Ricoh FT4227 Service manual

INTRODUCTION

The A085/A087/A08 8 cop ier is based on the A069/A073/A07 4 cop ier, the base
copier.

This documentation gathe rs the modif ications to the base copier’s service manual
that service personnel will need to service this cop ier. This package contains the
following:

° A table of contents for the modified manual
° A list of the major difference s between this copier and the base

copier

° A set of selected pages to replace th e ones in th e base copier’s

manual, including revised specifica tions SP mode tables.

° An explanation of this mode l’s new fu nct ions
° An explanation of DF’s (A497) new f unction
° A section for the new sorter sta ple r (A 374)

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 accessib le.

3. Note that some components of the copier and the paper tray unit are
supplied with electrical voltag e 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 hot roller temperature is low when the main switch is turned on, the
copier starts idling automatically when the warm-up period is completed.
Keep hands away from the mechanical and the electrical components to
avoid any injury.

6. If the start key is pressed before the copier completes the warm-up
period (Ready indicator starts blinking), 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.

7. The inside and the metal parts of the fusing unit beco me 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, b ut 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 co urse
on those models.

2. The RAM board on the main control board has a lithium battery which
can explode if replaced incorrect ly. 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 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 photoconductor
according to local regulations. (These are non-toxic supplies.)

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

4. When keep ing 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 chemic al reactions and heat
build-up.

SECTION 1

OVERALL MACHINE

INFORMATION

10 July 1992 MAJOR DIFFER ENT POINTS FROM THE BASE COPIER : A069/A073/A074

1. MAJOR DIFFERENT POINTS FROM THE

BASE COPIER : A069/A073/A074

The major different points of this copier A085/A087/A088 fr om the base
cop ier A069/A073/A074 are listed in the fo llowin g table:

No. Section/Item This model (A085/A087/A088) Base model

(A069/A073/A074)

Major features

1 Copy speed 27 copies/min.

(A4/11 x "8
16 copies/min. (A3)
15 copies/min. (11" x 17")

2 First copy time 5.4 seconds

for type 1 & 3: upper tray

5.8 seconds
for type 2: LCT

(A4/11" x 8
3 Color copy Not applicable Opti on
4 Overlay mode Not applicable Standard for A074
5 Edit function Not applicable Option for A 074
6 Shadows from

pasted originals

7 Combine 2 originals

mode

Erased for normal thickness

paper

Standard with ARDF Not applicable

1/2" sideways )

1/2" sideways )

Operation panel

8 Guidance display Not applicable Standard for A074
9 Beeper Not applicable Standard

10 Indicators (LEDs) The following indicators are not

applicable:

Color copy, full size, overlay,

ten keys zoom, enlarge,

reduce, special features, editor

boar d guidance , area memory ,

use d toner tank, close cover,

set key co unter , call service,

zoom, start key (red/ green)

The f ollowing indicator has

been newly added:

Combine 2 originals

11 Keys The following keys are not

applicable:

Col or copy, ten keys zoom

Optics

12 1st scanne r Newly designed

(The newly designed main

reflector lets shadows be

erased when copying pasted

originals.)

33 copies/min.
(A4 / 11"X8
19 copies/min. (A3)
18 copies/min. (11" x 17")

4.5 seconds
for type 1 & 3: upper tray

4.9 seconds
for type 2: LCT
(A4/11" x 8

Not erased

Standard
(Ove rlay/area memory; A074
only, editor board guidance;
option)

Not applicable

Standard

Original

1/2" sideways )

1/2" sideways )

1-1

MAJOR DIFFERENT POINTS FROM THE BASE COPIER : A069/A073/A074 10 July 1992

No. Section/Item This model (A085/A087/A088) Base model

(A069/A073/A074)

Development

13 Development unit

shift mechanism

Not applicable Standard

Around the drum

14 Automatic drum

current adjustment

Not applicable Standard

Paper Feed

15 Tray lock Solenoid

(not for duple x tr ay)

Not applicable Standard

Fusing

16 Fusing unit Newly designed

(Serviceability has been

improved. The fusing roller

pressure a nd the nip band

width are less.)

17 Pressure roller Newly designed

(The diameter at the middle is

slightly smaller than that at the

ends, reducing the occurrence

ratio of creasing afte r f us ing.)

Original

Original (common with A006)

Process control

18 Process speed 150 mm/sec.

(The ma in motor speed is the

same, but its output is slowed

down by a step-down pulley.)

19 Grid bias voltage Vgi (for image): -715 V

V gp (for sensor pattern): -480 V

20 Separation corona

current

G correction Applies another -2 0 V to the

21 V

22 Exposure lamp

voltage

23 Color toner density

control

24 Development bias

voltage control for
color toner

ac 190 µA ac 210 µA

grid bias voltage after the drum

has rotated 2, 44, 75, and 105

hours.

The target lamp voltage for the

first copy of a copy run is

decreased by –0 .5 V.

Not applicable Standard

Not applicable Standard

180 mm/sec.

Vgi (for image): -745 V
V gp (for sensor pattern): -500 V

Applies another -20 V to the
grid bias voltage after the drum
has rotated 2, 37, 63, and 88
hours.

The target lamp voltage for all
the copies of a copy run are
the s ame.

Pe ripheral equipment

25 Color development

unit

26 Edit erase lamp unit

(Editing interface
adapter type B)

27 Editor board Not applicable Option for A074

Not applicable Option

Not applicable Option

1-2

10 July 1992 MAJOR DIFFER ENT POINTS FROM THE BASE COPIER : A069/A073/A074

No. Section/Item This model (A085/A087/A088) Base model

(A069/A073/A074)

28 Sorter stapler (A366;

fixed bin type)

29 Sorter stapler (A374;

moving bin type)

30 Auto reverse

document feeder
(A497)

Not applicable Option

Option Not applicable

Option with combine 2

origi nals mode

(The software has been

changed. The ARDF with the

new ROM has a different

destination code.

The ARDF can be also installed

on other current models

(A069/A073/A074/A053).)

Option

1-3

SPECIFICATIONS 10 July 1992

2. SPECIFICATIONS

Configuration: Desktop
Copy Process: Dry electrostatic transfer system
Originals: Sheet/Book
Original Size: Maximum A3/11" x 17"
Copy Paper Size: Maximum A3/11" x 17"

Minimum B5/11" x 81/2" - Paper tray

A6/51/2" x 8 1/2"(lengthwise)

-By-pass feed table

(LCT B5/A4/11" x 81/2" sideways only)

(Duplex Copying)
Multiple:
Single:

A4 and B5/81/2" x 11" (sideways)
Maximum A3/ 11" x 17"
Minimum B5/8" x 13"

Copy Paper Weight: • 250-sheet paper tray and 1000-s heet large

capacity tray:
52 –128g/m2, 14 –34lb

• By-pass feed table:

52 –157g/m2, 14 –42lb

• Duplex:

64 –105 g/m2, 17 –28lb

Reproduction Ratios: 4 Enlargement and 6 Reduction

A4/A3 Version LT/LDG Version

200%

Enlargement

Full S iz e 100% 100%

Reduction

141%
122%
115%

93%
82%
75%
71%
65%
50%

200%
155%
129%
121%

93%
85%
77%
74%
65%
50%

Receiving Tray
Capacity:

250 sheets (B4/81/2" x 14" and smaller)
100 sheets (A3/ 11" x 17")

1-4

10 July 1992 SPECIFICATIONS

Power Source: 115V, 60HZ, more than 12A (for N.A)

110V, 60HZ, (for Taiwan)
220/230/240V, 50HZ/60HZ, more than 8A
(for EU and AA)

Power Consumption: Maximum: 1.5 KW

Warm-up: 0.77 KW
Stand -by : 0.14 KW
Co py Cycle (average): 1.2 KW

Noise Emission: Stan d-by: less than 40 dB

Copy Cycle (average):

less than 56 dB (copier only)
less than 59 dB (full system)

Maximum:

less than 62 dB (copier only)
less than 65 dB (full system)

Dimensions:

Width Depth Height

Type 1

Type 2

Type 3

697 mm (1035 mm)

27.4" (40.7")

871 mm (1075 mm)

34.3" (42.2")

871 mm (1075 mm)

34.3" (42.2")

600 mm

23.6"

600 mm

23.6"

600 mm

23.6"

542 mm (574 mm)

21.3" (22.6")

542 mm (574 mm)

21.3" (22.6")

542 mm (574 mm)

21.3" (22.6")

( ): When the by-pass feed table is opened, the copy tray is extended, and
the platen cover is installed.

Weight: Copier only (Without the optional platen

cover= Approximately 2 kg (4.4 lb))
Type 1: approximately 77 kg (169.4 lb)

Type 2: approximately 87 kg (191.4 lb)

Type 3: approximately 83 kg (182.6 lb)
Zoom: From 50% to 200% in 1% steps
Copying Speed: 27 copies/minute (A4/81/2" x 11" sideways)

16 copies/minute (A3)

15 copies/minute ("11 x 17")
Copying Speed

with ARDF:

(Single copy (1 to 1),

27 copies/minute (A4/81/2" x 11" sideways)

16 copies/minute (A3)

15 copies/minute ("11 x 17")
full size)
Warm-up Time: Less than 110 seconds (20°C)

1-5

SPECIFICATIONS 10 July 1992

First Copy Time: 5.4 seconds (A4/81/2" x 11" sideways)

Type 1, 3: (Upper tray feed)

5.8 seco nd s

Type 2: (Large capacity tray feed)
Copy Number Input: Ten keys, 1 to 999 (count up or count down)
manual Image Density

7 steps
Selection:
Automatic Reset: 1 minute standard setting; can also be set to 3

minutes or no auto reset.
Copy Paper Capacity: • By-pass feed table; appr oximately 20 sheets

• Paper tray: app roximately 250 sheets

• Large capacity tray; approximately 1000 sheets

Toner Replenishment: Black: cartridge exchange

(320 g/cartridge)

Optional Equipment: • Platen cover

• Document feeder

• Paper tray unit with one paper tray

• Paper tray unit with three paper trays

• 10 bin micro sorter

• 20 bin mini sorter

• 20 bin mid i sorter

• 20 bin sorter stapler

• Sorter adapter (needed when installing the

mini or midi sorter, or the sorter stapler)

• Interface PCB (needed when installing the

sorter stapler or the menu reader)

• Key counter

• Menu reader ( except for Europe)

• A3 counter (service part)

1-6

(A328)

(A326)

10 July 1992 MACHINE CONFIGURA TION

3. MACHINE CONFIGURATION

3.1 COPIER

TYPE 1 (A085) TYPE 2 (A088) TYPE 3 (A087)
UPPER TRAY 250 DUPLEX 250
LOWER TRAY 250 250 250
LCT – 1,000 1,000

3.2 OPTIONAL EQUIPMENT

10BIN SORTER (A327)

20BIN SORTER

(A423)

20BIN SORTER

(A411)

MENU READER (A952)

ARDF (A497)

SORTER ADAPTER

SORTER ST APLER

(A374)

PAPER TRAY UNIT

(A325)

1-7

PAPER TRAY UNIT

MACHINE CONFIGURATI ON 10 July 1992

REQUIRED

COPIER

TYPE 1

(A085)

1 TRAY

PAPER

TRAY UNIT

SORTER

DOCUMENT

FEEDER
MENU READER (A952) o o o **

(A325)

3 TRAY

(A326)

10 BIN
(A327)

20 BI N MINI

(A423)

20 BIN MIDI

(A411)
20 BIN

STAPLER

(A374)

ARDF (A497) o o o

TYPE 2

(A088)

ooo

ooo

ooo

ooo *

ooo *

ooo * **

TYPE3
(A087)

OPTIONAL

EQUIPMENT

SORTER

ADAPTER

(A328)

INTERFACE

PCB

(A344)

NOTE: * The sorter adapter is required to install the 20 bin

mini sorter, 20 bin midi sorter or sorter stapler .

* * The I/F board is required to install the sorter stapler

or Menu Reader.

1-8

SECTION 2

DETAILED SECTION

DESCRIPTION

[Fig. 2]

10 July 1992 OPTICS

1. OPTIC S

1.1 FIRST SCANNER

[C]

[B]

[Fig. 1]

The first scanner of this copier has been re-designed from the one for the
base model (A069/A073/A074) to reduce shadows of p asted originals.

Although the exposure lamp’s rating voltage is the same, the shape of the
reflectors have been changed, as shown above. Figure 1 is fo r the base
model, and figure 2 is for this copier.

[A]

[B]

[A]

For figure 1, the light intensity [A] reflected from the main reflector is stronger
than the light intensity [B] reflected from the sub reflector. The proportion is
about 65% to 35%. Under this condition, as the scanner moves under the
original, the lead edge shadow [C] of the pasted parts of an original might
appear on copies.

For figure 2, the proportion of the light intensity [A,B] reflected from the main
and sub reflectors is almost 50% to 50%. Under this condition, both the lead
and trail edges of the pasted parts of an original will not make shadows.

Shadows might appear not only at the lead edge, but also the inner side of
the pasted parts. The light intensity of the exposure lamp at both ends is
slig htly stronge r than that at the center. This is nece ssary to have even
exposure on the drum surface through the lens. Because of this, eliminating
the side edge shadow of pasted parts of an original is very difficult. Although
the light intensity dis tribution of the expo sur e lamp from end to end has been
slightly changed on this model, the side edge shadow might appear on thick
pasted originals.

2-1

SECTION 3

INSTALLATION

10 July 1992 COPIER INSTALLATION

1. COPIER I NSTALLATION

1.1 ACCESSORY CHECK

1. Receiving Tray.......................................................................1

2. Outer Decal - Symbol Explanation .........................................1

3. Sorter Key Top and Cover.....................................................1

4. Counter Set Key (–17 machine only) .....................................1

5. Installation Procedure ............................................................1

6. Operating Instructions (Except –27 machine)........................1

7. New Equipment Condition Report

(–17, –19, –27, –29 machine only) ................................ 1

8. Envelope for NECR (–17 machine only).................................1

9. User Survey Card (–17 machine only)...................................1

10. Equipment Quality Report (–15 machine only).......................1

3-1

[E]

COP I ER INS TALLATION 10 July 1992

1.2 INSTALLATION PROCEDURE

[A]

[A]

[A]

NOTE:

[B]

[D]

[C]

[A]

Keep the shipping retainers after installing the machine. They will
be reused if in the future the machine is transported to an
another location.
Proper reinstallation of the shipping retainers is required in order
to avoid any transport damage.

1. Remove the 12 strips of tape [A] as shown.

2. Open the front door and remove 4 strips of tape [B] as shown.

3. Pull out the duplex tray [C] and remove the 2 str ips of tape [D] and 3
sheets of paper [E] (duplex machine only).

3-2

10 July 1992 COPIER INSTALLATION

[A]

[D]

[B]

[C]

[E]

4. Remove the left scale [A] (2 shoulder screws).

5. Remove the scanner lock pin [B] simply by pulling it up from the front
and the r ear side of the left scale bracket .

6. Reinstall the left scale.

7. Remove the left optics cover [C] (1 screw).

8. Remove the scanner lock plate [D] (1 screw) and reinstall the left optics
cover.

9. Remove the ship ping retainer [E] ho lding the ozone filter. The retainer is
taped on the upper exit cover.

3-3

[C]

COP I ER INS TALLATION 10 July 1992

[E]

[C]

[B]

[A]

[D]

[F]

10. Push the development unit lock lever [A] to the right (to the lock
position).

11. Move the development release lever [B] to the right and pull out the black
development unit [C] half way. Holding the toner supply unit [D] with your
right hand and the bottom of the development unit with your left hand,
pull the unit all the way out . Place the unit on a clean sheet of paper.

12. Separate the toner supply unit from the development unit (3 screws).

13. Pour one pack of black developer [E] into the development unit while
turning the development roller knob [F] counterclockwise. This will
distribute the developer inside the unit.

14. Remount the toner supply unit on the development unit.

3-4

10 July 1992 COPIER INSTALLATION

[B]

[C]

[A]

[D]

[E]

15. Lower the transfer & separation corona unit by pulling down the release
lever [A].

16. Turn the cleaning unit release lever [B] counterclockwise to the upright
posit ion . (Th e cleaning unit is released from the drum.)

17. Remove t he drum pr ot ective sheet [C] from the developm ent unit
opening.

CAUTION: To avoid damaging the pick-off pawls, remove the drum

protective sheet by pulling the lower side as shown in the
figure.

18. Turn the cleaning unit release lever clockwise to the set position.

19. Remove the clean ing blade lock plate [D].

20. Reset the transfer & separation corona unit [E].

3-5

[D]

[E]

COP I ER INS TALLATION 10 July 1992

[B]

[C]

[C]

[A]

[F]

21. Install the black development unit [A] in the copier, and remove the cover
sheet [B] from the toner supply unit.

NOTE: • When installing the development unit, be sure that the

development unit rail is placed directly on the development
unit guide rail.

• Make sure that the development release lever [C] is in its

original p os ition after the development unit is set.

22. Shake the toner cartridge [D] well from side to side. While pushing the
toner cartridge in, insert it halfway into the holder with the seal [E] up.

23. As you peel off the seal, insert the cartridge completely. While pushing
the toner cartridge in, turn it counterclockwise until it stops.

24. Slide out the charge coron a unit [F] until it is fully extended and push it
back in to the o riginal position. Rep eat th is actio n several time s.

3-6

10 July 1992 COPIER INSTALLATION

[B]

[D]

[F]

[E]

[C]

[A]

25. Close the front door and set the copy tray [A].

NOTE: The following steps from 26 to 29 are required only to install the

optional platen cover [B].

26. Remove the rear cover (remove 2 screws and loosen 2 screws).

27. Install the 2 shoulder screws [C] on the top cover as shown.

28. Pass the harness [D] throu gh the hole of the top cover and install the
optional platen cover (2 screws).

29. Couple the platen cover sensor connector [E] (3P white) with the copier
and reinstall the rear cover.

30. Stick the symbols explanation decal [F] on the top cover as shown. (If the
ARDF will be installed, stick the decal on the corresponding position of
the ARDF.)

31. If local voltage is 230 V or 240 V, perform t he vo ltage change procedure
(following the installation procedure).

3-7

COP I ER INS TALLATION 10 July 1992

32. Load A3 ( 11" x 17") paper either in the 1st or the 2nd paper t ray and plug
in the machine.

33. While pressing both the "1" and "3" on the operation panel number keys,
turn on the main switch in order to access the SP mode.

NOTE: Release the number keys after confirming that the auto image

density indicator and the copy counter number "0" are blinking.

34. Enter "65" using the number keys and then press the enter key.
(The copier starts the black developer initialization, and this lasts about 5
minutes.)

35. Enter "66" using the number keys and press the enter key.
Press "1", then the enter key.
(The copier performs the drum initial setting.)

3-8

10 July 1992 COPIER INSTALLATION

36. Enter "54" using the number keys and press the enter key, then the start
key.
(The copier performs ID/V sensor adjustments.)

37. Enter "48" using the number keys and then press the enter key twice.

38. Set the test chart on the exposure glass.

39. Make a full size copy at the manual image density level # 4 (center) aft er
the copier has warmed up.

3-9

COP I ER INS TALLATION 10 July 1992

40. Confirm that level 2 of the gray scale is just visible on the copy.
If the image density is not correct, go thro u gh the following steps.

(1) Press the enter key twice.
(2) Change the exposure lamp voltage data displayed in the

magnification ratio indic ator. Use the number keys and follow these
rules:

If the image density is too dark: increase the setting
If the image density is too light: decrease the setting

NOTE: The dat a can be s et between 50 and 75 in 0.5 steps.
(3) Press the enter key and then make a copy.
(4) Confirm if the image density is correct or not.

If not, repeat the above steps from (1) to (3).
NOTE: The initial exposure lamp voltage must be adjusted in this step. If

the adjustment is done after step 43 (the machine performs the
initial VL pa ttern detection), th e reference volt age for the
exposure lamp voltage correction will be wrong throughout the
drum’s life.

3-10

10 July 1992 COPIER INSTALLATION

41. Press the enter key and enter "56" using the number keys.

42. Press the enter key, then the start key.
(The copier performs the ADS sensor adjustment.)

43. Turn the main switch off and on.

44. Enter "6" using the number keys and make copies in the full s ize mode.
(The copier performs the VR sensor initial check during the copy cycle.
When the copy cycle is finished, the copier performs the VL sensor initial
check by lighting the expo sure lamp at the home position.)

45. Check the machine operation and copy quality.

46. Tell the customers that this copier sometimes keeps turning on the
exposure lamp at the home position when copy jobs are finished (the
same phenomenon as in step 44).
This is normal for this copier, and this also helps maintain good copy
quality.

3-11

COP I ER INS TALLATION 10 July 1992

VOLTAGE CHANGE (220V to 230/240V)

[B]

[A]

[C]

NOTE: If the voltage of electrical power supp ly from wall outlets is 230V

or 240V, the following procedure must be done before plugging
in the machine.

CAUTION: Make sure that the power cord of the machine is

unplugged before starting the following procedure.

1. Remove the rear cover (remove 2 screws and loosen 2 screws).

2. Swing out the dc power supply board assembly [A] (1screw).

3. Disconnect the 1P connector [B] of the ac main harness and reconnect it
to the appropriate voltage connector [C] of the main tr ansformer.

NOTE: Each 1P connector of the main transformer has its vo ltage rating

printed on it.

4. Reassemble the copier.

3-12

SECTION 4

SERVICE TABLES

10 July 1992 SERVICE PROGRAM MODE

1. SERVICE PROGRAM MODE

1.1 MEMORY ALL CLEAR PROCEDURE (SP99)

CAUTION: Mem ory all clear mode (SP99) clears all the correction data

for process control and software counters, and returns all
the m odes to the default settings. Norma lly, this mode
should not be performed.

This procedure is required only when the copier
malfunctions due to a damaged RAM or when replacing the
RAM board for any reason.

1. Access the SP mode through Access Procedure 3. (While pressing both
the Clear Modes and Clear/Stop keys on the operation panel, turn on the
main switch.)

2. Enter "99" and press the Enter key.

3. Enter "1" and press the Enter key.

4. Enter the factory-set values in the following SP modes:

40: Jogger span (Duplex machine only)
41: Lead edge erase
42: Registration
43: Vertical magnification
44: Horizontal magnification
45: Duplex magnification (Duplex machine only)
47: Focus adjustment
50: Lens error correction

62: Grid reference voltage
161: Grid volt/M-CH(P)
162: T-CH PWM
163: D-CH (AC) PWM
164: D-CH (DC) PWM

NOTE: There is an SP data table sheet underneath the front upper cover

which gives the above factory -set values.

5. Turn off the main switch.

6. Clean the used toner tank because the toner end counter has been
cleared.

4-1

SER VICE PROGRAM MOD E 1 0 July 1992

7. Replace the OPC drum with a new one.
NOTE: Sinc e the drum counter for the process control has been

cleared, the old drum cannot be used. If the old drum is used
after all memory is cleared, a dirty background and/or toner
scattering will appear on copies sooner or later because proper
VG correction will not be applied to the drum.

8. Clean the optics, sensors, and inside of the machine if necessary.

9. If the high voltage supply board - C TBG and/or - D is not the o riginal one,
do the following:

1) Clean the corona unit casings and replace the corona wires with new
ones.

2) Enter to the SP mode by the access procedure 2.

3) Enter the grid voltage correction data in SP62 referring to the label on
the high voltage supply board - CTBG.

4) Adjust the transfer corona current if the high voltage supply board ­CTBG is not the origin al one.

5) Adjust the separation coro na current if the high voltage supply board ­D is not the origin al one.

10. Enter the SP mode by access procedure 2. (While pressing both "1" and
"3" on the operation panel number keys, turn on the main switch)

11. Enable optional equipment operation by SP71 (sorter) and SP72 (paper
tray unit) as necessary.

12. Perform the following SP modes:
SP66: Drum initialize
SP54: Auto Vsg/Vlg adjustment
SP48: Exposure lamp voltage adjustment
SP56: Auto ADS gain adjustment

13. Check copy quality and the paper path and do the necessary
adjustments.

4-2