Sharp AL-841 User manual

CODE: 00ZAL841//F1E
DIGITAL LASER
MULTIFUNCTION
MODEL AL-841
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
[ 1 ] SYSTEM CONFIGURATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
[ 2 ] SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
[ 5 ] EXTERNAL VIEW AND INTERNAL STRUCTURE. . . . . . . . . . . . 2
[ 6 ] MACHINE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
[ 7 ] ADJUSTMENTS, SETTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
[ 8 ] SIMULATION (Test Command) ⋅USER PROGRAM . . . . . . . . . . 5
[ 9 ] ACTUAL WIRING CHART. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
[10] CIRCUIT DIAGRAM AND PARTS LOCATION CHART . . . . . . . 10
PARTS GUIDE
This Service Manual describes only the different points from the AL-840.
For servicing of the AL-841, therefore, use this Service Manual together
with that of the AL-840.
CONTENTS
AL-841

At the production line, the output power of
the scanner unit is adjusted to 0.33
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 an acceptable 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.
Laserstrahl
CAUTION
VORSICHT
ADVARSEL
ADVERSEL
VARNING
OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRRAR ÄR
URKOPPLADE. STRÅLEN ÄR FARLIG.BETRAKTA EJ STRÅLEN.
USYNLIG LASERSTRÅLNING VED ÅBNING. NÅR SIKKERHEDSBRYD-
ERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE FORSTRÅLNING.
UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEÖFFNET UND SICH-
ERHEITSVERRIEGELUNG ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS
DEFEATED AVOID EXPOSURE TO BEAM.
Caution
VARO!
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
NÄKYMÄTÖNTÄ LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG SIKKERHEDSLÅS BRYTES.
UNNGÅ EKSPONERING FOR STRÅLEN.
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
The fusing unit is hot. Exercise care when inspecting it.
Do not switch the printer rapidly on and off. After turning the printer off,
wait 10 to 15 seconds before turning it back on.
Printer power must be turned off before installing any supplies.
Wave length
Pulse times
Output Power
780 ± 15nm
(9.3 ± 2µs)/7mm
0.4mW ± 0.05mW
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA
KUIN TÄSSÄ KÄYTTÖOHJEESSA MAINITULLA
TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN
TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE
NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT
SÄTT ÄN I DENNA BRUKSANVISNING
SPECIFICERATS, KAN ANVÄNDAREN UTSÄTTAS
FÖR OSYNLIG LASERSTRÅLNING, SOM
ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.
CLASS 1
LASER PRODUCT
LASER KLASSE 1
AL-841

[1] SYSTEM CONFIGURATION
3. SOFTWARE
Items Contents Media
GDI Printer driver Printer driver CD-ROM
Twain driver Scanner driver
4. OPERATING ENVIRONMENT
(1) System requirements
Host computer Operating system Emulation Plug and play Network
IBM PC/AT or
100% compatible
(Supported ECP mode)
MS-DOS 3.3 +
MS-Windows 3.1X or later
MS-Windows 95/98
MS-Windows NT 4.0
Sleek type GDI (Printer)
Twain (Scanner) Supported Not supported
∗MS-DOS 3.3 + (Printer only)
(2) Interface
Type Host computer Operating system Protocol
IEEE1284P ×1 IBM PC/AT or
100% compatible MS-DOS 3.3 + MS-Windows 3.1X or later
MS-Windows 95/98
MS-Windows NT 4.0
Peppy
Nibble
ECP
[2] SPECIFICATIONS
D. Scanner mode
(1) System requirements
a. Operating conditions
Host computer Operating system Software/Driver Plug and play Network
IBM PC/AT or compatible
(Supported ECP mode) Windows 3.1x Twain driver Supported Not supported
Windows 95/98
Windows NT 4.0
b. Interface
Type Host computer Operating Protocol
IEEE 1284 P IBM PC/AT or compatible Windows 3.1x ECP
Windows 95/98
Windows NT 4.0
AL-841
– 1 –

[5] EXTERNAL VIEW AND INTERNAL STRUCTURE
B. Internal parts
(1) Parts in each section
c. Optical section
<1> Scanner (reading) section
No. Parts Note
Code Signal
name Name Type Function/operation Active condition
1 Scanner lamp
control PWB Drives the scanner lamp. Maintains the lamp light quantity at a constant
level.
2 Scanner drive wire Transmits the scanner motor power
to the scanner unit.
3 Scanner motor Drives the scanner unit.
4 MHPS MHPS Scanner home
position sensor Photo transmission
sensor
Detects the scanner home position.
By this signal the image scanning
operation is controlled.
HIGH (5V) when
the home position
is detected.
5 Lens Transfers the document image to
CCD.
6 CCD
SENSOR CCD OUT CCD (Image) sensor CCD Scans the document images (photo signals) and converts them into
electrical signals.
Digital signal (8Bit)
7 Scanner lamp Radiates light to the document to
allow the CCD to scan the document
images.
8 SL SENSOR PDA/PDK Scanner lamp light
quantity sensor Photo diode Detects the scanner lamp light quantity. This signal is inputted to the
scanner lamp control PWB to control
the scanner lamp drive voltage to
maintain a constant level of light
quantity.
Analog signal
(0 ∼0.5V)
9 No. 1 mirror Leads the document image to CCD.
10 No. 2 mirror Leads the document image to CCD.
11 No. 3 mirror Leads the document image to CCD.
10)
11)
8) SL SENSOR
9)
7)
6) CCD SENSOR
5)
4) MHPS
10) 8) SL SENSOR 7) 6) CCD SENSOR
11) 9) 5) 3)
2)
3)
2)
1)
4) MHPS
AL-841
– 2 –

C. Functional parts
(5) PWB
No. Parts MODEL Note
Name Function/operation
1 Power PWB Outputs DC power. Drives the heater lamp. The voltage specification differs
depending on the destination.
2 Scanner lamp drive
PWB Controls light quantity of the scanner lamp.
3 ICU PWB Converts print data set from the host and converts it into bit
image data and send to the MCU. Allows connection with one host computers. Printer models
only
4 MCU (PCU) PWB Controls the image process section and the engine section.
5 High voltage power
PWB Outputs the high voltage for the image process section. Controls the main motor.
6 Operation control PWB Displays the value information. Outputs the key operation
signal.
(11) Adjustment volume
No. Parts Note
Code Name Function/operation
1 VR1 Scanner lamp light quantity adjustment
volume Adjusts the scanner lamp light quantity.
2 VR601 Output voltage adjustment volume Adjust the DC output voltage (+24V).
VR801 Main charger voltage adjustment volume Adjusts the main charger voltage.
VR802 Developing bias voltage adjustment
volume Adjusts the developing bias voltage.
1)
2)
3)
4)
5)
6)
1)
VR601 VR802
VR801
AL-841
– 3 –

[6] MACHINE OPERATION
Machine condition READY
LAMP
ON
LINE
LAMP
3 GREEN
7
SEGMENT
LED
PRE-
HEAT
LAMP
JAM
LAMP
TONER
CERTRIDGE
REPLACE-
MENT LAMP
DRUM
CERTRIDGE
REPLACE-
MENT LAMP
Copy
lamp NOTE
Scanner operation
Scanning cannot be
performed. (OFFLINE) ON OFF — OFF OFF OFF OFF ON
Scanning can be
performed. (ONLINE) ON ON — OFF OFF OFF OFF ON
During scan/preview OFF ON — OFF OFF OFF OFF ON
[7] ADJUSTMENTS, SETTING
ADJ M9 Copy lamp light quantity adjustment
∗Location value
Range (MIN) 3.9 V
Range (MAX) 4.1 V
Standard value 4.0 V
Default 4.0 V
∗Program used
Test command (Simulation) MODE Normal
MAIN CODE 63
SUB CODE 1
∗Enforcement time
Enforcement
time JOB No Content
S 004/Ua
001/
P 002
When replacing the scanner
(copy) lamp control PWB
When replacing the copy lamp
In case of E7 (05) trouble
In case of E7 (04) trouble
In case of E7 (12) trouble
In case of E7 (15) trouble
Cycle —
Condition Normal copy exposure is not
obtained.
∗Necessary condition
1) The scanner section must be clean.
∗Job content
1) Put an oscilloscope between the check point JP2 (VIN) on the
MCU (PCU) PWB and GND.
At that time, trigger with the SH (JP3) signal to see the waveform
correctly.
2) Execute simulation 63-1. (The copy lamp lights up in the scanner
unit home position.)
JP2 (VIN) JP3 (SH)
JP1 (GND)
AL-841
– 4 –

3) Turn and adjust the volume on the copy lamp drive PWB so that
the CCD output waveform max. value is 4.0 ±0.1 V. ∗Trouble caused y improper operation
1) E7 (05) trouble
2) E7 (04) trouble
3) E7 (12) trouble
4) E7 (15) trouble
5) Copy exposure cannot be adjusted.
6) Copy exposure abnormality
∗Preliminary work
JOB No Content
S 004 Scanner (reading) section cleaning
∗After-work
JOB No Content
ADJ M1 Copy exposure adjustment
∗Necessary tools
Name Oscilloscope
Parts code/Price rank —
[8] SIMULATION (Test Command) ⋅USER PROGRAM
(2) Simulation list
Code Function (Purpose) Purpose Section Item
Main Sub
22 4 Used to check the number of total mis-feed (jam) in the
machine. Operation data output/ Check (Display/Print) Trouble Misfeed
14 Used to check the ROM version. Others Software
17 Used to check the copy count number. Operation data output/
Check (Display/Print) Counter Copier
18 Used to check the print count number. Operation data output/
Check (Display/Print) Counter Printer
21 Used to check the frequency of use (scanning) of the
scanner (reading). Operation data output/ Check (Display/Print) Optical (Image scanning) Counter Scanner
24 1 Used to clear the mis-feed (jam) counter in the machine. Data clear Counter
8 Used to clear the copy counter. Data clear Counter Copier
9 Used to clear the print counter. Data clear Counter Printer
26 2 Used to set Enable/Disable of the SPF and the FAX
functions. (When a trouble occurs in the SPF and the
FAX section, disable those functions to allow only copying
and scanning functions.
Setting ADF/RADF/UDH/SPF Specifications
6 Used to set the specifications depending on destination. Setting Specifications Destination
7 Used to set the model (hardware) specifications. Setting PCU Specifications Operation mode
(Common)
(3) Details of simulations
22
22 -4
Purpose Operation data output/Check (Display/Print)
Function
(Purpose) Used to check the number of total mis-feed (jam) in the machine.
Item Trouble Misfeed
Operation/
Procedure The JAM counter value is displayed in 3 digits ×2 times.
Display example: 12345
012 →Blank →345 →Blank →012
0.7s 0.3s 0.7s 1.0s 0.7s
22 -14
Purpose Others
Function
(Purpose) Used to check the ROM version.
Section PCU
Item Software
Operation/
Procedure The ROM version on the MCU PWB is displayed in 3 digits on the copy quantity display.
If any trouble occurs in the software operation, check
the version with this simulation.
4.0±0.1V
AL-841
– 5 –

22 -17
Purpose Operation data output/Check (Display/Print)
Function
(Purpose) Used to check the copy count number.
Item Counter Copier
Operation/
Procedure The display format and the method are same as SIM 22-5 (Total printer counter display).
22 -18
Purpose Operation data output/Check (Display/Print)
Function
(Purpose) Used to check the print count number.
Item Counter Printer
Operation/
Procedure The display format and the method are same as SIM 22-5 (Total printer counter display).
22 -21
Purpose Operation data output/Check (Display/Print)
Function
(Purpose) Used to check the count of use (count of scanning) of the scanner (reading) unit.
Section Optical (Image scanning)
Item Counter
Operation/
Procedure The display system and the method are the same as those of SIM 22-5 (Total print counter display).
24
24 -1
Purpose Data clear
Function
(Purpose) Used to clear the mis-feed (jam) counter in the machine.
Item Counter
24 -8
Purpose Data clear
Function
(Purpose) Used to clear the copy counter.
Item Counter Copier
24 -9
Purpose Data clear
Function
(Purpose) Used to clear the print counter.
Item Counter Printer
26
26 -2
Purpose Setting
Function
(Purpose) Used to set Enable/Disable of the SPF and the FAX functions. (When a trouble occurs in the SPF and the
FAX section, disable those functions to allow only
copying and scanning functions.
Section ADF/RADF/UDH/SPF
Item Specifications
Operation/
Procedure When this simulation is executed, the code of current setup of ENABLE/DISABLE of SPF/FAX function is
displayed.
Enter the desired code number corresponding to Enable/Disable
setup and press the Start button, and the setup will be effective.
Set code number SPF/FAX function
0 Disable
1 Enable
26 -6
Purpose Setting
Function
(Purpose) Used to set the destination.
Item Specifications
Operation/
Procedure 1) The currently set code of the destination is displayed.
2) To change the set content, enter the code of your desired
setting and press the start button.
Destination code Detected paper size
Set
value Destination Paper
type Paper width detector ON Paper width detector OFF
0Inch
series 11 58.5/ 14 58.5 8.5 55.5/ 8.5 511
1 EX Japan AB
series A4 (210 5
356 mm) A5
2 Japan AB
series A4 (210 5
356 mm) B5
When the set value is changed, the paper size specification and the
fixed, enlarged, and reduced copy magnification ratios are changed.
26 -7
Purpose Setting
Function
(Purpose) Used to set the model (hardware) specifications.
Section PCU
Item Specifications Operation mode (Common)
Operation/
Procedure When this simulation is executed, the monitor lamp corresponding to the model (hardware) is displayed.
Copy quantity display Copy speed (CPM)
66cpm
88cpm
AL-841
– 6 –

AL-841

1 2 3 1 2 3 4 1 2
AC GND AC MA MA- MB MB- 24V PUS
NC 1 1 NC 24V(DSW) 1
D-GND 2 2 D-GND DGND 2
D-GND 3 3 D-GND DGND 4 3
5V 4 4 5V 5V
5V 5 5 5V MEN- 5
3.3V 6 6 3.3V MMT1 6
1 HL-L (100V) 12V 7 7 12V MMTO 7
2HL-N (200V) FW 8 8 FW PIN 8
3HL-L (200V) PR 9 9 PR 3.3V 9
4 HL-N (100V) HL 10 10 HL 12V 10
24VH 11 11 24VH FW 11
24VH 12 12 24VH 24VH 12
P-GND 13 13 P-GND PGND 13
1 L-IN P-GND 14 14 P-GND PGND 14
2 L-OUT P-GND 15 15 P-GND MCON 15
3 N-IN P-GND 16 16 P-GND HLON 16
4 N-OUT 24V(DSW) 17 17 24V(DSW) TC/BIA
S
17
24V(DSW) 18 18 24V(DSW) PUS 18
24V(DSW) 19 19 24V(DSW) PR 19
PWNSIN 20
24V NC 24VS
1 2 3
POWER-SW
HEATER
DC-
BIASS
FU
EARTH
MC
DRUM
EARTH
TC
CN805CN804
CN802 CN803
CN601
CN801
CN603
CN602
CB
Power
supply
PWB
Developing cartridge
Photoconductor cartridge
Developing roller
Earth sheet
Main charger roller
Drum
Discharge brush
(Japan only)
Separation electrode
Main
motor
Copy roller
High
voltage
PWB
PID sensor
Temperature fuse
GND
5V
PUS
[9] ACTUAL WIRING CHART
AL-841
– 7 –

1 2 3 4 5
GND PMD 24V PMCLK GND
5VL 1 1 5VL
SYNC 2 2 SYNC
GND 3 3 GND
D-GND A-GND CCDOUT A-GND A5V 5V 12V D-GND f1 D-GND f2 D-GND SH- D-GND RS D-GND SP D-GND CP D-GND NC D-GND 24V(DSW) D-GND VDATA SAMP SYNC-IN APCSTT PMCLK PMD- PEMP-IN
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22
1 2 3 4 5 6 7 8
9
1 2
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22
AN-GND PSIZE-IN GND A-GND CCDOUT A-GND A5V 5V 12V GND f1 GND f2 GND SH- GND RS GND SP GND CP GND NC GND 24V(DSW) D-GND VDATA SAMP SYNC-IN APCSTT PMCLK PMD- PEMP-IN OUT A OUT B OUT/A
1 2 3 4 5 6 7 8 9 1 2 3 4 5
OUT/B 24V-mir
1 24V(DSW)
2 DGND D-GND 1 1 D-GND
3
4DGND 5V1 2 2 5V1
5V KIN3 3 3 KIN3
5 MEN- KIN2 4 4 KIN2
6 MMT1 KIN1 5 5 KIN1
7 MMTO OP-CLK 6 6 OP-CLK
8 PIN OP-LATCH 7 7
88
OP-LATCH
9 3.3V OP-DATA OP-DATA
10 12V STR1 9 9 STR1
11 FW STR2 10 10 STR2
12 24VH STR3 11 11 STR3
13 PGND STR4 12 12 STR4
14 PGND
15 MCON
16 HLON
17 TC/BIAS
18 PUS
19 PR VFMOUT 1 1 VFMOUT
20 PWNSIN NC 2 2 NC
NC 3 3 NC
P-GND 4 4 P-GND
NC 5 5 NC
24V 1 1 24V
P-GND 2 2 P-GND
ON/OFF 3 3 ON/OFF
NC 4 4 NC
AN-GND RTHIN 5V TS IN D-GND P-GND P-GND GND MHPS IN 5V 5V POUT IN GD 5V 5V PARAAD0 PARAAD1 PARAAD2 PARAAD3 PARAAD4 PARAAD5 PARAAD6 PARAAD7 /REV /INIT /SLCTIN /AUTOFD /STB /ACK BUSY PE /FAULT SLCT GND GND GND /USB-EN USB-ON /1284-EN 3.3V
1 2 1 2 3 4 5 1 2 3 1 2 3
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
1 2 3 4 5 1 2 3
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
5V TS IN D-GND NC P-GND 5V MHPS IN GND 5V 5V PARAAD0 PARAAD1 PARAAD2 PARAAD3 PARAAD4 PARAAD5 PARAAD6 PARAAD7 /REV /INIT /SLCTIN /AUTOFD /STB /ACK BUSY PE /FAULT SLCT GND GND GND /USB-EN USB-ON /1284-EN 3.3V
CN604
CN603
CN602
CN301
CN601
CN12 CN14
CN16
CN1 CN901
CN13 CN1
CN4
CN8
CN203
CN7
CN15
CN6
CN2
CN5 CN17
CCD PWB
MCU PWB
Thermistor
Toner detector sensor
Scanner H.P sensor
POD sensor
GDI/USB PWB
LSU unit
Laser
scanning
motor
Laser beam
sensor
(Start position
detector PWB)
LSU PWB
Laser
PE sensor
Scanner
motor
Fan motor
Operation panel
PWB
Lamp
Inverter PWB
OC
Open/close
SW
AL-841
– 8 –

GDI PWB
A
A
B
B
C
C
D
D
E
E
4 3 2 1
4 3 2 1
C222 100p
C224 100p
C225 100p
C226 100p
C227 100p
C228 100p
C229 100p
C230 100p
C235
560p
R214
22J
R217
22J
R221
22J
R225
22J
R228
22J
R236
22J
R223
22J
R233
22J
R201
100J 1/2W
R215 1.2kJ R224
1.2kJ R226
1.2kJ R229
1.2kJ
R213 1.2kJ R218
1.2kJ R220
1.2kJ R222
1.2kJ
R231 1.2kJ R234
1.2kJ R235
1.2kJ R238
1.2kJ
R239
3.3kJ
D202
DAP202K
3
2
1
D203
DAP202K
3
2
1
D204
DAP202K
3
2
1
CN202 IEEE1284 CON
/DSTB
1DATA 1
2DATA 2
3DATA 3
4DATA 4
5DATA 5
6DATA 6
7DATA 7
8DATA 8
9
/ACK
10 BUSY
11 PE 12 SLCT 13 /AUTOLF
14
(NC)
15 S GND 16 F GND 17 VCC 18
GND 19 GND 20
GND 21
GND 22 GND 23
GND 24
GND 25
GND 26
GND 27
GND 28
GND 29
GND 30
/INPRIM 31
/FAULT 32
S GND 33
(NC) 34
VCC 35
/SLCTIN 36
SHIELD
D201 DAP202K
3
2
1
R232
22J
D205
DAP202K
3
2
1
D206
DAP202K
3
2
1
C232
1000p
C233 33p
R237
22J
L203 SBO-02SAN
IC206
74LS244
1A1 2
1A2 4
1A3 6
1A4 8
2A1 11
2A2 13
2A3 15
2A4 17
1G 1 2G 19
1Y1
18 1Y2
16 1Y3
14 1Y4
12 2Y1
92Y2
72Y3
52Y4
3C234
33p
C242 0.1u
C223 0.1u
R243
22J
C238
100p
R240
22J
D207 DAP202K
3
2
1
R242
22J
C240
100p
C239
100p
R241
22J
C237
100p
D208
DAP202K
3
2
1
C241
100p R244
22J
D209
DAP202K
3
2
1
IC207
74LS244
1A1
21A2
41A3
61A4
82A1
11 2A2
13 2A3
15 2A4
17
1G
12G
19
1Y1 18
1Y2 16
1Y3 14
1Y4 12
2Y1 9
2Y2 7
2Y3 5
2Y4 3
IC205
74LS245
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
G19
DIR 1
B1
18 B2
17 B3
16 B4
15 B5
14 B6
13 B7
12 B8
11
C236
0.1u
C203 47u 10V
C231 0.1u
R216
22J
R219
22J
CN203
27FMN-STK
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
D201 RB501-V40
5V1
5V1
5V1
5V1
5V1
5V1
5V1
5V1
/FAULT /ACK BUSY
/SLCTIN /STB /AUTOFD /INIT
PARAAD7 PARAAD6 PARAAD4 PARAAD3 PARAAD2
3.3V
USB-ON PARAAD0 PE PARAAD5 PARAAD1 /USB-EN
5V1
SLCT
F.G
PARAAD0 PARAAD1 PARAAD2 PARAAD3 PARAAD4 PARAAD6 PARAAD7 /REV /INIT /SLCTIN /AUTOFD /STB /ACK BUSY PE /FAULT /1284-EN /USB-EN
(2-A1) (2-A1) (2-A1) (2-A1) (2-A1)
(2-A2)
(2-A2) (2-A2)
(2-A2)
(2-A3) (2-A3) (2-A2) (2-A4)
(2-A3)
(2-A2) (2-A2)
(2-A2) (2-A3) (2-A3)
SLCT USB-ON PARAAD5
(2-A3)
(2-A4)
1/1
[10] CIRCUIT DIAGRAM AND PARTS LOCATION CHART
AL-841
– 9 –

[PARTS SURFACE]
GDI PWB (PARTS LAYOUT)
[SOLDER SURFACE]
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
5V 5V PARAAD0 PARAAD1 PARAAD2 PARAAD3 PARAAD4 PARAAD5 PARAAD6 PARAAD7 /REV /INIT /SLCTIN /AUTOFD /STB /ACK BUSY PE /FAULT SLCT GND GND GND /USB-EN USB-ON /1284-EN 3.3V
CN203
AL-841
– 10 –

AL-841

CONTENTS
PARTS GUIDE
DIGITAL COPIER
MODEL AL-841
(Exteriors)
(Operation Panel)
(Frame Section)
(Upper Frame Section)
1
(Lower Frame Section-1)
2(Lower Frame-2)
(Fusing Unit)
(Scanner Unit)
1(Carriage 1 Unit)
&
(Packing Material & Accessories)
MCU (MCU PWB Unit)
(Operation Panel PWB Unit)
GDI (GDI PWB Unit)
(Power Supply PWB Unit)
(High Voltage PWB Unit)
(Index)
AL-841 AL-800/840 AL-800/840
The AL-841 Parts Guide describes only the different parts from the AL-800/840. Please use this Parts
Guide together that of the AL-800/840.

DEFINITION
The definition of each Rank is as follows and also noted in the list
A : Parts necessary to be stocked as High usage parts.
B : Parts necessary to be stocked as Standard usage parts.
C :Low usage parts.
D :Parts necessary for refurbish.
E : Unit parts recommended to be stocked for efficient after sales service.
Please note that the lead time for the said parts may be longer than normal parts.
S : Consumable parts.
Please note that the following parts used in Copier under the same description are classified into A or B Rank depending
upon the place used.
Example: Gear made of Metal, Sprocket, Bearing, Belt made of Rubber, Spring clutch mechanism.
A Rank : The parts which may be with the revolution or loading.
B Rank : Parts similar to A Rank parts, but are not included in Rank A.
Because parts marked with “ ” is indispensable for the machine safety maintenance and operation, it must be replaced with
the parts specific to the product specification.
Other than this Parts Guide, please refer to documents Service Manual (including Circuit Diagram) of this model.
Please use the 13 digit code described in the right hand corner of front cover of the document, when you place an order.
For U.S. only-Use order codes provided in advertising literature. Do not order from parts department.
1(Exteriors)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
1AK DX N C PU EX tray PU
2AN EQ N C PU tray PU
3AF DS N C Paper guide
4AQ EQ N C Rear cabinet
6AU EZ N C Right cabinet
8AG DX N C Delivery tray
9AH DX N C Delivery extension lower
10 AH DX N C Left cabinet lower
11 BG GT N E Operation panel unit (Japan)
BG GT N E Operation panel unit (USA)
12 AS EQ N C Front cabinet
14 AT EZ N C Left cabinet
15 AG DX N C OC switch acutuator OC- -
16 AH DX N C Right cabinet lower
22 AE DJ N C OC hinge OC
23 AU FG N C OC cover OC -
24 AS EZ C OC mat OC
26 AG DX N C Operation label (Japan)
AG DX N C Operation label (USA)
27 AG DX N C Platen label (Japan)
AG DS N C Platen label (USA)
29 AC DJ N C Tray label (Japan Only)
501 AU EZ N E Paper feed unit (Japan)
AT EZ N E Paper feed unit (USA)
502 AU EZ N E Oc cover unit OC -
– 1 –

2(Operation Panel)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
1BV RB N E Operation PWB unit
2AR EQ C Operation FFC FFC
5AT EZ N C Operation panel cabinet (Japan)
AV FG C Operation panel cabinet (USA)
8AV FG N C Operation panel (Japan)
AV FG N C Operation panel (USA)
9AK EB N C Operation key R - R
10 AL EB N C Operation key L - L
11 AF DS C Cable cover sheet - -
(Unit)
901 BG GT N E Operation panel unit (Japan)
BG GT N E Operation panel unit (USA)
3(Frame Section)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
4AG DS C Release lever - -
4(Upper Frame Section)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
14 AB DJ C DV press spring DV
30 BQ LP N E Toner sensor PWB unit - -
51(Lower Frame Section-1)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
15 AG DX N C Tray lock lever
39 BB FX C Lower frame -
47 AB DJ C Release lever spring R
52 AD DJ C Electricity plate (Japan Only)
62(Lower Frame-2)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
1CA TV N E MCU PWB unit (Japan) MCU
CA TV N E MCU PWB unit (USA) MCU
7BK HG E High voltage PWB unit (Japan)
BL HL N E High voltage PWB unit (USA)
9AP EQ C Bottom plate
13 AG DX N C ICU FFC ICU-FFC
14 BL HL N E GDI PWB unit GDI
15 BN HZ E Power supply PWB unit (100V Japan)
BP LP N E Power supply PWB unit (120V USA)
7(Fusing Unit)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
17 BG GT N E POD PWB unit P-OUT
26 AV FG C FU roller FU
8(Scanner Unit)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
1AK DX C Dark box
5BE GN N E Carriage 1 unit 1
8AA DJ C Table glass rubber
13 AN EG N B Micro switch unit
26 AH DX C Frame R - R
27 AX FG C Mein frame -
28 BB FX B Mirror motor ---
29 AK DX C Motor fixing plate - -
33 AC DJ C Belt tension spring
42 BT MW N E Lens base unit
51 AF DS N C Myler CCD -
54 AX FG B Table glass -
– 2 –

9 1 (Carriage 1 Unit)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
1AC DJ N C Lamp cover L - L
4AG DX N C Inverter harness - -
6AH DX N C Lamp base
8AF DS C Carriage 1 1
11 AD DJ N C Carriage 1 base F 1 F
14 AD DJ N C Carriage 1 base R 1 R
15 AC DJ N C Lamp cover R - R
16 BA FX N E Lamp PWB unit
17 AD DJ N C Sub reflector
18 AA DD C Screw (2×8)
19 AA DD C Screw (3×6)
20 AA DD C Screw (3×6)
(Unit)
901 BE GN N E Carriage 1 unit 1
11 &(Packing Material & Accessories)
NO. PARTS CODE PRICE RANK NEW
MARK PART RANK DESCRIPTION
Ex. Ja.
4AM EG N D Packing add upper
5AE DJ N D Body vinyl
6 AM EG N D Packing add lower
7AS EZ N D Packing case (Japan)
AS EZ N D Packing case (USA)
12 AM EG N C CDROM (Japan) CDROM
AM EG N C CDROM (USA) CDROM
104
AW FG N D Operation manual (USA)
AW ZZ N D Operation manual (Japan)
AE DJ N D eTypist Operation manual (Japan) eTypist
AE DJ N D Up grade guidance (Japan)
AC DJ N D Sample card (Japan)
AF DS N D Postcard (Japan)
110 AG DX D Drum sheet
111 AC DJ D Slip sheet (USA) -
113 AB DJ D Label (USA) -
1(Exteriors)
501
502
PRPN0030
1
2
3
4
6
8
9
10
11 12
14 15
16
22
22
23
24
27
26
29
– 3 –

C
C
A
B
AB
1
15
7
9
13
14
4
14
30
PRPN0031
2
1
5
8
9
10
11
26
17
15
39
47
47
52
2(Operation Panel) 3(Frame Section)
4(Upper Frame Section) 51(Lower Frame Section-1)
62(Lower Freme-2) 7(Fusing Unit)
– 4 –

8(Scanner Unit) 9 1 (Carriage 1 Unit)
51
1
5
8
13
26
27
28
29
33
42
8
8
8
8
8
54
9
9
2
PRPN0032
18
15
17
120
16
19
8
4
14
11
6
18
4
5
6
7
12
11 &(Packing Material & Accessories)
– 5 –