Sanyo C21LB25S Service Manual page 9

Service Adjustments with Replacing Memory IC(IC802)
[2] Service Adjustments-1
Following table shows the initial values which have been stored in the CPU ROM, and items for the service
adjustments.
Service mode adjustments table in CPU ROM
No. Item Initial value
01 H-P
02 V-P
03 V-S
04 OSD
05 AGC
06 VCO
07 SIF
08 SELF
09 DLT
10 DL F
11 B-ST
12 ABCL
13 AB-G
14 TRAP
15 WBK
16 BBK
17 AFCG
18 RBI
19 GBI
20 BBI
21 RD
22 BD
23 DRV
24 --
25 OPT1
26 OPT2
27 CCD
Notes:
The initial value that the CPU writes down the CPU ROM data to the memory when replaced the memory IC. TV set
may not operate correctly with this initial value. It is required to set up the fine adjustment for service adjustments
described below.
Readjust the following service adjustments.
Adjustments
Horizontal centre adjustment
Vertical centre adjustment
Vertical size adjustment
OSD position adjustment
RF AGC adjustment
AFT adjustment
Grey scale adjustment
Further adjustment please refer to page 11 and 12.
Range Description
08 00~15 Horizontal centre adjustment
04 00~07 Vertical centre adjustment
64 00~127 Vertical size adjustment
20 01~63 OSD position adjustment
64 00~127 RF AGC adjustment
128 00~255 VCO (AFT) adjustment
00 00 SIF VCO adjustment
00 00~15 SELF-adjusting
02 00~03 DL-time adjustment
00 00, 01 DL-fine adjustment
00 00, 01 Black stretch on/off setting
01 00, 01 ABCL adjustment
00 00, 01 ABCL gain adjustment
03 00~03 Trap frequency adjustment
00 00, 01 White back setting
00 00, 01 Blue back setting
02 00~02 AFC gain adjustment
00 00~255 Red bias adjustment
00 00~255 Green bias adjustment
00 00~255 Blue bias adjustment
64 00~127 Red drive adjustment
64 00~127 Blue drive adjustment
-- -- White balance adjustment
-- -- Y-cut setting
-- -- Option
-- -- Option
20 01~255 Closed Caption position adjustment
Service Mode No. & Item
Item 01, H-P
Item 02, V-P
Item 03, V-S
Item 04, OSD
Item 05, AGC
Item 06, VCO
Item 18-24
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Grey scale adjustment