19.6. (F) Deck Circuit
TO
MAIN CIRCUIT
(CN2803) ON
SCHEMATIC
DIAGRAM-2
TO
DECK MECHANISM (CS971)
ON SCHEMATIC DIAGRAM-7
SA-AK750PL DECK CIRCUIT
SCHEMATIC DIAGRAM - 10
DECK CIRCUIT
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
D
E
F
H
G
C
1
4
2
3
5
1
4
2
3
5
16
17
18
19
20
21
1
2
3
4
5
6
14
12
10
8
7
9
11
13
15
9
8
7
6
5
4
3
2
1
VREF+ VREF-
PHOT
O
PL
VCC
GND2
PHOTO
+5V
+5V
9V_GND
VREF-
VREF+
DMT
REC
REC Rin
REC Lin
AF_GND
AF_GND
PB Rout
PB Lout
9V (DV9)
DECK_AD2
MOTOR_9V
MOTOR_GND
DECK_AD1
MOTOR_H
PL
CP1902
Q1303
B1GBCFGH0001
SWITCH
R1314
1K
RECH
Q1316
2SD09650RA
SWITCH
Q1314
B1GDCFGH0002
SWITCH
R1341
470
R1374
470
Q1314
R1342
47K
R1343
3.3K
R1345
1K
Q1315
R1344
27K
C1326 16V10
Q1315
B1ACKD000006
SWITCH
PHOTO
RECH
VREF-
VREF+
DECK_AD2
DECK_AD1
PHOTO
R1402
270K
R1405
10K
R1404
22K
R1401
12K
R1371
22K
R1318
10K
R1403
10K
VREF-
VREF+
DECK_AD1
DECK_AD2
TPS
Q1304
B1GDCFGH0002
REC:H
Q1302
B1GDCFJJ0002
DECK MUTTING CONTROL
R1313
10K
C1310
50V0.1
R1210
33K
R1110
33K
C1109
50V3.3
C1209
50V3.3
R1309
470
R1105
2.2K
C1110
6800P
R1106
100K
R1107
1K
Q1101
R1205
2.2K
C1210
6800P
R1206
100K
R1207
1K
R1209
1K
R1109
1K
RECH1
Q1101,Q1201
B1ABGC000005
MUTTING SWITCH
Q1201
6
2
R1331
7.5K
R1332
10K
C1315
2200P
C1311
16V47
C1320
50V1
Q1312
C1323
1
C1324
16V47
R1338
4.7K
R1334
22K
R1333
4.7
R1327
4.7K
R1335
1.5K
Q1317
B1ABGC000005
BEATPROOF LEVEL SWITCH
R1337
10K
Q1312
B1ABCF000011
SWITCH
C1314
2200P
C1317
1000P
C1312 3300P
C1318
0.047
R1330
4.7
Q1309, Q1310
B1AAGC000006
BIAS SWITCH
Q1309
C1316
1000P
RECH1
L1302
G0C470JA0052
D1301
B0ACCK000005
C1319
16V100
R1329
4.7K
R1328
15K
Q1310
Q1317
C1321 4700P
C1202
470P
C1201 50V1
C1203 16V100
C1221
1000P
R1202 1.5K
C1207
1500P
C1206 50V2.2
R1204 10K
C1301 50V0.1
R1201
33
R1203 18K
C1205
470
C1222 0.01
C1371 0.01
C1223 270P
C1208 16V10
R1304
22K
R1305 10K
C1305
16V33
C1308
16V22
RECH1
C1204
25V
0.027
R1061
0
R1063
0
IC1000
C1AA00000612
ANALOG SWITCH
R1064
0
3
PBLIN
ERASE
GND
GND
PBRIN
CP1301
ERASE
HEAD
R/P
HEAD
LCH
RCH
C1107
1500P
C1302 0.033
R1302 470
C1303 0.033
C1
123
270P
C1
108
16V10
R1303 4.7M
C1304 50V4.7
C1307 10V220
C1
102
470P
C1
101
50V1
R1101
33
C1104
0.027
C1103
16V100
C1121
1000P
R1102
1.5K
C1
106
50V2.2
R1
104
10K
C1122
0.01
R1103
18K
C1105 470P
IC1001
AN7326K
DECK R/P IC
CN1305
: TAPE PLAYBACK SIGNAL LINE
: TAPE RECORD SIGNAL LINE
: +B SIGNAL LINE
2
1
2
1
WR1903
1
2
4
3
5
VCC
H=OFF
Vcc
Nor/Cro
SW
ALC
PB/REC
SW
REC
Lout
REC
Lin
TPS
GAIN
ADJ
ALC
LOW
OUT
TPS
PB
L out
Rout
PB
PB
L EQ
PB
R EQ
PB
L NF
PB
Lin
PB
Rin
12
13
14
15
16
17
18
19
20
21
22
RF
GND
REC
Rout
REC
Rin
TPS
Out
PB
R NF
10
5
4
3
2
1
6
7
8
9
11
REC AMP (R)
REC AMP (L)
PB AMP (R)
PB AMP (L)
Rec
Mute
Mute
TPS
PB
Rec
Rec
PB
PB
-+
-
+
ALC
PB Rec
Rec
PB
NOR/Chro
LOGIC
RIPPLE
REJECTION
REC/PB
LOGIC
IC1001
L1301
G2ZZ00000024
3
2
4
5
6
1
SA-AK750PL
76
Summary of Contents for SA-AK750PL
Page 8: ...8 SA AK750PL ...
Page 11: ...6 Accessories Remote Control FM Antenna Wire AC Cord AM Loop Antenna 11 SA AK750PL ...
Page 13: ...13 SA AK750PL ...
Page 15: ...With reference to page 15 of the operating instruction manual 15 SA AK750PL ...
Page 16: ...With reference to page 16 of the operating instruction manual 16 SA AK750PL ...
Page 27: ...10 3 Main Parts Location 27 SA AK750PL ...
Page 39: ...10 17 1 Replacement of Pinch Roller and Head Block 39 SA AK750PL ...
Page 40: ...10 17 2 Replacement of Motor Capstan Belt A Capstan Belt B and Winding Belt 40 SA AK750PL ...
Page 46: ...12 4 Checking and Repairing of Power P C B 46 SA AK750PL ...
Page 48: ...48 SA AK750PL ...
Page 52: ...15 3 Power P C B Transformer P C B 15 4 Panel P C B 52 SA AK750PL ...
Page 53: ...15 5 Main P C B 53 SA AK750PL ...
Page 54: ...15 6 Deck P C B 15 7 Waveform Chart 54 SA AK750PL ...
Page 56: ...56 SA AK750PL ...
Page 64: ...SA AK750PL 64 ...
Page 66: ...66 SA AK750PL ...
Page 86: ...SA AK750PL 86 ...
Page 91: ...23 Exploded Views 23 1 Cabinet Parts Location SA AK750PL 91 ...
Page 92: ...SA AK750PL 92 ...
Page 93: ...23 2 Deck Mechanism Parts Location RAA4403 S SA AK750PL 93 ...
Page 94: ...23 3 Packaging SA AK750PL 94 ...