Unit Explanation; Scanner Section; Composition - Konica Minolta 7145 Service Manual

II

UNIT EXPLANATION

1. SCANNER SECTION

1.1

Composition

[7]
[6]
Symbol Name
[1] INV1 (Exposure lamp inverter) L1 (Exposure lamp) turn on
[2] PS17 (APS sensor)
[3] ADB (A/D converter board)
[4] CCD unit
[5] Exposure unit
[6] Optical wire
[7] V-mirror unit
[8] PS14 (Scanner HP sensor)
L1 (Exposure lamp)
[9]
L1INVB (Power supply board
[10]
for exposure lamp)
M2 (Scanner motor)
[11]
[12] PS15 (APS timing sensor)
[8] [9] [10] [11]
[5] [4]
Detection of original size in the direction of sub-scanning
Digital conversion of analog signal
Photoelectric conversion of read image (600dpi)
Image reading
Light source slit exposure
Scan speed
• Forward: 230mm/sec. (in 1:1 magnification)
• Backward: 383mm/sec.
Transmission of driving force from M2 to the exposure unit and
the V-mirror unit (front and rear)
Reflection of reading light (2nd and 3rd mirrors)
Exposure unit HP detection
Light source for reading image,
Xenon lamp
Relay board for INV1 (Exposure lamp inverter) and L1 (Expo-
sure lamp)
Driving of the optical wire used to move the exposure unit and
the V-mirror unit
Three-phase step motor
RADF open/close detection
2-1
7235/7228/7222
[12]
7145
[3] [2] [1]
Function or method
SCANNER SECTION
CB
SCDB
CB
SCB
7322ma2001e
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