Motorola EP350 Basic Service Manual

8-2 Troubleshooting Tables: Troubleshooting Table for Receiver
8.2 Troubleshooting Table for Receiver
Table 8-19. lists the possible causes of, and corrections for, receiver problems.
Symptom Possible Causes
Corrective or Test
(Measurements at Room Temperature)
Radio Dead; Display Does
Not Turn On
1. Dead Battery Replace with charged battery.
2. On/Off Switch Send radio to nearest Motorola Service Centre.
3. Regulators
4. Regulator fault
Radio Dead; Display Turns
On
Transceiver Board Send radio to nearest Motorola Service Centre.
No Receive Audio, or
Receiver Does Not Unmute
Programming 1. Does the transmitted signal match the receiver
configuration (PL, DPL, etc.)?
2. With the monitor function enabled, can the radio be
unmuted?
Audio Distorted or Not Loud
Enough
Synthesizer Not On
Frequency
Send radio to nearest Motorola Service Centre.
Poor RF Sensitivity 1. Synthesizer Not on
Frequency
Send radio to nearest Motorola Service Centre.
2. Antenna Switch/
Connector
3. Receiver Front End
Tuning
Radio Will Not Turn Off Transceiver Board Send radio to nearest Motorola Service Centre.

Motorola EP350 Specifications

General

Channel Capacity	16 channels
IP Rating	IP54
Drop Resistance	1.2 meters
Frequency Range	VHF: 136-174 MHz, UHF: 403-470 MHz
Battery Life	Up to 11 hours
Power Supply	7.5 V (Nominal)
Waterproof	Splashproof
Dimensions	127.6 x 62 x 42 mm (with standard battery)