Nvm Initialization - Oki C7400 Maintenance Manual

3.1.2.6 NVM initialization

The self-diagnosis is used to initialize non-volatile memory.
1. Enter the self-diagnosis (Level 1) mode, and continue to press the 1 1 1 1 1 and 5 5 5 5 5 keys until "NV-RAM
INITIAL" appears on the upper display (the 1 1 1 1 1 key is for test item increment and the 5 5 5 5 5 key for
test item decrement).
2. The table No. to be initialized appears. There are two tables to be initialized.
Hold the 2 2 2 2 2 and 6 6 6 6 6 keys down until a target table No. shows up (the 2 2 2 2 2 key is for table No.
increment and the 6 6 6 6 6 key for table No. decrement).
NV-RAM INITIAL
TABLE 1
3. The upper "NV-RAM INITIAL" starts blinking upon pressing the 3 3 3 3 3 key, and all the items in Table
3-3 are initialized by holding the key down for 10 seconds.
4. Press the 4 4 4 4 4 key to end the test (the display of step 1 is restored).
Initialization Item
Drum Counter Black
Yellow
Magenta
Cyan
Belt Unit Counter
Fuser Unit Counter
Toner Counter Black
Yellow
Magenta
Cyan
Initialization Item
Registration Yellow LED
Set.Point Magenta LED
x-axis Cyan LED
Registration Yellow LED
Set.Point Magenta LED
y-axis(Left) Cyan LED
Registration Yellow LED
Set.Point Magenta LED
y-axis(Right) Cyan LED
Engine Parameter
41316401TH Rev.9
Table 3-3 (1/2) Initialization Items in Table 1
Detail
Initializes the internal counter after the replacement of
each drum.
Initializes the internal counter after the replacement of
the belt unit.
Initializes the internal counter after the replacement of
the fuser unit.
Initializes the internal counter after the recovery from
each toner low error.
Table 3-3 (2/2) Initialization Items in Table 2
Initializes the X-axis correction value for the
LED head (Yellow/Magenta/Cyan).
Initializes the Y-axis left-correction value for
the LED head (Yellow/Magenta/Cyan).
Initializes the Y-axis right-correction value for
the LED head (Yellow/Magenta/Cyan).
Initializes all the items that have been set
using levels 2 and 3.
Initial Value
Detail Initial Value
Oki Data CONFIDENTIAL
Unit
0 —
0 —
0 —
0 —
Unit
0 1/1200 inch
0 1/1200 inch
0 1/1200 inch
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