Ricoh pfu3800c Service Manual 2

TWO-TRAY PAPER FEED UNIT

(Machine Code: G568)

23 February, 2001 COVER REPLACEMENT

1. REPLACEMENT AND ADJUSTMENT

1.1 COVER REPLACEMENT

[A]

1. Rear cover [A] (! x 2)

G568R102.WMF

Peripherals

G568-1

ROLLER REPLACEMENT 23 February, 2001

1.2 ROLLER REPLACEMENT

1.2.1 PAPER FEED, SEPARATION, AND PICK-UP ROLLERS

[B]

1. Paper tray

2. Pick-up roller [A] (1 hook)

3. Paper Feed Roller [B] (" x 1)

4. Separation Roller [C] (" x 1)

[A]

[C]

G568R101.WMF

G568-2

23 February, 2001 PAPER FEED MOTOR AND MAIN BOARD

1.3 PAPER FEED MOTOR AND MAIN BOARD

[B]

[A]

G568R103.WMF

1. Rear cover (☛ 1.1 COVER REPLACEMENT)

2. Paper feed motor [A] (# x 1, ! x 3)

3. Main board [B] (! x 2)

Peripherals

G568-3

TRAY LIFT MOTORS 23 February, 2001

1.4 TRAY LIFT MOTORS

1. Rear cover (☛ 1.1 COVER
REPLACEMENT)

2. Tray lift motor [A] (# x 1, ! x 2)

1.5 PAPER FEED CLUTCHES

1. Rear cover (☛ 1.1 COVER
REPLACEMENT)

[A]

G568R104.WMF

[A]

2. Paper feed clutches [A] (! x 1, 1
bracket, 1 bushing)

G568R105.WMF

G568-4

23 February, 2001 PAPER FEED UNIT REPLACEMENT

1.6 PAPER FEED UNIT REPLACEMENT

[A]

G568R107.WMF

1. Vertical transport cover [A] (1 hook)

2. Paper feed unit [B] (! x 2, # x 1)

[B]

G568R108.WMF

Peripherals

G568-5

OVERVIEW 23 February, 2001

2. DETAILED DESCRIPTIONS

2.1 OVERVIEW

2.1.1 MECHANICAL COMPONENT LAYOUT

21

10

3
4

9

1. Upper Pick-up Roller

2. Upper Paper Feed Roller

3. Upper Relay Roller

4. Upper Separation Roller

5. Lower Relay Roller

8

6. Lower Paper Feed Roller

7. Lower Separation Roller

8. Lower Pick-up Roller

9. Lower Tray

10. Upper Tray

G568D001.WMF

5
6
7

G568-6

23 February, 2001 OVERVIEW

2.1.2 ELECTRICAL COMPONENT LAYOUT

1

2

3

4

5

6

7

8

9

10

11

25

24

12
13
14

23

22

21

20

1. Paper Size Switch 1

2. Paper Size Switch 2

3. Paper Size Switch 3

4. Paper Size Switch 4

5. Main Board

6. Upper Paper Height 1 Sensor

7. Paper Feed Motor

8. Upper Paper Height 2 Sensor

9. Upper Lift Sensor

10. Upper Paper Feed Clutch

11. Upper Paper End Sensor

12. Upper Tray Lift Motor

13. Lower Paper Feed Clutch

15

16

17

1819

G568D101.WMF

14. Vertical Guide Switch

15. Lower Lift Sensor

16. Lower Tray Lift Motor

17. Lower Paper End Sensor

18. Lower Relay Sensor

19. Lower Paper Height 2 Sensor

20. Lower Paper Height 1 Sensor

21. Upper Relay Sensor

22. Paper Size Switch 4

23. Paper Size Switch 2

24. Paper Size Switch 3

25. Paper Size Switch 1

Peripherals

G568-7

OVERVIEW 23 February, 2001

2.1.3 DRIVE LAYOUT

1

2

11

10

9

8

7

6

5

1. Tray Motor

2. Upper Paper Feed Clutch

3. Lower Paper Feed Clutch

4. Lower Relay Roller

5. Lower Separation Roller

6. Lower Paper Feed Roller

3

4

G568D102.WMF

7. Lower Pick-up Roller

8. Upper Separation Roller

9. Upper Relay Roller

10. Upper Paper Feed Roller

11. Upper Pick-up Roller

G568-8

ABCDEFGH

POINT TO POINT WIRING DIAGRAM (Two-tray Paper Feed Unit: G568)

1

2

3

4

5

Symbol Table

6

- 8

- 7

- 6

C
N

- 5

- 4

1

- 3

2

- 2

0

- 1

Main Frame

C
N

PSU

1

Paper Feed Motor

Upper Paper Feed

Clutch

Lower Paper Feed

Clutch

Upper Tray Lift Motor

Lower Tray Lift Motor

Right Door Safety

Switch

M1

MC1

MC2

M2

M3

SW9

DC Line
Pulse Signal
Signal Direction

!

Active High
Active Low

"

[ ]

Signal Level

ABCDEFGH

C
N
1
2
1

126 126

- 7

- 6

- 5

- 4

- 3

- 2

- 1

C
N
2

- 2

1
2

- 1

4

- 2

1
2

- 1

5

- 2

- 1

- 2

- 1

- 1

C

- 3

N
1
2

- 2

8

H1

Tray

Heater

(Option)

CN100

- 1

- 2

- 3

- 4

- 5

- 6

- 7

- 8

- 9

- 10

- 11

- 12

- 13

- 14

CN101

- 1

- 2

- 4

- 5

- 6

- 7

CN102

- 1

- 2

- 3

- 4

CN102

- 9

- 10

- 11

- 12

CN103

- 1

- 2

- 4

TXD
RXD
[0] CGND
[0] CGND
[5] Vcc
[5] Vcc
[0] AGND

[0] AGND
[0] AGND

[0] AGND
[24] Vaa
[24] Vaa
[24] Vaa
[24] Vaa

[24] Vaa.SW
[24] Vaa.SW
[24 0/24]
[24 0/24]

[24 0/24]
[24 0/24]

[24] Vaa
[ 24]"

[24] Vaa
[ 24]"

[ 24]! (+)
[ 24]!

(-)

[ 24]!

(+)

[ 24]!

(-)

[24] Vaa

Open

[ 24]!

[ 24]!

Vaa.SW

Main Board

A
AB
B
BB

(PCB1)

CGND [0]

[ 5]!

Vcc [5]

CGND [0]

[ 5]

"

Vcc [5]

CGND [0]

[ 5]!

Vcc [5]

CGND [0]

[ 5]!

Vcc [5]

CGND [0]

[ 5]

"

Vcc [5]

CGND [0]

[ 5]!

Vcc [5]

CGND [0]

[ 5]

"

CGND [0]

[ 5]

"

CGND [0]

[ 5]

"

CGND [0]

[ 5]

"

CGND [0]

[0 or 5]

Vcc [5]

CGND [0]

[0 or 5]

Vcc [5]

CGND [0]

[ 5]

"

CGND [0]

[ 5]

"

CGND [0]

[ 5]

"

CGND [0]

[ 5]

"

CGND [0]

[0 or 5]

Vcc [5]

CGND [0]

[0 or 5]

Vcc [5]

CN104

- 1

- 2

- 3

- 4

- 5

- 6

- 7

- 8

- 9

CN105

- 1

- 2

- 3

- 4

- 5

- 6

- 7

- 8

- 9

CN106

- 1

- 2

- 3

- 4

- 5

- 6

- 7

- 8

- 10

- 11

- 12

- 13

- 14

- 15

CN107

- 1

- 2

- 3

- 4

- 5

- 6

- 7

- 8

- 9

- 10

- 11

- 12

- 13

- 14

- 1

- 9

- 2

- 8

- 3

- 7
CN129

CN235

- 4

- 6

- 5

- 5

- 6

- 4

- 7

- 3

- 8

- 2

- 9

- 1

- 9

- 1

- 8

- 2

- 7

- 3

CN130

CN236

- 6

- 4

- 5

- 5

- 4

- 6

- 3

- 7

- 2

- 8

- 1

- 9

- 3
819 820 821

- 2

- 1

- 3

- 2

- 1

- 3

- 2

- 1

- 3

- 2

- 1

- 3

- 2

- 1

- 3

- 2

- 1

- 2

- 1

- 2

- 1

- 2

- 1

- 2

- 1

- 3

- 2

- 1

- 3

- 2

- 1

- 2

- 1

- 2

- 1

- 2

- 1

- 2

- 1

- 3

- 2

- 1

- 3

- 2

- 1

822 823 824

131 132 133 134

135 136

137 138 139 140

141 142

S1

S3

S5

S2

S4

S6

SW1

SW2

SW3

SW4

S7

S8

SW5

SW6

SW7

SW8

S9

S10

Upper Lift Sensor

Upper Relay Sensor

Upper Paper End

Sensor

Lower Lift Sensor

Lower Relay Sensor

Lower Paper End

Sensor

Upper Paper Size

Sensor - 1

Upper Paper Size

Sensor - 2

Upper Paper Size

Sensor - 3

Upper Paper Size

Sensor - 4

Upper Paper Height

Sensor - 1

Upper Paper Height

Sensor - 2

Lower Paper Size

Sensor - 1

Lower Paper Size

Sensor - 2

Lower Paper Size

Sensor - 3

Lower Paper Size

Sensor - 4

Lower Paper Height

Sensor - 1

Lower Paper Height

Sensor - 2

1

2

3

4

5

6

ELECTRICAL COMPONENT LAYOUT (G568)

1

2

3

4

5

6

7

8

25

24

9

10

11

12
13
14

23

22

21

20

15

16

17

1819

G568D101.WMF

ELECTRICAL COMPONENT DESCRIPTION (G568)

Symbol Description Index No. P-to-P

Motors

M1 Paper Feed 7 B3
M2 Upper Tray Lift 12 B4
M3 Lower Tray Lift 16 B5

Sensors

S1 Upper Lift 9 G1
S2 Lower Lift 15 G 2
S3 Upper Relay 21 G1
S4 Lower Relay 18 G2
S5 Upper Paper End 11 G1
S6 Lower Paper End 17 G2
S7 Upper Paper Height 1 6 G4
S8 Upper Paper Height 2 8 G4
S9 Lower Paper Height 1 20 G5

S10 Lower Paper Height 2 19 G6

Switches

SW1 Upper Paper Size 1 1 G3
SW2 Upper Paper Size 2 2 G3
SW3 Upper Paper Size 3 3 G3
SW4 Upper Paper Size 4 4 G4
SW5 Lower Paper Size 1 25 G4
SW6 Lower Paper Size 2 23 G5
SW7 Lower Paper Size 3 24 G5
SW8 Lower Paper Size 4 22 G5
SW9 Vertical Guide 14 B5

Motors

MC1 Upper Paper Feed 10 B3
MC2 Lower Paper Feed 13 B4

PCBs

PCB1 Main 5 D6

Heaters

H1 Tray Heater (Option) - C2