Minolta Di251 Service Manual page 19

1. CROSS-SECTIONAL VIEW ............................................................................ M-1
2. COPYING PROCESS ...................................................................................... M-2
3. DRIVE SYSTEM .............................................................................................. M-4
4. OPERATING SEQUENCE .............................................................................. M-5
5. CPU OVERRUN MONITOR FUNCTION ......................................................... M-6
5-1. Processing Performed during Watchdog Function .................................. M-6
6. IMAGE STABILIZATION SYSTEM .................................................................. M-7
7. IMAGING CARTRIDGE (I/C) ........................................................................... M-8
7-1. I/C Drive Mechanism ............................................................................... M-9
7-2. Identification and Life of I/C ..................................................................... M-9
8. PC DRUM ........................................................................................................ M-10
8-1. Grounding of the PC Drum ...................................................................... M-10
9. DRUM CHARGING .......................................................................................... M-11
(1) Ozone Fan ....................................................................................... M-12
10. IR SECTION .................................................................................................... M-13
10-1.Construction of the Exposure Section ..................................................... M-14
10-2.Image Processing Flow ........................................................................... M-15
10-3.Scanner and 2nd/3rd Mirrors Carriage Moving Mechanism .................... M-16
(1) Scanner Moving Mechanism ........................................................... M-16
(2) 2nd/3rd Mirrors Carriage Moving Mechanism ................................. M-16
11. ORIGINAL SIZE DETECTING SYSTEM ......................................................... M-17
11-1.Original Size Detecting Operation ........................................................... M-18
11-2.Original Size Detection ............................................................................ M-18
11-3.Original Size Detection Timing ................................................................ M-19
12. PH SECTION ................................................................................................... M-20
12-1.Laser Emission Timing ............................................................................ M-21
13. DEVELOPING UNIT ........................................................................................ M-22
13-1.Sleeve/Magnet Roller .............................................................................. M-23
13-2.Developing Bias ....................................................................................... M-23
13-3.ATDC Sensor .......................................................................................... M-24
(1) ATDC Sensor Automatic Adjustment .............................................. M-24
(2) Toner Replenishing Control ............................................................. M-24
(3) Toner Empty Control (T/C Recovery Mode) .................................... M-25
13-4.Toner Bottle Home Position Detection Mechanism ................................. M-26
13-5.Toner Bottle Vibration Mechanism .......................................................... M-26
13-6.Main Hopper Toner Replenishing Mechanism ........................................ M-27
13-7.Sub Hopper Toner Replenishing Mechanism .......................................... M-28
13-8.Sub Hopper Toner Empty Detection Control ........................................... M-28
14. PAPER TAKE-UP/FEED SECTION ................................................................ M-29
14-1.1st Drawer-in-Position Detection ............................................................. M-29
14-2.1st Drawer Paper Empty Detection ......................................................... M-30
14-3.1st Drawer Paper Near-Empty Detection ................................................ M-30
14-4.1st Drawer Paper Lifting Plate ................................................................. M-31
14-5.1st Drawer Paper Size Detection ............................................................ M-31
(1) Paper Size Table According to Sensor/Switch Conditions .............. M-32
14-6.Drawer Paper Take-Up Mechanism ........................................................ M-33
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