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HCD-M90
35
35
TC board
CONTROL board
RF-240 board
DAC board
DVD board
LOADING board
Note:
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
6-7.
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)
E
: TAPE PLAY
a
: REC
c
: DVD PLAY
J
: CD PLAY
F
: DVD/CD PLAY (AUDIO)
L
: DVD/CD PLAY (VIDEO)
g
: DVD/CD PLAY (DIGITAL OUT)
j
: MD (VIDEO)
• Abbreviation
AUS
: Australian model
CH
: Chinese model
CND : Canadian model
SP
: Singapore model
C
B
These are omitted.
E
Q
• Circuit Boards Location
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• DVD board is multi-layer board.
However, the patterns of intermediate-layer not been included in
diagram.
• Indication of transistor.
JACK board
SWITCH board
POWER board
VIDEO board
MAIN board