Ricoh A224 Service Manual

A224 COPIER

SERVICE MANUAL

The A224 copier is based on the A193 copier.

Only the differences from the base copier are described in the following pages. Therefore, this document should be treated as an insert version of the base copier’s service manual, although it has a separate binder. It should always be used together with the base copier’s service manual.

IMPORTANT SAFETY NOTICES

PREVENTION OF PHYSICAL INJURY

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

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

3. Note that some components of the copier and the paper tray unit are supplied with electrical voltage even if the main switch is turned off.

4. If any adjustment or operation check has to be made with exterior covers off or open while the main switch is turned on, keep hands away from electrified or mechanically driven components.

5. If the Start key is pressed before the copier completes the warm-up period (the Start key starts blinking red and green alternatively), keep hands away from the mechanical and the electrical components as the copier starts making copies as soon as the warm-up period is completed.

6. The inside and the metal parts of the fusing unit become extremely hot while the copier is operating. Be careful to avoid touching those components with your bare hands.

HEALTH SAFETY CONDITIONS

1. Never operate the copier without the ozone filters installed.

2. Always replace the ozone filters with the specified ones at the specified intervals.

3. Toner and developer are non-toxic, but if you get either of them in your eyes by accident, it may cause temporary eye discomfort. Try to remove with eye drops or flush with water as first aid. If unsuccessful, get medical attention.

OBSERVANCE OF ELECTRICAL SAFETY STANDARDS

1. The copier and its peripherals must be installed and maintained by a customer service representative who has completed the training course on those models.

2. The RAM board on the system control board has a lithium battery which can explode if replaced incorrectly. Replace the battery only with an identical one. The manufacturer recommends replacing the entire RAM board. Do not recharge or burn this battery. Used batteries must be handled in accordance with local regulations.

SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL

1. Do not incinerate toner bottles or used toner. Toner dust may ignite suddenly when exposed to an open flame.

2. Dispose of used toner, developer, and organic photoconductors in accordance with local regulations. (These are non-toxic supplies.)

3. Dispose of replaced parts in accordance with local regulations.

4. When keeping used lithium batteries in order to dispose of them later, do not put more than 100 batteries per sealed box. Storing larger numbers or not sealing them apart may lead to chemical reactions and heat build-up.

LASER SAFETY

The Center for Devices and Radiological Health (CDRH) prohibits the repair of laser-based optical units in the field. The optical housing unit can only be repaired in a factory or at a location with the requisite equipment. The laser subsystem is replaceable in the field by a qualified Customer Engineer. The laser chassis is not repairable in the field. Customer engineers are therefore directed to return all chassis and laser subsystems to the factory or service depot when replacement of the optical subsystem is required.

WARNING

Use of controls, or adjustment, or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.

WARNING FOR LASER UNIT

WARNING: Turn off the main switch before attempting any of the

procedures in the Laser Unit section. Laser beams can seriously damage your eyes.

CAUTION MARKING:

INVISIBLE LASER RADIATION WHEN OPEN.

AVOID DIRECT EXPOSURE TO BEAM.

>PS<

INVISIBLE LASER RADIATION WHEN DISCONNECT OPTICAL FIBER CABLE. AVOID DIRECT EXPOSURE TO BEAM.

>PS<

DANGER

25 April 1997 SPECIFICATIONS

1. SPECIFICATIONS

Items A193 A224

Configuration: Desktop As for A193 Copy Process: Dry electrostatic transfer syst em As for A193 Originals: Sheet/Book As for A193 Original Size: Maximum:

A3/11" x 17" Minimum: A5/8.5" x 5.5" sideways (paper tray) A6/5.5" x 8.5" lengthwise (by-pass feed)

Copy Paper Weight: Paper tray:

60 ~ 90 g/m By-pass: 60 ~ 157 g/m

Reproducti on R at i os: 5 Enlargeme nt a nd 7 R eduction

(5E7R)

Zoom: 25% to 400% in 1% st eps Non-memor y copy:

Power Source: 120V/ 60 Hz: more than 12A

(for North America) 220V ~ 240V/50 Hz: more than 7A (for Europe) 220V ~ 240V/60 Hz: mo re than 7A (for Asia)

Dimensio ns (W x D x H): 550 x 580 x 652 mm

(21.7" x 22.9" x 25.7") Measurem ent conditions

1) With by-pass feed table closed

2) Without all opt i ons Weight: Less than 57 kg (126 lb) Less than 58 kg (128 lb) Warm-up Time:

Less than 30 s (20°C, 68°F): 115V machine Less than 35 s (20°C, 68°F): 230V machine

, 16 ~ 24 lb

Non-memory copy: 5E6R (25% is excluded) Memory copy: Letter: 5E7R Others: 5E6R (25% is excluded; it can be in cluded with an SP mode)

50% to 400% in 1% ste ps Memory copy: Letter: 25% to 400% Others: 50% to 400% in 1% steps (down to 25% can be included with an SP mode)

Less than 40 s (20°C, 68°F): 115V/230V machine

As for A193

A224

Copier

SPECIFICATIONS 25 April 1997

Items A193 A224

First Copy Time Less than 9.8 s

(from 1st paper tr ay to face-down co py t ra y) Less than 8.8 s (from 1st paper tr ay to face-up copy tray)

Less than 9.8 s (from 1st paper tr ay t o face-down cop y tray) Less than 8.8 s (from 1st paper tr ay t o f ace-up copy tray) Less than 9.5 s (from LCT to face-down copy tray)

Copy Number Input: Ten-key pad, 1 to 99 (count up

or count down )

As for A193

Manual Image Density: 7 steps As for A193 Automatic Reset: 60s is the standard setting; it

can be changed with a UP

As for A193

mode.

Auto Shut Off 15 min. is the standard setting;

it can be changed with a UP mode.

30 min. is the standard setting; it can be changed with a UP mode.

Copy Paper Capacity: Paper Tray: 250 sheets

Option Paper Tray Unit: 500 sheets x 2 By-pass:

As for A193 100 sheets (≤A4, LT ) 10 sheets (>A4, LT ) 1 sheet (non-standard)

Toner Repl eni shment: Cartridge e xchange

(216 g/cartridge)

As for A193

Toner Yield : 8 k copies (A4 si dew ays, 6% full

black, 1 to 1 copying, ADS

As for A193 mode)

Optional Equ i pm ent: -Platen cove r

-ADF

-ARDF

-Paper tray un i t

-1-bin sorter

-Finisher

-4 MB memory

-8 MB memory

-Key counter

-Tray heater

-Optical anti-condensation heater

Copy Tray Capacity face-down mode: 500 sheets

face-up mod e: 1 00 sheets

-Platen cover

-ADF

-ARDF

-Paper tray unit

-1-bin sorter

-Finisher

-LCT

-Key counter

-Tray heater

-Optical anti- condensation heater

-Drum heater As for A193

25 April 1997 SPECIFICATIONS

Power Consumption:

- A193 -

Mainframe Onl y Full System

120 V 220 V ~ 240 V 120 V 220 V ~ 240 V Maximum Less than 1.1 kW Less than 850 W Less than 1.2 kW Less than 1 kW Copying Approx. 470 W Approx. 500 W Approx. 500 W Approx. 530 W Warm-up Approx. 1.0 kW Approx. 750 W Approx. 1.0 kW Approx. 750 W Stand-by Approx. 130 W Approx. 130 W Approx. 140 W Approx. 140 W Auto Shut-off Approx. 2.0 W Approx. 2.2 W Approx. 2.2 W Approx. 2.4 W

- A224 -

Mainframe Onl y Full System

120 V 220 V ~ 240 V 120 V 220 V ~ 240 V Maximum Less than 1.1 kW Less than 850 W Less than 1.2 kW Less than 1 kW Copying Approx. 570 W Approx. 570 W Approx. 600 W Approx. 600 W Warm-up Approx. 1.0 kW Approx. 750 W Approx. 1.0 kW Approx. 750 W Stand-by Approx. 130 W Approx. 130 W Approx. 140 W Approx. 140 W Auto Shut-off Approx. 2.0 W Less than 2.0 W Approx. 2.2 W Approx. 2.4 W

A224

Copier

Noise Emission:

- A193 -

Mainframe Onl y Full System

1. Sound Power Level

Copying 61.5 dB (A) 64.5 dB (A)

Stand-by 30.0 dB (A) 30.0 dB (A)

2. Sound Pressure Level at the Operation Position

Copying 47.5 dB (A) 52.0 dB (A)

Stand-by 17.5 dB (A) 17.5 dB (A)

- A224 -

Mainframe Onl y Full System

1. Sound Power Level

Copying 62.5 dB (A) 66.0 dB (A)

Stand-by 40.0 dB (A) 40.0 dB (A)

2. Sound Pressure Level at the Operation Position

Copying 47.5 dB (A) 52.0 dB (A)

Stand-by 17.5 dB (A) 17.5 dB (A)

SPECIFICATIONS 25 April 1997

Copying Speed in Multicopy Mode:

- A193 -

A4 sidew ays/

11" x 8.5"

Non-memory copy mode 15 9 10 Memory cop y mode 20 11 12

A3/11" x 17" B4/8.5" x 14"

- A224 -

A4 sidew ays/

11" x 8.5"

Non-memory copy mode 20 11 13 Memory cop y mode 25 13 15

A3/11" x 17" B4/8.5" x 14"

Memory Capacity:

- A193 -

Standard (4 MB) Optional 4 MB Optional 8 MB

Multi-page duplex copy x O O Sort, Rotate Sort A4, LT O O O

B4, LG x O O A3, DLT x O O

Number of pages A4, 6% 35 99 99

ITU-T #4 15 45 75

x: Not available O: Available

- A224 -

Standard 12 MB (4 MB + 8 MB)

Multi-page duplex copy O Sort, Rotate Sort A4, LT O

B4, LG O A3, DLT O

Number of pages A4, 6% 99

ITU-T #4 75

x: Not available O: Available

25 April 1997 MACHINE CONFIGURATION

2. MACHINE CONFIGURATION

A224V501.wmf

Version Item

Copy Copier A193 A224 D

ADF (Option) A628 B ARDF (Option) A661 C Platen Cover (Option) A645 Paper Tray Unit (Option) G697 F Duplex Unit G694 (Option) Standard 1-bin Sorter (Option) A629 H Finisher (Option) A666 G LCT N/A A667(Option) E Memory 4 MB A642-01 (Option) N/A Memory 8 MB A642-02 (Option) Standard

Fax Fax Controller (Option) A693 A804

Telephon e (Option) H160 A ISDN (Option) A644 HDD (Option) A641 Memory Card (Option) H130-54 Function Card (Option) H130-52 Page Memory (Option) A640

Printer Printer Control ler (Option) A643-00 (115V)

A643-01 (230V) PS (Option) A643-02 HDD (Option) A643-03

Machine Code

A193 A224

A805-00 (115V) A805-01 (230V)

No.

A224

Copier

ELECTRICAL COMPONENT DESCRIPTIONS 25 April 1997

3. ELECTRICAL COMPONENT DESCRIPTIONS

Refer to the electrical component layout and the point-to-point diagram on the waterproof paper in the pocket for the locations of these components.

Symbol

Printed Circuit Boards

PCB1 54

PCB2 50 Lamp Stabilizer Provides dc power for the exposure lamp. PCB3 58 PCB4 61 LD Unit Controls the laser diode. PCB5 63

PCB6 51 PCB7 5 5 IOCSS Controls the mechanical par t s of the p rinter. PCB8 52

PCB9 53

PCB10 62

Motors

M1 45 Main Drives the main body com ponents. M2 37

M3 47 M4 49 Po l ygonal Mirror Tur ns t he polygonal mir ror. M5 38 M6 35 Ex haust Fan Removes heat from aro und the fusing unit. M7 46

Index

No.

Description Note

High Voltage Supply Board

PSU Provides dc powe r to th e system and ac

Operation Pan e l Controls th e to uch panel displa y and LED

SBU Contains the CCD, and outputs a video

BICU Controls all copi er functions both di r ect l y or

MSU Compr esses the image data, st ores the data,

Polygon Motor Driver (A224 only)

Scanner Drive Drives the 1st and 2nd scanners (d c st epper

Transport Vac uum Fan

Toner Supply Rotates the toner bottle to supply toner to

Fusing Unit Fan (A224 only)

Supplies high voltage to the drum charge roller, devel opment roller , tra n sf er roller, and discharge br ush.

power to the fusing lamp.

matrix, and monitors the key matrix.

signal to the BICU b oar d.

through othe r co ntrol boards.

and applies the image editing. Drives the polygon motor.

motor). Aids paper transportation from the transfer

roller to the fusing u n it.

the toner supply unit.

Removes heat from around the fusing unit.

Sensors

S1 33 Upper Exit Detects misf eeds. S2 31 Lower Exi t Detects misf eeds. S3 28 Left Vertical D oor Cuts the +5 and +24 Vdc power lin es.

S4 27

S5 17

Left Door Detects whether the left door is open or

closed.

Relay Detects the leading edge of paper fr om the

paper tray and d upl ex unit to determ ine the stop timing of the paper feed clutch and duplex feed motor. Also detects misfeeds.

25 April 1997 ELECTRICAL COMPONENT DESCRIPTIONS

Symbol

S6 10 PCU Detects when a new PCU is installed. S7 29 Fusin g Exi t Detects misf eeds.

S8 9

S9 —-

S10 15

S11 16

S12 13

S13 12 S14 59 Humidity Monitors the humidity around the PCU. S15 4

S16 5

S17 6

S18 3

S19 1

S20 23

Index

No.

Description Note

Charge Roller H.P Informs the CPU w hen the drum charge

roller is at home position.

Upper Tray Paper End (A193 only)

Lower Tray Paper End

By-pass Feed Paper End

Registrati on Detects the leading edge of the copy pap er

By-pass Feed Paper Width

Original Width Detects the width of the original. This is one

Original Length-1 D etects the leng th of the original. This i s one

Original Length-2 D etects the leng th of the original. This i s one

Platen Cover Infor m s t he C P U w het her the platen cover is

Scanner H.P. Informs t he C P U w hen the 1st and 2nd

Toner Densi t y (TD) D etects the amou nt of toner inside the

Informs the CPU w hen the upper paper tr ay runs out of pape r.

Informs the CPU when the lower paper tray runs out of pape r.

Informs the CPU w hen there is no paper in the by-pass tray.

to determin e th e stop timing of the pap er feed clutch, and detects misfe eds.

Detects the wi dt h of the paper in the by-pass feed table.

of the APS (Auto Paper Select) sen sors.

up or down (related to APS/ARE functions). ARE: Auto Reduce and Enlarge

scanners are at th e hom e position.

development unit .

A224

Copier

Switches

SW1 20 AC Supplies power to the copier. SW2 32 Main Supplies power to operate the machine. SW3 14 Right Vertical Guide Cuts the +5 and +24 Vdc power lines.

SW4 —-

SW5 19

SW6 26

Magnetic Clutches

MC1 36 MC2 42 Up per R el ay Drives the upper relay rol l er s.

MC3 43 Lower Relay Drives the lower relay rollers.

Upper Paper Size (A193 only)

Lower Paper Size Determines what size of paper is in the lower

Front Door Safety Cuts the +5VLD and +24V dc power lines

Charge Roller Contact Controls the touch and release movem ent of

Determines what size of paper is in the upper paper tray.

paper tray.

and detects whet her the front cove r is open or not.

the drum ch arge roller.

ELECTRICAL COMPONENT DESCRIPTIONS 25 April 1997

Symbol

MC4 41

MC5 —MC6 44 Low er Paper Feed Starts paper feed fr om t he l ow er paper tray.

MC7 40 Registration Drives the registration rollers. MC8 39

Solenoids

SOL1 48

Lamps

L1 60 L2 2 Scanner Applies lig ht to the original for exposure.

L3 8 Fusing Provides heat to the hot roller.

Heaters

H1 18

H2 34

H3 11

Index

No.

Description Note

By-pass Feed Starts paper feed from the by-pass fee d

table.

Upper Paper Feed (A193 only)

Development Drives the dev el opment roller .

Junction Gate Moves the junction gate to direct copies to

Quenching Neutral i zes any charge remai ning on the

Tray (option) Tur ns on when the main sw itch is off to keep

Anti-condensation (option)

Drum (option ) Keeps the drum warm to prevent

Starts paper fee d fr om t he upper paper tray.

the face-up or fa ce-down copy tray .

drum surfa ce af t er cl eaning.

paper in the pa per tray dry. Tray heaters are also available for the optional paper feed unit.

Turns on when t he main switch is of f to prevent moisture from accumulating.

condensati on on the drum.

Thermistors

TH1 24 TH2 21 Fusing Monitors the temperature of the hot roller. TH3 22

Thermofuses

TF1 7

Counters

CO1 25

CO2 —-

Charge Roller Monitors the temperature of the drum charge

roller.

Fusing Edge (A224 only)

Fusing Provides back-u p overheat protecti on in the

Total Keeps tr ack of the total number of copies

Key (option)

Monitors th e te mperature for the fr ont edge of the hot roller .

fusing unit.

made. Used for contro l of authorized use . Th e

copier will not operate until it is installed.

25 April 1997 DRIVE LAYOUT

Symbol

Others

LSD1 30

NF 56

CB 57

DRIVE LAYOUT

Index

No.

Description Note

Laser Synchronization Detector

Noise Filter (230V machine only)

Circuit Breaker (230V machine only)

Detects the laser beam at the sta rt of the main scan.

Removes electrical noise from the AC input line.

Guards against voltage surg es i n t he AC input line.

A224

Copier

1. Scanner Drive Motor

2. Development Clutch

3. Charge Roller Contact

4. Main Motor

5. Registration Clutch

6. Lower Paper Feed Clutch

7. Lower Relay Clutch

8. Upper Relay Clutch

9. By-pass Feed Clutch

A224V502.wmf

COPY PROCESS 25 April 1997

5. COPY PROCESS

5.1 OVERVIEW

Pow er Pack

- 90 V

-1750 V

+ 15 µA

- 140 V

A224V503.wmf

- 600V

Pow er Pack

- 1.8 kV (Front Side)

- 2.1 kV (Rear Side)

The separation (discharge brush) voltage has been changed.

A224V500.wmf

25 April 1997 MAIN SCAN MAGNIFICATION/REDUCTION

6. MAIN SCAN MAGNIFICATION/REDUCTION

The specification of the reproduction ratios in the memory mode (binary picture processing mode) has been changed to 5 enlargement and 6 reduction. This is because the higher copy speed of this model causes poor copy quality at a reproduction ration of 25%.

Reproduction ratios of 48% ~ 400% are achieved for main and sub scan magnifications in the same way as for the A193 copier, and for reproduction ratios of 25% ~ 47%, it is done by changing the scanner speed and deleting every other line.

A224

Copier

LASER EXPOSURE 25 April 1997

7. LASER EXPOSURE

7.1 OVERVIEW

The strength of the beam is 0.6 mW on the drum surface (10 mW output from the LDDR board) at a wavelength of 780 nm.

The polygon motor speeds have been changed as follows:

Resolution (dpi ) Modes Motor Speed (rpm) Data Freq uency (MHz)

400 dpi Copy and Fax 17952.8 11.750 600 dpi Printer 26926.1 26.438

391.16 dpi Fax (image rotation) 18240.0 11.674

406.4 dpi Fax (mm printing ) 17556.0 11.674

The polygon mirror motor and motor driver are separated to prevent the laser unit from being heated by the motor driver. Also, the laser unit has a polygon motor cover and shield glass to reduce the noise from the polygon motor.

7.2 OPTICAL PATH

[I]

[B]

[C]

[D]

[B]

[I]

The shield glass has been added.

[A]: LD Unit

[F]

[D]

[F]: 1st Mirror

[G]

[E]

[H]

[A]

[E]

[H]

A224D501.wmf

[B]: Polygon Mirror [C]: Cylindrical Lens [D]: Shield Glass [E]: F - Theta Mirror

[G]: BTL [H]: 2nd Mirror [I]: Laser Syncronization Detector

25 April 1997 PAPER FEED

8. PAPER FEED

8.1 OVERVIEW

A224

Copier

A224D503.wmf

This machine has a duplex unit as a standard component, so the following parts have been deleted.

1. Upper Paper Feed Rollers

3. Upper Paper End Sensor and Feeler

2. Upper Paper Feed Clutch

4. Upper Paper Size Sensor

PAPER SEPARATION AND TRANSPORT 25 April 1997

8.2 DRIVE MECHANISM

[B]

[A]

A224D502.wmf

Drive transfers to the upper relay clutch [A] through the gear [B] instead of the paper feed clutch.

9. PAPER SEPARATION AND TRANSPORT

The voltage for the discharge brush has been changed.

-1.8 kV (feeding from a paper tray)

•

-2.1 kV (second side of duplex copies, feeding from the duplex unit)

•

25 April 1997 IMAGE FUSING

10. IMAGE FUSING

10.1 OVERVIEW

A224

Copier

3, 4

A224D506.wmf

Two new parts; fusing edge thermistor and antistatic brush have been added. The fusing edge thermistor is for over heat prevention at the end of the hot roller. The antistatic brush is for prevention of off-set fusing image.

1. Fusing thermofuse

2. Hot roller

3. Fusing thermistor

4. Fusing edge thermistor

5. Lower entrance guide

6. Pressure roller

7. Pressure lever

8. Antistatic brush

9. Cleaning roller

10. Pressure spring

11. Hot roller strippers

12. Fusing lamp

IMAGE FUSING 25 April 1997

10.2 PRESSURE ROLLER

[A]

[C]

[D]

[B]

[D]

[B]

A224D207.wmf

The pressure of the pressure roller can be changed in the same way as for the A193 machine. It is done by adjusting the position of the pressure springs [A]. In this machine, the fusing pressure can also be adjusted with the lever handle [B] (this is a finer adjustment than the pressure springs). The user can do this when printing on a thicker medium, such as an envelope.

The lever shaft [C] contacts the pressure lever [D]. When the lever handle rotates down, the shaft lowers the pressure lever. At this time, the pressure of the pressure roller is decreased. The upper position of the lever is normal.

25 April 1997 IMAGE FUSING

10.3 FUSING UNIT FAN

[A]

A224

Copier

A224D505.wmf

The fusing unit fan [A] has been added below the fusing unit. The fusing unit fan is necessary because the wattage of the fusing lamp is higher than in the A193 machine, as a result of the higher copy speed.

The fusing unit fan turns on if the charge roller thermistor detects a temperature in the machine of over 43°C when the main motor starts to rotate or at any time that the main motor is rotating.

The fusing unit fan stops either when the main motor stops or when the temperature in the machine falls below 40°C.

IMAGE FUSING 25 April 1997

10.4 FUSING TEMPERATURE CONTROL AND OVERHEAT PROTECTION

[B]

[A]

A224D504.wmf

The fusing control type can be either phase control or on-off control, depending on an SP mode setting.

The fusing edge thermistor [A] has been added. It measures the temperature at the end of the hot roller. This is because this machine has a higher copy speed and more power is supplied to the fusing lamp. So, when making a multi-copy run with A4 size paper, the temperature at the ends of the hot roller is higher than at the middle.

Usually, the fusing temperature is controlled using the fusing thermistor [B] (at the middle). However, if the temperature at the end of the hot roller becomes greater than 230° C, the fusing lamp turns off until the temperature at the middle of the hot roller has fallen by 5°C.

25 April 1997 ENERGY SAVER MODES

11. ENERGY SAVER MODES

Basically, the function and performance of the energy saver mode in all machine configurations, except the copier configuration for the 230V machine, are the same as for the A193 machine. The following are the items which have been changed.

1. Fusing temperature in the energy saver level 2

80°C (230V machine)

2. The recovery time from energy saver level 2

30 s (230V machine)

3. When the auto shut-off timer runs out in the copier configuration (230V

machine only) When the auto shut-off timer runs out, the machine enters auto shut off mode and the

ac switch

turns off automatically. This function can be disabled with SP 5-948. If this function is disabled, the main switch turns off when the timer runs out.

NOTE:

This function is necessary to meet new BAM regulations in Germany (enforced from January, 1999). The new BAM regulation requires low power consumption in the auto-shut off mode (less than 2 W).

A224

Copier

4. Power consumption in the copier configuration

Mode AC Switch

Energy Saver Level 1

Energy Saver Level 2

Auto Shut-off Mode (SP5-948 enabled)

Off (230V ) On (115V )

Main

Switch

On On On

On (230V ) Off (115V )

Energy

Saver LED

Off Off Off

Fusing

Lamp

165°C

140°C

(115 V)

80°C

(230 V)

System

+5V

Note

The machine returns to standby mode if the DF is lifted or an original is placed in the ADF or ARDF.

The machine returns to standby mode only if either the main switch or ac switch is turned on.

SERVICE PROGRAM MODE TABLE 9 May 1997

12. SERVICE PROGRAM MODE TABLE

12.1 MAIN SP MODE TABLE

NOTE:

Class

1 and 2

1-001 *

1-002 *

1) A “#” mark after the mode number means that this SP mode is only used for the A193 machine.

2) A “##” mark after the mode number means that this SP mode is only used for the A224 machine.

3) In the Function column, comments are in italics.

4) In the Settings column, the default value is in bold letters.

5) An asterisk ( * ) after the mode number means that this mode is stored in the NVRAM. If the RAM is reset, all these SP modes will return to their factory settings.

Mode No.

Class 3

1 #

Leading Edge Registrati on (Normal copying, and duplex 1st side)

Leading Edge Registrati on (Duplex: 2nd side)

Side-to-Side Registrati on (1st paper feed)

Side-to-Side Registrati on (2nd paper feed)

Adjusts the prin ting leading edge registration us i ng t he Trimming Area Pattern (SP5- 902, No.10).

Use the The specificat i on i s 3 ±2 mm. See “Replacement and Adjustment - C opy Image Adjustm ent s” for details.

Adjusts the prin ting leading edge registration us i ng t he Trimming Area Pattern (SP5- 902, No.10).

Use the The specificat i on i s 3 ±2 mm. See “Replacement and Adjustment - C opy Image Adjustm ent s” for details.

Adjusts the printing side-to-side registration from the 1st paper feed station using the Trimming Area Pattern (SP5-902, No.10).

Use the The specification is “Replacement and Adjustment - C opy Image Adjustm ent s” for details.

Adjusts the printing side-to-side registration from the 2nd paper fe ed station using the Trimming Area Pattern (SP5-902, No.10).

Use the The specificat i on i s 2

•/∗

Function Settings

key to toggle between + and -.

1.5 mm. See

key to toggle between + and -.

1.5 mm

+9 ~ -9

0.1 mm/s t ep

+ 0.0 mm

+12.5 ~ -12.5

0.1 mm/s t ep

+ 0.0 mm

+9 ~ -9

0.1 mm/s t ep + 0.0 mm

+9 ~ -9 1 mm/step

+ 0.0 mm

9 May 1997 SERVICE PROGRAM MODE TABLE

Mode No.

Class

1 and 2

1-002 *

Class 3

Side-to-Side Registration (3rd paper feed: Option PFU tray 1)

Side-to-Side Registrati on (4th paper feed: Option PFU tray 2)

Side-to-Side Registrati on (By-pass feed )

Adjusts the printing side-to-side registration from the 3rd pape r feed station using the Trimming Area Pattern (SP5-902, No.10).

Use the

•/∗

The specificat i on i s 2 ±1.5 mm

Adjusts the printing side-to-side registration from the 4th paper f eed station using the Trimming Area Pattern (SP5-902, No.10).

Use the

•/∗

The specificat i on i s 2 ±1.5 mm

Adjusts the printing side-to-side registration from the by-pass fe ed t abl e using the Trimm i ng Ar ea Pat t er n (SP5-902, No.10).

Use the

•/∗

Function Settings

+9 ~ -9 1 mm/step + 0.0 mm

key to toggle between + and -.

+9 ~ -9

0.1 mm/s t ep + 0.0 mm

key to toggle between + and -.

+9 ~ -9

0.1 mm/s t ep + 0.0 mm

key to toggle between + and -.

The specificat i on i s 2 ±1.5 mm.

1-003 *

1-006 *

7 ##

3 ##

Side-to-Side Registrati on (Duplex)

Side-to-Side Registrati on (LCT)

Paper Feed Timing (Paper Feed Trays)

Paper Feed Timing (By-pass)

Paper Feed Timing (LCT)

Double copy registration

Adjusts the printing side-to-side registration from the duplex tray using the Trimming Area Patt er n (SP5 -902, No.10).

Use the The specificat i on i s 2

Adjusts the printing side-to-side registration from the LCT using the Trimming Area Patt er n (SP5 -902, No.10).

Use the The specificat i on i s 2 ±1.5 mm

Adjusts the relay clutch timing (or transport motor timing when us ing the LCT) at registration. The relay clutch timing (trans por t motor timing) deter mines the amount of paper buckle at registration. (A l arger setting le ads to more buckling.)

Adjusts the position of the second copy from the center line in double copy m ode.

Use the

•/∗

key to toggle between + and -.

1.5 mm

•/∗

key to toggle between + and -.

•/∗

key to toggle between + and -.

+9 ~ -9

0.1 mm/s t ep

+ 0.0 mm

+9 ~ -9

0.1 mm/s t ep

+ 0.0 mm

0 ~ 10 1 mm/step

7 mm

0 ~ 10 1 mm/step

8 mm

0 ~ 10 1 mm/step

7 mm

+9 ~ -9 1 mm/step

+ 0 mm

See “Replacement and Adjustment Copy Image Adjus tm ents” for details .

Displays the pa per w i dt h sensor data for the by-pass feed table.

1-007 *

By-pass Feed Paper Size Display

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SERVICE PROGRAM MODE TABLE 9 May 1997

Mode No.

Class

1 and 2

1-104 *

1-105 *

1-106

1-901

1-902

Class 3

Fusing Temperature Control

Fusing Temperature Adjustment (Operation)

Fusing Temperature Adjustment (Energy Save r Level 2)

Fusing Temperature Display

Auto Restart Interval

Fusing Control Frequency Display

Selects the fusing temperature control mode.

Adjusts the fusing temperature in the operation mode.

Adjusts the fusing temperature in the energy saver le vel 2 m ode.

With a lower val ue, the machine take s more time to reach the ready condi tion.

Displays the fusing temperature.

Press the  key to exit the display.

Do not change the value.

Displays the fusing control frequency which is detected by the zero cross si gnal generator.

Around “50" equals 50 Hz. Around ”60"

Function Settings

0: On/Off

1: Phase

100 ~ 200

1°C/step

180°C

0 ~ 165

1°C/step

140°C (115V machine) 0°C (A193 - 230V machine) 80°C (A224 - 230V machine)

equals 60 Hz.

Envelope Feeding

1-903 *

Adjusts the by-pass feed clutch on ti m e when the paper is f ed by the registration roller.

The by-pass feed cl utch turns on agai n

0 ~ 10 1 mm/step

3 mm

after paper buckl i ng to help the registration r ol l er to feed thick paper.

2-001 *

2-101 *

Charge Roller Bias Adjustment

Leading Edge Erase Margin

(Printing)

Trailing Edge Erase Margin

(Printing)

Adjusts the voltage applied to the charge roller.

Do not change the value.

Adjusts the leading edge erase ma rgin. 0 ~ 9

The specificat i on i s 3 ±2 mm. See “Replacement and Adjustment - C opy Image Adjustm ent s” for details.

Adjusts the trailing edge erase margin. 0 ~ 9

The specificat i on i s 2 ±2 mm. See “Replacement and Adjustment - C opy

-1000 ~ -2500 1 V/step

- 1750 V

1 mm/step

3.0 mm

1 mm/step

2.0 mm

Image Adjustm ent s” for details.

9 May 1997 SERVICE PROGRAM MODE TABLE

Mode No.

Class

1 and 2

2-101 *

2-103 *

2-106*

2-201 *

Class 3

Left Side Edge Erase Margin (Printing)

Right Side Edge Erase Margin (Printing)

LD Power Adjustment

ID Adjustment for a Test Pattern

Development Bias Adjustment

Adjusts the left si de erase margin. 0 ~ 9

The specificat i on i s 2 ±1.5 mm. See “Replacement and Adjustment - C opy Image Adjustm ent s” for details.

Adjusts the right side erase margin. 0 ~ 9

The specificat i on i s 2 ±1.5 mm. See “Replacement and Adjustment - C opy Image Adjustm ent s” for details.

Adjusts the LD power. -128 ~ +127

Do not change the value.

Adjusts the image density level for black pixels on test patt er n pr i nt out s (made with SP5-902).

Adjusts the development bias during copying.

This can be adjusted as a tempora ry

Function Settings

1 mm/step

2.0 mm

1 mm/step

2.0 mm

1 µW/step

- 103

0 ~ 255 1/step

255

-500 ~ -700 1 V/step

- 600 V

measure if faint copies appear due to a n aging drum.

0: 50 copies

1: 20 copies

0: -2

µΑ

1: 0 µA

2: +2 µA 3: +4 µA

2-213*

2-220 *

Number of Copies After Toner Near End Detection

VT Display Displays the TD se nsor output voltage .

Selects the number of copies after toner near-end has been detected.

Press the  key to exit the display.

Transfer Current

Adjustment (Paper Tray)

Adjusts the current applied to the transfer roller during pr i nt i ng from the paper tr ay.

If the user uses thicker paper, the current may have to be inc re ased to ensure sufficient transfer of toner.

Adjusts the current applied to the transfer roller during pr i nt i ng from the by-pass feed table.

If the user uses thicker paper, the current may have to be inc re ased to ensure

0: -2

µΑ

1: 0 µA

2: +2 µA 3: +4 µA

2-301 *

Transfer Current Adjustment (By-pass Feed Table)

sufficient transfer of toner.

Transfer Current Adjustment (Duplex)

Adjusts the current applied to the transfer roller during pr i nt i ng from the duplex t ray.

If the user uses thicker paper, the current may have to be inc re ased to ensure

0: -2

µΑ

1: 0 µA

2: +2 µA 3: +4 µA

sufficient transfer of toner.

Transfer Current Adjustment (Cleaning)

Adjusts the current applied to the transfer roller during r ol l er cleaning.

If toner remai n s on the roller after cleaning, inc rease the current .

-10 ~ 0 1 µA/step

- 4 µA

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