
Unit 7: Replacement Procedures
GL4xxe Series Service Manual
7-14
RIBBON SENSOR REPLACEMENT
Before proceeding with the replacement, remove the Left-Hand Cover as detailed in Figure 7-3a in this chapter.
1. Locate the area described in Figure 7-10, and remove the two Bind P tight screws marked (1).
2. The two Photo Interrupters marked (2) can be removed and replaced as necessary.
3. Reverse the procedure above when reinstalling any new sensors.
4. Perform standard checks to confirm that the sensors are in working order.
Figure 7-10, Ribbon-Sensor Replacement
NOTE: Sensors may malfunction due to dirt buildup, but their function may be
restored upon cleaning. Replace sensors only when you are sure they have failed
electrically.
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