Sony HCD-M80, Руководство по обслуживанию

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HCD-M80
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6-6. 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.
•
W
: indicates side identified with part number.
•
f
: internal component.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not 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.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M Ω ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM/AM)
J
: CD PLAY (AUDIO)
L
: CD PLAY (VIDEO)
E
: TAPE PLAY
a
: REC
j
: MD (VIDEO)
N
: MIC INPUT
• Abbreviation
EA : Saudi Arabia model
SP : Singapore model
TH : Thai model
• Circuit Boards Location
C
B
These are omitted.
E
Q
• VMP board is multi-layer printed board.
However, the patterns of intermediate-layer have not been
included in diagram.
• Indication of transistor.
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: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
JACK board
SWITCH board
POWER board
VIDEO board
MAIN board
TC board
CONTROL board
VMP board (VMP41)
BD board
LOADING board