E8: Fuser Unit Life Fuse Error; E9: Toner Motor Error - Mita DP-2800 Service Manual

E8: Fuser unit life fuse error

Meaning
The fuser unit life fuse
won't blow out.

E9: Toner motor error

Meaning
The toner motor does
not revolve, or the
current protection
circuit is activated.
* Also, try rotating the toner kit gear (feed gear). Compare the torque with a new toner kit.
Replace the toner kit if the torque is abnormal. Replace developer unit if the toner kit is
normal.
E9
Turn printer off, then on.
Damaged
toner container
gears?
Replace toner container.
Suggested causes
• Defective gate array U6
• Defective fuse cut circuit on the
engine board
Suggested causes
• Overcurrent in the toner motor
circuitry due to an excessive torque
• Toner motor locked
• Defective gate array U2
• Defective toner motor driver
transistor or overcurrent detector
No
Yes
Replace KP-544. If not recovered,
replace KP-599, KP-560, S02076
cable between KP-599 and KP-560 or
S02052 cable between KP-544 and
KP-599, in the order of priority.
Replace developer.
Turn printer off, then on.
E9 shown?
Yes
Corrective action
Turn printer power off and
off several times. Re-
place fuser unit. Replace
KP-544.
Corrective action
Replace toner container.
Replace developer unit.
Replace KP-544. Re-
place KP-599. Check/
replace S02052 and
S02076.
No
End
5A2
*
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