Troubleshooting
3-13
Warning Messages (continued)
Displayed Message
Description
Possible Solution(s)
LOW VOLTAGE
+24 VDC has dipped
below threshold.
Possible low or fluctuating AC line
voltage; try moving the printer to
another circuit. Other causes can
include a faulty Power Supply PCB,
Main Logic PCB, or printhead.
RTC RAM FAILURE
Permanent memory
save function failed.
If the condition persists, possible
faulty Main Logic PCB (see Section
4.4).
TEMPERATURE PAUSE
High printhead
temperature has been
detected.
Wait. Allow the printhead to cool
before resuming operation. If the
condition persists, verify that
environmental conditions are within
specification for the printer.
3.3.2 Fault Messages
Fault Messages receive the highest display priority and, if multiples occur, messages will
cycle.
Note: To return operation after a fault, correct the condition and then press FEED.
Fault Messages
Displayed Message
Description
Possible Solution(s)
24 V OUT OF TOL24 VDC supply is not
within operating range.
Cycle power OFF and ON. If the
fault does not clear, adjust the +24
VDC supply voltage or replace the
Power Supply PCB; see Section 4.5.
WARNING! Use extreme
caution when measuring voltages.
ADC FAULT
An analog to digital
conversion has failed.
Cycle power OFF and ON. If the
fault does not clear, replace the
Main Logic PCB; see Section 4.4.
Summary of Contents for M-Class Mark II
Page 1: ...M Class Mark II Maintenance Manual...
Page 4: ...ii...
Page 5: ...i 1 Overview 1 0 Introduction 1 1 1 About this Printer 2...
Page 6: ...ii...
Page 42: ...ii...
Page 62: ...Troubleshooting 3 20...
Page 64: ...ii 4 11 Media Supply Assembly 28 4 11 1 Media Hanger 28 4 11 2 Media Hub 29...
Page 94: ...Removal and Replacement 4 30...