Disassembly Procedure; Location Of Asynchronous Signature Module - Fluke 9000A-006 Service Manual

9000A-006 Service
• Perform all repairs at a static-free work station.
• Do not handle the contact points of the SMDs.
• Attach grounding straps to repair personnel.
• Remove all plastic, vinyl, and styrofoam from the work area.

DISASSEMBLY PROCEDURE

The Asynchronous Signature Module is located within the Troubleshooter case. Gain
access to and remove the module as follows:
1. Invert the instrument on a clean surface, and remove the seven retaining screws
2. Carefully return the instrument to the upright position while holding the top cover
3. If it is necessary to remove the module from the base assembly of the Trouble-
3-2
from the bottom side.
in place. Once the instrument is in the upright position, remove the top cover and
lay it to the right side of the instrument, exposing the Signature Module as shown
in Figure 3-1.
shooter, proceed as follows:
a. Remove the three screws that secure the Signature Module PCB assembly
within the Troubleshooter.
b. Lift out the module and disconnect the four ribbon cables that extend from the
module to the main assembly of the Troubleshooter.
FIGURE 3-1. Location of Asynchronous Signature Module
3-6.