Rap 2.48 Book Width Sensor - Challenge CMT-130TC Service Manual

RAP 2.48 Book Width Sensor

Input 28
The book width sensor is a retro-reflective sen-
sor that detects the face edge of books as they
enter into the registration area. The trimmer
uses this sensor to automatically determine the
starting width of a book without the need for the
user to enter in the dimension. The sensor is
mounted to the registration assembly and the re-
flector is mounted to the table in a square indent
(Figure 2-73).
Possible Fault Indicators

"Book Width Error" message is
displayed.

The face jogger repeatedly does not
align with the face edge of the books
properly during registration.
Initial Actions
Check that the reflector on the table in the
square indent is properly installed and not ob-
structed. Replace if faulty (PL 5.10 Main As-
sembly 59000 (10/14)).
Check for loose or damaged wire 82 at the elec-
trical panel.
Procedure
1. Make sure that both the sensor and the re-
flector are not obstructed. Switch the main
power ON and go to the diagnostic screen
(GP 6.2 Input/Output Diagnostics). Does the
diagnostic screen show input "Book Width"
switched on?
Y N
Short wire 82 to 74 at the main PWB. On
the diagnostic screen does input "Book
Width" switch on?
2. Status Indicator RAPs
Y N
Disconnect power and replace the con-
sole PWB (REP 4.24 Console PWB Re-
placement).
Adjust the sensor (GP 6.6 Retro-reflective
Sensors) and replace if faulty (PL 5.17
Power Panel EE-3503 (2/2)).
2. Disconnect wire 82. On the diagnostic
screen does input "Book Width" switch off?
Y N
Disconnect power and replace the console
PWB (REP 4.24 Console PWB Replace-
ment).
3. Adjust the sensor (GP 6.6 Retro-reflective
Sensors) and replace if faulty (PL 5.17
Power Panel EE-3503 (2/2)).
Figure 2-73. Book Width Sensor
MAY 2019
2-56 CMT-130TC Book Trimmer