MODEL
FO-90
FACSIMILE
OPERATION MANUAL
1. Installation   
  2. Using the Answering Machine     
  3. Sending Documents   
  4. Receiving Documents    
  5. Making Copies  
  6. Making Telephone Calls
  7. Special Functions
  8. Printing Lists
  9. Maintenance    
10. Troubleshooting
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
FO-90 FACSIMILE   
all-fo90hk.book  Page 1  Friday, December 3, 1999  10:00 AM
Quick Reference Guide
Entering Your Name and Setting the Date and Time
Number
1. Press: FUNCTION
3
1. Press: FUNCTION
3
Display shows: DATE & TIME SET
Display shows: OWN NUMBER SET
2. Press: START/
MEMORY
2. Press: START/
MEMORY
3. Enter two digits for the day  (01 to 31).
3. Enter your fax number (max. of 20 digits) 4. Enter two digits for the month (01 to 12).
by pressing the number keys. 
5. Enter four digits for the year (Ex: 2000)
• To insert  a space between digits, press 
the # key. 6. Enter two digits for the hour (01 to 23) 
and two digits for the minute (00 to 59).
• If you make a mistake, press the SPEED STOP
DIAL key to backspace and clear the mis- 7. When finished, press: START/
MEMORY
take.
4. Press: START/
MEMORY Storing and Clearing Auto 
5. Enter your name by pressing the appro- Dial Numbers
priate number keys as shown below. FUNCTION
1. Press: 3
• To enter two letters in succession that 
require the same key, press the 
SPEAKER key after entering the first let- Display shows: FAX/TEL # MODE
ter.
SPACE = J = T = 2. Press 1 to store a number or 2 to clear a 
A = K = U = number.
B = L = V =
C = M = W = 3. Enter a 2-digit Speed Dial number (from 
D = N = X = 01 to 05 for Rapid Key Dialing, or 06 to 40 
E = O = Y = for Speed Dialling). (If you are clearing a 
F = P = number, go to Step 7.)
Z =
G = Q = 4. Enter the full fax/telephone number.
H = R =
I = S = 5. Press:
START/
MEMORY
• To change case, press the REDIAL key. 
Press # or * to scroll through symbols 6. Enter the name of the location by press-
and special characters. ing number keys. (Refer to the letter entry 
table in Entering Your Name and Num-
STOP
6. When finished, press: ber.) 
START/ STOP
MEMORY
7. Press: START/
MEMORY
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all-fo90hk.book  Page 2  Friday, December 3, 1999  10:00 AM
Quick Reference Guide
Sending Faxes FAX mode: The fax machine automatically 
answers on the set number of rings and 
receives the incoming document.
Place your document 
(up to 5 pages) face TEL mode: 
down in the document 
feeder. Beep START/
MEMORY
Normal Dialling 
SPEAKER
1. Lift the handset or press RECEIVING
2. Dial the fax number. 
TEL/FAX mode: The fax machine 
3. Wait for the reception tone (if a person automatically answers on the set number of 
answers, ask them to press their Start rings and receives faxes. Voice calls 
key). 
(including manually dialled fax 
4. Press: START/ transmissions) are signalled by a special 
MEMORY
ringing sound.
Rapid Key Dialling A.M. mode: Select this mode when you go 
out to receive both voice messages and 
Press the appropriate Rapid Key. faxes. 
Transmission will begin automatically.           
RECORDING AN OUTGOING 
Speed Dialling  
MESSAGE
SPEED
1. Press: DIAL
FUNCTION
1. Press: 0
2. Enter 2-digit Speed Dial number. 
3. Press: Display shows: OGM RECORDING
START/
MEMORY
START/
2. Press: MEMORY
Receiving Faxes
3. Press 1 (GENERAL) to record an outgo-
ing message for the answering machine. 
Press the RESOLUTION/RECEPTION Press 2 (TRANSFER) to record an outgo-
MODE key until the arrow in the display ing message for the Transfer function.
points to the desired reception mode (make 
sure the document feeder is empty). 4. Pick up the handset, press the START/
MEMORY key, and speak into the handset 
TEL FAX
05   NOV  10:30 to record your message.
TEL/FAX A.M.
RESOLUTION/ TEL FAX 5. When finished, press the STOP key or 
RECEPTION MODE 05   NOV  10:30 replace the handset.
TEL/FAX A.M.
STOP
TEL FAX 6. Press:
05   NOV  10:30
TEL/FAX A.M.
TEL FAX
05   NOV  10:30
TEL/FAX A.M.
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Introduction
Welcome, and thank you for 
choosing a Sharp facsimile 
machine! The features and 
specifications of your new Sharp 
fax machine are shown below.
Automatic dialling Rapid Key Dialling: 5 numbers
Speed Dialling: 35 numbers
Fax paper Initial starter roll (included with machine):
10 m
Recommended replacement roll:
FO-20PRw, 30 m (12.7mm core)
Paper cutting method Automatic cutter
Modem speed 9600 bps with automatic fallback to lower 
speeds.
Transmission time* Approx. 15 seconds
Resolution Horizontal: 8 pels/mm
Vertical:
Standard: 3.85 lines/mm
Fine /Halftone: 7.7 lines/mm
Super fine: 15.4 lines/mm
Automatic document 5 pages max. (20 lb paper)
feeder
Halftone (grayscale) 64 levels
Note: This fascismile machine is Year 2000 compliant.
*Based on ITU-T Test Chart #1 at standard resolution in Sharp special mode, 
excluding time for protocol signals (i.e., ITU-T phase C time only).
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Display 16-digit LCD display
Compression scheme MR, MH, Sharp (H2) 
Applicable telephone line Public switched telephone network
Compatibility ITU-T (CCITT) G3 mode
Input document size Automatic feeding:
Width: 148 to 216 mm
Length: 140 to 297 mm
Manual feeding:
Width: 148 to 216 mm
Length: 140 to 600 mm
Effective scanning width 210 mm max.
Effective printing width 210 mm max.
Contrast control Automatic/Dark selectable
Reception modes Fax, Tel, Tel/Fax, A.M.
Copy function Yes
Telephone function Yes (cannot be used if power fails)
Power requirements 220-240 V AC, 50/60 Hz
Operating temperature 5 - 35°C
Humidity Maximum: 85% RH
Power consumption Standby: 2.6 W
Maximum: 115 W
Dimensions Width: 304 mm
Depth: 236 mm
Height: 122 mm 
Weight Approx. 2.6 kg
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As a part of our policy of continuous improvement, SHARP reserves the right to 
make design and specification changes for product improvement without prior notice. 
The performance specification figures indicated are nominal values of production 
units. There may be some deviations from these values in individual units.
Important safety information
Be sure to save these instructions!
When using your fascimile equipment, basic safety precautions 
should always be followed to reduce the risk of fire, electric shock 
and injury to persons, including the following:
• Do not disassemble this machine or attempt any procedures not 
described in this manual. Refer all servicing to qualified service 
personnel.
• This machine must only be connected to a 220-240 V, 50/60 Hz, 
grounded (3-prong) outlet. Connecting it to any other kind of outlet 
will damage the machine and invalidate the warranty.
• Do not install or use the machine near water, or when you are wet. 
For example, do not use the machine near a bath tub, wash bowl, 
kitchen sink or laundry tub, in a wet basement, or near a swimming 
pool. Take care not to spill any liquids on the machine.
• Unplug the machine from the power outlet and telephone jack and 
consult a qualified service representative if any of the following sit-
uations occur:
- Liquid has been spilled into the machine or the machine has been
  exposed to rain or water.
- The machine produces odors, smoke, or unusual noises.
- The power cord is frayed or damaged.
- The machine has been dropped or the housing damaged.
• Do not allow anything to rest on the power cord, and do not install 
the machine where people may walk on the power cord.
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• Never insert objects of any kind into slots or openings on the 
machine. This could create a risk of fire or electric shock. If an 
object falls into the machine that you cannot remove, unplug the 
machine and consult a qualified service representative.
• Do not place this machine on an unstable cart, stand or table. The 
machine could be seriously damaged if it falls.
• Never install telephone wiring during a lightning storm.
• Never install telephone jacks in wet locations unless the jack is spe-
cifically designed for wet locations.
• Never touch bare telephone wires or terminals unless the telephone 
line has been disconnected at the network interface.
• Use caution when installing or modifying telephone lines.
• Avoid using a telephone (other than a cordless type) during an elec-
trical storm. There may be a remote risk of electric shock from 
lightning.
• Do not use a telephone to report a gas leak in the vicinity of the 
leak.
• The power outlet must be installed near the equipment and must be 
easily accessible.
Important:
• This facsimile machine is not designed for use on a line which has 
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 experi-
ence errors during transmission and reception of facsimile mes-
sages. 
• This facsimile machine is not compatible with digital telephone sys-
tems.
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Table of Contents
Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Important safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table of Contents  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.  Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Unpacking Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
A Look at the Operation Panel  . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connections  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Loading the Thermal Paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Entering Your Name and Fax Number  . . . . . . . . . . . . . . . . . . . . 23
Setting the Date and Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Setting the Reception Mode  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Volume Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.  Using the Answering Machine  . . . . . . . . . . . . . . . . . . . . 34
Recording an Outgoing Message . . . . . . . . . . . . . . . . . . . . . . . . 34
Operating the Answering Machine  . . . . . . . . . . . . . . . . . . . . . . . 37
Optional Answering Machine Settings. . . . . . . . . . . . . . . . . . . . . 41
Transfer Function  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Override Ringing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Remote Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
3.  Sending Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Transmittable Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Loading the Document  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Adjusting the Resolution and Contrast  . . . . . . . . . . . . . . . . . . . . 63
Sending a Fax by Normal Dialling . . . . . . . . . . . . . . . . . . . . . . . . 65
Sending a Fax by Automatic Dialling. . . . . . . . . . . . . . . . . . . . . . 67
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