Rap 2.10 Door Interlocks - Trimmer - Challenge CMT-130TC Service Manual

RAP 2.10 Door Interlocks – Trimmer
Inputs 8, 11, and 29
Door interlock switches are located on each of
the trimmer's three doors: front, side, and rear
(Figure 2-9).
Possible Fault Indicators

A "door open" message is displayed
while all doors are closed.

A door is open, but the machine contin-
ues to operate.

A door is open, but no message is dis-
played on the screen.
Initial Actions
Check that all three doors are securely closed.
Check and repair loose wires 83A, 102, 103,
104 at the electrical panel. Check and repair
loose wires on all 3 door interlock switches.
Procedure (does not operate with doors
closed)
1. Does the screen show a "door open" mes-
sage?
Y N
Cycle power OFF and then back ON. Then
go to the diagnostic screen (GP 6.2 In-
put/Output Diagnostics). Open each door. Is
a tone heard with each opening?
Y N
Perform RAP 2.11 Interlock Test. If this
does not fix the problem, disconnect
power and replace the main PWB (REP
4.23 Main PWB Replacement).
Disconnect power and replace the Open
Door Indicator PWB (Figure 2-10).
2. Check the operation of the indicated inter-
lock switch and make sure that the actuator
2. Status Indicator RAPs
key engages fully into the switch body when
the door is closed, and pulls out of the
switch body when the door is opened. Ad-
just if necessary (GP 6.11 Keyed Interlock
Switches). Did this fix the problem?
Y N
Perform RAP 2.11 Interlock Test and re-
place any defective switches.
Repair complete.
Procedure (operates with a door open)
WARNING
Do not operate the machine until this switch
is replaced and functioning properly. Failure
to do so could allow the machine to operate
in an un-safe state. Serious injury or death
may result.
1. Check the operation of the applicable inter-
lock switch and make sure that the actuator
key engages fully into the switch body when
the door is closed, and pulls out of the
switch body when the door is opened. Ad-
just if necessary (GP 6.11 Keyed Interlock
Switches). Did this fix the problem?
Y N
Perform RAP 2.11 Interlock Test and re-
place any defective switches.
Repair complete.
MAY 2019
2-18
Figure 2-9. Door Interlocks
Figure 2-10. Open Door Indicator PWB
CMT-130TC Book Trimmer