Troubleshooting Chart 1-3, On/Off Circuit - Motorola MCS 2000 Service Instructions Manual

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Troubleshooting Chart 1-3, On/Off Circuit

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