Sony STR-V5550 / STR-V7770 Service Manual ▷ View online
– 16 –
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
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
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
¢
: 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.
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.
• 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
mark
!
or dotted line with mark
!
are critical for safety.
Replace only with part number
specified.
specified.
STR-V5550/V7770
4-3. PRINTED WIRING BOARD — MAIN SECTION —
• Refer to page 10 for Circuit Boards Location.
— 17 —
— 18 —
Ref. No.
Location
D101
B-11
D102
B-11
D131
E-9
D401
D-5
D402
D-5
D403
C-9
D742
F-8
D743
F-10
D746
F-11
D751
F-11
D752
E-10
D761
E-12
D781
G-10
D801
E-4
D802
F-5
D803
E-4
D804
C-2
D805
F-4
D806
F-4
D807
F-4
D808
F-4
D810
E-4
D811
E-4
D812
C-2
D813
B-2
D851
F-8
D852
G-8
D853
G-8
IC111
C-10
IC112
E-10
IC113
E-9
IC300
A-7
IC361
A-5
IC401
E-7
IC402
D-6
IC801
B-2
IC802
C-3
IC803
B-2
IC804
D-4
IC851
G-9
Q121
B-2
Q132
D-10
Q182
E-11
Q183
E-8
Q361
B-4
Q371
A-4
Q401
D-7
Q731
G-11
Q732
G-10
Q741
F-9
Q801
C-2
Q851
G-9
Q852
H-8
Q853
H-8
• Semiconductor
Location
V7770
V7770
V5550
V5550
V7770
V7770
V7770
V7770
V5550
STR-V5550/V7770
4-4. SCHEMATIC DIAGRAM — MAIN (1/2) SECTION (V5550 MODEL) —
• Refer to page 47 for IC Block Diagrams.
— 19 —
— 20 —
STR-V5550/V7770
4-5. SCHEMATIC DIAGRAM — MAIN (1/2) SECTION (V7770 MODEL) —
• Refer to page 17 for Printed Wiring Board..
• Refer to page 46 to 47 for IC Block Diagrams.
• Refer to page 46 to 47 for IC Block Diagrams.
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— 22 —
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