Toshiba Strata DK40 Installation & Maintenance Manual page 338

Fault Finding
.
Figure 9-1
Five symbols are used in the flowcharts, which are identified in
The flowcharts are sequentially arranged to permit rapid fault localisation within the system.
All fault clearing must begin with the Fault Classification Flowchart, which is arranged in the
correct fault locating sequence.
CAUTION!
Important!
9-2
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
Marking points of a
flowchart sequence.
Important notes affecting the
fault clearing procedure.
Question to be answered
YES or NO.
Progression TO or FROM another
flowchart location. Letters and
numbers denote the exact
entrance or exit points.
Statement of a required action.
Flowchart Symbols
When handling PCBs, do not:
Drop a PCB.
Stack one PCB on top of another.
Handle a PCB without discharging any static electricity from your person
by touching the grounded cabinet.
Touch the PCB contacts with your fingers.
If the fault is not cleared by substituting a PCB, reinstall the original PCB in
the KSU/cabinet before trying another PCB.
Fault Clearing Procedures
1887
Figure 9-1.
Strata DK40 I&M Spring 1999