Sony XR-4750RDS Service Manual page 40

2-4. SCHEMATIC DIAGRAM – MAIN Board (2/3) –
HP901
(PLAYBACK)
6
L 5
FWD C301
1 1000p
CN351
R
7P
F-R(CH)
1
2 R(CH)-COM
4
R-R(CH)
3
L
GND
4
REV
R-L(CH)
3 5
R L(CH)-COM
2 6
F-L(CH)
7 7
C401
1000p
CN352
13P
MECHANISM BLOCK
+B(8.5V)
(TAPE DET) REEL2
REEL1
(METAL DET)
AUTO.MTL
POS4
ROTARY
GND
SLIDE TAPE
SWITCH OPERATION POS3
POS1
LOADING/TAPE
POS2
OPERATION
LM-
TAKE-UP/SUPPLY LM+
REEL SENSOR
GND
C-MOTOR
M901
(CAPSTAN/REEL)
JC76
0
JC77
0
C365
10
16V
C308
R351
R305 C305 R307
C309 18k
330k 0.22 2.2k
1000p
R303 R308 C310 JC18
15k 10k 2200p
JC17
R304
0
22k
R306
470
C304
0.01
R548
C302 330p R549
JC16 0 R550
R551
C303 C350
330p 22
TAPE EQUALYZER AMP/
16V
DOLBY NR AMP
C403 330p
IC351
CXA2509AQ
JC15 0
C402
C356 R352
330p
0.1 220k
R354 C354
C404 15k 0.01
0.01
R403 R404
15k 22k
R406 R405 R353 R355 D350
JC56
470 330k 4.7k 22 MA111
C357 C353
100 0.47
10V 50V
C351
100p
Q361
2SD1802FAST Q364,365
Q362
REGULATOR CAPSTAN/REEL
REGULATOR CONTROL
JC36
(TAPE ON) MOTOR DRIVE
SWITCH
0
Q364
IC360 2SB1132-R
MM1322XFBE
Q362
XN1A312
GND IN1 -2
R362 R363
4.7 4.7
R361
OUT1 VCC
1k
R365
VS IN2 -1
4.7k
OUT2
GND
C366
10
16V
JC74 JC75
0 0
LOADING/TAPE C367
220
OPERATION MOTOR DRIVE
16V
C408
R408 1
1
10k 50V
50V
JC58
0
C410
2200p
0
R407
2.2k
10k
MD5
10k
MD4
10k
MD2
10k MD1
MD3
C501
100
ON1
10V
ON2
ON3
C502
1
ON4
0
X501
8MHz
R505 1k
C503 X502 32.768kHz
18p
R506 330k
C504
22p
CPU1 C507 0.1
RDS1
CPU2
R511 CPU3
MD14
100k
R507 1k
DATA
CLK R508 2.2k
MD10
CE
MD11
JC54 R509
0 1k
MD13
MD12
R531
100k
R364
10k
RDS2
MD9
JC52
0
Q365
DTC114EKA
5 5
(Page 4)
TU3 TU6
R574
100k
R573
100k
(4750RDS)
JC24
0
R540
100k
DS
KS
DBB
AD0
AD1
R518
SYSTEM CONTROLLER
100k
IC501
MN1884820S4G (4750RDS)
MN1886426S4H (C450RDS)
R570
UNISO
100k
UNISI
UNICLK
R571
R514 100k
1k
LCD1
R572
LCD4
100k
R515
(4750RDS)
1k
R516
1k
LCD2
LCD3
R517 1k
R501
100k
R513
100k
R512 R533
100k 100k
XR-4750RDS/C450RDS
C1
C2
C3
L501
10µH
C4
* R535
22k (4750RDS)
JC81
100k (C450RDS)
0
JC70
C5
0
R535 R537
* 100k
DS
(German)
DBB
C6
KS
R539
(AEP,UK) 10k
R536 R538
100k 100k
(4750RDS)
C7
C8
D504
D506
MA152WA
1SS119
C9
(Page 6)
C505
0.1
C10
C11
C12
C13
C14