Maintenance

Ground strap

J1 J3

FRONT

J2J4

Remove these screws to remove this board

Figure 6-12: Removing the Power Supply board

Removing the LNB Power

Supply Board

1.Unplug the interconnecting plug from the right side of the LNB power supply.

2.Remove the two Torx screws securing the circuit board to the rear panel. See Figure 6-13.

3.Remove the circuit board.

4.Replace the circuit board by reversing the procedure.

Remove these screws to remove LNB Power Supply board (A4) or to replace LNB LED.

333--3990--01

SPECTRUM MONITOR

WARNING

TO AVOID ELECTRICAL SHOCK, THE POWER CORD PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO EARTH GROUND.

0.70 MAX

50/60Hz

90 - 250V REPLACEWITH FUSE ONLY

250V 2A F TYPE

70MHz

INPUT

DIE IN DIESEM GERAT ENTSTEHENDE RONTGENSTRAHLUNG IST AUSREICHEND ABGESCHIRMT

BESCHLEUNIGUNGSSPANNUNG KLEINER ALS20kV

LNB POWER

ON

L-BAND

 

INPUT

LNB POWER

 

 

ON

 

OFF

 

+18VDC@250mA

Figure 6-13: Mounting screws for the LNB Power Supply circuit board, A4

6- 26

1705A Spectrum Monitor

Page 151
Image 151
Tektronix 1705A instruction manual Removing the LNB Power Supply Board, Front