Sony STR-DE135 Service Manual ▷ View online
– 9 –
– 10 –
5-1.
NOTES FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
Indication of transistor.
B
These are omitted.
C
E
Q
• Waveforms
– MAIN Board –
– MAIN Board –
1
IC1
!¢
(XO)
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.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
•
U
: B+ Line.
•
V
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
no mark : FM
• 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
1.6 Vp-p
4.33 MHz
– DISPLAY Board –
1
IC201
#∞
(X2)
5.4 Vp-p
4.19 MHz
B
These are omitted.
C
E
Q
STR-DE135
C757
(AEP,UK)
C707
(AEP,UK)
– 11 –
– 12 –
5-2.
PRINTED WIRING BOARD – MAIN Board –
• See page 8 for Circuit Boards Location.
D421
F-5
D710
I-11
D721
H-5
D722
H-5
D723
H-6
D724
I-5
D801
I-7
D802
D-12
D804
I-7
D820
C-12
D821
C-12
D822
C-12
D823
C-12
D951
A-10
D952
A-10
D953
A-10
D954
A-10
D955
A-10
D956
A-10
IC1
D-1
IC401
C-4
IC403
E-3
IC701
E-7
IC801
C-6
IC802
C-6
IC803
B-7
IC804
C-7
IC950
A-7
Q303
E-3
Q304
D-3
Q401
F-5
Q402
F-5
Q451
E-5
Q452
F-5
Q701
G-8
Q702
G-8
Q703
H-8
Q704
F-8
Q710
I-12
Q720
G-7
Q721
I-5
Q722
H-6
Q723
I-5
Q751
C-8
Q752
D-8
Q753
E-8
Q754
C-8
Q770
B-7
Q801
H-7
Q802
C-13
Q951
A-7
• Semiconductor
Location
Ref. No.
Location
(Page 17)
(Page 24)
(Page
23)
(Page 23)
(Page 15)
(Page
23)
(Page
23)
STR-DE135
5-3.
SCHEMATIC DIAGRAM – MAIN Board (1/2) – •
See page 10 for Waveform.
•
See page 21 for IC Block Diagrams.
– 13 –
– 14 –
(Page
25)
(Page
25)
(Page 20)
(Page 19)
(Page
25)
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
STR-DE135
– 15 –
– 16 –
5-4.
PRINTED WIRING BOARDS – PANEL Section – • See page 8 for Circuit Boards Location.
D201
A-3
D202
A-3
D203
A-3
D204
B-3
D223
A-10
D224
A-10
IC201
B-6
IC202
A-1
IC203
B-11
Q201
B-3
Q202
B-3
• Semiconductor
Location
Ref. No.
Location
(Page 11)
(Page 17)
(Page
17)
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