Schematic Diagram - Bd Section - Sony PMC-MD55 Service Manual

PMC-MD55
6-9. SCHEMATIC DIAGRAM – BD Section – • See page 99 for Waveforms. • See page 102 for IC Block Diagrams.
– 53 –
(Page 56)
– 54 –
(Page 61)
(Page 61)
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
(Page 61)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
specified.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
– 55 –
(Page 54)
• A : B+ Line.
• Waveforms are taken with a oscilloscope.
• Voltages and waveforms are dc with respect to ground Voltage variations may be noted due to normal produc-
under no-signal conditions. tion tolerances.
1 / W or less unless otherwise no mark : MD STOP • Circled numbers refer to waveforms.
4
( ) : MD PLAY • Signal path.
< > : MD REC E : MD PLAY
∗
: Impossible to measure j
: MD REC (ANALOG)
q
• Voltages are taken with a VOM (Input impedance 10 MΩ). : MD REC (DIGITAL)
Voltage variations may be noted due to normal produc-
tion tolerances.
– 56 –