Welch Allyn 220 Disassembly And Repair Download Page 7

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. D Welch Allyn Atlas Monitor 69

12. CO

Exhaust Removal.

Remove the CO

exhaust cover and

remove the CO

connector from the E-Pac

foam.

13. Pryon PCB Removal.

Remove connectors from Pryon PCB. Pull

Pryon PCB from E-Pac foam.

14. E-Pac Foam Removal (Top).

Remove the top E-Pac foam.

Summary of Contents for 220

Page 2: ...ESD Circuit Boards are sensitive to static electric ity Use wrist straps ESD mats and ESD storage bags 1 Battery Door Removal Remove the two screws holding the bat tery door Remove the battery door 2 Battery Removal Remove the battery connector from the main PCB Remove battery Model 220 623NP ...

Page 3: ...n Atlas Monitor 65 3 Rear Housing Removal 3 1 Remove the four Torx head machine screws Use a 10 Torx driver 3 2 Pull the rear housing away from the front panel Take special care not to dam age any cables 3 3 Flip the housing forward Take special care not to damage any cables ...

Page 4: ... how hose fits in E Pac Foam The hose fits over wiring keeping wiring secure 4 Printer cable and Display Cable Removal Remove both Printer and Display PCB cables from the Main PCB 5 Power Supply Ground Wire Removal Remove the two ground connectors from power supply chassis Printer Cable Display PCB Cable ...

Page 5: ...rap Removal Cut the tie wrap that secures the ground wires to the E pac foam 7 CPU Removal Remove the CPU from the Main PCB 8 Main PCB Removal Use a tool T 16654 to pry the main Board away from the Deflection Board Pull the E pac tab to the right as you pry Support the Main PCB while titling it away ...

Page 7: ...elch Allyn Atlas Monitor 69 12 CO2 Exhaust Removal Remove the CO2 exhaust cover and remove the CO2 connector from the E Pac foam 13 Pryon PCB Removal Remove connectors from Pryon PCB Pull Pryon PCB from E Pac foam 14 E Pac Foam Removal Top Remove the top E Pac foam ...

Page 8: ...Atlas Monitor Service Manual 6200 43E Rev D 15 Power Supply Removal Slide the power supply out from the E Pac Foam 16 Power Supply Fuse Location NOTE Notice power supply and power supply fuse location 17 Fan Removal Slide fan out from E Pac foam Fuse ...

Page 9: ...18 E Pac Removal Lower Remove lower E Pac foam from unit 19 Deflection PCB Removal Carefully remove the small deflection PCB from the CRT 20 CRT Removal Remove the two machine screws holding CRT to the front panel NOTE Notice how the ground wire is attached and is located along the side of CRT ...

Page 10: ...anual 6200 43E Rev D NOTE The CRT and deflection PCB are factory tuned as a unit and are sold only together as a unit 21 Display PCB Removal Remove all 9 self tapping screws that hold the Display PCB to the Bezel NOTE Notice the correct orientation of CRT screw and washer ...

Page 11: ...Button Removal Use a small screwdriver to push the door button tab up and away from the pin that locks it onto the printer frame NOTE Notice how the printer button is being removed 23 Printer Assembly Locking Tab Release Pull the locking tab down and towards the front of the rear housing assembly Locking Tab ...

Page 12: ...in to pull the positioning slots towards the front of the rear housing and then out from the rear housing 25 Printer Assembly Removal After printer positioning slots have cleared the front rear housing pull the printer down and out of the rear housing 26 Printer Lip Assembly Observe how the printer assembly fits into the lip of the rear housing Positioning Slots ...

Page 13: ...Disassembly and Repair Section 4 Service Manual 6200 43E Rev D Welch Allyn Atlas Monitor 75 27 Printer Cable Routing Observe how the printer cable lies over the printer PCB ...