Tascam 302MKII Service Manual page 26

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302
SCHEMATIC DIAGRAM
1 2
FRONT PCB
1 Mecha
LEVEL
J510
18K 1
BALANCE R ch TO VR
3
50K(A) 2 R ch FROM VR
A 100K(W)
2
3
3
4
2 1
1 5 L ch TO VR
L ch FROM VR
3
2
1 18K
2 Mecha
LEVEL
18K
6 R ch TO VR
BALANCE
3
50K(A) 7 R ch FROM VR
100K(W)
2
8
3
9 GND
2 1
1 10 L ch TO VR
L ch FROM VR
3
2
18K
1
B
C
C520
REMOTE 0.1(CC) R514
100K
J501
R515 C521
100K 100P
C533
10/25
CONTROL IN
U504
J502 1 8
2 7
3 6
4 5
TLP521-2
Q506
DTA124ES
R521 R523
CONTROL OUT 240 240
J503
R522
22k
C535
0.047
To CONTROL PCB
P507
J506
1 REMOTE
REMOTE
RX CLK 2 RX CLK
D
3 RX DATA
RX DATA
4 TX CLK
TX CLK
5 TX DATA
TX DATA
5P-PH
D501
1SS133
C501
To TRANS
P501
J701
8
DC12V
0.022
7 (ML)
6
0.35A
5
DC30V
4
0.15A
3
AC3.4V
C503
2 100/50
C.T
1
0.23A
D503
8P-EH
1N4003
EARTH PLATE
E
（Page 1/7）
II
MK
MAIN PCB (1/2), TR1 PCB, TR2 PCB, TR3 PCB
3
MAIN PCB (1/2)
P101
1
to LEVEL VR Rch1
2 LINE IN Rch1 from LEVEL VR
3
GND
4
5
to LEVEL VR Lch1
6 LINE IN Lch1 from LEVEL VR
7
7P-PH(WHT)
P301
1 to LEVEL VR Rch2
2
LINE IN Rch2 from LEVEL VR
3
GND
4
5 to LEVEL VR Lch2
6
LINE IN Lch2 from LEVEL VR
7
7P-PH(RED)
MAIN PCB (2/2)
POWER MUTE
U503
CXA1511L
R516
R517 R518
47K
200K 47
C523
C534 100/16
0.022
GND
C522
0.01
+2.7V
R519
2.2K R520 REMOTE
2.2K
RX DATA
RX CLK
TX DATA
TX CLK
Q507
DTA124ES
R524
22k
R525 22K
PWR DOWN
R501
100K
D509
Q501
1N4003
2SC1815GR
D511
Q503
1N4003
D510
R502 DTA124ES
47K 1N4003
C502
0.01(CC)
R506
4.7K
C506
100/25 D515
RD4.7EB2
FR2
RESISFUSE D512
1N4003
FR3 D513
1N4003
D504
LT2A05
D502 C504 C505
D514
MTZJ20C 10/35 RESISFUSE
4.7/50
LT2A05
D505
LT2A05
R503
2.2K
D517
D506
MTZJ4.3BT72
D508 D507 LT2A05
Q502 -20V
C519 1N4003 1N4003
2SA1015GR
1/50
AC C516
C508 R504 C509 C530
C507 4700/16
1K
AC 2.2/50 10/25 4700/16 1000/16
FR1,FR2,FR3 FOR EUR,230E-Y,AUS,UK,KOR
JUMP FOR OTHER
4 5
To EQ_BIAS PCB
P103 11P-XH P104 7P-XH P105 8P-XH
11 10 9 8 7 6 5 4 3 2 1 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1
HS
B/C/OFF1
B/C/OFF2
PITCH CON2
PITCH CON1
1/2
DUB
PARA
PLAY/*REC1
PLAYM1
RECM1
PLAY/*REC2
PLAYM2
RECM2
+7V
-7V
+5V
+12V
R508 C514
C510
4700/16 C512 120 100/16
R509
10/25 R507 3.3K
560
C511
4700/25 C513
100/16
C515
100/16
Q504 R510
R512
FR1 R511 2SA1015GR 2.7K
470 470
RESISFUSE
+12V
+5V
R513
+2.7V
180
D516
MTZJ2.7BT72
C517 C518
100/16 100/16
+5V +7V -7V
1 2 3 1 2 3 1 2 3 4
P15 P16
IN OUT IN OUT
Q505 3P-PH 3P-PH
N.C. N.C. N.C.
U502 78M05 2SB1134R
U501 NJM317
TR3 PCB TR2 PCB TR1 PCB
Double Auto Reverse Cassette Deck
6
P502
Cr1 1
METAL1 2
Cr2 3
METAL2 4
CUERM1 5
TO CONTROL PCB J505
CUERM2 6
SRESET 7
SSEL1 8
SCLK1 9
SDATA1 10
*HS2 11
11P-PH
P503
PWR DOWN 8
7
6
C532 +5V 5 TO CONTROL PCB J500
10/25
4 +5V 4
-20V 3
AC 2
AC 1
U510 4053
8P-PH
1 16
Y1 VDD
2 15
Y0 Y
3 14
Z1 X
4 13
Z X1
5 12
Z0 X0
6 11
INH A
7 10
VEE B
8 9
VSS C
R548
22K
Q517
DTC124ES
+12V
+7V
R526
U507 4053
HS 7.5K
1 16
Y1 VDD
SHORT:High Speed
2 15
R527 Y0 Y
R547
TP51 22K SPDVAR2 3 14
47K Z1 X
4 13
Z X1
SPDFIX2
5 12
Z0 X0
*HS1 6 11
INH A
Q508 7 10
VEE B
DTC124ES
8 9
VSS C
PITCH CON2
PITCH CON1
R51
10K(B)
NORMAL
HIGH
R528 24K
R529
SPD1 2.7K
+12V
Q509
2SC2120Y
R531
*CAP1
1K
R532
10K
R530
*SOL1
1K
U508
BA6219
C524
0.01(CC)
FF1
REW1
D519
RD4.7EB2 D524
Q511
DTC124ES
RD4.7EB2
PLAY1
D520
RD6.8EB2
CUERM1
SPDVAR2
SPDFIX2
R53
10K(B)
NORMAL
R537
HIGH
24K
SPD2 R538 2.7K
+5V
Q512
U505
2SC2120Y
BIAS1
1 20 R540
P5 VDD
FF1 2 19 RECM1 *CAP2
P6 P4
REW1 3 18 PLAY/*REC1 Q513
PLAY1 P7 P3 PLAYM1 R539
4 17 1K 2SC2120Y
P8 P2
5 16 *CUE1 *SOL2 1K
VSS P1
*SOL1
6 15
P9 VSS
7 14 SRESET
P10 CLR R541
DUB 8 13 SSEL1
P11 STB
*HS1 SCLK1 10K
9 12
P12 CLK
10 11 SDATA1
SO DATA U509
BA6219
NJU3714D
U506
BIAS2
1 20
P5 VDD
FF2 2 19 RECM2
P6 P4
REW2 3 18 PLAY/*REC2
PLAY2 P7 P3 PLAYM2
4 17
P8 P2
5 16 *CUE2
VSS P1
*SOL2 C527
6 15
P9 VSS
7 14 0.01(CC)
P10 CLR
1/2 8 13 FF2
P11 STB
DUAL REW2
9 12
P12 CLK
10 11
SO DATA
D522
D525
NJU3714D RD4.7EB2
RD4.7EB2
R551
PLAY2
22K
Q514 D523
DTC124ES
RD6.8EB2
CUERM2
P11
4P-PH
7
SPDVAR1
SPDFIX1
P505
1
SPDCOM1 2
TO FRONT PCB J509
SPDVAR1 3
SPDFIX1 4
4P-PH (WHT)
Norm Speed/PLAY:VARI 11 to 13
R52
Norm Speed/REC:VARI 12 to 13
22K(B)
Hi Speed:VARI 11,12,13 Open
P504
7P-PH
D518 7
1N4003
6
Q510
2SC2120Y 5
4
3
R533
10K
2
1
1MECHA
C526
0.1(CC)
C525
0.01(CC)
R536
47(1W)
Q515
DTC124ES
P506
1
2
TO FRONT PCB J509
3
4
4P-PH (RED)
P508
R54 7P-PH
22K(B)
7
6
5
D521
4
1N4003
3
2
1
R542
10K
2MECHA
C529
0.1(CC)
C528
0.01(CC)
R545
47(1W)
Q516
DTC124ES
302 II
MK
1 st Issue; January 2002