C-320/C-320C and C-380/C-380C Technical Service Manual

POWERSHREDTechnical Service Manual

for Models

C-320/C-320C

C-380/C-380C

June 2009

Revised 06/09 C-320/C-320C and C-380/C-380C Technical Service Manual �

Table of Contents

Introduction.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 1Models C-320 and C-380. .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 1Models C-320C and C-380C. .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 2

Safety . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 2General Maintenance . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 3

External Cleaning . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 3Internal Cleaning.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 3Inspection .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 3Control Panel .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 4Lubrication . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 4

Operation/Control Panel .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 4Troubleshooting . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 5

Paper Feed Problems . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 5Electrical Problems .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 6Mechanical Problems . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. 9

Troubleshooting Flowcharts . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 10Flowchart A . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 11Flowchart B . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 12Flowchart C . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 13Flowchart D . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 14Flowchart E . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 15

Tools and Supplies . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 16Cabinet and Housing.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 17

Replace Caster Assembly .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 17Remove Housing Cover . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 18Remove/Replace PC Board . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 19

Mechanical Assemblies .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 20Remove Cutting Assembly and Motor from Cabinet .. . .. . .. . .. . .. . .. . .. . . 20Remove Gearbox . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 21Remove Motor . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 22

Electrical Assemblies.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 23Replace Capacitor . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 23Replace Power Receptacle . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 24Replace Basket Full Sensor . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 25Replace Door Ajar Switch .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 26Remove/Replace Operator Panel Board . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 27Replace Operator Panel Switches . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 27Current Limit Adjustment . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 28Indicator LEDs . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 30Replace Auto Start Sensor.. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . . 30

Wiring Diagram . . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . .. . 31

C-320/C-320C and C-380/C-380C Technical Service Manual Revised 06/09 ��

Notes


Introduct�on

This Technical Service Manual contains the service and repair procedures for Fellowes office shredders, Models C-320, C-320C, C-380, and C-380C. The manual provides maintenance procedures, a list of required tools, and a troubleshooting guide with flowcharts. In addition, the manual contains a wiring diagram and an illustrated parts list for each shredder.

Use the troubleshooting guide for help in identifying a specific problem. Then, turn to the appropriate section in the manual for instructions.

Follow the service procedures carefully. Always note the location, number, color, and position of parts and wires before removing them so that they can be reassembled correctly. If there are no specific instructions for reassembling an item, simply reverse the disassembly procedure

From the service and repair perspective, all four models are similar, except for the cutting assemblies. The C-320 and C-380 are strip-cut shredders. The C-320C, and C-380C are confetti-cut shredders. The C-320 and C-320C shredders work with standard letter and A size paper. The C-380 and C-380C shredders can handle a maximum paper width of 15 inches (38.0 cm). All four shredders are sheet-fed.

Models C-320 and C-380

Models C-320 and C-380 are strip-cut shredders with these characteristics:

Shred size of 7/32 inch (5.8 mm)

Optimum paper cutting capacity of 26-28 sheets (5.8 mm shred size), letter or A size, 20 lb. paper.

Maximum paper width of 10 inches (25.4 cm) for the C-320 and 15 inches (38.0 cm) for the C-380.

Recommended daily paper capacity of 14,000 sheets.

Recommended daily CD or DVD capacity is 150. Recommended daily credit card capacity is 150.

C-320/C-320C and C-380/C-380C Technical Service Manual Revised 06/09 2

Models C-320C and C-380C

Models C-320C and C-380C are confetti-cut shredders with these characteristics:

Shred size of 5/32 x 1-1/8 inch (3.9 x 30 mm)

Optimum cutting capacity 14-16 sheets of letter or A size, 20 lb. paper.

Maximum paper width up to 10 inches (25.4 cm) wide for the C-320C, and up to 15 inches (28.0 cm) for the C-380C.

Recommended daily paper capacity is 7000 sheets.

Recommended daily CD or DVD capacity is 150. Recommended daily credit card capacity is 150.

SafetyWhen servicing a shredder, observe the following safety precautions:

Never put a hand, fingers, or foreign objects into the paper entry slot or throat.

Keep all loose articles of clothing, ties, jewelry, long hair, or other loose objects away from the paper entry slot.

Always turn off and unplug the power cord at the wall outlet before doing any work on a shredder.

Use only the specified replacement parts. See the Parts Manual.

Wall MountingEach shredder includes a wall mounting kit (PN 31742). This kit is used to secure the shredder to a wall to comply with UL 60950 stability requirements. The wall mounting kit contains a spacer that allows the shredder to be mounted slightly away from the wall for proper ventilation.

Revised 06/09 C-320/C-320C and C-380/C-380C Technical Service Manual 3

General Ma�ntenanceThe shredders are designed to perform consistently with a minimum amount of maintenance. This section contains recommendations for external and internal cleaning, inspection, and lubrication.

External Clean�ng

Clean the exterior of the shredder with a soft cloth. Moisten the cloth with a mild solution of detergent (such as dish-washing liquid) and warm water. Use detergent sparingly to avoid contact with electrical parts.

Do not use flammable synthetic oil, petroleum-based products, or aerosol lubricants of any kind. Do not use chemical cleaners, solvents, or aerosol sprays to clean the exterior of the shredder.

Internal Clean�ng

The shredder does not require periodic internal cleaning. However, when the shredder is being serviced perform these maintenance tasks:

Remove any paper strips or pieces that may have collected around the cutting assembly.

If lubricated parts are dusty, wipe away the dust with a soft cloth.

Use a small brush or vacuum to remove dust from the non-lubricated surfaces such as the motor, cutting assembly, housing, and wiring.

Do not use chemical cleaners, solvents, or aerosol sprays to clean the interior of the shredder.

Inspect�on

When the shredder is being serviced, visually inspect it for defects such as loose screws, loose terminals and connectors, and any other problems you notice.

Correct any defects and test the shredder before returning it to the customer.

C-320/C-320C and C-380/C-380C Technical Service Manual Revised 06/09 �

Lubr�cat�on

Only confetti-cut shredders (C-320C and C-380C) require lubrication to ensure proper operation. If used at or near capacity, the machines should be oiled every time the basket is emptied, when it becomes noisy, and when it is serviced. Use Fellowes Powershred Lubricant (#35250) or other non-aerosol vegetable-based oil in a long-nozzle container. Do not use flammable synthetic oil, petroleum-based products, or aerosol lubricants of any kind.

1 Turn off the shredder.

2 Lift the paper entry flap and apply oil over the full width of the cutting cylinders through the paper entry slot.

3 Press and hold the Manual Forward button for at least 3 seconds.

4 Press and hold the Reverse button for at least 3 seconds.

5 Repeat the forward/reverse sequence 3 or more times.

Operat�on/Control PanelThe control panel is located on the shredder cover. The panel contains switches and buttons, indicator LEDs, and a Ready light.

Control Panel Switches

I Automatic Turns on the auto start sensor and the green Ready light.

O Off Turns off the auto start sensor and the green Ready light.

R Reverse Runs the shredder in reverse mode. Press and hold to activate.

Manual Forward Button Runs shredder when the button is held down.

Indicator LEDs

Ready Light (Green) Shredder is in auto start mode.

Door Ajar (Red) Waste basket door is open.

Basket Full (Red) Waste basket is full or paper has collected under the cutting cylinders.

Paper Jam (Red) Shredder is jammed (e.g., paper capacity exceeded).

Control Panel


Troubleshoot�ngTroubleshooting the shredder begins with checking the machine for possible faults. Possible causes for machine malfunctions include:

Paper feed problems

Electrical problems

Mechanical problems

Paper Feed Problems

Paper jams and a full wastebasket are two common problems. Indicator LEDs on the shredder cover help to identify these problems. Both of these are easy to solve. In addition, birdnesting, a build up of paper shreds along the underside of the cutting assembly, can be a problem on confetti-cut shredders.

CAUTION! Never attempt to force jammed material through the shredder.

If the paper jam light is on, follow these steps until the light turns off:

1 Unplug the shredder.

2 Check the wastebasket and empty if full. Replace the basket and make sure the door ajar switch is fully engaged.

3 Plug in the shredder. Press and hold the reverse (R) switch to back paper out of the paper entry slot. Try pulling gently on the paper to remove it from the shredder.

4 Alternate between forward and reverse, as needed:

a Press and hold the Manual Forward button for a few seconds.

b Press and hold the Reverse switch for a few seconds.

c Continue alternating between forward and reverse until the jam clears.

CAUTION! The shredder may be damaged if you alternate too rapidly between forward and reverse.

C-320/C-320C and C-380/C-380C Technical Service Manual Revised 06/09 �

To clear a buildup of paper shreds from the underside of the cutting assembly (also called birdnesting):

1 Unplug the shredder.

2 Check the wastebasket and empty if full. Replace the basket and make sure the paper full switch is engaged fully.

3 Plug in the shredder.

4 Alternate between forward and reverse to clear the birdnest:

a Press and hold the Manual Forward button for a few seconds.

b Press and hold the Reverse (R) switch in for a few seconds.

c Continue alternating between forward and reverse a few times.

5 Feed the maximum cutting capacity (e.g., 14-16 sheets of 20 of paper for the C-320C shredder), at one time if needed to clear the birdnest.

Electr�cal Problems

The most common electrical problems result from an opened door, loose wires, a defective PC board, LED PC board, control panel, and/or bin full sensors.

Verify the On/Off disconnect switch (located on the back of the shredder) is in the On (I) position.

Check the basket to make sure it is not overfilled and is properly positioned in the cabinet. Press the Automatic (I) switch, then press the Manual Forward button to start the shredding operation.

Check the bin full sensors by first verifying they are clean (no paper dust). If the bin full sensors are clean, the waste basket is not full, and the bin full LED remains illuminated, the fault will lie with either the bin full sensors or the main PC board.

If the PC board is defective, the shredder may not run at all. Other indicators that the PC board is defective might be if the shredder runs in reverse but not forward, the LED lights do not turn off, the shredder runs on, or the bin full lights signal when the bin is empty.


To test for a faulty main PC board:

1 Plug the shredder into the power source. If the shredder has a disconnect switch, flip it to the ON position.

2 Make sure the shredder is turned OFF at the control panel.

3 Remove the housing cover.

4 Disconnect the LED PC board from the main PC board.

5 Locate the pins where the control panel (keypad) is plugged in, and number the pins 1 through 9 with 1 on the left (motor) side.

6 Follow this sequence to test the main PC board:

a Jump pins 1 & 8 Cutters should rotate forward continuously.

b Jump pins 1 & 9 Cutters should rotate forward (only while pins are jumped).

c Jump pins 1 & 7 Shredder should turn off (no LEDS are illuminated.

d Jump pins 1 & 6 Cutters should rotate in reverse.

To test for a faulty LED PC board:

1 Plug the shredder into the power source. If the shredder has a disconnect switch, flip it to the ON position.

2 Make sure the shredder is turned OFF at the control panel.

3 Remove the housing cover.

4 Disconnect the control panel (keypad) from the LED PC board.


5 Locate the pins where the control panel (keypad) is plugged in and numbering the pins 1 through 5, follow this sequence to test the LED PC board:

a Jump pins 1 & 2 Cutters should rotate forward.

b Jump pins 1 & 3 Auto-mode: the green LED on the left-hand corner of the PC board should light indicating the shredder is on.

c Jump pins 1 & 4 Shredder should turn off (no icons are illuminated).

d Jump pins 1 & 5 Cutters should rotate in reverse.

To test for a faulty control panel PC board:

Test for a faulty main PC board and/or LED PC board. If both are functional and the problem persists, then the control panel PC board is faulty.

Occasionally the capacitor may be defective. Typical problems caused by a defective capacitor are that the motor runs but with no power.


Mechan�cal Problems

Mechanical problems can often be identified by listening to the sound of the machine when it is operating and observing whether the paper cutting capacity drops.

If a confetti-cut machine is making excessive noise, it may need to be lubricated. Try oiling the cutting shafts. To do this, apply the lubricating oil through the paper entry slot on the cover. Run the cutting system forward and backward several times without feeding paper. Then feed paper through the shredder. See the Lubrication instructions in the General Maintenance section of this manual for additional instructions.

If these simple solutions do not solve the problem, use the troubleshooting flowcharts to help identify and solve the problem.

C-320/C-320C and C-380/C-380C Technical Service Manual Revised 06/09 �0

Troubleshoot�ng Flowcharts

This section includes four flowcharts that begin with a typical shredder problem.

Flowchart A Shredder does not start

Flowchart B Indicator lights

Flowchart C Shredder runs but makes noise

Flowchart D Paper cutting problems

Flowchart E Frequent paper jams

The flowcharts are designed to provide you with a starting point for identifying, isolating, and repairing problems.

Revised 06/09 C-320/C-320C and C-380/C-380C Technical Service Manual ��

Flowchart A

Shredder does not start

Check switchfor loose wires

Connect anyloose wires

Make sureshredder is

connected topower supply

Make surepower is

available atwall outlet

Check for looseinternal electrical

connections

Procedure:Replace

Operator PanelBoard

Replace powercord, if defective

Replace poweroutlet, ifdefective

Procedure:Replace Power

Outlet

Power System

Check sensors,clean if

necessary

Check for looseor defective

wires

Replace sensor,if defective

Procedure:Replace

Operator PanelBoard

AutoOn/Reverse

Switch

Paper EntrySensor

Make suredisconnectswitch is inOn Position


Flowchart B

Indicator lights

Emptywastebasket, if

needed

Clean bin fullsensors

Open/close door;listen for switchsound; check

light

Procedure:Replace DoorAjar Switch

Replace basketfull sensors, if

needed

Door Ajar lightis on

Press reverse &manual forwardswitches to clear

jam

Allow motor tocool, then restart

shredder

Basket Full lightis on

Paper Jam lightis on

Replace operatorpanel PC board

Procedure:Replace Basket

Full Sensor

Procedure:Replace

Operator PanelPC Board

Is the lightstill on?

Yes

Revised 06/09 C-320/C-320C and C-380/C-380C Technical Service Manual �3

Flowchart C

Shredder runs but makes noise

A motor bearingmay be defective

Procedure:Replace Motor

Cutting cylindersmay need oil

Lubricate cuttingcylinders

Cutting cylindermay be

damaged

Squeakingnoise?

Turn onshredder ;

listen to noise

Did SqueakingStop?

Stripping devicesmay be defective

Procedure:Replace

StrippingDevices

Squealingnoise?

Clunking/Grindingnoise?

Cuttingassembly gear

may bedamaged

Procedure:RemoveGearbox

Examine gears;replace as

needed

Procedure:Repair Cutting

Assembly

No

Yes Yes

No No

Yes


Flowchart D

Yes

Paper Cutting Problems

Check cuttingcylinder timing*

Procedure: Adjust Timing

Unable to cutpaper

Go toFlowchart E

Cuts paper, butnot well

Frequent jams

Check formechanicalproblems

Motor gear isstripped ordamaged

Drive gears arestripped ordamaged

Replace gearsas needed

Replace motor ifdamaged

Procedure:RemoveGearbox

Procedure:Replace Motor

Check papercuts are: edgesperforated, notloose? Wavy or

fish bone?

*Applies to confetti-cut shredders only


Flowchart E

Frequent Paper Jams

Confetti CutShredders

Jams occur atrated or if under

fed

Jams occur ifover fed

Reduce quantityof paper fed

Check currentlimit adjustment

setting

Procedure:Set Current

LimitAdjustment*

If slippage,replace cutting

cylinder

If alignment,adjust timing

Procedure:Adjust Cutting

Cylinder Timing

Procedure:Replace Cutting

Cylinder

Check cuttingcylinder teeth for

slippage &alignment

Run shredderusing rated

paper quantities

*Current limit is factory preset on original pc board.Applies to replacement pc boards only.


Tools and Suppl�es

The following tools and supplies are required to properly service the Fellowes shredders, Models C-320, C-320C, C-380, and C-380C.

Screwdrivers Phillips screwdrivers Flat blade screwdriver

Pliers Long nose pliers

Wrenches/Sockets Socket wrenches w/extension

Hammers Rubber mallet Plastic-end hammer

Miscellaneous Gear puller

Supplies Gear grease Cleaning solvent Powershred lubricant Gloves (optional)


Cab�net and Hous�ngThe cabinet consists of the cabinet with four casters, a housing cover, and a wastebasket drawer. The interior of the cabinet has a shelf that supports the mechanical and electrical components. A housing cover fits on the cabinet.

The Automatic, Off, and Reverse switches; the Manual Forward button; and the indicator LEDs, and Ready light are located on the housing cover. Paper is fed through the paper entry slot (throat) on the cover. CDs, DVDs, and credit cards are fed through the CD entry slot.

Replace Caster Assembly

The caster assembly screws into a threaded socket on the bottom of the cabinet.

1 Remove the wastebasket.

2 Select a suitable work surface and put a blanket, mat, or other cover down to prevent damage to the shredder.

3 Lay the shredder on its side on the blanket.

4 Turn the nut counterclockwise to remove the caster from the bottom of the cabinet.

5 Replace the old caster with a new one.

DO THIS FIRST

Unplug the Shredder

TOOLS

Wrench

C-320 & C-320C Cabinet

housing cover

indicator LEDs

CD entry slot

cabinet door

casters (4)wastebasket

operator panel

paper entry slot (throat)

disconnect switch

boltnut

caster


Remove Hous�ng Cover

Screws hold the housing cover to the cabinet. A plastic cable connects the Operator Panel PC board located on the housing cover to the main PC board in the cabinet. Remove the cover gently, so that this cable is not damaged.

To remove the housing from the cabinet:

1 Open the door and remove the wastebasket.

2 Remove the 3 screws on the C-320/C-320C and the 5 screws on the C-380/C-380C that hold the cover to the underside of the lip at the front of cabinet.

3 Remove the 3 screws that hold the cover to the rear of the cabinet.

4 Lift up the CD feed slot on the top of the cabinet and remove the 2 screws that hold the cover to the metal guards that protect the cutting assembly.

5 Grip the housing cover on both sides, then gently lift the cover off the cabinet. Be careful not to damage the plastic cable.

6 Disconnect the cable from the main PC board and set the cover aside.

DO THIS FIRST

Unplug the Shredder

TOOLS

Phillips screwdriver

cable (connects to main PC board in cabinet)

C-320/C-320C Housing Cover

operator panel (see page 4 for details)

CD/DVD/floppy disk/credit card entry slot on safety flap

paper entry slothousing cover insert panel

safety flap


Remove/Replace PC Board

The PC board is located at the right side of the cabinet shelf. It rests on a support base that is attached to the cabinet shelf. Some of the wires leading to various components are hard-wired to the board, others such as the basket full sensor and the operator panel cable, can be disconnected from the board or the component.

If a component that is hard wired to the board fails, the entire PC board must be replaced. Before replacing the PC board, disconnect the wires (that are not hard-wired) from the PC board, components, and sensors.

Note: Make sure the shredder is unplugged from the electrical outlet.

1 Disconnect the 2 power wires (red and black) from the disconnect switch (see wiring diagram).

2 Disconnect the 3 motor wires from the PC board.

3 Disconnect the black and blue wire tabs from the capacitor and remove them from the wire guides.

4 Disconnect the basket full sensor wire connector from the PC board.

5 Remove the 4 screws that hold the PC board to the cabinet shelf, and remove the PC board.

6 Set the PC board aside. Be careful as some of the wires are hard wired to the PC board. Do not break these connections if the board is not being replaced.

DO THIS FIRST

Remove Housing Cover

TOOLS

Long nose pliers Phillips screwdriver

operator panel cable connector

capacitor connectors (hardwired)

motor wire connectors

basket full sensor connectors

C-320/C-320C PC board

door ajar switch connectors (hardwired)

power cord connectors

current limit adjustment screw


Mechan�cal Assembl�esThe motor and the cutting assembly are the major mechanical assemblies in the shredder.

Remove Cutt�ng Assembly and Motor from Cab�net

The gearbox protects the gears and supports the cutting assembly and motor. The bearing plates support the cutting assembly. Consult the wiring diagrams as needed. Note and label each wire as you disconnect it.

CAUTION! The cutting assembly is heavy. Make sure a suitable work surface is available before removing the cutting assembly.

To remove the cutting assembly and motor:

1 Remove the screw that holds the motor ground wire (yellow/green) to the cabinet shelf.

2 Remove the 3 motor wire tabs from the PC board.

3 Remove the 2 bolts and washers that hold the motor to the cabinet shelf.

4 Remove the 4 bolts and washers that hold the cutting assembly bearing plates to the cabinet shelf.

5 Remove the 2 screws that hold the door ajar switch to the cabinet to access a bearing plate bolt, if needed.

6 Lift the cutting assembly and motor up until it clears the supports on the cabinet base and place it on a suitable work surface. Be careful not to damage the motor wires.

left bearing plate

right bearing plate

cutting assembly

gearbox and gears

motor

Cutting Assembly in Cabinet

DO THIS FIRST

Remove PC Board

TOOLS

Socket wrench (14 mm) Long nose pliers Phillips screwdriver

Revised 06/09 C-320/C-320C and C-380/C-380C Technical Service Manual 2�

Remove Gearbox

The gear assemblies are the same for the C-320/C-320C and the C-380/C-380C shredders. A large white plastic gear fits over the metal drive gear which is attached to another large white plastic gear. A deep metal gear fits on the large cutting cylinder shaft and a smaller metal gear fits on the small cutting cylinder shaft. The motor also has a gear shaft.

To remove the cutting assembly gearbox:

1 Remove the 6 screws and washers that hold the gearbox to the left bearing plate.

2 Pull the gearbox away and up from the bearing plate.

3 Remove the outermost white plastic gear.

4 Remove the other white plastic gear and the metal gears that fit in it.

Note: If you are unable to protect the bin full flap, remove it from the bearing plates.

DO THIS FIRST

Remove Cutting Assembly and Motor from Cabinet

TOOLS

Phillips screwdriver Gear puller

snap ring for hex distance rod

left bearing plate

2nd stage gear

small cutting shaft gear gear pins

1st stage gear assembly (consists of 2 metal and 1 large plastic gear)

gearbox

journal bearing insert & bearings (attach to bearing plate)

large cutting shaft gear


Remove Motor

The motor is supplied as a complete assembly. If any part of the motor is defective, the entire motor must be replaced.

To remove the motor:

1 Make sure the large plastic gear that meshes with the motor drive shaft is removed.

2 Remove the 4 bolts and locking washers that hold the motor to the left bearing plate.

3 Support the bearing plate and cutting assembly as you remove the motor.

DO THIS FIRST

Remove Gearbox

TOOLS


motor drive shaft

motor mounting bracket

motor wires

Revised 06/09 C-320/C-320C and C-380/C-380C Technical Service Manual 23

Electr�cal Assembl�es

Replace Capac�tor

Two screws hold the capacitor to the cabinet shelf. Two wires (black and blue) from the PC board connect to the terminals on the top of the capacitor.

Typical problems that may be caused by a defective capacitor are that the motor runs but with no power.

CAUTION! To prevent electrical shock, make sure the shredder is disconnected from the power source.

To replace the capacitor:

1 Disconnect the 2 wire tabs that connect the old capacitor to the PC board. Note the color and location of these wires.

Note: Be careful not to damage the PC board or the wires connected to it.

2 Remove the 2 screws that hold the capacitor to the cabinet shelf. Remove the old capacitor.

3 Attach the new capacitor to the cabinet shelf with the screws.

4 Connect the 2 wire tabs from the PC board to the capacitor.

wire connectors

Capacitor

DO THIS FIRST

Remove Cutting Assembly and Motor

TOOLS


C-320/C-320C and C-380/C-380C Technical Service Manual Revised 06/09 2�

Replace Power Receptacle

A receptacle for the power cord is located on the back of the cabinet. The receptacle is held in position by a support bracket that attaches to the cabinet shelf.

To replace the power outlet:

1 Make sure the power cord, disconnect switch, and ground wires are disconnected from the connectors on the receptacle.

2 Remove the 2 screws that hold the support bracket to the cabinet shelf.

3 Push the receptacle through the opening at the back of the cabinet.

4 Remove the 2 screws that hold the receptacle to the support bracket.

5 Place the new receptacle in the support bracket.

6 Place the receptacle through the opening in the cabinet and attach the support bracket to the cabinet shelf.

7 Reconnect the wires.

DO THIS FIRST


TOOLS


Power Cord Assembly

power cord support bracket

power cord receptacle

ground wire

connectorpc board wire connectors


DO THIS FIRST

Remove the Cutting Assembly and Motor

TOOLS


Replace Basket Full Sensor

The motor will stop if the wastebasket is full. The shredder will not operate until the excess paper is cleared.

The basket full sensor is an electric eye that monitors the paper level in the basket. The sensor consists of a transmitter and receiver LEDs. On the C-320 and C-380, the LEDs fit in special 2-piece brackets that are attached to the left and right sides of the underside of the cabinet shelf. On the C-320C and C-380C, the LEDs fit into a bracket that is inserted into an opening on the cabinet shelf. The wires from the sensor connect to the PC board. The sensor connects to the Basket Full indicator LEDs through the PC board. (See the wiring diagram.)

To replace the C-320 and C-380 basket full sensor:

1 Disconnect the basket full sensor wire connector from the PC board. See the wiring diagram.

2 Remove the screw that holds each basket full sensor bracket to the underside of the cabinet shelf. Note the color of each LED.

3 Separate the 2 pieces of the bracket and remove the LED.

4 Thread a new transmitter or receiver LED through the opening in the cabinet shelf and place the LED in one piece of the brackets. Reunite the 2 pieces of the bracket.

5 Place the bracket in position on the bottom of the cabinet shelf making sure the 2 plastic tabs on each bracket fit in the corresponding holes in the cabinet shelf.

6 Reattach the brackets to the cabinet shelf. Make sure the two LEDs are pointing at each other and adjust, if needed.

7 Plug the new basket full sensor wire connector into the PC board.

8 Place the sensor wires in the wire guides.

2-piece bracket attaches to the underside of the cabinet shelf

transmitter or receiver LED

wire connects to PC board

C-320 & C-380 Basket Full Sensor

C-320/C-320C and C-380/C-380C Technical Service Manual Revised 06/09 2�

To replace the C-320C and C-380C basket full sensor:

1 Disconnect the basket full sensor wire connector from the PC board. See the wiring diagram.

2 Remove the 2 screws that hold each basket full sensor bracket to the cabinet shelf.

3 Remove the LED from each bracket. Note the color of each LED.

4 Place the new LEDs in the brackets.

5 Insert each bracket through the opening in the ridge under the cutting assembly on the cabinet shelf.

6 Reattach the brackets to the cabinet shelf. Make sure the two LEDs are pointing at each other and adjust, if needed.

7 Plug the new basket full sensor wire connector into the PC board.

8 Place the sensor wires in the wire guides.

Replace Door Ajar Sw�tch

A plastic plug on the cabinet door fits into an opening on the front of the cabinet. The plug makes contact with the door ajar switch. If the switch is working properly, you will hear a clicking sound from the switch when the door is opened and closed. If the switch is not working, the door ajar troubleshooting light will activate and the motor will not start until the door is closed properly.

Two screws hold the switch to a support on the cabinet shelf. Three wires are hard-wired to PC board and to the switch. The entire PC board must be replaced if this switch is defective (see the wiring diagrams).

To replace the door ajar switch:

1 Place the new switch in position on the ledge on the cabinet housing.

2 Replace the 2 screws that hold the switch to the cabinet. Make sure the blade on the switch makes contact with the plastic plug on the door. Reposition the switch if needed.

3 Place the wires securely in the wire guides along the cabinet shelf.

DO THIS FIRST

Remove/Replace the PC Board

TOOLS


C-320C/C-380C Basket Full Senor Bracket

Door ajar switch


DO THIS FIRST


TOOLS

Phillips screwdriver Long nose pliers

Housing Cover

cable connects operator panel board to the PC board

operator panel

Remove/Replace Operator Panel Board

The PC board on the operator panel controls the auto start LEDs, the operator panel switches, and the indicator LEDs and ready light. The operator panel board connects via a large cable to the PC board.

To replace the operator panel board:

1 Remove the 4 screws that hold the 2 cable guide brackets to the housing cover.

2 Remove the 2 screws that hold the supports for the auto start LEDs. Note the color of each lamp. Remove the sensor wires from the wire guides.

3 Remove the 2 screws that hold the operator panel board to the cover.

4 Disconnect the operator panel switch cable from the operator panel board.

5 Connect the operator panel switch cable to the new operator panel board.

6 Put the new board in position and replace the 2 screws that hold the board to the cover.

7 Put the auto start LEDs in the openings along the paper entry slot and replace the LED support. Put the wires in the wire guides.

8 Put the large cable in the cable guides and replace the cable guide brackets.

Replace Operator Panel Sw�tches

The operator panel switches (Reverse, Off, Automatic, and Manual Forward) are located in the housing cover insert and connect via a cable to the operator panel PC board. If the cable or a switch is defective, replace the housing cover insert.

To replace the housing cover insert:

1 Remove the 8 screws that hold the cover insert to the cover.

2 Lift the insert up and away from the cover.

3 Put the new insert in place and secure it to the housing cover.

4 Connect the operator panel switch cable to the operator panel board.


Current L�m�t Adjustment

The current limit adjustment is preset at the factory. When a PC board is replaced, this setting may need to be checked and adjusted. The current limit adjustment screw is located on the PC board. When adjusted properly, feeding more than the maximum recommended quantity of paper may cause a paper jam.

Table 1: Minimum/Maximum Jam Quantity Sheet (20 lb, letter) Capacity

Shredder Rated Minimum Maximum

C-320 strip cut 28 29 30C-320C confetti-cut 16 17 18C-380 strip-cut 28 29 30C-380C confetti-cut 16 17 18

To check and adjust the current limit setting:

1 Attempt to shred the minimum jam quantity listed on Table 1.

a If the machine shreds without jamming, turn the current limit adjustment screw on the PC board clockwise. Repeat step 1.

b If the machine jams (the red paper jam light goes on and the shredder runs in reverse for one second to clear the jam) go to step 2.

Note: Turn the current limit adjustment screw counterclockwise to increase the capacity. Turn it clockwise to decrease the capacity.

Note: Based on Table 1, the paper jam should occur after shredding 1/2 to 3/4 of the minimum jam quantity.

2 Confirm the adjustment by shredding the rated number of sheets listed on Table 1.

a If the shredder jams, turn the screw counterclockwise and retest with the rated number of sheets.

b If the shredder does not jam, feed the minimum number of sheets to make sure it will not cause a jam at the minimum setting.

3 When the current limit adjustment screw is set properly, place a drop of Loctite thread locking liquid on the screw to secure the setting.

DO THIS FIRST

Replace the PC Board

TOOLS

Flat blade screwdriver Loctite Tape


4 Reassemble the shredder and test the basic shredder functions, including:

a Make sure the Ready Light (green) shines brightly when the power is on. This indicates the correct LED alignment between the PC board and the cover.

b Open the cabinet door to make sure the Door Ajar light is working.

c Open the cabinet door and cover the bin full sensors with a piece of masking or non-clear tape. Close the door, turn on the shredder, and wait about 8 seconds for the bin full sensor to turn on. When the bin full sensor light turns on, remove the tape from the sensors.

d Press the Manual Forward button to make sure it is working.

e Place a sheet of paper in the paper entry slot to make sure the auto-start feature is working.

f Press and hold the Reverse button to make sure it is working.


Ind�cator LEDs

Three indicator LEDs (door ajar, basket full, and auto start) fit into supports attached to the operator panel PC board. Another LED (ready) indicator is mounted directly on the board. If an indicator LED or the ready LED fails, replace the operator panel PC board. (See Remove/Replace the Operator Panel PC Board and the wiring diagram.)

Replace Auto Start Sensor

The auto start sensor is a light-activated electric eye. It has a transmitter and a receiver LED that fit into openings on opposite sides of the paper entry slot. Both sensors are hard-wired to the operator panel PC board. If the paper feed sensor fails, the board must be replaced.

When inserting the new auto start sensors make sure the transmitter and receiver are in the same position. Then make sure the LEDs are properly aligned so that they will activate the shredder when paper is put in the paper feed slot.

To replace the paper jam sensor:

1 Place the new transmitter and receiver LEDs in the holders located on either side of the paper feed slot.

2 Place a support bracket over each LED and tighten the screw to secure the bracket.

3 Secure the sensor wires in the wire guides located along the paper entry slot.

DO THIS FIRST

Remove/Replace the Operator Panel PC Board

TOOLS


Auto Start Sensors


power cord

MOTORreceptacle

door ajar switch

PC BOARD

paper feed sensor

operator panel cable

operator panel PC board

basket full

CAPACITORblue

black

black

red

yellowblack

red

green/yellow

white black

brown

blue

white

blue

cable to operator panel

black

red

black

green

current limit adjustment screw

power on/off

Wiring Diagram Models C-320, C-320C, C-380, C-380C

1789 Norwood Avenue Itasca, IL 60143-998

telephone (630) 893-1600

fax (630) 893-1648 1-800-955-3344

C-320/C-320C and C-380/C-380C Technical Service Manual

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