Sony KV-AR29T80C Service Manual ▷ View online
– 17 –
KV-AR29T80C/AR29X80C
RM-W104
RM-W104
4-4. FOCUS ADJUSTMENT 1
Note
Focus adjustment should be completed before W/B adjustment.
(1) Receive digital monoscope pattern.
(2) Set DRC-MF to “Progressive” and PICTURE to “Standard”.
(3) Adjust FOCUS VR so that the center of the screen becomes
justfocus.
4-3. G2 (SCREEN) ADJUSTMENT
1. G2 (SCREEN) ADJUSTMENT
1) Set to the PICTURE and BRIGHTNESS to normal and to the
service mode.
2) In put monoscope signal.
3) Set the service data. RGB OFF
4) Connect R, G and B of the C board cathode to the oscillo-
scope.
5) Adjust BRIGHTNESS to obtain the cathode voltage to the
value below.
6) Whilst watching the picture, adjust the screen VR located on
the flyback transformer to the point just before the flyback
return lines disappear (to the point before cut-off)
0 V
168V
± 2V (VDC)
FLYB ACK TRANSFORMER (T502)
FOCUS
SCREEN
G2
4-5. NECK ASSY TWIST ADJUSTMENT
(1) Receive dot/hatch pattern.
(2) Turn FOCUS VR fully counter-clockwise.
(3) Confirm the dot shape at the screen center. (Fig. 4-5)
(4) Resume FOCUS VR.
Note
Note
In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.
OK
Turn NECK ASSY clockwise.
Turn NECK ASSY counter clockwise.
Fig. 4-5
4-6. PICTURE DISTORTION ADJUSTMENT
Note: In this adjustment use the monoscope signal.
Adjust in the service mode “DEF1” and “DEF2”.
1 H-BOW
1 V-AMPL
4 H-PARABOLA
5 H-U.CORNER
6 H-L.CORNER
7 H-TRAPE
2 H-SHIFT
2 V-S.CORR
3 H-WIDTH
3 V-SHIFT
0 H-PARALLEL
0 V-SLOPE
DEF1
DEF2
– 18 –
KV-AR29T80C/AR29X80C
RM-W104
RM-W104
4-7. SUB COLOR ADJUSTMENT
1. Select VIDEO and set Picture according CONDITION
Condition :
PIC
100%
HUE
Center
COL
50%
SHP
50%
BRT
50%
2. Input PAL 100% CB to Video 1.
3. Adjust waveform at CN004 pin 1 (B output) within spec by
service item ‘‘SUB COL’’ and write in the data. As below
-Add 4 step to SUB COL (AV PAL)
V
B2
= V
B3
= V
B4
4. Input RF PAL 100% CB.
5. Adjust waveform at CN004 Pin (B output) within spec by
service item ‘‘ SUB COL’’ and write in the data. As below
-Add 4 step to SUB COL (TV PAL)
V
B2
= V
B3
= V
B4
6. Input NTSC 75% CB at Video 1 and repeat item (3).
-Add 2 step to SUB COL (AV NTSC)
V
B1
= V
B4
7. Input RF NTSC 75% CB and repeat item (5).
-Add 5 step to SUB COL (AV NTSC)
V
B1
= V
B4
8. Select DVD input.
9. Input PAL 100% CB at YP
b
P
r
.
10. Adjust waveform at CN004 Pin (B output) within spec by
service item ‘‘ SUB COL’’ and write in the data. As below
-Add 3 step to SUB COL (DVD PAL)
V
B2
= V
B3
= V
B4
11. Input NTSC 75% CB at YP
b
P
r
.
12. Adjust waveform at CN004 Pin (B output) within spec by
service item ‘‘ SUB COL’’ and write in the data. As below
-Add 5 step to SUB COL (DVD NTSC)
V
B1
= V
B4
V
B1
V
B2
V
B3
V
B4
4-8. SUB HUE ADJUSTMENT
1. Select NTSC 3.58 color bar into Video / TV mode
Condition :
PIC
100%
HUE
Center
COL
50%
SHP
50%
BRT
50%
2. Select Video input.
3. At CN004 pin 1 (B output) waveform (as shown) adjust
service item SUB HUE and write the data.
4. Select TV channel with NTSC 3.58 & repeat (3).
The highest level VB1, VB2, VB3, VB4 should be aligned at
the same line.
The idea difference between VB2 & VB3 is within
±60mV.
V
B1
V
B2
V
B3
60mV
V
B4
4-9. FOCUS ADJUSTMENT 2
Note
Focus adjustment should be completed before W/B adjustment.
(1) Receive digital monoscope pattern.
(2) Set PICTURE MODE to “DYNAMIC”.
(3) Adjust FOCUS VR so that the center of the screen becomes
just focus.
(4) Change the receiving signal to white pattern and blue back.
(5) Confirm MAGENTA RING should not be over the limit sam-
ple. In case MAGENTA RING is over the limit sample,
adjust FOCUS VR to take tracking of MAGENTA RING and
FOCUS.
FLYB ACK TRANSFORMER (T502)
FOCUS
SCREEN
G2
– 19 –
KV-AR29T80C/AR29X80C
RM-W104
RM-W104
SECTION 5
SAFETY RELATED ADJUSTMENTS
[A BOARD]
5-1. CHECKING OCP OPERATION
1) Receive WHITE PATTERN
PICTURE : DYNAMIC
2) Connect 90ohm / 20W RESISTOR R511 between D505 an-
ode and GND.
3) Check if the voltage at D506 cathode goes over 4.6V.
4) Immediately after checking, the resistor has to be discon-
4) Immediately after checking, the resistor has to be discon-
nected.
L505
R511
R512
C508
R514
D505
+B
Add resistor 90
Ω/20W
5-2. CONFIRMATION OF V-PROTECTOR
1) Short D557.
2) Check if the voltage at D551 cathode goes over 4.6V.
3) Immediately after checking, the resistor has to be discon-
2) Check if the voltage at D551 cathode goes over 4.6V.
3) Immediately after checking, the resistor has to be discon-
nected.
5-3. CHECKING POWER SUPPLY VOLTAGES
Feed the mono-scope or color bar siganal and confirm the
following voltages.
following voltages.
1) +B line voltage(135V)
Adjust R654.
Measure between C654 +ve & GND.
Specification: 135V
Measure between C654 +ve & GND.
Specification: 135V
± 1.0 V
2) 12V line voltage
Measure between C661 +ve & GND.
Specification: 13.5 V
Specification: 13.5 V
± 2.0 V
3) 8V line voltage
C662 +ve & GND.
Specification: 8.0V
Specification: 8.0V
± 0.5 V
4) 5V line voltage
C664 +ve & GND.
Specification: 5.05V
Specification: 5.05V
± 0.5 V
5) STBY-5V line voltage
C652 +ve & GND.
Specification: 5.0V
Specification: 5.0V
± 1.0 V
6) 3.3V line voltage
C657 +ve & GND.
Specification: 3.3V
Specification: 3.3V
± 0.15 V
7) FBT + 15V LINE
Measure line voltage between +C557 & -C557 (GND)
Specification: 13.3V
Specification: 13.3V
± 0.5 V
8) FBT - 15V LINE
Measure line voltage between -C558 & +C558 (GND)
Specification: -14.9V
Specification: -14.9V
± 0.6 V
KV-AR29T80C/AR29X80C
RM-W104
RM-W104
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM (1)
SPEAKER
(L-CH)
SPEAKER
(R-CH)
1
2
T
9
9
9
11
14
15
12
14
15
12
4
5
2
1
5
2
1
IC920
AUDIO INPUT SELECT
Q429
MUTE DRIVE
Q429
INITIAL
MUTE DRIVE
Q923, 924
MUTE
Q922, D934
OR GATE
Q427
R
L
(MONO)
L1
L2
L3
L
L2
L3
L
R1
R2
R3
R
R2
R3
R
V1-L
V2-L
V3-L
FM-L/R
V2-L
V3-L
FM-L/R
V1-R
V2-R
V3-R
V2-R
V3-R
V1-V
V2-Y/V
J921
CN920
V2-C
C
Y
V
L
R
V2-L
V1-L
V2-R
V1-R
CN923
13
3
9
10
L OUT
R OUT
AV1
AV2
AV2
4
5
2
1
5
2
1
11
14
15
12
14
15
12
IC921
VIDEO INPUT SELECT
V1
V2/Y
V3
V2/Y
V3
V1-V
V2-V/Y
V3-V
V2-V/Y
V3-V
V2-C
13
3
9
10
V OUT
C OUT
AV1
AV2
AV2
AV1
AV2
AV2
AV1
AV2
AV2
SDA
SDL
SDL
MUTE
+12V
SP-MUTE
MUTE
TO
A BOARD
CN911
IC401
EQ AMP/EVR
LIN
3
RIN
SCL
SDA
5
16
17
LOUT 18
ROUT 15
IC402
POWER AMP
LIN
2
RIN
5
LOUT 12
7
ROUT
10
VCC
PS400
PS402
+22V
+12V
+8V
+8V
11
8
STBMUTE
MUTE
3
4
1
2
1
2
3
4
5
CVIN
GND
LIN
GND
RIN
CN922
11
9
7
5
3
1
CVBS/Y
CHROMA
YUV_V
YUV_U
YUV_Y
V-OUT
YUV_V
YUV_U
YUV_Y
V-OUT
V3-V
V3-L
V3-R
R
L
(MONO)
V
L
R
R
L
(MONO)
V
L
R
YUV-Y
YUV-U
YUV-V
Y
CB
CR
Y
CB
CR
FM_L/R
TO
H BOARD
CN901
A
B
TO
A BOARD
CN411
CN403
C
CN401
1
2
SPL (+)
SPL (-)
4
3
SPR (+)
SPR (-)
5
6
W (+)
W (-)
U
(VIDEO/AUDIO INPUT, AUDIO AMP)
Q420
MUTE
Q421
MUTE
SP MUTE
1
3
4
5
6
8
SDA
SCL
AV1
AV2
FM
MUTE
TO
A BOARD
CN412
CN406
D
1
2
3
4
5
6
8V
12V
22V
22V
GND
GND
+8V
+12V
+22V
SDA
SCL
AV1
AV2
MUTE
IC930
VIDEO AMP
OUT
IN1
2
6
NC
– 21 –
– 22 –
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