Fluke 9640A Series, Instruction Manual

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Maintenance
Disassembly and Reassembly
7
7-9
1P 2W Coaxial Relay
Use the following procedure to remove the 1P 2W Coaxial Relay. Two panhead screws
hold the Relay in place.
1.
Remove the top cover from the Instrument.
2. Remove the shield from the Instrument.
3. The relay is located on the lefthand side panel in front of the fans.
4. Starting from the front, disconnect the first of three SMA connectors using an 8 mm
spanner. Note these connectors are torque tightened (1 Nm); do not attempt to tighten
them before releasing these connectors.
5. Disconnect the 2 pin Molex connector from the RF module.
6. Remove the two panhead screws securing it to the side panel block, and lift out.
A6 Front Panel Assembly
The A6 Front Panel Assembly includes the Bezel Assembly, the Display and Keypad
PCAs, and the RF Output and Control connectors. See Figure 7-3.
Use the following procedure to remove the A6 Front Panel Assembly.
1.
Undo the nut securing the RF Output connector to the front panel using an 8 mm
spanner.
2. Undo the nut securing the Control cable connector to the front panel.
3. Remove the upper and lower screws on the side of the front panel handles.
4. Gently ease the A6 Front Panel Assembly forward using the handles, as there are
connectors still attached behind the panel. This will disengage the two connectors on
the front panel.
5. When the front panel is forward sufficiently, disconnect the IDE cable (right-hand
side) from the A3 Digital PCA. Do not pull on the cable, but ease it out using the
location lug on the connector.
6. Carefully remove the display cable (flexible PCB) from the A3 Digital PCA as
follows:
a.
Using your finger nails lift the cable-locking lever (located underneath the
connector) to the up position.
b. Carefully remove the flex PCB from its housing by gently pulling.
7. Withdraw the A6 Front Panel Assembly making sure the RF Output and Control
connectors disengage from the panel.