42049001TH Rev.1 60 /
Oki Data CONFIDENTIAL
3.2 Adjustments after Parts Replacement
Adjustments required after parts replacement are described below. The adjustment and correction
of color registration must be performed without exception.
Note:
When a PU (RSN board) is replaced with a new one, data may not be read out of its
EEPROM. In such cases, color balance must be adjusted.
3.2.1 Notes on Engine Controller Board Replacement
When replacing engine controller boards (RSN PWBs), extract EEPROM data from the boards and
copy it onto new boards.
When the operator panel message SERVICE CALL 105 (an engine EEPROM error) appears,
engine controller board replacement with a new one is required.
When replacing engine controller boards (RSN PWBs), version read (fuse cut-out) function is
disabled. Mode switching by a PJL command from Factory to Shipping must be performed:
1. Enter System Maintenance mode by turning on printer power while holding the MENU+ and
MENU- keys down concurrently.
2. User MENU+ key keystrokes until “DIAGNOSTIC MODE” is displayed (a few keystrokes), and
press the ENTER key.
3. Press the MENU+ or MENU- key until “FACTORY MODE” is shown, and press the ENTER
key.
4. While “FACTORY MODE” is being displayed, select a value by the MENU+ or MENU- key and
press the ENTER key.
5. Selecting “SHIPPING MODE” (enables fuse cut-out) and, until the display stops blinking,
concurrently pressing and holding the ONLINE and CANCEL keys store the value.
Notes!
The life data of the parts, such as the belt, toner and image drum units, of a printer is
cleared by its EEPROM replacement. Note that an error is introduced in each unit’s life
count until the unit is next replaced. The following are counts cleared by EEPROM
replacement. Errors in counts other than the count of total sheets fed, which counts are
cleared at the points where the units corresponding to the counts are replaced with new
ones, are resolved at those points.
Replaced Part Adjustment
LED Head Not required.
Image Drum Cartridge Not required.
(Any of Y, M, C and K)
Fuser Unit Not required.
Belt Unit Not required.
PU (RSN Board) Copying of EEPROM data *Note
CU (ARC Board / OWL Board) Copying of EEPROM data *Note
Shutter Setting of correction value for density detection calibration chip
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