Smiths Medical Medfusion 3000 Series, Technical & Service Manual

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Parts Replacement
81 40-5648-51B
and reinstall the battery pack.
Follow retest guidelines listed in the Calibration and
Adjustment section to verify pump functionality be -
fore returning it to use.
Main board
This section defines the steps for removing and replac -
ing the Main Board for the Medfusion™ 3000 Series
pump.
Tools needed
For this disassembly procedure you will need:
• Torque screwdriver with Phillips head & small
flat head
Always work at an electrostatic-controlled work sta-
tion
when disassembling the pump.
Removing the main board
1. Disconnect the pump from AC power source.
2. Open the pump housing, remove battery pack,
and separate the top and bottom halves.
3. Disconnect the interconnect ribbon cable from the
main board at J9.
4. Loosen the 2 terminal block screws connecting the
fiber optic back light to the main board, then pull
the fiber cable assembly from the terminal block.
5. Disconnect all cable connections on the main
board. These include:
• Keypad ribbon cables at J10.
• Motor cable at J3.
• Position pot cable at J6.
• Display cable at J12.
• Ear clip sensor cable at J2.
• Barrel clamp flex circuit at J4.
• Plunger cable at J11 and unscrew the cable
clamp.
6. If present, clip the wire tie securing the 2nd back -
light cable.
7. Remove the 2 pan head screws securing main
board, and carefully remove the main board from
housing.
Replacing the main board
1. Place the new main board into the housing. It
should rest in the slot on the extrusion, and align
the mounting holes with the 2 stand-offs.
2. Secure the main board with the 2 pan head screws.
Torque to 60 in oz (0.8 Nm).