Panasonic SJ-MJ88 User Manual
Main unit’s keys
LCD display position and letters
After the third key is pressed, the second digit displayed
will change from “ ” to “O ”.
will change from “ ” to “O ”.
VOL+
After the second key is pressed, the third digit displayed
will change from “ ” to “O ”.
will change from “ ” to “O ”.
VOL-
HOLD OFF
The first digit displayed will change from “ ” to “O ”.
5. After all keys have been pressed and there is no abnormality, “T OOO ” will
be displayed.
6. Perform below voltage check about the keys come under if it is not displayed
“T OOO ”.
Main unit’s keys
Check points
ON
OFF
HOLD
TP428
0V
2.2V
IC201 48pin
0V
2.2V
TP421
1.13V
2.2V
TP421
1.69V
2.2V
VOL+
TP421
0V
2.2V
VOL-
TP421
0.58V
2.2V
Note:
Refer to “10. Printed Circuit Board Diagram” for the test points.
Refer to “10. Printed Circuit Board Diagram” for the test points.
7. Remove the battery when you exit from this mode.
7. Troubleshooting Guide
33