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8.55 Disassemble the Encoder Beside the Segment Display
8.55.1 Prepare for Disassembly
8.55.1.1 Tools
During parts disassembly and replacement, the following tools may be required:
Phillips screwdriver
220 mm torque wrench
8.55.1.2 Preparations
Before disassembly,
Make sure that the anesthesia machine is turned off and disconnected from the A/C power
source.
8.55.1.3 Pre-disassembly
1. Refer to 8.1.1Open the Service Door to open the service door.
2. Refer to 8.1.2Remove the Auxiliary Output Assembly to remove the auxiliary output
assembly.
3. Refer to 8.1.3Remove the Rear Cover Plate of the Work Surface to remove the rear cover
plate of the work surface.
4. Refer to 8.1.4Remove the Work Surface Cover Plate FRU to remove the work surface
cover plate.
5. Refer to 8.1.5Remove the Instrument Panel Assembly to remove the instrument panel
assembly.
8.55.2 Remove the Encoder Beside the Segment Display
1. Disconnect the cables (marked by □ in the figure) from the encoder beside the segment
display.
2. Remove the four screws from the encoder with the Phillips screwdriver and pull the encoder
assembly straight up to remove it.
3. Remove the nut from the encoder assembly with the 220 mm torque wrench, remove the
metal sheet, and take out the encoder.
display
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