Vco Pca, A2A2; Output Pca, A2A4; Display Pca, A L; Att Enuatorjrpp Pca A2A5 - Fluke 6060B Instruction Manual

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40-6.

VCO PCA, A2A2

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The VCO assembly comes with its associated VCO Calibration EPROM. This EPROM
replaces the old one installed on the Controller PCB, A2A 7. After installing the new VCO
assembly, the FM CAL and VCO CLAMP adjustments should be done. These
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adjustments are presented under the Synthesizer Adjustment Procedure.
A plug-in coupling capacitor is used to interconMct the VCO and Output PCBs, thus
eliminating the need for a soldering iron when replacing this assembly.
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40-7.

Output PCA, A2A4

The Output assembly comes with its associated Output Calibration EPROM. This
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EPROM replaces the old one installed on the Controller PCB. After installing the new
Output assembly, perform the level DAC offset, the RF Level, the HET level, and the FM
CAL adjustment procedures given in the Calibration Adjustment Section of this manual.
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A plug-in coupling capacitor is used to interconnect the VCO and Output PCBs,
eliminating the need for a soldering iron when replacing this assembly .
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If the Generator is equipped with the Low-Rate FM option, then it is necessary to add a
jumper around C401 and C402 on the new Output assembly before installing it.
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40-8. Controller PCA, A2A7
The Controller assembly comes without the three calibration EPROMs. Therefore, it is
necessary to move these EPROMs from the old to the new Controller. Remember to set
the option status switch. No adjustments are required.
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40-9. Display PCA, A1A1
After installing a new Display PCA, the Modulation Indicator adjustment should be
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done. The pro.cedure is presented under the Display Adjustment Procedure.
40-10. Attenuator/RPP PCA, A2A5
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The Attenuator/RPP PCA comes complete with the housing, Relay Driver PCA and
matching Attenuator Calibration EPROM, and comes ready to install. The matching
EPROM replaces the Attenuator calibration EPROM on the Controller PCA. After the
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new Attenuator assembly is installed, perform the RF Level Adjustment procedure on
the A2A4 Output PCA in the Calibration Adjustments section of this manual.
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40-1 1 .

IEEE-488 PCA, A3A3

The IEEE-488 assembly comes complete with panel, frame, and connector and is ready to
plug in. No adjustments are required after installation.
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40-12.

Non-Volatile Memory PCA, A2A8

The Non-Volatile Memory assembly comes ready to plug in, and requires no adjustment
after installation.
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40·13.

PARTS REPLACEMENT

An experienced technician should be able to isolate the defective component and replace
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it after reading the information presented in Section 3, the Theory of Operation and the
troubleshooting information contained in this section. The Schematics are presented in
Section 8 (Section 6 for the options) of this manual.
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Most parts are replaced using ordinary methods. The parts requiring special attention are
the chip components located on the A2A2 VCO PCA. The chip components should be
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MAINTENANCE
TROUBLESHOOTING AND REPAIR
40-3