Unitech MP300 manual Trouble Shooting, To Test the DC Power, Battery and Safety Information

To Test the DC Power:

•Disconnect the AC adapter output cable once the battery has charged for five minutes.

•Press and hold the feed button, then press and release the on/off button and then release the feed button. The printer will print a “self test” receipt.

•If the self test receipt is printed, the DC power is ok.

To Test if the Battery is Accepting the Charge:

•Press the on/off button and wait until all LEDs are off.

•Plug the AC adapter output cable into the printer. Press the on/off button;

the green LED is illuminated and after about 20 seconds the LED should turn off.

•If the amber LED is on, this will continue on through this test indicating that

the battery is accepting a charge and that the charge circuit is ok. The LED will turn off at the end of a 180-minute charge cycle.

Battery and Safety Information

The printer is powered by a 7.4V Li-Ion 2200mAh Battery Pack.

•Charging time in the printer is approximately three hours.

•Take the battery out of the printer during long periods of storage.

•The battery storage temperature is 40°F to 104°F (4°C to 40°C). Do not store a fully charged battery at temperatures greater than 104°F (40°C) for long periods of time – the battery may permanently lose charge capacity.

•The recommended temperature for charging is between 68°F (20°C) to 77°F (25°C).

•Be sure to use a fully charged battery before long or battery intensive

printing sessions. Certain operations (for example, printing receipts with a lot of bar codes and graphics) drain the battery more quickly than others.

•Dispose according to your local regulations. Do not throw in trash.

Caution! Do not disassemble, short circuit, heat above 80°C or incinerate, because the battery may explode.

Recycling your Batteries

The Rechargeable Battery Recycling Corporation (RBRC) is a non-profit organization created to promote recycling of rechargeable batteries. For more information about how to recycle batteries in your area, please visit www.rbrc.org.

Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.

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Chapter 5

Trouble Shooting

Problem		Action
Does not feed paper or	• Remove any jammed supply
has a paper jam	•	Reload paper supply
	•	Check or replace the printer’s battery
	•	Make sure the paper supply is loaded correctly,
Does not print		and not backwards
	•	Verify communication between the host device and
		the printer by disconnecting the communication cable
		and performing a printer self-test
Light printing	•	Check or recharge the battery
	•	Adjust the print contrast through print application
Voids in printing	•	Clean the print-head following the cleaning instruction
		listed under “Print-Head Cleaning” on page 26
	•	Check that the paper supply roll is not out
Red (Error) LED on	• Error reading MSR
	•	The print-head may be hot after extended printing,
		and the printer will pause before resuming printing

If the problem is not identified following the above trouble shooting guide, contact Unitech Technical Support. Support numbers and e-mail addresses are listed on page 3 of this manual.

Other than routine cleaning and other maintenance described on page 26, the printer is not to be personally fixed by the user. It must be returned to an Authorized Service Center. Under no circumstances should the user attempt to take the printer apart.

Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.

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