Operating instructions

Error Detection and Recovery
18
GeBE E + F GmbH • www.oem-printer.com • GeBE Doc. No.: SMAN-E-689-V1.1 • Thermal Printer GPT-4378-FLASH-70-iBT
14 Error Detection and Recovery
Not every error means that there is a printer error that cannot be cleared by the user.
Users will save time and money by recognizing and clearing simple errors on their own.
Symptom
Possible Cause
Remedy
Paper
The printer seems to be
printing. Paper is transported,
but is not blackened.
Paper: Wrong side toward print head. Only
one side of the paper can be printed on.
Insert paper correctly. The thermosensitive side should be
turned to the outside of the roll (most of the time). Try the
finger nail test: Drag the tip of a finger nail across the paper,
pressing down. The friction heat causes the thermosensitive
side to blacken.
Power Supply
Printer can not be reactivated
by pressing the FEED key.
At the beginning of printing, the
LED goes out just briefly.
The printer only prints a few
dots in one line.
No power.
Rechargeable battery: not inserted or not
charged
Check power supply.
Recharge battery. The green LED should light up no later than
after 1 minute.
The power supply is not optimal.
Rechargeable battery: not inserted or not
charged.
Recharge battery. The green LED should light up no later than
after 1 minute.
The paper feed works, but the
self test does not.
The printer only prints a few
characters in one line. If more
is entered, it stops printing
completely.
The printer loaded over night
however it prints only few or
not.
Bluetooth®
The rechargeable battery is used up or was
not correctly loaded. Each over-discharging
damages the battery strongly and leads to a
loss of capacity.
Fully discharged batteries can disturb the charging in such a
way that it breakes in at less than 30 minutes and switches to
preservation charge. In this case please start to charge again
by reputting. Please always switch off the printers if they
lengthen are not used and please load them every 3 months.
The printer cannot be found in
the BT network.
The printer is connected over
BT but doesn't print.
Data
The printer does not react on
pressing the FEED button.
- Possible undervoltage at the BT
transmitter or the printer.
- Wrong entry of pin code
- A second accessory is connected.
- "Data Session" not open (App)
- Apple identification and authentification
failure (no paper feed after BT connect)
- Restart transmitter/printer, recharge battery.
Turn off printer and wait for app. 5 seconds.
Switch printer on and wait for app. 10 seconds.
Then search again.
- Restart printer and Apple Device and type in right pin
code (0000).
- Only one accessory is allowed to be connected at a Apple
device. Therefore switch off other accesseries and
reconnect the printer.
- Open "Data Session" according to Framework manual.
- Switch ON/OFF Bluetooth® of Apple device to cancel BT
connection or switch off the printer and reconnect the
printer again.
Incompleted graphic line stucks in printer
buffer.
Push OFF/NEXT button to complete the graphic line.
Printer can not be switched off.
Character
The printer prints wrong
characters.
Wrong character set selected.
Select character set "GBDefaultString" under menue GeBE
Printer Setup.
The following tips are meant helping you to find/eliminate a fault:
Hardware RESET: Triggered by holding down the OFF/NEXT key for more than 3 seconds.
This causes the printer to be set to the parameters in the batch file TINIT-F or TINIT-E.
Test printout: Is triggered by holding down the FEED feed key for more than 3 seconds after reactivation from po-
wer OFF (switching off with the OFF/NEXT key).