e-STUDIO5520C/6520C/6530C © 2008-2011 TOSHIBA TEC CORPORATION All rights reserved
ERROR CODE and TROUBLESHOOTING
6 - 120
[C024] Developer unit mixer motor-K locking error
(1) Pull out the EPU tray and perform the output check (03-114) to check if the 3 outputs of the K-
developer unit mixer are rotating normally.
When it is not rotating
(2) Is the connector of the K-developer unit mixer motor connected securely?
(3) Check if the connector of the K-developer mixer motor is disconnected or the harnesses are
open circuited.
(4) Check if the K-developer unit mixer motor is abnormal.
(5) Check if the drive gear array has any abnormality such as breakage.
When it is rotating
(6) Check if the developer material is excessively supplied to the K-developer unit.
(7) Check if the drive gear array of the K-developer unit has any abnormality such as breakage.
[C360] Needle electrode cleaner operation abnormality
(1) Check if there is any abnormality on the connector between the equipment and the EPU tray of
the process unit. (05-2788)
(2) Perform the code 08-4606- 0 to -3 (-0: K, -1: Y, -2: M, -3: C) to check which station the error is
found.
(3) Check if the needle electrode cleaner detection sensors (S30 - S33) are coming off of the plate of
the EPU tray.
(4) Are the needle electrode cleaner detection sensors (S30 - S33) working normally?
(Input check: K: 03-[Fax ON]/[0]/[E], C: 03-[Fax ON]/[0]/[H], M: 03-[Fax ON]/[9]/[C], Y: 03-[Fax
ON]/[9]/[F])
* If it is working properly, proceed to 11. If not, check 5 to 10 below.
(5) Check if connectors of needle electrode cleaner detection sensors (S30 - S33) disconnected.
(6) Check if the connectors for the needle electrode cleaner detection sensors (S30 - S33) on the
EPU board (CN553 to CN556) are disconnected.
(7) Check if the connector pins are disconnected or the harnesses are open circuited.
(8) Check if the conductor pattern on the EPU board is open circuited or short circuited.
(9) Replace the needle electrode cleaner detection sensors (S30 - S33).
(10) Replace the EPU board
(11) Is the needle electrode cleaner drive motors (M23 - M26) working normally?
(Input check: K: 03-207, C: 03-206, M: 03-205, Y: 03-204)
* If it is working properly, proceed to 22. If not, check 12 to 21 below.
(12) Check if the needle electrode cleaner drive section rotates smoothly, and if it does not, clean or
replace it.
(13) Check if the connectors of the needle electrode cleaner drive motors (M23 - M26) and relay
harnesses are disconnected.
(14) Check if the relay harness and the harness relay connector on the EPU board side are
disconnected
(15) Check if the connectors on the EPU board (CN553 - CN556) are disconnected.
(16) Check if the connector pins are disconnected or the harnesses are open circuited.
(17) Check if the conductor pattern on the EPU board is open circuited or short circuited.
(18) Replace the Replace the needle electrode cleaner drive motors (M23 - M26).
(19) Replace the EPU board
(20) Check if the harness between the EPU board (CN550) and the LGC board (CN310) is open
circuited.
(21) Replace the LGC board.
(22) Correct the needle electrode cleaner drive section (timing belt or gears).
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