Sanyo CR21KX2, Service Manual

Page: 9 / 30

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Service Adjustments with Replacing Memory IC(IC802)
[2] Required Service Adjustments
Readjust the following service adjustments.
Adjustments Service Mode No. & Item
RF AGC Item 01, RF AGC
Horizontal centre Item 02, H-PHA
Vertical size Item 04, V-SIZ
Vertical-S correction Item 05, V-SCO
Vertical linearity Item 06, V-LIN
Gray scale Item 14-17, 19-21
Further adjustment please refer to page 12 and 13.
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
DATA
RANGE
INITIAL
DATA
DESCRIPTION
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
RF AGC Adj. RF AGC
00~63
30
H-Phase (H-Centering) Adj. (50Hz) H-PHA
00~31
5
V-Position (V-Centering) Adj. (50Hz) Fixed. V-POS 00~63
40
V-Size Adj. (50Hz) V-SIZ
00~127
69
V-S Correction (50Hz)
V-SCO 00~31
15
V-Linearity Adj. (50Hz)
V-LIN 00~31
19
H-Centering Adj. (60Hz) H-P60
-80~+70
+5
V-Size Adj. (60Hz)
V-S60 -32~+31 0
OSD H-Position Adj.
OSDHP 00~255
29
OSD Contrast Adj. OSDC
00~127
45
Correction of the V-size accompanying brightness change. V-SCP
00~07
7
Correction of the H-size accompanying brightness change. H-SCP
00~07
7
Sub Bias Adj. SBIAS
00~127
105
Red Bias Adj. RBIAS
00~255
0
Green Bias Adj. GBIAS
00~255
0
Blue Bias Adj. BBIAS
00~255
0
Red Drive Adj. RDRIV
00~127
64
Green Drive Adj. GDRIV
00~15
8
Blue Drive Adj. BDRIV
00~127
64
1-LINE APPEAR
21 DRV
White Balance Adj.
22 B-YD 00~15
10
B-Y DC level Adj.. Colour compensation (PAL)
23
R-YD 00~15 10 R-Y DC level Adj.. Colour compensation (PAL)
24
B-YDN
-08~+07
0
NTSC B-Y DC level Adj. (Difference value over PAL.)
25
R-YDN
-08~+07
0 NTSC R-Y DC level Adj. (Difference value over PAL.)
26 SBDC -08~+07
-8 SECAM B-Y DC level Adj. (Difference value over PAL.)
27
SRDC
-08~+07
-5
SECAM R-Y DC level Adj. (Difference value over PAL.)
28
G-YA 0,1 0
G-Y angle Adj. (The reproducibility of a colour is changed.)
29
RBGB 00~15 8 R-Y, B-Y Gain Blance Adj. (Do not change.)
30 RBAG 00~15 8
R-Y, B-Y Angle Adj. (Do not change.)
31 G-YAN 0,1 0
NTSC G-Y Angle Adj. (Difference value over PAL.)
32 RBGBN -08~+07 0
NTSC R-Y, B-Y Gain Balance Adj. (Difference value over PAL.)
33 RBAGN -08~+07 0
NTSC G-Y, B-Y Angle Adj. (Difference value over PAL)
34 COGV 00~03 0 Coring Adj.
35 BLKS 00~03 3 Setting of Black stretch start.
36
BLKG
00~03 3 Setting of Black stretch gain.
37 BRTA 0,1
0 On and off of ABL.
38
BRST 0,1
0 Setting of ABL.
39 BRTH 00~07 0
Setting of ABL.
(Do not change)
40
41
42
43
44
White peak limitter. WPL
00~03 2
Y Gamma setting. YGAM
00~03
0
Switching of Pre-shoot and Over shoot in AV mode. PORW 0,1
0
Pre-shoot/Over shoot Adj. in AV mode. PORS
00~03
2
RF Coring Gain Adj. RFCO 00~03
0