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Locate Sensor S42:
•
Slide the book drawer tray all the way out of the eWire.
•
Block the sensor path by covering the sensor beam path
holes at the upper portion of the book drawer.
•
S42 has 2 emitters and 2 receivers, both must be blocked to
check the sensor.
S42 is located in the book drawer
Procedure
1. Do
GP 6.3.2
SENSORS Procedure. Check to make sure all sensors
change state from "1" to "0" when blocked.
If any sensor shows "0" when uncovered, clean that sensor. Also
check if there is any obstacle in the sensor window.
All sensors operate correctly
Yes- Go to Step 2
No- Go to Step 3
GBC eWire
2. Test the open voltage reading of the sensor. To do this, ensure that
the path between the sensors is clear, and place one lead of a multi-
meter on the test point with the appropriate sensor label on the AC
board, and the other lead on the ground test point.
Voltage reading is less than 0.4V
Yes- Go to Step 3
No- Go to Step 4
3. Make sure the sensor wire is connected securely at the Sensor and at
the Main Control Board (PL 5.27). Do REP 1.5 to remove the Rear
Cover to gain access to the connector at the Control Board. Refer
to
GP 6.22
to locate the termination location for each sensor.
All the connections are made securely
Yes- Go to Step 4
No- Make the connection and return to normal operation.
4. Replace the faulty sensor board.
This clears the fault
Yes- Resume normal operation
No- Go to Step 5
5. Visually inspect the Cable from the sensor all the way to the Control
Board (PL 5.27). If the Cable is damaged, replace the Cable. See
Section 7 and
GP 6.22
for cable part numbers and locations.
Sensor cable looks okay
Yes- Go to Step 6
No- Go to Step 7
6. Do
GP 6.3.7
FIRMWARE UPGRADE Procedure to Re-flash the
firmware for the eWire.
This clears the fault
Yes- Resume normal operation
No- Go to Step 7
7. Do REP 11.1 or 11.3 to replace the Main Control Board (PL 5.27).
This clears the fault
Yes- Resume normal operation
No- Escalate to second level
01/26/2018
6-33
General Procedures and Information
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