Motorola APX 2000 Detailed Service Manual

Troubleshooting Charts: DC Supply Failure 5-15
5.4 DC Supply Failure
DC Supply 5 Volt Failure
V_SW_5
Is fuse intact
(not blown)?
Replace Fuse
Verify UNSW_B+ at
test point: F_UNSW_B+
Verify if USB accessory is
shorting VBUS line.
Verify L200, C202
and C203 is good
Replace accessory
or cable
Verify SW_B+
at C6565
Check Q6502 and
Q6508 for damage
Is 6 < V < 9
Verify Q6501
Measure BGAP_COMP
voltage at R6543
Is 2.2 < V < 2.7
Check U6505 circuitry. If good,
change U6505
Check BGAP_COMP circuitry.
Replace defective part
Is radio current
>100mA
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No

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)