Sony KP-48V75 / KP-53V75 / KP-61V75 Service Manual ▷ View online
– 49 –
KP-48V75/53V75/61V75
RM-Y903
RM-Y903
RM-Y903
SECTION 5
CIRCUIT ADJUSTMENTS
5-4. SUB-HUE AND SUB-COLOR ADJUSTMENT
(SHUE, SCOL)
1. Receive the 75% white color bars pattern signal.
2. PICTURE
2. PICTURE
: maximum
COLOR
: center
BRIGHTNESS : center
TRINITONE
TRINITONE
: medium
3. Set to service mode.
4. Connect an oscilloscope between pin
4. Connect an oscilloscope between pin
7 of CN004 (A Board)
connecter and ground.
5. Select “ SHUE ” and “ SCOL ”, and adjust them to have
VB1 = VB4 and VB2 = VB3 in the wave form levels.
6. Raise “ SCOL ” data 0 steps higher.
7. Write the data into memory.
7. Write the data into memory.
MUTING
n ENTER
5-1. RF AGC
1. Input the 75% white color bars pattern signal.
2. Adjust AGC VR of TU1101 so that snow noise, and
2. Adjust AGC VR of TU1101 so that snow noise, and
crossmodulation disapper from the picture.
3. Verify picture quality on each channel.
5-2. BAR DISPLAY ADJUSTMENT (DISP)
1. Receive the cross-hatch signal.
2. Set to Service mode.
3. Select “ DISP ”, and adjust so that the blank spaces on the
2. Set to Service mode.
3. Select “ DISP ”, and adjust so that the blank spaces on the
both sides of picture bar become equal.
4. Write the data into memory.
MUTING
n ENTER
A
B
A=B
Fig. 5-1
5-3. SUB CONTRAST ADJUSTMENT (SCON)
1. Receive the 75% white color bars pattern signal.
2. PICTURE
2. PICTURE
: maximum
COLOR
: minimum
BRIGHTNESS : center
TRINITONE
TRINITONE
: medium
RON---1 GON---0 BON---0
3. Set to service mode.
4. Connect an oscilloscope between pin
4. Connect an oscilloscope between pin
6 of CN004 (A Board)
and ground.
5. Select “ SCON ”, and adjust so that the wave form level is
1.75
±
0.05Vp-p.
6. Write the data into memory.
MUTING
n ENTER
White
1.75
±
0.05Vp-p
Black
Fig. 5-2
VB1 VB2 VB3 VB4
Fig. 5-3
5-5. DVD INPUT SUB HUE, SUB COLOR ADJUSTMENT
(UVSH, UVSC)
1. Select video 4 input.
2. PICTURE
2. PICTURE
: maximum
COLOR
: center
BRIGHTNESS : center
TRINITONE
TRINITONE
: medium
3. Set to service mode.
4. Connect an oscilloscope between pin
4. Connect an oscilloscope between pin
5 of CN303 (A Board)
and ground.
5. Select “ UVSH ” and “ UVSC ” , adjust them to have VB1 =
VB4 and VB2 = VB3 in the wave form levels.
6. Write the data into memory.
MUTING
n ENTER
Fig. 5-4
VB1 VB2 VB3 VB4
– 50 –
KP-48V75/53V75/61V75
RM-Y903
RM-Y903
RM-Y903
5-7. P IN P SUB HUE, SUB COLOR ADJUSTMENT
(MSHU, SSHU, MSCL, SSCL)
1. Receive the 75% white color bars pattern signal.
2. PICTURE
2. PICTURE
: maximum
COLOR
: center
TRINITONE
: medium
3. Set to P & P (
) mode, and to service mode.
4. Connect an oscilloscope between pin
5 of CN305 (A Board)
and ground.
5. Select “ MSHU ” , “ SSHU ” , “ MSCL ” and “ SSCL”, and
make adjustment sub hue and sub color so that the wave form
shows X1 = Y1 and X2 = Y2.
shows X1 = Y1 and X2 = Y2.
6. Raise “ UVSC ” data 8 steps higher.
7. Write the data into memory.
7. Write the data into memory.
MUTING
n ENTER
X2
Y2
PY2
PY1
X1
Y1
X1 = Y1
X2 = Y2
PY1 = PY2 = 750
X2 = Y2
PY1 = PY2 = 750
±
30mV.
5-6. P IN P SUB CONTRAST ADJUSTMENT
(MSCN, SCON)
1. Receive the 75% white color bars pattern signal.
2. PICTURE
2. PICTURE
: maximum
COLOR
: minimum
BRIGHTNESS : center
TRINITONE
TRINITONE
: medium
3. Set to P & P (
) mode, and to service mode.
4. Connect an oscilloscope between pin
4 of CN305 (A Board)
and ground.
5. Open pin
7 of CN301 (A Board).
6. Select “ MSCN ” and “ SCON ”, adjust them to have PY1 =
PY2 ( 470
±
20mV) in the wave form levels.
7. Write the data into memory.
MUTING
n ENTER
PY1 = PY2 = 470
±
20mV.
PY1
(FROM PEDESTAL
TO PEEK)
(FROM PEDESTAL
TO PEEK)
PY2
Fig. 5-5
Fig. 5-6
– 54 –
– 53 –
– 52 –
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM (1)
DET OUT2
L OUT
R OUT
MUTE
ST LED
ENABLE
F MONO
MODE
AF OUT
DET OUT
DATA
CLOCK
AGC MUTE
Q1101
H SEP
BFFER
Q220
3
5
1
2
39
37
IC201
AV SW
TO IC202
TO IC202
1
2
3
4
V
L
R
S-VIDEO
V
L
R
VIDEO1
INPUT
10
11
3
21
31
17
18
58
57
56
54
8
1
24
23
22
4
2
7
X002
12MHz
6
5
IC007
EEP ROM
I 2HSYNC
I STEREO
O LAT
I AFT
MONO
SAP
I SYNC
O DAT
O CLK
O 2LAT
I AFT
O 2MUTE
O OSC
I OSC
O ANTAUX
O 2ANTU
IO BCLKN
15
5
4
6
60
59
50
20
64
62
14
13
41
40
39
38
43
42
32
28
IC001
TUNING PROCESSOR
I VIN
O MUTE
O OSBLK
O DISPYM
OR
OG
OB
OI
I HP
I VP
RELAY
O SPKMT
KEY
I POWER
O TIMLD
O STLED
I RMCON
O SIRCS
RESET
RESET
BUFFER
Q013
VIDEO
Y
C
MUTE
Q218
BUFFER
Q008
6
VIDEO
CN304(1/2)
CN305(1/2)
C
19
20
2
4
SCL
SDA
CN304(2/2)
CN305(2/2)
11
12
10
9
7
8
4
5
44
43
14
15
16
17
18
29
30
38
26
36
35
45
25
37
24
22
20
IC301
YCU
BUFFER
Q303-305
Q308
ERY IN
EBY IN
EY IN
YUV SW
APCP IN
SCL
SDA
Y IN
C IN
HS IN
VS IN
YM
YS
R IN
G IN
B IN
R OUT
G OUT
B OUT
L2F IN
IK IN
VM
HD OUT
E/W DRIVE
ABL IN
AFC FIL
V DRIVE +
V DRIVE -
31
2
15
13
23
10
OUT L
OUT R
IN L
IN R
SCL
SDA
IC401
TONE CONTROL
SCL
SDA
SYNC BUFFER
5
6
2
1
8
10
IC403
3
5
1
7
IC402
AUDIO BUFFER
BUFFER
BUFFER
BUFFER
Q306
Q302
Q301
COG AMP
Q311,312,313
VM BUFFER
Q307
AFC AMP
Q314
10
11
5
4
9
6
1
7
3
5
IC1501
V OUT
3
1
V RET
V DEF
CN1501
TO Z BOARD
CN1403
1
5
7
3
HD
PIN
ABL
HP
CN301
TO G BOARD
CN506
9
7
5
1
1
3
5
R
G
B
IK
135V
9V
VM
TO CR BOARD
CN703
TO Z BOARD
CN1431
V SEP
Q1501
VP IN
Q007
44
24
21
30
31
60
59
BUFFER
Q001
3
2
5
7
6
8
10
2
BV WAVE
RV WAVE
P CLK
R DAT
R MUTE
R LEA
VP
RELAY
CN003
CN1601
TO G BOARD
CN804
K
TO G BOARD
CN652
35
34
36
4
IC004
RESET
IC002
REGI UCOM
RESET
XTAL
EXTAL
X001
4MGW
BV
RV
SCK/PB1
SDA/PD2
PC3/MUTE
PCO/CEB
VP
1
2
4
3
L
E
R
E
L
R
SPEAKER
J205
L
R
AUDIO OUT
(VARI/FIX)
A
CN303
CN302
36
IC1502
V ZOOMING AMP
AUDIO OUT
IC003
IO BDATA
O AGCMT
RF AGC
TU1101
F
G
H
I
4
6
5
7
3
EY
EV
EU
EYS
Y IN
C IN
E
D
TO PD BOARD
CN3401(2/2)
TO PD BOARD
CN3051(2/2)
46
SDA
SCL
BGP
Q017 Q016 Q015
SW
SW
SW
17
16
2
1
10
9
11
MAIN Y
MAIN C
SUB Y
SUB C
MAIN HP
MAIN VP
BGP
TO PD BOARD
CN3051(1/2)
TO PD BOARD
CN3401(1/2)
B
58
53
56
49
51
45
43
SY OUT1
SY IN1
SC IN1
SV OUT1
SC OUT1
Y IN2
C IN2
1
3
4
CM201
GLASS COMB
Y OUT2
C OUT2
41
38
40
52
54
10
12
14
8
9
11
V OUT2
L OUT
R OUT
ML OUT1
MR OUT1
SSW2
33
34
SRS SW2
SRS SW1
CN401
+
-
TB201
CENTER
15V
RY402
15V
RY401
RELAY
DRIVE
RELAY
DRIVE
Q217
MUTE
Q216
MUTE
Q401
Q407
3
5
1
7
AUDIO AMP
IC404
11
MUTE
MUTE
D412
D408
D406
STBY12V
Q405,406
ON/OFF MUTE
SAVA OUT
19
61
63
D241
MUTE
Q404
ON/OFF
15V
VIDEO BUFFER
Q201,209
AUDIO BUFFER
Q223
AUDIO BUFFER
Q224
Q207
MUTE
Q206
MUTE
Q209
MUTE
MUTE SW
Q215
D213
D212
J204
J203
V
L
R
V
L
R
TV OUT
MONITOR
OUT
3
5
1
7
AUDIO BUFFER
IC202
MUTE
Q202
MUTE
Q208
Q202,203
BUFFER
MUTE
Q205
FROM
TU1101
29
30
27
28
26
25
24
23
21
20
19
18
IC2201
SRS
L IN
R IN
PN OUT
PN IN
S OUT
S IN
C OUT
C IN
L OUT
R OUT
MODE1
MODE2
TV V
TV L
TV R
63
62
64
IN
MAIN TV
Y1
C1
SSW1
V1
L1
R1
7
4
Y2
C2
V2
L2
R2
Y4
L4
R4
VIDEO1
IN
DVD
IN
23
24
25
60
59
61
V6
L6
R6
MUTE
AF OUT
ENABLE
CLOCK
DATA
DEM OUT
DET OUT
TU1102
BUFFER
Q226
BUFFER
Q004
17
19
21
15
16
18
33
34
Y3
C3
SSW3
V3
L3
R3
SCL
SDA
SUB TV
IN
VIDEO3
IN
SCL
SDA
J201
TO Q202
1
2
3
4
V
L
R
S-VIDEO
V
L
R
INPUT
VIDEO3
J202
ANT SW
Q009
ANT SW
Q006
36
35
37
9
M-BUS1
M-BUS3
M-BUS4
STATUS
TV BLK
SPK SW
V4MUTE
6
7
8
4
2
11
10
9
13
V1-S
V3-S
V4-S
STATUS
SIRCS
V3
V4
TV OUT
V1
IC2101
SIRCS I/O
SIRCS MIX
Q2101,2102,2104
1
3
ANT SW2
ANT SW1
TO
ANT SW
CN001
3
4
6
8
10
1
3
4
6
10
8
FR Y OUT
FR C OUT
FR V OUT
FR L OUT
FR R OUT
1
2
3
4
V
L
R
S-VIDEO
V
L
R
INPUT
1
VIDEO2
J1301
6
5
3
7
8
6
5
3
7
8
POWER
KEY
SIRCS
ST LED
TIMER LED
CN1302
CN1301
CN1101
CN002
1
IC1301
REMOTE SENSOR
S1301-1307
S1307
D1304
D1305
STBY5V
HA
VIDEO 2 INPUT,SIRCS,
FUNCTION KEY
FRONT SW
AUDIO OUT,V OUT,
TUNER,AV-IN/OUT
TUNER,AV-IN/OUT
1
2
3
5
7
1
2
3
5
7
SLINK1
SLINK3
SLINK4
SLINK OUT
SIRCS OUT
CN4001
CN2101
J4005
J4004
J4003
J4002
J4001
SIRCS OUT
S-LINK IN1
SIRCS OUT
SIRCS OUT
S-LINK IN3
S-LINK IN4
S-LINK OUT
SIRCS OUT
1
5
3
7
8
1
5
3
7
8
DVD Y
DVD V
DVD U
DVD L
DVD R
CN4002
CN201
Y
V
U
L
R
VIDEO 4
(DVD)
J4006
VIDEO 4 INPUT,
SIRCS IN/OUT
U
AMP
Q204,210
AMP
AMP
Q212,214
Q211,213
14
12
13
CN305(2/2)
DVD Y
DVD V
DVD U
A
TO PD BOARD
CN3051(2/2)
B-SS558.<U..>-B/D-1
J
Q402
MUTE
Q408
Q409
Q2111,2107
Y/C/J,AV SWITCH,
D008
SW
Q2103,2106,2109
TV OUT
IN
VIDEO2
Q005
SIRCS IN
– 56 –
– 57 –
– 55 –
BLOCK DIAGRAM (2)
6
CN3401(1/2)
V IN
V BUFFER
Q3416
FL3403
BUFFER
Q3413
SYNC SEP
BUFFER
Q3410
Q3402,3405-3407
17
16
2
1
10
9
11
MAIN Y
MAIN C
SUB Y
SUB C
MAIN HP
MAIN VP
BGP
CN3051(1/2)
MY BUFFER
Q3001
MC BUFFER
Q3006
34
38
39
32
36
37
1
26
19
20
18
X3001
500KHz
X3002
3.58MHz
SDA
SCL
Y OUT
V OUT
U OUT
CVBS/Y IN
V SYNC
H SYNC
C IN
SDA
SCL
CERA
XNTSC
2
1
5
3
12
13
11
10
15
11
13
12
IC3002
YVU SWITCH
IC3001
MAIN DECODER
8
6
7
14
RY IN
RV IN
RU IN
RY OUT
RV OUT
RU OUT
VTIM
14
12
13
DVD Y
DVD V
DVD U
C
FROM A(1/2) BOARD
CN305
FROM U BOARD
CN4002
FROM A(1/2) BOARD
B
CN304
M-HP
Q3217
Q3201
Q3202
BUFFER
Q3214
BUFFER
Q3203
34
38
39
32
36
37
1
26
500KHz
3.58MHz
SDA
SCL
X3201
X3202
18
20
19
2
1
5
3
12
13
11
14
10
15
YVU SWITCH
Q3211
Y OUT
V OUT
U OUT
CVBS/Y IN
V SYNC
H SYNC
C IN
SDA
SCL
CERA
XNTSC
IC3202
SUB DECODER
IC3205
11
13
12
RY IN
RV IN
RU IN
8
6
7
14
RY OUT
RV OUT
RU OUT
VTIM
15
HTIM
A
B
Y AMP
Q3003-3005
SUB Y BUFFER
SUB C BUFFER
10
8
6
17
60
61
95
2
94
IC3203
P&P CONTROLLER
MY
MV
MU
MV SYNC
SCL
SDA
DPH SYNC
MPH SYNC
DPV SYNC
C
Y AMP
Q3204-3206
2
1
12
13
11
14
10
15
IC3204
SIGNAL SWITCH
71
79
64
SY
SPH SYNC
SV SYNC
49
48
47
40
31
14
27
13
2
7
DT
SC
WE
CAS
RAS
DT
SC
WE
CAS
RAS
8
11
31
34
--
-
32
39
-
DAO0
DAO7
--
-
--
-
-
50
58
AD0
AD8
23
30
-
DAI0
DAI7
15
19
22
25
3
6
36
39
IC3201
2M-VRAM
A0
A8
SIO1
SIO8
WIO1
WIO8
Q3008,3009
LEVEL SHIFT
1
2
3
86
88
90
93
6
23
22
21
19
5
Y BUFFER
Q3208
V BUFFER
Q3209
U BUFFER
Q3210
YS BUFFER
Q3207
DY
DV
DU
DFB
PY
P R-Y
P B-Y
YUV SW
DVD Y
DVD R-Y
DVD B-Y
TV IN
CLAMP
D3205
D3201
D3202
8
9
10
12
13
18
16
17
IC3003
YUV CONTROLER
Y OUT
RY OUT
BY OUT
TV OUT
DLY SW
Y SW
COLOR
HUE
Q3007
INV
1
5
6
2
4
3
10
D3003
MAIN Y SW
COL
HUE
FULL DVD
DVD SW
DVD SW2
H LOCK
9
15
14
59
60
57
76
IC3004
D/A CONVERTER
RESET
SCL
SDA
SCL
SDA
30
31
X3401
20MHz
CSI
RSTB
SCL
SDA
XI
XO
-
9
12
99
--
19
22
16
26
-
2
5
7
10
31
34
36
39
---
28
13
11
98
12
10
13
14
27
28
29
IC3402
4MB EDO
A0
A8
IDO0
IDO16
WE
RAS
OE
V CAS
L CAS
M WE
M RAS
M OE
M CAS
MIO0
MIO15
MA0
MA8
16
-
67
74
--
22
20
17
13
6
25
24
4
IC3403
ADC
V IN
CLK
DB1
DB8
DYCO2
DYCO9
ALTF
STO
84
83
IC3404
3D COMB
AYO
ACO
PD
Q3404
Q3403
FL3402
FL3401
Y AMP
C AMP
Q3408,3412,3415
Q3409,3411,3414
2
4
Y OUT
C OUT
TV BUFFER
Q3010
SCL
SDA
4
6
5
7
3
20
19
EY
EV
EU
EYS
TV OUT
SCL
SDA
CN3051(2/2)
CN3401(2/2)
E
B
TO A(2/2) BOARD
CN305
CN304
TO A(2/2) BOARD
B-SS558.<U..>-B/B-3
Y BUFFER
C BUFFER
PCL
(DECODER,3D COMB FILTER,P&P CONTROLLER)
-
A
B
C
SDA
SCL
73
75
SV
SU
4
9
9
4
Y BUFFER
A
BUFFER
Q3002
14
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