Sony KP-48PS2 / KP-61PS2 Service Manual ▷ View online
KP-48PS2/61PS2
RM-903
– 37 –
BLOCK DIAGRAM (8)
CN4701(1/2)
QSS-1
B13
MAIN R IN
A2
AM1
A14
A RESET
A7
AM2
A16
+5V
B3
TO BLOCK
DIAGRAM(2)
A BOARD
CN1901
SCL
A5
SDA
B5
QSS-2
B15
+9V
B2
MAIN L IN
A1
S
(AUDIO PROCESS)
Q4701
BUFF
Q4702
BUFF
TRAP
(6.5MHz)
56 AV MAIN L IN
57
37
36
AV MAIN R IN
61 IF IN1
Q4703
BIAS
69 IF IN2
IC4702
SOUND PROCESSOR
IC4704
FM DEMODULATOR
IC4705
I2C SW
60 MONO IN(AM)
72 XTAL OUT
71 XTAL IN
21 POWER ON RESET
2
SCL
3
SCA
X4701
18.432MHz
TV OUT L
TV OUT R
+9V
-
+
6
5
7
4
Q4707
MUTE SW
DA3
3
DA4
5
DA2
6
DA1
7
DA0
-
+
9
10
8
IC4703(1/2)
OUTPUT AMP
IC4703(2/2)
OUTPUT AMP
CN4701(2/2)
R-TV
A4
L-OUT
B10
R-OUT
A11
SW2
B8
SUB R
A9
TO BLOCK
DIAGRAM(2)
A BOARD
CN1901
L-TV
A3
15 SCL
14
9
SDA
SW2
5
MUTE
13
12
SW
3
FM SIF
1
AM IN
AF OUT
+9V
+5V
Q4706
BUFF
BPF
(5.5MHz)
Q4710
BPF
(6.0MHz)
Q4709
BPF
(6.5MHz)
Q4708
H1
H2
28
27
Q4712
LPF
Q4711
LPF
SPEAKER
OUT L
SPEAKER
OUT R
KP-48PS2/61PS2
RM-903
– 38 –
T6002
LFT
T6001
LFT
CN6004
AC(W)
1
AC IN
220-240V
50Hz
AC(L)
2
CN6007
AC(L)OUT
1
AC(N)OUT
5
CN6006
AC(N)IN
4
AC(L)IN
1
PROGR +
PROGR -
+
-
1
2
4
3
2
1
3
4
T6003
PFT
1
11
IC6004
SWITCHING IC
1
19
15
7
17
2
16
18
14
VD
VC2
VB
VC1
VS
RT
COM
VG(H)
VG(L)
3
14
D6015
RECT
RY6000
D6100,D6106
RECT
D6104
RECT
STBY+5V
IC6007
MAIN SW
Q6004
MCM SW
Q6100,6102
PROTECT
T6100
SBT
5
9
6
1
IC6302
STBY 5V REG
5
4
3
4
8
IN
OUT
IC6304
REF VOLTAGE
3
1
2
A
K
REF
Q6304
VOLTAGE DET
Q6301,6302
PROTECT
STBY +5V
IC6002
FEED BACK
IC6301
+B REG
1
4
D6304
RECT
D6300
RECT
T6005
PIT
13
15
7
9
10
12
16
18
1
3
D6308
RECT
D6302
RECT
D6309
RECT
D6310
RECT
D6301
RECT
+
T6004
PIT AUDIO
2
8
IC6303
OVP
3
1
4
12
REF
K
G
(POWER SUPPLY)
1
CN6302
2
-22V
3
15V
4
-15V
9
+6.5V
6
PROT
5
P.CONT
+22V
TO BLOCK DIAGRAM(2)
A BOARD CN1605
TO BLOCK DIAGRAM(6)
D BOARD CN5013
5
CN6300
2
OVP
3
OCP
1
AC ON/OFF
STBY +5V
TO BLOCK DIAGRAM(2)
A BOARD CN1606
1
CN6301
2
-17V
+17V
TO BLOCK DIAGRAM(2)
A BOARD CN1603
3
CN6303
9
+10.5V
+6.5V
4
+6.5V
5
+6.5V
10
+10.5V
TO BLOCK DIAGRAM(6)
D BOARD CN5002
1
CN6304
+135V
F6001
5A
Q6303
OCP
K
Y
L
Z
G
CN3201
KEY2
2
CN3101
KEY2
2
CN3202
HP L OUT
4
TO BLOCK DIAGRAM(2)
A BOARD CN1301
HP R OUT
1
CN3103
CN3102
AC(N)IN
4
AC(L)IN
1
CN3104
AC(L)OUT
1
AC(N)OUT
5
S3205
J3201
S3101
S3102
S3103
D3001
(STANDBY)
S3106
S3104
S3105
STBY +5V
+5V
TO BLOCK
DIAGRAM(2)
A BOARD
CN1302
8
5
KEY1
10
+5V
4
STBY +5V
6
KEY2
2
R.LED
SIRCS
OUT
IC3101
IR RECEIVER
Q3101
LED SW
H1
(USER CONTROL,MAIN SW)
H2
HP OUT,
USER CONTROL
USER CONTROL
I
B
HEAD
PHONE
BLOCK DIAGRAM (9)
– 40 –
KP-48PS2/61PS2
RM-903
Reference information
RESISTOR
: RN
METAL FILM
: RC
SOLID
: FPRD
NONFLAMMABLE CARBON
: FUSE
NONFLAMMABLE FUSIBLE
: RW
NONFLAMMABLE WIREWOUND
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
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
6-3. CIRCUIT BOARDS LOCATION
Note:
• The parts marked “#” on schematic diagrams are not mounted.
• All capacitors are in
µ
F unless otherwise noted. (pF:
µµ
F)
Capacitors without voltage indication are all 50 V.
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP : 1/10 W)
• All resistors are in ohms.
•
: nonflammable resistor.
•
5
: fusible resistor.
•
: internal component.
•
: panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
•
: earth-ground.
•
: earth-chassis.
• All voltages are in V.
• Readings are taken with a 10 M
Ω
digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerances.
•
*
: Can not be measured.
• NO MARK: Common
• <
> : SECAM
• (
) : NTSC 3.58 MHz
• Circled numbers are waveform references.
•
: B + bus.
•
: B – bus.
•
F
: Signal path.
• The components identified by
[
in this basic schematic diagram
have been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation.
Should replacement be required, replace only with the value
originally used.
• When replacing components identified by
]
, make the
necessary adjustments indicated. (See page 15)
• When replacing the part in below table, be sure to perform the
related adjustment.
6-4. SCHEMATIC DIAGRAMS AND
PRINTED WIRING BOARDS
V
V
•
Divided schematic diagram
Schematic diagrams of A, BD, D, G, J and M boards are divided
into several pieces. Information to where the line is to be connected
is printed at the end of each line.
For example, [ TO A1/3,A2/3_1 ] means the line is connected to
Ref. No. 1 of A (1/3) and A (2/3) schematic diagrams.
TO A1/3,A2/3_1
Ref. No.
Name of divided schematic diagram
G
D
S
B1 E1
C2
B2 C1
E2
2
3
4
5
6
7
8
9
0
qa
qs
qf
qh
qj
qk
–
1
G
D
S
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
ql
B1 E1
E2
C1(B2)
C2
w;
B1
E2
C1
C2
ws
wd
(B2)
E1
(B2)
E1
E2
B1
C2
C1
wa
B1
E1
C2
B2
C1
E2
G
S
S
D
G
D
B1
E1
C2
B2
C1
E2
B1
E2
C2
C1(B2)
E2
B1
C1
C2
E1(B2)
C2
B1
C1
E2
E1(B2)
C2
B1
C1
E2
B2
E1
C2
Ver.1.5
Transistor
(FET)
(FET)
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Source
Source
Anode
Anode
(NC)
(NC)
Cathode
Anode
Cathode
Common
Cathode
Cathode
Common
Cathode
Cathode
Common
Common
Common
Common
Cathode
Anode
Base
Emitter
Collector
Base
Emitter
Collector
Drain
Gate
Gate
Drain
Device
Printed symbol
Terminal name
Circuit
Terminal name of semiconductors in silk screen
printed circuit ( )
Anode
Anode
Anode
Cathode
Anode
Anode
Cathode
qd
Transistor
(FET)
(FET)
Transistor
(FET)
(FET)
qg
Emitter
Collector
Base
Transistor
Source
Gate
Drain
Cathode
Anode
Anode
Cathode
Anode
Anode
*
H3
ZG
ZR
CR
M
E
S
J
A
B3
D
BD
DS
G
CB
CG
ZB
H2
H1
Part Replaced (
]
)
C5123, C5127, C5130, C5143, D5115,
D5204, Q5104, R5136, R5138, R5140,
R9901, T5102, T5103 (FBT), T5104,
D Board
Adjustment (
[
)
R9901
(HV Hold-Down)
Note: The components identified by shading and mark
0
are critical for safety. Replace only with part
number specified.
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