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With "KEY" displayed, press
keys and set the HOLD switch to OFF (no order). Then, "KEY OK"
will be displayed.
Note:
If "KEY OK" is not displayed, check the following voltage for each key.
Key
Test point
IC201-35 pin
HOLD
TPX110
TP307
VOL +
TP307
VOL -
TP307
TP307
To exit the main unit's key check mode, remove the battery.
Note:
Refer to "Printed Circuit Board and Wiring Connection Diagram" for the test points.
6. Troubleshooting Guide
ON
OFF
0V
2.4V
2.4V
0V
0V
2.4V
0.6V
2.4V
1.2V
2.4V
1.8V
2.4V
15
,
,
, VOL (+/-)
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