Communication Related Service Call - Toshiba e-STUDIO2330C Service Manual

[C4B1] Fuser unit destination selection abnormality
(1) Check if the fuser unit is installed correctly or if its destination is correct.
(2) Check if any harness in the fuser unit is caught.
(3) Check if the destination of the SRAM is correct.
(4) Replace the LGC board if any harness of the LGC board is open or short circuited.
* The first occurrence of the error C4B1 is not the determination of the error.
When the error C4B1 occurred, turn the power of the equipment OFF and then back ON following
the instruction shown in the touch panel. If the abnormality is resolved, the value of the fuser unit
status counter is automatically reset to "0". When the error C4B1 occurred twice or more
consecutively, the error is determined and recorded in the error history.
[C4D0] Fuser belt thermopile abnormality
1. Check the thermopile
(1) Check if the connector of the thermopile is disconnected.
(2) Check if the harnesses of the fuser belt center thermopile and the fuser belt side thermopile are
open circuited.
(3) Replace the thermopile.
2. Check the LGC board
(1) Check if the connector CN333 is disconnected.
(2) Check if the conductor pattern on the LGC board is open circuited or short circuited.
(3) Replace the LGC board.
3. Cancel the service call
After repairing the matter which caused the error [C4D0], turn the power OFF and then back ON to
cancel the service call. However, the counter value will be stored until it is written over by the value of
the other service call.

26.3.15 Communication related service call

[C550] RADF I/F error
(1) Check if the harness connecting the RADF board and SLG board is disconnected or open
circuited.
(2) Check if the conductor pattern on the RADF board is short circuited or open circuited.
(3) Check if the conductor pattern on the SLG board is short circuited or open circuited.
(4) Replace the RADF board.
(5) Replace the SLG board.
[C570] Communication error between Engine-CPU and IPC board
(1) Check if the LGC board and IPC board are connected properly.
(2) Check if the conductor pattern on the IPC board is short circuited or open circuited.
(3) Check if the conductor pattern on the LGC board is short circuited or open circuited.
(4) Replace the IPC board.
(5) Replace the LGC board.
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
ERROR CODE AND TROUBLESHOOTING
© 2008, 2009 TOSHIBA TEC CORPORATION All rights reserved
26 - 62