Table of Contents
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Troubleshooting Procedures
Troubleshooting Procedure 1. – NO POWER Light When Printer is Turned On
Step
Check Item
1.
Is power cord properly attached to the printer and to the AC
receptacle?
2.
Press the FEED button. Does any mechanical movement
occur?
3.
Unplug printer. Remove the voltage selection switch/fuse hold-
er (see page 2–3). Check fuse. Is the voltage selection correct
and the fuse good?
4.
Remove cover (see page 7–3). Locate the in-line fuse behind
the Printer Controller PCBA (see Figure 7–9). Is the fuse
good?
5.
Remove all accessories connected to the printer (e.g., memory
cartridge, cutter, etc.). Plug the printer in and turn it ON. Is the
POWER light illuminated?
6.
Unplug printer. Check the ribbon cables from Connector J2 on
the Printer Controller to Connector J1 on the Front Panel
PCBA. Is the cable properly connected and undamaged?
7.
Unplug printer. Unplug printhead cable from J6 on the Printer
Controller PCBA. Plug in the printer and turn it ON. Is the
POWER light illuminated?
8.
Unplug printer. Unplug motor assembly cable from J6 on the
Power Supply PCBA. Plug in the printer and turn it ON. Is the
POWER light come illuminated?
9.
Unplug printer. Unplug the cable from J5 on the Power Supply
PCBA.
WARNING: This procedure requires measurement of
voltage. Do not cross test leads or allow
leads to touch other objects.
Plug in the printer and turn it ON. Check for approximately 8
VAC between pins 1 and 2 and approximately 10 VAC be-
tween pins 4 and 5 on the J5 connector. Are the approximate
voltages present?
6–6
Result
Corrective Action
YES
Go to Step 2.
NO
Connect AC cord
properly.
YES
Go to Step 5.
NO
Go to Step 3.
YES
Go to Step 4.
NO
Replace fuse and/or
configure for the correct
voltage setting.
YES
Go to Step 5.
NO
Replace fuse.
YES
Eliminate defective accessory
and replace.
NO
Go to Step 6.
YES
Go to Step 7.
NO
Properly connect cable and/
or replace if necessary.
YES
1) Replace printhead.
2) Replace printhead ribbon
cable.
NO
Go to Step 8.
YES
Replace drive motor assy.
(see page 7–17).
NO
Go to Step 9.
YES
Go to Step 11.
NO
Go to Step 10.
Troubleshooting
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Table of Contents
Troubleshooting
