Troubleshooting Guide - Panasonic SJ-MR220 Service Manual

remote control. / Keys to be pressed are not in order. / When the 3
keys apportioned to the respective letters as shown below are all
OK, "0" is displayed.
Display position
4th. letter
5th. letter
6th. letter
9. Upon detection of all keys, "000" is shown on the right side of LCD
of the remote control [(GH) area only].
10. Perform below voltage check about the keys come under if you
cannot detect the key.
Main unit's keys Check points
Flat pad (*1) IC501 65~67pin
11. Remove the battery when you exit from this mode.
Note:
Refer to "12. Printed Circuit Board and Wiring Connection Diagram" for the test points.

7. Troubleshooting Guide

Main unit's keys
Flat pad lower rank 3 keys
Flat pad middle rank 3 keys
Flat pad upper rank 3 keys
ON OFF
2.2V 0V
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