Ricoh FT7770 Service Manual page 377

SPECIFICATIONS
MECHANICAL COMPONENT LAYOUT
ELECTRICAL COMPONENT LAYOUT
ELECTRICAL COMPONENT DESCRIPTIONS
MECHANICAL OPERATION
1. Basic Operation
2. Feed Unit Mechanism
3.
Tray Drive Mechanism
4. Friction Roller Reverse Mechanism
5. Paper Volume Detection
6. Guide Plate and Paper Size Detection
7. Tray Lock and Positioning
ELECTRICAL OPERATION
1. Tray Motor Circuit
2. Paper Tray Heater
3. Tray Set Detection
INSTALLATION
1. Accessory Check
2. Installation Procedure
REPLACEMENT AND ADJUSTMENT
Paper Feed Unit Removal
1.
2. Pick-up Roller Replacement
3. Feed Roller Replacement
4. Friction Roller Replacement
5.
Paper Tray Unit Removal
6. Paper Tray Drive Wire Replacement
CONTENTS
8-1
8-2
8-3
8-4
8-5
8-6
8-7
8-8
8-8
8-9
8-10
8-11
8-12
8-12
8-13
8-14
8-18
8-19
8-20
8-21
8-22
8-23