DP350 User's Manual
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Chapter 4 Troubleshooting
Most problems you may encounter while operating your printer, herein, have simple solutions for those
problems.
You can check the operation of your printer using the self test. See “Printer self-test function” on
chapter 1.7. If the self test works properly, the problem probably lies in the computer, the software, or
the interface cable. If the self test does not work, contact your dealer or qualified service person for
assistance.
Note: Press LOAD/EJECT key while turning on the printer, you can run the Chinese self test.
Press TEAR key while turning on the printer, you can run the English self test.
Note: If you are an experienced user or a programmer, you can print a hexadecimal dump to
isolate communication problems between the printer and computer. To print a hex dump,
firstly to install paper and turn off the printer. Next, hold down the LF/FF and TEAR keys
while you turning on the printer. Then send data from your computer. The printer prints
all the codes it receives in hexadecimal format.
4.1 Power Supply
Power is not being supplied normally.
Phenomenon 1: The LEDs on the control panel do not go on, and the printer has no action.
Solutions:
1. Check that the power cord is properly plugged into the electrical outlet.
2. If the electrical outlet is controlled by an outside switch or automatic timer, use another outlet.
3. Plug another electrical device, such as a lamp, into the outlet to determine whether the outlet is
operating properly.
Phenomenon 2: The LEDs come on briefly and then go off. The LEDs stay off even when the
power is turned on again.
Solutions: Check whether the printer’s rating voltage is matched with the electrical outlet. If not,
unplug the power cord immediately and contact your dealer or a specified Jolimark service
center for advice. Do not plug the power cord to the electrical outlet again.
4.2 Printing Problem
The printer does not print.
Phenomenon 1: The ONLINE LED is on but nothing is printed.
Solutions:
1. Check whether the Driver is installed properly for your printer, as described on chapter 1.9. Check
the driver’s printer settings.
2. Check both ends of the interface cable. Make sure the cable meets both the printer and computer
specifications.
Phenomenon 2: The ONLINE LED and PAPER OUT LED blink, the printer beeps once.
Solutions: The printer may be out of paper. Load paper in the printer.
Phenomenon 3: The printer sounds like it is printing, but nothing is printed.
Solutions:
1. The ribbon cartridge may not be installed properly. See chapter 1.5.
2. The ribbon may be worn out. Replace the ribbon.
3. The gap adjust lever may be too high. If so, move it to the corresponding thickness position with
the paper.
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