WM-GX670/GX674
— 19 — — 20 —
6-3. SCHEMATIC DIAGRAM (1/2)
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.
• U : B+ Line.
• C : panel designation.
• Power voltage is dc 1.5 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM/AM, STOP (TAPE)
( ) : FM
[ ] : AM
< > : PLAY (TAPE)
• 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.
• Signal path.
F : FM
E : PLAY (TAPE)
a : REC (TAPE)
• Waveform
51.7kHz
1
TP32
10µsec/div
5V/div
12
A
B
C
D
E
F
G
H
I
3456789101112131415161718192021
— 21 —
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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