HP 5890 SERIES II Service Manual page 117

The following steps require protection against ESD (Electro- Static Discharge).
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Use a grounded wrist strap (part no. 9300- 0969 - large, or 9300- 0970 - small)
connected to a suitable ground. Failure to heed this caution may result in
damage to the instrument.
When storing or in between handling of PCBs (Printed Circuit Boards), always
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place them in static control envelopes or enclosures.
52. Install the NPD detector PCB by sliding it into
its mounting location on the main PCB (at the
right side of the instrument). Installation of the
PCB will insert the interconnect into the thermal
strap. Use caution to avoid damaging the
spring at the end of the interconnect.
53. Tighten the screws on the clamps which secure
the interconnect to the thermal strap.
54. Remove the cap from the base of the detector weldment (inside the column oven).
55. Install the column and any other associated hardware removed in step 5 of this procedure.
56. Install the detector top cover, and all attached
components, on the thermal strap.
57. Use a Pozidriv screwdriver to secure the detec-
tor cover to the thermal strap with three screws.
58. Restore all gas supplies to the instrument and
check for leaks at all installed fittings.
59. If the system is leak free, install the left side
panel and secure using two screws.
60. If it was necessary to remove the rear panel,
install it and secure using four screws.
61. Install the right side panel and secure using four screws.
62. Install the electronics carrier top cover.
63. Install the hinged top cover and secure using a screw and washer.
64. Connect the ground strap to the hinged top cover using a screw.
65. Restore all gas supplies.
66. Restore power to the instrument.
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SVC 4- 47
CLAMPS
INTERCONNECT
COVER