Gestetner A193 Service Manual page 814

5. TROUBLESHOOTING
General Information
To solve a problem, you need to classify the cause of the problem into one of
the following groups.
1. Operation
a. Machine setting error
b. User application setting error
2. Hardware
a. Hardware error in the machine
b. Hardware error in the controller (or the related options).
3. Software
a. Controller (or printer enhancement unit) bug
b. Printer driver bug
c. Application software bug
4. Operating Condition
a. Environment (power supply, temperature, humidity, dust,
electrical noise, etc.)
b. Supplies (e.g. paper)
You need to get the following information before troubleshooting each case.
1-a Test page and print sample
1-b. Application settings and print sample
2. Error code
3. Print sample and occurrence conditions
4. Operating conditions
SM 1-25 (A643)