F0: Controller System Lock Error; F1: Main Controller Rom Checksum Error; F2: Ram Read/Write Error; F3: Controller System Error - Mita DP-2800 Service Manual

5A2

F0: Controller system lock error

Meaning
Main controller can not
communicate with
control panel [shown
approx. 30 seconds
since OS fails to
continue operating.]

F1: Main controller ROM checksum error

Meaning
Checksum is failed
with the system ROM

F2: RAM read/write error

Meaning
Checksum is failed
with the RAM on the
main controller board.

F3: Controller system error

Meaning
Error other than F0,
F1, and F2. [privilege
violation, bus error,
etc.]
6-30
Suggested causes
Connection error between main
controller board and engine con-
troller board, engine board and
CON1 board, or CON1 board and
front panel board.
Suggested causes
—
Suggested causes
—
Suggested causes
—
Corrective action
Replace KP-536 (main
cont.). Check/replace
S02051. Replace KP-544
(engine). Replace KP-564
(CON1).
Corrective action
Replace KP-537
(cont. ROM).
Corrective action
Replace option SIMM's.
Replace KP-536.
Corrective action
Turn printer power off,
then on again. If not
solved, replace the main
controller board.