System Board Test Points; System Board Connectors; Id Connector (X1); Comwheel Connector (X2) - GE TruSat Technical Reference Manual

System board test points

Test point
E44
E45
E60

System board connectors

ID connector (X1)

Pin # Signal Name
1,2
3,4

ComWheel connector (X2)

Pin # Signal Name
1
2
3
4
5
6

Speaker connector (X4)

Pin # Signal Name
1
2
Signal name
GND
GNDF
GND
Alternate board
configuration B
Alternate board
configuration C
GND
GND
CW_PB+
CW_OUTB
CW_OUTA
CW_VCC
SPEAKER+
SPEAKER–
Description
Non-isolated/chassis ground
Isolated ground
Non-isolated/chassis ground
I/O Description
A A jumper across these two pins will identify a
different board configuration
A A jumper across these two pins will identify a
different board configuration
I/O Description
GND Non-isolated ground
GND Non-isolated ground
I COM wheel push button signal
I Phase B ComWheel input signal
I Phase A ComWheel input signal
O Modulated ComWheel power
I/O Description
I Differential positive speaker signal
O Differential negative speaker signal
Troubleshooting
3–5