Technics ST-HD501

Buffer
amp.
M5218AFPE3
IC301
BUFFER AMP
+B(13V)
1
CS
8
JK402
2
3
4
5
6
7
9
12
13
14
15
16
17
18
CD REQ
M.GND
+B(10V)
D.GND
SCLK
DATA
19
11
10
TAPE REQ
SYNC
Rch IN
Lch IN
Rch OUT
Lch OUT
Rch IN
A.GND
Lch IN
CLK SPD
+B3
SBUSY2
SSTB2
SCK21
SIN2
SOUT2
Interface
Q541,542
SRDY2
INT5
Rch
NC
TAPE PLAY L
CD PLAY L
CLKOUT
Q543
Interface
Rch
Rch
AN4
POWER
Lch OUT1
MUTE
8
JK401
2
3
4
5
6
7
9
12
13
14
16
17
18
A.GND
POWER
+B(13V)
LED CNT
CT
19
11
10
D.GND
-B(13V)
+B(15V)
+B(10V)
KEY SE
JOG A
JOG B
+B(5.6V)
-B(-30V)
FL1
FL2
20 SYNC
15
Rch
-B1
Regulator
Q402
+B3
AN1
AN3
AN2
+B4
-VP
FL1
FL2
INT5
Power
supply
+B5
Power
supply
cont.
Q405
Q406
SCLKK2
D404
Rch OUT
To AMPLIFIER
BLOCK
DIAGRAM
TP304
(D.GND)
TP305
+B1 Regulator
Q407
+B2
Q403
Regulator
CT
To CD PLAYER/
CASSETTE
DECK BLOCK
DIAGRAM
TP302
(A.GND)
CT
TP303 (CT)
+B6-B1
Regulator
+B6
Q401
TP311
TP310
TP309
TP306
TP308
TP307
Notes)
Signal line : FM signal : AM signal
: FM OSC signal : AM OSC signal
( ) indicates pin No. of right channel.