1
1
WM-D6C/TC-D6C
SERVICE MANUAL
WM-D6C/TC-D6C
US Model
WM-D6C/TC-D6C
Canadian Model
AEP Model
UK Model
E Model
WM-D6C
SUPPLEMENT-4
Subject: Change of servo circuit
(ECN-WMA00831)
• NEW/FORMER TYPE DISCRIMINATION
Former Type : 1-611-494-11, -12,
1-651-545-12
New Type
: 1-651-545-14
– MAIN BOARD (Conductor Side) –
1.
DIAGRAMS
1-1.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Boards:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
z
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Note on Schematic Diagram:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
• Components for right channel have same values as for
left channel. Reference numbers are coded from 200.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• AC voltage readings in the bias oscillator with a level
meter.
• Total current is measured with no cassette installed.
• Power voltage is dc 6 V and fed with regulated dc power
supply from external power voltage jack.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : playback
(
) : record
<
> : fast forward
[
] : rewind
〈〈
〉〉
: pause
I
: NORM
II
: CrO2
IV
: METAL
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
f
: playback
9-951-385-84
Sony Corporation
2001F0500-1
Personal Audio Company
C
2001.6
Shinagawa Tec Service Manual Production Group
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
