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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 0OSD 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 7Sub Bias Adj.SBIAS 00~127 105 Red Bias Adj.RBIAS 00~255 0Green Bias Adj.GBIAS 00~255 0Blue Bias Adj.BBIAS 00~255 0Red Drive Adj.RDRIV 00~127 64 Green Drive Adj.GDRIV 00~15 8Blue 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 8R-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 0Coring Adj.
35 BLKS 00~03 3 Setting of Black stretch start.
36 BLKG 00~03 3Setting of Black stretch gain.
37 BRTA 0,1 0 On and off of ABL.
38 BRST 0,1 0Setting of ABL.
39 BRTH 00~07 0Setting of ABL.
(Do not change)
40
41
42
43
44
White peak limitter.WPL 00~03 2Y Gamma setting.YGAM 00~03 0
Switching of Pre-shoot and Over shoot in AV mode.
PORW 0,1 0Pre-shoot/Over shoot Adj. in AV mode.PORS 00~03 2RF Coring Gain Adj.
RFCO 00~03 0
NO. ITEM DATA
RANGE INITIAL
DATA DESCRIPTION
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
Switching of RF Pre-shoot and Over shoot.
PORWN 0,1 0RF Pre-shoot/Over shoot Adj.
PORSN 00~03 0RF Tint Adj.
TINT -16~+15 0NTSC 4.43 Tint Adj.
TINT 443 -16~+15 -12 RF Sharpness Adj.SHRF -32~+31 0OSD TEXT Contrast.TEXTC -
128
~+
127
0Volume Control Adj.VOLUM 00~255 127 De emphasis TC.DEEM 0,1 0 VIF System Switch.VIFSW 00~03 0SIF System Switch.SIFSW 00~03 1Video Level Adj.V-LVL 00~07 4FM Level Adj.FMLVL 00~31 16 IF Test.IF-TE 0,1 0IF Test-1.IF-T1 0,1 1
IF-T2
60 IF-T3 IF Test-3
61 H-FRQ 00~63 34 Correction of Horizontal Frequency.
62 FBTS 0,1 0
Switching of H-blanking and Flyback Pulse.
63 COOP 00~07 7Setting of Colour Killer Level.
64 HBLKL 00~07 7H-Blanking Control. (Left)
65 HBLKR 00~07 3 H-Blanking Control. (Right)
66 AFCRF 0,1 0RF AFC Gain & Gate Adj.
67 VSURF 0,1 0RF V-Sync. Separation Adj.
68 CDMRF 00~07 0 RF V-Countdown Circuit Adj.
69 AFCAV 0,1 1AV AFC Gain & Gate Adj.
70 VSUAV 0,1 0AV V-Sync. Separation Adj.
71 CDMAV 00~07 0 AV V-Countdown Circuit Adj.
72 HLVDRF 0,1 1
Incorrect operation prevention at the time of a special signal (RF mode)
73 HLVDAV 0,1 1
Incorrecr operation prevention at the time of a special signal (AV mode)
74 VCO-SW 0,1 0 C-VCO Adj. Switch.
75 VCO-ADJ 00~03 3C-VCO Adj.
76
CROSS-BW
00~03 0Pattern Output.
77 AVNCON 00~127 64
Contrast Adj.of the blue back in AV mode.
78 AVNBRI 00~127 64
Brightness Adj. of the blue back in AV mode.
0,1 1IF Test-2
00~255 136
79 POMT 00~255 25 Power Mute Time Adj.
80 CHMT 00~255 10 Channel Change Mute time Agj.
81 SYST 00~15 5
Selection of the number of times of a Colour system judgment.
82 S-STE 0,1 0Stereo/Mono Option. Stereo=1, Mono=0
83 VOLTBL 00~03 2
Selection of the change characteristic of volume.
84 CHIP818 0,1 0Option of 818(1:TINT Control reversal)/
828(2:TINT through control) selection.
300 R00 00~255 112 CPU Debug Date.
301 R01 00~255 64 CPU Debug Date.
302 R02 00~255 92 CPU Debug Date.
