Memory Faults - Epson MR Series Technical Reference Manual

Time Setting is Not Possible or Time Setting Disappears
❏ Follow the procedures below.
1. Confirm whether replacing the lithium battery on the main circuit board solves the
problem.
2. Confirm whether replacing the main circuit board solves the problem.
"CMOS Checksum Error" occurs frequently during the POST
❏ When the lithium battery is depleted, this error occurs. If the battery is not changed, CMOS
RAM may be cleared or the RTC is cleared every time the power of IM-800 is turned off.
Replace the battery with the commercially sold lithium battery type CR2032.

Memory Faults

Memory Count Displayed by POST Differs from Actual Memory Size
❏ Follow the procedures below.
1. Replace the DIMM(s).
2. Confirm whether replacing the DIMM(s) solves the problem.
• Note that EPSON guarantees only DIMM products that EPSON recommends.
3. Confirm whether replacing main circuit board solves the problem.
Memory Error
❏ Follow the procedures below.
1. Check DIMM installation.
2. Replace the DIMM(s).
3. Confirm whether replacing the DIMM(s) solves the problem.
• Note that EPSON guarantees only DIMM products that EPSON recommends.
4. Check CPU installation.
5. Confirm whether replacing the CPU solves the problem.
6. Confirm whether replacing the main circuit board solves the problem.
Rev. I
MR Series Technical Reference Manual
Troubleshooting 8-7