Minolta CF910 User manual

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
CF910
SERVICE MANUAL
1154-7990-11

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
i
CONTENTS
GENERAL
1. SAFETY INFORMATION ...................................................................................G-1
2. SPECIFICATIONS .............................................................................................G-6
3. PRECAUTIONS FOR INSTALLATION ..............................................................G-9
4. PRECAUTIONS FOR USE ................................................................................G-10
5. HANDLING OF THE CONSUMABLES ..............................................................G-11
6. OTHER PRECAUTIONS ....................................................................................G-11
7. SYSTEM OPTIONS ...........................................................................................G-12
8. HIGHLIGHTS .....................................................................................................G-13
MECHANICAL/ELECTRICAL
1. CROSS-SECTIONAL VIEW AND PAPER PATH ..............................................M-1
2. COPY PROCESS ..............................................................................................M-2
3. DRIVE SYSTEM ................................................................................................M-5
4. OPERATING SEQUENCE .................................................................................M-6
5. CONTROL BLOCK DIAGRAM ...........................................................................M-11
6. IMAGE STABILIZATION SYSTEM ....................................................................M-12
6-1. Image Stabilization System Overview ......................................................M-12
6-2. Image Stabilization System Control ..........................................................M-13
7. PC DRUM SECTION .........................................................................................M-16
7-1. Grounding of the PC Drum .......................................................................M-16
7-2. PC Drum Drive Mechanism ......................................................................M-17
7-3. PC Drum Temperature Control .................................................................M-18
8. PC DRUM CHARGING SECTION .....................................................................M-19
8-1. PC Drum Charge Corona ON/OFF Control ..............................................M-19
8-2. PC Drum Charge Corona Wire Cleaning Mechanism ..............................M-20
8-3. PC Drum Charge Section Ozone Filter ....................................................M-21
9. IMAGE READER (IR) SECTION ........................................................................M-22
9-1. IR Image Processing ................................................................................M-23
9-2. CCD Sensor .............................................................................................M-32
9-3. Exposure Components Section ................................................................M-33
9-4. Exposure Lamp Control ............................................................................M-34
9-5. Scanner and 2nd/3rd Mirrors Carriage Movement Mechanism ................M-35
9-6. Scanner Motor Drive Control ....................................................................M-36
9-7. IR Section Cooling Fan Motor Mechanism ...............................................M-38
9-8. Original Size Detecting Section ................................................................M-39
10. PRINTERHEAD (PH) SECTION ......................................................................M-42
10-1. Image Processing Block Diagram ..........................................................M-43
10-2. Laser Exposure Process ........................................................................M-45
10-3. Laser Emission Timing (SOS Signal) .....................................................M-46
10-4. Laser Emission Area (HIA and VIA Signals) ..........................................M-47
10-5. LIMOS I and New Screen LIMOS ...........................................................M-48
11. DEVELOPING UNIT SECTION .......................................................................M-49
11-1. Developing Unit Drive Mechanism .........................................................M-51
11-2. Developer Flow .......................................................................................M-53
11-3. Developing Bias and ATDC Bias ............................................................M-55

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
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11-4. ATDC Sensor .........................................................................................M-56
11-5. AIDC Sensor ...........................................................................................M-58
11-6. Black Toner Replenishing Control ..........................................................M-59
11-7. Auxiliary Toner Replenishing Mechanism ..............................................M-61
11-8. Toner Suction Fan Motor ........................................................................M-62
12. TONER HOPPER SECTION ...........................................................................M-63
12-1. Toner Replenishing Mechanism .............................................................M-64
12-2. Toner Empty Detection Control ..............................................................M-66
13. PAPER TAKE-UP/FEED SECTION .................................................................M-67
13-1. Universal Tray Paper Size Detection Mechanism ..................................M-68
13-2. Drawer-in-Position Detection Mechanism ..............................................M-70
13-3. Drawer Paper Lifting/Lowering Mechanism ............................................M-71
13-4. Paper Empty Detection Mechanism .......................................................M-73
13-5. Paper Take-Up Mechanism ....................................................................M-74
(1) Paper Separating Mechanism ...........................................................M-75
(2) Feed/Separator Roll Release Mechanism .........................................M-75
(3) Paper Take-Up Roll Retracting Mechanism ......................................M-76
13-6. Paper Dehumidifying Heaters and Humidity Sensor ..............................M-77
13-7. Vertical Transport Drive Mechanism ......................................................M-78
13-8. Paper Take-Up Control ...........................................................................M-79
14. MANUAL FEED TABLE SECTION ..................................................................M-81
14-1. Manual Feed Paper Take-Up Mechanism ..............................................M-81
14-2. Manual Feed Take-Up Control ...............................................................M-82
14-3. Manual Take-Up Roll Pressure Mechanism ...........................................M-83
14-4. Manual Feed Paper Separating Mechanism ..........................................M-84
14-5. Manual Feed Paper Empty Detection Mechanism .................................M-85
14-6. Manual Feed Paper Width Detection Mechanism ..................................M-86
14-7. Manual Feed Paper Length Detection Mechanism ................................M-87
15. SYNCHRONIZING ROLLERS SECTION ........................................................M-88
15-1. Synchronizing Roller Drive Mechanism ..................................................M-88
15-2. Synchronizing Roller Drive Control .........................................................M-89
16. TRANSFER DRUM SECTION .........................................................................M-90
16-1. Transfer Drum Drive Mechanism ............................................................M-91
16-2. Paper Attraction ......................................................................................M-92
(1) Static Charge Roller ..........................................................................M-93
(2) Backup Blade 2 .................................................................................M-94
(3) Static Charge Corona ........................................................................M-94
(4) Charge Neutralizing Cloth .................................................................M-94
(5) Paper Attraction Detection (before image transfer) ...........................M-95
(6) Control ...............................................................................................M-95
16-3. Image Transfer Section ..........................................................................M-96
(1) Backup Blade 1 .................................................................................M-97
(2) Image Transfer Corona .....................................................................M-98
(3) Charge Neutralizing Cloth .................................................................M-98
(4) Paper Attraction Detection (after image transfer) ..............................M-98
(5) Image Transfer Control .....................................................................M-99
16-4. Paper Separation Section .......................................................................M-100

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
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(1) Paper Separation Lifting Finger .........................................................M-101
(2) Paper Separator Corona ...................................................................M-101
(3) Paper Separator Finger .....................................................................M-101
(4) Paper Separating Failure Detection Mechanism ...............................M-102
(5) Paper Holding Mechanism ................................................................M-102
(6) Paper Separation Control ..................................................................M-103
16-5. Transfer Film Cleaning Mechanism ........................................................M-104
16-6. Oil Cleaning ............................................................................................M-105
(1) Oil Cleaning Backup Brush ...............................................................M-106
(2) Oil Roller ............................................................................................M-106
(3) Oil Cleaning Control ..........................................................................M-107
16-7. Toner Cleaning .......................................................................................M-108
(1) Toner Cleaning Backup Brush ..........................................................M-109
(2) Fur Brush Unit ...................................................................................M-109
(3) Fur Brush Roller/Toner Collecting Roller ...........................................M-110
(4) Fur Brush Control ..............................................................................M-111
16-8. Charge Neutralizing ................................................................................M-112
16-9. Transfer Drum Retraction Mechanism ....................................................M-113
17. PC DRUM CLEANING SECTION ....................................................................M-114
17-1. Pre-Cleaning Charge Corona .................................................................M-114
17-2. PC Drum Cleaning ..................................................................................M-115
17-3. Ozone Exhaust from Pre-Cleaning Charge Corona and Transfer Drum M-116
18. MAIN ERASE SECTION ..................................................................................M-117
19. FUSING UNIT SECTION .................................................................................M-118
19-1. Fusing Unit Drive Mechanism .................................................................M-119
(1) Upper Fusing Roller ..........................................................................M-119
(2) Lower Fusing Roller ..........................................................................M-119
(3) Fusing Rollers Drive Mechanism .......................................................M-120
(4) Fusing Rollers Drive Control .............................................................M-121
(5) Fusing Speed Switching Control .......................................................M-121
19-2. Fusing Roller Pressure Mechanism ........................................................M-122
19-3. Fusing Temperature Control ...................................................................M-123
19-4. Fusing Oil Application/Collection Mechanism .........................................M-125
(1) Fusing Oil Application Drive Mechanism ...........................................M-126
20. EXIT UNIT SECTION .......................................................................................M-127
21. HORIZONTAL TRANSPORT UNIT SECTION ................................................M-128
22. POWER SUPPLY ............................................................................................M-130
22-1. Power Lines When the Power Cord is Plugged in ..................................M-130
22-2. Power Lines When the Power Switch is Turned ON ..............................M-131
22-3. Power Supplies ON/OFF Control ...........................................................M-132
22-4. CPU Reset Function ...............................................................................M-132
22-5. Power Supply Cooling Mechanism .........................................................M-132
23. MEMORY BACKUP .........................................................................................M-133

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-1
1154SBG0100A
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 provided in this manual. 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 docu-
mentation.
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 Admin-
istration 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 prod-
ucts marketed in the United States.
WARNING
Use of controls, adjustments or performance of procedures other than those specified in
this manual may result in hazardous radiation exposure.
Internal Laser Radiation
Maximum Radiation Power: 8mW
Wave Length: 780nm
1SAFETY INFORMATION
LUOKAN 1 LASERLAlTE
KLASS 1 LASER APPARAT

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-2
For Europe 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
8mW and the wavelength is 780nm.
For Denmark Users:
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
Klasse 1 laser produkt der opfylder lEC825 sikkerheds kravene.
For Finland, Sweden Users:
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 använ-
daren utsättas för osynlig laserstrålning, som överskrider gränsen för laser klass 1.
For Norway Users:
ADVERSEL
Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan bruk-
eren utsettes for unsynlig laserstråling som overskrider grensen for laser klasse 1.
Dette en halvleder laser. Maksimal effeckt till laserdiode er 8mW og bφlgelengde er 780nm.

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-3
Laser Safety Labels
Label on copy machine surface
Laser safety labels are attached on the outside of the copy machine as shown below.
CLASS 1 LASER PRODUCT
LASER KLASSE 1 PRODUKT
1154O048AD
MINOLTA CO., LTD
2, Higashiakatsuchi, Yawata-cho, Toyokawa-shi
Aichi-ken 442-8585, Japan
MANUFACTURED:
THIS PRODUCT COMPLIES WITH 21 CFR
CHAPTER I, SUBCHAPTER J.
0946-7101-14
WARNING
This devlce complles with Part15 of theFCC Rules.Operation
is subject to the followin two conditions : (1) this device may
not cause harmfulmInterference. and (2) this device mutst
accept any interference recelved. Including Interference that
may cause undesired operation.
• This Class A digital apparatus complies with
Canadian ICES-003.
•
Cet appareil numérique de la classe A est conforme à la
norme NMB-003 du Canada.
Model
Input
Total
LISTED
199C
I.T.E.
Serial No.
MINOLTA CO., LTD.
WHz
A
U
. L U . L
C
1154O048AD
For Europe
For United States

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-4
Label inside copy machine
The following laser safety label will be attached inside the copy machine as shown below.
@ B
CAUTION- INVISIBLE LASER RADIATIONWHEN OPEN AVOID
EXPOSURE TO BEAM
VORSICHT- UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG
GEÖFFNET NICHT DEM STRAHL AUSSETZEN
VARO! AVATTAESSA OLET ALTTIINA NÅKYM TTÖM ÄLLE
LASERSÄTEILYLLE ÄLÄ KATSO SÄTEESEEN
ADVARSEL- USYNLIG LASERSTR ÅLING VEDÅ BNING UNDGÅ
UDSÆTTELSE FOR STRÅLING
VARNING- OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD
STRÅLEN ÄR FARLIG
DANGER
Invisible laser radiation when open.
AVOID DIRECT EXPOSURE TO BEAM
0947-7127-01
DANGER
Invisible laser radiation when open.
AVOID DIRECT EXPOSURE
TO BEAM
0947-7127-01
1154M085AD
Å
B
CAUTION- INVISIBLE LASER RADIATIONWHEN OPEN AVOID
EXPOSURE TO BEAM
VORSICHT- UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG
GEÖFFNET NICHT DEM STRAHL AUSSETZEN
VARO! AVATTAESSA OLET ALTTIINA NÅKYM TTÖM ÄLLE
LASERSÄTEILYLLE ÄLÄ KATSO SÄTEESEEN
ADVARSEL- USYNLIG LASERSTR ÅLING VEDÅ BNING UNDGÅ
UDSÆTTELSE FOR STRÅLING
VARNING- OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD
STRÅLEN ÄR FARLIG
Å
@ B
CAUTION- INVISIBLE LASER RADIATIONWHEN OPEN AVOID
EXPOSURE TO BEAM
VORSICHT- UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG
GEÖFFNET NICHT DEM STRAHL AUSSETZEN
VARO! AVATTAESSA OLET ALTTIINA NÅKYM TTÖM ÄLLE
LASERSÄTEILYLLE ÄLÄ KATSO SÄTEESEEN
ADVARSEL- USYNLIG LASERSTR ÅLING VEDÅ BNING UNDGÅ
UDSÆTTELSE FOR STRÅLING
VARNING- OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD
STRÅLEN ÄR FARLIG
Å
@ B
CAUTION- INVISIBLE LASER RADIATIONWHEN OPEN AVOID
EXPOSURE TO BEAM
VORSICHT- UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG
GEÖFFNET NICHT DEM STRAHL AUSSETZEN
VARO! AVATTAESSA OLET ALTTIINA NÅKYM TTÖM ÄLLE
LASERSÄTEILYLLE ÄLÄ KATSO SÄTEESEEN
ADVARSEL- USYNLIG LASERSTR ÅLING VEDÅ BNING UNDGÅ
UDSÆTTELSE FOR STRÅLING
VARNING- OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD
STRÅLEN ÄR FARLIG
Å
1154M085AD
For United States For Europe
For United States
For Europe

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-5
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.
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, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä Käytetty paristo valmistajan ohjeiden
mukaisesti.

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-6
1154SBG0200A
2SPECIFICATIONS
Type Freestanding
Platen Type Stationary
Original Scanning Scanning in the main-scanning direction with a reduction-type
color CCD (RGB 3 lines) sensor
Resolution 400 dpi
Scanning Density 400 dpi ×400 dpi
Print Density 400 dpi ×400 dpi
Copying System Electrostatic dry powdered image transfer to plain paper
Paper Feeding
System Four-way system
•Multi Bypass Table: 50 sheets of paper
•Middle Drawer (universal type): 250 sheets of paper
•Upper and Lower Drawer (fixed-size type): Each holding up to
500 sheets of paper
Exposure System Laser Diode 1 + Polygon Mirror
Developing System New Micro-Toning System
Charging System Scorotron system (single-wire DC(–) + grid mesh)
Paper Attraction
System Static charge attraction system (corotron charger + attraction roller + backup mechanism)
Image Transfer
System Static image transfer system (corotron charger + backup mecha- nism)
Paper Separating
System Static charge separating system (corotron charger + separator fingers + film pressure mechanism)
Transfer Film
Cleaning System Fur brush, oil roller
PC Drum Cleaning
System Cleaning Blade + PC Drum Charge Neutralizing Corona
Ozone Removal
System Ozone Filters
Fusing System Two lamp-heated rollers
Transfer Film Charge
Neutralizing Static charge neutralizing (corotron charger)
PC Drum OPC-MLII (Organic Photoconductor)
Types of Originals Sheet, book, and three-dimensional objects weighing up to 2 kg
or 4-1/2 lbs.
Maximum Size of
Original Metric - A3L Inch - 11” × 17” L
Copy Paper Size Multi Bypass Table:Metric - A3 wide L (305 mm × 457 mm) to
A5L, A6 thick paper
Inch - 12” × 18” to 5-1/2” × 8-1/5”L,
4” × 6” thick paper
Upper/Middle/Lower Drawer:Metric - A3L to A5L
Inch - 11” × 17”L to 5-1/2” × 8-1/2” L

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
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Copy Paper Type:
Warming-up Time Approx. 9 min. at ambient temperature of 20°C and rated source
voltage
Warming-up Time
After Energy Saver
Mode 60 sec. or less
First Copy Time (Upper Drawer, ×1.000, Manual Exposure Mode)
Copying Speed for Multi-Copy Cycle (Upper Drawer, ×1.000) (copies/min.)
❍: Reliably fed —: Unreliably fed
✽: Reliably fed if 20 sheets or less
1st to 3rd Drawers
(automatic feeding) Multi Bypass Table
Copy paper
Plain paper (64 to 90 g/m2)❍❍
Translucent paper — —
OHP transparencies (dedicated) — ✽❍
Thick paper (91 to 105 g/m2)—❍
Thick paper (106 to 157 g/m2)—✽❍
A6 thick paper (for MH)
4” × 6” thick paper (for MC) —✽❍
Recycled paper — —
Dimensions
Max. (width × length mm) 297 ×432 mm 305 ×457 mm
Min. (width × length mm) 140 ×182 mm
140 × 182 mm [A6
thick paper 105 ×
148 mm (Metric)
4” × 6” thick paper
102 × 152 mm
(Inch)]
Area Paper Size Full Color Mono Color
Inch 8-1/2” ×11”L 30 sec. 14 sec.
Metric A4L
Area Paper Size Full Color Mono Color
Metric
A3L 311B4L
A4L
A4C 623
A5L
Inch
11” ×17” 311
8-1/2” ×11”L
8-1/2” ×11”C 623
5-1/2” ×8-1/2”L

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
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Multiple Copies 1 to 99 copies (count-down system)
Zoom Ratios
Void Image Width
Leading edge: 8 mm [4” ×6” thick paper (Inch), A6 thick paper
(Metric); 5 mm]
Trailing edge: 4 mm
Front/rear edge: 3 mm [4” ×6” thick paper (Inch), A6 thick paper
(Metric); 5 mm]
Lens Through lens (F=5, f=61.1 mm)
Light Source Halogen frost tube lamp
Fusing Temperature Upper/Lower Fusing Roller surface temperature: 155°C
Power/Current Consumption (copier with full set of options)
Power Requirements 120V, 220V to 240V; 50Hz/60Hz
Environmental Conditions
Dimensions 640 (W) ×765 (D) ×994 (H) mm (H: Up to Original Glass surface)
640 (W) ×765 (D) ×1024 (H’) mm (H’: up to Original Cover)
Weight 215 kg or 474 lbs.
Standard Accessories Exit Tray, Multi Bypass Table
Options •Duplexing Document Feeder
AFR-12
•ADF Kit D
•10 Bin Staple Sorter ST-103
•10 Bin Sorter S-105
•Duplex Unit AD-7
•Editor Board E-2M
•Editor Display E-2D
•Mount Kit E
•Data Controller D-102
•Plug-In Counter
•
Large Capacity Cassette C-101
•Data Terminal DT-104
Fixed
Full size ×1.000
Enlargement Inch ×1.214, ×1.294, ×2.000
Metric ×1.154, ×1.224, ×1.414
Reduction Inch ×0.647, ×0.733, ×0.785
Metric ×0.707, ×0.816, ×0.866
Variable ×0.250 to ×6.000 (in 0.001 increments)
Exposure Lamp
(Rating)
Fusing Roller
Heater Lamp
(Rating)
Max. Power
Consumption Max. Current Consumption
70V
150W
120V/220V to 240V
Upper: 650W
Lower: 400W 1500W 13A/7A
Temperature Humidity Ambient Illumination Levelness
10 to 30°C with a
fluctuation of 10°C
or less per hour
25 to 85% with a
fluctuation of 20%
RH or less per hour 3000 lux or less 1° or less

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
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1154SBG0300A
Installation Site
To ensure safety and utmost performance of the copier, the copier should NOT be used in a
place:
•Where it will be subjected to extremely high or low temperature or humidity.
•Which is exposed to direct sunlight.
•Which is in the direct air stream of an air conditioner, heater or ventilator.
•Which puts the operator in the direct stream of exhaust from the copier.
•Which has poor ventilation.
•Where ammonia gas might be generated.
•Which does not have a stable, level floor.
•Where it will be subjected to sudden fluctuations in either temperature or humidity. If a
cold room is quickly heated, condensation forms inside the copier, resulting in blank
spots in the copy.
•Which is near any kind of heating device.
•Where it may be splashed with water.
•Which is dirty or where it will receive undue vibration.
•Which is near volatile flammables or curtains.
Power Source
Use an outlet with a capacity of 120V/13A, or 220V to 240V/7A or more.
•If any other electrical equipment is sourced from the same power outlet, make sure that
the capacity of the outlet is not exceeded.
•Use a power source with little voltage fluctuation.
•Never connect bymeans of a multiple socket any other appliances or machines to the
outlet being used for the copier.
•Make the following checks at frequent intervals:
✽Is the power plug abnormally hot?
✽Are there any cracks or scrapes in the cord?
✽Has the power plug been inserted fully into the outlet?
✽Does something, including the copier itself, ride on the power cord?
•Ensure that the copierdoesnot ride on the power cord or communications cable of other
electrical equipment, and that it does not become wedged into or underneath the mecha-
nism.
Grounding
To prevent receiving electrical shocks in the case of electrical leakage, always ground the
copier.
•Connect the grounding wire to:
✽The ground terminal of the outlet.
✽A grounding contact which complies with the local electrical standards.
•Never connect the grounding wire to a gaspipe, the grounding wire for a telephone, or a
water pipe.
3PRECAUTIONS FOR INSTALLATION

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-10
1154SBG0400A
To ensure that the copier is used in an optimum condition, observe the following precau-
tions.
•Never place a heavy object on the copier or subject the copier to shocks.
•Insert the power plug all the way into the outlet.
•Do not attempt to remove any panel or cover which is secured while the copier is making
copies.
•Do not turn OFF the Power Switch while the copier is making copies.
•Provide good ventilation when making a large number of copies continuously.
•Never use flammable sprays near the copier.
•If the copier becomes inordinately hot or produces abnormal noise, turn it OFF and
unplug it.
•Do not turn ON the Power Switch at the same time when you plug the power cord into
the outlet.
•When unplugging the power cord, do not pull on the cord; hold the plug and pull it out.
•Do not bring any magnetized object near the copier.
•Do not place a vase or vessel containing water on the copier.
•Be sure to turn OFF the Power Switch at the end of the workday or upon power failure.
•Use care not to drop paper clips, staples, or other small pieces of metal into the copier.
Operating Environment
The operating environmental requirements of the copier are as follows.
•Temperature: 10°C to 30°C with a fluctuation of 10°C per hour
•Humidity: 25% to 85% RH with a fluctuation of 20% RH per hour
Power Requirements
The power source voltage requirements are as follows.
•Voltage Fluctuation: AC120/230V
±10% (Copying performance assured)
–15% (Paper feeding performance assured)
•Frequency Fluctuation: 50/60 Hz ±0.3%
4PRECAUTIONS FOR USE

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-11
1154SBG0500A
Before using any consumables, always read the label on its container carefully.
•Use the right toner. The applicable copier model name is indicated on the Toner Bottle.
•Paper is apt to be easily damaged by dampness. To prevent absorption of moisture,
store paper, which has been removed from its wrapper but not loaded into the Drawer, in
a sealed plastic bag in a cool, dark place.
•Keep consumables out of the reach of children.
•Do not touch the PC Drum with bare hands.
•Store the paper, toner, and other consumables in a place free from direct sunlight and
away from any heating apparatus.
•The same sized paper is of two kinds, short grain and long grain. Short grain paper
should only be fed through the copier crosswise, long grain paper should only be fed
lengthwise.
•If your hands become soiled with toner, wash them with soap and water immediately.
•Do not throw away any used consumables (PC Drum, starter, toner,etc.). They are to be
collected.
NOTE
Do not burn, bury in the ground, or throw into the water any consumables (PC Drum,
starter, toner, etc.).
1154SBG0600A
The Printerhead of this copier uses a laser diode that emits a laser beam. Use the following
precautions when performing service jobs at the users’ premises.
•When a service job needs to be performed in the laser beam path, such as when working
around the printerhead and PC Drum, be sure first to turn the copier OFF.
•If the job requires that the power cord be left plugged in, observe the following precau-
tions
1. Take off your watch, ring, and any other reflective object and wear laser protective gog-
gles.
2. At the job site, select a place that is as far as possible away from the users and that is
enclosed by walls.
3. Do not bring a highly reflective tool into the laser beam path during the service job.
5HANDLING OF THE CONSUMABLES
6OTHER PRECAUTIONS

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-12
1154SBG0700A
7SYSTEM OPTIONS
1. Data Terminal DT-104 6. Editor Board E-2M
2. Plug-In Counter 7. Large Capacity Cassette C-101
3. Duplexing Document Feeder AFR-12 8. Duplex Unit AD-7
4. Data Controller D-102 9. 10 Bin Sorter S-105
5. Editor Display E-2D 10. 10 Bin Staple Sorter ST-103
1145M035AA
12
4
1138O525AA
1144O184AA
9, 10
1139O0020A
3
5
8
1144M172AB
1151O007AA
1144O642AA
4467U008AA
6
1144O003AB
7
1154O028AA

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
G-13
1154SBG0800A
•The CF910 Copier is a digital full-color copier positioned as the successor to CF900 and
intended for 100% customer satisfaction through the “CS-color technologies” that offer
enhanced image quality, greater reliability, and better operability.
•It offers even more enhanced image quality than CF900 could, has a built-in controller,
and is priced low to gain a competitive edge in the market for greater sales.
1. High-quality image reproduction
•Employs the “New Screen LIMOS” developed from the conventional “Screen LIMOS.”
•Employs an image stabilization control system using high-speed computing capabilities.
•Includes an automatic gradation correction function.
•Capable of reproducing text and photo and other gradation elements separately.
2. Greater ease of operation
•Employs a touch panel display.
•Equipped with two image quality adjustment modes, “Color Adjust Mode (Basic)” and
“Color Adjust Mode (Professional).”
•Provided with an image quality monitor function.
•Employs several automatic functions, including Auto Color Selection (ACS), Auto Expo-
sure, and original size detection.
•Includes a job programming function.
3. Higher productivity
•Postcards can be fed through the copier.
•Permits a fast copying speed of 6 full-color copies/min. (A4 crosswise) and 23 mono-
chrome copies/min. (A4 crosswise).
•A maximum of 2,300 sheets of paper can be fed from a total of five different paper
sources.
4. Environmental consciousness
•Its body is built compact to require only a 826×765mm space for installation.
•Realizes an outstanding quietness of 53.6 dB.
5. Better serviceability
•Easier replacement of ROMs thanks to the flash memory card.
8HIGHLIGHTS

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
M-1
1154SBM0100A
•The illustration below shows where different parts of the copier are placed and how the
copy paper moves through the copier.
•Each of the mechanical and electrical parts is identified and located in the relevant sec-
tion that appears later in this manual.
1CROSS-SECTIONAL VIEW AND PAPER PATH
ST-103/
S-105
AD-7
Fusing Unit
IR
PH Unit
(Upper)
Transfer
Unit
PC Unit
PH Unit
(Lower)
Developing
Unit
Upper
Drawer
Middle
Drawer
Lower
Drawer
1154M018AF

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
M-2
1154SBM0200A
2COPY PROCESS
3. Photoelectric
Conversion 4. IR Image Processing
5. PH Image
Processing
6. Laser
Exposure
17. Cleaning
1. PC Drum
18. Main Erase
2. PC Drum
Charging
7. Developing
8. Pre-Image
Transfer Erase
12. Image
Transfer
13. Paper
Separation
Transfer Drum
15. Toner Cleaning
16. Charge
Neutralizing
11. Attraction
10. Manual
Feed
20. Paper Exit 19. Fusing
14. Oil Cleaning
Upper Drawer
Middle Drawer
Lower Drawer
9. Paper
Feeding
1154M083AA

FrameMaker Ver5.5E (PC) CF910 GENERAL MECHANICAL/ELECTRICAL
98.03.13
M-3
1. PC Drum
•An electrostatic latent image is formed on the surface of a photoconductive material that
coats an aluminum cylinder.
•An OPC type photoconductor is used. (For details, see p. M-16.)
2. PC Drum Charging
A single-wire PC Drum Charge Corona employing the Scorotron system deposits a nega-
tive DC charge across the entire surface of the PC Drum. (For details, see p. M-19.)
3. Photoelectric Conversion
•The lightfrom Exposure Lamp LA1 is directed onto the original and reflected to strike the
CCD Sensor through mirrors and lens, thereby forming a reduced image of the original.
•The CCD Sensor separates the light striking it into different colors using its color filters
(R, G, and B), then converts it into a corresponding electrical signal and outputs the sig-
nal to the IR Image Processing Unit. (For details, see p. M-23.)
4. IR Image Processing
The electrical signal output from the Photoelectric Converter is converted to 8-bit digital
image signals (R, G, and B). After making some corrections, the IR Image Processing Unit
outputs video signals (C, M, Y, and Bk) to the PH Image Processing Unit. (For details, see
p. M-23.)
5. PH Image Processing
The video signals (C, M, Y, and Bk) output from the IR Image Processing Unit go through
some corrections. Following digital-to-analog conversion, these signals are then used for
the control of the intensity level of the laser diode (LD1). (For details, see p. M-43.)
6. Laser Exposure
The laser beam emitted bythe laserdiode (LD1)strikes the surfaceofthe PC Drum to form
an electrostatic latent image. (For details, see p. M-45.)
7. Developing
•The toner, agitated and negatively charged in the developing unit of each color, is
attracted onto the electrostatic latent image formed on the surface of the PC Drum,
changing it to a visible, developed image.
•AC and DC negative bias voltages are applied to the Sleeve/Magnet Roller to ensure
toner transfer to the PC Drum. (For details, see p. M-53.)
8. Pre-Image Transfer Erase
Light from Auxiliary Erase Lamp UN21 strikes the surface of the PC Drum to improve
image transfer efficiency and, at the same time, to neutralize negative charge on those
areas to which toner is not attracted. (For details, see p. M-54.)
9. Paper Feeding
Paper is fed from each drawer. (For details, see p. M-74.)
10. Manual Paper Feeding
The paper loaded in the Multi Bypass Table is fed. (For details, see p. M-78.)