Publication 2364F-5.05 - March 1999
Testing Components
4-3
Testing the Main Control Board
The main control board regulates the power structure operation, and is
capable of communication with external devices through SCANport and
analog I/O.
Figure 4.1
Main Control Board
Note: A full listing of test points and a detailed drawing of the main
control board can be found in Appendix A.
Important: Always record or store parameters before replacing the main
control board, upgrading firmware, or replacing the battery for
the battery-backed memory (parameters can be stored in the
internal memory of a GPT or Series B HIM, or can be stored on
a PC using DriveTools).
x
x
x
x
x x x
Main Control Board
TP4 (+5V)
LEDs
TP20 (+15V)
TP26 (-15V)
TP23 (AGND)
TP32 (VR)
TP33 (VS)
TP34 (VT)