Tascam 302MKII Service Manual page 27

»
302
SCHEMATIC DIAGRAM
1 2
to LEVEL VR Lch1
to LEVEL VR Rch1
LINE IN Lch1 from LEVEL VR
LINE IN Rch1 from LEVEL VR
To 2/1
PB IN Lch1
PB IN Rch1
REC SIGNAL Lch1
A REC SIGNAL Rch1
1 Mecha
4051&4052
U104,107,109,304
Vcc 16 +7V
-7V 7 Vee
GND 8 Vss
Op Amp
U108,110
Vcc 8 +7V
-7V 4 Vee
B
R184
10K
C110
Lch 10u/25V
U103
CXA1598S
C210
Rch 10u/25V
R168
27K
to LEVEL VR Lch2
C
to LEVEL VR Rch2
LINE IN Lch2 from LEVEL VR
LINE IN Rch2 from LEVEL VR
To 2/1
PB IN Lch2
PB IN Rch2
REC SIGNAL Lch2
REC SIGNAL Rch2
2 Mecha
D
C310
Lch
10/25
U303
CXA1598S
E
Rch C410
10/25
R368
27K
（Page 2/7）
II
MK
MAIN PCB (2/2)
3
L102
TRAP_COIL R110 R114
R109 100K
100K
6.2K
C117
TP11
220P
6 3
OUT IN
C107
2.2
L101
/50
MPX
C101
1/50 R108 C102 C105 C106
2.7K 10/25 0.1 0.068
(ML) (ML)
U101
CXA1561S
R106
8.2K
C115
1/25
R107
R102
10K
20K
C205 C206
R208 C202 C207
2.7K 10/25 0.1 0.068
2.2/50
(ML) (ML) -7V
C201 1/50
L201 MPX
6 3
OUT IN
TP21
C217
R210
R209 R214
220P
100K 100K
6.2K
L202
TRAP_COIL
Q102 R128
R127
2SD2144S 5.6K
2.2K
R130 R131 R132
27K 24K 39K
R125
4.7K C112 R137 R138
Q103 R136
0.47/50
DTA124ES
33K 16K 10K
R142 R143 R144
R11
R126
C111 12K
10K R129 47K 12K
22K(B)
10/25 5.6K
R148 R149 R150
C211 R226
R229
10/25 10K
5.6K 33K 22K 36K
R154 R155 R156
C212
R21
22K(B)
0.47/50 27K 15K 18K
R225
4.7K R160 R161 R162
36K 11K 18K
Q202 R227 R228
2SD2144S
2.2K 5.6K
L302 R309
TRAP_COIL 6.2K R314
R310
TP31
100K
100K NR REC OUT Lch2
C317
220P 6 3
OUT IN
L301
MPX
C301 1/50
C307
C302 C305 C306
R308 0.1 0.068 2.2/50
10/25
2.7K (ML) (ML)
U301
CXA1561S
C315 R306
1/50 8.2K
R307
R302
20K C405 C406 10K
C401 C407
R408 C402 0.1 0.068
1/50 2.7K 10/25 (ML) 2.2/50
(ML)
L402
L401 MPX
TRAP_COIL
6 3
OUT IN
TP41
C417 R410
220P 100K
R414
R409 100K
6.2K
RECM2
R385
10K
Q302
R327
2SD2144S R328
2.2K 5.6K
R330 R331 R332
27K 24K 39K
C312
R325
0.47/50 R336 R337 R338
Q303
4.7K
DTA124ES
33K 10K
R329 16K
5.6K R344
R342 R343
R31
R326
22K(B)
C311 47K 12K 12K
10K
10/25
R349 R350
C411 R348
R426
R429
10/25 10K
5.6K 33K 22K 36K
C412
R354 R355 R356
R41 0.47/50
22K(B)
R425
27K 15K 18K
4.7K
R360 R361 R362
R428
R427 5.6K
Q402 36K 11K 18K
2.2K
2SD2144S
4 5
To AN_SW PCB P801
Q101
2SD2144S
P107 10P-XH
MST SLV
OFF 0 0
MASTER 5
0
SLAVE 0 5
1 2 3 4 5 6 7 8 9 10
R115
220 R116
1K
C108
4.7/50
C208
4.7/50
R122
10K
R215
220
R216
1K
R222
10K
Q201
U107 A
2SC2144S
12 13
Q214 X0 X
14
2SC1815GR X1
15 3
X2 Y Q108
11 Q208
X3
R277 2SC1815GR 2SC1815GR
1K
1
R278 Y0
5
1K 2 Y1
Y2
4
R177 R178 Y3
6
1K 1K INH
10
A
9
Q114 B
2SC1815GR
BU4052BC
+5V
R133 R134 R135
33K 18K U104
62K LS NORMAL
U109 B
R139 R140 R141 13 3
X0 X
LS Cr 14 13
X1 X X0
15
27K 91K 10K X2 X1
LS METAL 12 3
X3 Y X2
HS NORMAL 1
R145 R146 R147
X4 X3
HS Cr 5
X5
2
18K 100K 27K HS METAL X6 Y0
4
X7 Y1
R151 R152 R153 Y2
6
INH Y3
11
24K 47K A INH
27K 10
B A
9
R157 R158 R159 C B
BU4051BC BU4052BC
24K 27K 47K
R163 R164 R165
22K 27K 47K
U110A U110B
3 5
1 7
2 6
NJM4558D NJM4558D
Q301
2SD2144S
To AN_SW PCB P802
P108 5P-XH
R316
1K
1 2 3 4 5
R315
220
C308 4.7/50
C408 4.7/50
Q304
DTA124ES
To AN_SW PCB P804
P110
R416
1K
1 2 3
R384
R415 10K
220
-7V Q401
2SD2144S D301 D302
1SS133 1SS133 D307 1SS133
POWER MUTE
D309 1SS133
DUB
Q315
DTC124ES
+5V
R333 R334 R335
33K 62K 18K LS NORMAL U304
13 3
R339 R340 R341 X0 X
LS Cr 14
X1
15
27K 91K 10K X2
LS METAL 12
HS NORMAL 1 X3
R346
R345 R347 X4
HS Cr 5
X5
2
18K 100K 27K HS METAL X6
4
X7
R351 R352 R353
6
INH
11 MODE 2
A
24K 27K 47K 10
B
9
R357 R358 R359 C
BU4051BC
24K 27K 47K
R363 R364 R365
22K 27K 47K
Double Auto Reverse Cassette Deck
6
REC VR Lch 1
REC VR Rch 1
5
4
3
C113 C114
C 10/25 10/25
8
9
10
R185
10K
LINE OUT Lch1
U108A
NJM5532D LINE OUT Rch1
R123
GND
3 10
1
2 LINE OUT Lch1
LINE OUT Rch1
U108B NJM5532D LINE IN Lch1
R223
5 10
7 REC VR Lch 1
6
LINE IN Rch1
REC VR Rch 1
1
D106
1N4003
R179 B/C/OFF1
K101
R105 HX2-12V 1K
Cr1
2.2K
Q104
R104
Q109 DTA124ES METAL1
2.2K 12
DTC124ES Q110
D104 R180
1/2
2SC1815GR
R181 1SS133 1K
R175
D105 DUB
10K 1SS133
2.2K
HS
D103
R176
PLAY/*REC1
R103 1SS133 2.2K
10K
PLAYM2 PLAYM1
RECM1
D107
1SS133
Q113
DTA124ES
R166 R169
10K 8.2K
R101
12 R167
14
10K
15
47K
11
1
Q105
5 DTC124ES
2
Q106
4
DTA124ES
6 Q107
10
DTC124ES
9 R182
10K
R183
C118 15K
2.2/50
Q112
DTC124ES
-7V
+7V
C313 C314
10/25 10/25
To AN_SW PCB P803
P109 8P-XH
1 2 3 4 5 6 7
8
7P-XH
4 5 6 7
+7
-7
+5
R379
1K
R380
R369
1K
8.2K
Q313
DTA124ES
R366
10K
R367
10K R301
47K
Q305
DTC124ES
R382
10K
Q306
Q307
DTA124ES
DTC124ES
C318
R383
2.2/50
15K
Q312
DTC124ES
7
-7V
To 2/1
GND
+7V
J101
RCA2X3
LINE IN Lch1
SLV OUT Lch1
LINE IN 1
LINE IN Rch1
SLV OUT Rch1
10K
R285
LINE OUT 1
SLAVE OUT
1
2 N.C.
3 P14 3P PLUG-EH
P13 3P-PH
1
2
3
P12
4
3
2
1
4P PLUG-EH
To 2/1
POWER MUTE
+5V
+12V
PITCH CON1
+5V
C
B/C/OFF
B
GND
OFF
+5V
COMMON
COMMON/SEVERAL
SEVERAL
GND
J102
RCA2X2
LINE IN Lch2
LINE IN 2
LINE IN Rch2
LINE OUT Lch2
LINE OUT 2
LINE OUT Rch2
C531
0.047(CC)
B/C/OFF2
Cr2
METAL2
PLAY/*REC2
To 2/1
PLAYM2
RECM2
PARA
PICHI CON2
302 II
MK
1 st Issue; January 2002