Oki MC760 Maintenance Manual page 132

5.2.1.12 LED head serial number display
This self-diagnostic menu item is used to check whether the downloaded LED head data
matches the serial number of the actual LED head.
1. Enter the self-diagnostic mode (level 1) and press the [2], [8] key until "LED
HEAD DATA" is displayed in the upper row of the display area. (Pressing the [2]
key increments the test item and pressing the [8] key decrements the test item.)
Press the [6] key when "LED HEAD DATA" is displayed in the display area.
2. When the [2] key or the [8] key is pressed, serial numbers of the K/Y/M/C LED
head data are displayed in order.
3. Pressing the [4] key terminates the test. (Returns to the status of step 1.)
K ** ** ** ****
xxxxxxxxxxxxx
** ** ** ****: Rev number
xxxxxxxxxxxxxxxx: serial number
5.2.1.13 NVRAM parameter setting
Do not use this menu item.
5. Maintenance Menu
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