Page 79 - Making Instruction Work

chap 6 3/4/97 4:14 PM Page 67

task analysis 67

Example #1: This flowchart depicts the main actions fol-
lowed by someone troubleshooting equipment at the cus-
tomer’s location.

Figure 6.3 On-Site Troubleshooting

When initiated? Malfunction report received.

Receive
Malfunction
Report
On-Site Troubleshooting
Key: TS = troubleshooting
Interpret PM = preventive maintenance
Malfunction
Report
Locate
Equipment
Op-Induced YES
Trouble?
Clear
Interview NO Trouble
Operator
Try
Quick Fixes Instruct
Verify
YES
Symptoms Operator
A
Trouble YES
Cleared?
NO
PM YES
TS Needed?
Aids YES
Available? Perform
NO Preventive
Maintenance
NO Use TS Aids
Perform
Split-Half Search
Make
Final Checks
Have
NO Good Idea
(Hypothesis)? Complete
Paperwork
YES
Test Hypothesis
(Try Solution) Clean and
Check Area
NO Trouble Inform/Instruct
Cleared? TO Client
A
YES
Done
When terminated? Equipment functions according to
specifications.