
B-70315EN/02 7.UNITS
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7.13.1.3 Replacing the shutter switch (thermal and photoelectric
switches)
(1) Remove connector CN52B and CN54B from intermediate PCB
B, then disconnect its cable.
(2) The shutter thermal switch and photoelectric switch are
integrated into a sensor unit. So, remove both switches.
(3) Install a new sensor unit. At this time, ensure that the wire mark
of the photoelectric switch matches the label indication (OPEN,
CLOSE) of the shutter unit. The replacement is completed by
reconnecting to intermediate PCB B.
CAUTION
To prevent stress caused by shutter open/close
operation from being imposed on the cable, the
cable must be run with a sufficient allowance as
shown in Fig. 7.13.