18
Symptom - 2 No LED display
/
Keys do not work
Check the Digital P.C.B.
connector (XP82)*3
voltage.
Check the FFC cable *4
connecting Digital P.C.B. and
Front panel P.C.B.
Exchange the Front panel P.C.B.
Exchange the Digital P.C.B.
Exchange the FFC cable.
OK
OK
NG
NG
*3
CHECK POINT LOCATION
*4
VOLTAGE DATA (measurement value)
*3
1
5.1V
2
GND
3
5.1V
4
2.7V
5
2.8V
6
3.0V
7
5.1V
8
5.1V
1
1
88