A20 Digital Motherboard Replacement; Tools Required; Removal Procedure; Replacement Procedure - Agilent Technologies ENA Series Service Manual

Replacement Procedure

A20 Digital Motherboard Replacement

A20 Digital Motherboard Replacement

Tools Required

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Removal Procedure

Refer to Figure 6-8 for this procedure.
Step 1. Remove the mouse, the external keyboard and the parallel printer cable if they are
connected to the rear panel.
Step 2. Remove the outer cover as described in "Outer Cover Removal" on page 166.
Step 3. Remove the following assemblies.
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Step 4. Disconnect the following cables.
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NOTE The mylar cable (item 5) and its connector are very fragile. It's recommended to replace
the mylar cable when the cable is disconnected and connected frequently.
Step 5. Remove six TORX T10 screws (item 7) fastening the digital motherboard.
Step 6. Lift the digital motherboard.
Replacement Procedure
Step 1. Reverse the order of the removal procedure.
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TORX screwdriver, T10, T15, and T20
A25 Handler I/O board (refer to "A25 Handler I/O Board Replacement" on page 175.)
A21 PCI DSP CARD/A24 GPIB Card assembly (refer to "A21 PCI DSP Card / A24
GPIB Card Replacement" on page 185.)
Connected to the Front Panel (touch screen, opt. 016) (item 1)
Connected to the A32 USB connector (item 2)
Connected to the A10 Analog Mother Board (item 3).
Connected to the A28 FDD (item 4).
Connected to the A27 HDD (item 6)
Connected to the Front Panel (display) (item 5)
Chapter 6