Motorola MCS 2000

December 6, 2004 68P81083C20-D
9-6 Troubleshooting Troubleshooting Chart 1-3, On/Off Circuit
Troubleshooting Chart 1-3, On/Off Circuit
9.3V
on U0501-5
Check U0500,
CR0500, C0503
Check U0501, Q0500,
C0508, R0503, R0504
No
Yes
No
Pulse
on U0510-5
13.6V
on Q0511-6
5V
on U0500-2
Yes
Yes
Yes
0V
on U0510-6
No
Press
On/Off Switch
Check U0510,
R0512, C0511
No
Check CR0510,
Q0510, Q0511
No
GOTO
Clock Distribution
Chart 1-9
Yes
R0518
OK?
Repair or
Replace R0518
No
Yes
GOTO
Control Head
Chart 1-8
Note:
Refer to IC Troubleshooting Procedure
before replacing any ICÕs.
MAEPF-25949-O
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