Operation; Scan/Exposure Lamp Control - Konica Minolta bizhub 500 Service Manual

6. SCANNER SECTION
6.3

Operation

6.3.1

Scan/exposure lamp control

A. Operation when the power is turned ON
A specified period of time after the power switch (SW2) is turned on, the exposure unit conducts the home posi-
tion search. At this time, the exposure unit conducts the shading correction based on the white reference board
attached to the original glass. For shading correction, 2 places on the white reference board are read for correc-
tion. The home position search varies according to the ON/OFF condition of the scanner home sensor (PS30)
when SW2 is turned ON.
(1) Home position search while in PS30 ON
[6]
[5]
[1] Exposure unit stand-by position
[2] Scanner home sensor (PS30)
[3] Shading correction position 1
(2) Home position search while in PS30 OFF
[6]
[5]
[1] Exposure unit stand-by position
[2] Scanner home sensor (PS30)
[3] Shading correction position 1
12
[2]
[4]
[5]
[6]
[2]
[4]
[5]
[6]
Theory of Operation Ver1.0 Feb.2006
[1]
Shading correction position 2
Movement of the exposure unit
Exposure lamp (L1) ON
[1]
Shading correction position 2
Movement of the exposure unit
Exposure lamp (L1) ON
[3]
[4]
50gat2c034na
[3]
[4]
50gat2c035na