Table Of Contents - ELCOM Euro-50 Service Manual

Service manual
1. INTRODUCTION .............................................................................................................. 7
1.1. General specifications ........................................................................................................................ 8
1.2. Hardware specifications ..................................................................................................................... 8
2. DISASSEMBLING THE CASH REGISTER ..................................................................... 9
2.1. Procedure for disassembling the cash register ............................................................................. 10
2.1.1. Removing the cash register covers ........................................................................................................ 10
2.1.2. Replacing the cash register modules ..................................................................................................... 14
2.1.2.1. Replacing the accumulator ............................................................................................................. 14
2.1.2.2. Replacing the power supply board - DPS E50 PWR ...................................................................... 14
2.1.2.3. Replacing the motherboard - DPS E50 MB .................................................................................... 15
2.1.2.4. Replacing the silicone keyboard ..................................................................................................... 15
2.1.2.5. Replacing the printer ...................................................................................................................... 15
2.1.2.6. Replacing the external paper sensor .............................................................................................. 17
2.1.2.7. Replacing the journal motor reel ..................................................................................................... 17
2.1.2.8. Replacing the reserve battery ......................................................................................................... 19
2.1.2.9. Replacing the cashier display ......................................................................................................... 19
2.1.2.10. Replacing the customer display .................................................................................................... 20
2.1.2.11. Installation of the RS232 interfaces COM1, COM2 ...................................................................... 20
3. TESTING THE CASH REGISTER ................................................................................. 23
3.1. Switching the cash register into the programming P-mode - Tests menu .................................. 24
3.2. Tests for the displays ........................................................................................................................ 24
3.2.1. Progress of the test for the character displays ..................................................................................... 24
3.2.2. Progress of the test for segmented displays ......................................................................................... 25
3.3. Printer tests ....................................................................................................................................... 25
3.3.1. Printing test ............................................................................................................................................... 25
3.3.2. Testing the thermal printer platen position sensor ............................................................................... 25
3.3.3. Testing the paper ribbon sensors ........................................................................................................... 25
3.4. Keyboard test .................................................................................................................................... 25
3.5. Testing the external interfaces ......................................................................................................... 26
3.5.1. Testing the serial interfaces COM1 and COM2 ...................................................................................... 26
3.5.2. Testing the USB interface ........................................................................................................................ 26
3.5.3. Testing the SD card interface .................................................................................................................. 27
3.6. Testing the power supply ................................................................................................................. 27
3.7. Displaying the version of the software ........................................................................................... 27
4. REMOVING MALFUNCTIONS ...................................................................................... 29
4.1. Supply voltage for the cash register ............................................................................................... 30
4.2. Display malfunctions ........................................................................................................................ 30
4.2.1. Incorrect images on a character display ................................................................................................ 30
4.2.2. Incorrect imaging on the 7-segment display ........................................................................................ 31
4.3. Printer malfunctions ......................................................................................................................... 31
4.3.1. The printer motor advances the paper ribbon, but the printing is incomplete or blank .................... 31
4.3.2. Printer prints everything onto one microline -printer motor stops (compressed printing) .............. 32
4.3.3. Light printing ............................................................................................................................................. 32
4.3.4. The paper ribbon does not wind reliably or at all on the winding reel ................................................ 32
4.3.5. The cash register inexplicably signals the absence of one of the paper ribbons
or a lifted printer head ........................................................................................................................................ 32
4.3.6. Cash register inexplicably reports an overheated printer head ........................................................... 33
Elcom s. r. o.
CONTENTS
Euro-50