EPSON EPL-N3000/AcuLaser M4000N
Revision C
Troubleshooting
Troubleshooting When There is Error Display
100
Confidential
3.2.41 RAM Error (Slot 0)
This error relates to expanded RAM.
3.2.42 ROM Checksum Error (Font)
This error is a standard font ROM fault.
Note :
The Main Board Assy and Memory Board Assy used with EPL-N3000 are as listed
below. The font ROM is mounted on the Memory Board Assy.
For details, refer to
“2.7 Operating Principles of Electric Circuitry
(p.61)”
.
Table 3-44. Troubleshooting for “RAM Error”
Step
Action and Question
Yes
No
Parts below can be the source of this error (
Chapter 4 Disassembly and Assembly
)
• BOARD ASSY., MAIN
(p.299)
• Expanded RAM DIMM
1
Expanded RAM-DIMM
1. Remove the expanded RAM DIMM and check the
operation.
♦
Does the error still occur?
Go to Step 2
Problem
solved
(Advise the
user to use the
recommended
RAM)
2
BOARD ASSY., MAIN
1. Replace the BOARD ASSY., MAIN.
♦
Does the error still occur?
Go to
3.4.17
Electrical
Noise
(p.127)
Problem
solved
C H E C K
P O I N T
Since the expanded RAM is mounted at the user level, make
certain before troubleshooting that it has been mounted
securely.
The expanded RAM must be EPSON's original SDRAM-
DIMM.
Table 3-45. Troubleshooting for “ROM Checksum Error (Font)”
Step
Action and Question
Yes
No
Parts below can be the source of this error (
Chapter 4 Disassembly and Assembly
)
• BOARD ASSY., MAIN
(p.299)
• Standard ROM-DIMM
1
Checking the standard ROM-DIMM
1. Check to see if the mounted ROM-DIMM is exactly
as specified and connected properly. (Remove once
and then install again)
♦
Does the error still occur?
Go to Step 2
Problem
solved
2
Replace the standard ROM-DIMM
1. Replace the standard ROM-DIMM.
♦
Does the error still occur?
Go to Step 3
Replace the
faulty ROM-
DIMM
3
BOARD ASSY., MAIN
1. Replace the BOARD ASSY., MAIN.
♦
Does the error still occur?
Go to
3.4.17
Electrical
Noise
(p.127)
Problem
solved
Parts Name
Spec
BOARD ASSY., MAIN
C553MAIN
BOARD ASSY, MEMORY
C533PROG
Содержание AcuLaser M4000N
Страница 1: ...EPSON EPL N3000 AcuLaserM4000N A4 Monochrome Laser Printer SERVICE MANUAL SEPG03004 Confidential ...
Страница 19: ...Confidential C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 33: ...Confidential C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 63: ...Confidential C H A P T E R 3 TROUBLESHOOTING ...
Страница 160: ...Confidential C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 396: ...Confidential C H A P T E R 5 ADJUSTMENT ...
Страница 404: ...Confidential C H A P T E R 6 MAINTENANCE ...
Страница 408: ...Confidential C H A P T E R 7 APPENDIX ...