Sony PMC-DR50 Service Manual page 28
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Also See for PMC-DR50:
- Operating instructions manual (48 pages) ,
- Service manual (54 pages)
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PMC-DR50
5-10. SCHEMATIC DIAGRAM – CONTOROL SECTION –
Q Q
7
3
z
Waveforms (CD SECTION)
(PLAY MODE)
1
1.0 – 1.5Vp-p
IC701 ed
VOLT/DIV : 0.5 V AC
TIME/DIV : 1 µsec
(RFO)
2
(PLAY MODE)
0.6Vp-p
IC701 6
VOLT/DIV : 1 V AC
(FEO)
TIME/DIV : 1 msec
3
(PLAY MODE)
0.7Vp-p
IC701 rg
VOLT/DIV : 20mV AC
(TO)
TIME/DIV : 1 msec
T
E
L
1
3
4
875mVp-p
0.1162MHz
8.6 µsec
IC751 wl
VOLT/DIV : 0.5 V AC
(PCO)
TIME/DIV : 5 µsec
5
4.7Vp-p
22.85 µsec
IC751 el, r;
VOLT/DIV : 1 V AC
(LRCK)
TIME/DIV : 5 µsec
6
271mVp-p
16.9344MHz
w w w
IC751 ua
VOLT/DIV : 0.1V AC
(XTAO)
TIME/DIV : 20 nsec
– 49 –
1
5
6
3
9
4
2
2
9
6
5
1
3
x
a
o
.
i
– 50 –
http://www.xiaoyu163.com
1
5
0
Q
Q
3
7
u
1
6
3
y
http://www.xiaoyu163.com
2
4
8
9
6
3
1
5
1
5
0
8
9
m
c
o
.
– 51 –
2
9
8
9
9
z
Waveforms – CONTROL SECTION –
1
4.8Vp-p
32.768kHz
VOLT/DIV : 1V AC
IC801 rs
TIME/DIV : 10 µsec
2
2.5Vp-p
8MHz
VOLT/DIV : 0.5V AC
IC801 r;
TIME/DIV : 50 nsec
2
4
9
8
2
9
9
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
/
W or less unless otherwise
4
specified.
• U : B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : RADIO (COMMON)
(
) : CD
<
> : REC
[
] : PLAY
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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.
– 52 –
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