HP 5890 SERIES II Service Manual page 161

` NPD:
a. Tighten the screws securing the detector
PCB interconnect clamps to the thermal
strap.
NPD power control plugs installed in the
wrong position will permanently damage the
NPD detector PCB.
b. Connect the NPD bead power cable from
the detector PCB by pushing it straight in to
the connector receptacle.
c. Install the detector cover and secure using
three screws.
` 19233A/19235A ECD:
a. Tighten the screws securing the clamps
which hold the interconnect in place.
b. Connect the cell collector lead from the
PCB interconnect.
c. Install the detector cover and secure using
three screws.
` G1223A/G1224A ECD:
a. Tighten the screw securing the detector
PCB interconnect clamp to the thermal
strap.
s. Connect the cell anode lead from the PCB
interconnect.
c. Connect any tubing that was previously
attached to the detector purge and vent
tubes.
d. Install the detector top cover and secure
using one screw.
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COLLECTOR
CLAMPS
TOP COVER
ANODE
SVC 4- 91
DETECTOR COVER
INTERCONNECT
CLAMP SCREW
CELL COLLECTOR LEAD
PCB INTERCONNECT
THERMAL
STRAP
CLAMP