Telpo TPS900 Faq Download Page 11

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TPS900 repair user guided V1.0

The green frame is the NFC antenna.
Or try to replace the NFC antenna.

Change the NFC Module with another normal one.

3.11 Touch screen not work

If the touch screen works in some area, and if it can enter into the settings menu,
please enter into menu:
Settings->Developer Option
Enable “Show touches” and “Pointer location” option.

Summary of Contents for TPS900

Page 1: ...NOLOGY CO LTD Address 5 F Zonghe Building Hantian Technology Town Guiping RD Nanhai District Foshan City Guangdong China 528251 Telephone 0086 757 86227898 Fax 0086 757 86323369 Web http www telpo com...

Page 2: ...e power on key 5 3 4 LCD display color changes appear obvious ladder 5 3 5 Do not detected SIM CARD 5 3 6 Do not detected the wireless module 6 3 7 Can not shown the wireless signal 6 3 8 Wireless dat...

Page 3: ...TPS900 repair user guided V1 0 2 1 How to disassemble the device 1 First Remove the printer cover 2 Unlock the 6 screws...

Page 4: ...ation method Cross test method Test every function module with Cross test method and locate where the fault in Temperature judgment method Turn on the POS for a moment Touch every main IC or the circu...

Page 5: ...n key Volume key and function key Maybe one or two keys are embed in the device and lead to the key is always touched 5 Check the battery connecting PINs are ok or not Maybe some PINs become broken Or...

Page 6: ...pear obvious ladder 1 Check the cable which connects the LCD to the mainboard is connected well or not Try to disconnect it first then connect it again 2 Maybe the wireless Module Pins which connect t...

Page 7: ...the Baseband version is blank or Unknow it means that the device can not detect the wireless module 1 Try to reload the firmware 2 Try to re solder every Pins of the wireless Module 3 Try to change t...

Page 8: ...8 Wireless data connection not work a Enable the date usage option Settings Data usage Select the service provider name Enable the Cellular data option b If it still can not connect to data usage plea...

Page 9: ...network type If you are not sure you can select Global Click Access Point Names to select the correct Access Point Name Generally it need set APN manually Or try to Click Network operators to search...

Page 10: ...ttery cover and remove the battery wait for a moment install the battery again Turn on the POS 4 If you enabled the USB debugging option please disable USB debugging option first then test it again 5...

Page 11: ...replace the NFC antenna 8 Change the NFC Module with another normal one 3 11 Touch screen not work If the touch screen works in some area and if it can enter into the settings menu please enter into...

Page 12: ...ange the screen 5 Try to change mainboard with a normal one 6 If still has the same problem maybe the problem is on the screen Then ask manufacture for parts to repair it 3 12 Can not charge battery T...

Page 13: ...working 1 First to check if it is software issue For example Check if it enabled the WIFI option Check if the WIFI setting is ok 2 If it has not software issue please open the POS to check hardware is...

Page 14: ...t can detect the print driver and print with Telpo s demo app If it does not show the print driver version it needs to load the firmware again c Check the print cable is connected well or not Or try t...

Page 15: ...ear wheel of the print header Try to change the gear wheel Or try to replace the feed paper roller 4 Re load the firmware 5 Change the whole printer header 6 Change the mainboard 3 15 Speaker issue 1...

Page 16: ...TPS900 repair user guided V1 0 15 5 Maybe the Module s output pin for speaker becomes short circuit 6 Try to replace the mainboard...

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Telpo TPS900, Faq

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