Maintenance
6-26 1705A Spectrum Monitor
FRONT
J1 J3
J2 J4
Groundstrap
Removet hese screws to remove this board
Figure6 -12: Removing the Power Supply board
1. Unplug the interconnectingplug from the right side of the LNB power
supply.
2. Remove the two Torxscrews securing the circuit board to the rear panel.
See Figure 6-13.
3. Remove the circuit board.
4. Replace thecircuit board by reversing the procedure.
BESCHLEUNIGUNGSSPANNUNGKLEINER ALS20kV
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
ON
WARNING
0.70MAX
50/60Hz
90-250V REPLACEFUSEONLY
WITH
250V2AFTYPE
333--3990--01
Removethese screws to remove
LNBPower Supply board (A4) or to
replaceLNB LED.
Figure6 -13: Mounting screws for the LNB Power Supply circuit board, A4
Removing the LNB PowerSupplyB oard