Motorola APX 2000 Detailed Service Manual

Troubleshooting Charts: Power-Up Failure 5-9
Power-Up Failure – Low VBUS2 Voltage
Low
VBUS2 Voltage
Measure V_SW_5
at C6567.
Measure VBUS2
Supply Voltage
at R6536
Repair Incorrect Parts
Replace Part
Replace Board
5.1 < V < 5.6?
Is Part Placed
Correctly
Are Parts Solder
Connections and
Placement Correct
Check Placement
of Q6508
Proceed to Low
SW5 Voltage Flow
Chart
Yes
Yes
Yes
Yes
No
No
No
Inspect U6503 and
Supporting Circuitry

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)