Motorola GP68 Service Manual page 59

GP68 Portable Radios Service Manual
NO
FIX
J801 CONNECTION
CONNECTION
March, 1997
START
APPLY POWER TO RADIO AND
TURN ON
COMPLETE
DISPLAY
YES
NO
J801
KEYPAD
WORKING?
OK?
YES
YES
YES
BACK LIGHT
WORKING?
NO
DONE
LEDS
WORKING?
YES
R801, R802, R803
WORKING?
YES
Q801
WORKING?
YES
CHANGE
LCD BOARD
YES
NO
J801
CONNECTION
OK?
NO
NO
CLOCK
WORKING?
YES
NO
R811, R812, R813,
R816, R817 WORKING?
YES
NO
NO
NO
6881086C09-O
Troubleshooting
Troubleshooting Charts
NO
CHANGE
R814, R815,
BAD
C801 WORKING?
COMPONENTS
YES
CHANGE
BAD
COMPONENTS
CHANGE
U801
CHANGE
LEDS
CHANGE
BAD
COMPONENTS
CHANGE
Q801
CHANGE
LCD
BOARD
Troubleshooting Flow Chart
for Display Board
5-7