Motorola APX 7000 Detailed Service Manual

5-26 Troubleshooting Charts: VOCON TX Audio Error
5.11 VOCON TX Audio Error – Tweeter Speaker Failure
No audio out of Tweeter
Speaker
Isolate Location of
Failure, Replace
Front LCD and
Speaker Unit
Is Tweeter
Speaker
Functional
Replace front LCD
and Speaker Unit
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
Yes
No
No
Yes
Yes
No
No
Yes
Is an Audio
Signal Present
Measure PCB
Pads at P6401
Inspect PreAmp
Filter
Are Values,
Placement, and
Solder Connections
ok
Is Audio Signal
Present
Repair or Replace
Parts
Replace VOCON
Board
No
Yes
Yes
No
Repair Pogo Pins
P6401
Replace VoCon
Yes
No

Motorola APX 7000 Specifications

General

Digital Technology	P25 Phase 1 and Phase 2
Emergency Button	Yes
Frequency Range	136-174 MHz (VHF), 380-470 MHz (UHF Range 1), 450-520 MHz (UHF Range 2), 764-870 MHz (700/800 MHz)
Display	Color LCD
Encryption	AES, DES
Water Resistance	IP67
GPS	Yes
Bluetooth	Yes
Operating Temperature	-30°C to +60°C
Weight	391 g (with standard battery)