Read Sony CMT-EP505 / HCD-EP505 Service Manual online
HCD-EP505
19
19
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
6-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
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.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: TAPE PLAY
a
: RECORD
J
: CD PLAY
• Abbreviation
AR
: Argentina model
CH
: Chinese model
CND
: Canadian model
E51
: Chilean and Peruvian models
HK
: Hong Kong model
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component 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.)
12.4 Vp-p
17.8
µ
s
3.0 Vp-p
140 ns
•
Waveforms
– MAIN Board (AEP, UK, CH models) –
1
U403
w;
(XOUT) (TUNER mode)
2
Q615 (Collector) (REC mode)
5.1 Vp-p
240 ns
– DISPLAY Board –
3
IC301
ul
(X1)
1.8 Vp-p
230 ns
4
IC305
qf
(XO) (AEP, UK model)
Ver 1.1
Note:
The components identified
by mark
The components identified
by mark
0
or dotted line
with mark
0
are critical for
safety.
Replace only with part
number specified.
Replace only with part
number specified.
12.4 Vp-p
17.8
µ
s
4.0 Vp-p
140 ns
– MAIN Board (Except AEP, UK, CH models) –
wa
U402
ws
(XOUT) (TUNER mode)
ws
Q615 (Collector) (REC mode)
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