Sony KV-T25SZ8 Service Manual ▷ View online
– 17 –
KV-T25SZ8
RM-870
Entering service mode
With the unit on standby
↓
DISPLAY
↓
5
↓
VOL (+)
↓
POWER
The operation sequence puts the unit into service mode.
SECTION 5
CIRCUIT ADJUSTMENTS
5-1. ADJUSTMENTS WITH COMMANDER
Service adjustments are made with the RM-870 that comes with
this unit.
[1], [4]
Raise/lower the service item number
[3], [6]
Raise/lower the data
[MUTING]
Writes
[0]
Executes the writing
[7], [0]
All the data becomes the values in memory
[8], [0]
All user control goes to the standard state
[5], [0]
Service data initialization (Be sure not to use
usually.)
[2], [0]
Write 50Hz adjustment data to 60Hz, or vice
versa.
The screen display is :
[1], [4]
Select the adjustment item.
↓
[3], [6]
Raise/lower the data.
↓
[MUTING]
Writes
↓
[0]
Executes the writing.
MUTING
TEXT
VIDEO
HOLD
TV
TEXT CLR
+
SELECT
PIC MODE
A/B
ENLARGE
WAKE UP
INDEX
VOL
PROGR
SLEEP
+
1
2
3
4
5
6
7
8
9
0
DISPLAY
REVEAL
POWER
+
÷
SERVICE
Mode
08
DATA
RGB
50
Depends on the signals
PAL, SECAM : 50
NTSC : 60
1000
0000
Adjustment item
00
Item number
RM-870
– 18 –
KV-T25SZ8
RM-870
5-2. ADJUSTMENT METHOD
Item Number 08
This explanation uses V-SHIFT as an example.
1. Select 08 V-SHIFT with the [1] and [4] buttons.
2. Raise/lower the data with the [3] and [6] buttons.
3. Select the optimum state. (The standard is 0F for PAL
reception.)
4. Write with the [MUTING] button.
5. Execute the writing with the [0] button. (The WRITE
display will be changed to green SERVICE.)
Use the same method for Items Number 00-4B. Use [1] and [4] to
select the adjustment item, use [3] and [6] to adjust, write with
[MUTING], then execute the write with [0].
WRITE
WRITE
GREEN
0C
VSF
08
SERVICE
50
50
50
GREEN
0C
VSF
08
Adjust with the
[3]
and
[6]
buttons.
Written with the
[MUTING]
.
Write executed with
[0]
.
GREEN
The WRITE display
will be changed back to
SERVICE.
The WRITE display
will be changed back to
SERVICE.
0C
VSF
08
– 19 –
KV-T25SZ8
RM-870
Adjustment Item Table
Data
range
range
Initial
data
Standard data
Note
Device
Item
Adjustment
number
Item
00
HSF
00–3F
24
50: 1F
60: 1F
H SHIFT
TDA8375
01
HSZ
00–3F
23
50: 1F
60: 1F
H SIZE
TDA8375
02
PAP
00–3F
21
50: 2E
60: 2D
PIN AMPLITUDE
TDA8375
03
CNP
00–3F
29
50: 23
60: 26
CORNER PIN
TDA8375
04
TLT
00–3F
20
50: 21
60: 25
TILT
TDA8375
05
VSL
00–3F
20
50: 20
60: 20
V SLOPE
TDA8375
06
VAP
00–3F
1D
50: 38
60: 34
V AMPLITUDE
TDA8375
07
SCR
00–3F
20
50: 20
60: 20
S CORRECTION
TDA8375
08
VSF
00–3F
20
50: 2A
60: 2B
V SHIFT
TDA8375
09
RDR
00–3F
25
26
WHITE POINT R
TDA8375
0A
GDR
00–3F
20
WHITE POINT G
TDA8375
0B
BDR
00–3F
20
WHITE POINT B
TDA8375
0C
FO
00–02
00
TV: 00
VIDEO: 00
TEXT: 01 PHI-1 TIME CONSTANT
TDA8375
0D
AGC
00–3F
30
TV: 2A
VIDEO: 2A
TEXT: 2A AGC TAKE OVER
TDA8375
0E
VSW
00–01
00
TV: 00
VIDEO: 01
TEXT: 00 VIDEO MUTE
TDA8375
0F
FOR
00–03
00
03
FORCED FIELD FREQ.
TDA8375
10
DL
00–01
00
INTERLACE
TDA8375
11
POC
00–01
00
SYNCHRO MODE FIX
TDA8375
12
VID
00–01
00
VIDEO IDENT MODE
TDA8375
13
HCO
00–01
00
EHT TRACKING MODE
TDA8375
14
EVG
00–01
00
ENABLE V GUARD
TDA8375
15
SBL
00–01
00
SERVICE BLANKING
TDA8375
16
PRD
00–01
00
OVER-VOLTAGE INPUT
TDA8375
17
COR
00–01
00
NOISE CORING PEAK
TDA8375
18
PMX
00–3F
27
Others:
Normal: 2C
PICTURE MAX DATA
TDA8375
19
PMI
00-3F
05
Others:
Normal: 04
PICTURE MIN DATA
TDA8375
1A
SBR
00–7F
4B
Others:
Normal: 54
SUB-BRIGHTNESS
TDA8375
1B
SHU
00–0F
07
SUB-HUE
TDA8375
1C
SSH
00–03
01
TV: 01
VIDEO: 02
SUB-SHARPNESS
TDA8375
1D
SC1
00–3F
1F
50: 26
60: 29
SUB-COLOR LOWER
TDA8375
1E
SC2
00–3F
0B
50: 0C
60: 0F
SUB-COLOR HIGHER
TDA8375
1F
AIP
00–7F
3F
ADJUSTMENT IF PLL
TDA8375
20
VZM
00–3F
19
VERTICAL ZOOM
TDA8375
21
FAW
00–FF
08
NICAM FAW THRESH
MSP3410
22
CTM
00–FF
08
NICAM ERROR BIT (MONO)
MSP3410
23
CTN
00–FF
50
NICAM ERROR BIT (NICAM)
MSP3410
24
WCD
00–FF
0A
W. G. CHANGE DATA
MSP3410
25
WST
00–FF
15
W. G. STEREO CUT POINT
MSP3410
26
WTM
00–FF
50
W. G. TIMER CHANGE
MSP3410
27
WBT
00–FF
EA
W. G. BILINGUAL
MSP3410
28
ACG
00–01
01
AGC AUTO/CONST.
MSP3410
29
CDB
00–3F
28
AGC GAIN CONST.
MSP3410
2A
FGP
00–7F
24
FM (BG, I, DK) PRESCALE
MSP3410
2B
FMP
00–7F
40
FM (M) PRESCALE
MSP3410
2C
WGP
00–7F
3C
W. G. PRESCALE
MSP3410
2D
NIP
00–7F
7F
NICAM PLESCALE
MSP3410
2E
CRM
00–01
00
CARRIOR MUTE
MSP3410
2F
CMI
00–03
00
CARRIOR MUTE LEVEL
MSP3410
30
ACO
00–01
01
AUDIO CLOCK OUT
MSP3410
31
WAC
00–0F
01
W. G. AGREEMENT COUNT
MSP3410
32
DLY
00–FF
30
STEREO SEARCH DELAY
MSP3410
33
DLG
00–FF
10
W/G SEARCH DELAY
MSP3410
34
TXP
00–0F
09
0D
TEXT PICTURE CONT.
SAA5281
35
MXP
00–0F
0D
0F
TEXT MIX MODE PIC.
SAA5281
– 20 –
KV-T25SZ8
RM-870
Adjustment Item Table
Data
range
range
Initial
data
Standard data
Note
Device
Item
Adjustment
number
Item
36
BKP
00–3F
00
BLK OFF PICTURE
CXP85200
37
HBL
00–3F
25
H BLK LEFT WIDTH
CXP85200
38
HBR
00–3F
20
H BLK RIGHT WIDTH
CXP85200
39
VBH
00–7F
00
50:
60:
V BLK HIGHT WIDTH
CXP85200
3A
VBL
00–FF
FF
V BLK LOW WIDTH
CXP85200
3B
ODL
00–FF
10
POWER ON DELAY
CXP85200
3C
OFR
00–0F
00
REMO. CON. RGB OUT
CXP85200
3D
OFM
00–0F
00
MAIN POWER RGB OUT
CXP85200
3E
OSH
00–3F
0A
OSD POSITION H
CXP85200
3F
DKS
00–01
00
D/K STEREO SEARCH
CXP85200
40
MUT
00–01
01
00
NO SYNC. MUTE
CXP85200
41
DWZ
00–01
00
DISEBLE WIDEZOOM
CXP85200
42
ABL
00–01
01
00
BRIGHT ABL
CXP85200
43
DTV
00–01
00
DISABLE TV SYS KEY
CXP85200
44
SCM
00–01
00
SECAM TRAP ACTIVE
CXP85200
45
ROC
00–0F
07
ROTATION CENTER
CXP85200
46
ROS
00–07
03
07
ROTATION STEP WID
CXP85200
47
DVM
00–01
00
DISABLE VM MODE
CXP85200
48
FBT
00–01
01
C/M FBT LAYER SHORT
CXP85200
49
OP0
00–FF
40
Refer to table below
OPTION 0
CXP85200
4A
OP1
00–FF
07
Refer to table below
OPTION 1
CXP85200
4B
OP2
00–FF
00
Refer to table below
OPTION 2
CXP85200
NOTE
•
Standard Data:
Those are the standard data values written on the microprocessor. Therefore, the data values of the
modes are stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some items.
modes are stored respectively in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some items.
•
50 ...................... 50 Hz data
•
60 ...................... 60 Hz data
•
Standard data listed on the adjustment item table are reference values, therefore it is different for every model.
ITEM INFORMATION
•
10. DL: TV/MIX Mode 0=Interlace 1=Non interlace, TEXT Mode 0=Non interlace 1=Interlace
•
42. ABL: Bright ABL ON/OFF ON=1 OFF=0
•
49. OP0,
•
4A. OP1,
•
4B. OP2 :
Input data are different according to models.
AV INPUT : 00
AV INPUT : 00
→
NO MODEL, 01
→
MONO, CXA1315, 10/11
→
STEREO, TDA8424
TV System : 00
→
Multi model, 01
→
B/G, 10
→
D/K, I, 11
→
B/G, D/K
NTSC, SECAM, Chin
Shrp : Dynamic Mode @ 1
Shrp : Dynamic Mode @ 1
→
Sharpness 50%, 0
→
Sharpness 70%.
VM Operation : 0
→
OFF, 1
→
ON
No. 49 OP0 * Input data are different according to models
Item
–
AV Input
Shrp
–
–
–
Saudi
KV-T25SZ8
0
1
0
0
0
0
0
0
No. 4A OP1
Item
WIDE
TILT
–
TV System
NTSC
SECAM
Chin
KV-T25SZ8
0
0
0
0
1
1
0
1
No. 4B OP2
Item
–
–
–
–
High Dev. 100 Program
–
S. Video
KV-T25SZ8
0
0
0
0
0
0
0
0
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