124
190
72
72
65
28
124
190
67
72
72
28
148
153
74
150
512
512
512
127
131
117
512
512
512
127