Exchanging The Nano Pump Main Board (Npm Board) - Agilent Technologies 1100 Series Service Manual

3 Repairing the Pump

Exchanging the Nano Pump Main Board (NPM Board)

Frequency
Tools required
Parts required
1 Turn off the pump, disconnect all cables and remove the pump from the
2 Remove the top covers and foam, see "Removing the Top Cover and Foam"
3 Disconnect all connectors from the main board.
Connector
S1
J1
J2
J3
J4
J5
J6
P2
P8
P12
P14
When removing connectors, counterhold on connector J3 with one hand.
NO TE
134
Board defective
Wrench 14 mm
Wrench 7 mm
Wrench 5 mm
NPM board, G2226-66530, exchange part number G2226-69530
stack.
on page 131.
Description
Configuration switch
GPIB
CAN connector
CAN connector
RS232
Remote
Analog output
Power supply
Motor B
Motor A
Encoder A
Connector Description
P11 AIV - A
P15 Leak sensor
P16 Damper
P17 Fan
P18 Interface board
P21 Encoder B
P20 AIV-B
P22 Solvent Selection Valve
P9 EMPV
P19 Flow sensor
1100 Series Nano Pump Service Manual