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9640A
Instruction Manual
A1 Synthesizer PCA
The A1 Synthesizer PCA is located beneath the A2 RF Output PCA. Four panhead
screws secure this assembly to the Instrument. See Figure 7-5.
Use the following procedure to remove the A1 Synthesizer PCA:
1. Remove the top cover from the Instrument.
2. Remove the shield from the Instrument.
3. Remove the A2 RF Output PCA from the Instrument.
4.
5. Disconnect the 10-pin Molex connector at the rear of the PCA.
6. Disconnect the seven MCX connectors at the front of the PCA by gently pulling and
7. Disconnect the 60–pin IDE cable using the ejectors.
8. Remove the four panhead screws from the A1 Synthesizer PCA. Pull the PCA
A1 Synthesizer PCA
7-12
Disconnect the four SMB connectors by pulling firmly upwards by the body of the
connector. Each connector is colour coded. Note the location of each cable for re-
assembly.
setting to one side. Each signal path is labeled "A-A" etc. on the top screens of the
RF Output and Synthesizer PCAs. Note the location of each cable for re-assembly.
forward and lift it from the chassis.
Figure 7-5. Removing the A1 Synthesizer PCA
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