Sony XTL-75V Service Manual ▷ View online
17
17
6-3.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
Note on Schematic Diagram:
• 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.
•
C
: panel designation.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground in
color-bar signal input.
• 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
: AUDIO
c
: VIDEO
• Circuit Boards Location
G board
D board
E board
B board
A board
C board
PANEL board
18
18
XTL-75V
6-4.
PRINTED WIRING BOARD – B Board –
•
See page 17 for Circuit Boards Location.
• Semiconductor
Location
(Side B)
(Side B)
Ref. No.
Location
D702
A-4
D703
B-5
D704
B-3
D705
B-3
D706
B-4
D708
B-7
IC703
A-7
Q701
A-3
(XT-991V)
R799
R798
(Page 20)
(Page 20)
19
19
XTL-75V
6-5.
SCHEMATIC DIAGRAM – B Board –
(Page 22)
(Page 22)
20
20
XTL-75V
6-6.
PRINTED WIRING BOARD – A Board (Side A) –
•
See page 17 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D104
A-9
D111
D-1
D508
E-9
D510
F-11
IC101
B-8
IC102
D-2
IC103
H-2
IC104
B-9
IC105
A-11
IC106
E-3
IC107
H-1
IC108
H-2
IC110
F-2
IC111
E-3
IC112
F-9
IC113
C-3
IC501
E-11
IC503
C-11
Q105
D-3
Q106
F-8
Q110
C-7
Q502
C-9
Q503
C-9
Q504
C-9
Q510
E-10
Q511
D-10
Q512
F-10
Q514
E-9
Q516
D-6
Q517
D-6
(Page 28)
(Page 26)
(Page 25)
(Page 25)
(Page 25)
(Page 18)
(Page 18)
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