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Main unit's keys
After the second key is pressed, the first digit displayed
will change from "
HOLD OFF
VOL+
After the second key is pressed, the second digit
displayed will change from "
VOL-
After the second key is pressed, the third digit displayed
will change from "
5. After all keys have been pressed and there is no abnormality, "E
OOO " will be displayed.
6. Perform below voltage check about the keys come under if it is
not displayed "E OOO ".
Main unit's keys
HOLD
VOL+
VOL-
Note:
Refer to "12. Printed Circuit Board Diagram" for the test points.
7. Remove the battery when you exit from this mode.
7. Troubleshooting Guide
LCD display position and letters
" to "O ".
" to "O ".
Check points
ON
IC201 48pin
0V
TP428
0V
TP421
0V
TP421
0.58V
TP421
1.13V
TP421
1.69V
" to "O ".
OFF
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
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