WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Micro |
| Part Number | 92-005649-00X |
| Associated Part Number | 20-005650-02 |
| Product Type | ISA single-board computer / industrial CPU board |
| Bus Architecture | ISA |
| Primary Function | Provides CPU and industrial-PC control functions in legacy equipment |
| Reported Equipment Association | MPM Accuflex production equipment; verify against the installed machine BOM |
| Reported OEM Association | KLA-Tencor spare-parts channels; verify actual board labels and system ownership |
| Board Revision | Revision varies by physical unit; market listings show examples including Rev C-B-01, Rev E-02, and Rev F-02 |
| Processor | Not reliably verified from a manufacturer datasheet; one listing claims a 450 MHz CPU, but this must be verified from the actual CPU/module label |
| Memory | Verify installed RAM modules, capacity, and type from the physical board |
| Storage Interface | Some listings refer to a CPU kit with hard drive and cables; confirm exact kit contents before purchase |
| Operating System | Machine-specific legacy software; must be backed up and validated before replacement |
| Form Factor | Industrial SBC format; verify board dimensions, ISA edge connectors, mounting points, and I/O bracket layout |
| Lifecycle Status | Obsolete / legacy industrial computer hardware |
Available listings consistently identify 92-005649-00X as a Texas Micro ISA single-board computer associated with 20-005650-02, with reported use in MPM Accuflex equipment. Secondary-market listings also show the same number under Trenton and KLA-Tencor channels, plus multiple board revisions. Therefore, the part number alone is not enough to establish exact motherboard revision, CPU speed, RAM, BIOS, hard-drive configuration, or tool compatibility. Match the full board label and revision before purchase.
Product Introduction
The Texas Micro 92-005649-00X is a legacy ISA single-board computer used as the CPU layer in industrial equipment. It is associated with part number 20-005650-02 and is commonly linked to MPM Accuflex production systems, where the board runs machine software, communicates with ISA expansion hardware, and supports the control architecture of the installed equipment.
This is not a generic office-PC motherboard. An exact replacement requires matching the physical board revision, ISA connector layout, BIOS, memory, storage device, operating system, application software, machine I/O cards, and cabling. A board that boots can still be wrong if it cannot communicate with the original ISA hardware or machine peripherals.
92-005649-00X
92-005649-00X
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Machine PC has no power or no boot indication | Failed external PSU, loose harness, blown fuse, failed CPU board, power-switch circuit fault | ⚠️ Medium | Measure the industrial PC supply rails at the motherboard power connector using the equipment schematic; inspect fuses and connector condition | Confirm correct supply rails and polarity before replacing the CPU board |
| Board powers up but no video appears | Display cable fault, wrong monitor type, failed VGA interface, corrupted BIOS, board failure | ⚠️ Medium | Verify monitor power and cable first; test with a known-good compatible monitor and record beep codes or LED activity | Do not condemn the SBC until display hardware and BIOS behavior are checked |
| System begins boot but stops with disk error | Failed hard drive, loose IDE/storage cable, corrupt boot media, BIOS battery issue, software corruption | ❌ Low | Record the exact boot message; reseat storage and ribbon cables with power removed; check drive spin-up and BIOS detection | Back up the drive immediately if it is still readable. Replace storage or restore image before replacing the CPU board |
| Machine software boots but cannot control hardware | ISA I/O card fault, loose ISA card, ribbon-cable failure, machine interface power issue, driver/configuration mismatch | ❌ Low | Inspect and reseat ISA expansion cards and associated cables; check device drivers and I/O diagnostics | Diagnose the I/O stack before replacing the main CPU board |
| Controller freezes after operating for several minutes | Aging capacitors, overheating, fan failure, unstable power supply, marginal RAM, cracked solder joint | ✅ High | Monitor board temperature and supply rails; inspect CPU fan and heatsink; run a controlled memory or burn-in test where permitted | Correct power and cooling first. A fault that follows the board supports repair or replacement |
| BIOS settings reset after power-off | Failed RTC/CMOS battery, corrupted configuration, NVRAM fault | ⚠️ Medium | Check date/time and BIOS settings after a controlled power cycle; inspect battery location and measure it where appropriate | Replace the battery using approved ESD and machine-service procedures, then document BIOS settings |
| Replacement board powers up but will not boot the machine image | Different BIOS, board revision mismatch, incompatible CPU/chipset, storage controller mode mismatch, missing hardware driver | ✅ High | Compare BIOS version, board revision, CPU module, memory, ISA hardware inventory, and storage interface with the old board | Do not overwrite the only production drive. Clone and test the image before commissioning |
| Replacement board boots but machine I/O is wrong | Different ISA addressing, interrupt conflicts, driver issue, incorrect jumpers, missing expansion card configuration | ✅ High | Compare jumper/DIP-switch settings, ISA card locations, I/O addresses, IRQs, and configuration files with the original system | Copy the original configuration exactly before testing automatic motion |
| Board does not seat or ISA cards cannot align | Wrong form factor, board revision difference, mounting-hole mismatch, backplane/cage mismatch | ✅ High | Compare board dimensions, edge connectors, rear I/O, mounting points, and ISA slot alignment with the removed board | Do not force-fit. Obtain the correct revision or use an engineered retrofit |
| New board does not solve the failure | Root cause is power supply, storage, RAM, ISA I/O card, cable, or software | ❌ Low | Reinstall the original board if safe and compare behavior; test each subsystem methodically | Avoid repeated board swaps. Isolate the failed subsystem with measurements and documented tests |
❗ Before touching the board, clone the storage drive if it is readable. A replacement ISA SBC can be physically correct but boot differently due to BIOS or storage-controller variation. The machine hard drive often contains the only copy of application software, I/O drivers, calibration data, recipes, and hardware configuration.
Photograph the board from both sides, every revision sticker, CPU label, RAM module label, BIOS ROM label, jumpers, ISA card locations, ribbon cables, drive cables, and power connectors. Record BIOS settings and capture boot-screen messages. Do not remove an ISA card and assume it will work in a different slot; address and IRQ conflicts are common in legacy systems.
If you need technical support, provide full board and revision photos, the associated 20-005650-02 label, machine model, boot error, power-rail readings, BIOS screen, storage-drive details, installed ISA cards, and a copy of the original disk image if available.
Frequently Asked Questions
What is the Texas Micro 92-005649-00X?
The Texas Micro 92-005649-00X is an ISA single-board computer used as a legacy industrial CPU board. It is associated with part number 20-005650-02 and is reported in industrial spare-parts records for MPM Accuflex equipment.
Is it a Trenton board or a Texas Micro board?
Treat this carefully. Market listings identify the part as Texas Micro, while other listings describe 92-005649 variants under Trenton or KLA-Tencor equipment channels. The board may have OEM, private-label, revision, or system-integration relationships that are not clear from public listings. Use the exact markings on the physical board—manufacturer label, full part number, revision, BIOS label, and machine BOM—as the purchasing authority.
Is 92-005649-00X interchangeable with 92-005649-0X or 92-005649-XXX?
Do not assume it is. The suffixes and revision markings can identify different production revisions, BIOS versions, assemblies, or customer configurations. Listings show examples such as 92-005649-0X Rev E-02 and 92-005649-XXX Rev F-02. Match the complete label, including revision, before ordering.
Can I install a standard ISA motherboard instead?
Not as a direct replacement. Even if another ISA board fits mechanically, it may have a different BIOS, CPU, chipset, memory mapping, storage controller, ISA slot geometry, I/O addresses, interrupts, operating-system support, or device-driver behavior. That can prevent the original machine software and ISA interface cards from working. A modern replacement requires an engineered migration plan and offline testing.
Can I hot-swap this single-board computer?
No. Shut down the machine in a controlled safe state, isolate power under lockout/tagout, verify stored energy is discharged where applicable, and use ESD controls before handling the board, RAM, drive cables, or ISA expansion cards. Hot removal can damage the ISA bus, corrupt storage, or interrupt machine control.
Will I lose machine software if I replace the CPU board?
Potentially. The application usually resides on the hard drive or other boot media, but board-specific BIOS settings, hardware drivers, I/O maps, license files, calibration data, and machine configurations may be required for correct operation. Clone the original drive, back up configuration files, photograph BIOS settings, and retain the original board until the replacement has passed a complete functional test.
Is the 92-005649-00X obsolete, and should I keep a spare?
Yes. It should be treated as obsolete legacy computer hardware. Supply is normally limited to New Surplus, used, refurbished, or repair-channel inventory, and revision matching can be difficult. For production-critical equipment, stock a verified spare board, a tested cloned drive, a compatible monitor/keyboard/service adapter, system recovery media, and a documented list of ISA cards and BIOS settings.
What testing should a supplier perform before shipment?
For New Original / New Surplus stock, request actual photos of both board sides, complete labels, revision codes, CPU/RAM/BIOS identifiers, ISA connectors, rear I/O, mounting points, and included cables or storage components. The supplier should inspect for corrosion, bent ISA contacts, battery leakage, damaged capacitors, rework marks, damaged traces, and fan condition where fitted.
For Refurbished stock, request testing in a compatible ISA industrial-PC chassis. The test report should document correct supply-rail operation, POST/BIOS startup, RAM test, video output, keyboard function, storage-interface detection, boot from a compatible test image, ISA slot communication with representative interface cards, RTC/CMOS retention check, thermal run, and final QC sign-off. Request test video, actual-unit photos, a written condition statement, warranty terms, and confirmation that no production software or confidential machine data is included.
