Read Sony SA-WSRD15 Service Manual online
SA-WSRD15
7
7
SA-WSRD15
•
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.
•
f
: internal component.
•
2
: nonflammable resistor.
•
: 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
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
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.
•
f
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
(
under no-signal (detuned) conditions.
no mark : TUNER
(
) : VIDEO mode
∗
: Imposible to measure
•
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.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
F
: TUNER
J
: SPDIF
f
: VIDEO
•
The signal path in diagram requires the thing whose in-
put function is a tuner.
put function is a tuner.
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
•
Indication of transistor
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
•
Waveforms
– MAIN Board –
20.8
µ
s
4 Vp-p
5
IC503
wa
(LRCK)
2 V/DIV, 10
µ
s/DIV
20.8
µ
s
4.2 Vp-p
q;
IC506
ql
(LRCKO)
2 V/DIV, 10
µ
s/DIV
4
IC503
w;
(BCK)
2 V/DIV,100 ns/DIV
324 ns
4.1 Vp-p
2
IC108
qf
(XFSOOUT)
1 V/DIV, 10 ns/DIV
20.6 ns
3.2 Vp-p
1
IC109
qf
(XFSOOUT)
1 V/DIV, 10 ns/DIV
20.6 ns
3.2 Vp-p
7
IC501
qd
(XOUT)
1 V/DIV, 100 ns/DIV
200 ns
3.2 Vp-p
3
IC503
ql
(CKOUT)
2 V/DIV, 50 ns/DIV
9
IC506
qf
(SCKOUT)
2 V/DIV, 50 ns/DIV
8
IC506
qs
(MCLK2)
2 V/DIV, 20 ns/DIV
qa
IC506
w;
(BCKO)
2 V/DIV,100 ns/DIV
324 ns
4.2 Vp-p
81.5 ns
4.2 Vp-p
82 ns
4.4 Vp-p
82 ns
4.2 Vp-p
71 ns
4.1 Vp-p
6
IC503
1
(XOUT)
2 V/DIV, 50 ns/DIV
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