Maintenance
6-22 1705A Spectrum Monitor
BESCHLEUNIGUNGSSPANNUNGKLEINER ALS
20kV
DIEINDI ESEM GERAT ENTSTEHENDE
RONTGENSTRAHLUNGIST AUSREICHEND ABGESCHI RMT
TOAVOIDELECTRICAL SHOCK , THE POWER
CORDPROTECTIVEG ROUNDING CONDUCTOR
MUSTBECONNECTED TO EARTH GROUND.
SPECTRUMMONITOR
70MHz
INPUT
L-BAND
INPUT
LNBPOWER
LNBPOWER
ON
OFF
+18VDC@250mA
Removethese five (5)
screwsto r emove the
rearpanel.
Securedby removeable
nutsinside the panel.
ON
WARNING
0.70MAX
50/60Hz
90-250V REPLACEFUSEONLY
WITH
250V2AFTYPE
333--3990--01
Figure6 -9: Screws securing the rear panel
1. Remove the five rear screws. See Figure 6-9. Screws securing the power
receptical use removeable nuts as fasteners i nside the rear panel.
2. Unsolder the bncand ground connections. (If 1700F10 Field Upgrade is
installed, unsolder leads fromthe battery connector.)
3. Unsolder the two leadsto the +18 V switch.
4. Remove the hex nut on the L--BANDINPUT connector.
5. Pull the rearpanel free from the chassis, be careful not to pull the unsoldered
wires.
6. Torep lace, reverse the procedure.
1. Remove the blue multiwire connectorfrom J154.
2. Remove the two screws holding the board in pl ace. See Fig ure 6-10 for
location.
Removal of the Rear PanelRemoval of Front- PanelAssembly