Konica Minolta 0902, Service Manual

Page: 131 / 302

Chapter 5 Disassembly and Assembly
5-11
5.2.5 Removing/Installing the Optical Unit
This section describes the instructions on how to remove and install the optical unit.
Requirements
Shown below is the tool requiring to be prepared in addition to the standard tools before performing the
works in this section.
Positions of the Setscrews on the Optical Unit
The optical unit is secured to the holding plate unit assembly on the subscan unit with 6 screws.
Remove 2 setscrews on the second front side after moving the optical unit to the second front side.
Remove a total of 4 setscrews on the first and second front sides after moving the optical unit to the
second front back side.
Removal Procedures
Work outline
Listed below are the number of people and the rough standard of work hours required for performing the
works described in this section.
1
See " Removal Procedures (Page 5-6)" in "5.2.3 Removing/Installing the Exterior Panel and
Insertion Unit" to remove the exterior panel and insertion unit.
2
Move the optical unit to the second front side.
Caution
•
Be sure to turn off the power supply circuit breaker and unplug the power cable from the
equipment whenever you disassemble/assemble the equipment.
•
Be careful when handling the optical unit not to send a shock wave to it, that is composed
of precision parts.
No. Tool
1 Vinyl sheet (used for covering the light condensing unit
to screen out dust on it)
Personnel
Number
Work Hours (steps 2 to 12)
1
Second Front Side Second Front Back Side
Second Front Side