Cpu Error; Standard Ram Error - Epson EPL-N3000 Service Manual

EPSON EPL-N3000/AcuLaser M4000N

3.2.39 CPU Error

Table 3-42. Troubleshooting for "CPU Error"
Step Action and Question
Parts below can be the source of this error
• BOARD ASSY., MAIN
(p.299)
Main Board Assy.
1
1. Replace the BOARD ASSY., MAIN.
♦
Does the error still occur?
A CPU error can occur depending on the printing data structure
C H E C K
sent from the host/application to the printer. Therefore, perform
P O I N T
operation checks in different operation environments and with
different printing data.
Troubleshooting
Yes No
(Chapter 4 Disassembly and
Assembly)
Go to 3.4.17
Problem
Electrical
solved
Noise (p.127)
Troubleshooting When There is Error Display

3.2.40 Standard RAM Error

This error relates to the standard RAM memory mounted on the board assy.
Table 3-43. Troubleshooting for "Standard RAM Error"
Step Action and Question
Parts below can be the source of this error
• BOARD ASSY., MAIN
(p.299)
• Standard ROM-DIMM
Checking the Standard ROM-DIMM
1. Check to see if the mounted ROM-DIMM is exactly
1
as specified and connected properly. (Remove once
and then install again)
♦
Does the error still occur?
Replacing the Standard ROM-DIMM
2
1. Replace the Standard ROM-DIMM
♦
Does the error still occur?
BOARD ASSY., MAIN
3
1. Replace the BOARD ASSY., MAIN.
♦
Does the error still occur?
Note : The Main Board Assy and Memory Board Assy used with EPL-N3000 are as listed
below. The standard RAM is mounted on the Memory Board Assy.
For details, refer to "2.7 Operating Principles of Electric Circuitry
Parts Name
BOARD ASSY., MAIN
BOARD ASSY, MEMORY
Revision C
Yes No
(Chapter 4 Disassembly and
Assembly)
Problem
Go to Step 2
solved
Replace the
Go to Step 3 faulty ROM-
DIMM
Go to 3.4.17
Problem
Electrical
solved
Noise (p.127)
(p.61)".
Spec
C553MAIN
C533PROG
99
Confidential