Motorola EP350 Basic Service Manual

Chapter 4 Performance Checks
4.1 General
These radios meet published specifications through their manufacturing process by utilizing high
accuracy laboratory-quality test equipment. The recommended field service equipment is as accurate
as the manufacturing equipment with few exceptions. This accuracy must be maintained in
compliance with the manufacturer’s recommended calibration schedule.
4.2 Power–Up Self Test
Whenever the radio is turn on, it initiates a self-test routine which checks the RAM, EEPROM
hardware and EEPROM checksum. If Self Test passes, the green LED flashes once and a Self-Test
Pass Tone is generated. If unsuccessful, the red LED flashes rapidly and a Self-Test Fail Tone is
heard.
4.3 LCD/LED/Button/Volume Knob Test Mode
1. Make sure the radio is turned off.
2. Turn on the radio and immediately press 3 times. The LED turns solid amber. The LCD
displays the following indication (Figure 4-1) andthe backlight is activated.
3. The radio will operate as shown in Table 4-1 if any key is pressed while in test mode.
Figure 4-4. LCD Indication
Table 4-4. Radio Operation in Test Mode
Button LED LCD Indication Backlight Tone
, Right
Solid Green • ON when button is
pressed.
• OFF following
button released
(after a short period
of inactivity).
, Left
Solid Red – same as above –

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)