HP 54501A - Removal and Replacement of

HP 54501A SERVICE
6-26
When
installing CRT,
make
certain
that
CRT yoke is properly
aligned . THE
GROUND BRACKET MUST BE INSTALLED BEFORE
THE CRT .
11 . To install CRT Monitor Assembly, reverse this
procedure .
After
replacement of CRT Monitor Assembly, only if necessary,
perform the
CRT
adjustmentprocedures detailed in section 4 of this manual
.
6-23 .
Removal and Replacement of Fan
1 .

Disconnect power cable .
2 .

Remove the six
screws from top and the two screws fromeach
side of instrument .
3 .

Lift
off
top
cover .
4 .

Remove rear panel from instrument cabinet
. Refer to Removal and
Installation
of
Rear
Panel Assembly,
if necessary .
5 .

Detach line
filter cable, W8, from power supply .
6 .

Detach
fan cable, B1 W1, from System
Board Assembly .
7 .

Remove fan by
removing the four screws securing it to cabinet
.
8 . To
install fan, reverse this procedure .
When replacing fan, be sure fan label is to outside
of instrument to assure
fan cable is directed toward center of rear panel
for connection to System
Assembly Board .
6-24 . Removal and
Replacement of Feet/Tilt Stand
NOTE
NOTE
NOTE
1 .

Remove System
Board Assembly . Refer to Removal and
Installation of System Board
Assembly, if necessary
.
2 .

Remove the three
#10 TORXe
screws
securing each foot/tilt stand to the
bottom of the
cabinet
.
3 .

To
install feet/tilt stand, reverse this procedure .