Brand: Mitsubishi
Category: Computer
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for CX SERIES
Uploaded: Nov. 21, 2025, 6:59 p.m.
Manual Publish Date: 1998-01-01
Warranty Information
Any existing maintenance or warranty agreement may not be supportable in another country.
Turning on the PC: Press the POWER button. The Power Mode indicator lights up [green].
Power Management: The Power Mode indicator shows the computer's state: [unlit] Off, [amber] Power Minimised, [green] Power Controlled. The computer can wake from Power Minimised or Off states with an incoming call (modem) or remote control (network card).
Connecting Components: Ensure power is off. Connect signal cables (keyboard, mouse, monitor, etc.) to the system unit. Connect power cords to AC outlets. Turn on the system unit first, then the monitor, then other peripherals.
Troubleshooting and error codes
| Error Message | Explanation |
| Diskette drive A error | Drive A is present but fails the POST diskette tests. Check drive definition in Setup and installation. |
| Extended RAM Failed at offset: nnnn* | Extended memory not working or not configured properly at offset nnnn*. |
| Failing Bits: nnnn* | nnnn* is a map of the bits at the RAM address that failed the memory test. |
| Fixed Disk 0 Failure or Fixed Disk 1 Failure or Fixed Disk Controller Failure | Fixed disk is not working or not configured properly. Check installation and Run Setup. |
| Incorrect Drive A type - run SETUP | Type of diskette drive for drive A not correctly identified in Setup. |
| Invalid NVRAM media type | Problem with NVRAM (CMOS) access. |
| Keyboard controller error | The keyboard controller failed test. Try replacing the keyboard. |
| Keyboard error | Keyboard not working. |
| Keyboard error nn | BIOS discovered a stuck key and displayed the scan code nn for the stuck key. |
| Keyboard locked - Unlock key switch | Unlock the system to proceed. |
| Monitor type does not match CMOS - Run SETUP | Monitor type not correctly identified in Setup. |
| Operating system not found | Operating system cannot be located on drive A or C. Enter Setup and check if fixed disk and drive A are properly identified. |
| Parity Check 1 | Parity error found in the system bus. BIOS attempts to locate the address and display it on the screen. |
| Parity Check 2 | Parity error found in the I/O bus. BIOS attempts to locate the address and display it on the screen. |
| Press <F1> to resume, <F2> to Setup | Displayed after any recoverable error message. Press <F1> to start boot process or <F2> to enter Setup. |
| Real time clock error | Real-time clock fails BIOS test. May require motherboard repair. |
| Shadow RAM Failed at offset: nnnn* | Shadow RAM failed at offset nnnn* of the 64 KB block at which the error was detected. |
| System battery is dead - Replace and run SETUP | The CMOS clock battery indicator shows the battery is dead. Replace the battery and run Setup. |
| System cache error - Cache disabled | RAM cache failed the BIOS test. BIOS disabled the cache. |
| System CMOS checksum bad - run SETUP | System CMOS RAM has been corrupted or modified incorrectly. Run Setup and reconfigure the system. |
| System RAM Failed at offset: nnnn* | System RAM failed at offset nnnn* of the 64 KB block at which the error was detected. |
| System timer error | The timer test failed. Requires repair of system motherboard. |