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A4 Source Assembly Replacement
he source board comes in two di erent versions. One is for HP 8711C/12C/30A analyzers, and
the other is for HP 8713C/4C analyzers. Make sure the proper board is ordered.
How to emove the Source Assembly
1. Disconnect the power cord.
2. Remove the backplane cover by unscrewing the two hold-down screws and sliding the cover
o .
3. Remove the rear panel screw (SCREW 9 as indicated on the rear-panel label) located to the
right of the XA4J1 connector.
4. Remove the front panel assembly (see \How to Remove the Front Panel Assembly").
Remove the handle nut plate on the right side only.
5. Disconnect the four cables from the front of the source assembly. See Figure 3-5.
Caution
Be very careful when reconnecting the semi-rigid cables (items numbered
1 and 4 in able 7-1 and able 7-2 in the \Parts List" chapter). hey are not
interchangeable. Ensure that one cable is not confused with the other. It
is possible to force the wrong cable onto the wrong connector, resulting in
damage to the connectors/cables. ighten to 10 lb-ins of torque.
6. Grasp the handle tab and pull forward to release the assembly. Once released, the assembly
will easily slide out of its cavity.
Note
Insure that SCREW 9 is re-installed and secure when you have completed
reassembling the analyzer.
Insert artwork here.
Figure 3-5. Removing the A4 Source Assembly
Assembly Replacement
3-9
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