Sony KV-25K5A Service Manual ▷ View online
25
26
27
28
KEY
TU101
TO H BOARD
CN907
AGC
RESP
SIRCS
SCLI
SDAI
KEY
RESP
SIRCS
7
4
6
5
2
3
4
6
5
CN007
BUFFER
Q013
IF1
BUFFER
Q107
SWF
101
SWF
103
SWF
102
1
2
23
24
14
7
VIF
VIF
SIF
SIF
TU AGC
LIL SW
SWITCH
Q109,110
8
12
16
CN001
AGC
SCLI
SDAI
CS
TO
VM BOARD
CN1705
NS CORRECT
VM OUT
CN505
8
6
4
2
CN406
AUDIO L
AUDIO R
Y/CVBS
C
AUDIO L
AUDIO R
Y/CVBS
C
AF OUT
QSS
DET OUT
STAND SW RF
AGC
AFC
BUFFER
Q101
SYNC SEP
Q005, 004
3
22
17
21
4
9
SCL
SDA
14
15
20
10
16
SWITCH
Q006
13
9
10
15
11
O-KEY/SCART
I-KEY/SCART
I-KEY/SCART 1/2
I MODE 1
I MODE 2
14
12
I-KEY
I-KEY
STBY 5V
19
48
11
6
12
X001
12MHZ
43
1
1
42
41
5
24
36
37
51
8
IC003 RESET
17
30
IC301
Y/C JUNGLE
AMPLIFIER
Q007,008,
009
34
33
32
7
32
31
30
29
35
35
34
52
SWITCH
Q011
43
15
2
4
48
47
18
41
25
28
27
26
6
VIDEO AMP
Q408, 409
2
18
IC201
AUDIO AMP
BUFFER
Q012
3
A6
A2
A1
B1
B3
A3
A19
B8
A8
A7
A11
A15
A16
A20
B2
B6
B15
B20
24
21
22
23
1
2
3
6
1
2
5
4
6
9
10
11
12
14
15
16
17
14
12
1
4
6
19
13
14
3
11
4
1
1
2
1
2
1
3
MAIN RECT
D601
DGC
7
6
5
8
RELAY
RY601
LINE FILTER
T601
5
7
4
3
2
1
5
4
RELAY
SWITCH
Q601
T603
SRT
7
5
8
4
3
1
4
11
12
2
3
16
15
14
13
1
2
IC603
ERROR AMP
PH601
ISOLATOR
D605
+B RECT
D614
RECT
D610
RECT
AUDIO
VCC
+B
+B
IC604
1
3
5VREG
IC605
1
3
9VREG
MUTE SW
Q202
5V REG
H-DRIVE
Q535
H-OUT
Q533
+5V
+9V
LOW B
STBY
+5V
IC608
2
4
1
5
7
5
IC501
V OUTPUT
3
1
VD+
BOOST
REF
OUT
PIN OUT
Q532
6
5
4
3
2
1
1
2
4
D571,
Q571,574
1
1
T801
FBT
FV
ABL
12
3
4
1
5
6
13
8
9
11
10
7
V DY
V- DY+
DY ASSY
V- DY-
H DY
H- DY+
H- DY-
V- DY+
V- DY-
H- DY+
H- DY+
TO C BOARD
CN701
1000V
200V
H1
TO PICTURE
TUBE
TO VM BOARD
CN1809
TO VM BOARD
CN1803
2
3
6
5
+
-
+
-
1
7
IC531
PIN CORRECTION
EW
HP
PROTECT
IN
VP
VD-
3
2
1
4
T531
HDT
IC609
STANDBY
POWER
HD
D
C
T602
D632
RECT
DGC
DGC
DGC
CHECK
DGC CHECK
TO H1
BOARD
CN604
IC001
MICRO CONTROLLER
SCLO
SDAO
SDA
SCL
MON OUT
SCL
SDA
CN201
CN208
CN606
CN603
CN602
J404
J401
CN101
CN504
FBO CP
VCC
D
S
HP
+B
HV
DF
D511
CN503
CN502
0-MSP/ASW
0-V BLK
0- +B DROP
0-VOL
0-SP MUTE
OSD BLK
R
G
B
0-WP
EXT CVBS
0-XRAY PROT
VP
HP
X-IN
MON OUT
X-OUT
D-N-C
0-ROT/VC
RESET
I-PROCDES
0-LED
0-STBY
0-SCART 1/2
0-KEY SCART
I-KEY-SCART
0-BAND-L
0-BAND-L
0-BAND-M
AGC DEFEAT
AGC MON
I-AFT
BE/DK/I
0-RFAGC
0-COIN
INT BLK
INT R2 IN
INT G2 IN
INT B2 IN
SDAO
SCLO
HP
PROTECT
PROTECT
Y1/CVBS IN
CI IN
XTAL 2
XTAL 1
VM OUT
TV/C2 IN
IK IN
B OUT
G OUT
R OUT
HD
VD-
VD+
EW
ABL IN
Y/CVBS IN
EXT BLK
EXT R IN
EXT G IN
EXT B IN
MON OUT
HD
VD-
VD+
EW
ABL
MUTE
NC/IN 2
R OUT/OUT
L OUT/NC
R IN/IN 3
VAR/L
MON OUT
VAR R/SW
VOLUME
STBY
L IN/IN 2
R AUDIO
L AUDIO
HD
L AUDIO
IN
R AUDIO
IN
L AUDIO
OUT
IN
R AUDIO
IN
L AUDIO
OUT
R AUDIO
OUT
OUT
SCL
SDA
SIF
RST
MONO
R1
L1
R2
L2
TVR OUT
TVL OUT
R AUDIO OUT
L AUDIO OUT
L AUDIO IN
L AUDIO IN
MODE
DET V OUT
DET L OUT
MON L OUT
MON R OUT
DET R OUT
MODE
BLUE
GREEN
RED
BLK
YV IN
C IN
AUDIO L IN
AUDIO R IN
V IN
RED
GREEN
BLUE
IK
TO C BOARD
CN703
TO SPEAKERS
TO H1
BOARD
CN908
TO S1
BOARD
CN1101
A ( )
TUNER, POWER SUPPLY HV OUT
AUDIO, MICRO CONTROLLER/TEXT
YC JUNGLE VIF DECODER
IC005 SWITCH SCART
MATRIX
IC101 VIF/SIF
DEMODULATOR
TO
H BOARD
CN906
CN509
IC606
POWER
D513
+15V RECT
D514
-15V RECT
IC004
NVM
-15V
10
2
3
9
5
29" only
29" only
29" only
H- DY-
H- DY-
5-1 BLOCK DIAGRAMS (1)
29
30
31
32
S1 Board
C Board
VM Board
H1 Board
A Board
5-2. CIRCUIT BOARD LOCATION
5-3. SCHEMATIC DIAGRAMS AND
PRINTED WIRING BOARDS
PRINTED WIRING BOARDS
Note :
•
All capacitors are in µF unless otherwise noted.
•
pF : µµF 50WV or less are not indicated except for
electrolytic types.
electrolytic types.
•
Indication of resistance, which does not have one for
rating electrical power, is as follows.
rating electrical power, is as follows.
Pitch : 5mm
Electrical power rating : 1/4W
Electrical power rating : 1/4W
•
Chip resistors are 1/10W
•
All resistors are in ohms.
k = 1000 ohms, M = 1000,000 ohms
k = 1000 ohms, M = 1000,000 ohms
•
: nonflammable resistor.
•
: fusible resistor.
•
: internal component.
•
: panel designation or adjustment for repair.
•
All variable and adjustable resistors have
characteristic curve B, unless otherwise noted.
characteristic curve B, unless otherwise noted.
•
All voltages are in Volts.
•
Readings are taken with a 10Mohm digital mutimeter.
•
Readings are taken with a color bar input signal.
•
Voltage variations may be noted due to normal production
tolerences.
tolerences.
•
: B + bus.
•
: B - bus.
•
: RF signal path.
•
: earth - ground.
•
: earth - chassis.
Reference Information
Note: The components identified by shading
and marked
are critical for safety
Replace only with the part numbers
specified in the parts list.
specified in the parts list.
Note:
Les composants identifies par une trame et
par une marque sont d’une importance
critique pour le securite. Ne les remplacer
que par des pieces de numero specifie.
critique pour le securite. Ne les remplacer
que par des pieces de numero specifie.
RESISTOR
RN
: METAL FILM
RC
: SOLID
FPRD
: NON FLAMMABLE CARBON
FUSE
: NON FLAMMABLE FUSIBLE
RS
: NON FLAMMABLE METAL OXIDE
RB
: NON FLAMMABLE CEMENT
RW
: NON FLAMMABLE WIREWOUND
: ADJUSTMENT RESISTOR
COIL
LF-8L
: MICRO INDUCTOR
CAPACITOR
TA
: TANTALUM
PS
: STYROL
PP
: POLYPROPYLENE
PT
: MYLAR
MPS
: METALIZED POLYESTER
MPP
: METALIZED POLYPROPYLENE
ALB
: BIPOLAR
ALT
: HIGH TEMPERATURE
ALR
: HIGH RIPPLE
£
£
6
5
3
2
-
+
-
+
7
1
+9V
+9V
VM AMP
Q1701, 1702,
1708, 1709
VM AMP
BUFFER
BUFFER
Q1704
BUFFER
Q1840,
1841
6
5
2
-
+
-
+
7
1
IC1902
DF COMPARATOR
3
+9V
15V PULSE
7
6
5
1
V PULSE
NS CORRECT
VM
2
4
6
8
T1901
1
DF
CN1809
TO A BOARD
CN503
TO A BOARD
CN505
3
1
CN1801
QP
QP
VM
NECK ASSY
QP-
QP+
GND
VM
TO ROTATION
COIL
CN1803
IC1901
COMPARATOR
ROT +
ROT -
VM AMP, QP, DYNAMIC FOCUS
ROTATION AMP
VM ( )
CN1705
VM OUT
Q1703,1704
TO A BOARD
CN509
3
2
5
6
+
-
+
-
1
7
IC1801
ROTATION
AMP
G DRIVE, BKG
Q705, 706
B DRIVE, BKG
Q708, 709
R OUT
Q704
G OUT
Q 707
B OUT
Q710
1
H2
C
(RGB OUT)
H1
RV702
H STAT
PICTURE TUBE
6
CN703
R
G
B
CUT OFF
H2
CN701
TO A BOARD
CN502
TO A BOARD
T511 (FBT)
H
R
C
V
C
V
2
+200V
G2
R
G
B
H
V
V
RCV
G2
G
4
G
2
G2
(1000V)
RV701
SCREEN
D711
PROTECT
TO A BOARD
CN504
1
2
3
6
R DRIVE, BKG
Q702, 703
S1
SCL
SDA
SIF
MONO
R1
L1
R2
L2
TVR OUT
TVL OUT
R AUDIO OUT
L AUDIO
OUT
TO A BOARD
CN101
(STEREO DECODER)
IC1101
STEREO DECODER
5
1 2
2 9
3 3
3 4
3 6
3 7
4
SCL
SDA
SIFI
MONO IN
SCART 1 IN
R
R
SCART 1 IN
L
L
SCART 2 IN
R
R
SCART 2 IN
L
L
TVR OUT
TVL OUT
AUDIO R OUT
AUDIO L OUT
4 7
4 8
6 0
6 1
SCART 1 OUT
SCART 1 OUT
MAIN OUT R
MAIN OUT L
TVR OUT
TVL OUT
AUDIO R OUT
AUDIO L OUT
1 7
1 8
XTAI OUT
XTAI IN
CN1101
1
2
5
6
9
10
11
12
14
15
16
17
TO A BOARD
CN406
TO A BOARD
CN208
TO A BOARD
CN007
F U N C T I O N
S W I T C H
S 9 0 0 - S 9 0 2
R E M O T E
C O N T R O L
R E C E I V E R
I C 9 0 0
V I D E O
H E A D P H O N E S
P O W E R
R
L
CN907
KEY
RESP
SIRCS
AUDIO L
OUT
CN908
AUDIO L IN
AUDIO R IN
AUDIO R
OUT
CN906
AUDIO L
AUDIO R
Y/CVBS
C
2
1
5
4
2
4
6
8
CN603
S601
CN604
TO A BOARD
CN606
J900
1
2
4
3
Y/C
CN900
1
2
2
1
2
1
4
6
7
H1( )
AUDIO/VIDEO IN, HEADPHONE
JACK, AUDIO OUT JACK, SIRCS
RECEIVER, FUNCTION SWITCH
RECEIVER, FUNCTION SWITCH
5-1 BLOCK DIAGRAMS (2)
29” only
29” models only
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