Chapter 7 303
Replacing Major Assemblies
A2 Display
A2 Display
This procedure applies to:
8590 E-Series and L-Series spectrum analyzers
8591C cable TV analyzers
8594Q QAM analyzers
CAUTION Use ESD precautions when performing this replacement procedure.
Removal
1. Remove the instrument cover assembly. Refer to the “Instrument
Cover.” removal procedure.
2. Remove the A17 Memory Card Reader. Refer to the “A17 Memory
Card Reader Assembly.” removal procedure.
3. Remove the A1 Front-Frame assembly. Refer to the “A1 Front-Frame
Assembly.” removal procedure.
4. Place the instrument on the work surface with the bottom side
facing up.
5. Remove the three screws (1) that secure the A2 Display to the
chassis. See Figure 7-2.
6. Disconnect the W2 wire harness (2) from A16J8 on the A16
Processor/Video Board assembly.
7. Place the instrument on its right side.
8. Disconnect the W51 wire harness from the power supply and, on
8592L and 8593E spectrum analyzers, from the A7 Analog Control
assembly.
CAUTION The plastic locking clip on the W3 connector (3) is fragile. Protect the
connector by wrapping it with a piece of tape before pushing it down
into the slot (4) on the instrument chassis.
9. Push the W2 wire harness (2) and the W3 wire harness (3) down
into the slot (4) on the instrument chassis.
10.Hold the display in position and remove the two screws (5) that
secure the display to the left side of the instrument chassis.
CAUTION A corner of the A8 Power Supply partially blocks the slot (4) in the
instrument chassis. Make sure that the display's wiring harness and
connectors do not jam between the power supply and the chassis.
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