Model 8663A
CI-IANGES
:
Z342A lo 2846A
On the A7A3 schematic:
l A7A3 - Modify the schematic ee &wn in the partial echmnatic UP/O Figu~
m, A7A.3 Power Supply Inverter, Motherboard & Liie Filter Schematic
(2342A to 2846AY on pa@ @-908.5
25lOA to 2846A
On the A7A3 schematic:
l A7A3 ~ Modify the schematic es shown in the partial schmnatic “P/O Figul
B-908, A7A3 Power Supply Inverter, Motherboard & Line Filter Schematic
(25lOA to 2646A)” on page 6-906.6
Z545A and daave
On the A7A4 %chematic:
l
08662-60376
- Chmge the part mmber of the A7A4 Assembly to
08662-60376.
NOTE
If replacing the oLd
A7A4
power e&y motherboard with the new
board (08662-60X%), extreme care ehou,W be
ezmcised aa the
connection we armnged in o diferent o&r on the 08662-60376
board. For information regarding instolling o new
A7A4 Assembly
~08662-60376)
in an okkr instrument,
refer
w
Inatdation htructinm
on page 8408.1 - HP Part number 08662-90069. The wiring codes and
board labels shown on the
eckmntic
are cm&.
265lA and above
On the A7Al schematic:
l
08662-60347
- Change the part number of the A7Al Assembly to
08662~60347.
l
Q4,
Q6, Q8 - Change the part number of Q4, Q6, and Q8 to 18E4-0330 in tl
“Table of Tramistor and Integrated Circuit Pact Numbers.”
2846A and below
On the schematic:
l fl- This aeeembly is not individually backwarda compatible except ae a
total kit - the Fan Replacement Kit in available ea HP part number
08662-60363.
If your rear panel frame ie damaged and your fan neede to be replaced, ordl
the F&ar Panel Kit, HP part number 06662-60364. See section 7 for furtbez
information,
revSOJUN89 a-908.3
Y
Service
