Adjustment Method; Contents - Sharp 20F540 Service Manual

20F540
Adjustment Mode Items
Caution: to get into the service mode, one of the ways is press direct key for service items. the other ways
is short the main chassis JA309 and JA402
There is three stage of Service Mode data
First stage data from V01 ~ M06
to go into second stage of service mode data, press MENU key
Second stage data from F01 ~ F51
to go into third stage of service mode data, press MENU key
Third stage data from 001 ~ 020
Below is the contents of these data
First Stage
No. Item Name
V01 SUB-PICTURE
V02 SUB-TINT
V03 SUB-COLOR
V04 SUB-BRIGHT
V05 SUB-SHARP
V06 V-SHIFT
V07 H-SHIFT
V08 RF-AGC
V09 V-SIZE
V10 PIF-VCO
V11 R-CUTOFF
V12 G-CUTOFF
V13 B-CUTOFF
V14 R-DRIVE
V15 B-DRIVE
V16 SUB-COLOR(YUV)
V17 SUB-TINT(YUV)
V18 CC-POS
V19 (Vertical mode)
V20 SUB-VOL
V21 H-VCO
M01 MTS-ATT
M02 MTS-VCO
M03 MTS-FILTER
M04 MTS-WIDEBAND
M05 MTS-SPECTRAL
M06 SUB-VOL
Auto Adjustment Item
1. H-VCO (Currently need manual adj)
2. RF-AGC
3. PIF-VCO
4. MTS-FILTER

ADJUSTMENT METHOD

IC Register
1 Chip CONTRAST
1 Chip TINT
1 Chip COLOR
1 Chip BRIGHT
1 Chip VIDEO-TONE
1 Chip V-SHIFT
1 Chip H-PHASE
1 Chip RF-Delay
1 Chip V-SIZE
1 Chip VIF-VCO
1 Chip R-CUTOFF
1 Chip G-CUTOFF
1 Chip B-CUTOFF
1 Chip R-DRIVE
1 Chip B-DRIVE
1 Chip COLOR
1 Chip BASEBAND-TINT
Micron
1 Chip V-MUTE,SERVICE
1 Chip A-ATT
1 Chip H-VCO
MTS ATT
MTS VCO
MTS FILTER
MTS WIDEBAND
MTS SPECTRAL
MTS VOL
7
Range Default
0~127 127
0~127 64
0~127 64
0~255 128
0~63 32
0~7 4
0~31 16
0~127 127
0~63 32
0~63 32
0~255 127
0~255 127
0~255 127
0~127 64
0~127 64
0~127 64
0~127 64
0~255 32
0, 1, 2 0
0~127 127
0~7 4
0~15 10
0~63 32
0~63 28
0~63 27
0~63 32
0~63 63