Motorola ASTRO XTSTM 4000, Detailed Service Manual

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6871620L01-C May 28, 2008
Troubleshooting Charts: Power-Up Failure 5-3
5.3 Power-Up Failure–Page 1
Verify Standard
Bias in
Table 4-2
Standard
Bias OK?
Probe
32.768 kHz
Clock at C1303
Verify intergrity
of C1305 &
C1306
Signal
Present?
Signal may appear
for a very short period
of time (50 ms). Use
an oscilloscope with
trigger to capture signal
Isolate and
Repair Problem
See DC Supply
Failure flowchart
Radio
Power-Up
Failure
1
2
No
Yes
No
Yes