Main Pca Unit Parts - Fluke 199B Service Manual

Fluke 19xB-19xC-2x5C
Service Manual

3.4 Main PCA Unit Parts

See Table 3-2 and Figure 3-2 for the main PCA Unit parts.
Item
1
2
3
4
5
6
7
8
9
10
The Scope channel A and B input attenuator top shieldings are provided with a
plate spring. The spring end is provided with heat conducting tape; it contacts
the C-ASIC's N1000 and N1200, and transports the heat from the C-ASIC to the
shielding.
Do not bend the springs, keep the tape on the spring end free of dust, and put the
shielding on the correct position.
3-6
Table 3-2. Main PCA Unit Parts
Description
Shielding box assy (includes rubber spacer, see fig. 8-5)
Insulation foil
PT-Screw K35x8
Input connector unit
Sealing ring for power connector
Input attenuator shielding:
- METER channel top
- METER channel bottom
- SCOPE channel A top
- SCOPE channel B top
- SCOPE channel A&B bottom
Screw Torx M3x20
Shielding cover
Combi-screw Torx M3x10 (screw + split spring)
Hexagonal spacer M3x16.5
Note
Ordering Code
1665767
1285961
1284975
1285977
1286052
1285989
1285992
1286007
1286018
1286029
1285101
1286034
1285046
1285199