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AO
AP
AQ
D1
+
D2
5.1V
HP MUTE
DRIVE
ELECTRIC
VOLUME
Q19
5.2V
TONE
+
+
+
+
CONTROL
(L,R,SW)
4.8V
5.1V
4.4V
4.9V
4.7V
5.1V
IC7
+
+
Q1,2,5-8
-10dB ATT
R3
3.3u50
4.3K
Q1
R221
22K
0.6V
10
11
0.6V
12
C114
VOLUME+
Q2
9
4.7u50
LOUDNESS
R222
+
22K
SUPPLY
4.3V
MUTE
8
R4
3.3u50
13
7
4.3K
6
14
SERIAL BUS
DECODER+
4.7V
5
C113 100P
5.0V
15V
LATCHES
INPUT
4.9V
4
C112 100P
SELECTOR
15
R136 1K
SOFT
3
16
MUTE
R135 1K
+15V
17
5.0V
C111
C36
VOLUME+
2
4.7u50
R62
2.2u50
LOUDNESS
18
+
4.3K
4.3V
MUTE
5.0V
R225
0.6V
19
1
Q7
20
22K
R227
0.6V
Q5
22K
C49
10
R33
2.2u50
11
4.3K
12
C124
VOLUME+
9
W17 4.7u50
LOUDNESS
15V
+
4.3V
SUPPLY
+15V
MUTE
C41
8
R82
2.2u50
7
13
3.3K
6
14
SERIAL BUS
R228
0.6V
DECODER+
4.7V
5
C123 100P
Q8
LATCHES
22K
4.9V
4
C122 100P
15
INPUT
SELECTOR
3
R138 1K
16
SOFT
MUTE
-15V
17
R137 1K
+15V
C121
R93
18
VOLUME+
2
W11
4.7u35
1K
C50
LOUDNESS
R34
2.2u50
+
4.3V
19
4.3K
MUTE
1
20
R226
0.6V
Q6
22K
+15V
15V
CAUTION: For continued safety, replace safety critical components only with manufacturer's rec-
ommended parts (refer to parts list).
indicates safety critical components. For continued protec-
tion against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of elec-
tric 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.
AR
AS
AT
R119
14.8V
+15V
100 2W
IC5(1/2)
MUTE ON: 2.0V
C61 1u50
C69 1u50
3
8
MUTE OFF: -9.3V
R111
1
+
+
R103
0V
2
2.2K
47 1W
R115
D15
D14
R105 22K
1K
Q11
-11.0V
MUTE
PHONES AMP
-10.4V
R203
-11.0V
2.2K
+
R116
Q12
R106 22K
1K
R112
0V
6
C62
C70
7
47
1u50
R104
1u50
5
1W
+
+
2.2K
R120 100 2W
4
IC5(2/2)
15V
-14.4V
30V
15.3V
+15V
IC1-4
IC1
FLch
AMP
15.3V
(1/2)
R9
C15
3
8
15K
1
C1
C3
3
8
C13
+
2
1
R23
R25
10u50
0.082
0.082
2
+
22
22
R17 18K
IC11(1/2)
R11 330
100Hz HPF
R12 330
R18 18K
IC11(2/2)
6
C14
6
7
R24
R26
10u50
C16
C2
C4
7
5
+
5
22
22
R10
0.082
0.082
4
15K
+
4
FRch
IC1(2/2)
-15.4V
-15.4V
15.3V
Cch
IC2(1/2)
3
8
R71
R72
C35 10u50
1
+
2
+
22
22
R70
C37
R69
2.4K
22u16
47K
+
R49
C39
R47
2.4K
22u16
47K
+
6
7
R53
R55
C29 10u50
5
22
22
+
+
4
IC2(2/2)
SLch
-15.4V
100Hz LPF
15.3V
SWch
IC3(2/2)
IC3(1/2)
C45 0.27
5
8
R87
R88
R89
C47
7
3
+
6
1
R90
R91
22u50
8.2K
8.2K
8.2K
C48
2
+
33u16
R85 39K
22
22
4
R94 330
+
C76
-15.4V
1000P
-10dB ATT DRIVER
15.3V
SRch
IC4(2/2)
5
8
C30
R54
R56
10u50
R182
7
3.2V
+
6
IC4(1/2)
Q15
3.9V
22
22
+
2.2K
C40
LESS THAN -10dB
22u16
R48 47K
C51
2
(ATT ON) : 1.1V
+
1
MORE THAN -9dB
0.01
3
3.9V
(ATT OFF) : -2.0V
C78
4
D16
-15.4V
1000P
15V
The DC voltage is an actual reading measured with a high impedance type volt-
meter with no signal input. The measurement value may vary depending on the
measuring instruments used or on the product.
AU
AV
AW
(X08- ) (B/2)
PHONES
SUB UNIT
J1
(X13-7562-70)
E2
CN1
E1
Lch
GND
1
C1
5
5
1u50
GND
Lch
2
4
4
+
Rch
3
3
1
GND
3
HP
Rch
4
2
2
D.GND
GND
5
1
1
E8
WH1
P1
C2
1u50
+
+5.6V
30V
L+R
CN2
1
MIC
2
GND
3
Lch
4
GND
5
Rch
6
Cch
CN2
W9
7
Sch/SLch
GND
5
C11
R10
2
1u50
39K
8
SRch
B
SWOUT
4
+
9
SWch
GND
3
10
GND
MIXEDSW
2
11
HPMUTE
GND
1
12
HPDET
13
DGND
IC1,2 : NJM4565D-D
+5.6V
14
+5.6V
-30V
15
-30V
E5
E7
E9
CONTROL UNIT
(X11- ) (C/5)
+25V
15V AVR
+15V
POWER
+
ON/OFF
R204
2
470
5.2V
3
0V
Q6
Q7
8
+
4.6V
+18V
1
+25V
2
+25V
GND
3
GND
4
POWER
5
0V
0V
+
F1
6
+15V
7
+15V
5
F2
8
6
-15V
9
15V
IC11
GND
10
(2/2)
F. OFF
11
-46V
12
+
15.4V
+14V
13
CN18
15V
E6
C159 0.01
D31
+14V
D28
D27
+
C157 0.01
C165 0.01
D34
46V
AX
AY
AZ
2SC2003
DTC124ESA
2SC2878
2SA1048
2SC3246
2SC2458
IC1
15.0V
(2/2)
+15V
8
3
R5
1
22K
2
R3
330
BUFFER
C8
1000P
2SB1375
2SC4081
R4
2SD1757K
330
6
7
R6
5
22K
4
IC1
15V
(1/2)
-15.0V
CN3
15.0V
15V
5
-15V
3
+15V
+15V
4
+15V
6
8
3
GND
7
5
2
GND
IC2
1
GND
TA8409S
TDA7309
(1/2)
ADD
R9 22K
2
R12
22
1
3
-15.0V
4
15V
IC2
(2/2)
(X11- )
SIGNAL LINE
D21-24,31,34
: S5688B or 1SR139-400
GND LINE
D26,53
: RD5.1JS(B2) or HZS5.1S(B2)
B LINE
+B
D27
: 1SS131 or HSS104A
B LINE
B
D28
: RD2.7ES(B2) or HZS2.7N(B2)
D49
: RD8.2ES(B2) or HZS8.2N(B2)
D50,51
: MTZJ10(B) or UZ-10BSB
+25V
D52
: RD6.2ES(B2) or HZS6.2N(B2)
15.4V
Q4
R257
C144
IC11
: NJM4558D
1 1W
0.01
+15V
+25V
Q4
: 2SD1894 2
25.8V
C146
390P
Q6,7
: UN4212 or DTC124ESA
Q8,18
: 2SB1370(E,F) or 2SB1375
10.4V
5.2V
R200
D53
1
(X11- ) (D/5)
D22
2.4K
C139
R202
IC11
10u50
470
16.5V
F2
C143
T800MAL
(1/2)
+
0.01
+
E2
WH1
E1
(X11- )
16.9V
250V
+B
1
1
(E/5)
D21
CN11 CN12
2
2
F3
T800MAL
C141
250V
0.01
3
3
CN13 CN14
D23
4
4
-18.3V
B
C142
5
5
4
R224
0.01
1K
6
6
7
+
D24
7
7
14.6V
-15.9V
8
8
Q18
R242
1 1/4W
-15.9V
R258
R241
47
1 1/4W
1W
Q8
-27.7V
-15V AVR
C-V301/V351 (3/4)
BA
BB
BC
UN5119
2SB1370
UN4212
2SA1576A
2SD2061
2SA1309A
2SA1586
2SC3311A
2SC4116
NJM4558D
NJM2279D
TC9215AP
NJM4565D-D
SAA6579
NJM4580D-D
TDA7466
2SK302
LA1836
LC72131
LA2786
LV1016
NJU7311AL
NJU7312AL
(X11- ) (B/5)
WH7
F1
T2.5A L 250V
CN6
CN5
(E TYPE)
J6
WH6
C186
(T TYPE)
6800P
J6
2
1
CN1
C-V301/V351
(T,E) : AC230V~ 50Hz
Y05-3952-70
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