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27) |
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31) |
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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.
Note: | Note: |
The components identi- | Les composants identifiés par |
fied by mark 0or dotted | une marque 0sont critiques |
line with mark 0are criti- | pour la sécurité. |
cal for safety. | Ne les remplacer que par une |
Replace only with part | piéce portant le numéro |
number specified. | spécifié. |
|
|
•A: B+ Line.
•Power voltage is dc 1.5V and fed with regulated dc power supply from battery terminal.
•Voltage and waveforms are dc with respect to ground under
no mark : PB
∗: Impossible to measure
•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 : PB
•Waveforms (MODE:PLAY)
1 100mV/div 5∝ s/div | 2 | 0.5V/div 5∝ s/div | 3 5mV/div 1∝ s/div | 4 | 5mV/div 1∝ s/div |
Approx. |
| Approx. | Approx. |
| Approx. |
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IC501 7890 | IC501 ed (RF OUT) (TP528) | IC501 r; (FE) (TP525) |
| IC501 rf (TE) (TP523) |
– 25 – | – 26 – |