Kodak DryView 8300 Service Bulletins page 132

SERVICE BULLETIN
Health Imaging Products
Eastman Kodak Company, Health Imaging, Rochester, NY 14650
SERVICE BULLETIN NO. 42 MAY 2003
1439 Kodak DryView 8610 LASER IMAGING SYSTEM
Artifacts Caused by MOTOR CONTROL BOARD
Purpose
The purpose of this Service Bulletin is to communicate the many ways that a defective MOTOR
CONTROL PWA can cause image artifacts on the Kodak DryView 8610 LASER IMAGING
SYSTEM only. There is no other circuit board that can produce such a wide range of symptoms,
which usually leads the Field Engineer to incorrectly replace the OPTICS MODULE or the CPU
PWA.
The MOTOR CONTROL PWA is not a problem in the Kodak DryView 8600 LASER IMAGING
SYSTEM or in the Kodak DryView 8300 LASER IMAGING SYSTEM.
Problem
Most of the symptoms are horizontal artifacts, which means they occur when the film is passing the
laser beam to accomplish the Y-axis scanning. Y-axis artifacts are never caused by the OPTICS
MODULE in 8 inch x 10 inch systems, but are due to film movement. Film movement is the job of
the CAPSTAN MOTOR and the MOTOR CONTROL PWA.
However, a defective MOTOR CONTROL BOARD may also cause a faded image artifact. The
following images show examples of the types of artifacts that can be caused by a defective MOTOR
CONTROL BOARD.
Eastman Kodak Company, 2003 Pub No. 8E9185