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Alpha Vision Tech Alpha-3R service manual Electronics, Summary of Board Connectors, Main board top

Models: Alpha-3R

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2. ELECTRONICS

2. ELECTRONICS

2.1 Summary of Board Connectors

Main board top

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Connector	Description

1LED & KEY board

2WiFi or Bluetooth module connector

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Alpha Vision Tech Alpha-3R service manual Electronics, Summary of Board Connectors, Main board top

Contents

Direct Thermal Portable Printer SERVICEAlpha-3R MANUALContents 5. Maintenance5.Media holder adjustment knob 6.Media cover 1.LED indicator 2.Feed button3.Power on/off button 1. FUNDAMENTAL OF THE SYSTEMInterior View 1.Tear edge 2.Print head 3.Media holder 4.Platen5.Black mark sensor 1.Li-ionbattery 2.Battery open clasp 3.USB interface 4.Power jack 5.Interface coverRear View 2.1 Summary of Board Connectors 2. ELECTRONICSMain board top Description 3.3V Paper sensorDescription BM EBattery connector Main board bottomConnector Description3. MECHANISM 2. Take the printer top cover off4. Reassemble the parts in the reverse procedures 3.2 Replacing the Keys Control Board 2.Remove two screws on the keys control board4. Reassemble the parts in the reverse procedures 3.3 Replacing the Bluetooth Module Option 3. Disconnect the connector on the board4. Reassemble the parts in the reverse procedures 3.4 Replacing the Media Holder Assembly 5. Reassemble the parts in the reverse procedures 3.5 Replacing the Main Board Assembly 3.6 Replacing the Print Head Assembly Gear holder Gears 3. Remove two screws 3.7 Replacing the Stepping Motor2.Remove the gear holder and two gears 4. Reassemble the parts in the reverse procedures3.8 Replacing the black mark sensor assembly Black mark sensor assembly3. Reassemble the parts in the reverse procedures 5.Reassemble the parts in the reverse procedures 3.9 Replacing the WiFi Module Option4.Replace the WiFi control board 2.Remove two screws on the board4.TROUBLESHOOTING 4.1 Common ProblemsIrregular printing The RS-232setting is incorrectRe-setthe Rs-232setting The printer is in Hex Dump mode Lint-freecloth 5.Maintenance2.The cleaning process is described as following  Vacuum / Blower brush  100% ethanolDate Revise HistoryContent Editor