Hitachi UX Twin Nozzle Service Manual page 318

6.4.14 Product Speed Matching Error
The frequency of the encoder signal is exceeding the
printing capability of the IJ printer.
Lower the frequency of the encoder signal, or increase its
dividing ratio. Note that the printed character width will
change if the Pulse rate div. Factor is changed.
See Technical Manual 4.3.3-3, "Method of calculating the
conditions which allow product speed matching".
6.4.15 Cooling fan warning
Cooling Fan Warning
Warning
Remove the EZJ133 board CN13
connector, EZJ138 board CN1 and
CN4 connector, intake fan harness
once, and reconnect it.
Does the fault recur?
Does the electric wire of
Sensor Harness UX have
disconnection or damage?
Replace inhalation fan unit.
Does the fault recur?
Replace the EZJ133 board.*1.
Product Speed
Matching Error
Resume the
operation.
(*1): When you replace EZJ133 board, refer to [Replacement
[Caution]
Be sure to check that there is no wrong connection of harnesses
by referring to [Connector numbers and Identifying method of
harnesses] in "3.3.20 Electrical Connection Diagram".
No
Yes
Yes
Replace Sensor Harness UX
No
Yes
No
Yes
6-76
procedures of EZJ133 board] in "3.3.1 EZJ133 board
(MPU board)".
Does the fault recur?
Resume the operation
No