Sharp AL-1661CS User manual

CONTENTS
Parts marked with “ ” are important for maintaining the safety of the machine. Be sure to replace these parts
with the replacement parts specified to maintain the safety and performance of the machine.
SHARP CORPORATION This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SERVICE MANUAL
CODE : 00ZAL1661CS1E
DIGITAL MULTIFUNCTIONAL
SYSTEM
MODEL AL-1661CS
(AL-1661CS)
[ 1 ] GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
[ 2 ] SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
[ 3 ] CONSUMABLE PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
[ 4 ] EXTERNAL VIEWS AND INTERNAL STRUCTURES . . . . . . . . . 4 - 1
[ 5 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
[ 6 ] COPY PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1
[ 7 ] OPERATIONAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 1
[ 8 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 8 - 1
[ 9 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
[10] TEST COMMAND, FAX SOFT SWITCH, TROUBLE CODES . . 10 - 1
[11] USER PROGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1
[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
[13] CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 - 1
[14] FIRMWARE DOWNLOAD PROCEDURES. . . . . . . . . . . . . . . . . 14 - 1

CAUTION
This laser radiation is not a danger to the skin, but when an exact focusing of the laser beam is achieved
on the eye’s retina, there is the danger of spot damage to the retina.
The following cautions must be observed to avoid exposure of the laser beam to your eyes at the time of
servicing.
1) When a problem in the laser optical unit has occurred, the whole optical unit must be exchanged as a
unit, not as individual parts.
2) Do not look into the machine with the main switch turned on after removing the developer unit, toner
cartridge, and drum cartridge.
3) Do not look into the laser beam exposure slit of the laser optical unit with the connector connected
when removing and installing the optical system.
4) The middle frame contains the safety interlock switch.
Do not defeat the safety interlock by inserting wedges or other items into the switch slot.
LASER WAVE – LENGTH : 770 –795nm
Pulse times : 10.24µsec
Out put power : 0.15mW ± 0.01mW
CAUTION
INVISIBLE LASER RADIATION,
WHEN OPEN AND INTERLOCKS DEFEATED.
AVOID EXPOSURE TO BEAM.
VORSICHT
UNSICHTBARE LASERSTRAHLUNG,
WENN ABDECKUNG GEÖFFNET UND
SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT.
NICHT DEM STRAHL AUSSETZEN.
VARO !
AVATTAESSA JA SUOJALUKITUS
OHITETTAESSA OLET ALTTIINA
NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE ÄLÄ
KATSO SÄTEESEEN.
ADVARSEL
USYNLIG LASERSTRÅLNING VED ÅBNING, NÅR
SIKKERHEDSBRYDERE ER UDE AF
FUNKTION. UNDGÅ UDSAETTELSE FOR
STRÅLNING.
VARNING !
OSYNLIG LASERSTRÅLNING NÄR DENNA DEL
ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN. – STRÅLEN ÄR
FARLIG.
This product is a class 1 laser product that complies with 21CFR 1040 of the CDRH standard and
IEC825. This means that this machine does not produce hazardous laser radiation. The use of controls,
adjustments or performance of procedures other than those specified herein may result in hazardous
radiation exposure.

At the production line, the output power
of the scanner unit is adjusted to 0.57
MILLI-WATT PLUS 20 PCTS and is
maintained constant by the operation of
the Automatic Power Control (APC).
Even if the APC circuit fails in operation
for some reason, the maximum output
power will only be 15 MILLI-WATT 0.1
MICRO-SEC. Giving and accessible
emission level of 42 MICRO-WATT
which is still-less than the limit of
CLASS-1 laser product.
The foregoing is applicable only to the 220V
model, 230V model and 240V model.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA
KUIN TÄSSÄKÄYTTÖOHJEESSA MAINITULLA
TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN
TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE
NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅANNAT
SÄTT ÄN I DENNA BRUKSANVISNING
SPECIFICERATS, KAN ANVÄNDAREN UTSÄTTAS
FÖR OSYNLIG LASERSTRÅLNING, SOM
ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.
Caution
This product contains a low power laser
device. To ensure continued safety do not
remove any cover or attempt to gain access
to the inside of the product. Refer all
servicing to qualified personnel.
LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT

CONTENTS
[1] GENERAL
1. Major functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2. Note for servicing and handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[2] SPECIFICATIONS
1. Basic Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2. Operation specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3. Copy performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
4. SPLC (JBIG GDI) printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
5. Scan function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
6. RSPF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
7. Basic Specifications (FAX section) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
[3] CONSUMABLE PARTS
1. Supply system table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
2. Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3. Production control number(lot No.) identification . . . . . . . . . . . . . . . . 3-2
[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES
1. Appearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
2. Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
3. Operation panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4. Motors and solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
5. Sensors and switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
6. PWB unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
7. Cross sectional view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
[5] UNPACKING AND INSTALLATION
1. Copier installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
2. Cautions on handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
3. Checking packed components and accessories . . . . . . . . . . . . . . . . . 5-1
4. Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5. Removing protective packing materials . . . . . . . . . . . . . . . . . . . . . . . 5-2
6. Installing the TD cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
7. Loading the paper tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
8. Power to copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
9. Software for AL-1661CS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
A. Before installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
B. Installing the software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
C. Setting up button manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
10. Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
A. USB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
11. Moving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
B. RJ45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
[6] COPY PROCESS
1. Functional diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
2. Outline of print process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
3. Actual print process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
[7] OPERATIONAL DESCRIPTIONS
1. Outline of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
2. Scanner section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
A. Scanner unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
B. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
C. Drive system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
3. Laser unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
A. Basic structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
B. Laser beam path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
C. Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
4. Fuser section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
A. General description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
5. Paper feed section and paper transport section . . . . . . . . . . . . . . . . . 7-4
A. Paper transport path and general operations . . . . . . . . . . . . . . . . 7-4
6. Process unit new drum detection mechanism. . . . . . . . . . . . . . . . . . . 7-7
7. RSPF section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
A. Outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
B. Document transport path and basic composition . . . . . . . . . . . . . 7-7
C. Operational descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
D. Cases where a document jam is caused . . . . . . . . . . . . . . . . . . . 7-8
E. RSPF (SPF) open/close detection (book document detection) . . 7-8
8. D-D (Duplex to Duplex) mode paper/document transport
(Duplex model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
A. Initial state. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
B. Front copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
C. Back copy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
9. Shifter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
[8] DISASSEMBLY AND ASSEMBLY
1. High voltage section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
D. Charger wire cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
E. Charger wire replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
2. Operation panel section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
3. Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
4. Fusing section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
5. Tray paper feed/transport section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
6. Manual paper feed section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
D. Pressure plate holder attachment . . . . . . . . . . . . . . . . . . . . . . . . 8-14
7. Rear frame section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-15
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
8. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
9. Duplex motor section (RSPF model only) . . . . . . . . . . . . . . . . . . . . . 8-16
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
10. Reverse roller section (RSPF model only) . . . . . . . . . . . . . . . . . . . . 8-16
A. List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
B. Disassembly procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-16
C. Assembly procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
11. RSPF section (RSPF model only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
A. RSPF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
B. Intermediate tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
C. Upper cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
D. Pickup unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
E. Upper cover of the pickup unit. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
F. Sensor PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
G. Pickup solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
H. Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-19
I. Manual paper feed roller, pickup roller . . . . . . . . . . . . . . . . . . . . 8-19
J. Transport unit removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
K. Belt 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
L. Belt 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
M. SPF motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
N. Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
O. Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
P. Paper supply roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Q. Paper entry sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
R. Transport roller 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
S. Paper exit roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
T. Solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-23

[9] ADJUSTMENTS
1. Optical section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
A. Copy magnification ratio adjustment. . . . . . . . . . . . . . . . . . . . . . . 9-1
B. Image position adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
2. Copy density adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
A. Copy density adjustment timing . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
B. Note for copy density adjustment . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
C. Necessary tool for copy density adjustment . . . . . . . . . . . . . . . . . 9-4
D. Features of copy density adjustment . . . . . . . . . . . . . . . . . . . . . . 9-4
E. Copy density adjustment procedure . . . . . . . . . . . . . . . . . . . . . . . 9-4
3. High voltage adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
A. Main charger (Grid bias) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
B. DV bias check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
4. Duplex adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
A. Adjusting the paper reverse position in memory for
duplex copying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
B. Adjusting trailing edge void in duplex copy mode . . . . . . . . . . . . . 9-6
5. SPF (RSPF) scan position automatic adjustment . . . . . . . . . . . . . . . . 9-7
6. RSPF (SPF) mode sub scanning direction magnification
ratio adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
7. Automatic black level correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8
[10] TEST COMMAND, FAX SOFT SWITCH, TROUBLE CODES
1. Entering the test command mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
2. Key rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
3. List of test commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
4. Descriptions of various test commands . . . . . . . . . . . . . . . . . . . . . . 10-3
5. FAX soft switch setting change quick reference table. . . . . . . . . . . 10-38
6. Soft switch list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-39
7. Soft switch descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-58
8. Trouble codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-67
A. Trouble codes list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-67
B. Details of trouble codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-67
9. Communication error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-70
A. Error code identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-70
[11] USER PROGRAM
1. User programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
A. Copy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
B. Print mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
2. Selecting a setting for a user program . . . . . . . . . . . . . . . . . . . . . . . 11-2
[12] ELECTRICAL SECTION
1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
A. Overall block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
2. Circuit descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
A. Main PWB (MCU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2
B. DC power circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-11
[13] CIRCUIT DIAGRAM
1. MCU PWB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-1
2. FAX MAIN PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-25
3. OPERATION PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-31
4. FAX OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-34
5. NIC PWB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-35
6. POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-39
7. ACTUAL WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-41
[14] FIRMWARE DOWNLOAD PROCEDURES
1. Download procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-1
2. Version acquisition procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-2
3. EEPROM data acquisition procedure . . . . . . . . . . . . . . . . . . . . . . . . 14-3
4. Serial number setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-4
5. Installing procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-4

AL-1661CS GENERAL 1 - 1
[1] GENERAL
1. Major functions
Configurations
Descriptions of items
CPM: Copy speed (Copies Per Minute)
SB/MB: SB = Manual feed single bypass, MB = Manual feed multi bypass
2 tray: Second cassette unit
SPF: Original feed unit
R-SPF: Duplex original feed unit
Color scanner: Color scanner function
GDI printer: GDI printer function with USB
SPLC:SPLC printer function
E-SORT:Electrical sort
Duplex: Auto duplex copy function
Shifter: Job separator function
FAX: FAX function
Sharpdesk: Scanner utilities
IEEE1284: Interface port (parallel)
USB: Interface port (USB)
RJ45: Interface port (Network)
External NIC: Interface port (Network)
Descriptions of table
❍: Standard provision
✕: No function or no option available
Opt: Option
2. Note for servicing and handling
When the main unit power is repeatedly turned OFF/ON rapidly (for about 1sec), the IC (OA982) on the MCU PWB may malfunction to cause an error
(E1-00 Communication error), which does not boot the machine. In case of this error, the blank display is kept for several tens seconds and then "E1-
00" is displayed on the panel display.
<Countermeasure>
Turn off the power and keep it for more than 10sec. Then turn on the power.
When the machine is booted.: There is no problem in the MCU PWB.
When the machine is not booted.: The MCU PWB trouble
Item CPM /
PPM SB/
MB
2
Tray SPF R-SPF
Color
Scanner
(push)
GDI
printer SPLC E-SORT Duplex Shifter FAX Sharp
desk
IEEE
1284 USB RJ45 External
NIC
Model LT A4
AL-1661CS 16 15 MB ✕✕ ❍ ❍ ✕ ❍ ❍ ❍ ❍ ❍ ❍ ✕ ❍
(2.0)
❍
print only
✕
(AL-1661CS)

AL-1661CS SPECIFICATIONS 2 - 1
[2] SPECIFICATIONS
1. Basic Specifications
2. Operation specifications
Item
Type Desktop
Copy system Dry, electrostatic
Segment (class) Digital personal copier
Copier dimensions 20.4" (W) x 19.8" (D) x 18.3" (H) (518mm (W) x 503mm (D) x 465mm (H))
Weight (Approximately) 45.2 lbs. (20.5kg) Not includes toner cartridge
Section, item Details
Paper feed
section
Paper feed system 1 tray (250 sheets) + multi bypass (50 sheets)
AB system Tray paper feed
section
Paper size A4, B5, A5, 16K (Landscape)
Paper weight 56 - 80g/m2(15 - 21 lbs.)
Paper feed capacity 250 sheets
Kinds Standard paper, specified paper, recycled paper
Remark User adjustment of front paper guide available
Multi bypass paper
feed section
Paper size A4, B5, A5, B6, A6 (Post card), 16K (Landscape)
Paper weight 52 - 128g/m2(14 - 34.5 lbs.)
Paper feed capacity 50 sheets
Kinds Standard paper, specified paper, recycled paper, envelope,
OHP, Label (Single copy)
Remark User adjustment of side paper guide available
Inch system Tray paper feed
section
Paper size 8-1/2" x 14", 8-1/2 x 11", 8-1/2" x 5-1/2" (Landscape)
Paper weight 15 - 21 lbs.
Paper feed capacity 250 sheets
Kinds Standard paper, specified paper, recycled paper
Remark User adjustment of front paper guide available
Multi bypass paper
feed section
Paper size 8-1/2" x 14", 8-1/2 x 11", 8-1/2" x 5-1/2", 3-1/2" x 5-1/2"
(Landscape)
Paper weight 14 - 34.5 lbs.
Paper feed capacity 50 sheets
Kinds Standard paper, specified paper, recycled paper, OHP, Label,
Envelop (Single copy)
Remark User adjustment of side paper guide available
Paper exit section Exit way Face down
Capacity of output tray 200 sheets
Originals Original set Center Registration (left edge)
Max. original size A4 (8-1/2" x 14")
Original kinds sheet, book
Original size detection None
Optical
section
Scanning section Scanning system 3 CCDs (RGB) sensor scanning by lighting white lamp
CCD sensor Resolution 600 dpi
Lighting lamp Type CCFL
Voltage 560Vrms
Power consumption 2.8W
Output data R, G, B 1 or 8 bits/pixel / A/D 16bit
Writing section Writing system Writing to OPC drum by the semiconductor laser
Laser unit Resolution 600 dpi
Image forming Photoconductor type OPC (30ø)
Life 18k
Charger Charging system Saw -tooth charging with a grid, / (-) scorotron discharge
Transfer system (+) DC scorotron system
Separation system (-) DC scorotron system
Developing Developing system Dry, 2-component magnetic brush development system
Cleaning Cleaning system Counter blade system (Counter to rotation)

AL-1661CS SPECIFICATIONS 2 - 2
*1) May fluctuate due to environmental conditions and the input voltage.
3. Copy performance
Fusing section Fusing system Heat roller system
Upper heat roller type Teflon roller
Lower heat roller type Silicon rubber roller
Heater lamp type Halogen lamp
Voltage 120V
Power consumption 800W
Electrical section Power source Voltage 120V
Frequency 60Hz
Rated current 8A
Power consumption Max. Less than 1000W
Average (during copying) 350 Wh/H *1)
Average (stand-by) 86Wh/H *1)
Pre-heat mode 25Wh/H *1)
Auto power shut-off mode 8.8Wh/H *1)
Section, item Details
Copy magnification Fixed magnification
ratios
4 Reduction + 3 Enlargement
(AB system : 25, 50, 70, 86, 100, 141, 200, 400%)
(Inch system : 25, 50, 64, 78, 100, 129, 200, 400%)
Zooming
magnification ratios
OC: 25 - 400%, RSPF 50 - 200%
(376 steps in 1% increments)
Manual steps (text, photo) 5 steps
Copy speed First copy time Tray paper feed 9.6 sec. (Pre-heat mode:25 sec. / Auto power-shut-off mode : 40 sec.)
A4 or Letter/100%/Auto Exposure
AB system
A4
(Landscape)
Copy speed (CPM) Same size 15
Enlargement 15
Reduction 15
AB system
B5
(Landscape)
Copy speed (CPM) Same size 15
Enlargement 15
Reduction 15
Inch system
8-1/2" x 14"
(Landscape)
Copy speed (CPM) Same size 12
Enlargement 12
Reduction 12
Inch system
8-1/2" x 11"
(Landscape)
Copy speed (CPM) Same size 16
Enlargement 16
Reduction 16
Max. continuous copy quantity 99
Void Void area leading edge 1 - 4mm
Trailing edge 4mm or less, 6mm or less (Duplex copying/both image)
Side void area 0.5mm or more (per side)
4.5mm or less (total of both sides)
Image loss leading edge Same size: 3.0mm or less (OC) / 4.0mm or less (SPF/R-SPF/Duplex)
Enlarge: 1.5mm or less (OC) / 3.0mm or less (SPF/R-SPF/Duplex)
Reduction (50%): 6.0mm or less (OC) / 8.0mm or less (SPF/R-SPF/Duplex)
Warm-up time 0 sec.
Power save mode reset time 0 sec.
Paper jam recovery time 0 sec.
Section, item Details

AL-1661CS SPECIFICATIONS 2 - 3
4. SPLC (JBIG GDI) printer
*1: Engine Resolution
*2: Running change
5. Scan function
*1: Running change
6. RSPF
Print speed Max. 15ppm (A4 / with ROPM) / 16ppm (Letter / with ROPM)
First print time 9.6 sec. (without data transfer time)
Duplex Yes
ROPM Yes
CPU None
Memory Share the memory with E-SORT function
Interface RJ45 (10 base) / USB 2.0
Network Internal NIC
Emulation SPLC (JBIG GDI)
MIB support No
Resolution 600dpi *1
Supported OS Win 95 / 98 / Me / NT 4.0 / 2000 / XP
WHQL support Yes *2
Application Status window
Type Flat Bed Color Scanner
Scanning system Document glass/RSPF
Light source 3 CCDs (RGB) sensor scanning by lighting white lamp (2 pcs of CCFL)
Resolution Optical: 600 x 1200dpi
Setting range: 50 - 9600dpi (Preview resolution is fixed at 75dpi)
Originals Sheet type / Book type
Output data R, G, B 1 or 8 bits/pixel / A/D 16bit
Scan range OC / RSPF: 8.5" (297mm) (L) x 14" (431mm) (W)
Original position: Platen: Left center / SPF: Right center
Scan speed OC / SPF: Max. 2.88ms/line (Color/Gray scale), Max. 0.96 ms/line (B & W)
Protocol TWAIN / WIA (Only XP) / STI
Support file format RAW / JPEG
Interface USB2.0
Scanner utility Button Manager / Sharpdesk
Scan key/lamp Yes
Duplex scan No
Supported OS Win 98 / Me / 2000 / XP
Void area No (User settable by PC)
WHQL supported Yes *1
Original capacity 30 sheets (52 to 90g/m2) (14 to 23.9 lbs.)
Original size A4 to A5/10" x 14" to 5-1/2" x 8-1/2"
Original replacement speed 12CPM (A4/8-1/2" x 11"Landscape)
Job speed (Tray1,Landscape) Single copy S to S 12CPM
S to D 5.6CPM
D to S 5.5CPM
D to D 5.2CPM
Multi copy S to S 16CPM
D to S 16CPM
Original placement Face up
Original weight 52 to 90g/m2(14 - 23.9lbs.)
Mixed feeding No
Original which cannot Thermal papers, originals with punch holes for files, be used folded paper, transparent originals
such as OHP films, stapled or clip used originals with cover up liquid used, Originals with tape
sealed, originals with high level frictional coefficient such as photos or catalogs.

AL-1661CS SPECIFICATIONS 2 - 4
7. Basic Specifications (FAX section)
Large item Middle item Small item Sub item Specifications
Communication
system
Electronic
transmission system
Electronic
transmission time
Less than 3 sec (Super G3 mode, 33600bps)
Less than 7 sec (G3 ECM mode, 14400bps)
Compression/
Extraction system
MH, MR, MMR, JBIG
MODEM speed 33600bps - 2400bps (Automatic fall-back)
Mutual communication Super G3/G3
Used line Public switched telephone network (PSTN), Private
branch exchange (PBX)
Used line number 1 line
Connection form For 1 line of telephone;
•FAX machine
•External telephone
ECM Yes
Transmission
functions
Transmission
operation
Items which can be
selected and
registered by user
when transmitting
•Specifying the destination number
•Resolution
•Density
•Transmission start time
•Poling receive
•Cover addition setting
•Send document scan system
Auto send function Auto send function to a predetermined telephone
number
Application send
function
Chain dial Max. 50 digits
Rapid key dial Registration key One-touch key
Number of items Max. 18 items
Number of digits of
destination number
Max. 40 digits
Destination
registration name
Max. 20 characters
Retrieval characters 0 - 3 characters
Communication start
speed
Max. speed: 33600bps/ High speed: 14400bps/
Middle speed: 9600bps/ Low speed: 4800bps
International
communication mode
NO/ Mode 1/ Mode 2/ Mode 3
Transmission method One-touch dial key
Speed dial Number of items 100 items (Reduction number 00 - 99)
Number of digit of
destination number
40 digits
Destination
registration name
20 characters
Retrieval characters 0 - 3 characters
Communication start
speed
Max. speed: 33600bps/ High speed: 14400bps/
Meddle speed: 9600bps/ Low speed: 4800bps
International
communication mode
NO/ Mode 1/ Mode 2/ Mode 3
Transmission method Speed dial key + (00 - 99) + Start key
Group dial Registration key One-touch dial key
Number of groups
which can be
registered
18 items (One-touch dial + Group dial)
Destination
registration name
20 characters
Number of stations
which can be
registered in one
group
Max. 100 stations in one group (Max. total items
which can be registered: 150 items)
Numbers which can be
registered
Destination numbers registered in one-touch dial and
speed dial, 10-key dial
Retrieval characters 0 - 3 characters
Transmission method Group dial key
Address book send Retrieval target •Speed dial
•One-touch dial
•Group dial
Retrieval key SEARCH key
Retrieval character 0 - 3 characters

AL-1661CS SPECIFICATIONS 2 - 5
Send functions Document scan
function
Document size Max. document width Inch series: 8.5"
AB series: 210mm
Max. document length 500mm (Only form R-SPF, with user support)
Send document size AB series: A4
Inch series: Letter (8.5 x 11)/Legal (8.5 x 14) (Default:
Letter (8.5 x 11))
Document size
specification
Yes
Half-tone reproduction Half-tone 256 gradations
Resolution selection Manual 5 steps
Standard/Fine/Super Fine/Fine + Half-tone/Super
Fine + Half-tone (Default: Standard)
Scan density select
function
Density select Light/Medium/Dark
Scan resolution select
function
Selectable image
quality mode
Scan density
Resolution select Standard: 8dot x 3.85 line/mm
Fine: 8dot x 7.7 line/mm
Super Fine: 8dot x 15.4 line/mm
Half-tone: Scan in 256 gradations
Document table scan
(OC send) function
Book document scan/send function from the
document table (OC). In one send job, the send
document size is fixed.
Send document
information adding
function
Sender registration/
send function
Sender telephone
number
20 digits
Sender registration
name
40 characters
Send header function Header display
content
Sender number registered in sender registration/
Sender name/ Send date and time/ page
Page counter function Adding position Top right (The right edge)
Adding form P. XXX (Max. 999)
Cover adding function Display items •Date and time
•Destination name (Max. 20 characters)
•Destination number (Max. 40 digits)
•Sender name (Max. 20 characters)
•Sender number (Max. 20 digits)
•Send quantity (3 digits)
•Send message (When send message adding
function is used)
Send message adding
function
Fixed message NO MESSAGE/CONFIDENTIAL/PLS. DISTRIBUTE/
URGENT/PLS. CALL BACK/IMPORTANT
Index function Yes (Max. 10 kinds in printable area)
Basic send functions Direct send function Yes
Memory send function Send form
Number of items of
send reservation
•Send reservation
•Time specifying send
•Group send
•Serial broadcast
Max. 52 items (excluding redial)
Group send and broadcast are treated as one item.
Operation when
memory full
•Document scan stop
•Memory full display →Job continuation check
•Job continuation: Scanned document data are
sent.
•Job stop: Scanned document data are deleted.
•In either case, document is held in SPF and not
discharged.
Quick online send
function
Valid when memory mode is ON. Scan of send
document data and send are performed together.
Auto resend function When busy tone
detected
Redial is performed according to the setting of
"Number/interval of redial when busy."
When no response
(CED/ FSK signal are
not detected)
Redial is performed according to the setting of
"Number/ interval of resend in communication error."
Communication error
Long document send
function
Supports up to 500mm. When this length is
exceeded, "PAPER JAM" occurs.
Large item Middle item Small item Sub item Specifications

AL-1661CS SPECIFICATIONS 2 - 6
Send functions Application send
function
Manual send function This function allows to switch to FAX manually when
off-hook with document set.
Time specifying send
function
Available
communication
Memory send, Polling, serial broadcast, serial send
request
Number of set items Max. 5 items
Set range 00:00 - 23:59 (Unit: 1 min)
Day of week 8 kinds (From Monday to Sunday, and no
specification)
Group send function A message is sent sequentially to two or more
destinations registered in group dial. (Max. 52
destinations can be registered in one group.)
Serial broadcast
function
Broadcast send
destination
Max. 100 items
Duplex send function Valid only in duplex support models.
Direct send and scan from OC cannot be made.
Send document size A4/ Letter/ Legal size
Incoming
functions
system
Incoming detection
function
Call signal detection
function
Call bell is distinguished from net call signals to judge
incoming.
Remote select
function by CNG
detection
Receive is started when CNG signal is detected in
standby with external telephone used.
Application incoming
function
Distinctive Ring
function
Conforms to the call distinguishing function provided
by the local telephone company.
Call bell pattern OFF/STANDARD/Pattern 1 - 5
Incoming reject
function
Incoming is rejected when remaining memory
capacity is less than 7%.
Call sound volume
adjustment function
Volume select OFF/LOW/MIDDLE/HIGH
Alarm sound volume
adjustment function
Volume select OFF/LOW/MIDDLE/HIGH
Key sound volume
setting
Follows setting on the main unit.
Junk FAX protection
function
Junk stations are registered to be rejected.
Number of
registrations
Max. 10 items
Receive
functions
system
Receive function Receive standby
mode
•Auto (AUTO)
•Manual (MAN.)
•Answering machine (A.M.)
Basic receive function Auto receive function The line is switched to FAX by detection of call signal.
(receive standby mode)
Number of calls AUTO: 0 - 9 times (Default: 2 times)
Tel/FAX auto select No
Incoming reject
conditions
•During Test Command by serviceman
•Insufficient memory capacity
•During menu
•During memory status display
Manual receive
function
Receive is manually started.
Number of calls 0 - 9 times (Default: 0 times)
Basic receive function Memory receive
function
Receive data are accumulated in memory, and
outputted when output conditions are satisfied.
Substitution receive
function
Countermeasure against print inhibit state.
•No recording paper
•Recording paper jam
•During copy/print job
•During printing by printer
•Cover open
•Paper empty, size error
Forcible memory
receive function
No
Overtake output
function
No
Large item Middle item Small item Sub item Specifications

AL-1661CS SPECIFICATIONS 2 - 7
Receive
functions
system
Receive document
output function
Auto reduction/
divided receive
function
Auto reduction
function
When the reference line number is in the specified
range.
Divided receive
function
When the reference line number exceeds the
specified range.
Polling receive
function (Send request
function)
The remote machine must be provided with polling
function. Communication is allowed with an other
company machine.
Sequential send
request (Polling)
communication
Polling is made to two or more specified destinations.
Number of items of destination registration: Max. 100
items
Remote send Scanned document data in memory are sent
automatically by send request from the remote
machine.
Protection function •Check by sender number
•Check by allow number
Print system Recording paper Recordable size A4/8.5 x 11/8.5 x 14
Recording paper
setting
AUTO/TRAY 1/TRAY 2
(In AUTO, TRAY1 has priority.) (Default: AUTO)
Paper feed Paper feed by tray (Excluding multi manual feed)
Recording paper size
detection
The recording paper length is detected. If the size
differs, a paper size error occurs.
Recording paper
empty detection
Detected by a paper pickup error.
Duplex receive Available only in the duplex function support models.
Transfer function Receive data are transferred to the registered station.
Number of registered
transfer destination
1 item
Registered telephone
number
40 digits
Local transfer Countermeasures against an error
•Paper jam
•No toner cartridge
•No toner
•During toner supply
•CRU life
•No recording paper
Telephone
functions
system
Main unit telephone
function
On-hook dial function Yes
Manual redial function Max. memory digit 50 digits
Display digits End 20 digits
Pause function Yes (Fixed to 2sec)
Pulse/Tone select
function
Yes
External telephone
connection function
Select function by
DTMF
Select number (1 digit) + [**] (0 - 9)
Record table
system
Report list Report output function Report select •TIMER LIST
•ACTIVITY REPORT
•TELEPHONE# LIST
•GROUP LIST
•PASSCODE LIST
•JUNK FAX# LIST
•USER PROGRAM LIST
Recording table auto
print function
Number of items Auto print for every 50 items of send/receive total.
Communication report
list
Report select •Send report list
•Receive report list
•Serial broadcast send report list
•Image memory addition
Print status select •ALWAYS PRINTS
•ERROR ONLY
•NEVER PRINTS
Large item Middle item Small item Sub item Specifications

AL-1661CS SPECIFICATIONS 2 - 8
Memory
functions
system
Memory outline Memory capacity Standard memory 2MB
Option No
Document quantity to
be stored
A4 standard documents 120 pages
Data storage area/
backup when service
interruption (Recorded
data, receive data)
Image data Flash memory (Data are retained when the power is
turned off or when the battery is exhausted.)
Data other than image SRAM (Data are retained when the power is turned
off, but deleted when the battery is exhausted with
the power OFF.)
Treatment when
memory full
Quick online Memory full on the first
page
Send cancel without call-out
Memory full on the
second or later page
The line is shut-off after sending the last page of
scanned data.
Memory send Memory full on the first
page
Send cancel
Memory full on the
second or later page
Send/Cancel is selected depending on the select
menu display.
Send: The line is shut off after sending the scanned
data.
Cancel: Cancel even scanned data.
Memory status check
function
Yes (The remaining memory capacity (%) is
displayed on the LCD.)
Memory content check
function
Not-sent job is displayed on the LCD. (Cancel is
possible.)
Document jam Error LED, LCD message are displayed.
Service
functions
system
Test command
function
Send/receive of specified signals, commands, and
image data are performed without a remote machine.
Counter function Communication
counter
•Number of send pages
•Number of receive pages
•Number of output pages
•Send time
•Receive time
Others Environmental
functions
Auto clear Conforms to the main unit setting. When the
operation is left for 1 min or more, the display returns
to the main menu.
Auto shut -off Conforms to the main unit setting.
Date and time setting
function
Month/ Day/ Year/ Day of week/ O'clock/ minute
Image priority function STANDARD/FINE/SUPER FINE
BEEP LENGTH
(Communication end
sound length) setting
3SEC/1SEC/NO BEEP
Auto summer time
setting
First Sunday of April AM2:00 →3:00,
Last Sunday of October AM2:00 →1:00
(Default: OFF)
Multi language
function
Conforms to the main unit setting.
Large item Middle item Small item Sub item Specifications

AL-1661CS CONSUMABLE PARTS 3 - 1
[3] CONSUMABLE PARTS
1. Supply system table
Common to all destinations
2. Environmental
The environmental conditions for assuring the copy quality and the machine operations are as follows:
(1) Normal operating condition
Temperature:20 - 25°C
Humidity:65 ± 5%RH
(2) Acceptable operating condition
(3) Transport condition
(4) Supply storage condition
No. Name Content Life Product name Package
1 Develop cartridge (Black) x 1
(Except Europe)
Toner/developer cartridge x 1
(Toner: Net weight 124g) (Developer: Net weight 190g)
4K
(5% document)
AL-110TD 5
2 Drum cartridge Drum cartridge 18K AL-100DR 5
Humidity (RH)
85%
60%
20%
10˚C 30˚C 35˚C
Humidity (RH)
90%
60%
15%
–25˚C30˚C40˚C
Humidity (RH)
90%
20%
–5˚C45˚C

AL-1661CS CONSUMABLE PARTS 3 - 2
3. Production control number(lot No.) identification
<Developing cartridge>
* Destination
<Drum cartridge>
The label on the drum cartridge shows the date of production.
(SOCC production)
<JAPAN production>
*1 The production control label is not attached to the cartridge of a
China product.
Division No.
EX Destination A same pack G
B same pack H
Option Destination A P
BQ
Division No.
Ex production 1
Option 2
Same pack 3
Production month
Production day
Destination code
(Dealer, distributor, OEM, etc.)
Production place
(SOCC: Fixed to B.)
End digit of year
Version No.
Production month
Production day
Destination code
(Dealer, distributor, OEM, etc.)
Production place
(SOCC: Fixed to B.)
End digit of year
Version No.
X000119Ver.A 1
Production month
(1 - 9 = Jan. - Sep. 0 = Oct. X = Nov. Y = Dec.)
Serial number of month
Fixed to 1.
Pack division
(See table below)
End digit of year
Version No.
Production control
label attachment position
Production control
label attachment position(*1)

AL-1661CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 1
[4] EXTERNAL VIEWS AND INTERNAL STRUCTURES
1. Appearance
2. Internal
1 Document glass 2 FAX operation panel 3 Operation panel
4 Front cover 5 Paper tray 6 Side cover
7 Side cover open button 8 Bypass tray paper guides 9 Bypass tray
10 Reversing tray 11 Original guides 12 Document feeder cover
13 Document feeder tray 14 Exit area 15 Paper output tray
16 Paper output tray extension 17 Power switch 18 Handles
19 Power cord 20 USB port 21 LAN port
22 Telephone line port 23 External telephone line port 24 Paper holding arm
1 Side cover 2 Fusing unit release lever 3 Transfer charger
4 Charger cleaner 5 Front cover
3
4
5
1
2
6
8
7
9
RSPF
10
11
12
13
14
Interface
15
16
17
18
19
20
21
18
24
LINE
TEL
22
23
TD cartridge Drum cartridge
1
5
2
3
4

AL-1661CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 2
3. Operation panel
1[MODE SELECT] key / Mode indicators
Press this key to select the mode. The indicator of the selected mode
lights (copy, printer, scanner, fax).
2Display
This shows messages indicating the machine status and any
problems that occur, as well as user programs and function setting
menus.
3Numeric keys
Use these to enter the number of copies and other numerical
settings.
The keys can also be used to select items in function setting menus.
4[CLEAR] key ( )
Use this to clear the set number of copies, as well as cancel a job
that is in progress. When a setting menu appears, use this key to
move back to the previous menu level.
5Power save indicator
This lights up when the power save function is activated.
6RSPF indicator
This lights up when an original is placed in the RSPF.
7Error indicator
This lights steadily or blinks when a paper misfeed or other error
occurs.
8[TRAY SELECT] key ( )
Use to select the paper tray that has the desired paper for copying.
9Tray location indicator
Indicates the selected paper tray. The indicator blinks when the tray
is out of paper or is not closed.
10 [MENU] key
Press this key to select the paper size for copying, to configure a
user program or to display the total count.
11 [2-SIDED COPY] key
Use to copy both sides of an original.
12 [E-SORT/SP.FUN] key
Press to select the sort function, 2 in 1 copy function, or margin shift
function.
13 [ ] key ( ), [ ] key ( ), [ENTER] key
Press the [ ] key ( ) or [ ] key ( ) to select an item in a
function setting menu.
Press the [ENTER] key to enter a selection.
14 [EXPOSURE] key
Use to switch from auto exposure adjustment to text mode or photo
mode.
15 [COPY RATIO] key
Press to select an enlargement or reduction ratio.
To select a preset ratio setting, press the [COPY RATIO] key and
select the desired preset ratio. To select a ratio that is not preset,
press the [COPY RATIO] key, select the preset ratio that is closest to
the desired ratio, and then press the [ ] key ( ) or [ ] key ( )
to increase or decrease the ratio in increments of 1%.
16 [START] key ( ) / Ready indicator
The ready indicator lights up when copying or scanning is possible.
To begin copying, press the [START] key ( ).
The [START] key ( ) is also pressed to return to normal operation
from auto power shut-off mode.
Press this key to start FAX send and FAX manual receive, etc.
17 [CLEAR ALL] key ( )
This returns all functions to the default settings. When pressed in a
setting menu, this returns the settings and display to the initial state.
18 Shows the current copy ratio.
19 Shows the selected paper size. 20 Shows the number of copies that has been entered with the numeric
keys.
21 A checkmark " " appears when the exposure has been changed, or
when two-sided copying, sort, 2 IN 1, or margin shift is selected.
22 One Touch keys
Used to dial automatically to a registered destination.
23 [MEMORY] key
Used to turn ON/OFF the memory mode.
24 [SPEED/SEARCH] key
Press this key to dial to a number registered as a reduction number.
Also used to delete a mistaken input of character and number. To
retrieve a registered FAX number, press this key twice.
25 [BROADCAST] key
Used to send FAX message to two or more destinations.
26 [RECEPTION MODE] key
Press this key to select the reception mode.
27 [REDIAL/PAUSE] key
Press this key to dial again to the destination which was previously
dialed to.
Press this key to insert pause when dialing. (2sec)
28 [RESOLUTION] key
Used to change the FAX resolution.
When this key is pressed, the LCD display is shifted sequentially.
Standard →Fine →Superfine →Fine + Half-tone →
Superfine + Half-tone
29 [CONTRAST] key
Used to adjust the density in FAX send.
30 [COVER SHEET] key
Used to add a cover page and message.
31 [REPORT] key
Used to print reports.
32 [2-SIDED TX] key
Press this key to send duplex document.
33 [SHIFT] key
Used in combination with the one-touch key to select one-touch
destination umber 10 –18.
34 [SPEAKER] key
Press this key to allow manual dialing.
READY TO COPY.
100% 8.5x11 0
Display
AL-1661CS
6 7 8 9 10 11 12 13 14 15 16 17
18 19 20 21
12345
01
10
02
11
03
12
04
13
05
14
06
15
07
16
08
17
09
18 SHIFT
MEMORY SPEED/
SEARCH BROAD- CAST
RECEPTION
MODE
REDIAL/
PAUSE
RESOLU-
TION
CONTRAST
COVER
SHEET REPORT
2-SIDED TX
LINE STATUS
SPEAKER
22
32
31
23 24 25 26 27
34
28 29 3033

AL-1661CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 3
4. Motors and solenoids
No. Part name Control signal Function / Operation
1 Main motor MM Drives the copier.
2 Scanner motor MRMT Drives the optical mirror base (scanner unit).
3 Toner motor TM Supplies toner.
4 Cooling fan motor VFM Cools the optical section.
5 Resist roller solenoid RRS Resist roller rotation control solenoid
6 Paper feed solenoid CPFS1 Cassette Paper feed solenoid 1
7 Multi paper feed solenoid MPFS Multi manual pages feed solenoid
8 SPF motor SPFM Drives the single pass feeder
9 Duplex motor DMT Devices the duplex paper transport section
10 Original feed solenoid SPUS Original pick up solenoid
11 SPF paper feed solenoid SPFS Original feed solenoid
12 SPF gate solenoid SGS Controls the document reverse gate.
13 Shifter motor SFTM Drives the shifter.
1
4
8
11
2
12
13
9
10
5
7
6
3

AL-1661CS EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 4
5. Sensors and switches
No. Name Signal Type Function Output
1 Scanner unit home position
sensor
MHPS Transmission sensor Scanner unit home position detection "H" at home position
2 POD sensor POD Transmission sensor Paper exit detection "H" at paper pass
3 PPD2 sensor PPD2 Transmission sensor Paper transport detection 2 "L" at paper pass
4 Cassette detection switch CED1 Micro-switch Cassette installation detection "H" at cassette insertion
5 PPD1 sensor PPD1 Transmission sensor Paper transport detection 1 "L" at paper pass
6 Door switch DSW Micro-switch Door open/close detection
(safety switch for 24V)
1 or 0V of 24V at door open
7 Drum reset switch DRST Micro-switch New drum detection switch Instantaneously "H" at insertion of
new drum
8 SPF sensor SPID/
SD SW
Transmission sensor Paper entry detection
Cover open/close detection
"L" at paper pass
9 SPPD sensor SPPD Transmission sensor Paper transport detection "L" at paper pass
10 PD1 sensor PD1 Micro-switch Paper width detect "H" at B4 size or less
"L" at B4 size or more
1
9
8
2
3
4
5
10
6
7