clx-317x series training feb. 2008 clx-317x series training feb. 2008 cru technical notes

CLX-317x Series TrainingFeb. 2008

CLX-317x Series TrainingFeb. 2008

CRU Technical Notes

ObjectivesObjectives

Understanding and building the ability to deal with

I. Component and layout of OPC-unit / dev-unit

II. Operations of each component and unit

III. Troubleshooting: possible problems in the field and

solution to each problem

I. Consumable Part

For the best image quality, replace cartridges within appropriate time

Capacity : (additional) 1,000 images (Y,M,C) & 1,500 (K) images

(initial w/ set) 700 images (Y,M,C) & 1,000 (K) images

Black Toner Cartridge

Front Cover

CRUM

Ⅱ. Composition & Function

High voltage contact point (Supply Roller)

Cyan Toner Cartridge

High voltage contact point (Developing Roller)

Magenta Toner Cartridge

Yellow Toner Cartridge

Be careful not to damage dev. roller while plug- in & out of toner cartridge

1. Toner Cartridge


Spacer DR(Gap-Ring)

Developing RollerSus. Blade

High voltage contact point (Developing Roller)

High voltage contact point (Supply Roller)

Development Method : Non-magnetic one component type

Toner type : non magnetic one component pulverized toner

Capacity : 1,000(Y,M,C) / 1,500(K) Sheets (N/N, Simplex, ISO/IEC 19798 standard pages)

1. Toner Cartridge


Gear DR

Gear IDLEGear AgitatorGear Paddle

Gear SR

Gear train : Torque transferred from SET drive gear to DR gear.

1. Toner Cartridge


Developing roller

Toner Slider

Supply roller

Toner AgitatorShaft Paddle wire

Toner layer control : toner layer thickness on dev. roller controlled by SUS.

blade’s trail-edge

Toner Supply Type : toner slider and supply roller

Dev. gap control : gap ring located at both sides of dev. roller

1. Toner Cartridge

2. OPC Unit Layout

Life : Print over 35,000 Images

OPC(Organic Photo-Conductor)

OPC Cleaning: Cleaning Blade (urethane)


OPC(Organic Photo-Conductor)

OPC Drum

Shaft OPC Handle OPC

Cleaning blade

Charger Roller

Slider Waste OPC

Shaft Paddle OPC

Cleaning Roller

Erager Lamp


2. OPC Unit Layout

Error List

• Invalid toner– Invalid Yellow (M/C/K) toner kit– Mismatch of model name, supplier ID, company name and etc.

• Not install– Toner cartridge (Y/M/C/K) is not installed

• Service call error– Fuser Low (Over) heat error– LSU error – Transfer belt error – Dev. Home error– Motor Lock error


1. Replace toner cartridge and retest.

2. Replace OPC cartridge and retest.

3. Replace ITB cartridge and retest.

4. Replace OPC or ITB and retest.

1. Vertical Black Line and Band

Description: 1. Straight thin black vertical lines occur on the printout 2. Dark black vertical bands occurs on the printout

Check and Cause Solution

1. Damaged development roller, deformed doctor-blade : In case of one color

2. Scratched / contaminated surface of the charging roller in OPC set : all colors layered

3. Damaged / contaminated ITB (Image Transfer Belt) : waste toner color

4. Damaged / deformed cleaning blade (OPC/ITB) : waste toner color

Ⅳ. Printing Problems &Solution

2. Vertical White Line

Description: White vertical lines in the image.

Check and Cause

1. Clean the LSU window with recommended cleaner (IPA).

2. If foreign matter is inside LSU, replace LSU unit.

3. Replace toner cartridge.

4. Replace ITB unit.

5. Check the fuser ribs corresponding to white spot. Remove foreign matter or replace parts.

Solution

1. Contamination of the window or internal lenses of LSU : in case of all colors

2. Foreign matter in toner cartridge : one color

3. If the fuser is damaged, white spots occur periodically : all colors

4. ITB cleaning blade could touch with ITB wiping off a part of image : all colors


3. Horizontal Dark Band or White Band

Description: Dark or blurry horizontal stripes occur on the printout periodically

Check and Cause

1. Clean all high voltage terminals in the cartridge and the frame of the printer.

2. See the periodic table in the left to identify what sort of unit or component causes the problem.

Replace the relevant unit.

Solution

1. Bad contacts between the imaging unit and high voltage terminals.

2. The rollers in the toner cartridge may be contaminated.

1) Charge roller – 37.7 mm2) Supply roller – 32.8 mm3) Develop roller – 26 mm 4) Transfer roller(T1) – 43.8 mm 5) Transfer roller(T2) – 55.2 mm 6) OPC Drum – 188.5 mm7) Fusier – 88.4 mm


4. Black / White Spot

Description: 1. Dark or blurry spots occur periodically in the printing 2. White spots occur periodically in the printing

Check and Cause

See the periodic table in the left to identify what sort of unit or component causes the problem. Replace the relevant unit.

Solution

Foreign matter sticking or contamination on toner cartridge, OPC drum, ITB unit, or fuser.

1) Charge roller – 37.7 mm2) Supply roller – 32.8 mm3) Develop roller – 26 mm 4) Transfer roller(T1) – 43.8 mm 5) Transfer roller(T2) – 55.2 mm 6) OPC Drum – 188.5 mm7) Fusier – 88.4 mm


5. Dark Image or Black

Description: The printed image is dark

Check and Cause

Check electric contacts to the HVPS

Solution

1. No charging voltage in the engine board.

2. Regardless of printable image, composite black image is printed. There could be a problem in charging process

3. In the case, it could cause wrap jam in the fuser


6. Uneven Density

Description: Print Density is uneven between left and right

Check and Cause

1. Check if transfer roller and connected parts are properly installed

2. Replace ITB unit

3. Replace toner cartridge

Solution

1. The pressure on the transfer roller by right and left spring is not even: springs are damaged, transfer roller is improperly installed, or transfer roller’s bushing or holders are damaged.

2. Toner cartridge has been expired.

3. Toner level is too low in the development cartridge.


7. Ghost

Description: Ghosting occurs in the interval of 26 mm or 188.5mm

Check and Cause

1. Check electric contacts to HVPS. Replace HVPS board


3. Replace OPC unit

Solution

1. Bad contacts by contamination or foreign matter in HVPS board

2. Toner cartridge is expired.

3. Bad OPC


8. Stains on the printout

Description: The printout are stained

Check and Cause


2. Replace OPC Unit or ITB Unit

Solution

1. Toner leakage due to improper sealing in development unit.

2. Poor cleaning of OPC Unit or ITB Unit


9. Stains on Back of Page

Description: The back of the page is stained periodically

Check and Cause

1. Check the period and replace the part with problem.

2. If there is a problem with disengagement, please check the operation of the clutch of driving T2 Roller, and replace it if it is necessary.

Solution

1. 55.2 mm: 2nd Transfer roller could be contaminated when engaged or disengaged.

2. 88.4 mm: Fuser roll could be contaminated due to cold offset


10. Blank page Print out

Description: Blank page is printed

Check and Cause

1. Check OPC-ground contact.

2. Check LSU Unit

3. Check HVPS Board

Solution

1. Bad electric contacts in toner cartridge or OPC unit

2. LSU Unit error

3. No development high voltage applied from HVPS


No Roller Period 현상

1 OPC Drum 188.5 mm White /Black Spot

2 Charge Roller 37.7 mm White /Black Spot

3 Supply Roller 32.8 mm Periodical Band

4 Developing Roller 26.8 mm White /Black Spot, Periodical Band

6 Transfer Roller(T2) 55.2 mm Periodical Band

7 Gap-ring 32.84mm Periodical Band

8 Fusing Belt 32.9 mm White /Black Spot

Table. Periodic Images according to Rollers


5 Transfer Roller(T1) 43.8 mm Periodical Band

clx-317x series training feb. 2008 clx-317x series training feb. 2008 cru technical notes

Documents

toner slider

toner cartridge1

toner cartridge2

opc cartridge

itb cartridge

toner layer thickness

itb unit

lsu unit