21
WM-GX410
Common Note on Schematic Diagram:
• 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 W and
1
/
4
W or less unless otherwise
specified.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 3V 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 : FM
(
) : AM
< > : REC
[
] : PB
• 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
f
: AM
E
: PB
a
: REC
N
: MIC
• Abbreviation
CND
: Canadian
EA
: Saudi Arabia
CH
: Chinese
JEW
: Tourist
5E
: Indication of country of origin
9E
: No Indication of country of origin
– MAIN SECTION –
2 Vp-p
21
µ
sec
– DISPLAY SECTION –
1.5Vp-p
75KHz
IC301
qa
OSC
VOL/DIV : 0.02 V AC
TIME/DIV : 0.5 msec
2
Q334
C
REC mode
VOL/DIV : 0.5 V AC
TIME/DIV : 10
µ
sec
3
IC701
1
XOUT
VOL/DIV : 0.5 V AC
TIME/DIV : 5
µ
sec
1
0.04Vp-p
1.5msec
Ver 1.1
