GBC eWire Service Manual page 387

GP 6.4.6 Check S47, S48
Locate Sensor S47 and S48:
•
Do REP 6.1 to remove the Closer Module
•
S47 and S48 are located inside the Closer Module
•
Note that S47 and S48 are not accessible without disassembling
the module and thus cannot be checked with the module plugged
in.
Check Sensors Procedure (Sensors S47 & S48):
1. 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
Section 7 Wiring and GP 6.22
All the connections are made securely
Yes- Go to Step 2
No- Make the connection and resume operation
General Procedures and Information
to find the Cable termination locations.
2. Replace the Sensor with a known good sensor of the same type,
such as S20. Refer to GP 6.4.3
you are going to use before installing it in the S47 or S48 slot.
Resume testing and verify if the issue is resolved.
Replacing the sensor corrects the issue
Yes- Replace the faulty sensor and resume operation
No- Go to Step 3
3. 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 4
No- Replace the faulty cable and resume operation.
4. Do GP 6.3.7 FIRMWARE UPGRADE Procedure to Re-flash the
firmware for the eWire.
Re-flashing firmware clears the fault
Yes- Resume normal operation
No- Go to Step 7
5. Do REP 11.3 to replace the Main Control Board B (PL 5.27).
This clears the fault
Yes- Resume normal operation
No- Escalate to second level
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to verify the operation of the sensor
GBC eWire