Hitachi IJ PH, Руководство по обслуживанию

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3-18
3.3 Engine part
- With regard to the electric parts/control board of the engine part, the functional
outline, the setting of the switch, the list of the check point/LED and the note at the
replacement are described.
3.3.1 EZJ93 board (MPU board)
[Function]
- Performs printing control, circulation system control and nozzle control (charge
voltage, excitation voltage, auto phase and so on).
- Stores the user data (printing data, substitution rules) and operation
management information.
[Check point]
Reference number Name Content
TP3 SGD Ground
TP6 PGD Ground
[Notes in case of the EZJ93 board replacement]
[ Replacement procedure of EZJ93 board ]
(1) Save the data on the back up memory card by using the copy data function.
(From the IJP to the memory card)
*) In the case where the EZJ93 board is replaced in a state allowing NO back up,
follow the “ Replacement procedure of EZJ93 board in a state allowing NO
back up” in the page 3-11.
(2) Turn off the power.
(3) Replace the EZJ93 board. (Do not replace the EZJ124 board simultaneously.)
(4) Before turning on the power, insert the system data memory card into the slot of
EZJ124 board.
(5) Turn on the power. (With the system data memory card inserted)
Setting of the switch is
not performed.
As for the copy data
function, see “2.9
Backup”.
- When replacing the EZJ93 board, the memory card where the IJP system
data is stored is necessary. (Hereinafter referred to as “system data memory
card”)
- Be sure to use the system memory card stored the latest version software.
- When replacing the EZJ93 board, be sure to perform the initialization of the
board according to the following procedure.
- Before replacing boards, be sure to turn off the power.
- After replacing boards, be sure to joint connectors to right places.
-
Save the data to back up memory card by using the following procedure before
replacing the EZJ93 board, and recover the data after the replacement.
*) Use different memory card for system data memory card and back up memory card.
- Do not replace the EZJ93 board and the EZJ124 board simultaneously.
Caution
!