User manual

Preventive Maintenance
ProMaster 2500 User Manual 5-39
To see the LEDs on this board (located in the 2500’s base), loosen the two
corner screws that hold the main plate in position on the base and raise
the main plate. Figure 5-19 shows the location of the board. An LED on
that board illuminates when the solenoid control circuitry is sending a
signal to activate the solenoid.
If the LED on the solenoid is not on during the test, make sure that the
logic drive circuit associated with that solenoid is operating correctly.
Refer to the table below to determine the LED associated with each test. If
the LED is on during the test, you can be fairly certain that the solenoid
driver is getting the proper logic signal.
Refer to the table below to select and enter the test number for each
solenoid you wish to evaluate. Press
ENTER
. Then press
START
to begin
the test.
Figure 5-16
Solenoids on the Beam
(test numbers shown)
Position/Function
Solenoid
Test No.
Board
LED No.
Underside of Main Plate, left side of PE
Blower (output track air)
Cutoff (low air pressure to beam)
2
3
S2
S3
Left side of Beam Head
Beam Up/Down
Blow Off (device release)
High pressure (to lower beam)
Vacuum
4
5
6
7
S4
S5
S6
S7
Underside of Main Plate, right side of PE
Clamp (programming module) 8 S8
Unused
N/A 1 S1
1940-1
7
6
5
4