Sharp UX-4000M - UX 4000 B/W Laser Printer User manual

UX-4000MU
FO-2950MU/C
No. 00ZUX4000USME
Parts marked with " " is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintain-
ing the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
SERVICE MANUAL
Laser Wave Length : 780 ±15 nm
Laser Pulse Times : (13.95 ±3 µs)/7mm
Laser Output Power : 0.4 mW ±0.05mW
Illustration: UX-4000M
CAUTION
This laser facsimile is a class 1 laser product that complies with 21CFR 1040.10 and 1040.11 of the CDRH or IEC60825-1 standard.
This means that this machine does not produce a 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 eyes retina, there is
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 an individual part.
2) Do not look into the machine with the main switch turned on after removing the toner/developer unit 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 cover of Laser Printer Unit contains the safety interlock switch.
Do not defeat the safety interlock by inserting wedges or other items into the switch slot.
FACSIMILE
UX-4000M
MODEL FO-2950M

UX-4000MU
FO-2950MU/C CONTENTS
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
[3] Transmittable documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
[4] Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
[5] Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
[6] Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
[7] Quick reference guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
CHAPTER 2. ADJUSTMENTS
[1] Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
[2] Diagnostics and service soft switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
[3] Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
[4] Error code table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
CHAPTER 3. MECHANICAL DESCRIPTION
[1] Mechanical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
[2] Disassembly, assembly, lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
CHAPTER 4. DIAGRAMS
[1] Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
[2] Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
[3] Point-to-point diagram and connector signal name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
[2] Circuit description of control PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
[3] Circuit description of TEL/LIU and Hook SW PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
[4] Circuit description of power supply PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
[5] Circuit description of CIS UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Control PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
[2] TEL/LIU and Hook SW PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
[3] Printer PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
[4] Power supply PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
[5] Operation panel PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
CHAPTER 7. OPERATION FLOWCHART
[1] Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
[2] Power on sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
CHAPTER 8. OTHERS
[1] Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
[2] IC signal name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
PARTS GUIDE
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CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications
• GENERAL
* BasedonITU-T(CCITT)Test Chart #1 at standard resolution in Sharp
special mode, excluding time for protocol signals (i.e., ITU-T phase C
time only).
<IMPORTANT PLEASE READ FIRST>
To avoid problems with supplies, please don’t use supplies from other units. Please use new supplies, when supply changes are required.
Automatic dialing Rapid Key Dialing: 20 numbers
Speed Dialing: 100 numbers
Memory size* 2 MB (approx. 130 pages)
Modem speed 14,400 bps (max.)
Automatic fallback to lower speeds.
Transmission time* Approx. 6 seconds
Toner cartridge yield Initial starter cartridge (included with
(4% page coverage, letter paper) fax machine): Approx. 1,875 pages
Replacement cartridge (UX-400ND):
Approx. 3,750 pages
Drum cartridge yield Initial starter cartridge (included with
fax machine): 20,000 pages (avg.)
Replacement cartridge (UX-400DR):
20,000 pages (avg.)
Scanning resolution Fax/copy:
Horizontal: 203 pels/inch (8 pels/mm)
Vertical:
Standard: 98 lines/inch (3.85 lines/mm)
Fine /Halftone: 196 lines/inch
(7.7 lines/mm)
Super fine: 391 lines/inch
(15.4 lines/mm)
PC: Enhanced 600 dpi
Automatic document 20 pages max. (20-lb. letter paper)
feeder
Halftone (grayscale) 64 levels (PC scan: 256 levels)
Paper tray capacity 200 sheets (20-lb. letter paper)
Compression scheme MMR, MR, MH
Applicable telephone line Public switched telephone network
Compatibility ITU-T (CCITT) G3 mode
Printing resolution Horizontal: 406 lines/inch (16 lines/mm)
Vertical: 391 lines/inch (15.4 lines/mm)
PC Printing: 600 dpi (enhanced 1,800 dpi)
Input document size Automatic feeding:
Width: 5.8 to 8.5" (148 to 216mm)
Length: 5.5 to 11" (140 to 279mm)
Manual feeding:
Width: 5.8 to 8.5" (148 to 216mm)
Length:5.5 to 39.4" mm (140 to 1,000mm)
Effective Scanning width 8.3" (210 mm) max.
Effective Printing width 8.0" (210 mm) max.
Reception modes Fax/Tel/A.M.
Scanning speed 8 ppm (letter paper)
Full Dual Access Yes
Copy function Single/Multi/Sort (99 copies/page)
Power requirements 120 V AC, 60 Hz
Operating temperature 50 - 86°F (10 - 30°C)
Humidity 20 to 85% RH
Power consumption Standby: 8.7 W
Maximum: 650 W
Dimensions Width: 15.2" (386 mm)
Depth: 15.7" (398 mm)
Height: 6.7" (169 mm)
Weight Approx.13.4lbs.(6.1kg)
Important:
• Thisfacsimile machine is not designed for use on a line whichhas call
waiting, call forwarding, or certain other special services offered by
your telephone company. If you attempt to use the fax machine in
conjunction with any of these services, you may experience errors
during transmission and reception of facsimile messages.
• This facsimile machine is not compatible with digital telephone sys-
tems.

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[2] Operation panel
1
2
3
4
5
6
7
8
9
10
11
SPEED DIAL key
Press this key to dial a fax or voice number using an
abbreviated 2 digit Speed Dial number.
REDIAL key
Press this key to automatically redial the last number dialed.
PAPER CHECK indicator
This lights when the paper tray is out of paper, the paper has
jammed, the printer compartment cover is open, or a paper
size error has occurred.
TONER EMPTY indicator
This blinks when the toner cartridge nears empty and lights
steadily when the toner cartridge needs replacement.
Display
This displays messages and prompts during operation and
programming.
Panel release
Grasp this release and pull toward you to open the operation
panel.
PC IN USE light
This blinks when data is being sent to or from the computer
connected to the fax machine.
LINE IN USE light
This lights when the fax machine is using the telephone line.
RECEPTION MODE key
Press this key to select the reception mode. An arrow in the
display will point to the currently selected reception mode.
FUNCTION key
Press this key to select special functions and settings.
RESOLUTION Keys
Press this key to adjust the resolution for faxing or copying.
VOLUME (UP/DOWN) keys
Press these keys to adjust the volume of the speaker when the
SPEAKER key has been pressed, the volume of the handset
when the handset is lifted, or the volume of the ringer at all
other times. The keys can also be used to scroll through
FUNCTION key settings.
12
SPEED
DIAL
REDIAL
SPEAKER
HOLD/
SEARCH
ABC 21 DEF 3
JKL 54 GHI MNO 6
TUV 87 PQRS WXYZ
9
0
PAPER
CHECK TONER
EMPTY PC IN USE LINE IN USE
REDUCTION/
ENLARGEMENT
COPY/HELP
START STOP
TEL FAX A.M. FUNCTION VOLUME
DOWN UP
RECEPTION
MODE
RESOLUTION BROADCAST
01 02 03 04
08070605
12111009
16/POLL
15
14
13
20/G419/G318/G217/G1
1 2 3 4 7 8 9 13
14151620 1921 171822
10 11 125 6
13
14
15
16
17
18
19
20
21
22
BROADCAST key
Press this key to send a document to a group of receiving fax
machines.
Rapid Dial Keys
Press one of these keys to dial a fax number automatically, or
send a document as an E-mail attachment to a preset E-mail
address.
E-MAIL key
Press this key to send a document as an E-mail attachment.
After you press the key, your specified E-mail program will
open to let you enter the E-mail address, a subject, and a
message if desired.
REDUCTION/ENLARGEMENT key
Press this key to select an enlargement or reduction setting
when making a copy of a document.
STOP key
Press this key to cancel an operation before it is completed.
START key
Press this key to begin transmission when using Speed Dialing,
Direct Keypad Dialing, or Normal Dialing.
COPY/HELP key
When a document is in the feeder, press this key to make a
copy of a document. At any other time, press this key to print
out the Help List, a quick reference guide to the operation of
your fax machine.
HOLD/SEARCH key
Press this key search for an auto-dial number, or, during a
phone conversation, press this key to put the other party on
hold.
SPEAKER key
Press this key to listen to the line and fax tones through the
speaker when faxing a document.
Note: this is not a speakerphone. You must pick up the
handset to talk with the other party.
Number Keys
Use these keys to dial numbers, and enter numbers and letters
when storing auto-dial numbers.
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[3] Transmittable documents
1. Document Sizes
* With special sizes, only one sheet can be fed into the machine at a
time. Insert next page into feeder as current page is being scanned.
2. Paper Thickness & Weight
3. Document Types
• Normal paper
Documents handwritten in pencil (No. 2 lead or softer), fountain pen,
ball point pen, or felt-tipped pen can be transmitted.
Documents of normal contrast duplicated by a copying machine can
also be transmitted.
• Diazo copy (blueprint)
Diazo copy documents of a normal contrast may be transmitted.
• Carbon copy
A carbon copy may be transmitted if its contrast is normal.
Normal size width 148 – 210 mm
length 128 – 297 mm
4. Cautions on Transmitting Documents
• Documents written in yellow, greenish yellow, or light blue ink cannot
be transmitted.
• Ink, glue, and correcting fluid on documents must be dry before the
documents can be transmitted.
• All clips, staples and pins must be removed from documents before
transmission.
• Patched (taped) documents should be copied first on a copier and
then the copies used for transmission.
• All documents should be fanned before insertion into the feeder to
prevent possible double feeds.
5. Automatic Document Feeder Capacity
Number of pages that can be placed into the feeder at anytime is as
follows:
Normal size: max. 20 sheets
Special size: single sheet only (manual feed)
NOTES: •If you need to send or copy more 20 pages, place the ad-
ditional pages and carefully in the feeder just before the
last page is scanned. Do not try to force them in, as this
may cause double-feeding or jamming.
•If your document consists of several large or thick pages
which must be loaded one at a time, insert each page into
the feeder as the previous page is being scanned. Insert
gently to prevent doublefeeding.
6. Readable Width & Length
The readable width and length of a document are slightly smaller than
the actual document size.
Note that characters or graphics outside the effective document scan-
ning range will not be read.
•Readable width
208 mm max.
•Readable length
This is the length of the document sent minus 0.2” (5 mm) from the top
and bottom edges.
Readable width
0.16" (4 mm) 0.16" (4 mm)
0.2" (5mm)
0.2"
(
5mm
)
Readable length
(Min.) (Max.)
letter
(Max.)
128 mm
279 mm 1.0 m
148 mm 216 mm
[
Normal size
]
216 mm
[
Special size
]
Product specifications
Indication Lower Limit Upper Limit
Weight Metric system 52g/m280g/m2
indication indication
Thickness Metric system 0.06mm 0.1mm
indication indication
Document Document size Minimum (148mm × 128mm)
size Range A4 (210mm × 297mm)
Letter (216mm × 279mm)
Legal (216mm × 356mm)
Number of Document size Minimum ~ Letter/A4 size 20sheets
ADF sheets Weight Legal 1 sheet
More than 90 kg
Below 135kg 1 sheet
Paper Kind Paper of fine quality/bond paper/
quality Kent paper
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[4] Installation
1. Site selection
Take the following points into considerationwhen selecting a site for this
model.
ENVIRONMENT
•The machine must be installed on a level surface.
•Keep the machine away from air conditioners, heaters, direct sun-
light, and dust.
•Provide easy access to the front, back, and sides of the machine. In
particular, keep the area in front of the machine clear, or the original
document may jam as it comes out after scanning.
•The temperature should be between 10°and 30°C (50°and 86°F).
•The humidity should be between 20% and 85% (without condensa-
tion).
ELECTRICITY
AC 120 V, 60 Hz, grounded (3-prong) AC outlet is required.
Caution!
•Connection to a power source other than that specified will cause
damage to the equipment and is not covered under the warranty.
•Ifyourareaexperiencesa high incidence oflightningorpowersurges,
we recommend that you install a surge protector for the power and
telephonelines.Surge protectors canbepurchasedat most telephone
speciality stores
TELEPHONE SOCKET
Astandard RJ11C telephone socket must be located near the machine.
This is the telephone socket commonly used in most homes and offices.
•Plugging the fax machine into a socket which is not an RJ11C socket
may result in damage to the machine or your telephone system. If
you do not know what kind of socket you have, or need to have one
installed, contact the telephone company.
If the machine is moved from a cold to a warm place...
If the machine is moved from a cold to a warm place, it is possible that
thereading glass may fog up, preventing proper scanningof documents
for transmission. To remove the fog, turn on the power and wait approxi-
mately 2 hours before using the machine.
The laser printer in your fax machine uses a toner cartridge and a
drum cartridge. The drum cartridge comes pre-installed, and the
toner cartridge must be installed.
• The drum cartridge can print approximately 20,000 letter-size
pages. When replacing the drum cartridge, use a Sharp
UX-400DR drum cartridge.
Follow the steps below to install the toner cartridge and prepare the
drum cartridge.
1 Grasp the print compartment cover at both sides as shown, and
pull up to open the cover.
•Caution! The fusing unit inside the print compartment becomes
very hot during operation. Do not touch the inside of the
compartment or the paper guide on the underside of the print
compartment cover.
2 The drum cartridge has been installed at the factory. Gently pull
the paper tab to remove the black sheet of protective paper from
the cartridge.
• Be careful not the tear the paper or leave any pieces of paper in
the machine.
The starter toner cartridge
included with your fax can
print approximately 1,875
letter-size pages st 4%
page coverage
When replacing the toner
cartridge, use a Sharp
UX-400ND toner cartridge.
One cartridge can print about
3,750 letter-size pages.
2. Installing the toner cartridges
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3
 Remove the new toner cartridge from its packaging. Shake the
cartridge side to side four or five times to distribute the tone
r
evenly within the cartridge.
Carefully remove the band and the cardboard packaging material
from the toner cartridge.
4
 Hold the toner cartridge by the handle with the stamped markings
on the cartridge facing upwards, and insert the cartridge into the
print compartment.
5
 Place your thumb on the center of the handle where it is marked
PUSH, and push the handle down and in so that the cartridge fits
into place.
6
 Close the print compartment cover, pressing down firmly on each
side to mack sure it is completely closed.
7
 Reset the toner counter by pressing the following keys:
8
 Reset the drum counter by pressing the following keys:
•Note: This setting is only necessary after you have replaced the
drum cartidge (not after replacing the toner cartridge).
9
FUNCTION
CLR TONER COUNT
PRESS START KEY
START
START
Display shows:
9
FUNCTION
CLR DRUM COUNT
PRESS START KEY
Display shows:
3. Replacing the drum cartridge
To maintain excellent printing quality, we recommend that you
replace the drum cartridge after 20,000 pages have been printed.
You can view the number of pages printed in the display by pressing
the following sequence of keys:
When finished, press the STOP key to return to the date and time
display.
Replace the drum cartridge with the following cartridge:
Sharp UX-400DR drum cartridge
1
 Grasp the print compartment cover at both sides as shown, and
pull up to open the cover.
•Caution! The fusing unit inside the print compartmt becomes
very hot during operation. Do not touch the inside of the
compartment or the paper guide on the underside of the print
compartment cover.
START
9
FUNCTION

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2
 Grasp the finger hold on the toner cartridge handle where it is
marked PUSH, and pull the handle out. Rehold the handle and
pull the toner cartridge out of the compartment.
• Place the toner cartridge on a sheet of paper on a level surface.
3
 Grasp the tabs on the drum cartridge handle and gently pull the
cartridge out of the machine.
4
 Remove the new drum cartridge from its packaging.
5
 Insert the drum cartridge into the print compartment, aligning the
guides on the cartridge with the runners on the sides of the com-
partment.
6
 Gently pull the paper tab to remove the black sheet of protective
paper from the drum cartridge.
• Be careful not the tear the paper or leave any pieces of paper in
the machine
7
 Replace the toner cartridge and reset the drum counter. (Refer to
Installing the Toner Cartridge .)
4. Connections
1
 Connecting the Handset
Connect the handset as shown and place it on the handset rest.
• The ends of the handset cord are identical, so they will go into
either jack.
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2
 Connecting the power cord
Plug the power cord into a 120 V, 60 Hz, grounded AC (3-prong)
outlet.
• Caution! Do not plug the power cord into any other kind of outlet.
This will damage the machine and is not covered under the
warranty.
•Note: If your area experiences a high incidence of lightning o
r
power surges, we recommend that you install surge protectors
for the power and telephone lines. Surge protectors can be
purchased at most telephone specialty stores.
Insert one end of the line cord into the jack on the back of the
machine marked TEL. LINE. Insert the other end into a standard
(RJ11C) single-line wall telephone jack.
3
 Connecting the telephone line cord.
•Note: Your fax is set for tone dialing. If you are on a pulse dial
line, you must set your fax for pulse dialing. Press the keys on
the operation panel as follows:
1) Press these keys.
The display will show:
DIAL MODE
1=TONE, 2=PULSE
4
FUNCTION
The machine does not have a
power on/off switch, so the
power is turned on and off by
simply plugging in or
unplugging the power cord.
Be sure to insert the
line into the TEL. LINE
jack. Do not insert it
into the TEL. SET jack.
4
 Attaching the paper tray and document supports.
2) Press 1to select tone dialing, or 2to select pulse dialing.
3) Press the STOP key to return to the date and time display.
1) Attach the paper tray.
or
• Make sure the front side of the support faces you (the support
should curve slightly toward you).
5
 Extension phone (optional).
1) Remove the seal covering the TEL. SET jack.
If desired, you can connect an extension phone to the TEL. SET
jack on the fax.
1
TONE 2 PLUSE
STOP
2) Attach the received document tray.
3) Attach the original document support.

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2) Connect the extension phone line to the TEL. SET jack.
5. Loading Printing Paper
1
If you are going to load legal size paper, pull out the paper tray
extension.
2
Fan the paper, and then tap the edge against a flat surface to
even the stack.
3
Pull the paper release lever toward you.
You can load up to 200 sheets of letter, A4 or legal paper (max. 20
lbs.) in the paper tray.
Caution!
Do not use the blank side of paper that has already been printed on.
4
 Insert the stack of paper firmly into the tray, print side up.
• Make sure that the stack is not higher than the marked line.
Loading too much paper may cause paper jams and misfeeds.
• If paper remains in the tray, take it out and combine it into a
single stack with the new paper before adding the new paper.
Important:
Be sure to load the paper so that printing takes place on th
e
print side of the paper. Printing on the reverse side may result in
poor print quality.
5
 Make sure the stack of paper is aligned against the right pape
r
quide, and then gently move the left paper guide to the 8 1/2 posi-
tion for letter or legal paper, or the A4 position for A4 paper.
6
 Push the paper release lever back down.
• Note: If the paper does not feed correctly, remove the entir
e
stack from the tray and repeat the loading procedure from the
beginning.
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1 – 9
UX-4000MU
FO-2950MU/C
7
 The fax has been set at the factory to scale the size of received
faxes to letter size paper. If you have loaded legal paper, you
must change the paper size setting to legal. Press these keys:
The display will show:
The display will briefly show your selection and then show:
Press the STOP key to return to the date and time display.
PAPER SIZE SET
1=LETTER, 2=LEGAL
FINE PRIORITY
1=YES, 2=NO
PAPER SIZE SET
3=A4
Press 1to select LETTER or 2to select LEGAL. (You can also
press 3to select A4.)
or
LEGAL
STOP
LETTER
4
FUNCTION
1 2
6. Clearing a jammed document
1
Open the operation panel by grasping the panel release and pull-
ing up.
2
Remove the document.
If the original document doesn't feed properly during transmission o
r
copying, or DOCUMENT JAMMED appears in the display, first try
pressing the START key. If the document doesn't feed out, open the
operation panel and remove it.
Important:
Do not try to remove a document without opening the operation
panel. This may damage the feeder mechanishm .
3
Close the operation panel, making sure it clicks into place.
7. Clearing jammed printing paper
1
 If most of the jammed page is protruding from the back of the fax,
pull the paper release lever toward you and try pulling the page
out.
2
 If the jammed page comes out, take out the rest of the paper in
the tray, straighten the stack, put it back in the paper tray, and
push down the paper release lever.
•If you are unable to clear the jam in this way, continue with the
following steps.
3
 Grasp the print compartment cover at both sides as shown, and
pull up to open the cover.
• Caution!
The fusing unit inside the print compartment becomes very hot
during operation. Be careful not to touch the inside of the
compartment.

1 – 10
UX-4000MU
FO-2950MU/C
4 Grasp the finger hold on the toner cartridge handle where it is
marked PUSH, and pull the handle out. Hold the handle and pull
the toner cartridge out of the compartment.
•Place the toner cartridge on a sheet of paper on a level surface.
5 Grasp the tabs on the drum cartridge handle and gently pull the
cartridge out of the machine.
6 Wrap the drum cartridge in a large sheet of paper as shown at
right so that the green drum section is shielded from light, and
place it gently on a level surface.
•Do not touch the green drum in the drum cartridge. This will
damage the drum surface.
•Do not expose the drum to direct light. This will damage the
drum.
7 Gently pull the jammed paper out of the machine.
•If needed, turn the wheel on the right side of the fusing unit to
eject the paper from the machine.
• Caution!
Do not use excessive force to pull the jammed paper out. If the
paper tears and a piece remains inside the machine, a service
call may be necessary to remove the remaining piece.
Wheel
Fusing unit
8 Replace the drum cartridge.
•To insert the cartridge, align the guides on the cartridge with the
runners on the sides of the compartment.
9
 Replace the toner cartridge and close the print compartment
cover. (Refer to Installing the Toner Cartridge.)
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1 – 11
UX-4000MU
FO-2950MU/C
[5] Maintenance
1. Scanning glass and rollers.
Clean the scanning glass and rollers frequently to ensure that you
r
transmitted images and copies are of the highest quality.
Open the operation panel (grasp the panel release and up), and
wipe the scanning glass, rollers and white backplate with a soft
cloth.
•Make sure that all dirt and stains (such as correcting fluid) ar
e
removed, as dirts and stains will cause vertical lines on transmitted
images and copies.
2. The housing.
Wipe the external parts and surface of the machine with a dry cloth.
• Caution!
Do not use benzene or thinner. These solvents may damage o
r
discolor machine.
3. Cleaning the drum cartridge.
If you find that characters or parts of an image are missing from you
r
printed pages, the drum in the drum cartridge may need ceaning.
Follow the steps below to clean the drum.
1
Grasp the print compartment cover at both sides as shown, and
pull up to open the cover.
• Caution!
The fusing unit inside the print compartment becomes very hot during
operation. Do not touch the inside of the compartment or the pape
r
guide on the underside of the print compartment cover.
Document rollers
White
backplate
Scanning glass
2
Grasp the finger hold on the toner cartridge handle where it is
marked PUSH, and pull the handle out. Rehold the handle and
pull the toner cartridge out of the compartment.
•Place the toner cartridge on a sheet of paper on a level surface.
3
Grasp the tabs on the drum cartridge handle and gently pull the
cartridge out of the machine.
4
Take a sheet of clean paper and roll it into a tube. Roll it tightly so
that the diameter of the holes at each end is less than the thick-
ness of your little finger.
5
Gently wipe the surface of the drum with the rolled-up paper to
remove any particles of toner caked on the drum.
•Do not let the drum surface come into contact with anything other
than the rolled-up paper. Fingerprints, water, alcohol, and othe
r
solvents will damage the drum surface.
•Do not touch the drum surface with the edges of the rolled-up
paper.

1 – 12
UX-4000MU
FO-2950MU/C
6
Replace the drum cartridge.
•To insert the cartridge, align the guides on the cartridge with the
runners on the sides of the compartment.
7
Replace the toner cartridge and close the print compartment cov-
er.(Refer to Installing the Toner Cartridge.)
[6] Troubleshooting
1. Using the RESET key
If the fax machine stops responding when you press any of the oper-
ation panel keys, you must reset it. This can be done as follows:
1
Grasp the print compartment cover at both sides as shown, and
pull up to open the cover.
• Caution!
The fusing unit inside the print compartment becomes very hot
during operation. Do not touch the inside of the compartment o
r
the paper guide on the underside of the print compartment cover.
2
Use a ballpoint pen to press the RESET button.
• Note: Pressing the RESET button clears any documents that are
stored in memory.
3
Close the print compartment cover, pressing down firmly on each
side to make sure it is completely closed.
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1 – 13
UX-4000MU
FO-2950MU/C
2. Message and Signals
2
 Audible signals
Continuous tone
Rapid intermittent
tone
Intermittent tone
(3 beeps)
Indacates the end of
transmission, reception,
or copying.
Indacates incomplete
transmission, reception,
or copying.
Indacates that the hand-
set is off hook.
3 seconds
5 seconds
(1 seconds on, 1
second off)
Continuous
(0.7 seconds on,
0.3 seconds off)
1
 Display messages
CAN'T PRINT DATA
CHECK PC
SIZE ERROR
A fax has been received to memory
because printing is not possible. This
message will alternate with a mes-
sage that indicates the problem. The
fax will print out automatically when
the problem is resolved.
The paper size setting is incorrect.
Change the paper size setting.
This appears if you press the E-MAIL
key and your computer is not turned
on or is not correctly connected to the
fax machine.
COVER OPEN The print compartment cover is open.
Press down firmly on both sides of the
print compartment cover to close it.
DOCUMENT JAMMED The original document is jammed.
See the Clearing Paper Jams.
FUNCTION MODE The FUNCTION key has been
pressed.
GROUP SPACE FULL This appears if you attempt to pro-
gram a Group Key when all Group
Keys have already been programmed.
HOLD The HOLD/SEARCH key has been
pressed to put the other party on hold
during a phone conversation.
Press the HOLD/SEARCH again to
take the other party off hold.
LINE ERROR Transmission or reception was suc-
cessful. Press the STOP key to clear
the message and then try again.
LINE IS IN USE An extention phone connected to the
fax is being used. Do not lift the fax's
handset or attempt transmission at
this time, as this will interrupt the con-
versation on the extension phone.
MEMORY IS FULL The memory is full. This may occur
during fax reception if too much data
is received before the pages can be
printed out. If faxes have been
received to memory because printing
is not possible (an additional mes-
sage will indicate the problem),
resolve the problem so that printing
can continue.
MEMORY PRINTING The fax is preparing to or printing out
a document from memory.
NO DATA This appears if you attempt to search
for an automatic dialing number when
none have been stored.
NO # STORED You have tried to dial or clear a Rapid
Key or Speed Dial number that hasn't
been programmed (a full number
hasn't been assigned to it)
OFF HOOK
OUT OF PAPER
ON HOOK DIAL
This appears if you forgot replace the
handset after using it to dial and send
a fax. Replace the handset or press
the STOP key to clear the message.
The SPEAKER key has been pressed
and the fax machine is waiting for you
to dial.
You are out of printing paper (or the
paper release lever is open). Load
paper as explained in Loading Print-
ing Paper.
PAPER JAMMED The printing paper is jammed. See
the Clearing Paper jams.
SEND READY A document has been loaded and the
fax machine is waiting for you to
begin faxing or copying.
REPLACE TONER The toner cartridge must be replaced.
SEARCH DIAL The HOLD/SEARCH key has been
pressed. Press # or to search for
an automatic dialing number, or press
the STOP key to return to the date
and time display.
TOTAL PAGE(S) 01 Number of pages transmitted,
received, or copied.
TX MEMORY FULL This message appears if you insert a
document into the document feeder
when 30 transmission jobs are alrea-
dy waiting in memory for transmis-
sion. You can continue setting up the
transmission job after the job current-
ly being sent is completed.
This message may also appear if fax-
es have been received to memory
due to a printing problem. In this
case, resolve the problem so that prin-
ting can take place and free memory.

1 – 14
UX-4000MU
FO-2950MU/C
[7] Quick reference guide
Entering Your Name and Number 1.Press:
Display shows:
2. Press: 3. Enter your fax number (max. of 20 digits)
by pressing the number keys.
•
To insert a space between digits, press the # key.
•
If you make a mistake, press the SPEED DIAL key to backspace and clear the mis- take.
4. Press: 5.Enter your name by pressing the appro-
priate number keys as shown below.
•
To enter two letters in succession that require the same key, press the SPEAKER key after entering the first let- ter.
3
Setting the Date and Time 1.Press:
Display shows:
2.Press: 3. Enter two digits for the month (01 to 12). 4.Enter two digits for the day (01 to 31). 5.Enter four digits for the year (Ex: 2000) 6. Enter two digits for the hour (01 to 12)
and two digits for the minute (00 to 59).
7. Press for A.M. or #for P.M.
8. When finished, press:
Storing and Clearing Auto Dial Numbers 1. Press:
Display shows:
2.Press 1to store a number or 2to clear a
number.
3.Press a Rapid Key or enter a 2-digit
Speed Dial number (from 00 to 99). (If you are clearing a number, go to Step 7.)
4. Enter the full fax/telephone number. 5.Press: 6. Enter the name of the location by press-
ing number keys.(Refer to the letter entry table in Entering Your Name and Num- ber.)
7. Press:
OWN NUMBER SET PRESS START KEY
A = B = C =
D =
E =
F =
G =
H =
I =
J =
K =
L =
M =
N =
O =
P =
Q =
R =
S =
T =
U =
V =
W =
X = Y =
Z =
SPACE =
•
To change case, press the REDIAL key. Press # or to scroll through symbols and special characters.
6.When finished, press:
FAX/TEL # MODE 1=SET, 2=CLEAR
DATE & TIME SET PRESS START KEY
START
START
START
START
START
START
START
STOP
FUNCTION
FUNCTION
STOP
STOP
3
FUNCTION
3
Sending Faxes
Place your document (up to 20 pages) face down in the document feeder. Normal Dialing 1.Lift the handset or press 2.Dial the fax number. 3.Wait for the reception tone (if a person
answers, ask them to press their Start key).
4.Press: Rapid Key Dialing Press the appropriate Rapid Key. Transmission will begin automatically. Speed Dialing 1.Press: 2.Enter the 2-digit Speed Dial number. 3.Press:
Receiving Faxes Press the RECEPTION MODE key until the arrow in the display points to the desired reception mode.
FAX mode: The fax machine automatically answers on four rings and receives the incoming document. TEL mode:
Beep
A.M. mode: Select this mode when an answering machine is connected to the fax and the answering machine is turned on.
FAX
TEL
A.M.
FEB 01 10:30
M:00% STAND-BY
FAX
TEL
A.M.
FEB 01 10:30
M:00% STAND-BY
FAX
TEL
A.M.
FEB 01 10:30
M:00% STAND-BY
START
START
SPEAKER
SPEED
DIAL
START
RECEIVING
RECEPTION
MODE
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UX-4000MU
FO-2950MU/C
2 – 1
CHAPTER 2. ADJUSTMENTS
[1] Adjustments
General
Sincethefollowingadjustmentsandsettingsareprovidedforthismodel,
make adjustments and/or setup as necessary.
1. Adjustments
Adjustments of output voltage (FACTORY ONLY)
1. Install the power supply unit in the machine.
2. Set the recording paper and document.
3. When the document is loaded, power is supplied to the output lines.
Confirm that outputs are within the limits below.
Output voltage settings
Fig. 1
Fig. 3
Printer PWB
1
CNPWCN101 12
1
12
Power
Supply
PWB
2. High voltage power adjustments
The high voltage power adjustments are composed of the MC output
voltage adjustment and the DC bias output voltage adjustment. Either
adjustment is performed with the diag function. (MAIN CHG ADJUST
MODE)
1 MC output voltage adjustment
In the measurement circuit shown below, adjust VR1 to be –1050V ~
–1200V (aim at –1100V)
MC
Measure with the high
voltage tester
(effective value meter). DRUM
• Capacitor: 1000pF/3KV (VCKYQY3FB102K)
• Diode: SHV-03 (VHDSHV03///-1)
Fig.2
VR1 (MC output voltage adjustment volume)
+
–
MC output
voltage check
Output Voltage limits
+5V 4.75V~5.25V
+24VH 23.04V~24.96V
+24V* 23.04V~24.96V
PIN No. Connector
No. CNPW
1 +5V
2DG
3DG
4 +24VH
5MG
6MG
7 +24VS
8 PWRLY–
9 HLON–
10 +24V
11 +24V
12 ZC

UX-4000MU
FO-2950MU/C
2 – 2
2
DC bias output voltage adjustment
Adjust VR2 so that the output voltage is –310V ±5V
For measurement, use the high voltage tester (effective value me-
ter).
VR1 (MC output voltage adjustment volume)
+
–
BC-Bias
Output voltage check
VR2
(DV bias output adjustment volume)
DC-Bias
Output voltage check
–
+
DRUM
DC-Bias
3 Transfer charger voltage check
After MC output voltage adjustment and DC bias output voltage ad-
justment, check transfer charger voltage.
Check that the output voltage is +3200V ~ +3700V.
For measurement, use a high voltage tester (effective value meter).
Transfer charger
Output voltage check
+
–DRUM
D7
D8
Note: For measurement, do not remove Printer PWB from the bottom
plate.
VR1 (MC output voltage adjustment volume)
+
–
Transfer changer
Output voltage check
Fig.3
Fig.4
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UX-4000MU
FO-2950MU/C
2 – 3
3. IC protectors replacement
ICPs (IC Protectors) are installed to protect the TX motor drive circuit
and verification stamp drive circuit. ICPs protect various ICs and elec-
tronic circuits from an overcurrent condition.
The location of ICPs are shown below:
F100
CNM1
CNLIUA
CNSP
CNLIUB
CNPRT
CNRTH
CNFUSE
CNPN
CNCIS
IC6
(step 1) Select "OPTION SETTING".
DISPLAY:
DISPLAY:
DISPLAY: TONE SELECTED
KEY:
FUNCTION 4
KEY:
OPTION SETTING
PRESS or #
KEY:
DIAL MODE
1= TONE, 2= PULSE
KEY:
KEY:
DISPLAY:
(step 4) End, using the "STOP" key.
(step 3) Select, using "1" or "2".
(step 2) Select "DIAL MODE".
Push # until " DIAL MODE " is
indicated because the number of
# s changes by the models.
1
2
PULSE SELECTED
STOP
(1) F100 (ICPS10) is installed in order to protect IC’s from and
overcurrentgenerated in the verification stamp drive circuit. If F100
is open, replace it with a new one.
4. Settings
(1) Dial mode selector
OPTION SETTING: DIAL MODE (Soft Switch No. SW2 DATA No. 1)
Use this to set the fax machine to the type of telephone line you are on.
• The factory setting is "TONE".
Control PWB (Bottom side)
Fig.5

UX-4000MU
FO-2950MU/C
2 – 4
[2] Diagnostics and service soft switches
1. Operating procedure
Two kinds of diagnoses are supported.
1-1. Fax diagnosis
This diagnosis is concerned with the main body of fax which is used
for production and service support.
Entering the diagnostic mode
1-2. Print diagnosis
This diagnosis is concerned with the print which is used for
production and service support.
Entering the diagnostic mode
Memory clear when power is turned on
Pressing the START and STOP keys, turn on the main power, and the
following message will be displayed.
Press START key, the memory will be cleared to be ready for operation.
Press COPY key, the memory will be cleared to be ready for process
check.
If press the other keys, it will continue ready for operation as it is.
Press , and the following
display will appear.
FUNC
9 8 6
PRINT DIAG MODE
PRESS START KEY
(Diag • specifications)
FUNC
986
START 01 AREA PRINT MODE
START 02 CHECK PATTERN 1
START 03
CHECK PATTERN 2
START04
CHECK PATTERN 3
START05
PAPER FEED AGING
START06
LIFE SET MODE
START07
LIFE ALL CLEAR
START
START
08
LIFE ENTRY MODE
START
09
TOP ADJUST MODE
START
START
Then press the key. Select the desired item with the
key and the key or select with the rapidkey.
Enter the modewith the key.
START10
LIFE CLEAR MODE
START11
MAIN CHARGER ADJUST
PRINT DIAG MODE
MEMORY CLEAR?
YES: START
FUNC 9 8 7
START01 SOFT SWITCH MODE
START
02
START03
ROM & RAM CHECK
START
04
AUTO FEEDER MODE
START
05
AGING MODE
START
07
PANEL KEY TEST
OPTICAL ADJUST MODE
CHECK PATTERN MODE
START
08
START06
START09
START
10
SIGNAL SEND MODE
START
11
MOTOR AGING MODE
MEMORY CLEAR MODE
TEL. NUMBER SET
START
4000MU: ROM: FAM0
2950MU: ROM: FAN0
2950MC: ROM: FAP0
FUNC
9 8 7
Press , and the following
display will appear.
DIAG MODE
START
Then press the key. Select the desired item with the key
and the key or select with the rapid key.
Enter the mode with the
START key.
(Diag
• specifications)
4000MU: ROM:
2950MU: ROM:
2950MC: ROM:
FAM0
FAN0
FAP0
FAM0
FAN0
FAP0
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