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Service Guide OL400
Chapter 3 Maintenance & Disassembly
3.3.05 Setting the LED Head Drive Time
General Information
This adjustment is necessary only when replacing the LED head. However, if the luminous energy
ratings of the new and original LED heads are the same, adjustment is not necessary. The
luminous energy rating is on the label on the LED head. Digits three and two (reading from the
right) are the drive time rating.
The LED Head Drive Time is Parameter 13.
Procedure
To change the LED Head Drive Time, follow this procedure.
1. Power ON the printer while pressing Switch 1 on the Engine Control board. The LED will flash
continuously, indicating that the printer is in Parameter 1 of the maintenance mode.
2. Press Switch 1, twelve times to access Parameter 13. The LED will flash thirteen times,
indicating Parameter 13 has been selected.
3. Press Switch 1 once for five seconds. The contents of the Parameter 13 register will be
displayed.
4. To modify the contents of the Parameter 13 register, press Switch 1 (momentarily) to step
through the addresses (in accordance with the chart shown below).
5. To end the adjustment, press Switch 1 once for five seconds. The LED will flash thirteen times,
indicating Parameter 13.
LED Drive Time Rating / Drive Time Setting Table
Drive Time Rating displayed on
LED Head
Drive Time Setting Value
(Address)
08
5
09
4
10
3
11 12
2
13 14
1
