Minolta Di151 User manual

FrameMaker Ver5.5E(PC) COVER [GENERAL] FOR Di151
00.03.14 FrameMaker Ver5.5E(PC) COVER [GENERAL] FOR Di151 00.03.14
Copyright
2000 MINOLTA Co., Ltd.
Printed in Japan
Use ofthis manual should
be strictly supervised to
avoid disclosure of
confidential information.
MINOLTA Co., Ltd. 4007-7990-11 00051800
14413
Di151
SERVICE MANUAL
[GENERAL]
Di151 SERVICE MANUAL [GENERAL]

FrameMaker Ver5.5E(PC) Di151
00.03.14
INDEX (GENERAL)
GENERAL
MECHANICAL/ELECTRICAL

FrameMaker Ver5.5E(PC) Di151 GENERAL
00.03.06
GENERAL
14413

FrameMaker Ver5.5E(PC) Di151 GENERAL
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i
CONTENTS
1. SAFETY INFORMATION .................................................................................G-1
2. SPECIFICATION .............................................................................................G-7
3. PRECAUTIONS FOR INSTALLATION ............................................................G-9
3-1. Installation Site ........................................................................................G-9
3-2. Power Source ..........................................................................................G-9
3-3. Grounding ................................................................................................G-9
4. PRECAUTIONS FOR USE ..............................................................................G-10
4-1. To ensure that the copier is used in an optimum condition .....................G-10
4-2. Operating Environment ............................................................................G-10
4-3. Power Requirements ...............................................................................G-10
4-4. Note .........................................................................................................G-10
5. HANDLING OF CONSUMABLES ....................................................................G-11
6. OTHER PRECAUTIONS .................................................................................G-12
7. SYSTEM OPTIONS .........................................................................................G-13

FrameMaker Ver5.5E(PC) Di151 GENERAL
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1. SAFETY INFORMATION
Laser Safety
This is a digital machine which prints by means of a laser. There is no possibility of danger
from the laser, provided the machine is operated according to the instructions in this man-
ual.
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 machine is certified as a Class 1 product. This means the machine does not produce
hazardous laser radiation.
Internal Laser Radiation
Maximum Average Radiation Power: 5.0 mW at laser aperture of the print head unit
Wavelength: 770-795 nm
This product employs a Class IIIb Laser Diode that emits an invisible laser beam.
The Laser Diode and Scanning Polygon Mirror are incorporated in the print head unit.
The print head unit is NOT A FIELD SERVICE ITEM.
Therefore, the print head unit should not be opened under any circumstances.
For United States
CDRH regulation
This copier is certified as a Class 1 Laser product under the Radiation Performance Stan-
dard according to the Food, Drug and Cosmetic Act of 1990. Compliance is mandatory for
Laser products marketed in the UnitedStates and is reported to the Center for Devices and
Radiological Health (CDRH) of the U.S. Food and Drug Administration of the U.S. Depart-
ment of Health and Human Services (DHHS). This means that the device 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.

FrameMaker Ver5.5E(PC) Di151 GENERAL
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The label shown on page G-3 indicates compliance with the CDRH regulations and must
be attached to laser products marketed in the United States.
This is a semiconductor laser. The maximum power of the laser diode is 5 mW and the
wavelength is 770-795 nm.
For Europe
For Denmark
For Finland
For Sweden
CAUTION: Use of controls, adjustments or performance of procedures other than those
specified in this manual may result in hazardous radiation exposure.
CAUTION: 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 5 mW and the
wavelength is 770-795 nm.
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
Klasse 1 laser produkt der opfylder IEC60825 sikkerheds kravene.
LUOKAN 1 LASERLAITE
VAROITUS
Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa
käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.
VARO
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättomälle lasersäteilylle. Älä
katso säteeseen.
KLASS 1 LASER APPARAT
VARNING
Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan
användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.
VARNING
Osynlig laserstråining när denna del är öppnad och spärren är urkopplad. Betrakta ej
stråien.

FrameMaker Ver5.5E(PC) Di151 GENERAL
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For Norway
Laser Safety Label
A laser safety label is attached to the outside of the copy machine as shown below.
The Manufacturer’s Name Plate is affixed at the position illustrated above.
Please write down the Model Name and Serial No. of your copier here.
ADVERSEL
Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan
brukeren utsettes för unsynlig laserstrålning, som overskrider grensen for laser klass 1.
Dette en halveder laser. Maksimal effekt till laserdiode er 5 mW og bφlgelengde er 770-
795 nm.
Model:
Serial No.:
Laser safety label
Manufacturer’s
Name Plate
CLASS 1 LASER PRODUCT
LASER KLASSE 1 PRODUKT
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
For Europe
For United States
1166O248AA
1166O252BA
C4007O155CB

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Label inside copy machine
The following laser safety label will be attached inside the copy machine as shown below.
Please read the following for your own protection.
Opening the cover indicated by the Caution label may expose you to harmfullaser radiation
which could cause damage or loss of eyesight. Do not open the cover when the power is
on.
Caution
Print Head
C4007O160CA
1167P001AA

FrameMaker Ver5.5E(PC) Di151 GENERAL
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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.

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ALL Areas CAUTION
“Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used IC Package according to the manufacturer’s instructions.”
Germany only VORSICHT!
⇒”Austausch nur durch denselben oder einen vom Hersteller empfohlenen, gleichwertigen
typ. Entsorgung gebrauchter Batterien nach Angaben des Herstellers.

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2. SPECIFICATIONS
COPY MEDIUM
CONTINUOUS COPY SPEED (copies/min)
TYPE
ORIGINAL SCANNING SYSTEM
PHOTOCONDUCTOR
COPYING SYSTEM
RESOLUTION
PAPER FEEDING SYSTEM
EXPOSURE SYSTEM
DEVELOPING SYSTEM
CHARGING SYSTEM
IMAGE TRANSFER SYSTEM
PAPER SEPARATING SYSTEM
FUSING SYSTEM
PAPER DISCHARGING SYSTEM
MAXIMUM ORIGINAL SIZE
:
:
:
:
:
:
:
:
:
:
:
:
:
:
Desktop
CCD Line Sensor
Organic Photoconductor
ElectrostaticDry PowderedImage Transfer to Plain
Paper
600 x 600dpi
2-Way system Paper Tray
Manual Bypass Tray
CCD Scanning
Fine Micro-Toning System
Rotating Charge Brush
Image Transfer Roller
Paper Separator Finger
Heat Roller
Charge Neutralizing Brush
Metric-216 x 356 mm; Inch-8-1/2 x 14
Paper Tray Manual Bypass Tray
Medium
Plain Paper
(60 to 90 g/m2, 16 to24 lb) ❍❍
Translucent paper – ❍
Transparencies – ❍
Thick paper
(90 to 163 g/m2, 24 to 43-1/4 lb) –❍
Recycled paper ❍❍
Dimensions
Maximum
(Width x Length) 210 x 297 mm 8-1/2 x 14 216 x 356 mm 8-1/2 x 14
Minimum
(Width x Length) 148 x 210 mm 5-1/2 x 8-1/2 128 x 182 mm 5 x 7-1/4
MULTIPLE COPIES
WARM-UP TIME
FIRST COPY TIME
:
:
:
1 to 100
28 s or less with room temperature of
23 °C/73 °F and rated power voltage
11.0 s or less (A4L / 8-1/2 x 11)
Zoom Ratio
Size 100%
A4L 15
8-1/2 x 11 15

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ZOOM RATIOS
POWER/CURRENT CONSUMPTION (copier only)
ENVIRONMENTAL CONDITIONS
Fixed
Area
Mode Metric Inch
Full Size 100 % 100 %
Reduction 81 %
70 % 78 % 64 %
Enlargement 115 %
141 % 129 % 154 %
Variable 50 % to 199 % (in 0.1 % increments)
LENS
EXPOSURE LAMP
FUSING TEMPERATURE
:
:
:
Through Lens
Cold-cathode discharge tube
210 °C / 410 °F
Voltage Exposure Lamp
(Rating) Fusing Heater Lamp (Rating) Max. Power Consumption
115 V
12 V
5.4 W
120 V
650 W
680 W
120 V 715 W
127 V 770 W
220 V 220/240 V
650 W 670 W
240 V 750 W
POWER REQUIREMENTS : 115 V, 120 V, 127 V, 220-240 V; 50/60 Hz
Temperature 10-30 °C (50-86 °F) with a fluctuation of up to 10 °C (18 °F) per hour.
Humidity 15-85 % (Relative Humidity) with a fluctuation of up to 20 % per hour.
Ambient
Illumination 3,000 lx or less
Levelness 1° or less
COPIER DIMENSIONS
COPIER WEIGHT
:
:
Width.....562 mm (22-1/4)
Depth.....530 mm (20-3/4)
Heigth.....442 mm (17-1/2)
28.1 kg (62 lb)

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3. PRECAUTIONS FOR INSTALLATION
3-1. Installation Site
To ensure safetyand utmost performance of the copier, the copier should NOT be used in a
place:
• Where it will be subjected to extremelyhigh or low temperature or humidity.
• Where it will be subjected to sudden fluctuations in either temperature or humidity.
• Which is exposed to direct sunlight.
• Which is in the direct air stream of an air conditioner, heater, or ventilator.
• Which has poor ventilation or is dusty.
• Which does not have a stable, level floor or where it will receive undue vibration.
• Which is near any kind of heating device.
• Which is near volatile flammables (thinner, gasoline, etc.).
• Where it may be splashed with water.
• Which puts the operator in the direct stream of exhaust from the copier.
• Where ammonia gas might be generated.
3-2. Power Source
• 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 by means of a multiple socket any other appliances or machines to the
outlet being used for the copier.
• Ensure that the copier does not ride on the power cord or communication cableof other
electrical equipment, and that it doesnot become wedged into or underneath the mecha-
nism.
• 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?
Use an outlet with a capacity of 115/120/127 V or 220-240 V.
3-3. Grounding
• Always ground the copier to prevent receiving electrical shocks in the case of electrical
leakage.
• Connect the ground wire to the ground terminal of the outlet or a grounding contact which
complies with the local electrical standards.
• Never connect the ground wire to a gas pipe, the ground wire for a telephone, lightning
arrester, or a water pipe for fear of fire and electrical shock.

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4. PRECAUTIONS FOR USE
4-1. To ensure that the copier is used in an optimum condition
• 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 copier while it 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 ONthe powerswitch 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.
4-2. Operating Environment
The operating environmental requirements of the copier are as follows.
• Temperature: 10 to 30 °C (50 to 86 °F)
• Humidity: 15 to 85 %
• Rate of temperature change: 10 °C (18 °F)/h
• Rate of humidity change: 10 %/h
4-3. Power Requirements
The power source voltage requirements are as follows.
• Voltage fluctuation: AC115/120/127/220-240
±10 % (copying performance assured)
(paper feeding performance assured)
• Frequency fluctuation: 50/60 Hz ±0.3 %
4-4. Note
• It is prohibited to copy paper and hard currencies, government securities, and municipal
bonds (even when they are stamped as “Sample”).
• For fear of infringement of copyright, it is also prohibited to copy copyrighted works,
including books, music, works of art, maps, drawings, motion pictures, and photos except
when the copy is to be used only personally.
+10 %
-15 %

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5. HANDLING OF CONSUMABLES
Before using any consumables, always read the label on its container carefully.
• Paper can be easily damaged by dampness. To prevent absorption of moisture, store
paper, which has been removed from its wrapper but not loaded in 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.
• 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.
• Do not throw away any used consumables(PC Drum, starter, toner, etc.). They are to be
collected.
• Do not burn, bury in the ground, or throw into the water any consumables (PC Drum,
starter, toner, etc.).
• Do not store consumables in a placewhich:
✽Is hot and humid.
✽Is subject to direct sunlight.
✽Has an open flame nearby.

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6. OTHER PRECAUTIONS
Use the following precautions when performing service jobs for a copier that uses a laser.
• When a service jobneedsto be performed inthe laser beampath, such as whenworking
around the printerhead or PC Drum, be sure first to unplug the power cord of the copier
from the outlet.
• 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. Keep users away from the job site.
3. Do not bring a highly reflective tool into the laser beam path during the service job.

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7. SYSTEM OPTIONS
5
4
1
3
2
6
C4007O92CA C4007O91CA
4007M037AA
4007M032AA
C4007O94CA
4007M035AB
C4007O093CA
1. Automatic Document Feeder AF-8
2. Original Cover (Except Europe)
3. Printer Controller Pi1501
4. Memory for Copier (16MB/32MB)
5. Paper Feed Unit PF-116
6. Fax Unit for Di151

FrameMaker Ver5.5E(PC) Di151 MECHANICAL/ELECTRICAL
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MECHANICAL/
ELECTRICAL
14413

FrameMaker Ver5.5E(PC) Di151 MECHANICAL/ELECTRICAL
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i
CONTENTS
1. CROSS SECTIONAL VIEW ............................................................................M-1
2. COPY PROCESS ............................................................................................M-2
3. DRIVE SYSTEM ..............................................................................................M-4
4. SEQUENTIAL EXPLANATION ........................................................................M-5
5. PC DRUM SECTION .......................................................................................M-6
5-1. PC Drum Drive Mechanism .....................................................................M-6
5-2. Grounding of the PC Drum ......................................................................M-7
6. PC DRUM CHARGING SECTION ...................................................................M-8
7. IMAGE READING SECTION ...........................................................................M-9
7-1. Exposure Components Section ...............................................................M-10
7-2. Exposure Lamp Control ...........................................................................M-11
7-3. Image Processing Process ......................................................................M-12
7-4. Scanner Movement Mechanism ..............................................................M-14
7-5. Scanner Motor Drive Control ...................................................................M-15
8. PH SECTION ...................................................................................................M-16
8-1. Laser Exposure Process ..........................................................................M-17
8-2. Laser Emission Area (HIA and VIA Signals) ............................................M-18
9. DEVELOPING UNIT SECTION .......................................................................M-19
9-1. Developing Unit Drive Mechanism ...........................................................M-20
9-2. Sleeve Roller ...........................................................................................M-20
9-3. Developing Bias .......................................................................................M-21
9-4. Toner Empty Detection ............................................................................M-22
10. PAPER TAKE-UP/FEEDING SECTION ..........................................................M-23
10-1.Paper Empty Detection Mechanism ........................................................M-24
10-2.Paper Lifting Mechanism .........................................................................M-25
10-3.Paper Take-Up Mechanism .....................................................................M-26
10-4.Paper Take-Up Control ............................................................................M-26
(1) Paper Take-Up Retry Control ..........................................................M-27
11. PC DRUM CLEANING SECTION ....................................................................M-28
12. IMAGE TRANSFER SECTION ........................................................................M-29
13. FUSING UNIT SECTION .................................................................................M-30
13-1.Fusing Unit Drive Mechanism ..................................................................M-31
13-2.Fusing Rollers Pressure Mechanism .......................................................M-32
13-3.Fusing Temperature Control ....................................................................M-33
(1) Fusing Temperature Control during continuous small-size paper feeding
M-34
13-4.Mechanism and Control of Fusing Roller Small-Amount Turning ............M-34
14. OTHER MECHANISMS ...................................................................................M-35
14-1.Memory Backup .......................................................................................M-35
14-2.Cooling Mechanism .................................................................................M-36
(1) PH Section Cooling Mechanism ......................................................M-36
(2) Fusing Section Cooling Mechanism ................................................M-37

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1. CROSS SECTIONAL VIEW
1
2
3
4
5
4007M001AB
1. IR Section
2. Fusing Unit
3. I/C
4. Paper Tray
5. PH Section