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Assembly Replacement
Procedure 2. A1 Front Frame/A18 LCD
Procedure 2. A1 Front Frame/A18 LCD
Removal of the Front Frame
1. Remove the spectrum analyzer cover assembly as described in
"Procedure 1. Spectrum Analyzer Cover." Place the instrument on
its side, with the display section upper-most, as shown in
on page
179.
2. Fold out the A2, A3, A4, and A5 assemblies as described in steps 2
through 6 under
"Procedure 5. A2, A3, A4, and A5 Assemblies."
Facing the front panel, the A2, A3, A4, and A5 assemblies will lay to
your left.
3. Fold out the A14 and A15 assemblies as described in steps 3 through
4 under
"Procedure
panel, the A14 and A15 assemblies will lay to your right.
4. Disconnect ribbon cable A1A1W1, which connects HDR1 on the A1
front frame assembly and A3J602 on the A3 interface board.
5. Disconnect the following cables from the A2 controller board:
a. Ribbon cable W60, which connects J8 on the A2 controller board
with J1 on the A17 display driver board.
b. W61, which connects J9 on the A2 controller board with J7 on the
A17 display driver board.
6. Disconnect ribbon cable W64 from the J1 VGA port on the rear panel
(do not disconnect W64 from the A17 display driver board).
7. Disconnect the W3 line switch cable from the power supply.
a. Remove the power supply cover. Use a T-6 TORX driver to remove
the 3 screws (0515-2309) that secure the power supply cover to
the power supply.
b. Remove the line switch connector from A6J2 on the power supply.
c. Loosen FL 1. Remove the two screws (0515-2332) which are used
to secure FL 1 to the right side of the chassis.
d. After FL 1 has been loosened, route the W3 line switch cable
through the opening behind FL 1, from the left to the right side of
the instrument (if you still have difficulty routing W3 through the
opening, use an open ended 5/16-inch wrench to further loosen, or
disconnect FL 1).
To disconnect the line switch from the front panel, see
the Front Frame" on page
180
8
. A14 and A15 Assemblies."
180.
Figure 4-1
Facing the front
"Removal of
Chapter 4
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