Wpic Test - Motorola MTH500 Service Manual

Perform the following:
1. Set the unit to the Open loop test at a frequency of 390MHz.
2. Read the value of WPIC 1 9 register by using TetraCom. It has 8 b its.
Change the hexadecimal value of WPIC 1 9 t o switch the 5-th bit from 0 to 1.
3. U
Perform the GCAP test.
If the problem still exists
replace WPIC U503.
68P02963C70-O

WPIC Test

This test should be started in accordance to Open Loop Power test.
sing a scope o bserve output data voltage on Test Points 500,501.
voltage (0.4-0.8Vp-p)
observed during
Measure:
1. 2.775_WPIC dc voltage on C572 (C516, C519, C555,
C552, C549, C573, C547, C535, C502, C542.
2. V3_2.775V on C515.
No
Measure TXE signal
(0.5-2.3Vdc) during Tx slot on R514.
Is the TXE signal OK?
Verify the REDCAP2 U401 functionality,
replace if faulty, repeat WPIC test, if the
problem still exists replace WPIC U503.
Is data Replace WPIC U503.
Y e s
If the Open Loop Power problem
exists replace LNODCT U803.
Tx slot? Repeat the Open Loop power test.
No
Are voltages
(2.6-2.9Vdc)
OK?
Y e s
Y es
No
Troubleshooting
TetraCom Commands:
WPIC 1 9
Read the register value
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