Canon AS-100M Field Service Manual page 87

Set position mark of CRT unit.
Remove four retaining screws of CRT unit.
Cut off the band binding key internal cables which are fixed
at the front of CRT unit, and take out the fan cable.
Remove CRT unit from MAIN UNIT, then remove the shield plate
from CRT unit by two retaining screws.
shield plate to spare CRT unit.
Mount spare CRT unit to MAIN UNIT, and tighten retaining screws
while aligning it to the marked set position.
(T) Connect all disconnected cables.
[Adjustment] (Same for B/W and COLOR)
Confirm the operation with a test program
(Fig. 5.2.8)
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