Ricoh RT15 SPECIFICATIONS

1. SPECIFICATIONS

28 February 1989

Copy Paper Size:

Copy Paper Weight: Tray Capacity:

Lift Time:

Power Source:

Power Consumption: Dimensions:

(W x D x H)

Weight:

B4 (lengthwise)

A4 (lengthwise or sideways)

B5 (lengthwise or sideways) 8½” x 14” (lengthwise) 8½” x 11” (lengthwise or sideways)

52 g to 93 g (14 Ib to 24 lb)

1,000 sheets (may vary slightly depending

on paper weight)

Maximum:

220 V/60 Hz

220 V/50 Hz 0.15 A 240 V/50 Hz 0.15 A 115 V/60 Hz 110 V/60 Hz

Maximum 30 W

410 mm x 545 mm x 220 mm

16.2” x 21.5” x 8.7” 12 kg (26.4 lb)

12 seconds (50 Hz) 10 seconds (60 Hz)

0.15 A

0.3 A

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28 February 1989

2. MECHANICAL COMPONENT LAYOUT

1. Drive Wire

2. Drive Gears

3. Drive Pulley

4. Tray Wire

5. Lift Rods

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28 February 1989

3. ELECTRICAL COMPONENT LAYOUT (FT4460)

1. LCT transformer (TR2)

2. LCT PCB (PCB7)

3. Ac fuse (220 V)

3. Circuit breaker (115V) (NF2)

4. LCT motor (M15)

5. LCT safety switch (SW11)

6. Tray down sensor (S34)

7. Positioning switch (SW12)

8. Paper size sensor (S35)

9. LCT operation panel (PCB12)

10. Paper end sensor (S36)

11. Upper limit sensor (S37)

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ELECTRICAL COMPONENT LAYOUT

LCT transformer (T-2) LCT PCB (PCB-12)

2. Ac fuse (F-2) (220 V)

3. Circuit breaker (CB-2) (115 V)

3. LCT motor (M-17)

4. LCT safety switch (SW-11)

31 January ’89

Tray down sensor (S-39)

Positioning switch (SW-1 2) Paper size sensor (S-40)

LCT operation panel (PCB-13)

10.

Paper end sensor (S-41 )

11.

Upper limit sensor (S-42)

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28 February 1989

4. ELECTRICAL COMPONENT DESCRIPTIONS

Index No.

Motor

Switches

Sensors

10 11

Printed Circuit Boards

Name

LCT Motor

LCT Safety Switch

Positioning Switch

Tray Down Sensor

Paper Size Sensor

Paper End Sensor Upper Limit Sensor

LCT PCB

Function

Lifts and lowers the LCT bottom plate to bring paper to feed position and allow loading of paper.

Disables LCT motor when covers are open. Detects when covers are opened.

Detects when paper size dial is in a standard paper size position.

Detects when tray is completely down to stop tray motor.

Determines what size paper is loaded into the LCT.

Detects paper end condition for LCT. Detects the correct feed height of the

stack of paper in the LCT.

Controls LCT tray Iift interfaces LCT with copier.

Symbol

M15 A-10

SW11

SW12 B-7

S34

S35 B-7

S36 B-9 S37 B-9

PCB7 A-7 to 10

P to P

Location

A-10

B-10

LCT Operation

Panel

Transformer

LCT Transformer

Circuit Breaker

LCT Circuit Breaker

Contains the Down SW, Down indicator, and Open Cover indicator for the LCT.

Steps down wall voltage to 100 Vac for

LCT.

Overload protection for LCT.

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PCB12 B-9

TR2

NF2

A-11

5. MECHANICAL OPERATION

28 February 1989

5.1 DRIVE MECHANISM

A reversible ac motor [A] drives the LCT’s bottom plate up and down.

The motor’s drive is transmitted directly to the tray drive shaft [B] via a worm

gear and worm wheel. The tray wires [C] have braces on them; these braces hold the ends of the two lift rods which support the tray bottom plate. The braces on the wires raise the lift rods [D] and the tray bottom plate when the pulley turns counterclockwise, and they lower them when the pulley turns clockwise.

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28 February 1989

5.2 PICK-UP ROLLER MECHANISM

The pick-up roller [A] is driven by a drive gear [B] to initialize paper feed from the LCT.

The paper end sensor [C] and the upper limit sensor [D] are incorporated in the LCT not the copier. The paper end sensor is used to detect paper end

and the upper limit sensor detects when the tray has reached its upper limit

when the tray is being raised.

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5.3 PAPER SIZE DETECTION

28 February 1989

The paper size dial controls side post positioning and paper size detection. When the paper size dial [A] is rotated, the cam groove [B] moves the size

lever [C], which repositions the guide posts [D]. When the dial reaches a standard paper size, one of the actuator plates [E] enters the paper size sensor [F]. At the same time, the pin [G] on the leaf spring [H] drops into a notch on the inside rim of the dial and the positioning switch [I] deactuates.

When the positioning switch opens, the scan signal is applied to the LCT

paper size sensor. The paper size sensor then reads the pattern of the ac-

tuator plate and sends paper size data to the copier’s CPU.

When the paper size dial is positioned at a non-standard paper size, the

positioning switch is actuated (closed). In this case, the LCT cannot be used; the Load Paper indicator lights and no paper size is displayed on the operation panel. This prevents the skewing that would occur if the guide posts were

not at the correct position.

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28 February 1989

6. ELECTRICAL OPERATION

6.1 DOWN OPERATION

The bottom plate moves down only when the Down key is pressed or paper end occurs. When the Down key is pressed, the flip-flop changes state (all outputs change from LOW to HIGH or vice versa). Then, three things happen simultaneously: (1) The gate circuit turns off, preventing size data from being sent to the copier; (2) The timer circuit turns on, causing the LED in the down key to blink; and (3) SSR1 turns on, energizing the drive motor to move the tray down.

The down sensor is actuated when the bottom plate is fully lowered. This causes the flip-flop to change back to its original state, which turns off SSR1 and resets the timer circuit. The LED in the Down key stays continuously on.

6.2 UP OPERATION

Opening and closing the upper or side LCT cover while the bottom plate is in the down position starts the up operation. This causes the gate circuit to send paper size data to the copier. At the same time the cover safety switch changes the state of the flip-flop and the flip-flop energizes SSR2, which turns on the drive motor to move the tray up. The drive motor stays on until the paper pushes up the pick-up roller. The actuator on the pick-up roller bracket then moves out of the upper limit sensor; this again changes the flip-flop’s state and the motor stops.

The cover safety switch prevents operation if the cover is open by cutting off the ac 100 volt line.

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28 February 1989

7. ACCESSORY CHECK

Check the quantity and condition of the accessories in the box according to the following list:

1. Installation Procedure (115V - English only / 220V - Five Languages)

2. New Equipment Condition Report . . . . . . . . . . . . . . . . . . . . . . . . 1

3. Envelope for NECR (115V only)

4. Pick-up Roller Assembly

5. Gear

6. Screw (M4 x 6)

7. Screw (M4 x 8)

8. Grounding screw (M4 x 10)

9. LCT Mounting Bracket

10. Harness Clamp

11. Caution Decal

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“A” type bracket: For 3rd paper feed station . . . . . . . . (2)

of FT4460

“B” type bracket: (For other model) . . . . . . . . . . . . . . . . . . . . . (2)

“C” type bracket: (For other model) . . . . . . . . . . . . . . . . . . . . . (2)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(115V - English and French,

220V/240V - English and German)

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1 1 1 4 1 2 6

1 1

12. Multilingual Decals (220V/240V only) . . . . . . . . . . . . . . . . . . . . 5

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28 February 1989

8. INSTALLATION PROCEDURE (FT4460)

8.1 LCT INSTALLATION

1. Turn off the copier main switch and unplug the copier power cord.

2. Remove the strips of shipping tape [A].

3. Lift the copier and remove the cover plate [B] on the right side of the system table (2 screws), and then reposition the copier on the table.

NOTE:

If the system does not contain the special system table, move the copier to the right so that the Large Capacity Tray can overhang the end of the table as shown.

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28 February 1989

4. Mount “A’’ type brackets [A] (2 screws each).

NOTE:

Use “A” type brackets when installing the LCT to the third paper feed

station.

Remove the copier rear cover [B] (4 screws).

Open the manual feed table and the front cover, and remove the right cover [C] (6 screws).

Remove the 3rd cassette arm assembly [D] (4 screws).

Move the sub roller unit [E] and the third feed roller [F] to the left (1 stud

screw) as shown.

CAUTION:

Be careful not to peel off the mylar [G].

9. Remove the nylon hub [H] and the snap ring [I].

10. Reinstall the right cover.

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28 February 1989

11. Press the pad positioning plate [A] down and unhook the spring [B] using a small screwdriver.

12. Place the large capacity tray [C] in the cassette holder on the third paper feed station.

NOTE: Make sure that the rib of the tray side plate fits into the groove on

the cassette holder.

13. Open the side and top covers and secure the tray to the third paper feed station (2 screws).

14. Install the pick-up roller assembly [D] and the gear [E] on the 3rd feed roller shaft.

15. Now move the sub roller unit [F] and the third feed roller [G] to the right and reinstall them (1 stud screw) while holding the friction pad down.

CAUTION:

Make sure that the paper position feeler [H] is positioned under

the sensor actuator [I].

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21 April 1989

16. Remove the harness hole plate [A] (1 screw) and pass the tray harness through the harness hole [B].

17. Disconnect CN508 and CN507 on the paper feed PCB [C].

18. Connect the tray harness to the paper feed PCB [C] as follows:

3P red connector [D] to CN508 4P white connector [E] to CN510 7P white connector [F] to CN507

19. For 240 volt areas only: Remove the rear cover of the LCT (5 screws), disconnect the 220V con-

nector [G] and connect the 240V connector [H] as shown, and then reinstall the rear cover of the LCT.

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21 April 1989

20. Reinstall the rear cover of the copier.

21. Apply the caution decal [A] on the copier rear cover.

22. Plug in the machine and turn on the copier main switch.

23. Select Feed station priority at power on, using SP#20. Data 0 –> LCT priority

Data 1 –> Cassette from 1st feed station

24. Check the LCT operation and fill out the New Equipment Condition

Report.

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+ 32 hidden pages