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AO
R40 22K
R43
10
R41 5.1K
1/4W
R42 750
R44 22K
20
R45 22K
19
C59 22u16
+
C60 22u16
+
R46 22K
17
R47 22K
16
IC6
IC6
12BIT SERIAL
C76
0.01
PARALLEL
CHENGEOVER
3.0V
R84 22K
3
R80
2
150K
B PLAY
: 5.0V
IC5(1/2)
B REC
: 5.0V
DETECTER
2.3V
R83
5
R79
22K
6
150K
A PLAY
: 3.0V
AP
CN6
1
2
3
4
5
1
BIAS 12V
2
BIAS G
R94
3
MECH 12V
1.5
1/4W
4
MECH G
5
L-PLAY
6
A.GND
7
R-PLAY
8
A 12V
9
L-REC
10
R-REC
11
D.GND
12
5V
13
DPSS
14
IC DATA1
(SO)
C74
CN5
100P
R92
(
13
)
1
C73
1K
0.01
R93
(
14
)
2
1K
R91
(
12
)
3
1K
R90
(
)
11
4
1K
5
6
(
7
)
7
(
8
)
8
(
)
9
9
(
)
10
10
(
)
11
11
(
)
12
12
13
R86
100K
8
1
B.PH
R85
100K
7
A.PH
IC5(2/2)
4
A PLAY
: 4.0V
B PLAY
: 0V
B REC : 0V
A PLAY
: 0V
B PLAY
: 4.0V
B REC
: 4.0V
Y39-2600-20
AQ
CAUTION: For continued safety, replace safety critical
components only with manufacturer's recommended parts
(refer to parts list).
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 measure-
TEST
ments shall be carried out (exposed parts are acceptably
PIN
insulated from the supply circuit) before the appliance is
R-PLAY
returned to the customer.
R REC
A.GND
L-PLAY
The DC voltage is an actual reading measured with a high
L-REC
impedance type voltmeter with a cassette loaded at play-
E1
back 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.
X09-A/5
-CN3
DOLBY and the
6/7
ratories Licensing Corporation. Noise reduction circuit
made under license from Dolby Laboratories Licensing
WH1
C
Corporation.
2SA1286-T11
2SA954
2SA992
2SC1845
2SC2003
2SC2878
2SC3246
2SC3940A
2SD863
2SB1218A
2SC2714
STB
2SC4081
2SD1819A
CLR
X14-A/2
IC CLK
-CN1
IC DATA
7/7
A-PH
B-PH
D
B-PLAY
UN4212
A-PLAY
B-PACK
A-PACK
F-REC
R-REC
NC
IC1
:
HA12209F
IC2,3
:
BA328
IC4
:
BA3126N
IC5
:
BA10393
IC6
:
NJU3714D
Q1-4
:
2SC3246
Q5
:
2SC2003(L,K)
Q7,8
:
2SC2785(F,E) or
2SC1740S(Q,R)
Q9
:
DTA124ESA or
UN4112
Q10,11
:
2SC1845(F,E)
Q12
:
DTC124ESA or
UN4212
D1-4
:
1SS133 or
HSS104
D5
:
UZ-2.7BSB or
MTZJ2.7(B)
RECORDING LINE
SIGNAL LINE
GND LINE
RXD-790/V860/V890 (3/8)
RXD-790/V860/V890
AR
indicates safety critical components.
Ÿ symbol are trademarks of Dolby Labo-
2SA1175
2SC2785
2SC4137F50
2SB1370
2SD2061
2SB1375
2SD1893
2SD2012
2SB1559
NJM2100D
2SD2389
NJM4565D-D
DTA124ESA
BU4066BC
DTC124ESA
TC4066BP
UN4112
TC74HCU04AP
2SC1740S
AS
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