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Replacing A Detector Pcb; Remove/replace Detector Pcb - HP 5890 SERIES II Service Manual

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REPLACING A DETECTOR PCB

Remove/Replace Detector PCB

HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE
`
POWER CORD IS CONNECTED. AVOID A POTENTIALLY DANGEROUS SHOCK
HAZARD BY DISCONNECTING THE POWER CORD BEFORE WORKING ON THE
INSTRUMENT.
FLAME IONIZATION (FID), NITROGEN PHOSPHOROUS (NPD), AND FLAME
`
PHOTOMETRIC (FPD) DETECTORS USE HYDROGEN GAS AS FUEL. BE SURE
ALL HYDROGEN GAS IS TURNED OFF AT ITS SOURCE BEFORE REPLACING
ANY FLOW COMPONENTS.
1. Set the main power line switch to the off position.
2. Disconnect the power cable from its receptacle.
3. Turn off all gas supplies.
4. Lift the hinged top cover at its front edge,
exposing the detector area.
5. Remove the electronics carrier top cover.
6. Remove the right side panel by
removing four screws: two each
along its top and bottom edges.
ELECTRONICS
CARRIER TOP
COVER
7. Lift the hinged top cover at its front edge, exposing the detector area. (If an FPD detector is
installed, it will be necessary to remove the FPD cover by removing the thumbscrew securing it
to the hinged top cover.)
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com
SCREWS
SCREWS
RIGHT SIDE PANEL
SVC 4- 87
RED O VISIBLE
OFF
ON

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