Filter
Top Products
Assembly Replacement ESG Family Signal Generators
B2 Large Fan
5-54 Service Guide
B2 Large Fan
Tools Required
• 1/4-inch open-end wrench
• Modified T-10 TORX bit (part number 8710-1637)
Bit Modification. The hexagonal head at the end of the TORX bit must be removed so
that the total length of the bit is approximately 1.5 inches (see Figure 5-33). A
hexagonal portion of the bit will remain for use with a wrench. The shortened bit will
now fit between the fan assembly and the front panel assembly.
Figure 5-33 Modified Bit
Removal
NOTE It is best to attempt this procedure without removing the front panel
assembly. If the front panel assembly is removed, you will be required to
perform time-consuming “Power Level Accuracy” verification tests and
adjustments.
1. Remove the instrument cover. (Refer to the “Instrument Cover” replacement procedure
on page 5-64.)
2. Disconnect B2W1 from the CPU/motherboard (A14). (See Figure 5-34.)
3. Remove the four screws (item 1) that attach the fan assembly (B2) to the instrument
chassis.
4. Remove the fan assembly.
Replacement
1. Reverse the removal procedure and torque the T-10 TORX screws to 9 in-lbs.