Minolta Di620 User manual

Di 620
GENERAL,
MECHANICAL/
ELECTRICAL

i
CONTENTS
1155SBG000BA
1. SAFETY INFOMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-1
2. SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-7
3. PRECAUTIONS FOR INFOMATION. . . . . . . . . . . . . . . . . . .G-10
4. PRECAUTIONS FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . .G-11
5. HANDLING OF THE CONSUMABLES . . . . . . . . . . . . . . . . .G-12
6. OTHER PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-12
7. SYSTEM OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-13
1. CROSS-SECTIONAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . .M-1
2. COPYING PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-3
3. DRIVE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-5
4. OPERATING SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . . . .M-6
5. IMAGE STABILIZING SYSTEM. . . . . . . . . . . . . . . . . . . . . . .M-11
5-1. AIDC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-12
5-2. Control Methods the Image Stabilizing System . . . . . . .M-13
6. PC DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-14
6-1. Drum Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . . .M-14
6-2. Grounding of the PC Drum. . . . . . . . . . . . . . . . . . . . . . .M-15
7. DRUM CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-16
7-1. PC Drum Charge Corona Comb Electrode
Cleaning Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . .M-17
7-2. Ozone Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-19
8. IR SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-20
8-1. Exposure Section: Structure and Operation. . . . . . . . . .M-21
8-2. Exposure Lamp ON/OFF Control. . . . . . . . . . . . . . . . . .M-22
8-3. IR Image Processing System. . . . . . . . . . . . . . . . . . . . .M-24
8-4. Image Density Control . . . . . . . . . . . . . . . . . . . . . . . . . .M-26
8-5. Detecting of Original. . . . . . . . . . . . . . . . . . . . . . . . . . . .M-32
8-6. Drive Mechanism for Scanner and Mirror Slide . . . . . . .M-39
8-7. Scanner-Motor Drive Control . . . . . . . . . . . . . . . . . . . . .M-40
8-8. Scanner Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-41
8-9. CCD and Cooling-Fan Motors . . . . . . . . . . . . . . . . . . . .M-43
9. MEMORY SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-44
●Memory-Storage Image Processing System . . . . . . . . . . .M-45
GENERAL
MECHANICAL/ELECTRICAL

ii
CONTENTS
10.PH SECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-47
10-1.PH Image Processing System . . . . . . . . . . . . . . . . . . .M-49
10-2.Laser Emission Timing (SOS Signal) . . . . . . . . . . . . . .M-51
11.DEVELOPING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-53
11-1.Developing Unit Drive Mechanism . . . . . . . . . . . . . . . .M-54
11-2.Magnetic Pole Positioning. . . . . . . . . . . . . . . . . . . . . . .M-55
11-3.Developing Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-57
11-4.ATDC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-58
11-5.Sub Hopper Toner Replenishing Mechanism . . . . . . . .M-60
11-6.Sub-Hopper Toner Empty Detection Mechanism . . . . .M-61
11-7.Main Hopper Toner Replenishing Mechanism . . . . . . .M-62
11-8.Coupling Locking Mechanism. . . . . . . . . . . . . . . . . . . .M-63
11-9.Toner Supply Hole Covering/Uncovering
Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-63
11-10.Toner Suction Fan Motor. . . . . . . . . . . . . . . . . . . . . . .M-64
12.PAPER TAKE-UP/FEED SECTION. . . . . . . . . . . . . . . . . . . .M-65
12-1.Drawer-in-Position Detection . . . . . . . . . . . . . . . . . . . .M-66
12-2.Paper Empty Detection. . . . . . . . . . . . . . . . . . . . . . . . .M-67
12-3.Paper Lifting/Lowering Mechanism. . . . . . . . . . . . . . . .M-69
12-4.Paper Stack Lowering/Drawer Locking Mechanism
(Inch Area) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-72
12-5.Paper Level Detecting. . . . . . . . . . . . . . . . . . . . . . . . . .M-73
12-6.Universal Tray (2nd Drawer) Paper Size Detection. . . .M-74
12-7.3rd Drawer-in-Position Detection . . . . . . . . . . . . . . . . .M-76
12-8.3rd Drawer Paper Empty Detection . . . . . . . . . . . . . . .M-77
12-9.Main Tray Paper Stack Lifting/Lowering Mechanism. . .M-79
12-10.3rd Drawer Paper Level Detecting Mechanisms. . . . .M-82
12-11.Shifter Drive Mechanism. . . . . . . . . . . . . . . . . . . . . . .M-83
12-12.Shift Gate Drive Mechanism . . . . . . . . . . . . . . . . . . . .M-84
12-13.3rd Drawer Lock/Release . . . . . . . . . . . . . . . . . . . . . .M-85
12-14.Paper Dehumidifying Heaters (Except Europe,
U.S.A., and Canada). . . . . . . . . . . . . . . . . . . . . . . . . .M-86
12-15.Drawer Paper Take-Up Mechanism. . . . . . . . . . . . . . .M-87
12-16.Vertical Transport Drive Mechanism . . . . . . . . . . . . . .M-92
12-17.Multi Bypass Table . . . . . . . . . . . . . . . . . . . . . . . . . . .M-93

iii
CONTENTS
13.TRANSPORT/SYSCHRONIZING ROLLERS UNIT. . . . . . . .M-98
13-1.Paper Dust Remover. . . . . . . . . . . . . . . . . . . . . . . . . . .M-99
13-2.Transport Roller Drive Mechanism . . . . . . . . . . . . . . . .M-99
13-3.Transport Roller Drive Control . . . . . . . . . . . . . . . . . . .M-100
13-4.Synchronizing Roller Drive Mechanism . . . . . . . . . . . .M-101
13-5.Synchronizing Roller Drive Control. . . . . . . . . . . . . . . .M-101
14.IMAGE TRANSFER AND PAPER SEPARATION . . . . . . . . .M-102
14-1.Ozone Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-103
14-2.Image Transfer/Paper Separator Corona Wires
Cleaning Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . .M-104
15.CLEANING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-106
15-1.Cleaning Blade Moving Mechanism . . . . . . . . . . . . . . .M-107
15-2.Toner Conveying/Collecting Mechanism. . . . . . . . . . . .M-108
15-3.PC Drum Paper Separator Fingers Moving
Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-109
16.MAIN ERASE LAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-112
17.TRANSPORT SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-113
18.FUSING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-114
18-1.Drive for the Fusing Unit. . . . . . . . . . . . . . . . . . . . . . . .M-115
18-2.Fusing Rollers Pressure Mechanism . . . . . . . . . . . . . .M-116
18-3.Oil Application Mechanism . . . . . . . . . . . . . . . . . . . . . .M-116
18-4.Cleaning Web Take-Up Mechanism . . . . . . . . . . . . . . .M-117
18-5.Fusing Temperature Control . . . . . . . . . . . . . . . . . . . . .M-118
18-6.CPM Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-120
19.EXIT/DUPLEX SWITCHING SECTION. . . . . . . . . . . . . . . . .M-122
●Exit/Duplex Switching Mechanism . . . . . . . . . . . . . . . . . . .M-123
20.TURNOVER SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-124
20-1.Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-125
20-2.Turnover Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-126
20-3.Roller Separation Control . . . . . . . . . . . . . . . . . . . . . . .M-127
21.LOWER-PAPER-EXIT SWITCHING SECTION. . . . . . . . . . .M-128
●Paper-Exit Switching Section . . . . . . . . . . . . . . . . . . . . . . .M-129
22.DUPLEX UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-130
23.MEMORY BACKUP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-132
24.FLASH MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-133

1151SBG000CA
GENERAL

G-1
1155SBG0100A
This copy machine is a digital copy machine which operates by means of a laser.
There is no possibility of danger from the laser, provided the copy machine is
operated according to the instructions in this manual provided.
Since radiation emitted by the laser is completely confined within protective housing,
the laser beam cannot escape from the machine during any phase of user operation.
This copy machine is certified as a Class 1 laser product. This means the copy
machine does not produce hazardous laser radiation.
CAUTION: The use of controls, adjustments or performance of procedures
other than those specified in this manual may result in hazardous radiation
exposure. Because of this, Minolta strongly recommends that you operate your
copy machine only as described in this documentation.
For United States Users:
Laser Safety
This copy machine is certified as a Class 1 Laser product under the U.S. Department
of Health and Human Services (DHHS) Radiation Performance Standard according to
the Radiation Control for Health and Safety Act of 1968. This means that the copy
machine does not produce hazardous laser radiation.
CDRH Regulations
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug
Administration implemented regulations for laser products on August 2, 1976.
Compliance is mandatory for products marketed in the United States. The label
shown below indicates compliance with the CDRH regulations and must be attached
to laser products marketed in the United States.
Internal Laser Radiation
Maximum Radiation Power: 15mW x 2
Wave Length: 780nm
LUOKAN 1 LASERLAlTE
KLASS 1 LASER APPARAT
WARNING: Use of controls, adjustments or performance of procedures other than
those specified in this manual may result in hazardous radiation exposure.
1SAFETY INFORMATION

G-2
For European Users:
For Denmark Users:
For Finland, Sweden Users:
For Norway Users:
WARNING: Use of controls, adjustments or performance of procedures other than
those specified in this manual may result in hazardous radiation exposure.
This is a semiconductor laser. The maximum power of the laser diode is
15mW and the wavelength is 780nm. (Two provided.)
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
Klasse 1 laser produkt der opfylder lEC825 sikkerheds kravene.
VAROlTUS
Laitteen Käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa
altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälIe lasersäteiylle.
VARNING
Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan
användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laser
klass 1.
ADVERSEL
Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning,
kan brukeren utsettes for unsynlig laserstråling som overskrider grensen for laser
klasse 1.
Dette en halvleder laser. Maksimal effeckt till laserdiode er 15mW og
bφlgelengde er 780nm.

G-3
Laser Safety Labels
Laser safety labels are attached to the outside of the copy machine as shown below.
1155O653AA
1155O698CB
1155O699EA
For Europe
For United States

G-4
Label inside copy machine
The following laser safety label will be attached inside the copy machine as shown
below.
1155G002AA

G-5
1155SBG000D
ALL Areas CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according
to the manufacturer’s instructions
Germany only VORSICHT!
Explosinsgefahr bei unsachgemäßen austausch der
batterie. Ersatz nur durch denselben oder einen vom hersteller
empfohlenen ähnlichen typ. Entsorgung gebrauchter batterien
nach angaben des herstellers.
Denmark only ADVARSEL!
Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering
Udskiftning må kun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
Norway only ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende
type anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
Sweden only VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent
typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens
instruktion.
Finland only VAROlTUS
Paristo voi räjähtää, los se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä Käytetty paristo valmistajan ohjeiden
mukaisesti.