16. R-442 REMOTE POWER CONTROL.
a. Situation 8.
When performing the R-442 remote power control EPC
step 22, the R-442 power switch is set to ON and the A-RT power switch is
turned to low. The A-RT dial and the AM-1780 power lamps light. The R-442
dial lamp does not light, indicating a NO POWER condition to the R-442.
Another step is performed to confirm this.
Performing EPC step and 24
(audio output) will confirm whether there is power. During steps 22 and 24,
a rushing noise heard in the handset and speaker indicates power. The R-442
dial lamp is burned out. If there is no rushing noise, the EPC steps 22 and
24 indicates the R-442 remote power control circuit is bad. Tracing the R-
442 remote power control circuit identifies the possible bad item(s) (Figure
53).
Figure 53.
R-442 remote power control circuit.
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