Read Sharp MX-1800N (serv.man16) Service Manual online
MX-1800N SELF DIAG AND TROUBLE CODE 8 – 9
E7-00
System memory access error
* When E7-00 is in the following combination where system mem-
ory Slot 2 (inside) and Slot 1 (outside) operate normally but a
hard error occurs. (Combination of system memory (slot 1, slot 2)
hard error occurs. (Combination of system memory (slot 1, slot 2)
E7-01
System data trouble
E7-03
HDD trouble
E7-05
Local memory access error
* Combination where local memory Slot 4 (inside) and Slot 3 (out-
side) operate normally (Refer to E7-09) but a hard error occurs.
E7-06
Decode error trouble: Compression
decode error (A compression file can-
not decompressed.)
decode error (A compression file can-
not decompressed.)
E7-08
Local memory specifications error
* The error occurs when a DIMM which is not recommended by
Sharp.
Trouble content
System memory trouble (Tandem memory cannot
be guaranteed.)
Access to system memory cannot be made.
be guaranteed.)
Access to system memory cannot be made.
Section
MFP
Case 1
Cause
Expansion memory instillation error
Check and
remedy
remedy
Check installation of the system expansion
memory.
memory.
Case 2
Cause
Garbled data
Check and
remedy
remedy
1)
Use SIM60-01 to check memory read/write
2)
Replace the expansion memory (if installed.)
3)
Replace the MFPcnt PWB.
Case 3
Cause
Dirt on the memory pin
Check and
remedy
remedy
Clean the memory pin with alcohol.
No.
System memory
Operation guarantee
When turning
on the power
Slot2
(Inside)
Slot1
(Outside)
Hard
Soft
1
–
–
Since the
machine is not
booted, the
trouble display is
not made.
machine is not
booted, the
trouble display is
not made.
2
256MB
–
{
{
Normal operation
3
512MB
–
{
{
Normal operation
4
256MB
256MB
{
{
Normal operation
5
512MB
256MB
{
{
Normal operation
6
256MB
512MB
{
{
Normal operation
7
512MB
512MB
{
{
Normal operation
8
–
256MB
{
{
Normal operation
9
–
512MB
{
{
Normal operation
Trouble content
ICU data trouble occurs.
Section
MFP
Case 1
Cause
ICU image transfer trouble
Check and
remedy
remedy
1)
Check the connection state of the MFPcnt
PWB connector.
PWB connector.
2)
Replace the MFPcnt PWB.
Trouble content
HDD connection trouble
File control area data trouble (when FAT is broken)
File control area data trouble (when FAT is broken)
Section
MFP
Case 1
Cause
The HDD is not properly installed to the MFPcnt
PWB
PWB
Check and
remedy
remedy
1)
Check installation of the HDD of the MFPcnt
PWB.
PWB.
2)
Check connection of the harness of the
MFPcnt PWB.
MFPcnt PWB.
3)
Use SIM62-2 and -3 to check read/write from/
to the HDD.
to the HDD.
Case 2
Cause
The HDD does not work properly.
Check and
remedy
remedy
Replace the HDD.
Case 3
Cause
MFPcnt PWB trouble
Check and
remedy
remedy
Replace the MFPcnt PWB.
Trouble content
Local memory cannot be accessed.
Section
MFP
Case 1
Cause
Local memory installation abnormality
Check and
remedy
remedy
Check the installing state of the local memory.
Case 2
Cause
Dirt on local memory pin
Check and
remedy
remedy
Clean the local memory pin with alcohol.
Case 3
Cause
Garbled data
Check and
remedy
remedy
1)
Use SIM60-01 to check memory read/write.
2)
Replace the memory.
3)
Replace the MFPcnt PWB.
Trouble content
A decode error occurs when forming an image.
Section
MFP
Case 1
Cause
Compression data abnormality
Check and
remedy
remedy
1)
Check the installing state of the PWB. (PCI
bus)
bus)
2)
When an error occurs during a FAX job,
check the installation of the FAX PWB. In the
other cases, check the installation of the
MFPcnt PWB and HDD.
check the installation of the FAX PWB. In the
other cases, check the installation of the
MFPcnt PWB and HDD.
3)
Replace the MFPcnt PWB.
Case 2
Cause
HDD connection abnormality
Check and
remedy
remedy
Check the HDD connection.
Case 3
Cause
Data are garbled in image compression/send.
Check and
remedy
remedy
1)
Check the installation of the PWB. (PCI bus)
2)
When an error occurs during a FAX job,
check the installation of the FAX PWB. In the
other cases, check the installation of the
MFPcnt PWB and HDD.
check the installation of the FAX PWB. In the
other cases, check the installation of the
MFPcnt PWB and HDD.
3)
Replace the MFPcnt PWB.
Case 4
Cause
MFPcnt PWB abnormality
Check and
remedy
remedy
Replace the MFPcnt PWB.
Case 5
Cause
Local memory access trouble
Check and
remedy
remedy
Check and execute remedy similarly to E7-05.
Trouble content
DIMM of different specification is detected in the
local memory slot.
local memory slot.
Section
MFP
Case 1
Cause
DIMM of different specification is installed to the
local memory slot.
local memory slot.
Check and
remedy
remedy
Check the installed DIMM.
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