Hitachi UX Twin Nozzle Service Manual page 298

6.3.13 Internal Communication Error C / T / M
Internal Communication
Error C/M
Was software downloaded just
before this error occurred?
Is the EZJ133 board CN1
connector disconnected or
in poor contact?
Is the EZJ128 board CN1
connector disconnected or
in poor contact?
Is SOP05 used for
calling up print data?
The strobe input timing is
following the regulation?
Input the strobe signal with correct
timing of the SOP05 specification.
(*1): When you replace EZJ 128
board, refer to [Replacement
procedures of EZJ128 board]
in "3.2.1 EZJ128 board
(controller board)".
(*2): When you replace EZJ133
board, refer to [Replacement
procedures of EZJ133 board]
in "3.3.1 EZJ133
(MPU board)".
[Caution]
Be sure to check that there is no
wrong connection of harnesses by
referring to [Connector numbers
and Identifying method
harnesses] in "3.3.20 Electrical
Connection Diagram".
No
No
No
No
Yes
Yes
No
Yes
Does the fault recur?
No
Reset the system by rescue software.
board
of
Check IJ printer's model, then
Yes
download the software again, which
corresponds to the IJ printer model.
Yes
Yes
Does the fault recur?
Yes
Replace the EZJ128 board.*1
Does the fault recur?
Yes
Replace the EZJ133 board *2.
Resume the
operation.
6-56
Does the fault recur?
Disconnect the connector once.
And then reconnect it correctly.
No
Does the fault recur?
Yes
No
No
No
Yes