Datamax M-Class Mark II Maintenance Manual page 46

Step
Turn OFF and unplug the printer. Disconnect
the cable from J2 on the Power Supply PCB,
6 and then plug in and turn ON the printer.
Is the STOP, ERROR, or READY Light ON?
Turn OFF and unplug the printer. Disconnect
the cable from J6 on the Power Supply PCB,
7 and then plug in and turn ON the printer.
Is the STOP, ERROR, or READY Light ON?
Turn OFF and unplug the printer. Disconnect
the cable from J7 on the Main Logic PCB, and
8 then plug in and turn ON the printer.
Is the STOP, ERROR, or READY Light ON?
Turn OFF and unplug the printer. Disconnect
J5 from the Main Logic PCB. Plug in and turn
ON the printer. Using a multi-meter, check the
following voltages at the connector:
9
+5 VDC @ Pin 1;
•
+3 VDC @ Pin 2; and,
•
+ 20 VDC @ Pin 4.
•
Are the voltages present?
Troubleshooting
Procedure
3-4
Result Action
Replace the printhead
Yes (see Section 4.3) or, if
defective, the cable.
No Go to Step 7.
Replace the Drive
Yes
Motor; see Section 4.7.
No Go to step 8.
Replace the Media
Yes Sensor; see Section
4.6.
No Go to step 9.
Replace the Main Logic
Yes
PCB; see Section 4.4.
Replace the Power
No Supply PCB; see
Section 4.5.