HP CM8060 Color MFP Kundendienst Handbuch Seite 208

When to run
Perform this adjustment when removing or replacing encoder driver motors, encoder strips, or
encoder PCAs.
Required time
5 minutes
Internal operation
Each carriage encoder board has three sensors: one encoder sensor and two index sensors. This
encoder strip adjustment uses the index sensors only. Both index sensors on A16 are referenced
as EN18 and both index sensors on A19 are referenced as EN19.
Examine the following sensors using CDFT to make adjustments:
◦ EN18 Carriage 1 Index 1 for the rear wall position of carriage 1
◦ EN18 Carriage 1 Index 2 for the front wall position of carriage 1
◦
EN19 Carriage 2 Index 1 for the rear wall position of carriage 2
◦
EN19 Carriage 2 Index 2 for the front wall position of carriage 2
Each of the two encoder strips have index sensor adjustment marks at each end of the strips. The
adjustment marks consist of three parts, one above the other: a thick black mark, a thin clear mark,
and another thick black mark. The procedure is meant to center the index sensors on the thin clear
marks. The sensors will display L when centered over a black encoder strip area and H when
centered over a clear encoder strip area. The adjustment procedure uses the clear area to
determine when the encoder strip is properly aligned.
Carriage 1 encoder strip adjustment instructions
1. Enter CDFT.
2. Enter the Carriage tool page.
3. Manually move carriage 1 to the front so that it is pressed against the front wall of the carriage
structure.
4. Examine sensor EN18 Carriage 1 Index 2. A displayed H means the front end of the carriage
1 encoder strip is in the correct position and no adjustments to the front end of the carriage 1
strip bracket is necessary.
If L is displayed, the bracket holding the front end of the carriage 1 encoder strip needs to be
adjusted to reposition the encoder strip. Remove the carriage cover plate to access the front
encoder strip mounting brackets. Loosen the two screws holding the carriage 1 encoder strip
bracket, and then raise or lower the bracket until H is displayed. Tighten the screws and
recheck that H is still displayed.
5. Manually move carriage 1 to the rear so that it is pressed against the rear wall of the carriage
structure.
6. Examine sensor EN18 Carriage 1 Index 1. A displayed H means the rear end of the carriage
1encoder strip is in the correct position and no adjustment to the rear end of the carriage 1
encoder strip bracket is necessary.
142 Kapitel 5 Calibrations and adjustments DEWW