Ricoh FW830 Service Manual RF

ROLL FEEDER

(Machine Code: A454) AND CONNECTOR

(Machine Code: A384)

31 December 1992 SPECIFICATIONS

1. SPECIFICATIONS

Roll Paper Size: Width: 210 mm to 914 mm, 81/2" to 36"

Length: 150 meters

Cut Size: Synchronized with orig inal length up to

3600 mm (142") –Preset Cut: 1189 mm, 841 mm, 594 mm,

420 mm, 297 mm 48", 36", 24", 18", 12"

–Selected Length Cut: 280 mm to 3600 mm

(1 mm per step)

11" to 142" (0.1" per step) Cutting Time: 0.69 seconds Paper Transport Velocity: 100 mm/s Repeat Quantity: 1 to 10 Control: Microprocessor Power Source: +24 volts and +5 volts from the copier Power Consumption: Maximum 70 W Dimensions (W x D x H): 1,355 mm x 255 mm x 385 mm

53.15" x 9.84" x 14.21"

Weight: 32 kg, 70 lb

MECHANICAL COMPONENT LAYOUT 31 December 1992

2. MECHANICAL COMPONENT LAYOUT

1. Paper Feed Motor 5. Cutter Unit

2. Idle Pulley 6. Paper Feed Rollers

3. Timing Belt 7. Paper Roll Spool

4. Exit Rollers 8. Paper Roll

31 December 1992 ELECTRICAL COMPONENT DESCRIPTIONS

3. ELECTRICAL COMPONENT DESCRIPTIONS

Refer to the electrical compone nt layou t on the reverse side of the Poin t to Point (Water proof paper) ind ex nu mbe rs.

Name Function Index No.

Motors

Paper Feed Drives all mechanical components except the

cutter unit.

Cutter Drives the cutter. 83

Switches

Unit Set Cuts power when the entire roll cutter unit is

lifted.

Upper Door Safety

Middle Door Safety

Lower Door Safety

Cuts power when the upper cover is opened. 86

Cuts power when the middle cove r is opened . 84

Cuts power when the lower cover is opened. 85

Sensors

Paper End Detects when the roll paper runs out. 82 Left Cutter Detects whether or not the cutter is at the left

home position.

Right Cutter Detects whether or not the cutter is at the right

home position.

Leading Edge Misfeed detector. Also detects the leading

edge of paper to start paper length pulse count.

Pulse Generator Sup plie s timing pulses to the main board.

(Photointerrupt or)

Paper Entrance Detect misfeeds in the roll feeder connector. 90

Printed Circuit Board

Main Controls all roll cutter unit functions in

accordance with copier CPU.

Solenoid

Paper Pull Out Turns the paper pull-out rollers of the roll

feeder connector.

MECHANICAL OPERATION 31 December 1992

4. MECHANICAL OPERATION

4.1 BASIC OPERATION

[E]

[D]

[A]

[C]

[H]

[F]

80 mm

[B]

[I H]

[H]

[G]

80 mm

[I]

The paper feed rollers [A], which are tu rne d by the pape r fee d mot or [B ], feed paper from the paper roll [C] through the cut te r unit [D] to the paper leading edge sensor [E] accordin g to the signal from the copier. Wh en the pap er leading edge sensor detects the lea ding edge of the paper, the copier CPU starts measuring the leng th of the paper. (The paper lengt h is me asu red by counting the numbe r o f ste ps as the paper feed motor [steppe r motor] turns.) The paper is directed to the shee t feeder [F] or roll feeder connector [G] after the leading edge of the paper reaches the relay rollers [H]. These rollers stop rotating for a moment, then they start rotating again. A paper buckle [I] forms between the roll feeder and sheet feeder (o r roll feeder connector). When the paper reaches the proper length, paper feed stops and the cutter unit cuts the paper. During this period , the paper is fed to the copier from the roll feeder continuously. The paper is cut during the time it takes for the paper buckle to be pulle d straight. This allows for a neat cut. After that, the paper is delivered to the shee t feed er or roll fe ed er con ne cto r, the roll feeder returns to the stand-by condition.

31 December 1992 MECHANICAL OPERATION

4.2 OPENING AND CLOSING MECHANIS M

To load a roll of paper the roll cutter must be opened as shown in the illustration. Gas springs on either end of the machin e aid in opening the un it, and lo ck pins hold the unit in place when it is in either the fully opened position or when it is closed.

4.3 DRIVE MECHANISM

All rollers are driven by the paper feed motor (stepper motor) through a timing belt [A]. A pulse generator [B] produces timing pulses as the paper feed motor turns. These pulses are use d to control all machine operat ion s.

MECHANICAL OPERATION 31 December 1992

4.4 CUTTER OPERATION

[A]

[C]

[B]

The cutter unit uses a slidin g rotary cutting blade [A] which is p ulle d pa st a fixed blade by a drive wire. The rot ary cutting blade allows the cutter unit to cut paper in both directions. There are home posit ion sensors [B] at both ends of the cutter unit. The cutter motor turn s off , sto pp ing the cutting action, when the rotary cutting blade knob plate [C] tu rns on one of these sensors.

Paper Exists

"ON"

Paper End

24 V

"ON"

31 December 1992 SERVICE TABLES

5. SERVICE TABLES

5.1 TEST POINTS

Function TP No.

GND TP104, 10 5

VA (24 V) TP102

Paper End Sensor TP101

VC (5 V) TP103

5.2 SIGNAL LEVELS

Signal name In or Out CN No. Signal Level

Leading Edge sensor

Left Cutter sensor I 103-B2 Right Cutter sensor I 103-A3

Pulse Generator I 103-B4

Paper End I 103-B8

Door Open I 103-A10

Cutter Motor + O 103-A5 Cutter Motor – O 103-B5

I 103-A2

0 V

Home Position

5 V

0 V

Door Open

0 V

Power Down O 103-A8

5 V

0 V

Paper Feed Motor OFF

SERVICE TABLES 31 December 1992

Signal name In or Out CN No. Signal Level Phase A O 103-A6 Phase B O 103-B6 Phase A O 103-A7

0 V

"ON"

24 V

Phase B O 103-B7 Set switch O 103-B9

0 V

Roll Paper Set

31 December 1992 SERVICE TABLES

Pulse

Generator

1 Leading Edge

Sensor

1 Right

Cutter

Sensor

Vcc

GND

Vcc

GND

103-B3

103-A4

103-B4

103-A1

103-B1

103-A2

103-A3

103-A5

103-B5

103-A6

103-B6

103-A7

103-B7

103-A8

103-B8

103-A9

103-B9

Cutter Motor +

Cutter Motor -

Phase A

Phase B

Phase A

Phase B

Power Down

Paper End

GND

Roll Paper Set

605-1

605-2

605-3

605-4

605-5

605-6

605-7

605-8

605-9

605-10

601-1

601-2

601-3

602-1

602-2

602-3

602-4

602-5

602-6

603-1

+12 V

Paper End

GND

+24 V

Set Switch

+24 V

Door Open

Cutter Motor +

Cutter Motor -

+24 V

Paper End Sensor

Left Cutter Sensor

103-A10

103-B10

103-B2

Copier Main Board

Door Open

GND

+5 V

GND

+24 V GND

605-11

605-12

604-1

604-2

604-3

604-4

603-2

603-3

603-4

603-5

603-6

+24 V

Phase A

Phase B

Phase A

Phase B

Paper Feed Motor

Roll Feeder Main Board

INSTALLATION PROCEDURE 31 December 1992

6. INSTALLATION PROCEDURE

6.1 ACCESSORY CHECK – ROLL FEEDE R

Check the accessories and their quantit ies according to the following list:

1. Paper Spool ............................................................................1 pc

2. Pan Head Screw.....................................................................8 pcs

3. Clamp......................................................................................1 pc

CAUTION: • The A098 copier must be placed on the table bef ore the roll

feeder is installed. Otherwise , th e table may become unbalanced during installation.

• Unplug the copier power cord befo re sta rtin g th e followin g

procedure.

NOTE: The roll feeder connector (A384) should be inst alle d after t he roll

feeder is installed if the she et fee der (A 453) is n ot insta lled .

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