Motorola GTX/LCS 2000 Service Manual page 65

Check U0941, Q0951,
Q0952,D0951-D0970.
Check R915-922,
R955, and R958.
Troubleshooting Flow Chart
for Control Head
8-8 Troubleshooting
Start
No
Is the display
on?
Yes
No
Do the LEDs
light?
Yes
No
Is backlight OK?
Yes
No
Is volume OK?
Yes
No
Is keypad
OK?
Yes
End
Is SPI Yes
communication
OK?
No
Check U0941,
Q0942-4,
D0942-4.
Check U0942, and U0970.
Check LCD, U0932,
Q0953, and ZEBRA
connectors.
Check controller.