Ricoh FT4220 Installation guide

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.
1

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
2

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
3

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
4

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.
5

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.
6

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)
7