Sony M-98V, Service Manual, Page: 13 / 30

– 17 – – 18 – – 19 –
M-98V
6-4. SCHEMATIC DIAGRAM • Refer to page 20 for IC Block Diagrams.
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 /
4
W or less unless otherwise
specified.
• % : indicates tolerance.
• ¢ : internal component.
• C : panel designation.
• U : B+ Line.
•
H
: adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : REC
(
) : PB
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
• Signal path.
E
: PB
a : REC
• Waveforms (PB mode)
1
2
1.5Vp-p
IC802
3
0.44Vp-p
4MHz
IC701
8
20µsec