Ricoh is450 Service Manual

HS2P

(Machine Code: G407/G408/G410/G411)

Service Manual

Issued on 22nd December 1998

Ricoh Co., Ltd



IMPORTANT SAFETY NOTICES

1. Before disassembling or assembling parts of the scanner and peripherals,
make sure that the scanner power cord is unplugged.

2. The wall outlet should be near the scanner and easily accessible.

3. The output voltage of the PSU (Power Supply Unit) can be either 100 ~ 120
Vac or 220 ~ 240 Vac, without any adjustment. Make sure that the above
voltage is used.

4. The power cord should be an approved type, in accordance with the
regulations for the country in which the scanner is used.

5. The use of cables other than the shield I/O cables or equivalent specified will
invalidate the certification of this scanner and may cause interference levels
which exceed the limits established for this equipment.

Maintenance Information

The user’s manual explains how to use and maintain the scanner. Before
performing the maintenance, read the user’s manual.

Warning concerning copyright

Many documents are copyrighted. Such documents may not be reproduced by
scanning or in any other form without the express permission of the copyright
holder.

Notice

The contents of this manual are subject to change without notice.

TABLE OF CONTENTS

1. OVERALL MACH INE INFORMATION ........................................1-1

1.1 SPECIFICATIONS..................................................................................... 1-1

1.1.1 MAIN BODY......................................................................................1-1

1.1.2 ENDORSER .....................................................................................1-2

1.2 COMPONENT LAYOUT............................................................................1-3

1.2.1 FRONT VIEW...................................................................................1-3

1.2.2 REAR VIEW......................................................................................1-4

1.2.3 ADF ..................................................................................................1-5

1.3 DRIVE LAYOUT........................................................................................1-6

1.3.1 SCANNER........................................................................................1-6

1.3.2 ADF ..................................................................................................1-7

1.4 ELECTRICAL COMPONENT LAYOUT.....................................................1-8

1.4.1 SCANNER........................................................................................1-8

1.4.2 ADF ..................................................................................................1-9

2. DETAILED SECTION DESCRIPTIONS.......................................2-1

2.1 INITIALIZATION........................................................................................2-1

2.2 SCANNER MECHANISMS........................................................................2-3

2.2.1 BOOK MODE....................................................................................2-3

2.2.2 ADF MODE.......................................................................................2-7

2.3 PAPER MISFEED DETECTION..............................................................2-14

2.4 IMAGE PROCESSING............................................................................2-16

2.4.1 OVERVIEW ....................................................................................2-16

2.4.2 SBU................................................................................................2-17

2.4.3 IPU (IMAGE PROCESSING UNIT).................................................2-18

2.5 REVERSE SIDE SCANNING..................................................................2-21

2.5.1 OVERVIEW ....................................................................................2-21

2.5.2 CIS (CONTACT IMAGE SENSOR) UNIT.......................................2-22

2.5.3 IMAGE SCANNING........................................................................2-23

2.6 ENDORSER UNIT...................................................................................2-24

2.6.1 OVERVIEW ....................................................................................2-24

2.6.2 ENDORSER UNIT..........................................................................2-25

2.7 LOW POWER MODE..............................................................................2-26

2.8 MAIN PCBs AND THEIR FUNCTIONS ...................................................2-27

2.8.1 BOARD STRUCTURE....................................................................2-27

2.8.2 SCU (SCANNER CONTROL UNIT) ...............................................2-28

2.8.3 IOB (INPUT/OUTPUT BOARD)...................................................... 2-29

2.8.4 ADU (ADF DRIVE UNIT) ................................................................2-30

i

3. INSTALLA TION...........................................................................3-1

3.1 ENVIRONMENT........................................................................................3-1

3.1.1 PRECAUTIONS................................................................................3-1

3.1.2 ENVIRONMENTAL CONDITIONS ...................................................3-1

3.1.3 MACHINE LEVEL.............................................................................3-1

3.1.4 MINIMUM SPACE REQUIREMENTS...............................................3-1

3.1.5 POWER REQUIREMENTS ..............................................................3-2

3.2 SCANNER INSTALLATION.......................................................................3-2

3.3 IPU UNIT INSTALLATION.........................................................................3-2

3.4 ENDORSER UNIT INSTALLATION...........................................................3-3

3.4.1 ACCESSORY CHECK......................................................................3-3

3.4.2 INSTALLATION PROCEDURE ........................................................3-4

3.4.3 STAMP DENSITY ADJUSTMENT PROCEDURE............................3-6

3.5 RED LAMP UNIT INSTALLATION.............................................................3-7

3.5.1 ACCESSORY CHECK......................................................................3-7

3.5.2 INSTALLATION PROCEDURE ........................................................3-8

4. SERVICE LEVEL FUNCTIONS...................................................4-1

4.1 DIP SWITCH SETTINGS...........................................................................4-1

4.2 LEDs/TEST POINTS.................................................................................4-6

4.2.1 LEDs.................................................................................................4-6

4.2.2 TEST POINTS..................................................................................4-6

4.3 SPECIAL TOOLS ......................................................................................4-6

5. REPLACEMENT AND ADJUSTMENT........................................5-1

5.1 COVERS ...................................................................................................5-1

5.1.1 ADF EXTERIOR...............................................................................5-1

5.1.2 ADF COVER.....................................................................................5-2

5.1.3 SCANNER EXTERIOR/OPERATION PANEL..................................5-3

5.2 ADF AND UPPER SIDE............................................................................5-4

5.2.1 DOCUMENT SENSOR.....................................................................5-4

5.2.2 SEPARATION UNIT.........................................................................5-4

5.2.3 DOCUMENT TABLE ASSEMBLY ....................................................5-5

5.2.4 CIS....................................................................................................5-5

5.2.5 SCANNING GUIDE PLATE..............................................................5-6

5.2.6 FEED SENSOR................................................................................5-6

5.2.7 READ SENSOR................................................................................5-7

5.2.8 FEED-OUT SENSOR.......................................................................5-7

5.2.9 PAPER TRANSPORT DRUM...........................................................5-8

5.3 ADF AND RIGHT SIDE .............................................................................5-9

5.3.1 PAPER FEED MOTOR.....................................................................5-9

5.3.2 EDU..................................................................................................5-9

5.3.3 ENDORSER SOLENOID................................................................5-10

5.3.4 RELAY SENSOR............................................................................5-10

5.4 ADF AND LEFT SIDE..............................................................................5-11

5.4.1 ADU/PAPER TRANSPORT MOTOR..............................................5-11

ii

5.4.2 DOCUMENT TABLE POSITION SENSOR.....................................5-11

5.4.3 PICK-UP CLUTCH/DOCUMENT TABLE LIFT CLUTCH................5-12

5.5 SCANNER...............................................................................................5-13

5.5.1 EXPOSURE GLASS.......................................................................5-13

5.5.2 EXPOSURE LAMP.........................................................................5-14

5.5.3 SBU/LAMP STABILIZER/SCANNER MOTOR/PSU.......................5-15

5.5.4 IOB .................................................................................................5-16

5.5.5 SOP................................................................................................5-17

5.5.6 HOME POSITION SENSOR...........................................................5-17

5.5.7 ADF INTERLOCK SWITCH............................................................5-18

5.5.8 SCANNER WIRE............................................................................5-19

5.6 PCB.........................................................................................................5-22

5.6.1 SCU/RCU/IPU ................................................................................5-22

6. TROUBLESHOOTIN G.................................................................6-1

6.1 SELF-DIAGNOSTICS................................................................................6-1

6.2 CHECK ITEMS..........................................................................................6-1

6.2.1 ITEMS CHECKED DURING INITIALIZATION..................................6-1

6.3 ERROR INDICATION................................................................................6-2

6.3.1 USER LEVEL ERROR INDICATION................................................6-2

6.3.2 TECHNICIAN LEVEL ERROR INDICATION....................................6-2

6.4 TROUBLESHOOTING PROCEDURES....................................................6-3

6.4.1 USER-VISIBLE ERROR CONDITIONS............................................6-3

6.4.2 SERVICE CALL ERRORS (SYSTEM ERRORS) .............................6-8

6.5 INDICATION WHEN A CONNECTOR IS OUT OF POSITION................6-14

6.5.1 SCANNER......................................................................................6-14

6.5.2 ADF ................................................................................................6-15

6.6 BLOWN FUSE CODITIONS....................................................................6-16

7. OPTION.......................................................................................7-1

7.1 IPU (IMAGE PROCESSING UNIT)............................................................7-1

7.1.1 OVERVIEW ......................................................................................7-1

7.2 IMAGE PROCESSING PATH....................................................................7-2

iii

22 December 1998 SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1.1 SPECIFICATIONS

1.1.1 MAIN BODY

Scanning method: Flat-bed with ADF
Book scan: Horizontal: Max. 298 mm [11.7"]

Vertical: Max. 432 mm [17.0"]

ADF: Document size:

Width: 69 ~ 298 mm [2.7" ~ 11.7"]
Length: 120 ~ 2,000 mm [4.7" ~ 78.5"]

All pages in a document must be the

same width
Document weight: 41 ~ 128 g/m2 [11 ~ 34 lb.]
ADF capacity:

150 sheets (64 g/m2 [20 lb.])
110 sheets (105 g/m2 [24 lb.]/A4, A5, LT, HLT)
80 sheets (105 g/m2 [24 lb.]/A3, DLT)
Stack height must be less than 15 mm [0.6"]

Scanning resolution: Simplex mode:

Main scan: 100 ~ 800 dpi (in 1 dpi steps)
Sub scan: 100 ~ 800 dpi (in 1 dpi steps)

Duplex mode:

Main scan: 100 ~ 600 dpi (in 100 dpi steps)
Sub scan: 100 ~ 600 dpi (in 100 dpi steps)

Overall

Information

Grayscales: 8 bits/pixel
Initialization time: About 15 seconds
Scanning speed: 0.65 s/200 dpi (A4, binary picture mode)
Scanning throughput: Simplex mode: 55 ppm/200 dpi

(A4, binary picture mode)

Duplex mode: 86 ipm/200 dpi

(A4, binary picture mode)

(Counted from the second page)

Interface: SCSI-2
Power: 1) 102 to 138 V ac (45 to 65 Hz)

2) 187 to 276 V ac (45 to 65 Hz)

Power consumption
(without all possible options):

Simplex model Standby: 50 W Max.

Scanning: 90 W Max.
Low power mode: 12 W Max.

Duplex model Standby: 80 W Max.

Scanning: 120 W Max.
Low power mode: 12 W Max.

1-1

SPECIFICATIONS 22 December 1998

Operating environment:

Temperature: 10 to 32°C [50 to 90°F]
Humidity: 20 to 80% RH

Weight: Simplex Model: Less than 25 kg [55.1 lb.]

Duplex Model: Less than 26 kg [57.3 lb.]
(Add 1 kg [2.2 lb.] when the Endorser is installed.)

Dimensions (W x D x H): 470 x 677 x 278 mm [18.5" x 26.7" x 10.9"]

1.1.2 ENDORSER

Number of printable characters: 19 characters (max)
Character set: 43 characters

0123456789#./-:,’AB ····Z
Character size: 1.6 (W) x 2.8 (H) mm
Character pitch:
Printable lines: 1 line (main scan direction)
Inking: Ink roll type

2.4 mm ± 20%

Ink refill: Ink roll exchange
Ink color: Purple
Print position:

a: 7 ± 4 mm

b: 0 ± 5 mm

Document Feed Direction

Document

front side

a

1-2

b

G411V506.WMF

22 December 1998 COMPONENT LAYOUT

1.2 COMPONENT LAYOUT

1.2.1 FRONT VIEW

1

2

6

Overall

Information

3

5

4

No. Name Function

Platen cover

1

ADF exposure cover

2

Scale Used for positioning a document when placing it on the

3

Scanner indicator lamps T he green and red lights indicate the condition of the

4
5 Power switch Turns the power on and off.

Main exposure glass A document to be scanned in book mode is placed face

6

Covers the document and serves as a neutral
background for documents placed on the main
exposure glass.

Covers the scanner and closes the ADF exposure
cover interlock switch. Also contains an exposure glass.

exposure glass.
scanner.

down on this glass.

G411V500.WMF

1-3

COMPONENT LAYOUT 22 December 1998

1.2.2 RE AR VIEW

13

101112 789

G411V501.WMF

No. Name Function

7 Reset switch If this is pressed, the machine is reset.

DIP switches

8

Interface for reverse side

9

scanning
(Duplex model only)

10 SCSI connectors For connecting the SCSI cables.

SCSI ID rotary switch

11
12 Power plug inlet For connecting the power cord.

ADF cover Open this cover to clear paper jammed at the input

13

Used to select various scanning modes and test
modes.

Interface for the video signal during reverse side
scanning.

Used to select the SCSI ID and to select diagnostic
tests. Note that positions 8 and 9 are interpreted as
SCSI ID 7.

side.

1-4

22 December 1998 COMPONENT LAYOUT

1.2.3 ADF

20

19

18

14

15

G411V502.WMF

Overall

Information

16

17

No. Name Function

ADF Autom atically f eeds multi-page documents into the

14

Document table

15

Document guides Used to properly align the documents placed in the

16
17 Exit table Receives documents fed by the ADF after scanning.

Exit table extension This holds the documents output from the ADF; it can

18

Endorser cover

19

Document support wire If long documents are placed in the input tray, this helps

20

scanner.
Documents to be scanned using the ADF are placed

here.
input tray.

be extended to support long documents.
Open this cover to clean the endorser or replace the

ink.
to feed them correctly.

1-5

DRIVE LAYOUT 22 December 1998

1.3 DRIVE LAYOUT

1.3.1 SCANNER

2

3

1

7

4

7

7

4

6

5

7

No. Name Function

First scanner Moves the exposure lamp along the document and

1

Second scanner

2
3 Scanner drive wires Transmit motor power to the 1st and 2nd scanners.

4 Wire springs Tighten the scanner drive wires.
5 Motor belt Transmits motor power to the scanner drive wires.
6 Scanner motor Drives the scanners.
7 Pulleys Hold the scanner drive wires.

sends the light reflected from the document to the 2nd
scanner by means of a mirror.

Moves to keep the distance between the exposure lamp
and the CCD constant, and sends light reflected from
the 1st scanner to the CCD.

G411V503.WMF

1-6

22 December 1998 DRIVE LAYOUT

1.3.2 ADF

13

14

8

9

Overall

Information

10

11

12

G411V507.WMF

No. Name Function

8 Feed roller Feeds the top page of the original into the ADF.

Pick-up roller

9

Separation roller Stops the lower pages of the original while allowing the

10

White roller

11

(Duplex model only)
12 Feed-out rollers Feed the scanned original onto the exit table.
13 Paper transport drum Transports the original to the scanning position.
14 Paper transport rollers Hold the original against the paper transport drum.

Picks up and transports the top page of the original on
the document table.

top one to pass.
Allows the machine to correct for variations in the white

level of the CIS.

1-7

ELECTRICAL COMPONENT LAYOUT 22 December 1998

1.4 ELECTRICAL COMPONENT LAYOUT

1.4.1 SCANNER

11

10

9

8

1

2

7

3

4

6

5

No. Name Function

Home position sensor

1
2 SCU Controls the overall scanner function.

3 Lamp Stabilizer Provides ac power to the exposure lamp.

SBU Cont ains t he CCD, and outputs a video signal to the

4
5 Scanner Motor Drives the scanners.

6 SOP This contains the scanner indicator lamps.
7 PSU Provides dc voltages to the system.
8 IOB Controls the mechanical parts of the scanner.

IPU Board (Option) Performs automatic text/image separation, dynamic

9

RCU

10

(Duplex Model only)
11 Exposure lamp Illuminates the original for exposure.

Detects whether the first scanner is at the home
position.

SCU.

threshold, section area, and document size detection.
Outputs a video signal of the reverse side of the original

to the SCU.

G411V504.WMF

1-8

22 December 1998 ELECTRICAL COMPONENT LAYOUT

1.4.2 ADF

23

24

22

25

21

20

26

12

13

19

Overall

Information

14

15

16

17

18

G411V505.WMF

No. Name Function

ADF interlock switch

12
13 Paper transport motor Drives the paper transport drum.

Feed sensor

14
15 Read sensor Synchronizes the original exposure timing.

16 Paper feed motor This drives the pick-up and feed rollers.

CIS (Duplex model only) Contains t he CCDs and LEDs that scan the reverse

17
18 EDU (Option) Controls the mechanical parts of the endorser.

Endorser solenoid

19

(Option)
20 Relay sensor Checks for original misfeeds.
21 Feed-out sensor Detects when a document is at the feed-out position.

Document sensor Detects when a document is placed on the document

22
23 ADU Controls the mechanical parts of the ADF.

Document table position

24

sensor
25 Pick-up clutch Controls pick-up roller rotation.

Document table lift

26

clutch

Detects whether the ADF cover and platen cover are
open or closed; cuts the power supply to the machine.

Detects when a document is just before the feeding
position.

side of the original.

Moves the paper holding plate to hold the original at the
endorser’s printing position.

table.

Detects if the document table is at the feed position or
not.

Switches on to lift the document table up or down.

1-9

22 December 1998 INITIALIZATION

2. DETAILED SECTION DESCRIPTIONS

2.1 INITIALIZATION

Power on

1

Is the memory OK?

Yes

No

User Level: System error

User Level: System error

Service Level: Memory error

Service Level: Memory error

Detailed

Descriptions

2

3

4

5

6

7

8

Initialize the I/O port, E2PROM,

IPU, and memory controller

Initialize the scanner motor

Is the

home position check

OK?

Yes

Adjust the black level

Turn on the lamp

Scan the white plate

Is the

white level within specified

value?

Yes

Were there any

shading, or lamp, errors?

No

No

No

Yes

Home position error

Lamp error

No

Has the

initialization procedure been

tried three times?

14

Use the default value of the white

Yes

and black levels

10

11

12

9

Endorser motor turns on for 0.1s

one of the feed, read, or feed-

Are the

ADF or the document feeder

cover closed?

Yes

Is any

out sensors on?

No

Is there

any paper on the document

table?

Yes Yes

Detects document

No

Yes

No No

ADF open error

Paper jam

Is the document

table working properly?

READY

2-1

13

Document table error

G411D503.WMF

INITIALIZATION 22 December 1998

During power-up initialization, the scanner performs the following steps (refer to the
flow chart on the previous page).

1. Tests the ROM checksum and makes a RAM read/write test. If the CPU cannot
test these, the CPU determines that a memory error has occurred.

2. Initializes the I/O port, E2PROM, and gate arrays (IPU and memory controller).

3. Initializes the scanner motor driver.

4. Checks the home position sensor signal timing while moving the scanners. If
the CPU does not detect a signal change within the specified period, it
determines that a home position error has occurred.

5. Adjusts the difference between the even and odd black levels and total black
level.

6. Turns the exposure lamp on.

7. Adjusts the white level, and checks the peak level of the auto gain control. If the
CPU cannot adjust them to the specified levels, the CPU determines that a
lamp error has occurred.

8. If the black level or the white level cannot be adjusted properly during the
above initialization process, the scanner retries the initialization up to three
times. If the CPU detects an abnormal condition at the third time (step 14), the
CPU stores the default values of the black and white levels into the NVRAM on
the SCU.

9. Checks the ADF interlock switch signal. If the CPU detects that the switch is
open, it determines that an ADF open error has occurred.

10. When the endorser unit has been installed, the endorser moto r turns on for 0.1
second.

11. Checks the signals from the feed, read, and feed-out sensors. If any of them
are on, the CPU determines that there is a paper jam.

12. Checks the document sensor signal. If the CPU detects a document on the
document table, check #13 is not made until the document is removed.

13. Checks the document table position sensor signal timing while lifting and
lowering the document table.

14. See step 8.

2-2

22 December 1998 SCANNER MECHANISMS

2.2 SCANNER MECHANISMS

2.2.1 BOOK MODE

Overview

[B][C][A][E]

Detailed

Descriptions

[F] [D]

G411D521.WMF

The exposure lamp (a xenon lamp in this model) [A] illuminates the original. The
image is reflected onto a CCD (charge coupled device) [B] via the 1st, 2nd, and 3rd
mirrors, and through the lens [C].

The 1st scanner [D] consists of the exposure lamp, a reflector [E], and the 1st
mirror [F].

The exposure lamp is energized by an ac supply to avoid uneven light intensity
while the 1st scanner moves in the sub scan direction (down the page). The entire
exposure lamp surface is frosted to ensure even exposure in the main scan
direction (across the page).

The light reflected by the reflector is of almost equal intensity in all directions, to
reduce shadows on pasted originals.

2-3

SCANNER MECHANISMS 22 December 1998

Scanner Drive

[G]

[B]

[C]

[F]

[G]

[A]

[D]

[E]

G411D522.WMF

The scanner drive motor [A] (a stepper motor) drives the 1st and 2nd scanners [B,
C] through the timing belt [D], scanner drive pulley [E], scanner drive shaft [F], and
two scanner wires [G].

The IOB board drives the scanner drive motor. The scanning speed depends on
the scanning resolution. The returning speed depends on the distance from the
home position sensor.

2-4

22 December 1998 SCANNER MECHANISMS

Basic Scanning Procedure

When the scan command is received from the host computer, the scanner starts
scanning as explained in the following steps.

Initialization

[E]

[A]

[D]

[F]

[G]

[B]

Detailed

Descriptions

[C]

G411D524.WMF

The scanner checks the home position, scanner cover, and memory. If an error is
detected, the scanner motor will stop.

The scanner scans the white plate [A] on the underside of the ADF exposure cover
to perform the shading funct i on.

Image Scanning

The scanner starts to scan the image area at the designated position [B]. The
scanner stops after scanning the designated image area [C]. The arrows indicate
that the scan start position and image area depend on the settings input by the
user.

Scanner Reversing

After the image has been scanned, the scanners return to the home position [D].
The scanners are stopped when the first scanner activates the home position

sensor [E]. If the scanner home position sensor is not activated within a certain
time, a home position sensor erro r will occu r.

2-5

SCANNER MECHANISMS 22 December 1998

Optional Steps (Optional IPU Board)

Size Detection

If selected, this is done after the ‘Initialization’ step.

1) Main Scan Direction (Document Width)

The first scanner moves to the book mode standard position ([F] on the previous
page). Then, the scanner scans 5 mm from the book mode standard position.

The scanner determines the document width in the main scan direction from the
output signal level. The edge of the document is detected by the difference
between the level of the document data and the background signal which is
provided by the silver plate [G] attached to the platen cover across the main scan.

If there is a gap at the leading edge, such as a tear (or a black stripe), extending
more than 1 mm across the paper and more than 5 mm down the paper, the
machine cannot detect the document width past this gap. In this case, an error
message may appear, and scanning is impossible. . Disable this feature to allow
the machine to scan this document.

2) Sub Scan Direction (Document Length)

The scanner detects the document size only in the main scan direction, and the
scanner driver determines that the document length is the same as for a standard
paper size of the same width.

NOTE:

The scanner always assumes the paper is in a lengthwise orientation (i.e.,
the main scan is the short side). Also, in USA models, if Letter width is
detected, the paper is always assumed to be Letter size (this means that
the last few inches of a Legal-size original will not be scanned).

Read Size Command

If selected, this is done after the ‘Initialization’ step.

1) Read Size Command

If the scanner receives the Read Size command in book mode, it detects the size
in the main scan direction as described above.

The scanner sends the width data to the host computer.
After detecting the document size, the scanner scans the detected area.

Abort Command

This can occur at any time during the basic scanning procedure.
If the Abort command is received during scanning, the scanner motor is stopped.

Then the scanner returns to the home position ([D] in the previous diagram).
If this command is received while the scanner is reversing or checking the home

position, the operation is not interrupted.

2-6

22 December 1998 SCANNER MECHANISMS

2.2.2 ADF MODE

Overview

[D]

[F]

[G]

[H]

[A]

[N]

[B]

[C]

[M]

[E]

[L]

Detailed

Descriptions

[J]

[K]

G411D517.WMF

[I]

When the originals are pl aced on the do cument table [ A], the document sensor [B]
detects them. The pick-up roller [C] picks up the originals and transports them to
the feed roller [D]. The separation roller [E] turns in the opposite direction to the
feed roller. As a result, just one original is sent to the paper transport drum [G]. The
feed sensor [F] detects whether the original has reached the transport drum or not.
Then the original turns with the transport drum through the read sensor [H]. While
the original passes over the ADF scanning position [J], the scanner [K] reads the
original. After reading, the original goes to the exit table [N]. The feed-out sensor
[M] detects whether the original is fed out or not. The relay sensor [L] detects when
an original is jammed in the area between the read sensor and the feed-out
sensor. This sensor is monitored at all times except when the ADF is feeding a
document.

2-7

SCANNER MECHANISMS 22 December 1998

Basic Scanning Procedure

When the scanner receives t he ADF scanning command, the scanner scans the
original as described below.

1) ADF Mode

The scanner performs the home position check and the shading process. If a home
position error is detected, the scanner [K] will stop imme diately. If an ADF cover
open error or memory error is de tec ted, the scanner will stop after returning to the
home position.

The first carriage moves to the ADF scanning position [J] from the scanner home
position [I]. Then the paper transport motor starts.

2) SADF Mode

The scanner waits until the designated time for the originals to be placed on the
document table [A].

When the originals have b een placed on the document table, the sa me procedure
as for ADF mode is carried out.

2-8

22 December 1998 SCANNER MECHANISMS

Document Table Lift

[C]

[G]

[F]

Detailed

Descriptions

[A]

[B]

[E]

[H]

[D]

[F]

[A]

G411D518.PCX

The lift mechanism consists of the document table lift clutch [A], the lift shaft [B],
the document table position sensor [C], and the sensor actuator on the gear [D].

In standby mode, the bend in the lift shaft [H] is pointing downwards and the
actuator is just inside the sensor.

When an original is placed on the document table, the document sensor [E] is
activated. Then the paper feed motor [G] turns on. At the same time, the document
table lift clutch [A] turns on to rotate the lift shaft.

At this time, the actuator starts to turn anticlockwise, and the flat part of the spring
[I] that is loosely attached to the bend in the lift shaft pushes up the document table
(see the next page for a diagram).

When the top of the document stack is pushed up against the pi ck-up roller, it can
rise no more. However, the mechanism continues to push up against the tray until
a half-turn of the shaft has been completed (i.e., until the actuator leaves the
document table position sensor). At that time, the document table lift clutch and the
paper feed motor turn off. If the actuator does not leave the sensor within a certain
time, a document table error will occur.

The feed motor turns on again at a motor speed which depends on the scanning
resolution, and the pick-up clutch [F] turns on to feed the top sheet of the original
(see Original Feed and Separation).

2-9

SCANNER MECHANISMS 22 December 1998

[I]

[H]

G411D519.WMF

When the first original is being fed, the bend in the lift shaft is pointing up, and the
spring is at maximum compression. As sheets of the document are scanned, the
spring pushes the document table upwards so that the top of the stack is always
against the pick-up roller.

When all page s of the original have been fed out of the ADF, the document table
lift clutch and paper feed motor are energized to lower the tray. They turn off when
the document table sensor is deactivated. If the sensor is not deactivated within the
designated time, a document table error will occur.

2-10

22 December 1998 SCANNER MECHANISMS

Original Feed and Separation

[D]

[E]

[F]

[A]

[C]

Detailed

Descriptions

[B]

G411D520.WMF

To feed the original, the paper feed motor and the paper transport motor (which
drives the paper transport drum) turn on. The paper feed motor drives the pick-up
roller [A] through a train of gears and the pick-up clutch [B]. The pick-up clutch
turns on to feed the top sheet of the original. If the pick-up roller feeds multiple
pages of the original, the separation roller [C] and the feed roller [D] separate these
pages (the separation mechanism is friction-based).

When the leading edge of the original ac tivates the feed sensor [E], the paper feed
motor and the pick-up clutch turn off, then the paper transport drum [F] feeds the
original to the scanning position.

Image Scanning

The scanner starts to scan the image when the leading edge has passed the read
sensor by a certain distance (measured by motor pulses).

When the CP U has fed the trailing edge of the original 30 mm past the f eed-out
sensor, the transport motor turns off.

2-11

SCANNER MECHANISMS 22 December 1998

Optional Steps

Size Detection

[A]

[B]

[D]

G411D523.WMF

[C]

If selected, this is done after document table lift/paper feed.

1) Main Scan Direction (Document Width)

This function will be available when the optional IPU board is installed.
First of all, the original is fed to the scan ready position between the read sensor

[B] and the size detection position [C]. Then the first scanner moves to the size
detection position [C] from the ADF scanning position [D]. After that, the original is
fed to the ADF scanning position.

As a result of the above operation, the original is fed 5 mm past the first scanner.
Then the CPU detects the original width. The edge of the document is detected by
the difference between the level of the document data and the background level,
which is provided by the black bracket located over the ADF exposure cover.

If there is a gap at the leading edge, such as a tear (or a black stripe), extending
more than 1 mm across the paper and more than 5 mm down the paper, the
machine cannot detect the document width past this gap. In this case, an error
message may appear, and scanning is impossible. Disable this feature to allow the
machine to scan this document.

After finishing the above operation, the first scanner returns to the ADF scanning
position.

2) Sub Scan Direction (Document Length)

The length of the original is calculated by counting the motor pulses while the feed
sensor [A] is on. (The length is detected during scanning.)

2-12

22 December 1998 SCANNER MECHANISMS

Read Size Command

If selected, this is done after document table lift/paper feed.
If the scanner receives a Read Size command in ADF mode, it detects the

document size in the main scan direction as described on the previous page.
The scanner sends the width data to the host computer.

Abort and Unload Commands

These can occur at any time during the basic scanning procedure.
When the CP U receives the Abort or the Unload command during paper transport,

the scanner feeds out any original that is in the ADF.

Detailed

Descriptions

2-13

PAPER MISFEED DETECTION 22 December 1998

2.3 PAPER MISFEED DETECTION

Start

MAX
READ

Paper Feed Motor

Pick-up Clutch

OFF

Document Table
Lift Clutch

Document Table
Position Sensor

Document Sensor

MAX

Paper Transport
Motor

Feed Sensor

Read Sensor

Feed-out Sensor

FGATE

FGATE: When this signal is high, scanned data is valid

READ
OFF

t1

t2

t1 t2 t3 t4 t5 t6

200 dpi
400 dpi

Within

3,000

Within

3,000

210 205 44 24.64
210 205 88 172.04

Original End

J1

J4

t3

J2

J5

J3

J6

t5 t6

G411D527.WMF

Unit: milliseconds

L x 0.011

x 200

L x 0.011

x 400

2-14

L: Document length (mm)

22 December 1998 PAPER MISFEED DETECTION

J1: The leading edge of the original does not reach the feed sensor within the time

required for feeding the distance between the pick-up roller and the feed sensor
+ 150 mm after the pick-up clutch turned on.

J2: The leading edge of the original does not reach the read sensor within the time

required for feeding the distance between the feed sensor and the read sensor
+ 150 mm after the feed sensor was activated.

J3: The leading edge of the original does not reach the feed-out sensor within the

time required for feeding the distance between the read sensor and the feed
out sensor + 30 mm after the read sensor was activated.

J4: The trailing edge of the original doe s not pass through the feed sensor within

the time required for feeding the maximum original length (2 m) + 60 mm after
the feed sensor was activated.

J5: The trailing edge of the original doe s not pass through the read sensor within

the time required for feeding the original + 75 mm after the read was activated.

J6: The trailing edge of the origin al does not pass through the feed-out sensor

within the time required for feeding the original length + 75 mm after the feed­out sensor was activated.

If an original jam or an original non-feed is detected, the paper transport motor,
paper feed motor, and the exposure lamp turn off. Then, the appropriate LEDs
inform the user of the machine’s status.

Detailed

Descriptions

If an original remains in the ADF, the original is fed out and the paper transport
motor stops.

2-15

IMAGE PROCESSING 22 December 1998

2.4 IMAGE PROCESSING

2.4.1 OVERVIEW

(Duplex model only)

CCD

SBU

CCD

IOB

CIS

SCU

DRAM

Memory

Control

IC

SCSI

Control

IC

IPU

IPU

Memory

Control

IC

RCU

DRAM

G411D508.WMF

The CCD generates two analog video signals. The SBU (Sensor Board Unit)
converts these analog signals to 8-bit digital signals, then it sends these digital
signals to the SCU (Scanner Control Unit) board through the IOB board. The IPU
(Image Processing Unit) IC on the SCU does the image processing, then the image
data goes to the computer through the Memory Control IC and the SCSI controller.

The CIS (Contact Image Sensor) unit in the duplex model for reverse-side
scanning outputs two digital signals. The IPU on the RCU (Reverse Control Unit)
board does the image processing, then the image data goes to the computer
through the SCU.

2-16

22 December 1998 IMAGE PROCESSING

2.4.2 SBU

SBU

SCU

IOB

O

Analog

Processing IC1

A/D 1

8 bit data

IPU

CCD

E

Analog

Processing IC2

A/D 2

8 bit data

G411D507.WMF

The CCD converts the light reflected from the do cument into an analog signal. The
CCD line has 5,000 pixels and the resolution is 400 dpi (15.7 lines/mm).

The CCD has two output lines, for odd and even pixels. Each of these has an
analog processing IC. The analog processing IC performs the following operations
on the signal from the CCD.

1. Z/C (Zero Clamp)

Adjusts the black level reference for even pixels to mach the odd pixels.

Detailed

Descriptions

2. Signal Amplification
Operational amplifiers in the AGC (Auto Gain Control) circuit amplify the analog

signal. The CPU on the SCU board controls the maximum gains of the
operational ampli fiers .

After the above processes, the analog signals are converted to 8-bit digital signals
by the A/D converters. This gives a value for each pixel on a scale of 256 grades.
Then these signals go to the SCU board.

2-17

IMAGE PROCESSING 22 December 1998

2.4.3 IPU (IMAGE PROCESSING UNIT)

Overview

Opional

IPU

IPU

C
C
D

Analog

Processing

IC 1

Analog

Processing

IC 2

AD

AD

Odd

8

Even

8

IPU

Selector

8

SCUSBU

8

Memory

Controller

8

SCSI SCSI

G411D505.WMF

The image data from the SBU goes to the IPU IC on the SCU board, which carries
out the following processes on the image data.

1. Auto shading

2. Magnification

3. Mirror processing

4. Filtering (MTF and smoothing)

5. γ (gamma) correction

6. Grayscale processing

7. Binary picture processing

8. Error diffusion

9. Dithering

10. White/black conversion

The image data then goes to the memory controller IC.

2-18

22 December 1998 IMAGE PROCESSING

Image processing path

The following image processing is for the scanner (simplex model), not including
the optional IPU. The image processing for each of these units is explained in
separate sections. However, when the optional IPU is installed, the IPU IC on the
SCU only does the shading.

1. Without Optional IPU

SBU

Shading

correction

Magnification/

Mirror Process

2. With Optional IPU

Filtering

SBU

SCU

IPU

correction

γ

SCU

IPU

Shading

correction

Memory

Controller

Dither/

Error Diffusion

Optional

IPU

Binary process

White/black

conversion

G411D500.WMF

Detailed

Descriptions

Shading Correction

The machine scans the white plate opposite the ADF exposure glass to make a
white waveform. Shading correction prevents uneven images caused by
fluctuations in scanned data due to changes in light intensity and CCD sensitivity.

Magnification

Reduction and enlargement in the sub scan direction are done by changing the
scanner motor speed or paper transport motor speed in the ADF. However,
reduction and enlargement in the main scan direction are done by the IPU.

Mirror Processing

A mirror image of the original must be made for output.

Filtering

There are two software filters: the MTF filter and the smoothing filter. The MTF filter
emphasizes sharpness, and is used with text-only documents or documents that
contain text and photo areas. The smoothing filter is used for photo-image
documents.

2-19

IMAGE PROCESSING 22 December 1998

Gamma (γγ) Correction

The gamma curve corrects the response of the CCD to grayscales in the original.

Grayscale Processing

This process generates up to 256 image density levels for each pixel.

Dithering

Dither processing produces good quality grayscale images of photo originals.

Error Diffusion

The error diffusion process reduces the difference in contrast between light and
dark areas of a halftone image. Each pixel is corrected using the difference
between it and the surrounding pixels. The corrected pixels are then compared with
a matrix table.

Binary Picture Processing

Each video signal level is converted from 8-bit to 1-bit (black and white image data)
in accordance with a threshold value.

White/Black Conversion

Inverts the image (converts from white to black and vice versa).

After video processing, the data goes to the host computer through the memory
and SCSI controllers.

2-20

22 December 1998 REVERSE SIDE SCANNING

2.5 REVERSE SIDE SCANNING

2.5.1 OVERVIEW

[A]

Detailed

Descriptions

[B]

G411D516.WMF

The CIS (Contact Image Sensor) unit [A], which is in the document exit area, scans
the reverse side of the document.

The front side of the document is scanned first. Then the document goes to the
reverse side scanning area. The white roller [B] pushes the document against the
CIS unit for scanning and feeds the document to the exit area.

The position of the CIS unit is fixed in the scanner, and cannot be adjusted in the
field.

2-21

REVERSE SIDE SCANNING 22 December 1998

2.5.2 CIS (CONTACT IMAGE SENSOR) UNIT

[A]

[B]

[D]

[C]

G411D513.WMF

[C]

G411D528.WMF

The CIS unit consists of the LED array (68 chips/line x 2 lines) [A], rod lens array
[B], five CCDs [C], and the CIS drive board [D] (this contains the CCD drive circuit,
analog processing circuit, A/D converter, shading correction IC, and LED drive
circuit). The CIS unit scans 4800 pixels in the main scan direction at a resolution of
400 dpi (15.7 lines/mm).

There is a row of LEDs on each side of the CCD so that the light is of almost equal
intensity in all directions. This reduces shadows at the edges of documents.

The five CCDs are arranged as shown above (viewed from directly above the
original feed path). The CCDs have dummy pixels at the ends, so to get a
continuous scan across the page, the CCDs have to overlap. However, as a result,
a continuous line cannot be scanned across the page at the same time. Data is
held in memory and combined later.

In book mode when scanning the front side, the scanner may stop if the buffer fills
up. This may happen if the data is complex. Scanning may not start again in
exactly the same place, due to mechanical inaccuracies. This is not a big problem
when scanning the front side. However, for the reverse side, because a complete
scan line is not scanned at the same time, it could mean loss of data.

Because of this, reverse side scanning is only enabled at 6 reproduction ratios
(expressed in the driver as dpi: 100, 200, 300, 400, 500, and 600 dpi). This is
because there is not enough memory to buffer the data and calculate the pixels for
the resulting image at other resolutions without stopping the scanner.

2-22

22 December 1998 REVERSE SIDE SCANNING

2.5.3 IMAGE SCANNING

Analog

Processing

Circuit
Analog

Processing

Circuit

C

L
E
D

C
D

Analog

Processing

Circuit
Analog

Processing

Circuit
Analog

Processing

Circuit

AD

AD

AD

AD

AD

Shading

Correction

Odd

Even

CIS

8

8

RCU

IPU

RCU

8

Memory

Controller

SCU

SCSI SCSI

8

G411D504.WMF

Detailed

Descriptions

CIS

Shading

correction

Magnification/

Mirror Process

Filtering

correction

γ

IPU

Error Diffusion

Dither/

Binary Process

Memory

Controller

White/black

conversion

G411D526.WMF

As explained on the previous page, the CIS unit contains five CCDs. The analog
signal from each CCD goes to an analog processing IC. The function of the analog
processing circuit is the same as for the SBU. After this, the analog signal is
converted to a digital signal by the A/D converter. Then, the data goes to the
shading circuit for correction. After shading, the data is divided to two signals: Odd
and Even. Then, these go to the IPU on the RCU board.

The RCU board contains the IPU and memory controller ICs for image processing.
The image processing in the IPU is the same as for the IPU in the SCU except for
the shading correction.

After image processing, the data goes to the PC through the SCSI controller on the
SCU.

2-23

ENDORSER UNIT 22 December 1998

2.6 ENDORSER UNIT

2.6.1 OVERVIEW

[D]

[B]

G411D516.WMF

[A]

[C]

[D]

[A]

G411D514.WMF

The endorser unit [A] is located just before the exit roller [B]. The endorser unit
prints up to 19 characters (which are input using the scanner driver) at the trailing
edge of the document.

The endorser operates as follows.

1. The user inputs characters and enables the endorser function using the
scanner driver.

2. The scanner operates in the normal ADF mode.

3. The paper transport motor stops at a certain time after the leading edge of the
paper passes through the feed-out sensor.

4. The endorser motor turns on.

5. The endorser solenoid [C] is energized and the paper holding plate [D] goes
down to hold the original.

6. The endorser prints the characters.

7. After printing, the endorser motor turns off.

8. The endorser solenoid is de-energized and the paper holding plate goes up to
release the original.

9. The paper transport motor turns on ag ai n, and the original is fed to the original
tray.

2-24

22 December 1998 ENDO RSER UNI T

2.6.2 ENDORSER UNIT

[D]

[C]

[F]

[E]

[A]

[B]

G411D515.WMF

The endorser unit consists of the endorser motor [A], clutch [B], character belt [C],
hammer unit [D], and ink roller [E].

Detailed

Descriptions

The endorser motor drives the character belt and hammer unit and operates the
hammer [F].

The clutch controls the print timing.
The ink roller always contacts the character belt and always supplies ink to the belt.

When the ink is used up, the customer replaces only t he ink roller.

2-25

LOW POWER MODE 22 December 1998

2.7 LOW POWER MODE

W

15 min.

12 W

t

Operation Stand-by mode Low power mode

G411D525.WMF

When the scanner has been idle for 15 minutes (this interval cannot be adjusted),
the scanner automatically enters low power mode. However, the scanner cannot
enter low power mode when a document jam or system error exists.

NOTE:

The scanner can enter low power mode if the ADF cover and/or platen
cover is open or paper remains on the document table.

When the scanner enters low power mode, the PSU cuts the +24 V, +12 V, –12 V
and +5 Vs supplies, and continues to supply +5VE only. As a result, the scanner
consumes less than 12 W. The operation panel indicates that the machine is in low
power mode with the following LEDs.

LED Status

Power on Blinking
Machine busy Off
Document in place Off
Error Off

The scanner returns to stand-by mode when the ADF cover and/or platen cover is
opened and closed, or when the user places a document on the document table, or
when a Read command is received from the computer.

2-26

22 December 1998 MAIN PCBS AND THEIR FUNCTIONS

2.8 MAIN PCBs AND THEIR FUNCTIONS

2.8.1 BOARD STRUCTURE

Endorser Unit

CIS Unit

RCU

SCU

ADU

IOB

Clutches

Sensors

Motors

SBU

Operation

Panel

Scanner

Motor

H.P Sensor

Lamp

Stabilizer

ADF

Main

Frame

Exposure

Lamp

Detailed

Descriptions

Optional IPU

PSU

Cooling

Fan

G411D509.WMF

For the main function of each PCB, refer to the Electrical Component Layout
section.

2-27

MAIN PCBS AND THEIR FUNCTIONS 22 December 1998

2.8.2 SCU (SCANNER CONTROL UNIT)

Optional IPU RCU

SCU

Odd

Even

IOB

SEL

Memory

Controller

OSC

SCSI

Controller

SCSI 1SCSI 2

EPROM

4 Mbit (x16)

IPU

OSC

SRAM

256 kbit (x8)

Image data Signal line

E2PROM

2 kbit

Reset IC

CPU Bus

DRAM

16 Mbit (x16)

CPU

OSC

EIO

SCSI

Terminator

DIP SW

SCSI ID

Rotary

SW

G411D512.WMF

This is the main board. The functions of each component are as follows.
CPU: HD6413002F

•

Scanner sequence control

•

Clock/timer control

•

DMA control

IPU (Image Processing Unit):

•

Shading correction

•

Image processing (Mirror image, reproduction ratios, MTF correction, binary

picture processing, edge extraction, and so on)

Memory Controller:

•

Stores the image data from the IPU in the memory (DRAM 32 Mbytes x 2).

•

Address contro l whe n re calling the data from the memory.
SCSI controller: SCSI interface controller.
SRAM: Work area (32 kbytes)
EPROM: Contains the program.
Enhanced I/O (EIO):

•

Extension for the I/O port.

•

DIP switches (mode selection), rotary switches (SCSI ID setting), and a push

switch (reset button) are connected.

E2PROM: Holds the book, ADF, and lamp counter values.

2-28

22 December 1998 MAIN PCBS AND THEIR FUNCTIONS

2.8.3 IOB (INPUT/OUTPUT BOARD)

IOB

SBU

PSU

Interlock

Switch

SCU

+ 5V

+ 12V

+ 24V
+ 24V ADU

Scanner

Motor Driver

Driver

Driver

Driver

Scanner

Motor

H.P Sensor

Lamp

Stabilizer

Exposure Lamp

Operation

Panel

ADU

Detailed

Descriptions

G411D510.WMF

The IOB contains the drive circuits for the scanner motor and the exposure lamp.
The control signals such as drive and rotation direction, and drive current for the
scanner motor come from the SCU. Also, the control signal for the exposure lamp
comes from the SCU.

The image signals from the SBU go through this board to the SCU.

2-29

MAIN PCBS AND THEIR FUNCTIONS 22 December 1998

2.8.4 ADU (ADF DRIVE UNIT)

ADU

Motor Driver

Paper

Transport

Motor

IOB

+ 5V
+ 24V ADU
+ 12V

- 12V

+ 24V ADU

+ 5V

+ 5V

+ 12V

- 12V

+ 15V

Motor Driver

Paper

Feed

Motor

Clutches

Sensors

EDU

CIS Unit

G411D511.WMF

The ADU drives the motors and clutches in the ADF unit. Also, it informs the
sensor status to the SCU.

The SCU generates the control signals for each electrical component and the
endorser, then these are sent to the ADU through the IOB. The drivers on the ADU
convert the control signals into drive pulses for the motors.

2-30

22 December 1998 ENVIRONMENT

3. INSTALLATION

3.1 ENVIRONMENT

3.1.1 PRECAUTIONS

Please observe the following precautions in order to ensure safe operation of the
scanner and to realize its full performance.

• Ambient illumination must be less than 2,000 lux (do not expose to direct

sunlight).

• Do not use the scanner in any location that is exposed to frequent vibration.

• Do not expose the scanner to dusty or corrosive atmospheric conditions.

• Ensure that the area in which the scanner is used is well ventilated (30

m3/hr/person).

• Make sure that the surface on which you place the scanner is stable and level.

3.1.2 ENVIRONMENTAL CONDITIONS

Installation

Temperature: 10°C to 32°C (50 to 90°F)
Humidity: 20 to 80 %

3.1.3 MACHINE LEVEL

1. Front to back: Within 5 mm (0.2") of level

2. Right to left: Within 5 mm (0.2") of level

3.1.4 MINIMUM SPACE REQUIREMENTS

Place the scanner near a power source, providing clearance as shown.
A: 10 mm (0.2") B: 30 mm (1.2") C: 600 mm (23.7")

A

D

CB

G411I500.WMF

3-1

SCANNER INSTALLATION 22 December 1998

3.1.5 POWER REQUIREMENTS



CAUTION

1. Be sure to ground the scanner.

2. Make sure the plug is firmly inserted in the outlet.

3. Avoid multi-wiring.

1. Input voltage level:

• 102 to 138 V ac (45 to 65 Hz)

• 187 to 276 V ac (45 to 65 Hz)

2. Permissible voltage fluctuation: ± 10%

3.2 SCANNER INSTALLATION

Please refer to the scanner user’s manual for details.

3.3 IPU UNIT INSTALLATION

Please refer to the scanner user’s manual for details.

3-2

22 December 1998 ENDORSER UNIT INSTALLATION

3.4 ENDORSER UNIT INSTALLATION

3.4.1 ACCESSORY CHECK

Check the quantity and condition of the accessories in the box against the following
list:

Description Q’ty

1. Endorser Unit ......................................................................... 1

2. Solenoid Ass’y........................................................................ 1

3. EDU Board ............................................................................. 1

4. Harness.................................................................................. 1

5. Ink Roller ................................................................................ 1

6. Decal...................................................................................... 1

7. Screw - M3 x 6 ....................................................................... 2

8. Card Spacer ........................................................................... 1

9. Installation Procedure............................................................. 1

Installation

3-3

ENDORSER UNIT INSTALLATION 22 December 1998

3.4.2 INSTALLATION PROCEDURE

1. Open the ADF cover [A]. Remove the

ADF upper cover [B] (2 screws), ADF
right cover [C] (1 screw), and the
endorser cover [D].

NOTE:

Remove the right cover by
carefully lifting it from the rear.

2. Install the spacer [E] and the EDU

board [F] (2 screws).

[C]

[B]

[A]

[D]

G514I501.WMF

[F]

3. Route the cable [G] as shown.

NOTE:

Ensure that the end of the
cable with the large connector
[H] is toward the inside of the
machine.

3-4

[H]

[G]

[E]

G514I502.WMF

G514I503.WMF

22 December 1998 ENDORSER UNIT INSTALLATION

4. Install the solenoid assembly [I] as

shown (3 screws).

G514I504.WMF

[K]

5. Install the clamp [J] and connect the

[L]

three cables [K] to the EDU board [L].

[I]

Installation

6. Install the core [M].

7. Open the platen cover. Install the

endorser unit [N], as shown (1
connector).

8. Attach the decal [O].

[J]

[M]

G514I505.WMF

[O]

[N]

9. Reinstall the endorser, right, and upper covers.

3-5

G514I506.WMF

ENDORSER UNIT INSTALLATION 22 December 1998

3.4.3 STAMP DENSITY ADJUSTMENT PROCEDURE

1. Open the ADF cover [A]. Remove the

ADF upper cover [B] (2 screws), ADF
right cover [C] (1 screw), and the
endorser cover [D].

NOTE:

Remove the right cover by
carefully lifting it from the rear.

2. Remove the solenoid assembly screw

[E] from the hole [F] and replace it in
hole [G]. Do not tighten the screw yet.

3. Loosen the screw [H] and adjust the

height of the bracket [I].

NOTE:

To reduce the stamp density,
raise the bracket. To increase
the density, lower the bracket.

[C]

[B]

[A]

[D]

G514I501.WMF

[F]

[I]

[G]

4. Tighten the assembly screw [E] to

secure the bracket in the new position.

5. Reinstall the endorser, right, and upper

covers.

[H]

[E]

G514I507.WMF

3-6

22 December 1998 RED LAMP UNIT INSTALLATION

3.5 RED LAMP UNIT INSTALLATION

3.5.1 ACCESSORY CHECK

Check the quantity and condition of the accessories in the box against the following
list:

Description Q’ty

1. Exposure Lamp ...................................................................... 1

2. Installation Procedure............................................................. 1

Installation

3-7

RED LAMP UNIT INSTALLATION 22 December 1998

3.5.2 INSTALLATION PROCEDURE

1. Remove the rear cover [A] (3 screws).

[A]

G514I500.WMF

2. Remove the stopper brackets [B].

3. Remove the pins [C].

[B]

[C]

[B]

G514I510.WMF

3-8

22 December 1998 RED LAMP UNIT INSTALLATION

[D]

4. Open the platen cover and remove

the lamp cover [D] (2 screws).

G514I508.WMF

Installation

5. Remove the exposure lamp [E] (1

[E]

screw).

G514I509.WMF

6. Install the red lamp (1 screw, 1 connector) in the place of the exposure lamp.

7. Reinstall the lamp cover, the pins, the stopper brackets, and the rear cover.

3-9

22 December 1998 DIP SWITCH SETTINGS

4. SERVICE LEVEL FUNCTIONS

4.1 DIP SWITCH SETTINGS

The factory default position of the dip switches is indicated in the diagram below.
After changing a dip switch setting, either switch the power off and then on again,

or press the reset switch.

OFF

1234 6758

ON

G411M500.WMF

Dip Switch Setting Table

Dip Switch Item Contents

SCAM function
switch

1234 6758

ON

SCSI synchronous
transfer switch

1234 6758

ON

Internal SCSI
terminator switch

1234 6758

ON

Do not adjust switch 4. This is for factory use only.

Service level test modes

Various tests for the scanner are carried out using dip switches 5 to 8.
Within each test mode, tests are selected by turning the SCSI ID rotary
switch, and the machine's condition is indicated by the four LEDs on the
covers.

ON

1234 6758

Note the position of the SCSI ID rotary switch before you change it.
To return to normal operation mode after testing, switch dip switches 5 to 8
all off, return the SCSI ID rotary switch to its operating position, then press
the reset button.

Demonstration mode

1234 6758

ON

OFF: SCAM function enabled
ON: SCAM function disabled

OFF: SCSI synchronous transfer enabled
ON: SCSI synchronous transfer disabled

OFF: Internal SCSI terminator on
ON: Internal SCSI terminator off

Scanner demonstration in book and ADF modes;
Refer to Table A later in this section.

ON

Tables

Service

Component test
mode

1234 6758

ON

Sensor test mode Each sensor can be tested; refer to Table C later in

1234 6758

ON

Self diagnostic mode Results of the diagnosis are indicated through a

1234 6758

ON

Each component can be tested; refer to Table B later
in this section.

this section.

combination of the LEDs on the covers; refer to Table
D later in this section and “Troubleshooting” in
section 6.

4-1

DIP SWITCH SETTINGS 22 December 1998

g

y

Dip Switch Item Contents

ADF counter
indication

1234 6758

ON

Book mode counter
indication

1234 6758

ON

Exposure lamp on
time indication

1234 6758

ON

CIS on time
indication

1234 6758

ON

The number of pages scanned in ADF mode is
indicated throu

h a combination of the SCSI ID rotar
switch position and the LEDs; refer to Table E later in
this section.
(Unit = 1 sheet, Max. value = 2,500k sheets)

The number of pages scanned in book mode is
indicated in the same way as described above for
ADF mode; refer to Table E later in this section.
(Unit = 1 sheet, Max. value = 1,000k sheets)

The total illumination time of the lamp is indicated in
the same way as above.
(Unit = 1 hour, Max. value = 3,000 hours)

The total illumination time of the CIS is indicated in
the same way as above.

ADF counter
indication

1234 6758

ON

(Reverse side)
Endorser character

counter indication

1234 6758

ON

The number of pages scanned in ADF mode is
indicated in the same way as above.
(Unit = 1 sheet, Max. value = 2500 k sheets)

The number of endorser characters is indicated in the
same way as above.

Counter reset mode After the dip switches are set to on, and the Start

button is held down for more than 3 seconds, all
LEDs are turned off, all counters which are stored in

2

PROM are cleared.

1234 6758

ON

the E
(These counters are the ADF mode, book mode,
exposure lamp, CIS and endorser character
counters.)

NOTE:

If you change the position of the SCSI ID rotary switch during these tests,
be sure to put it back to the original position after you have finished.

Table A: Demonstration Mode

SCSI ID Rotary Switch No. Contents

0 200 dpi scan in book mode
1 400 dpi scan in book mode
2 200 dpi scan in ADF mode
3 400 dpi scan in ADF mode
4 200 dpi scan in endorser mode
5 400 dpi scan in endorser mode
6 200 dpi scan in duplex mode
7 400 dpi scan in duplex mode
8ADF free run *
9 Not used

1

*1: The scanner drives the ADF without any documents.

NOTE:

During the demonstration, the LEDs indicate the machine status as usual.
But if an error occurs during the demonstration (e.g. mis-feed, jam, etc.),
the scanner stops, and the LEDs indicate the error condition.

4-2

22 December 1998 DIP SWITCH SETTINGS

Table B: Component Test Mode

SCSI ID Rotary Switch No. Contents

0 All components off
1 Exposure lamp on/off *
2 Document table lift clutch on/off *
3 Pick-up clutch on/off *
4 CIS LEDs on/off *
5 Endorser solenoid *

1

1

1

1

1

6 Cooling fan motor on/off
7 Not used
8 Not used
9 Not used

*1: When the Start button is pressed to start the test, the component turns on and

off repeatedly.

Table C: Sensor Test Mode

SCSI ID Rotary Switch No. Contents

0 Home position sensor
1 Read sensor
2 Document table position sensor
3 Document sensor
4 ADF cover interlock switch
5 Feed sensor
6 Feed-out sensor
7 Relay sensor
8 Not used
9 Not used

If the selected sensor is on, all LEDs turn on. If the selected sensor is off, all LEDs
turn off.

Tables

Service

4-3

DIP SWITCH SETTINGS 22 December 1998

Table D: Self Diagnostic Mode

During the self-diagnostic mode, the scanner performs the following tests.

1) Home position error check

2) Exposure lamp error check

3) White level error check

4) Document table error check

5) SCU error check

6) RCU error check

7) IPU error check

8) CIS LEDs error check

9) Memory error check

If the scanner detects errors, the first error that occurred is indicated by a
combination of four LEDs.

LEDs

Error Items

SCU error Blinking — — Blinking
RCU error Blinking — On Blinking

IPU error Blinking On — Blinking

Home position error Blinking Blinking Blinking On

Exposure lamp error Blinking Blinking On On

White level error Blinking Blinking — —

CIS Leds error Blinking Blinking On Blinking

Memory error (Simplex) Blinking — — —

Memory error (Duplex) — Blinking — —

Power On

(Green)

Machine

Busy (Green)

Document in

Place (Green)

Error
(Red)

On: LED on Blinking: LED blinking —: LED off

Table E: Counter Indication Mode

Rotary Switch Table

SCSI ID Rotary Switch No. Contents

0 Not used
1Units
2 Tens
3 Hundreds
4 Thousands
5 Ten thousands
6 Hundred thousands
7 Millions
8 Not used
9 Not used

4-4

22 December 1998 DIP SWITCH SETTINGS

LED Indication Table

LEDs

Counter Value

0————
1———On
2——On—
3——OnOn
4—On——
5—On—On
6 — On On —
7 — On On On
8On———
9On——On

Power On

(Green)

Machine Busy

(Green)

Document in

Place (Green)

Error
(Red)

On: LED on —: LED off

Use the rotary switch to select a digit of the counter. The value of the selected digit
is indicated by a combination of the four LEDs. For the LEDs, “ON” represents a 1
and “OFF” represents a 0. The four LEDs are read off as a four-bit number.

Example:

Rotary switch no LED condition

1 (units) (ON, OFF, OFF, OFF) = 1000 = 8
2 (tens) (OFF, OFF, ON, ON) = 0011 = 3
3 (hundreds) (OFF, ON, OFF, ON) = 0101 = 5
4 to 7 (OFF, OFF, OFF, OFF) = 0000

>>> Total counter value = 538 sheets

Tables

Service

4-5

LEDS/TEST POINTS 22 December 1998

4.2 LEDs/TEST POINTS

4.2.1 LEDs

SCU/LEDs

Number Monitored Signal

LED1 +5VS
LED2 +5VE
LED3 CPU clock

4.2.2 TEST POINTS

ADU

Number Monitored Signal

TP301 +24 V
TP302 –12 V
TP303 +12 V
TP304 COM
TP305 +5VE
TP308 +5VS
TP309 COM

4.3 SPECIAL TOOLS

Part Number Part Name

A0069104 Scanner Positioning Pin (4 pcs/set)
G4049003 RS-13 Chart (A5)
G4049005 RS-13 Chart (A4)
G4049004 RS-13 Chart (A3, 55 kg)
G4049006 RS-13 Chart (A3, 90 kg)
H2039114 RS-12 Chart (A3)

4-6

22 December 1998 COVERS

5. REPLACEMENT AND ADJUSTMENT



CAUTION
Before starting disassembly, be sure to turn off the main switch and
disconnect the power cord and interface cable(s) for safety.

5.1 COVERS

5.1.1 ADF EXTERIOR

[B]

[A]

[D]

G411R500.WMF

1. Open the ADF cover [A].

2. Remove the ADF upper cover [B] (2 screws).

3. Remove the ADF right cover [C] (1 screw).
NOTE: Remove the ADF right cover by carefully lifting it from the rear.

4. Remove the ADF left cover [D] (1 screw).

[C]

Adjustment

Replacement

5-1

COVERS 22 December 1998

5.1.2 ADF COVER

[A]

[B]

G411R501.WMF

G411R502.WMF

1. Remove the ADF upper and ADF right cover (see ADF Exterior).

2. Remove the rear cover (see Scanner Exterior/Operation Panel).

3. Open the platen cover vertically (see Exposure Glass).

4. Remove the spring [A].

5. Remove the pin [B] (1 screw).

6. Remove the ADF cover [C] (1 connector).

[C]

5-2

22 December 1998 COVERS

5.1.3 SCANNER EXTERIOR/OPERATION PANEL

[C]

[B]

[D]

[A]

G411R503.WMF

1. Remove the operation panel [A] (1 screw).

2. Remove the front cover [B] (3 screws).

3. Remove the left cover [C] (2 screws).

4. Remove the right cover [D] (2 screws).

5. Remove the rear cover [E] (3 screws).

G411R504.WMF

[E]

Adjustment

Replacement

5-3

ADF AND UPPER SIDE 22 December 1998

5.2 ADF AND UPPER SIDE

5.2.1 DOCUMENT SENSOR

[A]

G411R505.WMF

1. Remove the ADF upper cover (see ADF Exterior).

2. Remove the document sensor [A] (1 connector, 2 screws).

5.2.2 SEP ARATION UNIT

[A]

G411R506.WMF

1. Remove the ADF upper, ADF left, and ADF right cover (see ADF Exterior).

2. Remove the separation unit [A] (3 connectors, 4 screws).

5-4

22 December 1998 ADF AND UPPER SIDE

5.2.3 DOCUMENT TABLE ASSEMBLY

[A]

G411R507.WMF

1. Remove the separation unit (See Separation Unit).

2. Remove the document table assembly [A] (3 screws).

5.2.4 CIS

[B]

[A]

Adjustment

Replacement

G411R508.WMF

1. Remove the document table assembly (See Document Table Assembly).

2. Remove the stopper bracket [A] (1 screw).

3. Remove the ADU (See ADU/Paper Transport Motor).

4. Remove the CIS [B] (2 connectors, 1 screw).

5-5

ADF AND UPPER SIDE 22 December 1998

5.2.5 SCANNING GUIDE PLATE

[A]

G411R509.WMF

1. Remove the ADF upper, ADF left, and ADF right cover (See ADF Exterior).

2. Remove the scanning guide plate [A] (2 screws).

5.2.6 FEED SENSOR

[C]

[A]

[B]

G411R510.WMF

1. Open the ADF cover [A].

2. Remove the feed cover [B] (2 screws).

3. Remove the feed sensor [C] (1 connector, 1 screw).

5-6

22 December 1998 ADF AND UPPER SIDE

5.2.7 RE AD SENSOR

[A]

G411R511.WMF

1. Remove the rear cover (See Scanner Exterior/Operation Panel).

2. Remove the read sensor [A] (1 connector, 1 screw).

5.2.8 FEED-OUT SENSOR

[B]

[A]

Adjustment

Replacement

G411R512.WMF

1. Remove the feed-out cover [A] (2 screws).

2. Remove the feed-out sensor [B] (1 connector, 1 screw).

5-7

ADF AND UPPER SIDE 22 December 1998

5.2.9 P APER TRANSPORT DRUM

[A]

[B]

G411R513.WMF

[D]

[C]

G411R515.WMF

1. Remove the separation unit (see Separation Unit).

2. Remove the paper feed motor (see Paper Feed Motor).

3. Remove the ADU (see ADU/Paper Transport Motor).

4. Remove the pape r transport motor (see ADU/Paper Transport Motor).

5. Remove the registration guide plate [A] (1 connector, 2 screws).

G411R514.WMF

6. Remove the rear cover (see Scanner Exterior/Operation Panel).

7. Remove the stopper brackets [B] (1 screw each).

8. Remove the pins [C].

9. Open the ADF cover.

10. Remove the paper transport drum [D] (2 E-rings, 2 bearings).

5-8

22 December 1998 ADF AND RIGHT SIDE

5.3 ADF AND RIGHT SIDE

5.3.1 PAPER FEED MOTOR

[A]

G411R516.WMF

1. Remove the ADF upper and ADF right cover (see ADF Exterior).

2. Remove the paper feed motor [A] (1 connector, 3 screws).

5.3.2 EDU

[A]

G411R517.WMF

Adjustment

Replacement

1. Remove the ADF upper and ADF right cover (see ADF Exterior).

2. Remove the EDU [A] (3 connectors, 2 screws).

5-9

ADF AND RIGHT SIDE 22 December 1998

5.3.3 ENDORSER SOLENOID

[A]

G411R518.WMF

1. Remove the ADF upper and ADF right cover (see ADF Exterior).

2. Remove the endorser solenoid [A] (1 connector, 3 screws).

5.3.4 RELAY SENSOR

[A]

G411R519.WMF

1. Remove the ADF upper and ADF right cover (see ADF Exterior).

2. Remove the relay sensor [A] (1 connector, 1 screw).

5-10

22 December 1998 ADF AND LEFT SIDE

5.4 ADF AND LEFT SIDE

5.4.1 ADU/PAPER TRANSPORT MOTOR

[B]

[A]

G411R520.WMF

1. Remove the ADF upper and ADF left cover (see ADF Exterior).

2. Remove the ADU [A] (10 connectors, 3 screws).

3. Remove the paper transport motor [B] (1 connector, 3 screws).

5.4.2 DOCUMENT TABLE POSITION SENSOR

[A]

Adjustment

Replacement

G411R521.WMF

1. Remove the ADF upper and ADF left cover (see ADF Exterior).

2. Remove the document table position sensor [A] (1 connector, 1 screw).

5-11

ADF AND LEFT SIDE 22 December 1998

5.4.3 PICK-UP CLUTCH/DOCUMENT TABLE LIFT CLUTCH

[C]

[A]

[B]

G411R522.WMF

1. Remove the ADF upper and ADF left cover (see ADF Exterior).

2. Remove the stopper bracket [A] (2 screws).

3. Remove the pick-up clutch [B] (1 connector).

4. Remove the document table lift clutch [C] (1 connector, 1 E-ring).

5-12

22 December 1998 SCANNER

5.5 SCANNER

5.5.1 EXPOSURE GLASS

[A]

[B]

[E]

G411R514.WMF

1. Remove the rear cover (See Scanner Exterior/Operation Panel).

[C]

[D]

G411R523.WMF

Adjustment

Replacement

2. Remove the stopper brackets [A] (2 screws).

3. Remove the pins [B].

4. Open the platen cover vertically.

5. Remove the lamp cover [C] (2 screws).

6. Remove the scale [D] (3 screws).

7. Remove the exposure glass [E].

5-13

SCANNER 22 December 1998

5.5.2 EXPOSURE LAMP

[B]

[A]

G411R524.WMF

1. Remove the exposure glass (see Exposure Glass).

2. Slide the 1st scanner to the cutout [A] in the right frame.

3. Remove the exposure lamp [B] (1 connector, 1 screw).

5-14

22 December 1998 SCANNER

5.5.3 SBU/LAMP STABILIZER/SCANNER MOTOR/PSU

[A]

[C]

[B]

[D]

G411R525.WMF

G411R526.WMF

[E]

[F]

G411R527.WMF G411R528.WMF

1. Remove the exposure glass (see Exposure Glass).

2. Remove the lens cover [A] (4 screws).

3. Disconnect the flexible cable [B]

4. Remove the SBU [C] (4 screws).

5. Remove the lamp stabilizer [D] (2 connectors).

Adjustment

Replacement

6. Remove the operation panel (see Scanner Exterior/Operation Panel).

7. Remove the front cover (see Scanner Exterior/Operation Panel).

8. Remove the scanner motor [E] (1 spring, 1 connector, 2 screws).

9. Remove the PSU [F] (5 connectors, 2 screws).

5-15

SCANNER 22 December 1998

5.5.4 IOB

[A]

[B]

G411R529.WMF

1. Remove the exposure glass (see Exposure Glass).

2. Remove the lens cover (see SBU/Lamp Stabilizer/Scanner Motor/PSU).

3. Remove the PCB cover [A] (6 screws).

4. Remove the IOB [B] (5 connectors, 4 screws).

5-16

22 December 1998 SCANNER

5.5.5 SOP

[A]

G411R538.WMF

1. Remove the operation panel and the front cover (see Scanner
Exterior/Operation Panel).

2. Remove the SOP (1 connector).

5.5.6 HOME POSITION SENSOR

[A]

Adjustment

Replacement

G411R530.WMF

1. Remove the right cover (see Scanner Exterior/Operation Panel).

2. Remove the home position sensor [A] (1 connector, 1 screw).

5-17

SCANNER 22 December 1998

5.5.7 ADF INTERLOCK SWITCH

[A]

G411R531.WMF

1. Remove the rear cover (see Scanner Exterior/Operation Panel).

2. Remove the ADF interlock switch [A] (1 connector, 1 screw).

5-18

22 December 1998 SCANNER

5.5.8 SCANNER WIRE

[B]

G411R532.WMF

[A]

[C]

[D]

G411R534.WMF

1. Remove the exposure glass (see Exposure Glass).

G411R533.WMF

Adjustment

Replacement

2. Remove the stopper brackets [A] (1 screw each).

3. Remove the ADF [B] (4 connectors, 4 screws).

4. Remove the operation panel, front cover, right cover, and left cover (see
Scanner Exterior/Operation Panel).

5. Remove the left frame [C] (11 screws).

6. Remove the right frame [D] (11 screws).

5-19

SCANNER 22 December 1998

[A]

[F]

[B]

[E]

[D][C]

G411R536.WMF

7. Remove the right and left scanner wire brackets [A] (1 screw each). Then,
remove the 1st scanner.

8. Remove the tension spring [B].

9. Loosen the screw [C] securing the wire tension bracket [D].

10. Remove the scanner wire [E].

11. Secure the 2nd scanner with the scanner positioning tools (P/N A0069104) [F].

12. Wind the new scanner wire around the scanner drive pulley in the correct



direction, as shown (

).

13. Wind the end of the new wire with the ball as shown ().

14. Wind the end of the new wire with the ring as shown (,  and ).

15. Wind the new scanner wire for the other side as well.

16. Install the tension spring [B] on the wire tension bracket [D].

17. Tighten the wire tension bracket [D].

5-20

22 December 1998 SCANNER

[H]

[G]

G411R535.WMF

18. Install the 1st scanner and adjust its position with the scanner positioning tools
(P/N A0069104) [G].

19. Secure the 1st scanner with the scanner wire bracket [H] (1 screw each).

20. Remove the positioning tools. After sliding the scanner to the front and back
several times, set the positioning tools to check the scanner wire bracket and
tension bracket again.

21. Reassemble the scanner.

Adjustment

Replacement

5-21

PCB 22 December 1998

5.6 PCB

5.6.1 SCU/RCU/IPU

[C]

[B]

[A]

1. Remove the SCU assembly [A] (2 screws).

2. Remove the RCU [B] (3 screws).

3. Remove the IPU [C] (1 screw).

NOTE:

When replacing the SCU, put the old ROM (IC31) on the new SCU.

G411R537.WMF

5-22

22 December 1998 SELF-DIAGNOSTICS

6. TROUBLESHOOTING

6.1 SELF-DIAGNOSTICS

The scanner automatically performs a series of self-diagnostic checks each time
the power is turned on. If an error is detected, it is displays the type of error using
the four LEDs on the scanner. See “Detailed Section Descriptions - Initialization”
for more details of the initialization procedure.

6.2 CHECK ITEMS

6.2.1 ITEMS CHECKED DURING INITIALIZATION

The self-diagnostics check the following items at power-up.

1) The ADF or ADF cover is not closed properly.

2) An original is jammed in the ADF.

3) There is a problem with the operation of the document table.

4) Memory error (system error)

Does the memory in the scanner work properly?

5) Home position error (system error)

Have the scanners reached home position properly?

6) Exposure lam p error (system error)

Is the standard white level detected properly?

NOTE:

• If an error is detected for any of items 4) to 6), “System Error” is
indicated, and the details can be checked with the self-diagnostics (see
section 6-3).

• Even if an error is detected for item 2), scanning can start in book mode.

Trouble-

shooting

6-1

ERROR INDICATION 22 December 1998

6.3 ERROR INDICATION

If the self-diagnostics find an error, the error is displayed by a combination of the
four LEDs on the scanner. If the dip switches on the rear of the machine are set up
for normal operation, the error is indicated roughly for users. When the dip switches
are set to the self-diagnostic mode position, the system error is indicated in detail
for technicians.

6.3.1 USER LEVEL ERROR INDICATION

Conditions Contents

Machine
Initialization

Demonstration
Mode

Stand-by

User-visible
Error Conditions

System Error Blinking Blinking Blinking Blinking

Overall
machine check

Scan wait
mode

ADF cover switch open On Off Off On
Document jam On Off Blinking On
Document misfeed On Off On On
Document table error On Off Blinking Blinking
Endorser error Blinking Blinking On Off

Originals on

the table

No On Off Off OffNormal mode

Yes On Off On Off

No On Off Blinking Off

Yes On Off Blinking Off

No On On Off OffScanning Normal mode

Yes OnOnOnOff

On: LED on Blinking: LED blinking Off: LED off

Green Green Green Red

On On On On
On On On On

LEDs

6.3.2 TECHNICIAN LEVEL ERROR INDICATION

Error Items

Memory error (Simplex) Blinking Off Off Off

Memory error (Duplex) Off Blinking Off Off

Exposure lamp failure Blinking Blinking On On

CIS error Blinking Blinking On Blinking

White level error Blinking Blink ing Off Of f

Home position error Blinking Blinking Blinking On

SCU error Blinking Off Off Blinking
RCU error Blinking Off On Blinking

Optional IPU error Blinking On Off Blinking

On: LED on Blinking: LED blinking Off: LED off

Green Green Green Red

LEDs

6-2

22 December 1998 TROUBLESHOOTING PROCEDURES

6.4 TROUBLESHOOTING PROCEDURES

There are two types of troubleshooting procedure.

•

For user-visible error conditions that the user could not clear up

•

For technician level error conditions

6.4.1 USER-VISIBLE ERROR CONDITIONS

ADF Interlock Switch Open

Symptom:

The problem cannot be solved with the procedures in the user’s manual.

Possible Causes:

•

Defective ADF interlock switch

•

Damaged cable between the ADF interlock switch and the PSU

Procedure:

Does 24 volts come to the ADF cover interlock switch?
Yes No

Is the cable damaged?
Yes No

Replace the PSU.

Replace the cable.

Replace the ADF interlock switch.

Trouble-

shooting

6-3

TROUBLESHOOTING PROCEDURES 22 December 1998

Document Jam

Symptom:

The problem cannot be solved with the procedures in the user’s manual.

Possible Causes:

•

Dama ged separation unit

•

Damaged paper transport drum assy

•

Damaged paper feed-out unit

•

Defective paper transport motor or paper feed motor

•

Defective read sensor or feed-out sensor

•

Defective SCU, IOB or ADU

Procedure:

First of all, check the sensors with demonstration and sensor check mode. See
Service Level Functions – Dip Switch Settings.

Are all the sensors OK?
Yes No

Is the cable damaged?
Yes No

Replace the sensor.

Replace the cable.
Does the jam always happen at the same position?
Yes No

Are the 24-volt lines from the PSU to the IOB (24VADU) or from

the IOB to the ADF OK?

Yes No

Is the cable damaged?
Yes No

Replace the PSU.

Replace the cable.
Is the 24-volt line from the ADU to the paper transport motor OK?
Yes No

Is the cable damaged?

Yes No

Replace the ADU.

Replace the cable.
Replace the paper transport motor.

NOTE:

Did the jam occur at the paper transport drum assy?
Yes No

Replace the paper feed-out assy.

Replace the paper transport drum assy.

If the feed motor is defective, a “Document Table Error” is

generated.

6-4

22 December 1998 TROUBLESHOOTING PROCEDURES

Paper Misfeed

Symptom:

The problem cannot be solved with the procedures in the user's manual.

Possible Causes:

•

Dama ged separation unit

•

Defective pick-up clutch

•

Defective ADU

•

Defective SCU

•

Defective feed sensor

Procedure:

Does the pick-up roller mechanism work?
Yes No

Is 24 volts supplied to the pick-up clutch?
Yes No

Is the cable damaged?

Yes No

Replace the ADU.

Replace the cable.
Is there an open circuit in the clutch?
Yes No

Replace the SCU.
Replace the pick-up clutch.

Does the jam happen at the separation unit?
Yes No

Replace the pick-up roller.

Replace the separation unit.

6-5

Trouble-

shooting

TROUBLESHOOTING PROCEDURES 22 December 1998

Document Table Error

Symptom:

The problem cannot be solved with the procedures in the user's manual.

Possible Causes:

•

Defective document table position sensor

•

Defective document table clutch

•

Defective paper feed motor

•

Defective ADU

•

Defective SCU

•

Damaged document table

Procedure:

Is the document table itself OK?
Yes No

Replace it.

Does the table work (up/down operation)?
Yes No

Does the separation roller mechanism work?
Yes No

Does 24 volts come to the paper feed motor?

Yes No

Is the cable damaged?
Yes No

Replace the ADU.
If the 24 volts from the PSU
is defective, another error
will be generated.

Replace the cable.

Replace the motor, if it has a defective.
Does the document table lift clutch work.
Yes No

Does 24 volts come to the document table lift clutch?

Yes No

Is the cable damaged?
Yes No

Replace the ADU

Replace the cable.

Replace the document table lift clutch
Check the table lift mechanism.

Replace the SCU.

NOTE:

If the 5-volt line is defective, the ADF LEDs will not work, so the error type
will not be visible. Therefore it can be assumed that there is a problem with
a timing signal. All timing signals are generated in the SCU and the
problem can be fixed by replacing the SCU.

6-6

22 December 1998 TROUBLESHOOTING PROCEDURES

Endorser Error

Symptom:

The problem cannot be solved with the procedures in the user's manual.

Possible Causes:

•

Defective endorser unit

•

Defective EDU

Procedure:

Is the endorser unit is broken?
Yes No

Is the cable between the EDU and the endorser unit or the ADU
and the EDU OK?
Yes No

Replace the cable.
Replace the EDU.

Replace the endorser unit.

6-7

Trouble-

shooting

TROUBLESHOOTING PROCEDURES 22 December 1998

6.4.2 SERVICE CALL ERRORS (SYSTEM ERRORS)

If a system error occurs, the following errors can be detected with the self­diagnostics using the dip switches. See Service Level Functions – Dip Switch
Settings.

Memory Error

Symptom:

This error occurs in the following conditions .

•

SRAM read/write error

•

DRAM read/write error

•

Memory over run error

Possible Cause:

•

Defective SCU

Procedure:

Replace the SCU.

6-8

22 December 1998 TROUBLESHOOTING PROCEDURES

Lamp Error

Symptom:

The white level cannot be adjusted.

Possible Cause:

•

A mirror is out of position.

•

Misalignment

•

Defective SBU

•

Defective IOB

•

Defective SCU

Procedure:

Does the exposure lamp light during scanning?
Yes No

Does 24 volts come to the lamp stabilizer?
Yes No

Is the cable damaged?

Yes No

Replace the PSU.

Replace the cable.
Replace the exposure lamp
Does the exposure lamp light?
Yes No

Replace the lamp stabilizer.
Go to the next step.

Are all mirrors installed properly?
Yes No

Reseat any mirrors that are out of place.

Does the SBU generate the correct signals?
Yes No

Replace the SBU.

Replace the SCU. If that does not work, try changing the IOB.

Trouble-

shooting

Document Table Error

Same as for the user-visible error condition. See section 6-4-1.

6-9

TROUBLESHOOTING PROCEDURES 22 December 1998

CIS Error (duplex model only)

Symptom:

The white level of the reverse side scanning cannot be adjusted.

Possible Cause:

•

Defective CIS unit

•

Defective ADU

•

Defective RCU

•

Defective SCU

Procedure:

Does the LED array light?
YES No

Does 15 volts come to the CIS unit?
Yes No

Is the cable damaged?

Yes No

Replace the ADU.

Replace the cable.

Replace the CIS unit.
Does the CIS generate the correct signals?
Yes No

Replace the CIS unit.
Does the RCU generate the correct signals?
Yes No

Replace the RCU.
Replace the SCU.

6-10

22 December 1998 TROUBLESHOOTING PROCEDURES

Shading Error

Symptoms:

A shading error occurs when one of the following conditions occurs.

•

The difference in black level cannot be adjusted.

•

The black level cannot be adjusted.

•

The white level cannot be adjusted.

Possible Causes:

•

A mirror is out of position.

•

Misalignment

•

Defective SCU

•

Defective SBU

•

Defective exposure lamp

•

Dirty white plate

Procedure:

Is there any problem with the exposure lamp?
Yes No

Is the white plate dirty?
Yes No

Are all the mirrors installed properly?
Yes No

Reseat the mirror.
Does the SBU generate the correct signals?
Yes No

Replace the optical unit.
Replace the SCU.

Replace the ADF exposure cover.

Replace the exposure lamp.

NOTE:

The read signal goes to the SCU through the IOB, but the IOB does not do
any image processing. Therefor e the IOB pr ob a bly does not have a
problem. However, if the problem is not solved even after replacing the
SCU, try changing the IOB.

Trouble-

shooting

6-11

TROUBLESHOOTING PROCEDURES 22 December 1998

Home Position Error

Symptom:

This error is detected when the home position sensor cannot detect the first
scanner.

Possible Causes:

•

Defective scanner motor

•

Damaged cable between the scanner motor and the IOB

•

Defective IOB

•

Defective home position sensor

•

Damaged cable between the home position sensor and the IOB

Procedure:

Does the home position sensor work? Check it with sensor test mode. (See See
Service Level Functions – Dip Switch Settings.)
Yes No

Does 5 volts reach the sensor?
Yes No

Is the cable between the home position sensor
and the IOB OK?
Yes No

Replace the cable.
Replace the PSU.

Replace the sensor.
Is the drive wire OK?
Yes No

Replace it.
Does 24 volts reach the scanner motor?
Yes No

Is the cable between the motor and the IOB damaged?

Yes No

Replace the IOB.

Replace the cable.
Replace the scanner motor.

6-12

22 December 1998 TROUBLESHOOTING PROCEDURES

SCU Error

Symptom:

3.3 volts generated on the SCU failed during scanning.

Possible Cause:

•

Defective SCU

Procedure:

Replace the SCU.

RCU Error

Symptom:

3.3 volts generated on the RCU failed during scanning.

Possible Cause:

•

Defective RCU

Procedure:

Replace the RCU.

Optional IPU Error

Symptom:

3.3 volts generated on the optional IPU board failed during scanning.

Possible Cause:

•

Defective optional IPU board

Procedure:

Replace the optional IPU board.

Trouble-

shooting

6-13

INDICATION WHEN A CONNECTOR IS OUT OF POSITION 22 December 1998

6.5 INDICATION WHEN A CONNECTOR IS OUT OF

POSITION

6.5.1 SCANNER

SCU

1

2

3

4

Connector

1 (CN201) — — — —
2 (CN203) On Off On Off
3 (CN204) On Off Blinking Blinking Document table error
4 (CN210)
5 (CN209) — — — —
6 (CN211) On Off Off On ADF interlock switch open
7 (CN208) — — — —
8 (CN206)

9 Not used Not used Not used Not used
10 (CN202) Blinking Blinking Blinking Blinking System error
11 (CN205)

Green Green Green Red

Blinking Blinking Blinking Blinking

Blinking Blinking Blinking Blinking

Blinking Blinking Blinking Blinking

Scanner LEDs

IOB

6 8

5

7 9

11

10

G411T500.WMF

Remarks

System error

System error

System error

On: LED on Off: LED off Blinking: LED blinking

—: When the machine is switched on, all LEDs should light briefly. However, “—” in
these tables indicates that the LED does not light up briefly at power-up.

6-14

22 December 1998 INDICATION WHEN A CONNECTOR IS OUT OF POSITION

6.5.2 ADF

Document Sensor

13

Document Table Position
Sensor

12

10

9

Feed-out Sensor

14

15

G411T501.WMF

Remarks

Connector

Pick-up Clutch

Document Table Lift
Clutch

11

1

2

3

ADU

4

Green Green Green Red

5 6 87

Scanner LEDs

1 (CN303) On Off Off Of f
2 (CN302) On Off Blinking Blinking Document table error
3 (CN301) On Off On Off
4 (CN306) On Off Off Of f
5 (CN305) On Off Off Of f
6 (CN307) On Off Blinking Blinking Document table error
7 (CN310) On Off Off Of f
8 (CN308) On Off Off Of f
9 (CN309) On Off Off Of f

10 (CN304) On Off Blink ing Blinking Document table error

11 On Of f Blinking Blinking Document table error
12 On Off Off Off
13 On Off On Off
14 On Of f Blinking Blinking Document table error
15 On Off Off Off

Trouble-

shooting

On: LED on Off: LED off Blinking: LED blinking

—: When the machine is switched on, all LEDs should light briefly. However, “—” in
these tables indicates that the LED does not light up briefly at power-up.

6-15

BLOWN FUSE CODITIONS 22 December 1998

6.6 BLOWN FUSE CODITIONS

Fuse

Power Supply Unit

FU1 5 A/125 V 3.15 A/250 V No response.

FU31 4 A/125 V

FU32 4 A/125 V
FU33 5 A/125 V No response.
FU35 5 A/125 V

ADU (Duplex Model)

FU101 1.25 A/250 V CIS error

EDU

FU401 3.15 A/250 V

Lamp Stabilizer

FU1 1 A/60 V Exposure lamp err or

115 V 220 ~ 240 V

Rating Symptom when turning on the main switch

Exposure lamp error
Home position error
White level error

Document table working error
Document jam

Exposure lamp error
RCU error

Endorser error
Endorser does not work.

6-16

22 December 1998 IPU (IMAGE PROCESSING UNIT)

7. OPTION

7.1 IPU (IMAGE PROCESSING UNIT)

7.1.1 OVERVIEW

The IPU does the following.

Dynamic Threshold

This function automatically determines a suitable threshold value based on the
original, and converts the scanned image to binary data.

Auto Photo/Letter

This function automatically identifies the text portions of an original and the
photographic portions, and scans each in a suitable scan mode.

Document Size Detection

This function automatically detects the width of an original, and sends the
information to the host computer.

Section Area

This function selects an area within an original and sets scanning conditions for
that area.

Option

7-1

IMAGE PROCESSING PATH 22 December 1998

γ

7.2 IMAGE PROCESSING PATH

The following image processing is for the scanner with the optional IPU.

SCU

IPU

Size

Detection

Grayscale

Filtering

Dynamic Threshold

Magnification/

Mirror Process

correction

Optional

IPU

Auto Photo/Letter

Section

Binary

Processing

Dynamic

Threshold

Sparation

Area

White/Black

conversion

Binary

Filtering

SCUOptional IPU

Memory

Controller

G411O500.WMF

A suitable threshold value is determined based on the original.

Auto Photo/Letter Separation

Generally, text areas have strong contrast between the image and the background.
In photo areas, mid-range gray areas are common. By using these characteristics,
the original image is separated into text and photo areas.

Section Area

The original image is separated into specified areas. Each area is processed using
the specified scanning mode.

Size Detection

See Detailed Section Descriptions – Scanner Processes.

7-2

1234567891011

HS2P (G407/G408/G410/G411) Point to Point Diagram

A

GND

GND

GND

SDO7

GND

SDO6

GND

SDO5

GND

SDO4

GND

SDO3

GND

SDO2

GND

SDO1

GND

SDO0

GND

SDE7

GND

SDE6

GND

SDE5

GND

SDE4

GND

SDE3

GND

SDE2

FG

B

FG

CN101

1

GND

2

GND

3

GND

4

GND

5

GND

6

GND

7

GND

8

C

D

GND

9

GND

10

GND

11

GND

12

NC

13

NC

14

NC

15

GND

16

GND

17

GND

18

GND

19

GND

20

GND

21

GND

22

GND

23

GND

24

GND

25

GND

26

DB0

27

DB1

SCSI I/F

28

DB2

29

DB3

30

DB4

31

DB5

32

DB6

33

DB7

34

DB8

35

GND

36

GND

37

NC

38

TERMPWR

39

NC

40

GND

41

XATN

42

GND

43

XBSY

44

XACK

45

XRST

46

XMSC

47

XSEL

48

XC/D

49

XRED

50

XI/D

E

F

OIPUB

(Option)

G

H

A1A2A3A4A5A6A7A8A9

CN1

A1A2A3A4A5A6A7A8A9

CN502

GND

123456789

CN501

123456789

CN105

GND

CN102.38Pin

CN104

CN701

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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

FG

OVCLK

XOLGATE

XR3VDTCT

FU1

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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

A11

A10

A12

A13

A14

A15

A16

A17

A18

A19

A20

A21

A22

A23

A11

A10

A12

A13

A14

A15

A16

A17

A18

A19

A20

A21

A22

A23

1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980

1011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980

A(0)

A(2)

A(4)

A(6)

DMAD8

DMAD10

DMAD12

DMAD14

DREQ

XDWR

GND

XCSRCU

XHMR

XHWRN

XRESET

A(8)

A(10)

A(18)

RVSEL

5VE

GND
GND
5VE
5VE
XAWKD(1)
XAWKD(3)
XAWKD(5)
XAWKD(7)
XAWFGT
XALG
GND
XARCLK
GND
XARLSYNC
XARKD(1)
XARKD(3)
XARKD(5)
XARKD(7)
GND
XCSOIPU
XRESET
A(1)
A(3)
A(5)
A(7)
A(9)
A(11)
D(9)
D(11)
D(13)
D(15)
XDIPUINST
GND
GND
GND
GND
5VE
5VE
XAWKD(0)
XAWKD(2)
XAWKD(4)
XAWKD(6)
XAWLSYNC
GND
XAWCLK
GND
XARLGT
XARFGT
XARKD(0)
XARKD(2)
XARKD(4)
XARKD(6)
XINT OIPU
XHWR
XRD
A(0)
A(2)
A(4)
A(6)
A(8)
A(10)
D(8)
D(10)
D(12)
D(14)
XC3VDTCT
GND
GND
GND

CN102

Same as

CN101

SCSI I/F

123456789

CN106

GND

A24

A25

A26

A27

A28

A29

A30

A24

A25

A26

A27

A28

A29

A30

D(8)

GND

D(10)

D(12)

D(14)

MCLK

XRLEDC

GND

NMUTXD

XNMUINST

GND

XWKUP

CIS

SDE1

GND

SDE0

GND

SCLK

GND

GND

GND

/LST

GND

GND

GND

/LGATE

GND

GND

SCN

GND

/LEDC

GND

GND

GND

MCON3

GND

MCON2

GND

MCON1

GND

GND

GNDS2GNDS1GND

PH2

GND

PH1

GND

GND

A31

A32

A33

A34

A31

A32

A33

A34

B1B2B3B4B5B6B7B8B9

B1B2B3B4B5B6B7B8B9

B11

B10

B12

B13

B14

B15

B16

B17

B18

B19

B20

B21

B22

B23

B24

B25

B26

B27

B28

B29

B30

B31

B32

B33

B34

B11

B10

B12

B13

B14

B15

B16

B17

B18

B19

B20

B21

B22

B23

B24

B25

B26

B27

B28

B29

B30

B31

B32

B33

B34

RCU

A(1)

A(3)

A(5)

A(7)

RS1

RPH1

RMCON2

5VS

RSCN1

5VS

5VS

GND

GND

GND

GND

XRCUINST

XOLSYNC

XOFGATE

DMAD9

DMAD11

DMAD13

DMAD15

GND

XDACK

XRDR

XWAIT

XINTRSIBC

GND

PHICLKR

A(9)

D(9)

A(11)

D(11)

A(19)

D(13)

D(15)

WMODE

GND

RSCN

RMCON1

RS2

RPH2

RMCON3

5VS

SCU RSCU

OPTXD

DMAD1

DMAD5

DMAD3NCNCNCNCNCNCNCNC

101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960

XOFGATE

GND

OVCLK

5VE

5VE

5VE

5VE

GND

GND

GND

GND

NMURXD

GND

BEEP

OPRXD

PWDWN

XPAUSE

DMAD14

DMAD12

DMAD10

DMAD8NCNCNCNCNCNCNCNCNCXOLSYNC

XOLGATE

GND

5VS

5VS

5VE

GND

15VLED

GND

–12V

GND

12V

GND

5VS

Relay
Sensor

5VS

GND

5VE

5VE

GND

5VE

CN2

8
7
6
5
4
3
2
1

S6

CN361

Paper Transport
Motor

STM3

Paper Feed
Motor

STM2

GND

XFESN
XRSSN

XSJCL

XEXSN

XINTCP

FMXLK4

MTON

XFMREF3

FMCLK2

XTMRST

TMEB

XTMREF3

TMMODE1

XLUPSN
PSUOFF

XDSET
XTERR

XABORT

XSTART

XSMRST

SMEB
SMMODE1
SMMODE2

XSMREF1

XSSCAN

SOUT
XRDSYNC

CLKSBU

ADO6

ADO4

ADO2

ADO0

XPESN

XENDINST

XPFCL

TMON

XPRASOL

FMCLK1

FMCLK3
XFMREF1
XFMREF2

TMMODE2

TMCLK
XTMREF1
XTMREF2

XFANEB

XJMSN

XPWON

XBUSY

OPRXD
OPRXD

SMCLK

SMCWB
XSMREF2
XSMREF3

OPCLK

BEEP

XSLEAD

XOPBSYNC

ADO7

ADO5

ADO3

ADO1

XXEON

NPSN

GND

GND

GND

GND
GND
GND
GND

XSP

GND
GND

XCS
GND
GND

XCLK

ADE6

ADE4

GND
GND

ADE2

ADE0

GND
GND
GND
GND
GND
GND

SJSN

GND
GND

SCLK

GND
GND

ADE7

ADE5

GND
GND

ADE3

ADE1

GND
GND

CN309

8
7
6
5
4
3
2
1

CN310

1

GND

2

s

[ 5]Relay Sensor

3

CN362

CN362

5VS

CN303

1

24VADU

2

24VADU

3

t

[ 24]ASOUT

4

t

[ 24]XASOUT

5

t

[ 24]BSOUT

6

t

[ 24]XBSOUT

CN304

1

24VADU

2

24VADU

3

[ 24]ASOUT

t

4

[ 24]XASOUT

CN201

5
6

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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120

t

[ 24]BSOUT

t

[ 24]XBSOUT

t

CN363

CN363

CN103

1
2
3
4
5

5VS

6

5VS

7

5VS

8

5VS

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33

NC

34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55

5VE

56

5VE

57

5VE

58

5VE

59
60
61
62
63
64
65

5VS

66

5VS

67

5VE

68

5VE

69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

SIN

99

100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115

5VE

116

5VE

117

5VE

118

5VE

119
120

FU101

15VLED

123456789

CN302

123456789

CN204

12V

5VS

GND

–12V

24VADU

24VADU

GND

A15

CN301

A1A2A3A4A5A6A7A8A9

CN203

NC

GND

A9A8A7A6A5A4A3A2A1

A11

A14

A13

A12

A10

XTMRST

XTMREF1

XTMREF2

XFMREF1

XFMREF3

TWMODE2

IOB

Signal Table

<>

s
t

[]

ADU RADU

B9B8B7B6B5B4B3B2B1

B11

B15

B14

B13

B12

B10

B1B2B3B4B5B6B7B8B9

A11

A10

A12

XSP

MTON

XJMSN

FMCLK1

FMCLK4

XENOINST

AC Line
DC Line
Puls
Signal Direction
Signal Direction
Active High
Active Low
Voltage

A13

SJSN

A14

XFESN

A15

5VE

SPESN

XEXSN

XRSSN

XSJCL

XPFCL

XPRASOL

TMON

XINTCP

B11

B10

FMCLK3

FMCLK2

B12

XFMREF2

B13

B14

B15

TMEB

TMCLK

XTMREF2

TMMODE1

[ 24]Exposure Lamp

t

t

[ 5]Original Detect LED

–12V
–12V

SOUT

XSSCAN

XSLEAD

XCS

XRDSYNC

SCLK

XOPBSYNC

GND
GND

CLKSBU

GND
GND
GND

XCLK

GND
GND

GND
ADE7
ADO7
ADE6
ADO6

GND

GND
ADE5
ADO5
ADE4
ADO4

GND

GND
ADE3
ADO3
ADE2
ADO2

GND

GND
ADE1
ADO1
ADE0
ADO0

GND

GND

24VSC

GND

GND

[ 5]H.P Sensor

t

5VS

GND

t

[ 5]Start

t

[ 5]Clear Mode

t

[ 5]Power LED

t

[ 5]Busy LED

t

[ 5]Error LED

5VE

24VSC
24VSC

[ 24]ASOU

t

[ 24]XASOU

t

[ 24]BSOU

t

[ 24]XBSOU

t

GND

OPRXD
OPTXD

GND

OPCLK

–12V
BEEP

5VE
5VE

–12V

GND

GND

GND

GND

24VSC

GND

24VADU
24VADU

GND

GND

GND

GND

5VS
5VS
5VE
5VE

XDFOPN

XFNEB

XPWDWN

GND

GND

GND

s

[ 5]Feed-out Sensor

t

[ 5]Document Table Position Sensor

s

[ 5]Document Sensor

s

[ 5]Feed Sensor

s

[ 5]Read Sensor

t

[ 24]Document Table Lift Clutch

[ 24]Pick-up Clutch

t

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CN308

987654321

10

CN401

CN521

CN202

50

1

49

2

48

3

12V
12V
5VS
5VS
5VS
5VS

SIN

47

4

46

5

45

6

44

7

43

8

42

9

41

10

40

11

39

12

38

13

37

14

36

15

35

16

34

17

33

18

32

19

31

20

30

21

29

22

28

23

27

24

26

25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

SBU

25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10

9
8
7
6
5
4
3

GND

2
1

GND

24VADU

XSP

TMCN

MTON

XINTCP

XENDINST

t

[ 24]Endorser Solenoid

EDU

10

GND

XPRASOL

FU401

5VS

FG

CN205

1
2
3
4
5
6

CN208

1
2
3
4
5
6
7
8

CN206

1
2
3
4
5
6

CN207

1
2
3
4
5
6
7
8
9

CN210

1
2
3
4
5
6

12V

7
8
9

10

CN209

8
7
6
5
4
3
2
1

CN211

6
5
4
3
2
1

3
2
1
3
2
1

CN601

8
7
6
5
4
3
2
1

STM1

ADF Interlock
Switch

Lamp Stabilizer

CN252

H.P Sensor

CN251

Scanner Motor

CN4

CN5

CN6

CN7

10

2

1

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8

1
2
3
4
5
6

24VADUO

24VADUO

1

2

CN255

SOP

FAN

CN305

GND

5VS

GND

5VS

GND

5VE

CN306

GND

5VS

GND

5VS

CN307

24VADU

24VADU

GND

CN403

24ADU

CN402

TMDN

RESET

GND

SD

SET

6V

MTON

XENDINST

5VS

GND

Exposure Lamp

2

1

CN8

24VADUO

24VADUO

F31

F32

F35

F33

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6

1

2

3

4

FG

1

2

1
2
3
4
5
6
7
8
9

FG

PSU

S1

CN360

CN360

CN359

CN358

CN357

CN357

CN367

CN356

CN356

CN355

CN354

CN354

CN353

CL2

CL1

SOL1

CN451

CN451

CN1

FG

CN1

F1

CN3

AC-OUT

AC-IN

AC IN

AC IN

Feed-out Sensor

Document Table Position

S2

Sensor

S3

Document Sensor

Feed Sensor

S4

Read Sensor

S5

Document Table Lift Clutch

Pick-up Clutch

Endorser Solenoid

Endorser

1
2

A

B

C

D

E

F

G

H

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