Variable Resistors; Main Baord Schematic 2 - Ricoh FT7770 Service Manual

SERVICE TABLES
1. Test Point Table
Variable Resistor Table
2.
3. LED Table
4. DIP Switch Table
Blown Fuse Table
5.
6. Switch Failure Table
7. Sensor Failure Table
REPLACEMENT AND ADJUSTMENT
Separation Roller Replacement
1.
Friction Tab Replacement
2.
Pick-up Roller Replacement
3.
Transport Unit Cover Removal
4.
Feed Belt Removal
5.
Inverter Entrance and Inverter Registration
6.
Sensor Replacement
7. Turn Roller Replacement
8. Exit Roller/Pull-out Roller Replacement
9. Inverter Roller Replacement
DF Removal
10.
Original Skew Adjustment
11.
12. Original Leading Edge Adjustment
Registration Sensor
13.
Threshold Level Adjustment
14.
Feed-in, Belt, and Inverter Motor
Speed Adjustment
TIMING CHART 1
TIMING CHART 2
DF MAIN BAORD SCHEMATIC
30
April, '89
7-33
7-33
7-34
7-35
7-36
7-36
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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