Troubleshooting Image Quality Problems; Initial Check Items - Minolta CF2002 Service Manual

4-2.

Troubleshooting Image Quality Problems

• This chapter is divided into two parts: "Initial Check Items" and "Troubleshooting Proce-
dure by a Particular Image Quality Problem."
• When an image quality problem occurs, first go through the "Initial Check Items" and, if
the cause is yet to be identified, go to "Troubleshooting Procedure by a Particular Image
Quality Problem."
4-3.

Initial Check Items

1. Check first to see if image data is properly transmitted between IR and memory, and
between memory and printer.
Enter the Tech. Rep. Mode, select "Machine Adjust"
"Memory/Hard Disk Adjust"
and select and carry out "IR
→
ory PRT" checks.
2. Let the copier produce a test print and determine whether the image problem is attribut-
able to the IR or printer system.
• Evaluation Procedure
Image Problem
From "Tech. Rep. Mode," select "Test
Print"
GLE"
Lines, bands
→
"C M
and produce a test print. Is image
problem evident?
Action
→
"Memory Bus Check,"
→
Memory" and "Mem-
Action
→ →
"Halftone Pattern"
→ →
"HYPER" "Gradation"
→ → →
Y Bk" "Density 64,"
T-73
Result
→
OK Initial check item (2)
NG
(action as instructed)
Result Cause
YES Printer
"SIN-
→
NO IR
Next Step
T- 58, 59
 
4025T575CA
Next Step
Initial check
item (3)
T-75