Challenge CMT-130, Service Manual

Page: 21 / 226

FEB 2017
CMT 130 Book Trimmer 2-11 2. Status Indicator RAPs
RAP 2.5 Input Power
This procedure is used to establish main, AC
power to the machine.
WARNING
Improper connection of the grounding con-
ductor can result in the risk of electrical
shock. The following must be observed.
Never attempt any maintenance function that
is not specifically called out in the service
procedures.
WARNING
HIGH VOLTAGE! Use extreme caution when
testing High voltage lines. Serious injury or
death may result from unsafe testing prac-
tices.
CAUTION
If the voltage measurements are not as specified
in the following steps, the cause must be cor-
rected.
Voltage Requirements

200 to 240 VAC for 208/230 volts for
60Hz machines

360 to 420 VAC for 380/415 volts for
50Hz machines
Procedure
1. Switch off the power with the red/yellow
switch on the front of the trimmer.
2. Remove the power panel door. Check the
line voltage by measuring the voltage be-
tween the AC lines (L1, L2, L3) at the power
hookup, Figure 2-2. The line voltage should
meet the following specifications:

200 to 240 VAC for 208/230 volts for
60Hz machines

360 to 420 VAC for 380/415 volts for
50Hz machines
3. Does line voltage meet these conditions?
Y N
Have a licensed electrician correct the line
voltage.
4. Switch on the power.
5. Is there line voltage between M1 and M2 at
the power panel, Figure 2-2?
Y N
Disconnect main power and replace the
main power switch (PL 5.1 Main Assembly
59000 (1/12)).
6. Is there line voltage between wires 1 and 2
at the F1 and F2 fuses, Figure 2-2?
Y N
Check continuity and replace blown fuses,
F1 and F2.
7. Remove the
trimmer’s lower front panel.
8. Check proper connection of wires 1, 2, 20,
and 22 to transformer T1, Figure 2-4 (60Hz)
or Figure 2-5 (50Hz). Is there 120 VAC be-
tween wires 20 and 22 at the transformer?
Y N
Disconnect main power and replace trans-
former T1 (PL 5.1 Main Assembly 59000
(1/12)).
9. Is there 120 VAC between wires 21 and 22
at the power panel (Figure 2-2)?
Y N
Check continuity and replace blown fuse,
F5.
10. Is there line voltage between wires 3 and 4
at the F3 and F4 fuse holders, Figure 2-2?
Y N
Check continuity and replace blown fuses,
F3 and F4.
11. 50 Hz machines only: Check proper con-
nection of wires 3, 4, 5, and 6 at the T4
transformer, Figure 2-5. Is there 200-240
VAC between wires 5 and 6 at the T4 trans-
former?
Y N
Disconnect main power and replace the T4
transformer (PL 5.1 Main Assembly 59000
(1/12)).
12. Is there 200-240 volts between wires 18 and
19 at the F6 and F7 fuse holders, Figure
2-2?
Y N
Check continuity and replace blown fuses,
F6 and F7.
13. Is there 200-240 volts between wires 34 and
35 at the upper right EMI filter, Figure 2-2?
Y N
Disconnect main power and replace the EMI
filter (PL 5.15 Power Panel EE-3306-1
(1/2)).
14. Is there 200-240 volts between wires 28 and
29 at the upper left EMI filter, Figure 2-2?
Y N
Disconnect main power and replace the EMI
filter (PL 5.15 Power Panel EE-3306-1
(1/2)).
Normal