Figure 4-68 Remove The Heat Spread - Keysight 8990B Service Manual

Connect the respective fan cable connector for channel 3 and 4 to J127, fan
NOTE
cable connector for channel 1 and 2 to J128, and another fan cable to J129 for
the reassembly process.
2 To remove and replace the heat spread (54904-01202), remove the six screws
Figure 4-68
Keysight 8990B Service Guide
(0515-1410) from the acquisition board standoff with the 5 in-lbs T10, Torx
screwdriver as shown in
Remove the heat spread
Figure 4-68.
Repair Guide 4
147