Challenge 130TC-A-160000, Service Manual

Page: 58 / 282

MAY 2019
2. Status Indicator RAPs 2-46 CMT-130TC Book Trimmer
RAP 2.38 Book in Gripper Sensor
Input 5
The book in position sensor is a retro-reflective
sensor that detects the book in the gripper (Fig-
ure 2-60). If a book is lost during a cycle, the
machine stops and an error message is dis-
played at the console. The sensor is mounted
on the front face of the lower, gripper clamp.
Reflective strips are located on the inside of the
top cover above the gripper’s path.
Possible Fault Indicators

Gripper never clamps books.

Books pass through the trimmer without
being cut.
Initial Actions
Check that the reflective strips are properly in-
stalled inside the top cover and not obstructed.
Replace reflective strips if necessary (PL 5.14
Main Assembly 59000 (14/14)).
Check for loose or damaged wire 35 at the elec-
trical panel and at the terminal block (Figure
2-60).
Procedure
1. Make sure that both the sensor and the re-
flective strips 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 in Grip” on?
Y N
Short wire 35 to 74 at the main PWB. On
the diagnostic screen does input "Book in
Grip" switch on?
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 5.7 Main
Assembly 59000 (7/14)).
2. Disconnect wire 35. On the diagnostic
screen does input "Book in Grip" 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 5.7 Main
Assembly 59000 (7/14)).
Figure 2-60. Book in Position Sensor