Sharp FO-4700 User manual

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FO-4700TH
FO-47A4
OPTION:PAPER CASSETTE
MODEL FO-47A4
No. 00ZF4700THSME
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 : 770-810 mm
Laser Pulse Times : 49.2 µs
Laser Output Power : 0.37 mW
Illustration: FO-4700
Illustration: FO-47A4
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
MODEL FO-4700

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FO-4700TH
FO-47A4 CONTENTS
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
[3]Transmittabledocuments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
[4] Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
[5] Quick reference guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
CHAPTER 2. ADJUSTMENTS
[1] Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
[2] Diagnostics and service soft switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
[3]Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
[4] Error code table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
CHAPTER 3. MECHANICAL DESCRIPTION
[1] Mechanical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
[2] Printer description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
[3] Disassembly and assembly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
[4] How to install the verification stamp (FO-45VS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
[3] Circuit description of LIU PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
[4] Circuit description of operation PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
[5] Circuit description of power supply PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
[6] Circuit description of RS232C I/F PWB (Option:FO-47IF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT
[1] Control PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
[2] LIU PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
[3] Printer PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23
[4] Power supply PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
[5] Operation panel PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29
[6] High voltage PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31
[7] Toner empty PWB circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
[8] Option:Paper cassette PWB circuit (FO-47A4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
PARTS GUIDE

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FO-47A4
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications
• GENERAL
* BasedonITU-T(CCITT)TestChart#1 atstandard resolutionin 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 dialling Rapid Key Dialling: 48 numbers
Speed Dialling: 75 numbers
Memory size* 1 MB (approx. 56 pages with ECM off)
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, A4 paper) fax machine): Approx. 3000 pages
Replacement cartridge (FO-47DC):
Approx. 6000 pages
Drum cartridge yield Initial starter cartridge (included with
fax machine): 20,000 pages (avg.)
Replacement cartridge (FO-47DR):
20,000 pages (avg.)
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 50 pages max. (A4 paper)
feeder
Paper capacity 250 sheets (500-sheet
cassette available as option)
Compression scheme MMR, MR, MH, Sharp (H2)
Halftone (grayscale) 64 levels
Applicable telephone line Public switched telephone network
Compatibility ITU-T (CCITT) G3 mode
Printing resolution Horizontal: 16 lines/mm
Vertical: 15.4 lines/mm
PC Printing: 600 dpi
Input document size Automatic feeding:
Width: 148 to 256 mm
Length: 128 to 364 mm
Manual feeding:
Width: 148 to 279 mm
Length:128 to 432 mm
Note: This facsimile machine is Year 2000 compliant.
Effective Scanning width 210 mm max.
Effective Printing width 203 mm max.
Reception modes Auto/Manual
Instascan speed 30 ppm (A4 paper)
Full Dual Access Yes
Copy function Single/Multi/Sort (99 copies/page)
Power requirements 220-240 V AC, 50/60 Hz
Operating temperature 10 - 30°C
Humidity 20 to 85% RH
Power consumption Standby: 10 W
Maximum: 740 W
Dimensions Width: 460 mm
Depth: 385 mm
Height: 270 mm
Weight Approx.12.6kg
: FO-47DC
: FO-47DR
: FO-47A4
: FO-47IF
: FO-1MK
: FO-45VS
Option
Toner cartridge
Drum cartridge
Paper cassette
PC interface
Option memory
Verification stamp

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FO-47A4
[2] Operation panel
LINE IN USE
CHANGEOVER
POWER SAVE RESOLUTION
STANDARD
FINE
SUPER FINE
HALF TONE
STATUS CHECK
123
456
7
89
10
CLEARSPSHIFTSPACE
A
I
Q
Y
B
J
R
Z
C
K
S
D
L
T
E
M
U
F
N
V
G
O
W
H
P
X
01
09
17
25
02
10
18
26
03
11
19
04
12
20
05
13
21
06
14
22
07
15
23
08
16
24
27 28 29 30 31 32
CLEARSPSHIFTSPACE
A
I
Q
Y
B
J
R
Z
C
K
S
D
L
T
E
M
U
F
N
V
G
O
W
H
P
X
33
41
CONTRAST
SEARCH DIAL
34
42
PAGE COUNTER
35
43
CONFIDENTIAL
36
44
TIMER
37
45
RELAY
38
46
39
47
MEM.STATUS
40
48
LIFE
DOWN UP
COVER SHEET
11
20 21 22 23 24 25 26
12 13 14 15 16 17 18 19
11
Rapid Key
overlay down
Rapid Key
overlay up
123
456
789
0
ABC
GHI
DEF FUNCTION
COPY DOCUMENT DUPLEX SCAN
BROADCAST
STOP START
REPORT
SPEED DIAL
REDIAL
SPEAKER
JKL MNO
PQRS TUV WXYZ
PRIORITY
27
28 29 30 31 32
393837363534
33
Display
This displays messages and prompts during operation and
programming.
LINE IN USE light
This lights when the fax machine is using the telephone line.
STATUS CHECK light
This lights when a paper size error or paper jam occurs, or when
the print compartment cover is open. A message will appear in
the display to indicate the problem. (The indicator also lights
steadily when the received document tray is not properly
installed.)
Service indicator
This lights when a problem occurs which must be fixed by a
service technician.
Paper out indicator
This lights when the fax machine is out of paper. If the machine
has a paper cassette, the indicator blinks when one of the paper
sources (tray or cassette) is out ofpaper, and lightssteadily
when all sources are out of paper.
Toner cartridge indicator
This blinks when the toner cartridge nears empty, and lights
steadily when the toner cartridge needs replacement.
Drum cartridge indicator
This blinks when the drum cartridge nears the end of its life, and
lights steadily when the drum cartridge needs replacement.
CHANGEOVER key
Two types of information appear in the display: prompts related
to operations you are performing, and information about how
the fax is using the telephone line (transmitting, receiving, etc.).
Press this key to switch between the two types of information.
POWER SAVE key
Press this key to turn on Power Save Mode, or set the Power
Save Mode timer if TIMER has been selected with Option
Setting 34 (Power Save Mode).
RESOLUTION key
Press this key to adjust the resolution before sending or copying
a document.
Rapid Dial Keys
Press one of these keys to dial a fax number automatically.
(Note that you must attach the Rapid Key labels.)
CONTRAST key
Press this key to adjust the contrast before sending or copying
a document.
PAGE COUNTER key
Press this key to include a slash and the total number of pages
after each page number on the pages of a transmitted document.
CONFIDENTIAL key
Press this key to send or print out a confidential document.
TIMER key
Press this key to set an operation to be performed automatically
at a later time.
RELAY key
Press this key to send a document to another Sharp fax machi-
ne and have that machine in turn relay the document to one or
more end receiving machines.
LIFE key
Press this key, followed by 1, to check the total number of pages
printed by the fax machine.
MEM. STATUS key
Press this key to check the status of documents waiting in mem-
ory for transmission.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

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19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
SEARCH DIAL key
Press this key to search through your auto dial fax numbers by
name.
COVER SHEET key
Press this key to include a cover sheet when sending a fax.
SPACE key
Press this key to enter a space when programming a name.
SHIFT key
Press this key to switch between upper and lower case letters
when programming a name.
SP key
Press this key to enter a symbol when programming a name.
CLEAR key
Press this key to clear a mistake when programming a name or
fax number.
Arrow keys
Press these keys to move the cursor forward or backward when
programming a name or fax number.
UP and DOWN keys
Press these keys to adjust the volume of the speaker when the
SPEAKER key has been pressed, or the volume of the ringer at
all other times.
Dial keypad
Use these keys to dial and program fax numbers.
FUNCTION key
Press this key to select various special functions.
SPEED DIAL key
Press this key to dial a Speed Dial number.
COPY key
Press this key to make a copy of a document.
DOCUMENT key
Press this key to transmit a document without reading it first
into memory.
DUPLEX SCAN key
Press this key to transmit or copy a two-sided document.
REDIAL key
Press this key to automatically redial the last number dialed.
SPEAKER key
Press this key when transmitting a document by Normal Dialling
to listen to the line and verify the response of the receiving fax
machine.
BROADCAST key
Press this key to send a document to a group of receiving fax
machines.
STOP key
Press this key to cancel an operation before it is completed.
PRIORITY key
Press this key when you need to transmit a document ahead of
other documents waiting in memory for transmission.
START key
Press this key to begin transmission when using Speed Dialling,
Direct Keypad Dialling, or Normal Dialling.
REPORT key
Press this key to print out a report on the most recently complet-
ed transmission or reception.

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FO-47A4
[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. 50 sheets
Special size: single sheet only (manual feed)
NOTES: •If you need to send or copy more 50 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
210 mm max.
•Readable length
This is the length of the document sent minus 4 mm from the top and
bottom edges.
Readable width
4mm
4mm
Readable length
(Min.) (Max.)
A4 size
(Max.)
128 mm
297 mm 432 mm
148 mm 210 mm
[
Normal size
]
279 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 (148mm × 128mm) ~
size Range W letter (279mm × 432mm)
A4 (210mm × 297mm)
Letter (216mm × 279mm)
Number of Document size B6 ~ Letter/A4 size 50 sheets
ADF sheets Weight B4 size/Legal 20 sheets
W letter size 1 sheet
90 kg or more
135 kg or less 1 sheet
Paper Kind Paper of fine quality/bond paper/
quality Kent paper

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[4] Installation
1. Site selection
Takethe followingpoints intoconsideration when selectinga sitefor 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 35°C (41°and 95°F).
•The humidity should be between 30% and 85% (without condensa-
tion).
ELECTRICITY
AC 220-240 V, 50/60 Hz, earthed (2-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.
•Ifyour areaexperiencesa highincidence oflightningor powersurges,
we recommend that you install a surge protector for the power and
telephonelines.Surge protectorscanbe purchasedatmost telephone
speciality stores
TELEPHONE SOCKET
Astandard RC11C telephone socket must be located near the machine.
This is the telephone socket commonly used in most homes and offices.
•Pluggingthe faxmachine intoa socket whichis notan RC11Csocket
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 mayfog 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.
Follow the steps below to install or replace the toner and drum
cartridges.
• The initial starter toner cartridge included with the fax machine
can print approximately 3000 A4-size pages (4% coverage of
each page).
• The replacement toner cartridge (FO-47DC) can print
approximately 6000 A4-size pages.
• The drum cartridge (FO-47DR) can print approximately 20,000
A4-size pages.

1 Press the green release and open the print compartment cover.
• Caution! The fusing unit inside the print compartment becomes
very hot during operation. Be careful not to touch the inside of
the compartment.
2 If you are replacing the toner cartridge, remove the old cartridge
and dispose of it according to local regulations. Go directly to Step
6 if you are only replacing the toner cartridge and not the drum
cartridge.
• If you are replacing the drum cartridge but not the toner cartri-
dge, remove the toner cartridge and place it on a sheet of paper.
3
If you are replacing the drum cartridge, remove the old cartridge
and dispose of it according to local regulations.
2. Installing the print cartridges (Toner
cartridge: FO-47DC/Drum cartridge: FO-47DR)

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FO-4700TH
FO-47A4
4 Remove the new drum cartridge from its packaging.
• Caution! Excessive exposure to light will damage the drum
cartridge. Install the cartridge promptly after removing it from its
packaging.
5 Insert the drum cartridge into the print compartment, aligning the
guides on the cartridge with the grooves on the sides of the compa-
rtment.
• Insert the cartridge by aligning the colored “1” labels on the
cartridge and the sides of the compartment.
• Make sure the drum cartridge is inserted in as far as it will go.
6 If you are installing a new toner cartridge, remove the new toner
cartridge from its packaging. Shake as indicated by the arrows to
distribute the toner evenly within the cartridge.
• If the toner is still lumpy after shaking, the gears in the
cartridge may make a noticeable sound when the print
compartment cover is closed after installing the cartridge.
This is normal and does not indicate a problem in the
machine.
Blue
Green
7
Hold the toner cartridge by the handle and lower it into the print
compartment. Make sure that the four pins (two on each side) fit
into the grooves on the sides of the compartment.
• Insert the cartridge by aligning the colored “2” labels on the
cartridge and the side of the compartment.
• Make sure the toner cartridge clicks into place.
8
Close the print compartment cover.
• Press down on the dot markings at the left edge to make sure
the cover is completely closed.
9
Reset the toner counter by pressing the LIFE key (flip up the
Rapid Key overlay), 2, and the START key.

F
Reset the drum counter by pressing the LIFE key (flip up the
Rapid Key overlay), 3, and the START key.
Note: The print compartment cover may become noticeably warm if a
large number of pages are successively printed. This is normal and
does not indicate a problem in the machine.
When to replace the toner cartridge
When the toner cartridge nears empty (about 100 pages can still be
printed), the toner cartridge indicator on the operation panel will blink.
When the toner cartridge is empty, the toner cartridge indicator will
light steadily and REPLACE TONER will appear in the display.
Printing will no longer be possible. Use the following replacement
toner cartridge:
Sharp FO-47DC toner cartridge
When to replace the drum cartridge
When the drum cartridge nears the end of its life, the drum cartridge
indicator on the operation panel will blink. When the drum cartridge
life is over, the drum cartridge indicator will light steadily and DRUM
LIFE OVER will appear in the display. Use the following replacement
drum cartridge:
Sharp FO-47DR drum cartridge
2
START
3
START
LIFE
V
LIFE
V
Blue
Green

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FO-47A4
3. Connections
Points to keep in mind when setting up
• Do not place the machine in direct sunlight.
• Do not place the machine near heaters or air conditioners.
• Keep dust away from the machine.
• Install the machine on a level surface.
1
Connecting the power cord
Connect the female end of the power cord to the fax machine as
shown. Insert the male end into a 220-240 V, 50/60 Hz, earthed
(2-prong) AC outlet.
Note: If your area experiences a high incidence of lightning or power
surges, we recommend that you install surge protectors for the power
and telephone lines. Surge protectors can be purchased at most tele-
phone specialty stores.
2
Connecting the telephone line cord
Insert one end of the line cord into the socket on theback of the
machine marked TEL. LINE. Insert the other end into a stan-
dard wall telephone socket.
NOTE: The fax machine is set for tone dialling. If you are on a
pulse dial line, you must set the fax machine for pulse dialling by
changing Option Setting 22.
Press the power
switch to turn on
the power
3 Connecting a telephone (optional)
If desired, you can connect a telephone to the TEL. SET
socket on the back of the machine.
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4
Attaching the document OUT tray
Insert the protrusion on the right side of the machine into the
hole in the right side ofthe document OUT tray as shown, then
bend the tray slightly and insert so that the protrusion on the
left side of the machine goes into the hole on the left side of
the document OUT tray.
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5
Attaching the received document tray
Slide the received document tray into the machine as
shown. When it stops, lift the end slightly and push in so
that the tray fits locksinto place.
Important! The received document tray must be attached for
the fax machine to operate properly.
6 Connection to a computer (Option : FO-47IF)
Note: This function is available as an option. If you wish to
use it, consult your dealer to have the PC interface board
installed.
If desired, you can connect the fax machine to the parallel port
of any compatible computer. Once you have installed the
provided printer software in your computer, you will be able to
use the fax machine as a laser printer for your computer.
Important! Use only an IEEE P1284 parallel cable to connect
the fax machine to your computer. We recomnend a
shieled cable no longer than 2m.
Pull out the tray
extension.
Make sure the left edge of
the tray fits into the slot.

1 – 8
FO-4700TH
FO-47A4
1) Make sure your computer and the fax machine are both turned off.
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2) Connect one end of the cable to the port on the fax machine.
Snap the clips on each side of the port onto the cable connector to
secure it.
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3) Connect the other end of the cable to the parallel port on the back
of your computer. 
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4) Press the panel keys as shown to set Option Setting 31(PC
Interface Mode) to ON.
• Before you can use the fax machine as a printer, you must also
install the printer software. To install the software, see the doc-
umentation that accompanies it.
Note: The message PC PRINTING will appear in the display when
the fax machine prints a print job from your computer. While this
message appears, you will not be able to use the operation panel of
the fax machine.
7
Verification Stamp (Option : FO-45VS)
Note: This function is available as an option. Consult your dealer if
you wish to use it.
When transmitting a document, you can have your fax stamp each
document page as it is scanned. After scanning, you can check to
see if all documents have been stamped to verify that no double feeds
occurred. (A double feed is when two pages are fed through the
scanner at once, which means that one of the pages is not scanned.)
To use this function, have your dealer install the Verification Stamp
option, and then set Option Setting 29 to ON.
4
3
1
1
STOP STOP
POWER
Turn
off
FUNCTION
4.Loading Printing Paper
You can load up to 250 sheets of A4-size paper (max. 80 g/m
2
.)
in the paper tray. You can load up to 500 sheets of paper in the
paper cassette.
The paper cassette is available as an option.
To have the cassette installed, consult your dealer.
1 Loading paper in the paper tray
1) Remove the received document tray.
2) Insert a stack of paper into the tray, print side up.
• Make sure the end of the tray is pushed in. Otherwise a
size error will result.
3) Replace the received document tray.
• The received document tray must be attached for the fax
machine to operate properly.
Attach a A4 label here to
indicate the paper size.

1 – 9
FO-4700TH
FO-47A4
If the original document doesn’t feed properly during transmission or
copying, or REMOVE ORIGINAL(S) 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 mechanism.
1
Open the operation panel.
• Squeeze the release marked PANEL RELEASE and pull up.
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2
Remove the document. 
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3
Close the operation panel, making sure it clicks into place.
5. Clearing a jammed document
2
Loading paper in the paper cassette (Option : FO-47A4)
1) Grasp the hand-hold on the cassette and pull out the cassette until
it stops.
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2) Push the pressure plate down until it locks into position. 
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3) Place a stack of paper in the cassette, print side up.
• Make sure the stack of paper is not higher than the two tabs
on the green paper guide and the two metal tabs. If it is,
remove some of the paper.
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4) Push the cassette back into the machine, making sure it clicks into
place.
Note: We recommend that you do not add paper to the tray or
cassette while paper still remains. This may result in double feeds.
Attach a A4 label here to
indicate the paper size.

1 – 10
FO-4700TH
FO-47A4
If the printing paper jams, PAPER JAM will appear in the display.
Follow the steps below to clear the jam.
1
Press the green release and open the print compartment cover.
• Caution! The fusing unit inside the print compartment becomes
very hot during operation. Be careful not to touch the inside of
the compartment.
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2
If the jammed paper is visible in the print compartment, pull it out.
• Make sure no torn pieces of paper remain in the print compart-
ment and rollers.
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3
If the jammed paper isn’t visible, remove the toner cartridge and
then the drum cartridge. 
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4
Open the black cover (hinged on the left) at the bottom of the com-
partment. If jammed paper is visible, remove it.
or
5 Close the black cover. Reinsert the drum cartridge and then the
toner cartridge.
• Insert the drum cartridge and toner cartridge by aligning the col-
ored numbers on the cartridges with their corresponding colored
numbers on the sides of the print compartment.
• When finished, close the print compartment cover.
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6
If you have a paper cassette and the display still indicates that pa-
per is jammed, open the cassette and remove the jammed paper.
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7
Replace the paper cassette.
Blue
Green
Blue
Green
6. Clearing jammed printing paper

1 – 11
FO-4700TH
FO-47A4
7. Instructions for installing the FO-47A4 paper
cassette
5
Insert the connector wires into their holder in the edge of the
base plate of the unit, and then insert the connector into its socket
on the printed circuit board (the white connector wire should be on
the right).
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6
Secure the cassette to the base plate of the unit with the 4 screws
as shown.
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7
Reattach the cassette side cover.
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8
Reattach the rear cover, securing it with the 4 screws.
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9
Close the print compartment cover and reattach the document
OUT tray.
Important! Be sure to turn off the power and unplug the power
cord before proceeding.
1
Remove the document OUT tray (if attached). Press the
green release and open the print compartment cover.
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2
Remove the screws (4) that secure the rear cover and then
remove the rear cover.
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3
Pull down on the bottom edge of the side cover to release it from
its catch, and then rotate the bottom edge up slightly (no more than
30°). Rehold the cover at the sides, bend it in slightly, and remove it.
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4
Pull out the connector so that it hangs over the edge of the
cassette. Place the unit on the cassette, making sure that the
studs go into the holes.

1 – 12
FO-4700TH
FO-47A4
[5] Quick reference guide
Note: Steps which are optional are enclosed in a dotted frame:
RESOLUTION
Normal Dialling
Transmitting documents
Direct Keypad
Dialling
Rapid Key Dialling
Speed Dialling
Redialling
START
Load
document press SPEAKER Dial (press numeric keys)
Wait for
reception tone Hang up
Load
document Dial (press
numeric keys)
Load
document Press Rapid Key
Load
document Enter Speed Dial number
(press numeric keys, - if less
than 2 digits, press START
to complete entry)
START
Load
document Wait for reception tone
START
START
RESOLUTION
RESOLUTION
RESOLUTION
RESOLUTION
RESOLUTION
SPEED DIAL
REDIAL

FO-4700TH
FO-47A4
2 – 1
CHAPTER 2. ADJUSTMENTS
[1] Adjustments
General
Sincethe followingadjustments andsettings areprovided forthis model,
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
CNPW CNPRT
CN1
IC2
CN1
CN7
CN4
1
1
1
1
11
11
8
1
1
1
112
30
30
12
8
CONTROL
PWB
PRINTER
PWB
HI VOLTAGE
PWB
CN5
CN1
POWER SUPPLY
PWB
IC2
VR1 VD
Voltage for adjust
+ Check point for voltage
Digital multi meter
+–
–
Connector CN5
No.
Pin No. CNPW
1 +24V SUB
2MG
3MG
4MG
5 +24V MAIN
6 +24V MAIN
7 +5V SUB
8DG
9DG
10 DG
11 +5V MAIN
12 +5V MAIN
Connector CN4
No.
Pin No. CN1
1 11 +5V
2 10 HV C HL
39TVR
4 8 T REM
5 7 T MON
6 6 B MON
7 5 B VR
8 4 C REM
9 3 C MON
10 2 MG
11 1 +24
Connector CN1
No.
Pin No. CN7
1 24 MAIN
2MG
3DG
4 5V MAIN
5 HEATER ON
6FAN
7 FAN LOCK
8 H RELAY OFF
Output Voltage limits
+5V MAIN 4.845V~5.355V
+5V SUB 4.845V~5.355V
+24V MAIN 23.04V~24.96V
+24V SUB 23.04V~24.96V
Top Void Printer Adjust Voltage
Label (mm.) Fig. 2 VR1 Fig. 1
5.5~6.9 4.42V
7.0~8.9 3.87V
9.0~10.9 3.14V
11.0~12.9 2.50V
13.0~14.9 1.86V
15.0~17.0 1.22V
ADJUST VOLTAGE LIST
TOP VOID LABEL
2
(step 1) Select "OPTION SETTING".
DISPLAY:
DISPLAY:
DISPLAY: TONE SELECTED
KEY:
FUNCTION 4
KEY:
4:OPTIONAL SETTING
ENTER #(01-34, ,#)
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".
1
2
PULSE SELECTED
STOP
Cursor
When initially registering,
the mode shows 1=TONE.
When registering again, the
mode which was registered
formerly is shown.
2
2. 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:
(1) F100 (ICPS10) is installed in order to protect IC’s from and
overcurrent generated in the verification stamp drive circuit. If F100
is open, replace it with a new one.
(2) F101 (ICPS18)isinstalled inorderto protectIC’sfromanovercurrent
generated in the TX motor drive circuit. If F101 is open, replace it
with a new one.
In addition to the replacement of F101 and F100, the factor causing
F101 and F100 to open must also be repaired. If not, F101 and
F100 will open again.
Replacement parts
ICPS10 (Sharp code: VHViCPS10//-1)
ICPS18 (Sharp code: VHViCPS18//-1)
3. 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".
Fig. 3
CONTROL PWB
(BOTTOM SIDE)
F100
F101
IC7
CNSP
CNSEN
CNCIS
CNPN
CNSTP
CNTXM
CNPW CNPRT CNLIU
1
1
2
1
8
101
1
11
150
27 25
1130
12
42
24
9
CNOP
Fig. 2

FO-4700TH
FO-47A4
2 – 2
[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.
Here, when 1: YES is selected, the memory will be cleared to be ready
for operation.
If 2: NO is selected, it will continue ready for operation as it is.
Press , and the following
display will appear.
FUNC
9 8 6
PCU ROM Ver.:
(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
BIAS ADJUST MODE
START07
LIFE SET MODE
START
START
08
LIFE ALL CLEAR
START
09
LIFE ENTRY 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
TOP ADJUST MODE
START11
LIFE CLEAR MODE
PCU ROM Ver.:
MEMORY CLEAR
EXECUTE ? 1 = YES , 2 = NO
FUNC 9 8 7
START01 SOFT SWITCH MODE
START
02 PRINT AREA
START
03 ROM & RAM CHECK
START
04 AUTO FEEDER MODE
START
05 AGING MODE
START
06 PANEL CHECK MODE
START
07 OPTICAL ADJUST MODE
START
08 PRODUCT CHECK
START
09 SIGNAL SEND MODE
START
10 COMM. CHECK MODE
START
11 MEMORY CLEAR
START
12 FLASH MEMORY
START
13 ALL FAX/TEL. ENTRY MODE
START
START
14
15 CONF. PASSCODE
START
16 PRINT HOLD CODE
START
17
ROM: FAL0
START
DEPT. PASSCODE
FUNC
9 8 7
Press , and the following
display will appear.
ROM: FAL0
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)
FAL0
MEMORY SET MODE
START
18 STAMP AGING
START
19 DIAL TEST MODE
START
20 COPY DIAG MODE

FO-4700TH
FO-47A4
2 – 3
2. Diagnostic items description
2-1. Fax diagnosis
1) Soft switch mode
In this mode, the soft switch are set and the soft switch list is printed.
•OFF to ON of telephone billing function which is using the image
memory is used (Note: In the existing set, the telephone billing
code function is specified from OFF to ON when the timer system
communication (including the batch communication) is set.)
Here,the memoryis usablewhen thetelephone billingcode func-
tion is on. It can be set from ON to OFF while the memory is
used. However, if setting is practically changed even once, it can
not be returned from OFF to ON.
•Switching ON/OFF of PC interface function during the use of im-
age memory.
•OFF to ON of department control function during use of image
memory.
(Note: In the existing set, the department control function is set
from OFF to ON when the timer communication (including the
batch sending) or the memory hold is set.)
•ON to OFF of continuous serial polling function when the con-
tinuous serial polling is started.
(Note: In the existing set, "ON to OFF of the continuous serial
polling function when the continuous serial polling is registered"
has been applied, but the conditions are now moderated. How-
ever, registrationis impossible tothe programof thenew continu-
ous serial polling when the continuous serial polling function is
OFF.)
•In addition, change of all soft switches during communication
7 Linked change of data (This is the same even in the optional setting.)
•When the department control function is off, the multi TTI func-
tion and telephone billing code function are turned off.
2) Print area
According to the size of the specified sheet, the effective printing area is
printed.
3) ROM & RAM check
The sum value of ROM, the work and the back-up RAM are checked.
The RS232C interface is also checked. If any error occurs, the buzzer
willinform it.(Referto thefollowingtable). Finally, theresultwill beprinted.
This diagnosis does not check the flash memory. The flash memory is
checked with the flash memory test.
For the short and long sounds, one pattern is as follows.
Main system: 0.5 seconds ON/0.5 seconds OFF
Sub system: 1.00 second ON/0.5 seconds OFF
The execution state of checking is as follows. Moreover, the list of the
check result is output after checking is ended.
1 Switch number selection
•Press START key for setting of the next soft switch. If the soft
switch number is the final, pressing START key will exit the soft
switch mode.
•Enter two digits of a soft switch number to set the switch number.
If a switch number of unexisting soft switch is entered, key error
buzzer sounds to reject the input.
2 Data number selection
The cursor position shows the data to be set.
Pressing# keymoves thecursor tothe right.If, however, thecursor is
on data number 8, pressing # key shifts the cursor to data number 1
of the next switch number. If the switch number is the final, pressing
# key will exit the soft switch mode.
Pressing key moves the cursor to the left. If, however, the cursor is
on data number 1, pressing key shifts the cursor to data number 1
of the former switch number. If the switch number is 1, pressing
key will not move the cursor and the error buzzer will sound.
3 Data setting method
Press the FUNCTION key, and the data at the position of the cursor
will be reversed to 0 when it is 1, or to 1 when it is 0. (If the soft switch
can be changed at the bit (Refer to 6 .), the error buzzer will sound
with the process not received.)
4 Outputting method of soft switch list
In the soft switch mode, press the REPORT key, and the soft switch
list will be output.
If the recording paper runs out or is clogged, the key error buzzer will
sound with the process not received.
5 Storage of data
In the following case, the data of the soft switches set will be stored.
•It is shifted to set the next soft switch by pressing the START
switch.
•It is shifted to set the next soft switch with the [#] key.
•It is shifted to set the last soft switch with the [ ] key.
•It is shifted to set another soft switch by inputting two digits as the
switch number. (When 2 digits are completely input.)
•Output of the soft switch list is started.
6 Inhibition of data change
(This is also applicable for the optional setting.)
In the following case, it is inhibited to change the data with the key
error buzzer.
•Switching ON/OFF of ECM during the use of image memory.
•Switching OFF to ON of the print hold function when the print
hold pass code has not yet been registered.
•Clearing the print hold pass code when print hold function is ON.
•Switching ON/OFF of the print hold function during the use of
memory such as in the case of substitute receiving.
S O F T S W I T C H M O D E
S W 0 1 = 0 0 0 0 0 0 0 0
Soft switch mode screen
Switch
No. 1
2 3 4 5 6 7 :DATA No.
8
Data
S O F T S W I T C H M O D E
S W 0 1 = 0 0 0 0 0 0 0 0
E N T E R L A S T D I G I T
S W 1
S O F T S W I T C H M O D E
S W 1 6 = 0 0 0 1 0 1 1 0
1 6
Number of buzzer sounds Device checked Remarks
1 time <Short sound> ROM Main
2 times <Short sounds> Integrated ROM Main
3 times <Short sounds> SRAM Main
4 times <Short sounds> DRAM Main
ROM CPU SRM DRM
• • • •
ROM CPU SRM DRM
P=PASS E=ERROR
P P P E
ROM/RAM
check list
output
Display during check Display after check

FO-4700TH
FO-47A4
2 – 4
4) Auto feeder mode
The auto feed function can be checked by inserting and discharging the
document. (The distance between pages can be displayed during op-
eration of the scanner.)
1 Check of auto feed function
After this mode is activated, set up the document, and press the
STARTkey,and it willbe automaticallyfed. (Before theSTARTkey is
pressed, the document sensor alone is activated.) Moreover, the
documentsize (A4/B4)and sensorinformation (A4/B4/ORG) aredis-
played when the document sensor is turned.
2 Display of distance between pages during operation of the scanner
•Soon after this mode is activated, press the FUNCTION key for 5
seconds or more, and the display mode of the distance between
pageswill beactivated.Then, setup thesending paperand select
the image quality, and then press the START key, and operation
will be started.
Be sure to press the FUNCTION key prior to the START key. If
theFUNCTION key isnot pressedbut theSTARTkey ispressed,
it will operate in the same matter as in the existing auto feeder
mode.
If the START key is pressed, the FUNCTION key will be invalid
hereafter. Therefore, the display mode of the distance between
pages and the existing mode can not be changed.
•While the sending paper is read, the image quality key can be
input. STD/FINE/S-FINE modes are usable. However, the same
operation of FINE will be selected if the intermediate tone is set.
•The image quality, the length of the sending page read, the page
distance to the next sending paper and the total of the sending
papers read are shown on the display.
•When the stop key is pressed or 100 sending papers are read,
the content shown on the display will be totally output as the list
after the remaining sending papers are discharged.
5) Aging mode
If any document is set up in the first state (when started), copying will be
executed. If it is not set up, "check pattern 1" of the print diagnosis is
output at the intervals of 1 time/60 minutes. (A total of 10 sheets are
output.)
6) Panel check mode
This is used to check whether each key is normally operated or not.
Accordingto thekeyinput, LCDis displayed.Moreover,duringexecution,
the document reading lamp is turned on.
Test results are printed. (The maximum 100 input keys can be printed .)
LED repeats lighting at regular intervals in sequence. (Lighting speed
is specified separately.)
In case of inputting all keys, key input OK is displayed when finishing
the STOP key.
When pressing the NUMERIC key during panel check, output of DTMF
corresponding with the key is started.
When pressing other keys, output is stopped.
7) Optical adjust mode
Set documents and press the START key for ordinary copying.
According to key operation, copying can be temporarily stopped.
STOP key: To temporarily stop reading documents.
START key: To start reading documents again.
When any document is not set, print area printing is performed.
8) Product check
The diagnosis is used in the production process.
After shift to the mode, the following operations are sequentially exe-
cuted. At this time, the sensor of read-error can be checked by feeding
the B4 document. Set up one short document of B4 size.
1 Memory clear (Same as Diagnosis 11)
2 Panel test (Same as Diagnosis 06)
3 Dial test (Same as Diagnosis 24)
4 Document auto feed
5 ROM & RAM test check (Same as the Diagnosis 03)
6 Flash memory test mode (Same as Diagnosis 12)
7 Registration of fixed data
Registration of rapid key No. and other data necessary for produc-
tion.
The registered data are shown in the following table. The chain dial
is not set for any destination.
8 Transmission check (Same as Diagnosis 10)
The soft switches necessary for production are set.
9 Test result print (one sheet)
Memory clear printing
Panel test result printing
ROM & RAM test result printing
F Print area printing (one sheet)
01 20 06 25 11 1 21 01
02 21 07 26 12 2 22 02
03 22 08 27 13 3 23 03
04 23 09 28 14 4 24 04
05 24 10 29 15 5 25 05
Rapid FAX Rapid FAX Rapid FAX Rapid FAX
No. No. No. No. No. No. No. No.
04 : AUTO FEEDER MODE
04 : AUTO FEEDER MODE
B4 (A4 B4 ORG)
After setup of the document
Only the sensor which is
activated (fallen down) is displayed.)
The paper sheet size (A4/B4) is
displayed.

FO-4700TH
FO-47A4
2 – 5
9) Signal send mode
After shift to the mode, press the START key, and the signals will be
transmitted in the following sequence.
It can be used to check the modem and so on.
[ 1] No signals
[ 2] 4800BPS (V27ter)
[ 3] 14400BPS (V. 33)
[ 4] 12000BPS (V. 33)
[ 5] 14400BPS (V. 17)
[ 6] 12000BPS (V. 17)
[ 7] 9600BPS (V. 17)
[ 8] 7200BPS (V. 17)
[ 9] 9600BPS (V. 29)
[10] 7200BPS (V. 29)
[11] 4800BPS (V27ter)
[12] 2400BPS (V27ter)
[13] 300BPS (FLAG)
[14] 2100Hz (CED)
[15] 1100Hz (CNG)
10) Comm. check mode
1
Turn on the line monitor.
2 Turn off the COVER SHEET FUNCTION.
3 Set line equivalence at 0 km.
After the check, it is necessary to be sure to return the aforementioned
soft switches into the initial state.
(Clear the memory with the diagnosis.)
11) Memory clear
Clear the back-up memory to initialize the soft switches.
The flash memory will be initialized. Then, the initialized list be output.
12) Flash memory
The flash memory is checked.
The ordinary memories (ROM, SRAM, DRAM) are checked in the ROM
& RAM check process. The write/read test is taken every block to print
the result.
When an error occurs, the following error buzzer will sound.
During operation of this diagnosis, dual operation is not possible at all.
If this is excessively repeated, it will shorten the life of the flash memory.
13) All FAX/TEL. entry mode
The function is used to simplify the registration of FAX/TEL No. during
aging.
1 The diagnosis mode is activated. If anything is not registered in the
Rapid number 01 or any program or group is not registered, it will
pass the diagnosis without doing anything.
2 The FAX/TEL number (including the substitutive destination) of the
Rapid number 01 is copied to the Rapid numbers 02 thru 48.
3 FAX numberofthe Rapidnumber01 iscopiedtoSPEED keynumbers
001 thru 200.
4 If any chain dial is not in the Rapid number, the Rapid numbers 02
thru 48 and SPEED key numbers 001 thru 200 are registered in the
group number 01.
If any chain dial is set, the group will be not produced but the chain
dial setting alone of the Rapid number 01 will be reset.
(In all others except the Rapid number 01, the chain dials will be
continuously set as they are.)
(16th and subsequential letters of the destination name registered in the
Rapid number 01 will be discarded.)
14) Dept. passcode
The department passcode list is printed.
15) Conf. passcode
The confidential passcode list is printed.
Differing from printing of one box alone soon after registration, the con-
fidential passcodes of all boxes are printed.
16) Print hold code
The print lockout passcode No. is printed.
17) Memory set mode
The set and dump list of the memory content is output.
•The address (8 digits (P) generally including the bank information is
input, and the data of 2 digits is continuously input.
Inputting is done in the hexadecimal mode. The ten-key is used for 0
thru 9, and the alphabetic keys A (RAPID 01 thru 06) are used for A
thru F.
•During data inputting, the address can be moved forward and back-
ward one byte by one byte with " " and "#". (The address prior to the
address 0 is looped as the maximum address.)
•The Validity of the address is not checked. Accordingly, writing/ read-
ing operations are possible in the address of the memory not as-
signed, the address of ROM and so on.
(However, as practical, writing is not done, and the data content runs
short each reading.)
Though writing is possible in the flash memory, a little time is re-
quired.
It is also necessary to take care that the life of the flash memory is
excessively shortened if much data is written in the flash memory.
Since it may run away depending the written content, take minute
care for the writing address.
•When the REPORT key is input, the memory dump list is produced
from the displayed address (here, it is limited at the 16-byte bound-
ary address (address with end 0) which does not exceed the speci-
fied address and is just in front.). The dump list is output to a maxi-
mum of 99 pages. If any data of one page can be repeatedly devel-
oped and printed, the list is sufficient. But it is not desired that the
content of plural pages are developed in the memory once and are
then printed. If the STOP key is pressed, it will pass to the diagnosis
after the page which is now being printed is completed printed.
If the address exceeds the maximum address, it will return to the
address 0 and printing will be continued.
18) Stamp aging
Diag mode is left though it doesn’t have this function.
Rapid key RXX XX : Rapid number
SPEED key SXXX XXX
: Speed key number
Number of buzzer sounds Check device
9 times <Short sounds> Flash memory (Option)

FO-4700TH
FO-47A4
2 – 6
2-2. Print diagnosis
Rapid key 01: Area print mode
The effective printing area frame is printed in the specified sheet size.
The left pattern is repeated.
The left pattern is repeated.
The left pattern is repeated.
5. [Longitudinal strip 2 pattern]
Black 2 dot and white 2 dot are repeated in line.
6. [Lateral strip 2 pattern]
Black 2 line and white 2 line are repeated.
7. [Longitudinal strip 1 pattern]
Black 1 dot and white 1 dot are repeated in line.
8. [Lateral strip 1 pattern]
Black 1 line and white 1 line are repeated.
9. [Full White pattern]
Rapid key 02: Check pattern 1
The lateral stripe 2 pattern is printed on one sheet.
(Black 2 line and white 2 line are repeated.)
Rapid key 03: Check pattern 2
The lateral stripe 2 pattern is printed on multiple pages.
Press the STOP key to end the printing.
Rapid key 04: Check pattern 3
The intermediate tone 1 is printed on one sheet.
19) Dial test mode
The mode is used to inspect whether dialing is accurate in two kinds of
dial modes . All data which can be dialed in this mode are automatically
called up in both PB mode and DP mode.
When this mode is activated, the following operations will be automat-
ically executed . Whether the dialed content is right or not is judged with
the external instrument which is connected to the line cable.
1 After shift to the FAX diagnosis mode, press RAPID 24.
(Also switch the display with the [ ] and [#] keys.)
2 Press the START key.
3 Turn on CML, and dial the following in the PB mode.
1, 2, 3, 4, 5, 6, 7, 8, 9, , 0, #
4 Turn off CML 500 mS alone.
5 Dial the following in the DP mode.
1, 5, 9, 0
6 After dialing, turn off CML.
This mode uses the ordinary auto dial. (Accordingly, the signal sending
time and minimum pause are all the same as ordinary.
The measurement result in this mode is completely all the same as in
the ordinary dial mode.
Moreover, the same process as above is also done in the dial test mode
which is executed in the product check mode.
20) Copy diag mode
In order to shorten the process time during production, this mode is
usedto automatically switch the copymode. Threemenus areprovided.
1. 1 Set up two documents. (In case of two documents or more,
there is no problem.
2 Press the START key.
3 Copy1st documentinthe finemode/densityAUTO.(One sheet
is printed in the ordinary copy mode.)
4 Copy 2nd (subsequential) document in the intermediate tone
mode/densityDARK. (Inthe ordinarycopying mode,onesheet
isprinted whenthe RESOLUTIONkey ispressed threetimes.)
When copy test is tried during production or is checked in two modes
(fine and intermediate tones), this mode is provided to reduce the trou-
blesomework whichmakestheoperator standasideto changethemode.
Accordingly, the fine and intermediate tones are merely switched, and
the mode is not switched to another mode. (Input of the image quality/
density key is invalid.)
2. Try the copy in the mode fixed at COPY REDUCE 95% and fine
mode/density AUTO. At this time, don’t change the soft key of
COPYREDUCE. (Inputofthe imagequality/densitykey isinvalid.)
3. Continuously try the above items 1 and 2.
1. [Full black pattern]
2. [Intermediate tone 2 pattern]
3. [Intermediate tone 1 pattern]
4. [Mesh point pattern]
4mm ±2.5
4mm
4mm
208mm
4mm ±2
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