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22k
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MICRO —
COMPUTOR)
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main or remote
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main and remote
main and remote
16n
Bn
SAFETY
OPERATION
7AUTO
IND.
DRIVE
For F.R. Germany
only
SAFETY
OPERATION
IND.
6G'
COMPUTOR DRIVE IND.
SPEAKER
IMPEDANCE
_] SELECTOR
Mi SCHEMATIC
DIAGRAM
(This schematic diagram may be modified at any time with the development of new technology.)
*
A
OVERLOAD
DET.
(LEVEL SIF TEI
AC 220V
The part No. of transistors, IC and diodes mentioned in the schematic diagram stand for production part No.
Regarding the part No. with
€) mark, the production part No. are different from the replacement part No.
Therefore, when placing an order for replacement part, please use the part No. in the replacement part list.
Notes:
1. $1~S6
:_
Input selector switch in "phono" position.
S1: phono, S2: tuner, S3: CD, S4: video/aux,
S5: tape 1/DA tape, S6: tape 2
2. $7
:
Recording selector switch in ''off" position.
3. $8
:
Audio muting switch in "off" position. (off <>
—20dB)
4. $9-1
:
Loudness switch in "off" position. (on <>
off)
5. $10-1
:
Subsonic filter switch in "off" position (on <—
off)
6. $10-2.
:
Tone switch in "defeat" position. (defeat <->
on)
7. $11-1:
Main speakers selector switch in "'on" position. (on <—
off)
8. S11-2.
:
Remote speakers selector switch in "off" position. (on <—
off)
9. $12
:
Speaker impedance selector switch in "82 ~ 162/162" position.
[ Main or remote 8~16Q
._,
Main or remote 4~62
Main and remote 162
Main and remote 82
10. $13
:
Power switch in "'on" position.
. $14 [XA, EK, XL] only
:
Voltage selector switch in ""240V" position.
(110V <=
120V <-> 240V
<>
220V)
12.
Important safety notice:
Components
identified by
A
mark have special characteristics important for safety. When replacing any of
these components, use only manufacturer's specified parts.
13.
[{~]
Indicated voltage values are the standard values for the DC electronic circuit tester (high-impedance)
with the chassis taken as standard. Therefore, there may exist some errors in the voltage values,
depending on the internal impedance of the DC circuit tester. [high tap —»
162/8~ 16Q]
in (
) stand for DC voltage in low tap. [82/4 ~ 6Q]
Phono signal (Lch).
Positive voltage lines or Negative voltage lines.
. This is the basic circuit diagram (For continental Europe) of this unit. Note that part of the circuit is subject
to change depending on the areas.
. Regarding the circuits to be changed in the basic circuit diagram (For continental Europe) and related areas
[EK], [XL], [XA] refer to the separate service manual (Order No. HAD84072860C8-A).
1c502
Q503,504
ST12003
2SC2631
2CH POWER AMP &
CURRENT STABILIZER
PROTECTION DET.
Loch
Speaker
terminal
terminal
(50/60 Hz)
Change of Power Amp. IC Parts No.
For F.R. Germany only
STK2038-4 =>
8v12003
Part Name & Description
INTEGRATED CIRCUIT
1C502
| STK2038-4
| svi2003
Power Amplifier
TRANSISTORS
Q505,506
| 2SA992
[_Not used
DIODES
D503,504_
| MA167
| Not used
RESISTORS
R527, 528
ERX2ANJR22
Not used
R529, 530
ERDS2TJ331
Not used
R531, 532
ERDS2TJ561
Not used
R533, 534
ERDS2TJ272
Not used
R539, 540
Not used
ERD25FJ561
Carbon, 1/4W 5602
R608
Not used
ERDS2TJ183
[ Carbon, 1/4W 18kQ
R609, 610
ERDS2TJ183
Not used
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