Dover Markem-Imaje 5200, Service Manual

Page: 98 / 200

SECTION 5 Troubleshooting
5–8
0855855eng 6/08
Symptom Possible Cause / Problem Reference / Action
Ink Delivery Module
(IDM) (continued)
Holding chamber Check that the filter screws
are tightly secured to the
holding chamber.
Check for broken filter O-ring.
Replace if necessary.
Check for broken pump piston
O-ring. Replace if necessary.
Ink line connection Tight or broken ink adapter
fitting IN, 2, Connecting the Ink Line
Inside the Enclosure
Ink Delivery Module
(IDM) Will Not Heat Open hold or melt over-
temperature thermostat
(device opens at 149°C). Push appropriate thermostat
button to reset.
Failed hold or melt thermistor
(device should read
approximately 100k ohms at
25°C) SE 4, Ink Delivery Module;
Melt Thermistor
SE 4, Ink Delivery Module;
Hold Thermistor
Failed hold heater (device
should read 36 ohms) SE 4, Ink Delivery Module;
Hold Heater
Failed melt heater (device
should read 72 ohms) SE 4, Ink Delivery Module;
Melt Heater
Electrical connection 5200/5400 Block Diagram
Failed I/O Panel assembly
(backplane) SE, 6, Replacing the I/O Panel
Assembly
Incorrect line voltage IN, 2, Electrical
IN, 2, Changing the Voltage
Configuration
Cannot Read Display
Heartbeat LED on
Control Board blinks
Incorrect contrast setting OP, 5, Unreadable Display
Hold down STOP key and
press Up-Arrow to lighten or
Down-Arrow to darken
display.
SE, 4, User Interface;
Contrast
Electrical connection 5200/5400 Block Diagram
Verify electrical connections
inside User Interface
enclosure and test for 14VDC
at UI Interconnect Board.