Sony PMC-DR50L Service Manual page 34

PMC-DR50L/DR70L
5-10. SCHEMATIC DIAGRAM – CONTOROL SECTION –
r Waveforms (CD SECTION)
(PLAY MODE)
1
1.0 – 1.5Vp-p
IC701 #£
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 $∞
VOLT/DIV : 20mV AC
(TO)
TIME/DIV : 1 msec
4
875mVp-p
0.1162MHz
8.6 µ sec
IC751 @ª
VOLT/DIV : 0.5 V AC
(PCO) TIME/DIV : 5 µsec
5
4.7Vp-p
22.85 µ sec
IC751 #ª, $º
VOLT/DIV : 1 V AC
(LRCK)
TIME/DIV : 5 µsec
6
271mVp-p
16.9344MHz
IC751 &¡
VOLT/DIV : 0.1V AC
(XTAO)
TIME/DIV : 20 nsec
– 55 – –56 – – 57 –
r Waveforms – CONTROL SECTION –
1
4.8Vp-p
32.768kHz
VOLT/DIV : 1V AC
IC801 $™
TIME/DIV : 10 µsec
2
2.5Vp-p
8MHz
VOLT/DIV : 0.5V AC
IC801 $º
TIME/DIV : 50 nsec
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.
– 58 –