Motorola APX 7000 - Advanced Features; Military Grid Reference System (MGRS) Coordinates; Accessing the Outdoor Location Feature

Troubleshooting Charts: VOCON TX Audio Error 5-27
VOCON TX Audio Error – External Speaker Audio Out Failure
No audio out of External
Speaker
Measure Speaker
Lines on GCAI
Connector Using
Oscillscope
Examine VOCON
and GCAI
Connector on
Expansion Board
View SSI Signals
at R1004, R1005,
and R1006 Using
an Oscilloscope
Inspect Connector
to J1001 on
VOCON board
View SSI Audio
Data at R3015
Using an
Oscilloscope
Is Data Present
Is Connector Damaged
or Soldered Improperly
Replace or Repair
Connector
Replace RF Board
Is Data Present
Replace VOCON
Board
Measure PreAmp
Filter at R6416
and R6417
No
Yes
Yes
No
No
Yes
Is an Audio
Signal Present
Inspect Connector
J4001
Inspect PreAmp
Filter
Are Values,
Placement, and
Solder Connections
ok
Repair or Replace
Parts
Replace VOCON
Board
No
Yes
Yes
No
Replace or Repair
Connector
Replace VoCon
Is Either Connector
Damaged or Soldered
Improperly
Replace
Expansion Board
Replace or Repair
Connector
Is External
Speaker
Functional
Replace
Expansion Board
Audio Signal
Present
Replace External
Speaker
Replace Housing
and GCAI Board
Yes
No
Replace Housing
and GCAI Board
Is External
Speaker
Functional
YesNo
No
Yes
Yes
No
Is Connector Damaged
or Soldered Improperly
No
Yes