Ricoh FT3320 Guida all'installazione

SERVICE TRAINING

MANUAL

FT3320

Table of Contents

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

OPERATION PANEL . . . . . . . . . . . ●● “**” *D*” “*””

1-4

COPY PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-6

FUNCTIONAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-7

MECHANICAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . ...1-8

DRIVE IAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...1-9

ELECTRICAL COMPONENT IAYOUT . . . . . . . . . . . . . . . . . . . . .1-10

ELECTRICAL COMPONENT DESCRIPTIONS . . . . . . . . . . . . ...1-12

AC AND DC POWER DISTRIBUTION . . . . . . . . . . . . . . . . . . ...1-15

OVERALL MACHINE CONTROL . . . . . . . . . . . . . . . . . . . . . . ...1-16

DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-1

1. SELENIUM DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-1

2. HANDLING THE DRUM . . . . . . . . . . . . . . . . . . .......2-1

DRUM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-2

I. OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-2

2. TEMPERATURE COMPENSATION . . . . . . . . . . . . . . ...2-3

3. CORONA WIRE CLEANER . . . . . . . . . . . . . . . . . . . . ...2-4

4. CHARGE CORONA CIRCUIT . . . . . . . . . . . . . . . . . . ...2-5

OPTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-6

I. OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-6

2. SCANNER DRIVE MECHANISM . . . . . . . . . . . . . . . . ...2-7

3. SCANNER DRIVE CIRCUIT . . . . . . . . . . . . . . . . . . . . ...2-8

4. EXPOSURE IAMP CONTROL . . . . . . . . . . . . . . . . . . ...2-9

5.0 RIGINAL I. D. SENSING . . . . . . . . . . . . . . . . . . . . . . ...2-l0

6. SERVICE CALL CONDITIONS . . . . . . . . . . . . . . . . . . ...2-11

DEVELOPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-12

1. OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-12

2. DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . ...2-13

3. SEALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-14

4. CROSS-MIXING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-15

5. IMAGE DENSITY CONTROL . . . . . . . . . . . . . . . . . . . ...2-16

6. BIAS FOR ID SENSING . . . . . . . . . . . . . . . . . . . . . . . ...2-19

7. DEVELOPMENT SET SWITCH . . . . . . . . . . . . . . . . . ...2-20

TONER DENSITY DETECTION AND TONER SUPPLY . . . . . ...2-21

●

IMAGE

●

TONER DENSITY DETECTION . . . . . .

. . . . . . . . . . . ...2-21

TONER DENSITY CONTROL . . . . . . . .

. . . . . . . . . . . ...2-22

TONER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...2-23

TONER END DETECTION . . . . . . . . . . . . . . . . . . . . . ...2-25

PAPER

●

PAPER

●

IMAGE

●

SECTION 1

OVERALL MACHINE

INFORMATION

SPECIFICATIONS

Configuration:

Copying Process:

Original:

Original Size:

Copy Paper Size:

Copy Paper Weight:

Reproduction Ratio:

Copying Speed:

First

Copy Time:

Warm-up Time:

Copy Number Input:

Manual Image Density

Selection:

Automatic Reset:

Paper Feed System:

Exposure System:

Lens:

Light Source:

Desk top (fixed platen)

Dry electrostatic transfer system

Book/sheet

Maximum: A4/811z” x 14”

Maximum: A4/8vz” x 14“

Minimum: A6/5112° x

81I2”

52 to 128 grams (14 lb to 34 lb)

1:1

12 copies/minute (A4/81/2° x 1 1”)

10 copies/minute (81/2” x 14“)

9 seconds

(A4/8vz” x 11”)

Approximately 35 seconds (room temp.

20 C/68 F)

Numeral keys, 1 to 99

7 steps (development bias variable)

seconds.

Quantity entered returns to “1”.

Manual image density

mode returns

to Auto ID

mode. Interrupt mode returns to the previous

mode.

Feed and reverse roller.

Cassette feed,

250

sheets.

Manual feed, 50

sheets.

Slit exposure, moving optics

Through lens, F10, f= 180 mm

Halogen lamp:

97 v, 300 w (115V)

180 V, 350 W (220/240V)

1 Nov. '87

Photoconductor:

Charge System:

Development System:

Toner Density Control:

Development Bias System:

Toner Replenishment:

Toner Consumption:

Cleaning System:

Quenching System:

Image Transfer:

Paper Separation:

Image Fusing:

Fusing Lamp:

Electronic Control System:

Copy Tray Capacity:

Self-diagnostics:

Power

Source:

Average Power

Consumption:

Selenium drum (H type)

Single wire dc corona

Magnetic brush roller

Automatic (photosensor)

Pulse width modulation switching

Cartridge exchange (200 g/cartridge)

Approximately 4,500 copies/cartridge (A4, 7%

original)

Blade and brush

Photo quenching

(neon lamp)

Single wire dc corona, pre-transfer lamp

Single wire ac corona and pick-off pawls

Heat and pressure rollers

Halogen lamp (850 W)

Microprocessor

100 sheets (standard

copy paper)

8 codes, displayed in the copy counter

110 V/60 Hz . . . . . ..I2 A

115 V/60 Hz . . . . . ..I2 A

220 V/50 Hz . . . . . . . 6 A

240 V/50 Hz . . . . . . . 6 A

220 V/60 Hz . . . . . . . 6 A

Warm-up: 0.89 kW

Stand-by: 0.15 kW

Copying: 0.66 kW

(A4)

Max:

1.3 kW (110 V/l 15 V/220 V)

1 Nov. '87

Dimensions (WXDXH):

580 x 495 x 320 mm

22.8 x 19.5 x 12.6 inches

Weight:

38 kg (83.8 lb)

Optional Equipment: Key counter

●

Additional Cassette

Original Table

1 Nov. '87

1. Check Paper Path Indicator

Indicates that a misfeed has oc-

curred within the copier.

2. Load Paper Indicator

Lights when no paper is in the cas-

sette or the manual feed table

3. Manual ID Indicators

Show the manually selected

density.

4. Add Toner Indicator

image

Lights when it is time to change the

toner cartridge. When continuously

lit, the copier cannot be used until a

new cartridge is installed.

5. Copy Counter

Displays the number of copies

entered. While copying, it shows the

number of copies made.

6. Auto Image Density Indicator

Lights when the copier is automati-

cally controlling image density.

7. Ready Indicator

Lights when the machine is ready

to-make copies.

8. Wait Indicator

Indicates that the machine is not

ready to copy.

9. Manual Feed Indicator

Lights when the manual feed table

is open.

1 NOV. '87

- Letter Version -

10. Number Keys

The number keys are used to enter

the desired number of copies.

11. Interrupt Indicator

Lights when interrupt mode is

selected.

Also lights when the

manual feed table is open.

12. Interrupt Key

Press to make interrupt copies

during a copy run.

13. Start Key

Press to start operation.

14. Clear/Stop Key

Press to cancel the copy number

entered. While copying, press to

stop copy operation.

15. Auto Image Density Key

Press to select/deselect automatic

image density mode.

16. Manual Image Density Keys

Press to make copies lighter or

darker. Use these keys to cancel

automatic control and manually

select the image density level.

Note:

The Manual Image Density

indicator or the Auto Image

Density indicator will start

blinking if the ID sensor’s

input becomes abnormal.

1-5

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