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Samsung Sam4S ER-290 Manual

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SAM4S ER-290 4-1
4 Disassembly and Reassembly
This chapter describes the disassembly and reassembly procedures for ER-290, electronic cash registers.
WARNING
:
This ECR contains electrostatically sensitive devices. Use caution when handling any components.
4-1 Disassembly
Caution: Disconnect the ECR from the external power source before disassembly.
NOTE: The following directions are given for the ER-290. Differences between the models are identified in the text.
See the Exploded View in Chapter 7.
4-1-1 Upper Case disassembly
1. Lift off the Printer Cover.
2. Remove three screws (B-5 and B-11) in the Upper Case and lift it up.
3. Remove the red and the white connectors in the Main PCB.
4. Remove the Upper Case.
4-1-2 Model-405R 9Epson) Printer Disassembly
1. Unplug the Harness (22Ppin) on the Printer Board.
2. Remove the Paper Roll.
3. Remove the screw (E-20) on the Ground Plate to be disassembling the ground wire between the Printer and the Ground
Plate at the Transformer’s up side.
4. Remove the two screws (C-4) in the Lower Case and pull the Printer Assembly front and up;
5. Remove the two screws (C-1) to be disassemble the Stamp (C-5) and the Bracket Stamp(C-2)
6. Remove the screw (C-13) to be disassembling the Paper Guide (C-12).
4-1-3 Main Board Disassembly
1. Unplug the Harness (E-2) in the Printer Board.
2. Unplug the harnesses in the Main Board.
3. Remove the screws (E-23) at the Transformer and (E-3) on the Main Board.
4. And pull the loch at the bottom side of the Main Board then pull up the Board.
4-1-4 Display Board Disassembly
1. Remove the four screws (B-15) in the Upper Case.
2. Unplug the Harness (ⓒ) connected with the Turret (Rear) Display Board.
3. Remove the four screws(B-17) in the Display Bard.
4-1-5 Mode Key Disassembly
1. Remove the two screws (B-2) in the Upper Case.
4-1-6 Lower Case Disassembly
1. Remove the screw (E-5) in the Lower Case.
4-2 Assembly
Reassembling procedure is the reverse procedure of the chapter 4-1 disassembling.
And confer the Exploded View Chapter 7.
… 14 …


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