Sony TCW-E475, Руководство по обслуживанию

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13 13
TC-WE475
WAVEFORMS
– MAIN SECTION (3/4) –
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• 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 /
4
W or less unless otherwise
specified.
• % : indicates tolerance.
• f : internal component.
• 5 : fusible resistor.
• C : panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• : Pattern from the side which enables seeing.
• Transistor of “B” and “C” indication is omitted.
•
A
: B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : STOP
(
) : REC
< > : PB
∗
: Can not be measured.
• 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.
d
: PB
G
: REC (DECK B)
• Abbreviation
CND : Canadian model.
AUS
: Australian model.
SP : Singapore model.
• Indication of transistor
C
These are omitted
E B
1
IC801
el
EXTAL
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
piéce portant le numéro
spécifié.
4.4Vp-p
10MHz