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e-STUDIO350/352/353/450/452/453
TROUBLESHOOTING
5 - 69
5
5.1.10
Communication related service call
[C550 (C780)] RADF I/F error
(1) Check if the harness connecting the RADF board and SLG board is disconnected or open cir-
cuited.
(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 main 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.
[C580] Communication error between IPC board and finisher
(1) Check if the specified finisher is attached.
(2) Check if the harness connecting the IPC board and the finisher controller PC board is discon-
nected or open circuited.
(3) Check if the conductor pattern on the IPC board is short circuited or open circuited.
(4) Check if the conductor pattern on the finisher controller PC board is short circuited or open cir-
cuited.
(5) Replace the IPC board.
(6) Replace the finisher controller PC board.
[F070] Communication error between system CPU and main CPU
(1) Check if the harness connecting the SYS board (CN117) and LGC board (CN321) is discon-
nected or open circuited.
(2) Check the version of the system ROM on the SYS board.
(3) Check the version of the engine ROM version on the LGC board.
(4) Replace the SYS board.
(5) Replace the LGC board.
[F110] Communication error between system CPU and scanner CPU
[F111] Scanner response abnormality
(1) Check if the harness connecting the SYS board and SLG board is disconnected or open cir-
cuited.
(2) Check the version of the system ROM on the SYS board.
(3) Check the version of the scanner ROM version on the SLG board.
(4) Replace the SYS board.
(5) Replace the SLG board.