ELCOM Euro-500T Handy, Руководство по обслуживанию

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© Elcom Ltd.
Service manual
Euro-500T Handy
4.8 NiCd battery replacement ........................................................................................................ 37
4.9 Keys and keyboard replacement ............................................................................................ 37
4.10 Replacement of displays .......................................................................................................... 39
4.10.1 Replacement of Euro-500T Handy (segment/segment) displays ................................................ 39
4.10.2 Replacement of Euro-500T Handy (alpha/segment) displays ..................................................... 40
4.11 Cash register connectors ........................................................................................................ 41
4.11.1 Connectors on mainboard of electronics .................................................................................... 41
4.11.2 Connectors for connecting external appliances .......................................................................... 41
4.12 Back-light installation of segmented LCD display ................................................................ 42
4.13 Connecting of external drawer ................................................................................................ 43
4.14 Connecting of external keyboard ............................................................................................ 44
4.15 Interconnecting of Euro-500T Handy and PC through RS-232 interface ............................ 45
4.16 Connecting of scanner and scales through RS-232 interface ............................................. 45
5 CASH REGISTER TESTING ........................................................................................................ 46
5.1 Test of displays ......................................................................................................................... 46
5.2 Printer test ................................................................................................................................. 47
5.2.1 Testing of printing ....................................................................................................................... 47
5.2.2 Testing of scanning the thermal printer head position .................................................................. 47
5.2.3 Testing of paper ribbons sensors .......................................................................................... ...... 48
5.3 Keyboard tests .......................................................................................................................... 48
5.3.1 Keyboard test 1 .......................................................................................................................... 48
5.3.2 Keyboard test 2 .......................................................................................................................... 49
5.4 Communication interface tests ............................................................................................... 50
5.4.1 Test of RS-232C serial interface for the PC ................................................................................ 50
5.4.2 Test of RS-232C serial interface for the scanner and electronic scales ...................................... 50
5.4.3 The test of serial interface for the external PC keyboard ............................................................. 51
5.5 Test of cash register drawer .................................................................................................... 52
5.6 Fiscal memory tests.................................................................................................................. 52
5.6.1 Tests of data reading from the fiscal memory ............................................................................. 52
5.6.2 Test of data recording to the fiscal memory ................................................................................ 53
5.6.3 The operating voltage control for the fiscal memory .................................................................... 53
5.6.4 The test of the control signals I for the fiscal memory ................................................................. 54
5.6.5 The test of the control signals II for the fiscal memory................................................................. 54
5.7 Test of the control sum of EPROM memory ........................................................................... 55
5.8 Battery tests .............................................................................................................................. 55
5.8.1 The test of battery condition ........................................................................................................ 55
5.8.2 The test of VCC1 supply ............................................................................................................. 55
6 FAILURE REMOVAL .................................................................................................................... 56
6.1 Failures in supply section ........................................................................................................ 56
6.2 Failures of micro-processing system ..................................................................................... 57
6.3 Failures of print ......................................................................................................................... 58
6.4 Failures of visual display ......................................................................................................... 60
6.5 Failures of keyboard ................................................................................................................. 60
6.6 Failures of communication ...................................................................................................... 61
6.7 Failures of current date and time............................................................................................. 61
6.8 Other failures ............................................................................................................................. 61
7 THE LISTS OF PCB COMPONENTS .......................................................................................... 62
7.1 Classification of cash register components .......................................................................... 62
7.2 List of electronics mainboard components ........................................................................... 62
7.3 List of keyboard components.................................................................................................. 69
7.4 List of display segmented module components ................................................................... 69
7.5 List of components on board of connectors ......................................................................... 70
7.6 List of components on interconnection board ...................................................................... 70
7.6.1 List of components on interconnection board of Euro-500T Handy (segment/segment) .............. 70
7.6.2 List of components on interconnection board of Euro-500T Handy (alpha/segment) ................... 71