Name: MVME167PA-36SE MOTOROLA Single-Board
Price: 5377 CNY
Availability: InStock

Description

The MVME167PA-36SE is a high-reliability VMEbus single-board computer, typically equipped with a high-performance microprocessor (MC68040 or MC68060), multi-capacity memory modules (DRAM, SRAM, Flash), VMEbus A32/D64 interface, and multiple peripheral ports. Troubleshooting should be conducted in a systematic manner—starting with basic hardware checks, then progressing to functional validation and advanced diagnostics—to efficiently identify and resolve issues. Below are targeted troubleshooting methods for common failure scenarios.

1. Power-Up Failure (Module Fails to Initialize)

Symptom

No front-panel status LEDs (e.g., RUN, POWER) illuminate after chassis power-on.

On-board debugger/firmware does not load; no response from serial console port.

Troubleshooting Steps

Verify Power Supply to Chassis

Check if the VME chassis power supply outputs meet specifications (typically +5V, +12V, -12V for MVME series). Use a multimeter to test voltage at the chassis P1 connector (power pins) — ensure no voltage fluctuations or drops (e.g., +5V should remain within 4.75–5.25V).

If voltage is abnormal, replace the chassis power supply or resolve power distribution issues (e.g., loose power cables).

Inspect VMEbus Connections

Power off the chassis, then re-seat the MVME167PA-36SE module firmly in the VME slot to ensure proper contact between the module’s P1 (power) and P2 (signal) connectors and the chassis backplane.

Check for bent, broken, or oxidized pins on P1/P2 connectors. Use a magnifying glass to inspect for corrosion; clean oxidized pins with electrical contact cleaner (if needed) and dry thoroughly before re-installing.

Check for Short Circuits or Component Damage

Visually inspect the module’s circuit board for signs of damage: burnt components (e.g., capacitors, voltage regulators), leaking electrolytic capacitors, or loose solder joints.

If a short circuit is suspected (e.g., chassis power shuts down immediately after module installation), disconnect all peripheral cables (e.g., serial, Ethernet) and re-test. If the issue persists, the module’s power regulation circuit may be faulty—contact technical support for repair.

Validate Backup Battery Status

The MVME167PA-36SE includes a lithium backup battery for SRAM/NVRAM and real-time clock. A dead battery may not directly cause power-up failure, but low voltage can disrupt firmware initialization.

Use a multimeter to test battery voltage (rated 3.6V; replace if <3.0V). Ensure power is disconnected before removing the battery to avoid shorting the circuit.

MVME167PA-36SE pdf

MVME167PA-36SE

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