Novexx Solutions ALX 92x, Service Manual

Page: 282 / 824

06/16 Rev. 09 SERVICE MANUAL Service Mechanics
DPM – PEM – ALX 92x
84
Printhead lift sensor

For details on testing the sensor: see topic
section
Service Electronics : ’Settings’,
’Sensor test’.
The light barrier [175A] is fastened to the
head lifting motor [175D] with a mount
[175B]. It is advisable to dismantle the
mount along with the light barrier.
Tools
•
Torx screwdriver size 20
•
2.5mm allen key
Dismantling
1. Undo the two fastening screws [175C] on
the inner side of the motor to which the
mount [175B] is attached.

Do not undo the two external screws! -
If the head lifting motor is detached the
printhead gap must be reset.
2. Unhook spring [175E].
3. Carefully take out the sensor mount [176].
4. Unplug the cable [176A] from the sensor
and unscrew the screw [176B]. Remove
the sensor.
Assembly
To assemble the device, follow the steps in
the reverse order. Make sure to do the
following:

Reattach the spring [175E] after as-
sembling the mount!

Underneath the motor the mount ser-
ves as a cable guide. Do not trap the cable!

The sensor [178A] must reach over the mo-
tor timing disc [178B]. The disc must not
drag on the sensor!
[175] Head lifting motor (D) with head lifting sensor (A).
[176] Mount for head lifting light barrier.
[177] A Sensor
B Timing disc
A
B
C
D
E
B
A
A
B