Tektronix RTX130B, Service Manual

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Removal and Installation Procedures
4-24
RTX130B QAM & VSB RF Signal Generator Service Manual
3. Remove the CPU board: See Figure 4-10 on page 4-22.
a. Disconnect these cables:
H
The cable from the hard disk drive at CN1.
H
The cable from the Printer connector at CN3.
H
The cable from the A20 PCI Backplane board at CN5, CN6, CN9,
and CN14.
H
The cable from the Front-Panel Processor board at CN7.
b. Use a screwdriver with a T-10 Torx tip to remove the two screws
securing the board bracket to the chassis. See Figure 4-10 on page 4-22.
c. Grasp the board and slide it out.
4. Reinstallation : Perform step 3 in reverse order to reinstall the CPU board.
1.
Assemble equipment and locate module to be removed:
a.
You need a screwdriver with a T-10 Torx tip.
b. Locate the A20 PCI Backplane board in the locator diagram
Board
modules , Figure 4-3, page 4-12.
2.
Orient the instrument: Set the RTX130B so its bottom is down on the work
surface and its right side is facing you.
3. Remove the A20 PCI Backplane board: See Figure 4-10 on page 4-22.
a. Remove the A180 QAM Modulator board as described on page 4-23.
b.
Remove the A12 Main board as described on page 4-23.
c. Remove the CPU board as described on page 4-23.
d.
Disconnect these cables:
H
The cable from the A40 AC Distributor board at J220.
H
The cable from the 12 V main power supply at J160 and J170.
H
The cable from the external fan at J190.
H
The cable from the internal fan at J180.
H
The cables from the Front-Panel Processor board at J240.
H
The cable from the hard disk drive.
A20 PCI Backplane Board