ii
Contents
1.
FUNDAMENTAL OF THE SYSTEM
................................ 2
1.1
Overview ........................................................................................................... 2
2.
ELECTRONICS
............................................... 3
2.1
Summary of Board Connectors ....................................................................... 3
3.
MECHANISM
................................................ 7
3.1
Replacing the Media Cover .............................................................................. 7
3.2
Replacing the Keys Control Board .................................................................. 9
3.3
Replacing the Bluetooth Control Board (Option) ......................................... 10
3.4
Replacing the Media Holder Assembly ......................................................... 11
3.5
Replacing the Main Board Assembly ............................................................ 14
3.6
Replacing the Print Head Assembly .............................................................. 15
3.7
Replacing the Stepping Motor ....................................................................... 16
3.8
Replacing the black mark sensor assembly ................................................. 17
3.9
Replacing the WiFi control board (Option) ................................................... 18
4.
TROUBLESHOOTING
......................................... 19
4.1
Common Problems ......................................................................................... 19
5.
Maintenance
............................................... 21
Revise History
................................................ 22
Summary of Contents for Alpha-3R
Page 1: ...i SERVICE MANUAL Alpha 3R Direct Thermal Portable Printer ...
Page 4: ...3 Interior View 1 Print head 2 Black mark sensor 3 Media holder 4 Platen 1 2 4 3 ...
Page 5: ...2 Rear View 1 Li ion battery 2 Battery open clasp 3 USB interface 4 Power jack 3 2 4 1 ...
Page 8: ...5 8 TPH connector 9 Paper sensor Pin Description 1 3 3V 2 BM_E 3 BM_R 4 3 3V ...
Page 9: ...6 Main board bottom Connector Description 1 Battery connector 1 ...
Page 11: ...8 3 Use a needle to remove the iron bar 4 Reassemble the parts in the reverse procedures ...
