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15
15
HCD-EP305
Note on Schematic Diagram:
• All capacitors are in
µ
F unless otherwise noted. p: pF.
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.
•
2
: nonflammable resistor.
•
C
: panel designation.
Note on Printed Wiring Board:
•
W
: indicates side identified with part number.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
•
A
: 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.
no mark : FM
<
> : CD (STOP)
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: PB (TAPE)
a
: REC (TAPE)
J
: CD PLAY
• Waveforms
– MAIN Board –
– CASSETTE Board –
– DISPLAY Board –
B
These are omitted.
C
E
SECTION 6
DIAGRAMS
6-1. Circuit Boards Location
MAIN board
LED board
HEADPHONE board
CASSETTE board
DISPLAY board
POWER board
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299