Replaceable Parts; Repair Philosophy - HP 9800 Handbook

98750 Replacement Parts 8-1
Chapter
8
Replaceable Parts
Repair Philosophy
Most 98750A repairs are done by replacing the faulty assembly. The old assembly is returned
for repair in some cases (exchange program) and is thrown away in others. In a few cases, a
faulty assembly can be repaired to the component level either on-site or at the local field office.
This procedure is recommended only when replaceable components are not soldered in or
when the probability of inducing further damage in the course of doing the repair is minimal. All
components which may be replaced by the CE are listed as level 2 parts under the assembly
part number in the parts lists. Other failures should be repaired at the assembly level. All
exchange parts are noted as such in the parts lists.
Table 1: Replaceable Parts List
Assembly
Reference
CD
HP
TQ
Description
Level
Designator Part No.
1
6 0960-0480 1
TripIer
I
4
0':11;45-26576 2 CRT Interface PC board
1
4 09845-61671 1 Intensity Control Cable
1
5 09845-61672 1 Tube Socket Cable
1
A71 3 0984566571 1 Motherboard
1
A72 4
09845-66572
1 Power Transistor Assy
2 Q4
5
1826-0169
1
Voltage Regulator - LM320K-15
2 Ql H 1826-0203 I Voltage Regulator - 7815KC
2 Q2.3 H 1853-0305
2
TranSistor - 2N5875
2
Q6 7 18540518 1 Transistor·2N5877
2
Q5 8 1854-0783 1
Transistor - 2N6583
1 A73 5 09845-66573 1 Display Logic Assy. - New
1 09845-69573 Display Logic Assy - Exchange
1
A74 6
09845-66574
1
CRT Analog Assy - New
2 09845-69574
CRT Analog Assy
~ Exchange
1 A75 7 09H45-66575 1 High Voltage Assy - New
3
09H45-69575 High Voltage Assy
Exchange
1
A77
9 09845-66577 1 Graphics Scanner Assy - New
5 09845-6% 77
Graphics Scanner Assy - Exchange
1
A79
1
09845-66579
1 Graphics Control Assy - New
7 09845-6%79
GraphiCS Control Assy - Exchange
1 0 09845-67972 1 CRT Yoke Assy
I