Konica 7065 GUIDE MANUAL 7065020e

MAIN BODY

This section covers the structure, functions, operation and method of disassembling and assembling the machine. Observe the following precautions when performing disassembly and assembly work.

1. Be sure to unplug the power cord before working on the machine.

2. Perform all reassembly work by reversing the order in which the component was disassembled, unless otherwise specified.

3. Do not lose small parts (screws, etc.) or insert them in the wrong place.

4. Install all parts completely before operating the machine.

5. Do not loosen the screws indicated as disallowed for removal.

OUTLINE OF THE SYSTEM

MAIN BODY

Expansion memory unit [MU-103]

Post Inserter [PI-108]

Finisher [FS-106]

Finisher [FS-108 BM]

Memory card

Memory card adapter kit

Tamdem kit 7065 [TD-101]

Key counter

3500-sheet LCT [LT-352]

KRDS (TYPE 5)

Printer controller [IP-303]

Network card [KN-301]

PS UG KIT TYPE 2

MODEL

7065

MANUAL

SERVICE HANDBOOK

REVISED EDITION

2 - A - 1

DATE

Jan.2000

PAGE

2-A-1

METHOD

REPLACEMENT

MAIN BODY

7065 PRODUCT SPECIFICATIONS

1. Type

Type: Console type

(floor-mounted type)

Copying method: Indirect electrostatic method Original table method: Fixed Photosensitive material: OPC Sensitizing method: Laser writing method Paper feed method: Two stacked trays (500 sheets,

80 g/m Multi by-pass tray (100 sheets, 80 g/m LCT (1000/1500 sheets, 80 g/m LCT (3500 sheets, 80 g/m

x 2)

)

*1: Optional

2. Functions

Originals: Sheets, books, solid objects Original size: Max. A3 Copy size: A3 to A5R

F4/8 x 13

Magnification Fixed magnifications: x1.00, x1.41, x1.22, x1.15, x0.86,

x0.82, x0.71

Special ratio magnifications: 3 modes Zoom magnification: x0.33 to 4.00 (1% steps) Vertical magnification: x0.33 to 4.00 (1% steps) Horizontal magnification: x0.33 to 4.00 (1% steps) Warm-up time: Less than 6.5 minutes*

(20°C, rated voltage)

First copy time (seconds)

Size

Manual

APS

Continuous copy speed (life size, copies/minute)

Size

Number of continuous copies: 1 to 9999 Copy density selection:

AE, manual Arbitrarily set density (2 modes)

3.9

A4 65

Special functions: Sheet/Cover Interleave, Chapter,

Combination (2-in-1, 4-in-1, 8-in1, overlay), Booklet, Transparency Interleave, Image Insert, Book Copy, Different Series Mixed Original, Text/Photo Enhance (text/photo/pencil), Reverse Image, Repeat, Frame/Fold Erasure, AUTO Layout, Thin/Thick Paper, Shift/Reduction Shift, Nonimage Area Erase, memory function, density monitor, single step,

) *1

)

density shift, printing function, copy reservation, image rotation, weekly timer, job memory

3. Copy Paper

Plain paper High quality paper (60 g/m2 to 90 g/m2) Special paper * Label paper

(By-pass feed only)

* OHP film * Blueprint master paper * Recycled paper * High quality paper (50 g/m

91 g/m

to 170 g/m2)

to 59 g/m2,

4. Options

Finisher: FS-106, FS-108BM

3500-sheets LCT: LT-352 Expansion memory unit: MU-103 Post Inserter: PI-108

Memory card Memory card adapter kit

Tamdem Kit 7065: TD-101

Key counter Printer controller: IP-303 Network card: KN-301 PS UG KIT TYPE 2

KRDS: KRDS TYPE 5

5. Particulars of Machine

Power source: 230 VAC -14% to +10.6%,

50 Hz/60 Hz 120 VAC ±10%, 60 Hz

Power consumption: Max 2,300 W (when all options

are connected)

Weight: Approx. 231 kg

MODEL

7065

MANUAL

SERVICE HANDBOOK

*1: 6.5 minutes is the machine for the 230 VAC specification.

Warm-up time differs depend on the power source (voltage).

REVISED EDITION

2 - A - 2

DATE

Jan.2000

PAGE

2-A-2

METHOD

REPLACEMENT

Machine dimensions

1164mm

756mm 710mm

6. Maintenance

Maintenance interval: Every 150,000 copies Machine service life: 5,000,000 copies or 5 years

MAIN BODY

7. Copy Materials

Developer: Common with 7060 Toner: Exclusively for 7065 Drum: OPC drum (φ 80)

Common with 7060

8. Machine Operating Environment

Temperature:10 to 30°C Humidity: 10 to 80%RH

These specifications are subject to change without notice.

2 - A - 3

MAIN BODY

CENTER CROSS-SECTION

Image processing unit

Fixing unit

Reversal/ paper exit unit

Exposure lamp

Cleaning section

Charging corona unit

RADF

PCL

Image read unit

Image write unit

Developing unit

Paper feed unit

Upper tray

Conveyance unit

Lower tray

ADU paper feed/ conveyance unit

LCT-1500 tray

2nd paper feed unit

Transfer corona unit

TSL

Separation corona unit

LCT-1000 tray

2 - A - 4

DRIVE SYSTEM DIAGRAM

[1] Main Drive

Conveyance belt

Toner conveyance screw

DRIVE SYSTEM DIAGRAM

Decurler unit

2nd paper feed roller

Main Motor (M1)

Cleaner MC (MC 10)

Timing belt

2nd paper feed MC (MC3)

2 - B - 1

DRIVE SYSTEM DIAGRAM

[2] Drum/Developing Drive

Drum

Drum motor (M4)

Agitator wheel

Agitator screw

Developing sleeve

Agitator screw motor (M35)

Developing drive motor (M3)

2 - B - 2

[3] Paper Feed Drive

DRIVE SYSTEM DIAGRAM

Upper tray motor (M17)

Lower tray motor (M18)

By-pass paper feed MC (MC7)

Middle conveyance MC1 (MC8)

Paper feed MC (Upper tray) (MC5)

By-pass paper feed roller

By-pass roller

Double feed prevention roller

Paper feed rollers

Middle conveyance MC2 (MC9)

Paper feed MC (Lower tray) (MC6)

Double feed prevention rollers

Feed rollers

Assist drive MC (MC11)

2 - B - 3

DRIVE SYSTEM DIAGRAM

[4] ADU Paper Feed/Conveyance Drive

Timing belt

Paper exit rollers

ADU paper feed motor (M151)

Timing belt

ADU timing CL (CL153)

Timing belt

Paper exit rollers

ADU reversal MC (CL152)

Conveyance roller

ADU paper feed MC (CL151)

2 - B - 4

Reversal roller

[5] 1000-Tray Paper Feed/Conveyance Unit

Conveyance roller (upper)

LCT conveyance CL (CL3)

DRIVE SYSTEM DIAGRAM

Conveyance roller (lower)

LCT 1st paper feed CL (1000) (CL1)

Feed roller

Paper feed roller

Double feed prevention roller

2 - B - 5

DRIVE SYSTEM DIAGRAM

[6] 1500-Tray Paper Feed/Conveyance Unit

Timing belt

Horizontal conveyance rollers

Feed roller

Paper feed roller

Timing belt

Double feed prevention roller

LCT 1st paper feed CL (1500) (CL2)

LCT paper feed motor (M140)

2 - B - 6

[7] Reversal/Paper Exit Unit

DRIVE SYSTEM DIAGRAM

Paper exit conveyance roller (upper)

Paper exit conveyance roller (middle)

Paper exit conveyance roller (lower)

Paper exit motor (M202)

Timing belt

Reversal paper exit motor (M201)

2 - B - 7

EXTERNAL SECTION

[1] Composition

EXTERNAL SECTION

Left side

upper cover

Left side

lower cover

Lower tray

Main switch

ADU

LCT-1500

tray

Front door

Operation panel

Upper tray

Paper feed and conveyance door

LCT-1000

tray

By-pass feed table

LCT conveyance door

Right side

upper cover

RADF

Outer I/F connectors

Rear cover

Right side lower cover

[2] Disassembly and Re-assembly

1. Replacing the Ozone Filter (K)

Caution: Be sure that the power cord has been un-

plugged from the power outlet.

Caution: When replacing the ozone filter (K), ensure the new

filter is fitted securely inside the main body.

a. Procedure

(1) Remove the nine set screws, then remove the rear

cover.

Set screws

Set

screws

Rear cover

Set screws

2 - C - 1

EXTERNAL SECTION

(2) Pull the ozone filter (K) forward and remove it.

Ozone filter (K)

3. Replacing the Dust Proof Filter Assembly

Caution: Be sure to install the dust proof filter so that the filter

material is on the finisher side of the assembly.

a. Procedure

(1) Open the RADF. (2) Remove the two set screws, then remove the original

stopper plate (rear/right).

(3) Remove the five set screws, then remove the original

stopper plate (rear/right).

Original stopper plate (rear)

Set screws

Original stopper plate (right)

(3) Re-install the ozone filter in the opposite sequence to

removal.

2. Replacing the Developing Suction Filter

a. Procedure

(1) Remove the rear cover. (2) Release the lock, open the filter box, and remove the

developing suction filter.

Original stopper plate

Platen glass

(4) Loosen the two set screws, and remove the glass fixing

plate/right.

Set screw

Glass fixing plate/right

Set screw

Filter boxDeveloping suction filter

(3) Re-install the suction filter in the opposite sequence to

removal.

(5) Remove the platen glass.

2 - C - 2

(6) Remove the four set screws to open the bypass table,

and remove the upper cover (middle).

Set screws

EXTERNAL SECTION

Upper cover (middle)

(7) Remove the dust proof filter ass’y, then install the new

dust proof filter ass’y.

Dust proof filter ass'y

(8) Re-install the removed parts in the reverse sequence

to removal.

2 - C - 3

DRIVE SECTION

[1] Composition

DRIVE SECTION

Drum motor (M4)

Agitator screw motor (M35)

Developing drive motor (M3)

Assist drive clutch (MC11)

Main motor (M1)Drum drive unit

[2] Mechanisms

Mechanism Method

Drum drive Gear drive (dedicated motor)

Developing sleeve drive Gear drive (dedicated motor)

Developing agitator drive Gear drive (dedicated motor) 2nd paper feed drive Timing belt + gear drive Conveyance drive Timing belt + gear drive Fixing and paper exit drive Timing belt + gear drive ADU lead-in drive Timing belt + gear drive Toner recycle Timing belt + gear drive

Loop assist drive Clutch + gear drive

*1: Separation of the different parts of the drive system

The drum, developing sleeve and developing agitator of this machine are driven by separate motors in order to improve the serviceability of the drum unit and also to improve the developing performance.

*2: Loop assist drive

Drive which is supplied to the 2nd paper feed roller is also transmitted to the middle conveyance roller in order to stabilize the loop formation before the 2nd paper feed roller. This drive is transmitted from the drive section via the assist drive clutch (MC11) during loop formation.

Loop

Middle conveyance roller

Drive section

2nd paper feed roller

Assist drive clutch (MC11)

2 - D - 1

DRIVE SECTION

[3] Disassembly and Re-assembly

1. Removing and Re-installing the Main Motor Unit

Caution: Be sure that the power cord has been un-

plugged from the power outlet.

Caution: Be sure to remove the drum unit before removing or

re-installing the main motor unit. If you leave the drum unit installed, the cleaning blade is likely to be damaged because the drum will turn when you remove or re-install the flywheel.

a. Procedure

(1) Remove the drum unit from the main body. (Refer to

"Drum unit section".)

(2) Remove the nine set screws, then remove the rear

cover.

(3) Remove the three set screws, then remove the fly-

wheels (three).

(4) Disconnect the relay connector and the four connec-

tors (CN16, 204, 205 and 324), then remove the cable from the wiring clamp.

(5) Remove the four set screws, slide the main motor unit

to the right, then pull it forward and remove it.

Caution: DO NOT strike the main motor unit against the drum

drive gear when removing or re-installing it.

Slotted hole

Guide screw

Set screws

Connector (CN16)

Main motor unit

Connectors (CN204, 205)

Drum drive gear

Set screw

Connector (CN324)

Relay connector

Set screw

Flywheels

Set screws

(6) Re-install the main motor unit in the opposite sequence

to removal.

2. Replacing the Paper Feed Drive Shaft and Fixing Input Gear

a. Procedure

(1) Remove the main motor unit. (2) Remove the three set screws, then remove the fixing

drive plate.

(3) Remove the fixing input gear.

Set screws

Fixing input gear

Fixing drive plate

2 - D - 2

DRIVE SECTION

(4) Remove the four set screws, then remove the paper

feed drive plate.

Set screws

Paper feed drive plate

Set screw

(5) Remove the drive spacer and the paper feed input gear.

Caution: Do not forget to re-install the drive spacer when re-

installing the paper feed input gear.

(6) Remove the bearing and developing drive gear, then

pull out the pin remaining in the paper feed drive shaft. (7) Remove the main body drive belt from the drive pulley. (8) Remove the E ring from the paper feed drive shaft, then

remove the drive pulley. (9) Remove the paper feed drive shaft, then pull out the pin

remaining in the paper feed drive shaft.

3. Replacing the Assist Drive Clutch (MC11)

a. Procedure

(1) Remove the nine set screws, then remove the rear

cover.

(2) Remove the three set screws, then remove the fly

wheels (3 wheels).

(3) Remove the set screw and the connector (CN86), then

remove the wiring support element. (Refer to the 2nd paper feed unit removing/re-installing of the paper feed section.)

(4) Remove the two set screws, then remove the convey-

ance clutch shaft ass’y. (5) Remove the connector (CN169). (6) Remove the E ring, then remove the drive shaft bearing. (7) Loosen the set screw, then remove the assist drive

clutch (MC11).

Setting screw

Assist drive clutch (MC11)

Drive shaft bearing

E ring

Connector (CN169)

Set screw

Bearing

Paper feed drive shaft

Pins

Drive spacer

Paper feed input gear

Developing drive gear

E ring

Drive pulley

Main body drive belt

(10)Re-install the above parts in the opposite sequence to

removal.

Set screw

(8) Re-install the above parts in the opposite sequence to

removal.

2 - D - 3

DRIVE SECTION

[4] M1 (main) Control [5] M4 (drum) Control

40VDC

DCPS

PGND

5VDC

M1 CONT

M1 PLL

SGND

M1 CLK

88-5 88-3

30-A1 30-A3 30-A4 30-A5 30-A2

24VDC

PGND

DCPS

5VDC

SGND

M4 CONT

M4 H/L M4 CLK M4 PLL

99-2 99-5

30-A8 30-A9

30-A10

30-B6 30-A11 30-A12

M1 (main) is controlled by the CB (control board).

1. Operation

M1 is a 40 V drive DC motor which drives the toner recycle, conveyance, 2nd paper feed and fixing sections. M1 is PLL-controlled by feedback signals from a speed sensor installed inside M1 itself, maintaining it at a constant speed. M1 goes ON when the Start button is pressed, and goes OFF again when the final copy has been exited. During warm-up, M1 rotates, causing the fixing roller to rotate.

2. Signals

a. Input signal

(1) M1 PLL (M1 → CB)

M1 rotation monitoring signal [H]: Stop or abnormal or rotation [L]: Normal rotation

b. Output signals

(1) M1 CONT (CB → M1)

M1 drive control signal [L]: M1 ON [H]: M1 OFF

(2) M1 CLK (CB → M1)

M1 rotational speed control reference clock signal

M4 (drum) is controlled by the CB (control board).

1. Operation

M4 is a 24 V drive DC motor which drives the drum and the cleaning guide roller. M4 is PLL-controlled by feedback signal from a speed sensor installed inside M4 itself, maintaining it at a constant speed. M4 goes ON when the start button is pressed, and goes OFF again when the final copy has been exited.

2. Signals

a. Input signal

(1) M4 PLL (M4 → CB)

[L] is output when M4 reaches the specified speed.

b. Output signals

(1) M4 CONT (CB → M4)

M4 drive control signal [L]: M4 ON [H]: M4 OFF

(2) M4 H/L (CB → M4)

M4 rotational speed control gain switchover signal Normally [H]: 370 mm/sec

[L]: 185 mm/sec

(3) M4 CLK (CB→M4)

M4 rotational speed control reference clock signal

2 - D - 4

READ SECTION

[1] Composition

READ SECTION

CCD unit

Optics cooling fan (FM2)

Optics drive wire

Optics rail (R)

Exposure unit

V mirror unit (2nd and 3rd mirrors)

A/D converter board (ADB)

[2] Mechanisms [3] Disassembly and Re-assembly

1. Screws that must not be removed

Mechanism Method Light source Xenon lamp Exposure Light source shift slit exposure Scanning Platen original scanning:

1st, 2nd, 3rd mirror shift RADF original scanning:

Fixed light source/Original moving Lamp power supply Lamp cord Cooling of optics Cooling of intake air using a fan

a. The 14 set screws of the CCD unit

Screws that must not be removed

2 - E - 1

Screws that must not be removed

READ SECTION

b. The read positioning plate set screw and the two

glass stopper plate (right) set screws.

Read positioning plate

Screw that must not be removed

Screws that must not be removed

Glass stopper plate (right)

2. Removing and Re-installing the CCD Unit

Caution: Be sure that the power cord has been un-

plugged from the power outlet.

Caution: Be sure to perform image adjustment after installing

the CCD unit. (For details, refer to "Adjustment section".)

a. Procedure

(1) Remove the original stopper plate, original stopper

plate (right/rear), platen glass and upper cover (middle).

(2) Remove the two set screws, then remove the glass

stopper plate.

Set screws

Glass stopper plate

(3) Remove the two set screws, then remove the lens light

blocking cover 2.

Set screws

Lens light blocking cover 2

2 - E - 2

READ SECTION

(4) Remove the eight set screws, then remove the lens

light blocking cover 1.

Set screws

Set

screws

Lens light blocking cover 1

(5) Remove the left side upper cover. (6) Disconnect the connector (CN49). (7) Remove the eight set screws, then remove the fan

mounting plate.

(8) Disconnect the two connectors (CN420 and 412).

Electronic RDH processing board (E-RDH)

Connector (CN420)

Connector (CN412)

(9) Remove the two set screws, then remove the CCD

unit.

Set screw

Set screws

Connector (CN49)

Set screw Set screws

Fan mounting plate

Set screws

CCD unit

(10) Re-install the CCD unit in the opposite sequence to

removal.

2 - E - 3

READ SECTION

3. Replacing the Exposure Lamp

Caution:

1. Be sure that the power cord has been unplugged from the power outlet.

2. DO NOT touch the glass of the exposure lamp with bare hands.

Caution:

Be sure to check the image after installing the exposure lamp. (For details, refer to "Adjustment section".)

a. Procedure

(1) Remove the original stopper plate, original stopper

plate (right/rear), platen glass and the upper cover (middle).

(2) Move the exposure unit to the notch of the main body

frame on the paper exit side.

(3) Disconnect the connector and remove the two set

screws, then remove the exposure lamp.

Set screws

Exposure lamp

Connector

4. Removing and Re-installing the Exposure Unit

Caution: Be sure that the power cord has been un-

plugged from the power outlet.

Caution:

1. Use the optics positioning jig when installing the exposure unit.

2. Be sure to perform image adjustment after installing the exposure unit. (For details, refer to "Adjustment section".)

a. Removal procedure

(1) Remove the original stopper plate, original stopper

plate (right/rear), platen glass and upper cover (middle).

(2) Remove the seven set screws, then remove the opera-

tion panel and disconnect the three connectors (CN219, 222 and 383).

Connector (CN383)

Set screws

Connector (CN222)

Connector (CN219)

(4) Re-install the exposure lamp in the opposite sequence

to removal.

2 - E - 4

Operation panel

Set screws

(3) Move the exposure unit to the notch of the main body

frame on the paper exit side.

(4) Remove the set screw, then remove the cord retaining

material (B) and disconnect the connector (CN29).

(5) Remove the four set screws, then remove the expo-

sure unit.

Set screws

Connector (CN29)

Exposure unit

Set screws

Set screw

READ SECTION

5. Installing the Optics Wire

Caution:

1. When winding the wire around the pulley, be sure to

run the wire tightly to ensure that it does not ride up the side of the pulley.

2. When re-tensioning or replacing the optics wire, be

sure to use the optics positioning jig.

3. Be sure to perform image adjustment after replacing or

re-installing the wire. (For details, refer to "Adjustment section".)

a. Procedure

(1) Remove the exposure unit. (2) Remove the glass stopper plate. (3) Remove the two set screws, then remove the belt of the

front door from the main body. (4) Disconnect the two connectors (CN381 and 41). (5) Remove the five set screws, then remove the right side

upper cover. (6) Remove the five set screws, then remove the front

cover/lower.

Cord retaining material (B)

b. Re-installation procedure

(1) Insert the Optics positioning jig into the exposure unit

mounting position from the front.

(2) Slide the exposure unit to the paper feed side until it

touches the Optics positioning jig.

Exposure unit

Connector (CN381)

Set screw

Set screws

Connector (CN41)

Front cover/lower

Set screw

Front door

Optics positioning jig

(3) Install the exposure unit on the optics wire mounting

piece using the four set screws.

2 - E - 5

READ SECTION

(7) Move the V mirror unit to the paper feed side, then

insert the optics positioning jigs from the front so as to fix the V mirror unit. Ensure that the jigs pass through the V mirror unit.

(8) Insert the Optics positioning jigs to the exposure unit

mounting position from the front.

Exposure unit

V mirror unit

Optics positioning jigs

(9) The exposure unit mounting piece is installed on the

optics wire in advance. The position of the mounting piece differs depending upon whether it is on the front or the rear wire. Use the wire that has the shorter length from the metal bead at the end to the mounting piece, at the rear.

(10)Place the metal bead at the mid-point of each optics

wire in the mounting hole of the drive pulley, then wind five turns around the pulley to the outside, and four turns to the inside, starting from this point.

Caution:

1. Ensure that there is a metal bead at the end of the outer wire, and a wire terminal at the end of the inner wire.

2. Pull out the outer wire from the top of the drive pulley in the paper exit direction, and pull out the inner wire from the bottom of the drive pulley in the paper feed direction.

(11)After winding the outer wire, fix it to the wire stopper via

the outer side of pulley 1 and the V mirror pulley.

2 - E - 6

READ SECTION

Five

10 10 11

Front

turns

Four turns

Five turns

Rear

Wire stopper

Metal bead

Drive pulley

Optics wire (front)

Wire stopper

Pulley 1

Exposure unit

mounting piece

Metal bead

Wire stopper

Metal bead

Optics wire (rear)

Metal bead

Spring

V mirror unit

Spring fixing plate

V mirror unit

12 13

Set screws

Pulley 1

Rear

Pulley 3

Pulley 2

Spring fixing plate

Metal bead

Wire stopper

Pulley 1

V mirror unit

Optics wire (rear)

Optics wire (front)

Note: There are two grooves in the wire stopper. Ensure that

the outer groove is at the rear and the inner groove at the front.

(12)Pass the inner wire through the notch in the wire

stopper, reverse it at pulley 2, then pass it around the inside of the V mirror pulley and also around pulley 3, in that sequence, and attach the wire terminal to the spring fixing plate. At this time, temporarily fix the spring fixing plate with the set screw.

Exposure unit

Metal bead

mounting piece

Metal bead

Wire terminal

(13)Install the other wire using the same procedure. (14) Slacken each screw that was temporarily fixed, then

install the spring on the spring fixing plate and fix the each screw once again.

2 - E - 7

READ SECTION

[4] M12 (optics drive) Control

M12 H/L

M12 CLK M12 M STOP M12 MODE 0 M12 MODE 1 M12 MODE 2

M12 F/R

M12 CONT

M12

BRAKE

M12 NCR

M12 PLL

SGND

PS2

5VDC

PS4

PS5

PS7

PS8

PS28

SGND

PS3

5VDC

PS9

PS29

223-1 223-2 223-3 223-4 223-5 223-6 223-7 223-8

223-9 223-10 223-11

9-A1 9-A2 9-A3

9-A5

9-A6

9-A7

9-A9

9-B3

9-B6 9-B5 9-B8

9-B2

9-B9

224-1 224-2 224-3 224-4 224-5 224-6 224-7 224-8 224-9 224-10 224-11 M12 PLL

OPMDB

76-1 76-2 76-3

73-1 73-2 73-3

66-1 66-2 66-3

74-1 74-2 74-3

67-1 67-2 67-3

110-1 110-2 110-3

72-1 72-2 72-3

75-1 75-2 75-3

111-1 111-2 111-3

M12 DRIVE C M12 DRIVE A M12 DRIVE B

M12 MAG A'

M12 MAG A

M12 MAG B'

M12 MAG B M12 MAG C' M12 MAG C

SGND

5VDC

M12 FG

PS2

PS4

PS5

PS7

PS8

PS28

PS3

PS9

PS29

225-1 225-2 225-3 228-1 228-2 228-3 228-4 228-5 228-6 228-7 228-8 228-9

226-5 226-1 226-2 226-3

400-4 400-1 400-2 400-3

M12

SGND 40VDC PGND 12VDC

DCPS

1. Operation

a. Operation of M12

M12 is a 3-phase brushless DC motor which is driven using a 3-phase bipolar method. The current flowing through the windings is switched according to the position of the rotor which is detected by a sensor (magnetic sensor) inside the motor.

b. Moving speed of the exposure unit

Moving speed

Magnification Moving speed During scanning 370 mm/sec (life size) Forward 1520 mm/sec Home position search 70 mm/sec Shading correction read 70 mm/sec

c. Position of each sensor

Paper feed side

PS9 PS29 PS3

d. Home position search of the exposure unit

The return operation is executed at low speed when the exposure unit is not at the home position during the main switch ON and the start button is pressed, and detects the home position of the exposure unit when PS9 (ADF home position) is OFF and PS29 (ADF brake) is ON.

e. Shading correction read operation

At the position where PS3 (shading position) goes ON, the light reflected from the white reference plate installed under- neath the glass stopper plate is read.

Home position (PS9 OFF, PS29 ON PS3 OFF)

White correction data collecting

PS28 PS2 PS4

PS9 ON, PS29 OFF, PS3 OFF

PS5 PS7

PS9 OFF, PS29 OFF, PS3 ON

L1 ON

M12 (optics drive) is driven by the OPMDB (optics motor drive board), and is controlled by the CB (control board). Related signals are PS2 (scanner brake), PS3 (shading position), PS4 (paper feed restart), PS5 (optical return), PS7 (optical timing), PS8 (glass detection), PS9 (ADF home position), PS28 (scan EE), and PS29 (ADF brake).

Black correction data collecting

L1 OFF

2 - E - 8

READ SECTION

f. Other operations

(1) During copying (manual, EE)

Start button pressed

EE scan

Exposure scan

(2) Non-image area erase (+ Book copy)

(3) Book copy (EE)

Start button pressed

EE scan

Exposure scan (page 1)

Exposure scan (page 2)

Start button pressed

EE, Size detection scan

Exposure scan (page 1)

Exposure scan (page 2)

2 - E - 9

READ SECTION

2. Signals

a. Input signals

(1) PS2 (PS2 → CB)

The brake is applied to M12 after the specified period from when PS2 goes ON during the forward scan of the exposure unit [L]: Exposure unit detected [H]: Exposure unit not detected

(2) PS3 (PS3 → CB)

White reference plate read position detection signal of the exposure unit [L]: The exposure unit is in the white reference plate

read position.

[H]: The exposure unit is not in the white reference

plate read position.

(3) PS4 (PS4 → CB)

Original leading edge detection signal during platen mode The timer that determines the 2nd paper feed start timing starts when PS4 goes ON during the exposure unit [L]: Exposure unit detected [H]: Exposure unit not detected

(4) PS5 (PS5 → CB)

Return position detection signal of the exposure unit on the leading edge of the original during platen mode [L]: Exposure unit detected [H]: Exposure unit not detected

(5) PS7 (PS7 → CB)

Return position detection signal of the exposure unit on the leading edge of the original during platen mode [L]: Exposure unit detected [H]: Exposure unit not detected

(6) PS8 (PS8 → CB)

Signals to detect the setting of the original glass [L]: Original glass detected [H]: Original glass not detected

(7) PS9 (PS9 → CB)

Signals to detect the home position of the exposure unit [L]: Exposure unit detected [H]: Exposure unit not detected

(8) PS28 (PS28 → CB)

Signals to detect the EE scan (exclude photo mode, non-image area erase mode) starting position of the exposure unit [L]: Exposure unit detected [H]: Exposure unit not detected

(9) PS29 (PS29 → CB)

Signals to detect the home position and the M12 brake starting position during return of the home position of the exposure unit [L]: Exposure unit detected [H]: Exposure unit not detected

(10)M12 PLL (OPMDB → CB)

[L] is output when M4 reaches the specified speed.

(11)M12 MAG A/A' (M12 → OPMDB)

M12 MAG B/B' (M12 → OPMDB) M12 MAG C/C' (M12 → OPMDB) These are the output signals from the sensors (magnetic sensors) contained in M12. OPMDB detects the position of the rotor of the motor by means of these signals, and switches over the M12 DRIVE A to C output.

(12)M12 FG (M12 → OPMDB)

This is a feedback signal from the rotational speed sensor contained in M12. It is compared with the M12 CLK signal from the CB, and the output voltage adjusted so that the feedback signal becomes the same as the M12 CLK signal, thus controlling the rotational speed of M12.

2 - E - 10

+ 118 hidden pages