Ricoh FT7770 Service Manual page 3

EXPOSURE
Introduction
1.
2. Exposure Lamp Unit
3. Automatic Image Density Sensing
4. Lamp Regulator
5. Optics Cooling Fan
6. Anticondensation Heater
SCANNER DRIVE
1. Introduction
2. Scanner Motor Control
LENS AND MIRROR POSITIONG
1. Lens Positioning
2. Second Scanner Shift
3.
Lens/Mirror Position Initialization
DEVELOPMENT UNIT
1. Introduction
2. Drive Mechanism
3.
Cross Mixing
4. Knocking Solenoid
5. Toner Density Control
6. Image Density Control
7. Bias for ID Sensing
8. Bias Circuit
9. Development Drive Motor
TRANSFER AND SEPARATION
1. PTC (Pre-TransferŽCorona) and PTL
(Pre-Transfer Lamp)
2. Image Transfer
3. Paper Separation
4.
TC/SC Wire Cleaner
5. Pick-off Pawls
6. PTC Power Pack and PTL Stabilizer
7. Transfer/Separation Power Pack
CLEANIG
1. Introduction
2. Drive Mechanism
3.
Cleaning Blade Pressure Mechanism
4. Used Toner Removal
5. Cleaning Solenoid Circuit
6. PCC Power Pack
7.
Cleaning Bias Power Pack
QUENCHING
1.
Introduction
2. Pre-Quenching corona Circuit
3. Quenching Lamp Circuit
2-11
2-12
2-13
2-14
2-16
2-16
2-17
2-18
2-20
2-22
2-23
2-24
2-26
2-27
2-28
2-29
2-33
2-37
2-38
2-40
2-42
2-42
2-43
2-44
2-45
2-46
2-47
2-49
2-50
2-51
2-53
2-55
2-56
2-57
2-58
2-59
2-60