Media Sensor Fault - Datamax M-Class Mark II Maintenance Manual

3.2.1.2.1

Media Sensor Fault

Step
Examine the Media Sensor for obstructions.
1
Is the Media Sensor in good order?
Turn OFF and unplug the printer. Remove the
cover (see Section 4.1). Locate J7 on the Main
Logic PCB and inspect the connection at the
2 PCB and at the Media Sensor.
Are the connection and the assembly in good
order?
Plug in and turn ON the printer. Perform
calibration.
3
Was calibration successful?
Press FEED then listen for Drive Motor
operation.
4
Does the motor operate?
Turn OFF and unplug the printer. Remove the
cover. Inspect all drive train components.
5
Are the drive train components good working?
Troubleshooting
Procedure
3-6
Result Action
Yes Go to Step 2.
Clean the sensor; see
No
Section 2.1.2.
Yes Go to Step 3.
Connect cable or, if
No damaged, replace the
Media Sensor; see
Section 4.6.
Yes Go to Step 4.
1) Replace the Media
Sensor (see Section
4.6); or,
No
2) Replace the Main
Logic PCB (see
Section 4.4).
Yes Go to Step 5.
1) Replace the Power
Supply PCB (see
Section 4.5);
2) Replace the Main
No Logic PCB (see
Section 4.4); or,
3) Replace the Drive
Motor (see Section
4.7).
Inspect parts for
extreme wear or
misalignment including
the platen (see Section
Yes
4.8), printhead (see
Section 2.4), and
pressure (see Section
2.5).
Replace the defective
No
part(s).