Motorola APX 2000 Detailed Service Manual

5-24 Troubleshooting Charts: Volume Set Error (APX 2000/ APX 4000 (Two Knobs))
5.7 Volume Set Error (APX 2000/ APX 4000 (Two Knobs))
Volume Set Error
Voltage Level
correct and varies?
Verify all connectors from J2302
to frontkit flex are good.
Check Volume Switch
circuitry
No
Verify operation of volume
control by using Button Test flowchart.
Use a voltmeter to measure voltage at
R2202 while adjusting the volume control
from min to max. Max measured voltage
should be ~2.775V.
Yes

Motorola APX 2000 Specifications

General

IP Rating	IP67
Operating Temperature	-30°C to +60°C
GPS	Optional
Bluetooth	No
Frequency Range	700/800 MHz
Power Output	1-5 W (VHF), 1-3 W (700/800 MHz)
Channels	Up to 1, 000
Battery Life	Up to 10 hours (digital)
Digital Protocol	APCO P25
Frequency	VHF: 136-174 MHz, UHF: 380-470 MHz, 700/800 MHz: 764-870 MHz
Power	1-3W (700/800 MHz), 1-5W (VHF)