Sony WM-D6C Service Manual page 36

WM-D6C/TC-D6C
Q Q
3 7 6 3 1 5 1 5 0
SERVICE MANUAL
Ver 1.1 2001.06
SUPPLEMENT-4
Subject: Change of servo circuit
• NEW/FORMER TYPE DISCRIMINATION
T E
L 1 3 9 4 2 2 9 6 5 1 3
– MAIN BOARD (Conductor Side) –
w w w
.
Sony Corporation
9-951-385-84
2001F0500-1 Personal Audio Company
C 2001.6 Shinagawa Tec Service Manual Production Group
http://www.xiaoyu163.com
US Model
WM-D6C/TC-D6C
Canadian Model
AEP Model
UK Model
(ECN-WMA00831)
Former Type : 1-611-494-11, -12,
1-651-545-12
New Type : 1-651-545-14
x a o u 1 6 3
y
i
http://www.xiaoyu163.com
8
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.
• : Through hole.
z
• : 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.
E Model
WM-D6C
Q Q
3 7 6 3 1
.
1 1
2 4
9 9 8
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
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 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
f : playback
5 1 5 0 8 9 2 4 9
m
c o
WM-D6C/TC-D6C
2
9 9
1
/ W or less unless otherwise
4
8 2 9 9