HP 8340B Manual page 358

Instrument Top and Bottom
11.
While holding W15 clear of A12J1 (top), pull the A8 casting
away from the instrument (bottom).
Swing the RF deck open.
|
CAUTION
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To
avoid crushing A20 components mounted near the RF deck
hinge, do
not open the RF
deck to more than
a
45° angle from
its
original position.
DISASSEMBLY PROCEDURES
Equipment Required
HP Part Number
Large Pozidriv
(2 PT)
...........................................
8710-0900
Small Pozidriv (1 PT)
...........................................
8710-0899
5/16 Wrench
..................................................
8720-0015
1/4
inch
Nut Driver (A8
&
A9 assemblies
only)
.......................
8720-0002
5/16 Special Wrench (A8 & A15
assemblies only)
...................
08555-20097
7/32 Wrench
(A15 assembly only)
.................................
8710-0534
Introduction
Two types of procedures follow:
1.
The assemblies that can be removed after disconnecting attached cables or wires and mounting
hardware.
2.
The assemblies that require that
you
open the hinged RF deck
to access either the
whole assem¬
bly or
part of the mounting
hardware.
NOTE:
Before you perform any of
the following
procedures, remove the top, bottom, and perforated
right-hand (as viewed from the front of the instrument) side covers; place the instrument on
its left
side.
A8 3.7 GHz Oscillator Replacement Procedure
Refer to Figure H-23 for related assemblies, cables, and mounting hardware locations.
1.
Remove W10 from the instrument. You may
have to place
a
special
5/16
inch slotted box end
wrench (see equipment required, above) on A15J2 to keep the A15 assembly from
turning
when
you
remove W10
from A15J1.
2.
Using
a
standard 5/16
inch
wrench, remove W10 from
A15J1.
3.
Remove W10 from the A9 assembly and set aside.
4 Remove W25 from A62J10
(item 1).
H-38
RF
Section Repair Procedures
HP 8340B/41B