6-24
FS-1800/1800N | FS-3800/3800N
(22) F2 Main or expanded memory error
(23) F3 General failure
Meaning Suggested causes Corrective action
Checksum failed with
main memory (RAM)
on the main board or
expanded memory
(DIMM).
*1
: FS-1800/1800N
*2
: FS-3800/3800N
• Defective system main memory (RAM) on
the main board (KP-777
*1
/KP-858
*2
).
• Defective main board (KP-777
*1
/KP-858
*2
).
• Defective expanding memory (DIMM) on the
main board (KP-777
*1
/KP-858
*2
).
Replace main board (KP-
777
*1
/KP-858
*2
).
Replace expanding
memory (DIMM).
Meaning Suggested causes Corrective action
Miscellaneous failure
with the main board,
other than F0, F1 and
F2, above.
*1
: FS-1800/1800N
*2
: FS-3800/3800N
• Defective main board (KP-777
*1
/KP-858
*2
).
Replace main board (KP-
777
*1
/KP-858
*2
).
(24) 99 Toner refreshing mode error
Meaning Suggested causes Corrective action
Toner refreshing mode
error.
• Defective high voltage unit.
Replace high voltage unit.
See page 5-25.
Refer to section Toner
refreshing mode on page 3-
22.