Maintenance; Introduction; Required Performance Test Equipment; Repair Precautions - Fluke 9000A-006 Service Manual

INTRODUCTION

This section provides maintenance information for the Asynchronous Signature Module
and includes a performance test, repair precautions, disassembly procedures, and
troubleshooting information.

REQUIRED PERFORMANCE TEST EQUIPMENT

The equipment required for the performance test and troubleshooting procedures
contained in this section are listed in Table 3-1.
EQUIPMENT TYPE
Microsystem Troubleshooter with
Signature Option
Oscilloscope
Multimeter
40-Pin DIP Test Clip
Patch Cable, Micrograbber

REPAIR PRECAUTIONS

SMD Considerations

The Asynchronous Signature Module employs SMD (surface mount device) tech- nology
for mounting the components on the printed circuit board. The use of surface mount
devices prevents the use of conventional desoldering and soldering techniques during
repair operations. The removal and installation of surface mount devices requires the
correct use of a heat gun and fluxing techniques. Do not attempt printed circuit board
repair unless you are skilled in SMD repair techniques.

MOS Considerations

Static discharge can damage MOS components contained on the
module. To prevent this possibility, take the following precautions
when troubleshooting and/or repairing the module.
Required Test Equipment
TABLE 3-1.
Fluke 9010A with 006 option
Tektronix 7904
Fluke 8050A
CAUTION
Section 3

Maintenance

RECOMMENDED EQUIPMENT
9000A-006 Service
3-1.
3-2.
3-3.
3-4.
3-5.
3-1