Sony HCD-EP505, Service Manual

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HCD-EP505
19 19
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.
6-5. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
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.
• 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 : 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
0 or dotted line
with mark
0
are critical for
safety.
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)