– 39 –
– 41 –
– 40 –
Note on Schematic Diagram – Main Section (2/3) – :
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : COMMON (REC)
(
) : PLAY
• 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.
F
: FM
E
: PB
a
: REC
J
: CD
Note on Schematic Diagram – Main Section (3/3) – :
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
U
: B+ Line.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: FM
c
: digital out
1
2
L301
Q301
ATT : 1/10
VOLT/DIV : 1V AC
TIME/DIV : 5
µ
sec
VOLT/DIV : 5 V AC
TIME/DIV : 5
µ
sec
60Vp-p
57kHz
15Vp-p
57kHz
z
Waveforms – MAIN SECTION (2/3) –
5-7. SCHEMATIC DIAGRAM – MAIN SECTION (3/3) –
PMC-DR50
