Maintenance
5-46 HPR800XD Auto Gas – 806500
Coolant sensor board PCB2
TP8
D
1
PWR GND
TP7
+24V
TP21 TP22
+
15V –15V
+5V
S2
CAN
SW
0
WDI
SW
1
TP18
TP6
+
3.3V
D
2
D8
D7
RX
TX
TP4
+
5V
TP23
TP1
+A
3.3V
TP16
TP10
TP3
TP17
TP15
RESET
TP2
TP9
Control PCB test points
Test point
number Description
Test point
number Description
TP1 A + 3.3 V TP12 Digital ground
TP2 Analog ground TP13 + 3.3 V
TP3 Pressure sensor (for use in the future) TP14 SCIRXD (RS422 transmit)
TP4 + 5 V TP15 Digital ground
TP6 + 3.3 V TP16 Analog ground
TP7 + 24 V TP17 Reset\
TP8 Power ground TP18 Reset
TP9 Coolant flow sensor input TP21 + 15 V
TP10 Chiller flow input (for use in the future) TP22 – 15 V
TP11 SCIRXD (RS422 receive) TP23 Line voltage input
Gas console control board LED list
LED Signal name Color
D1 + 5 VDC Red
D2 + 3.3 VDC Green
D7 CAN TX
D8 CAN RX