Maintenance
5-44 HPR800XD Auto Gas – 806500
Pump motor drive board PCB7
D1
D30D32
D10
D31
TP3
TP10
TP4
TP2
TP1
TP6
TP12
TP5
D35
D36
141027
Control PCB test points
Test point
number Description
Test point
number Description
Test point
number Description
TP1 Analog ground TP5 + 5 V TP9 Digital ground
TP2 Digital ground TP6 A + 3.3 V TP10 + 3.3 V
TP3 Reset\ TP7 + 3.3 V TP11 SCIRXD
TP4 Reset TP8 SCITXD TP12 LINEFB +
Control PCB LED list
LED Description Status
D1 + 15 V OK On when +15 voltage is OK
D10 + 5 V OK On when +5 voltage is OK
D16 + 3.3 V OK On when +3.3 voltage is OK
D30 IPM temperature alarm output Off when OK. On when there is a sustained over-current condition.
D31 Temperature Off when OK. On when there is a temperature fault.
D32 IPM alarm output
Off when OK. On when there is an internal overtemp, over-current, or bad gate
supply-drive voltage.
D35 Pump motor drive OK On when pump-motor-drive is OK
D36 Pump motor drive enable On when enabled
Note: The inductor on the pump motor-drive board makes a noise during operation that has been
described as a “hum”, “sing”, and “click”. This is normal and can be disregarded.
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