Oki Data CONFIDENTIAL
42930511TH Rev. 2 159 /
5.2.7 CU PCB of 1200 dpi Printer and Replacement of Mounted Components
Nonvolatile memory and a combination (at field)
Component
ASP PCB
HMK PCB
HDD
CF
EEPROM
KeyChip
Unrecoverable item
None
None
If the fonts are not backed
up, they cannot be restored.
•
The page count in the
EEPROM of the CU will be
lost and Color/Monochrome
Page will be returned to
zero. When the number of
printed sheets and other
information are necessary,
print out the engine
maintenance menu.
• The user-installed fonts
will be lost.
Adjustment
Mount the EEPROM, Key Chip,
HMK PCB, HDD used for the old
ASP PCB (EEPROM and Key Chip
are not mounted on a maintenance
ASP PCB).
After a new HMK PCB is mounted
on the ASP PCB, perform the
Factory Default (the MAC address
stored in the EEPROM of the HMK
PCB is copied to the HDD).
After a new HDD is mounted on the
ASP PCB, perform the Factory
Default (the EEOROM setting data
are copied to the HDD).
After a new CF is mounted on the
ASP PCB, perform the Factory
Default (the EEPROM setting data
are copied to the CF).
• Choose a maintenance EEPROM
for the model.
• After a maintenance EEPROM is
mounted on the ASP PCB,
perform the Factory Default (the
EEPROM data are copied to the
HDD).
After a new Key Chip is mounted on
the ASP PCB, perform the Factory
Default.
Recovery
None
As the MAC address is
changed, the password to
log in the web page has to
be changed.
• The user settings stored in
the HDD will be lost. Set
necessary parameters again.
•
If fixed IP is selected for the
network setting, it shall be
set again.
•
The clock shall be set again.
• User-installed fonts will be
lost. These can be restored
using the backup utility.
The similar recovery to that
for HDD is needed.
• The user settings stored in
the HDD will be lost. Set
necessary parameters again.
• If fixed IP is selected for
the network setting, it shall
be set again.
• The clock shall be set
again.
The user settings stored in
the HDD will be lost. Set
necessary parameters again.
* Factory Default Procedure
Operator panel operation: Hold down [MENU +] or [MENU -] key and choose "Administrator
menu." → "Do you want to continue setting?" appears. Choose "Yes." → "Offline ... Starting
setting ... Please wait" appears. → Press [MENU -] key and choose "Factory default." → Choose
"Yes." → Reboot.
5.2.8 Precautions in Key Chip Replacement (1200 dpi printer)
EFI's controller PCB for a 1200 dpi printer has an EEPROM called Key Chip. The Key Chip contains
EFI's management information. If the Key Chip is not mounted, the ASP PCB won't work.
If the error message "This is not an authorized program 001" as shown in "7.5.1 LCD Message List"
appears, replace the Key Chip with a new Key Chip. The removed Key Chip shall be returned to the
ODC. The Key Chip is very expensive, as the royalty fee is included. Take great care in handling
it.