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A
B
(X28-2990-00) (B/5)
VR3
MECHANISM ASS'Y D40-1636-05
Q Q
220K
3 7 6 3 1 5 1 5 0
R REC
R/P/E HEAD (PCB)
VR4
220K
CN9
+E(BRN)
1
ERASE
1
1
HEAD
-E(BLU)
2
2
+R(GRN)
3
3
Rch
-R(YEL)
4
4
R/P HEAD
5
-L(ORG)
5
6
Lch
+L(RED)
6
7
2
R214
10K
5
CW
LOADING
MOTOR
R213
4
CCW
10K
3
COMMON
CLOSE SW
3
2
CLOSE SW
OPEN SW
(X28- ) (C/5)
1
OPEN SW
REC-F
REC-F SW
13
SENSOR OUT
12
CAPSTAN
MOTOR
SOLENOID
11
HALF
D42
HALF SW
10
T E
GND
L
1 3 9 4 2 2 9 6 5 1 3
9
VCC 12V
8
7
NC
6
NC
4
D43
5
COMMON
MODE SW
4
MODE SW
CrO2
3
CrO2 SW
D44
REC-R
2
NC
SENSOR
1
REC-R SW
SOLENOID
IC1
: CXP84124-150Q
IC2
: HA12167FB
IC3
: PST993D-T
1
2
3
4
5
5
IC4
: BA3126N
WH2
IC5
: BA328
IC6
: BA6209
Q1,2
: 2SD2061 or 2SD2012
Q3,35
: 2SD2525
Q4-7,12,26,27,36
: 2SC2785(F,E) or 2SC2458(Y,GR)
WH2
Q8,9,17,18,32,33
: UN5212 or DTC124EUA
1
2
3
4
5
Q10,11
: 2SA1286-T11
Q13,14
: UN4112 or DTA124ESA
Q15,16,19,20
: 2SD1450(S,T)
Q21-23,34
: UN4212 or DTC124ESA
Q24,25
: 2SC3940A(R,S) or 2SD863(E,F)
Q28-31
: UN5119 or DTA113ZUA
D1
: D2SBA20F03
D2-5
: S5688B or 1SR139-400
D6,7,11,13-23,25-28,
31-44,55-56
: 1SS133 or HSS104A
6
D8,9
: RD6.2ES(B2) or MTZJ6.2(B)
D10
: RD11ES(B2) or MTZJ11(B)
D12,29
: RD5.1ES(B2) or MTZJ5.1(B)
D24
: RD4.7ES(B2) or MTZJ4.7(B)
REV MODE
D45,49-54
: B30-2555-05
D46
: B30-2551-05
w w w
D47,48
: B30-2545-05
(X28- ) (D/5)
DIGITAL LINE
SIGNAL LINE
GND LINE
B LINE
+B
7
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or
resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
C
D
PLAY,STOP :0.3V
Q26,27
REC NOR :6.9V
REC,NOR :7.2V
R215
C217
HI :10.0V
HI,METAL :10.5V
33K
220P
BIAS OSC
METAL :10.0V
+B
+B
L5
R216
C218
R223
33K
220P
10
6
1
1/4W
Q26
2
R217
3.3 1/4W
4
3
+
R218
3.3 1/4W
REC NOR :6.9V
HI :10.0V
+
METAL :10.0V
Q27
+B
+B
D32
1.4V
R/P SELECT
C203
10u16
+
IC4
0.9V
+B
+
PLAY :0V
REC :5.1V
C204
10u16
+
LED DISPLAY
(B38-0179-05)
REC
STAND BY
EJECT
D47
D48
D46
R65
R66
R67
120
120
10
LED-5V
1
DOLBY NR
PAUSE
FWD
LED-RET
2
S9
S6
S4
S2
D39
D37
D35
STOP
REV.MODE
CRLS
S10
S8
S3
D41
D36
EJECT
REC
REV
S11
S7
S5
S1
D40
D38
D34
CN8
CLOSE-SW
OPEN-SW
E4
GND
MOTOR-(CW)
MOTOR+(CCW)
6
7
8
WH1
6
7
8
12
11
10
9
8
7
6
5
4
3
2
1
CN10
1
5V
CN5
2
CON
D33
LED-5V
1
LED-RET
2
KS0
CN11
KS1
KS3
DOLBY B
D49
KS2
DOLBY C
CRLS
PAUSE
D51
D50
D52
D45
KR2
KR0
x
a o
FWD
REV
1/
KR1
ON STANDBY
WH3
LED G2
LED G0
.
i
1
S12
LED G1
2
(X28- ) (E/5)
E
F
(X28-2990-00) (A/5)
13.0V
EH
C105
4.7u35
CONT
Q25
+
+B
+B
C106
Q21,22
4.7u35
0V
NOR/CrO2
BIAS
+
D31
ON/OFF
9.1V
9.1V
0V
Q22
Q21
+
Q23
CN7
CN6
EH GND
1
1
+B
+B
R226
5.1V
C225
1K
100u16
0V
+
9.0V
IC5
5.5V
(1/2)
4
8
6
PLAY L
2
2
7
70uS
13V
3
3
+B
R207
ON/OFF
R205
150K
PLAY R
4
4
0V
6.8K
C207
PLAY/REC
0.022
5
5
49
Q18
PB
REC L
EQ
6
6
ERASE
+
7
7
50
REC R
0V
8
8
NOR
9
9
C208
+
0.9V
0.022
10
10
R206
R208
6.8K
150K
5.6V
2
3
1.4V
1
IC5
5
(2/2)
-function indicator-
Dolby NR
direction
B-type c-type
reverse forward
rev. mode
crls
pause
Q
Q
3
7
IC6
TRAY
OPEN/CLOSE
+B
1
C24
0.1
2
C25
R49
47u16
2.2
+B
+B
+
1/4W
3
4
5
D56
D55
P1
C26
0.01
C19
0.01
BACK LIGHT
ON/OFF
R61
1
+B
+B
33
2
3.8V
0V
Q24
3
2.1V
4
2.3V
5
Q31
Q30
Q29
Q28
0.6V
2.0V
6
80
5.2V
7
14
4.2V
4.2V
4.2V
3.2V
8
15
u 1 6 3
1
y
9
16
10
18
11
19
12
20
Q28-31
E2
CURRENT DRIVER
E3
indicates safety critical
G
H
R209
1.5K
PB/L
C213
2
4
8
9
4.7u35
R210
1.5K
+
C214
4.7u35
+
PB/R
R104
33K
MPX
L2
3
C108
6800P
1
5
+
+
R110
Rch
3.9K
6.4V
SYSTEM
IC
C110
R112
IC2
0.033
2.2K
1
6.4V
1A
2
6.4V
+
C118
2200P
3
6.4V
R116 560
4
6.4V
+
C120 2200P
5
6.4V
C122 0.1
6
1.7V
C124 0.1
7
2.1V
R118
4.7K
C126 10u16
8
6.4V
REC OUT
+
C130 0.1
9
6.3V
VR6
REC
47K
C132 2.2u50
10
2.0V
/R
+
LMA
R126 10K
R130
R128
47K
4.7K
11
1.9V
C134 1u50
0V
12
6.3V
+
REC
Q20
13
EQ
R159 24K
14
1.2V
IREF
C136 10u16
15
6.2V
+
0V
16
NN
REC
MUTE
1.2V
17
NC
18
NM
0.6V
19
HN
20
HC
EQ-CONTROLER
6
3
1
5
1
5
0
8
R145 150K
12.8V
R139 62K
R146 82K
C147
100u16
R140 51K
+
+B
+B
+B
+B
+B
70
0V
5.1V
64
0V
65
FIN
0V
66
OPENSW
5.1V
67
CLOSESW
68
1.8V
READ
4.8V
69
CE
1.7V
5.1V
70
DOLBY-RST
5.1V
71
0V
NC
5.0V
5.1V
72
+B
VDD
73
IC1
+B
VDD
0V
74
u-COM
120/70
75
5.0V
NC
76
3.5V
NC
5.1V
77
AVR-OFF
5.0V
78
78
LINE-MUTE
0V
79
79
REC-MUTE
0V
80
0V
S.DATA
m
0V
c o
.
The DC voltage is an actual reading measured with a high impedance type voltmeter with a cassette
loaded at playback mode. The measurement value may vary depending on the measuring instruments
used or on the product. Bias circuit DC voltage is measured while in the record mode.
I
J
2
9
8
9
9
L1
R105
39K
3
MPX
C107
6800P
1
5
+
R109
3.9K
6.5V
Lch
70uS
0V
R111
C109
ON/OFF
60
2.2K
0.033
6.5V
1A
59
C113 4.7u35
0V
Q17
+
C117
2200P
58
6.6V
R115 560
57
6.6V
C119 2200P
+
56
6.5V
C121 0.1
55
1.8V
C123 0.1
54
2.2V
R117
C125 10u16
4.7K
REC OUT
53
6.5V
+
C129 0.1
52
6.4V
VR5
C131 2.2u50
47K
REC
51
2.1V
LMA
/L
+
R125 10K
R127
R129
4.7K
47K
50
2.1V
C133 1u50
49
6.4V
0V
+
48
Q19
REC
47
EQ
REC
C135 10u16
46
6.4V
0.6V
MUTE
+
C155 1u50
ON/OFF
45
0.2V
+
C156 1u50
C/B
44
0.2V
+
C157 1u50
MPX
43
0.2V
+
RESET
C142
42
5.1V
100P
STB
41
0V
9
2
4
9
8
2
9
9
0V
0V
1.3V
+B
+B
+B
+B
+B
+B
40
5.1V
PHOTO
39
5.1V
FREC-SW
39
38
0V
SOL
38
37
5.1V
VDD
+B
+B
36
AVSS
35
TEX
34
TX
33
VSS
X1
10MHz
32
2.4V
XTAL
31
2.4V
EXTAL
30
5.1V
C16 0.01
RST
29
4.3V
C17
NC
1u50
28
NC
+
5.1V
27
NC
26
NC
5.1V
25
NC
RESET
Q36
Q12
R30
C18
1K
1u50
+
0.6V
0V
Q36
4.9V
PHOTO
DETECT
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