Rev. I
Troubleshooting
8-19
MR Series Technical Reference Manual
MSR Faults
Unable to Read Cards
❏
Follow the procedures below.
1. Check whether an incompatible card type (track type) is used.
2. Check the reading face of the card.
Note:
Confirm whether the problem is resolved by removing the external connectors. The MSR and
keyboard can not be used at the same time.
3. Confirm whether moving the display away from such noise sources as CRT displays and
power supplies solves the problem.
4. Confirm the cable (Reference No. 119) connection at the divided side.
5. Confirm that the correct settings have been entered in the MSR setup utility. (Refer to
Chapter 4.)
6. Check the cable (Reference No. 119) connection at the side that is connected to the DM-
M820.
7. Confirm whether replacing the MSR assembly solves the problem.
8. Confirm whether replacing the main circuit board solves the problem.
Summary of Contents for DM-M820
Page 1: ...Technical Reference Manual MR Series English 403308709 Rev I EPSON ...
Page 2: ......
Page 20: ...xviii Rev I ...
Page 42: ...2 8 Setup for the IM 800 and the DM M820 Rev I ...
Page 50: ...3 8 Hardware Specifications Rev I ...
Page 178: ...5 38 BIOS Functions Rev I ...
Page 216: ...8 26 Troubleshooting Rev I ...
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Page 324: ...SEIKO EPSON CORPORATION EPSON ...