Service Manuals, User Guides, Schematic Diagrams or docs for : panasonic Audio SA-PM28 Viewing SGML_VIEW_DATA ALL SA-PM28E SVC sch11_12
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SCHEMATIC DIAGRAM - 11
: PLAYBACK SIGNAL LINE
DECK CIRCUIT : +B SIGNAL LINE : REC SIGNAL LINE
C1105
470P
R1103
C1102 18K C1122
1000P 0.01
R1101 R1104
27 C1104 10K
R1303
4.7M
0.027 C1303 C1307
0.033 10V220
50V2.2
16V100
C1302 0.033
50V4.7
C1103
C1304
C1108
16V10
C1101
R1302
50V1
470
R1102
1.5K
C1121 C1107
C1106
1000P
1500P
5 5
PBLIN 22 21 20 19 18ALC 17 16 15 14 13 12
4 4 PB PB PB PB TPS REC REC ALC
Lin L NF L EQ L out LOW GAIN Lin Lout Nor/Cro Vcc
3 3 OUT ADJ SW
PB Rec PB Rec
PBRIN -
2 2 + NOR/Chro
PB PB AMP (L) LOGIC
1 1 IC1001 Rec Mute
REC AMP (L)
ALC
CP1301 AN7326K TPS
REC AMP (R)
P/B REC AMP IC Rec
+
PB AMP (R)
Mute IC1001 RIPPLE
REJECTION
PB -
PB Rec REC/PB
LOGIC
PB PB PB PB TPS REC REC PB/REC
Rin R NF R EQ Rout TPS Out Rin Rout SW RF GND
1 2 3 4 5 6 7 8 9 10 11
16V33
16V22
C1221 C1207
22K
1000P 1500P
50V0.1
C1301
R1202
50V2.2
C1206
R1304
C1305
C1308
1.5K
16V100
C1203
50V1
C1208
16V10
R1204
C1204
10K
R1201 0.027 R1305
C1202 10K
1000P 27
C1201 R1203 18K
C1222
C1205 0.01
470P
IC1000 C1223
C1AA00000612 270P
H=OFF IC1000 ANALOG SWITCH IC L1302
RLQB470JTD-D
VCC
1 2 3 4 5 Q1309, 1310
B1AAGC000006
BIAS SWITCH
RECH1
R1334 C1316 C1371
C1323 22K 1000P 0.01
1
C1324 R1338 Q1309
16V47 4.7K R1329 R1328
R1333 4.7K 15K
4.7 C1312
L1301 R1330 3300P
7L1A62N 4.7
6 1 Q1310
C1318
C1322
1000P
0.047
Q1317 C1321 R1327
4700P 2 4.7K
2SD2114K1V 5
SWITCH BEAT PROOF
LEVEL 4 3 C1317
16V100
C1319
1000P
R1335
1.5K
Q1317 C1314 C1315
Q1313 2200P 2200P
2SC2784FTA Q1313
SWITCH
R1337 R1332
10K D1301 10K
Q1312 C1311
B0ACCK000005 16V47
R1331
C1320 7.5K
C1325 50V1
0.01
Q1312
R1336 2SC2412KT96R
1.5K SWITCH
BPL
SCHEMATIC DIAGRAM - 12
: PLAYBACK SIGNAL LINE
DECK CIRCUIT : +B SIGNAL LINE : REC SIGNAL LINE
R1307
22
Q1101, 1201
2SD2114K1V
MUTING SWITCH
R1105 R1109
2.2K 1K
R1107
C1110 R1106
Q1101 1K
6800P 100K
C1123
270P
R1308 R1205 R1209
22 2.2K 1K
R1207
C1210 R1206 Q1201 1K
6800P 100K
R1309
470
D9V
C1109 R1313 C1310
50V3.3 10K 50V0.1
MOTOR_GND
Q1302 9
MOTOR_9V
8
C1209 9V
50V3.3 7
Q1302 9V_GND TO
6
DTA114EKA146 PB Lout MAIN CIRCUIT
DECK MUTING CONTROL 5 (H309/W309) ON
PB Rout
4 SCHEMATIC
R1110
AF_GND DIAGRAM - 5
3
33K REC Lin
Q1306, 1307 2
2SC2412KT96R REC Rin
1
SWITCH
R1210 CN1304
33K
BPL
RECH1
R1319 R1371
12K 22K
AN6 Q1305
DTC114EKA146
SWITCH
Q1306 R1318
10K Q1304
Q1304
VREF+
DTC143XKA146
R1320 Q1305 Q1303 SWITCH (REC:H) TAPE_EJECT
11
100K REC
Q1303 10
BP
Q1307 AN7
DTC143XKA146 9
SWITCH DMT
R1314 8
1K AN6
R1321
R1316 7 TO
1K AN7 MAIN CIRCUIT
47 R1322 6
82K VREF- (H307/W307) ON
VREF+
5 SCHEMATIC
VREF-
4 DIAGRAM - 6
Q1315 PL_L
KTA12710YTA 3
SWITCH MOTOR_L
2
REC
PHOTO
BP
1
CN1303
PL_VCC
PHOTO
VREF+
Q1315
VREF-
GND2
AN7
C1326
10V10
1 2 3 4 5 6 7 8 9 R1342 R1344
CP1902 10K 47K 27K
CS971 R1341 R1374 4.7K
1 2 3 4 5 6 7 8 9 470 470 R1343
3.3K
GND
MOTOR_VCC
PL
AN7
1 VREF+ Q1314
R1345
MA2C16500E
Q1316 1K
D971
2 AD_OUT
PL
RECINH_R
RECINH_F
Q1316 Q1314
3 RECINH_F 2SD09650RA DTA143XKA146
CRO2
MODE
HALF
SWITCH SWITCH (MOTOR SUPPLY)
W308B
4 MODE 1 2 1 2
R972
820 W1903
5 RECINH_R
1 2
S973
S975
S971
S974
S972
W308A
6 HALF
7 VREF-
R973 Z971 S602
39K TAPE EJECT
Z971
RGSD12A1445T
IC971 RADA RESISTOR
DECK MECHANISM
CNB13030R2AU TAPE EJECT
PHOTO INTERUPTOR CIRCUIT CIRCUIT
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