What to do if my Motorola APX 5000 Two-Way Radio displays an External RAM Fatal Error?
- PPamela FlemingSep 9, 2025
If your Motorola Two-Way Radio displays an External RAM Fatal Error, send the radio to a depot for service.

What to do if my Motorola APX 5000 Two-Way Radio displays an External RAM Fatal Error?
If your Motorola Two-Way Radio displays an External RAM Fatal Error, send the radio to a depot for service.
What to do if my Motorola APX 5000 is dead but the display turns on?
If your Motorola Two-Way Radio is dead but the display turns on, the issue might be with the VOCON Board. In this case, send the radio to a depot for service.
What to do if I have a FLASH ROM Codeplug Checksum Fatal Error on my Motorola APX 5000 Two-Way Radio?
If you are experiencing a FLASH ROM Codeplug Checksum Fatal Error on your Motorola Two-Way Radio, reprogram the codeplug.
What to do if my Motorola Two-Way Radio displays a General Hardware Failure Fatal Error?
If your Motorola Two-Way Radio shows a General Hardware Failure Fatal Error, try turning the radio off, and then turning it back on.
What to do if my Motorola Two-Way Radio displays a DSP RAM Fatal Error?
If your Motorola Two-Way Radio displays a DSP RAM Fatal Error, try turning the radio off, and then turning it back on.
What to do if my Motorola APX 5000 Two-Way Radio displays a DSP ROM Checksum Fatal Error?
If your Motorola Two-Way Radio displays a DSP ROM Checksum Fatal Error, send the radio to a depot for service.
What to do if my Motorola Two-Way Radio displays an ABACUS Tune Failure Fatal Error?
If your Motorola Two-Way Radio displays an ABACUS Tune Failure Fatal Error, send the radio to a depot for service.
What to do if my Motorola APX 5000 displays a Tuning Codeplug Checksum Fatal Error?
If your Motorola Two-Way Radio displays a Tuning Codeplug Checksum Fatal Error, send the radio to a depot for service.
What to do if my Motorola APX 5000 Two-Way Radio displays an External EEPROM Blank Fatal Error?
If your Motorola Two-Way Radio displays an External EEPROM Blank Fatal Error, send the radio to a depot for service.
What to do if my Motorola Two-Way Radio displays a Security Partition Checksum Fatal Error?
If your Motorola Two-Way Radio displays a Security Partition Checksum Fatal Error, send the radio to a depot for service.
| Water Resistance | IP67 |
|---|---|
| Operating Temperature | -30°C to +60°C |
| P25 Phase | P25 Phase 1 and Phase 2 |
| Bluetooth | Yes |
| Frequency Range | 136-174 MHz, 380-470 MHz, 450-520 MHz, 700/800 MHz |
| Audio Output | 0.5W |
| Display | Color |
| Dimensions | 1.5 in |
| Battery | Lithium-Ion |
| Encryption | AES, DES-OFB |
Important safety instructions for RF energy awareness and control.
Outlines what the warranty covers and for how long.
Details responsibilities, remedies, and limitations of liability.
Provides instructions for obtaining warranty service.
Lists exclusions from warranty coverage.
Describes the ASTRO APX 5000/6000/6000Li radios and their features.
Covers preventive maintenance and handling precautions.
Details special precautions for device damage prevention.
Details temperature, power supply, and battery specifications.
Details receiver frequency range, sensitivity, and selectivity.
Details transmitter power, stability, and modulation.
Lists essential test equipment for radio servicing.
Describes how to connect test equipment for performance checks.
Provides instructions for performing tests in radio test mode.
Outlines performance checks for the radio receiver.
Outlines performance checks for the radio transmitter.
Critical adjustment for proper radio operation and channel interference.
Procedures for loading encryption keys into the radio.
Instructions for selecting an encryption key via menu or keypad.
Describes two methods for erasing an encryption key.
Lists error codes displayed during radio power-up.
Lists error codes encountered during radio operation.
Lists possible causes and corrections for receiver problems.
Lists possible causes and corrections for transmitter problems.
Lists possible causes and corrections for encryption problems.











