Publication 2364F-5.05 - March 1999
Testing Components
4-9
7. Set meter(s) to test for DC voltage.
8. Connect meter leads to the test points indicated in Table 4.E (if
necessary, test only one set of test points at a time).
Table 4.E: Power Supply Test Points–Gate Driver Board
9. With the meter leads connected, reattach the mounting panel for the
main control board.
10.Reconnect all wiring to the main control board (J2, J3, J9, J10, J11, J12,
and TB1).
11.Push the disconnect lever to on and turn the start switch to on.
12.Check the voltage readings. If the readings do not comply with
Table 4.E, replace the gate driver board.
Note: If the gate driver board is damaged, IGBTs and snubber boards
may also need to be tested.
If the board has failed any of these tests, or if the unit continually faults with
the items shown in Table 4.F, the board may be damaged. Consider
replacing the board and/or sending the board to Rockwell Automation for
further testing and repair.
Table 4.F: Typical Faults–Possibly Involving the Gate Driver Board
For additional test procedures, see the appropriate 1336 FORCE service
manual (see Table 4.A).
Test Points
Typical Voltage
TP4 to DGND
4.7 to 5.3V DC
TP5 to DGND
14.4 to 15.4V DC
TB6 to DGND
-14.4 to -15.4V DC
Fault Number
Fault Name
9
Control Volt
16
Desaturization
