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TABLE OF CONTENTS
1 Introduction..................................................................................................................................................................1
2 Installation procedure..................................................................................................................................................1
2.1 unpacking ..............................................................................................................................................................1
2.2 Emergency cash drawer release...........................................................................................................................3
2.3 Preparation for use .............................................................................................................................................3
Dip switch setting....................................................................................................................................................3
Initial reset procedure.............................................................................................................................................3
Diagnostics...............................................................................................................................................................4
3 Theory of operation ......................................................................................................................................................5
3.1 system block diagram............................................................................................................................................5
3.2 circuit description..................................................................................................................................................6
3.2.1 power circuit ...................................................................................................................................................6
3.2.2 KEY BOARD CIRCUIT..................................................................................................................................7
3.2.3. display circuit ................................................................................................................................................8
3.2.4. printer drive circuit .......................................................................................................................................9
3.2.5. Comparator circuit ........................................................................................................................................9
3.2.6 Paper near end sensor circuit ......................................................................................................................10
3.2.7. Motor drive circuit(paper feed motor) ........................................................................................................11
3.2.8 cutter motor drive circuit .............................................................................................................................11
3.2.9. Battery charge circuit..................................................................................................................................12
3.2.10. PF circuit....................................................................................................................................................12
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Trouble shooting ......................................................................................................................................................15
5 CONNECTOR LAYOUT OF CPU BOARD .........................................................................................................17
5.1
CONNECTOR TABLE......................................................................................................................................18
5.2 Standard inner cable pin assignment ................................................................................................................19
5.3 Optional cable pin assignment ...........................................................................................................................19
6 Appendix .....................................................................................................................................................................20
