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Key Technical Specifications
- Model: MVME166-11A
- Part Number: 01-W3837F-01F
- Brand: Motorola
- CPU: MC68040, 33 MHz
- Memory: 4 MB
- Bus Interface: VME, A32/D32
- I/O: 4 SIO, 1 PIO
- Communications: Ethernet, SCSI, VSB interface
- Product Type: Single-board computer
- Application: Industrial control and embedded VME systems
- Condition: Surplus or used tested, depending on source
- Availability: Obsolete, limited stock
Product Introduction
Motorola MVME166-11A 01-W3837F-01F is a VMEbus single-board computer built around the MC68040 33 MHz processor. It is used in legacy industrial control, test, and embedded systems that still depend on Motorola MVME hardware.
This board is chosen for exact replacement in older VME racks where system continuity matters more than platform upgrades. It combines CPU, memory, serial I/O, Ethernet, and SCSI on one board, so compatibility checks on revision and rack configuration are critical.
- MVME166-11A 01-W3837F-01F
- MVME166-11A 01-W3837F-01F
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No boot activity | Missing rack power, bad seating, or board fault | ✅ High | Measure backplane rails and reseat the board | Verify power and connector condition first |
| Boot halts early | Corrupt firmware, memory fault, or configuration mismatch | ✅ High | Read boot ROM messages and compare with a known-good unit | Inspect firmware and memory before replacement |
| Ethernet link absent | Port fault or network configuration issue | ✅ Medium | Check link LED and test cable on a known-good switch port | Confirm cabling and port settings first |
| Serial ports unresponsive | Wrong console settings or damaged SIO path | ✅ Medium | Verify terminal baud rate and test each serial port | Check console setup before blaming the board |
| SCSI device not detected | Cable, terminator, or device issue | ✅ Medium | Swap SCSI cable and verify termination | Rule out external SCSI hardware first |
| Random resets under load | Aging components or thermal instability | ✅ High | Run a soak test and monitor temperature | Replace if resets repeat during extended operation |
Contact technical support with photos of the board, rack slot, jumper settings, and boot diagnostics if the fault is still unclear.
Frequently Asked Questions
Q: Is this a direct replacement for every MVME166-11A system?A: No. It only works as a true replacement when the rack, backplane, and revision match the original system. With old VME hardware, the details matter.
Q: Can I hot-swap this board?A: No. Shut the system down first. Pulling or inserting it live can damage the board and the backplane.
Q: Will my old configuration transfer automatically?A: Not always. If the original unit used jumpers, switches, or console settings, copy those exactly before installation.
Q: What makes this board different from a generic VME SBC?A: It is a Motorola MVME family board with a specific MC68040-based architecture, onboard memory, and legacy I/O set. That makes it useful for exact-fit replacement in existing systems.
Q: Why is this usually sold as surplus?A: Because the MVME166-11A is obsolete. Available stock usually comes from excess inventory, recovered boards, or tested pull units.
Q: How do I confirm compatibility before ordering?A: Match the full model number and part number, inspect the connector style, and verify the rack and software environment before you buy.
Q: Why is the price lower than new factory hardware?A: Factory-new production is generally not available for this class of Motorola hardware. Pricing reflects surplus supply, test status, and warranty terms.
