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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.
•
: internal component.
f
•
: 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
(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.
C
Q
These are omitted.
B
E
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
1
/
W or less unless otherwise
4
specified.
•
f
: internal component.
• C : panel designation.
Note:
Note:
The components identi-
Les composants identifiés par
fied by mark 0 or dotted
une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
Ne les remplacer que par une
cal for safety.
pièce por tant le numéro
Replace only with part
spécifié.
number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
• Circuit Boards Location
SWITCH board
JACK board
TC board
LOADING board
35
35
POWER board
VIDEO board
MAIN board
CONTROL board
DAC board
DVD board
RF-240 board
HCD-M90
Ver 1.3
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