Ricoh FT4220 Guida all'installazione

FT4220/4222/4215

SERVICE TRAINING 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. 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 filter installed.

2. Always replace the ozone filter with the specified one at the specified

interval.

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 peripheral must be installed and maintained by a

customer service representative who has completed the training course

on those models.

-- CAUTION --

2. The RAM pack has a lithium battery which can explode if handled

incorrectly, replace only with same RAM pack. Do not recharge, or burn

this battery. Used RAM pack must be handled in accordance with local

regulations.

SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL

1. Do not incinerate the toner cartridge or the used toner. Toner dust may

ignite suddenly when exposed to open flame.

2. Dispose of used toner, developer, and organic photoconductors

according to local regulations. (These are non-toxic supplies.)

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

MAJOR DIFFERENCES BETWEEN THE FT4220/4222 AND FT4418/4421 SERIES

The FT4220/4222 were developed based on the FT4418/4421.

The following table shows the major differences between the FT4220/4222 and the

FT4418/4421 series.

No. Section/Item FT4220/4222

(A110 and A111) FT4418/4421

(A048 and A054)

Major Features

1Copy Speed FT4220:

20 copies/minute

(A4/11" x 81/2" sideways)

10 copies/minute (A3/11" x 17")

FT4418

18 copies/minute

(A4/11" x 81/2" sideways)

10 copies/minute (A3/11" x 17")

FT4222

22 copies/minute

(A4/11" x 81/2" sideways)

11 copies/minute (A3/11" x 17")

FT4421

20 or 21 copies/minute

(A4/11" x 81/2" sideways)

11 copies/minute (A3/11" x 17")

2Energy Saver

Function The energy saver function

reduces power consumption by

decreasing the fusing

temperature when the copier is

not in use.

The energy saving ratio can be

changed by SP mode.

The automatic energy saver

mode is selected by SP mode.

----

3User Program

Mode FT4220 Yes

FT4222 Yes FT4418 No

FT4421 Yes

4Edge Erase,

Center Erase,

Edge/Center

Erase

The edge erase, center erase

and edge/center erase modes

are added as preset user

program modes.

The erase margin can be

changed by SP mode.

----

Copier Installation

1Shipping

Retainers The following shipping retainers

are removed to reduce the

installation time:

•Optics Lock Pins

•Scanner Lock Plate and Plugs

•Drum Protective Sheet

----

2Toner Supply

Unit Initial

Setting (SP63)

The toner supply unit initial

setting (SP63) is not required.

For the color development unit

installation, SP63 must be

performed as for the FT4418

series.

SP63 must be performed to

prevent toner end from being

falsely detected because the

toner supply unit is empty.

No. Section/Item FT4220/4222

(A110 and A111) FT4418/4421

(A048 and A054)

Peripheral

1Duplex Unit The duplex unit is unique to the

Pigeon series.

The differences from the FT4418

series duplex unit are as follows:

The duplex unit for the Pigeon

series cannot be installed on the

FT4418 series.

1) A projection is added to

actuate all the paper size

switches.

2) Duplex front cover

3) Duplex main board

(Communication signal between

the duplex and copier main

boards is different from the

FT4418 series.)

4) A ground wire is added to the

duplex frame in order to absorb

electrical noise.

The duplex unit for the FT4418

series cannot be installed on the

Pigeon series.

2Optional DC

Power Supply

Unit

FT4220 only

The optional dc power supply

unit (Model Code: A525) is

unique to the FT4220. The

optional dc power supply unit

consists of the following parts:

•DC power supply board

•Transformer

•DF interface harness

The optional dc power supply

unit is required when the DF

and/or duplex unit is installed on

the FT4220.

FT4418 only

The optional dc power unit

(Model Code: A494) consists of

the following parts:

•DC power supply board

•Transformer

•Interface board

•DF/Sorter/Duplex interface

harness

The optional dc power supply

unit is required when the DF,

duplex, and/or sorter is installed

on the FT4418.

Peripheral Installation

No. Section/Item FT4220/4222

(A110 and A111) FT4418/4421

(A048 and A054)

1Sorter

Installation The optional dc power supply

unit (A525) is not required.

The interface harness is an

accessory of the sorter.

FT4418:

The optional dc power supply

unit (A494) is required.

The sorter interface harness is

an accessory of the optional dc

power supply unit.

FT4421:

The optional dc power supply

unit and the sorter interface

harness are installed on the

machine at the factory.

2DF Installation FT4220:

The optional dc power supply

unit (A525) is required.

The DF interface harness is an

accessory of the optional dc

power supply unit.

FT4418:

The optional dc power supply

unit (A494) is required.

The DF interface harness is an

accessory of the optional dc

power supply unit.

FT4222:

The optional dc power supply

unit is not required.

The DF interface harness is not

required either.

FT4421:

The optional dc power supply

unit and the DF interface

harness are installed on the

machine at the factory.

3Duplex

Installation FT4220:

The optional dc power supply

unit (A525) is required.

The duplex harness is an

accessory of the duplex unit.

FT4418:

The optional dc power supply

unit (A494) is required.

The duplex interface harness is

an accessory of the optional dc

power supply unit.

FT4222:

The optional dc power supply

unit is not required.

The duplex interface harness is

an accessory of the duplex unit.

FT4421:

The optional dc power supply

unit and the duplex interface

harness are installed on the

machine at the factory.

Drum

1Drum The drum is common with that of

the FT5733 and FT4727 series.

The expected yield is increased

to 80K copies.

The expected yield is 60K copies.

Drum Charge

No. Section/Item FT4220/4222

(A110 and A111) FT4418/4421

(A048 and A054)

1Vp Correction The interval of the grid voltage

increment is changed as the

drum changes.

Drum Counter Vp Correction

Factor

0 to 1,999 copies ±0 volt

Over 2,000 copies --20 volts

Drum Counter Vp Correction

Factor

0 to 999 copies ±0 volt

1,000 to 1,999 copies --20 volts

Over 2,000 copies --40 volts

Optics

11st Scanner The configuration of the main

and sub reflectors is changed.

The proportion of the light

reflected from the main and sub

reflectors is almost 50% each.

Under this condition, both the

lead and trail edges of the

pasted parts of an original will

not make shadows. This

mechanism is the same as for

the FT4727 series.

The light intensity reflected from

the main reflector is stronger

than that reflected from the sub

reflector (about 65% to 35%).

2Dirty

Background

Copy

To prevent the dirty backgrounds

on copies caused by dust

accumulated on optics parts, the

following items are modified.

----

1) The toner shield glass is

removed and a green color filter

is installed on the lens unit.

2) VLcorrection is added. The

exposure voltage increases at

set intervals of the machine on

time.

3Drum Wear

Correction The interval of the exposure

lamp voltage increment is

changed because the drum is a

new type.Same as FT5733/4727.

FT5733 drum cannot be used in

FT4418 due to diffrences in

drum wear correction.

Drum rotation Change of

time exposure lamp

data

0 to 24h ±0

25 to 49h +1

50 to 74h +2

75 to 99h +3

More than 99h +4

Drum rotation Change of

time exposure lamp

data

0 to 9h ±0

10 to 19h +1

20 to 29h +2

More than 80h +8

No. Section/Item FT4220/4222

(A110 and A111) FT4418/4421

(A048 and A054)

4Green Filter A green filter has been added

before the lens, to enable red

originals to be copied with

greater contrast.

----

5Scanner Motor

Drive Circuit The scanner motor drive circuit

is located on the ac drive board.

The main board sends the

control signal to the scanner

motor drive circuit to regulate the

scanner motor speed.

The main board directly controls

the scanner motor.

Development

1Bias Voltage in

ADS mode The number of base bias voltage

levels corresponding to the ADS

output voltage is increased (6

levels).

This change will minimize the

possibility of dirty background

copies with the various originals.

This change also helps to

prevent dirty background copies

caused by dust accumulated on

the exposure glass, 1st, 2nd,

and 3rd mirrors.

4 levels

2Development

Unit Set Sensor No Yes

Toner Density Detection And Toner Supply

1Black Toner

End Detection The ID sensor is used for black

toner end detection.

The black development unit for

the Pigeon series cannot be

used for the FT4418 series.

The toner end detection for the

color toner is the same as that of

the FT4418 series.

The toner end sensor is used for

both black and color toner end

detection. The ID sensor is used

as a back-up system

2Black Toner

End Recovery If the front cover is opened and

closed, or the main switch is

turned off and on in the near end

and toner end conditions, no

copy can be made.

For the color toner, only one

copy can be made (same as for

the FT4418 series).

Only one copy can be made in

black and color.

No. Section/Item FT4220/4222

(A110 and A111) FT4418/4421

(A048 and A054)

Cleaning

1Cleaning Blade The plate on the rubber blade is

removed. ----

2Toner

Overflow

Sensor

Same as FT4418

Paper Feed

1Paper Size

Detection in

2nd and 3rd

Feed Station

The paper size switches are

actuated by a paper size

detection block. To change the

paper size, it is necessary to set

the paper size detection block of

the paper tray to match the

paper size.

When the paper end guide is

pushed against the paper stack,

the actuator plate slides into

position and actuates the

appropriate paper size switches.

22nd and 3rd

Paper Feed

Roller

To achieve 22 CPM from the 3rd

paper feed station, the stop

angle of the paper feed roller is

changed.

To prevent the corner of the feed

roller from hitting the paper stack

when the paper tray is pulled

out, the corner of the paper feed

roller is cut.

----

3Corner

Separators on

Paper Tray

To reduce the occurrence of dog

ear and double feed, the shape

of the corner separators on the

paper tray is changed.

----

4Tray Lock

Solenoid No

U7 is displayed when the duplex

unit is opened during the duplex

operation.

Yes

Others

1RAM Clear To prevent false RAM clear, the

following items are modified. ----

1) To minimize electrical noise,

the main board is secured by

four ground screws.

2) Optional equipment is on the

main board.

MAJOR UNIQUE PARTS FOR PIGEON SERIES

(Compare with FT4418 Series)

PM Parts

Parts Number Description Remarks

A0699510 Drum Common with the FT5733 series

A0063570 Cleaning Blade Common with the FT4460

A1109500 Paper Feed Roller (4 pcs/set) for

2nd and 3rd feed stations. This roller will be used for the

FT4418 series.

AA010072 Ozone Filter This ozone filter will be used for

the FT4418 series.

Electrical Parts

Parts Number Description Remarks

A1105160 Main Board for FT4220

A1115160 Main Board for FT4222

AZ230039 DC Power Supply Board for

FT4222 DC power supply for FT4222

same as FT4418

A1115520 AC Drive Board - 115 V

A1115620 AC Drive Board - 220 V

AZ320069 Power Pack - CC/Grid/Bias

AX530017 Exposure Lamp - 115 V

AX530016 Exposure Lamp - 220 V

A1105235 Erase Lamp

AX440066 Fusing Lamp - 115 V

AX440067 Fusing Lamp - 220 V

A1105640 Noise Filter Board (for 220 V only)

AX200095 Registration Clutch

Relay Roller Clutch

A1105214 Scanner Motor

A1105550 Operation Panel Ass’y

- LT, FT4220(Ricoh)

A1115551 Operation Panel Ass’y

- LT, FT4222 (Ricoh)

A1105650 Operation Panel Ass’y

- A4, FT4220(Ricoh)

A1115651 Operation Panel Ass’y

- A4, FT4222 (Ricoh) Electrical Spring Type Magnetic

Clutch.

A1106692 Operation Panel Ass’y

- FT4220(SAVIN)

A1116692 Operation Panel Ass’y

- FT4222 (SAVIN)

A1106492 Operation Panel Ass’y

- LT, FT4220(GES)

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