Service manual

T- 7 1
5. IMAGE FAILURE
5-1. Image Failure Troubleshooting
• In this chapter, troubleshooting is divided into “initial checks” and “troubleshooting proce-
dures classified by image failures.”
• If any image failure has occurred, first make the initial checks, then proceed to the corre-
sponding image failure troubleshooting procedure.
5-2. Initial Checks
• Determine if the failure is attributable to a basic cause or causes.
• Determine if the failure is attributable to an input system (IR) or output system (engine)
fault.
Section Step Check Result Action
Installation
site
1 See “PRECAUTIONS FOR
INSTALLATION” in GENERAL.
NO Change the installation site.
Paper
2 Recommended paper is used. NO Instruct user.
3 Paper is damp. YES Change paper.
Instruct user in paper storage.
Original
4 Original not flat YES Correct.
5 Faint original YES Instruct user.
6 Highly transparent original
(OHP transparencies, etc.)
YES Instruct user.
7 Dirty or scratched Original
Glass
YES Clean or change.
PM parts
8 PM parts relating to image for-
mation have reached the end
of cleaning/replacement
cycles.
YES Clean or change.
(See Maintenance Schedule.)
Check Result Cause
Copy made at a reduced
ratio.
Input
system
Output
system
1177T03YA
1177T04YA
1177T05YA