6-8 Maintenance
m. Removal of the Display Inverter Board
The display inverter removal procedure refers to the view of figure 8-4 & 8-16.
Tools Needed:
• T6 Torx driver
• T10 Torx driver
• T25 Torx driver
Procedure:
• Remove the upper cover assembly (6.2.1.a)
• Open the front bezel (6.2.1.b)
• Tilt the unit on its side.
• Remove the four 4-40 x ¼” screws which secure the Inverter cover to the front
frame.
• Disconnect LCD Display power cable cables from DC-AC Inverter board
• Disconnect the inverter power cable from the inverter board.
• Remove the two 4-40 x ¼” screws which secure the inverter to the front frame.
• Pay close attention to the two small standoffs which are behind the inverter board
and come off when the screws are removed.
n. Removal of the Display and Touchscreen
The display and touchscreen removal procedure refers to the view of figure 8-4,
figure 8-15 and figure 8-16.
Tools Needed:
• T10 Torx driver
• T25 Torx driver
Procedure:
• Remove the upper cover assembly (6.2.1.a)
• Open the front bezel (6.2.1.b)
• Remove the front frame assembly (6.2.1.j)
• Disconnect the ribbon cable from P1 of the USB Hub to the encoder board.
• Remove the six 4-40 x ¼” screws which secure the front bezel to the front frame
assy.
• Remove the knobs from the encoders.
• Remove the front bezel.
• Remove the four 4-40 x ¼” screws which secure the Inverter cover to the front
frame.
• Disconnect the TFT power wires from the DC-DC inverter board.
• Remove the four 4-40 x ¼” screws which secure the display and touchscreen to
the chassis.
• Remove the display and touchscreen from the chassis paying close attention to
the wires as they pass through the chassis opening.
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