Ricoh FT7770 Service Manual page 9

Copier
Table of Contents

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ELECTRICAL OPERATION
1.
2.
3.
4.
5.
6.
7.
8.
SERVICE
1.
2.
3.
4.
5.
6.
7.
REPLACEMENT AND ADJUSTMENT
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
TIMING CHART 1
DF MAIN BAORD SCHEMATIC
SECTION 8:
SPECIFICATIONS
MECHANICAL COMPONENT LAYOUT
ELECTRICAL COMPONENT LAYOUT
ELECTRICAL COMPONENT DESCRIPTIONS
Interface With Copier
Feed-in Sensor
Motor Control
DF Misfeed Check
Application Switch
Form Size Switch
CFF Feed Hole and Set Sensors
TABLES
Test Point Table
Variable Resistor Table
LED Table
DIP Switch Table
Blown Fuse Table
Switch Failure Table
Sensor Failure Table
Separation Roller Replacement
Friction Tab Replacement
Pick-up Roller Replacement
Transport Unit Cover Removal
Feed Belt Removal
Inverter Entrance and Inverter
Sensor Replacement
Turn Roller Replacement
Inverter Roller Replacement
DF Removal
Original Skew Adjustment
Original Leading Edge Adjustment
Registration Sensor
Threshold Level Adjustment
Speed Adjustment
LARGE CAPACITY TRAY
Registration
7-24
7-25
7-26
7-27
7-29
7-30
7-31
7-32
7-33
7-33
7-34
7-35
7-36
7-36
7-37
7-38
7-39
7-40
7-43
7-44
7-45
7-46
7-47
7-48
7-50
7-51
7-52
7-53
7-54
7-55
7-56
7-57
8-1
8-2
8-3
8-4

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