Sharp AR-235 (serv.man7) Service Manual ▷ View online
SERVICE MANUAL
CODE: 00ZAR275//A1E
DIGITAL LASER COPIER/
PRINTER
PRINTER
AR-235
MODEL
AR-275
CONTENTS
[1] NOTE FOR SERVICING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] SYSTEM CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
[3] SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
[4] CONSUMABLE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
[5] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 5-1
[6] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . . 6-1
[7] ADJUSTMENTS, SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
[8] SIMULATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
[9] TROUBLE CODE LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
[10] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 10-1
[11] OTHERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
Parts marked with “
” are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
SHARP CORPORATION
This product is a class 1 laser product that complies with 21CFR 1040.10 and 1040.11 of the CDRH standard and IEC825. This means that this
machine does not produce hazardous laser radiation. The use of controls, adjustments or performance of procedures other than those specified
herein may result in hazardous radiation exposure.
This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved on the eye’s retina, there is the danger of spot
damage to the retina.
The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of servicing.
1) When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a unit, not as individual parts.
2) Do not look into the machine with the main switch turned on after removing the developer unit, toner cartridge, and drum cartridge.
3) Do not look into the laser beam exposure slit of the laser optical unit with the connector connected when removing and installing the optical
machine does not produce hazardous laser radiation. The use of controls, adjustments or performance of procedures other than those specified
herein may result in hazardous radiation exposure.
This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved on the eye’s retina, there is the danger of spot
damage to the retina.
The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of servicing.
1) When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a unit, not as individual parts.
2) Do not look into the machine with the main switch turned on after removing the developer unit, toner cartridge, and drum cartridge.
3) Do not look into the laser beam exposure slit of the laser optical unit with the connector connected when removing and installing the optical
system.
4) The middle frame contains the safety interlock switch.
Do not defeat the safety interlock by inserting wedges or other items into the switch slot.
CAUTION
Warning!
This product is a class A product.
If it is operated in households, offices or similar surroundings, it can produce radio interferences at other
appliances, so that the user has to take adequate countermeasures.
This product is a class A product.
If it is operated in households, offices or similar surroundings, it can produce radio interferences at other
appliances, so that the user has to take adequate countermeasures.
CLASS 1 LASER PRODUCT
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
VAROITUS!
LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE
LASERSÄTEILYLLE.
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE
LASERSÄTEILYLLE.
VARNING
OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I
DENNA BRUKSANVISNING SPECIFICERATS, KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG
LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN
FÖR LASERKLASS 1.
DENNA BRUKSANVISNING SPECIFICERATS, KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG
LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN
FÖR LASERKLASS 1.
CAUTION
INVISIBLE LASER RADIATION,
WHEN OPEN AND INTERLOCKS DEFEATED. AVOID
EXPOSURE TO BEAM.
VORSICHT
UNSICHTBARE LASERSTRAHLUNG,
WENN ABDECKUNG GEÖFFNET UND
SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT. NICHT
DEM STRAHL AUSSETZEN.
VARO !
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET
ALTTIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE ÄLÄ
KATSO SÄTEESEEN.
ADVARSEL
USYNLIG LASERSTRÅLNING VED ÅBNING, NÅR
SIKKERHEDSBRYDERE ER UDE AF
FUNKTION. UNDGÅ UDSAETTELSE FOR
STRÅLNING.
VARNING !
OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR
ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ
STRÅLEN. – STRÅLEN ÄR FARLIG.
CLASS 1
LASER PRODUCT
LASER KLASSE 1
Disconnect the AC cord before servicing the unit.
LASER WAVE – LENGTH : 795 ± 15 mm
Pulse times : 0.481 ms/6 mm
Out put power : 5 mW
CAUTION
VORSICHT
ADVARSEL
VORSICHT
ADVARSEL
ADVERSEL
VARNING
VARO!
VARNING
VARO!
INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED.
AVOID EXPOSURE TO BEAM.
AVOID EXPOSURE TO BEAM.
UNSICHTBARE LASERSTRAHLUNG, WENN ABDECKUNG GEÖFFNET UND
SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
USYNLIG LASERSTRÅLNING VED ÅBNING, NÅR SIKKERHEDSBRYDERE ER
UDE AF FUNKTION. UNDGÅ UDSAETTELSE FOR STRÅLNING.
UDE AF FUNKTION. UNDGÅ UDSAETTELSE FOR STRÅLNING.
USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG SIKKERHEDSLÅS BRYTES.
UNNGÅ EKSPONERING FOR STRÅLEN.
UNNGÅ EKSPONERING FOR STRÅLEN.
OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR
URKOPPLAD. BETRAKTA EJ STRÅLEN. – STRÅLEN ÄR FARLIG.
URKOPPLAD. BETRAKTA EJ STRÅLEN. – STRÅLEN ÄR FARLIG.
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE
LASERSÄTEILYLLE ÄLÄ KATSO SÄTEESEEN.
LASERSÄTEILYLLE ÄLÄ KATSO SÄTEESEEN.
Laserstrahl
CONTENTS
[1] NOTE FOR SERVICING
1. Warning for servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2. Precautions for servicing . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
3. Note for installing site. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] SYSTEM CONFIGURATION
1. Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
A. Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2. System outline (Options) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
[3] SPECIFICATIONS
1. Basic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
2. Operation specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
A. Common operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
B. Copy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3. Engine specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
A. Operation and display section . . . . . . . . . . . . . . . . . . . 3-2
B. Paper feed, transport, paper exit section . . . . . . . . . . . 3-2
C. Optical (Image scanning) section . . . . . . . . . . . . . . . . . 3-3
D. Scanner (exposure) section . . . . . . . . . . . . . . . . . . . . . 3-3
E. Image process section . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
F. Fusing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
G. DRIVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
4. Safety and environmental protection standards. . . . . . . . . 3-4
5. Environment conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
[4] CONSUMABLE PARTS
1. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
A. SEC/LAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
B. SECL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
C. Europe affiliates/East Europe/SEEG/SUK/SCA/
SCNZ/SEA/SEES/SEZ/SEIS/SEB/SEN/SEF/SMEF/
Russia/Middle East/Africa/CIS . . . . . . . . . . . . . . . . . . . 4-3
Russia/Middle East/Africa/CIS . . . . . . . . . . . . . . . . . . . 4-3
D. Special country/Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
E. Asia affiliates /Asia agent/STCL/SRH/SRS/SRSSC/
SBI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
2. Production number identification . . . . . . . . . . . . . . . . . . . . 4-6
3. Environment conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
A. Ambient conditions for transporting . . . . . . . . . . . . . . . 4-6
B. Ambient storage conditions (sealed) . . . . . . . . . . . . . . 4-6
C. Operating ambient conditions. . . . . . . . . . . . . . . . . . . . 4-6
4. Life (packed conditions) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
[5] UNPACKING AND INSTALLATION
1. Removal of protective material and fixing screw . . . . . . . . 5-1
2. Removal and storage of fixing pin . . . . . . . . . . . . . . . . . . . 5-1
3. Developer cartridge installation . . . . . . . . . . . . . . . . . . . . . 5-1
4. Toner cartridge installation . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5. Toner concentration sensor level adjustment. . . . . . . . . . . 5-2
6. Paper size selection for paper feed tray . . . . . . . . . . . . . . 5-2
[6] EXTERNAL VIEW AND INTERNAL STRUCTURE
1. External view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
2. Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
3. Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
A. Key position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
B. LCD panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
4. Motor, Solenoid, Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
5. Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6. PWB unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
7. Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
[7] ADJUSTMENTS, SETTING
1. List of adjustment items . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
2. Copier adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
A. Process section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
B. Mechanism section . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
C. Image density (exposure) adjustment . . . . . . . . . . . . . .7-9
[8] SIMULATION
1. Operating procedures and operations . . . . . . . . . . . . . . . .8-1
A. Basic operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
B. Simulation kinds and valid key functions . . . . . . . . . . . .8-1
C. Simulation operation and procedure basic pattern . . . .8-2
2. Simulation code list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
3. Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5
[9] TROUBLE CODE LIST
1. List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
2. Self diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
[10] DISASSEMBLY, ASSEMBLY AND MAINTENANCE
1. Maintenance table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
2. Counter clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
3. List of disassembly and assembly . . . . . . . . . . . . . . . . . .10-1
4. Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
A. Process unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
B. Developing section . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
C. Fusing section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-4
D. Paper feed section. . . . . . . . . . . . . . . . . . . . . . . . . . . .10-6
E. Side door unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-10
F. 1st paper exit unit . . . . . . . . . . . . . . . . . . . . . . . . . . .10-10
G. Laser unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12
H. Power unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-13
I.
PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-13
J. Ozone filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-15
[11] OTHERS
1. Flash ROM version up procedure . . . . . . . . . . . . . . . . . . .11-1
A. Program download procedure
(Main body program, FAX program) . . . . . . . . . . . . . .11-1
2. User programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2
3. E-MAIL STATUS/E-MAIL ALERTS . . . . . . . . . . . . . . . . . .11-3
A. Basic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3
B. Main body specifications . . . . . . . . . . . . . . . . . . . . . . .11-3
C. Printer controller specifications . . . . . . . . . . . . . . . . . .11-3
D. Handling of transmission data . . . . . . . . . . . . . . . . . . .11-3
AR-235/275 NOTE FOR SERVICING - 1
[1] NOTE FOR SERVICING
This Service Manual uses some photographs to assure safe operation.
This Service Manual uses some photographs to assure safe operation.
Please understand the meanings of photographs before servicing.
Please understand the meanings of photographs before servicing.
1. Warning for servicing
1) Be sure to connect the power cord only to a power outlet that
meets the specified voltage and current requirements.
Avoid complex wiring, which may lead to a fire or an electric shock.
It may cause a fire or an electric shock.
2) If there is any abnormality such as a smoke or an abnormal smell,
interrupt the job and disconnect the power plug.
It may cause a fire or an electric shock.
3) Be sure to connect the grounding wire. If an electric leakage
occurs without grounding, a fire or an electric shock may be the
result.
result.
To protect the machine and the power unit from lightening, ground-
ing must be made.
ing must be made.
4) When connecting the grounding wire, never connect it to the fol-
lowing points.
It may cause an explosion, a fire or an electric shock.
• Gas tube
• Lightning conductor
• A water pipe or a water faucet, which is not recognized as a
grounding object by the authorities.
• Grounding wire for telephone line
5) Do not damage, brake, or work the power cord.
Do not put heavy objects on the power cable. Do not bend it forc-
ibly or do not pull it extremely.
ibly or do not pull it extremely.
It may cause a fire or an electric shock.
6) Keep the power cable away from a heat source.
Do not insert the power plug with dust on it into a power outlet.
It may cause a fire or an electric shock.
7) Do not put a receptacle with water in it or a metal piece which may
drop inside the machine.
It may cause a fire or an electric shock.
8) With wet or oily hands, do not touch the power plug, do not insert
the telephone line jack, do not operate the machine, or do not per-
form servicing.
form servicing.
It may cause an electric shock.
2. Precautions for servicing
1) When servicing, disconnect the power plug, the printer cable, the
network cable, and the telephone line from the machine, except
when performing the communication test, etc.
when performing the communication test, etc.
It may cause an injury or an electric shock.
2) There is a high temperature area inside the machine. Use an
extreme care when servicing.
It may cause a burn.
3) There is a high voltage section inside the machine which may
cause an electric shock . Be careful when servicing.
4) Do not disassemble the laser unit. Do not insert a reflective mate-
rial such as a screwdriver in the laser beam path.
It may damage eyes by reflection of laser beams.
5) When servicing with the machine operating, be careful not to
squeeze you hands by the chain, the belt, the gear, and other driv-
ing sections.
ing sections.
6) Do not leave the machine with the cabinet disassembled.
Do not allow any person other than a serviceman to touch inside
the machine. It may cause an electric shock, a burn, or an injury.
the machine. It may cause an electric shock, a burn, or an injury.
7) When servicing, do not breathe toner, developer, and ink exces-
sively. Do not get them in the eyes.
If toner, developer, or ink enters you eyes, wash it away with water
immediately, and consult a doctor if necessary.
immediately, and consult a doctor if necessary.
8) The machine has got sharp edges inside. Be careful not to dam-
age fingers when servicing.
9) Do not throw toner or a toner cartridge in a fire. Otherwise, toner
may pop and burn you.
10) When replacing the lithium battery of the PWB, use a specified one
only.
If a battery of different specification is used, it may be broken,
causing breakdown or malfunction of the machine.
causing breakdown or malfunction of the machine.
11) When carrying a unit with PWB or electronic parts installed to it, be
sure to put it in an anti-static-electricity bag.
It may cause a breakdown or malfunctions.
3. Note for installing site
Do not install the machine at the following sites.
1) Place of high temperature, high humidity, low temperature, low
humidity, place under an extreme change in temperature and
humidity.
humidity.
Paper may get damp and form dews inside the machine, causing
paper jam or copy dirt.
paper jam or copy dirt.
For operating and storing conditions, refer to the specifications
described later.
described later.
2) Place of much vibrations
It may cause a breakdown.
3) Poorly ventilated place
An electro-static type copier will produce ozone inside it.
The quantity of ozone produced is designed to a low level so as
not to affect human bodies. However, continuous use of such a
machine may produce a smell of ozone. Install the machine in a
well ventilated place, and ventilate occasionally.
not to affect human bodies. However, continuous use of such a
machine may produce a smell of ozone. Install the machine in a
well ventilated place, and ventilate occasionally.
4) Place of direct sunlight.
Plastic parts and ink may be deformed, discolored, or may undergo
qualitative change.
qualitative change.
It may cause a breakdown or copy dirt.
5) Place which is full of organic gases such as ammonium
The organic photoconductor (OPC) drum used in the machine may
undergo qualitative change due to organic gases such as ammo-
nium.
undergo qualitative change due to organic gases such as ammo-
nium.
Installation of this machine near a diazo-type copier may result in
dirt copy.
dirt copy.
6) Place of much dust
When dusts enter the machine, it may cause a breakdown or copy
dirt.
dirt.
7) Place near a wall
Some machine require intake and exhaust of air.
If intake and exhaust of air are not properly performed, copy dirt or
a breakdown may be resulted.
a breakdown may be resulted.
8) Unstable or slant surface
If the machine drops or fall down, it may cause an injury or a break-
down.
down.
If there are optional paper desk and the copier desk specified, it is
recommendable to use them.
recommendable to use them.
When using the optional desk, be sure to fix the adjuster and lock
the casters.
the casters.
WARNING: If this WARNING should be ignored, a serious danger
to life or a serious injury would be resulted.
CAUTION: If this CAUTION should be ignored, an injury or a
damage to properties would be resulted.