Problem Resolution; Troubleshooting - Datamax E-Class Mark II Maintenance Manual

3.0 Overview
This section covers techniques for isolating and correcting printer problems. Use the following
procedures to isolate and correct malfunctions. When problems are isolated to a Printed Circuit PCB
(PCB), assembly replacement is suggested.
Note: Unless otherwise noted, see the Operator's Manual for configuration, interfacing and
setup information.
3.1 Initial Troubleshooting Steps
(1) Before servicing always unplug the printer; (2) ensure that the unit has been placed
on a level, stable surface; and, (3) use extreme care if measuring voltages.
CAUTION
Before troubleshooting, perform the following actions:
Remove any dirt or dust from the printer (see Section 2);
•
Confirm that AC outlet voltage is within the specification;
•
Confirm that the printer is placed within an acceptable environmental; and,
•
Confirm that media has been correctly loaded.
•

3.2 Problem Resolution

In the table below, locate a description of the symptom in the Problem column to find the associated
Possible Causes and solutions, which are arranged by probability.
Problem
Power LED is not ON
(continued)

Troubleshooting

Troubleshooting
The power switch is not ON.
•
The power supply is not properly connected to printer or the AC outlet.
•
The Power Supply or the power cord is defective; replace.
•
The Control Panel PCB is defective; see Section 4.7.
•
The Main PCB is defective; see Section 4.3.
•
Possible Causes
3-1