No Power - Datamax I-Class Mark II Maintenance Manual

I-Class Mark II Maintenance Manual
3.2.2

No Power

Note: (1) Ensure the AC outlet is functioning properly, with the power cord securely connected to the

outlet and printer; and, (2) some printer circuits are protected by resettable fuses, when tripped
cycling power will reset those fuses.
1. Turn OFF the printer. Wait 30
seconds then turn the printer ON.
Did the printer power up?
2. Turn OFF and unplug the printer.
Check fuses F1 and F2 on the Power
Supply PCB. Is a fuse blown?
3. Disconnect the cables from J2 and J6
of the Power Supply PCB. Plug in and
turn ON the printer. Does the printer
power up?
4. Is the green LED located on the
Power Supply PCB) ON?
Defective AC Power Cord or
Power Supply PCB.
If the display remains dark, press and hold
the Menu key to adjust contrast; otherwise,
replace the Front Panel PCB; see Section 4.3.
Replace the fuse(s); see Section 4.10. If
the fuse(s) continue(s) to fail, replace the
Power Supply PCB; see Section 4.11.
Reconnect either cable. When power-up
ceases, replace the associated
component(s).
Possible loose Front Panel cable; or,
defective Front Panel PCB (see Section
4.3) or Main Logic PCB (see Section 4.9).
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Troubleshooting