Sony STR-V5550, Руководство по обслуживанию

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– 16 –
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.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
• p : parts mounted on the conductor side.
• ®
: Through hole.
• ¢ : internal component.
•
b
: Pattern from the side which enables seeing.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• 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
L
: AUDIO (AV INPUT)
g
: MD/VIDEO
i
: VIDEO (AV INPUT)
E
: PB (DECK A)
G
: REC (DECK B)
J
: CD
• Abbreviation
HK : Hong Kong
SP : Singapore
MY : Malaysia
CH : Chinese
TH : Thai
IA : Indonesia
Waveforms
1
2
IC501
!£
XT2
IC501
0
X2
– DISPLAY Section –
5MHz
5.5Vp-p
32.768kHz
5Vp-p
• Indication of transistor
C
These are omitted
E B
Q
C
These are omitted
E B
— 15 —
The components identified by
mark
! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.