Tektronix LTA7P Series, Service Manual

Page: 135 / 172

TLA7Nx, TLA7Px, & TLA7Qx Logic Analyzer Module Service Manual
6- 27
Troubleshooting
WARNING.
Before performing this or any other procedure in this manual, read
the General Safety Summary and Service Safety Summary found at the
beginning of this manual. Also, to prevent possible injury or damage to
electrical components, read
Preventing Electrostatic Discharge on page 6--1.
This section contains information and procedures designed to help isolate faults
to within the TLA7Nx, TLA7Px or TLA7Qx logic analyzer module. The process
is as follows:
1. Review Check for Common Problems , beginning on page 6--28, to eliminate
easy to find problems.
2. Perform procedures outlined in Eliminate Other Problem Sources , beginning
on page 6--30, to eliminate the mainframe, probes, and other modules as the
source of the fault(s).
3. Perform the Troubleshoot the Logic Analyzer Module procedure, beginning
on page 6--31, to identify the failed replaceable part within the module.
If you replace a faulty circuit board or assembly found using these procedures,
you must follow any verification and adjustment procedures identified in
Table 6--8 on page 6--38 for the replaced board.
Service Level
This section supports isolation of faults within the logic analyzer module to the
replaceable-part level that’s reflected in the replaceable parts lists, which begin
on page 10--2. In most cases, faults are isolated to circuit boards or assemblies,
but not to individual components on those boards. (See
Strategy for Servicing on
page xv.)
Fault isolation is supported to the following circuit boards and replaceable parts:
H
LPU board
H
Acquisition board
H
Daughter boards
H
Power supply fuses
H
Interconnect cables