4
Repair Guide
132
Keysight 8990B Service Guide
Check Source Board Module Disassembly
Use this procedure to disassemble the check source board module.
1
Detach the U-wave attenuator pad (0955-0462) on the check source board
assembly using the manual torque wrench (5/16”) with torque of 5 in-lbs as
shown in
Figure 4-49
Detach the U-wave attenuator pad
2
Unscrew the four screws (0515-0390) with the 18 in-lbs, T20 Torx screwdriver.
Detach the belt cover with the poron pad (08990-00110) as shown in
. Unscrew the four screws (0515-2007) with the
5 in-lbs, T8 Torx screwdriver and then remove the check source assembly
(08990-66004) from the PPMC assembly.
Содержание 8990B
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