Service Tasks

　

○Purpose: Learning what a service engineer should do to maintain the product quality

　

　

● Outline

The table below lists the jobs of a service engineer about the paper feed and transport system.

For a specific explanation, click the corresponding item.

Item Description 1 Parts replacement Explains what must always be done after parts replacement. 2 Maintenance service Explains the contents of maintenance service work. 3 Troubleshooting Explains the actions to be taken after service errors and simple image faults. 4 Service notes Explains what must not be done in service work.

　

　

1. Parts replacement

Some parts of this machine require adjustment or counter clearance in service mode when they are replaced.

The parts requiring adjustments and also their adjustment procedures are as explained below.  

■Manual feed tray unit and manual feed tray paper width sensor

If the manual feed tray unit or manual feed tray paper width sensor is replaced, register the basic values about paper width in he following service mode:

∙ COPIER > FUNCTION > CST > MF-A4R/MF-A6R/MF-A4

 

The following mode is to enter service label values at fine adjustment or at the clearance or replacement of the RAM of DC controller and not to make settings at the replacement of the manual paper feed tray.

∙ COPIER > ADJUST > CST-ADJ > MF-A4R/MF-A6R/MF-A4

 

■Cassette pick-up roller (cassette 1, 2, 3, 4)

If you have replaced the cassette pick-up roller, you will have to reset the cassette pick-up roller life counter so that the count will start anew.

Make the following selections in service mode to reset the counter:

　COPIER > COUNTER > DRBL-1 > C1/2/3/4-PU-RL

■Cassette feed roller (cassette 1, 2, 3, 4)

If you have replaced the cassette feed roller, you will have to reset the cassette feed roller life counter so that the count will start anew.

Make the following selections in service mode to reset the counter:

　COPIER > COUNTER > DRBL-1 > C1/2/3/4-FD-RL

■Cassette separation roller (cassette 1, 2, 3, 4)

If you have replaced the cassette separation roller, you will have to reset the cassette separation roller life counter so that the count will start anew.

Make the following selections in service mode to reset the counter:

　COPIER > COUNTER > DRBL-1 > C1/2/3/4-SP-RL

■Manual feed pick-up roller

If you have replaced the manual feed pick-up roller, you will have to reset the manual feed pick-up roller life counter so that the count will start anew.

Make the following selections in service mode to reset the counter:

　COPIER > COUNTER > DRBL-1 > M-PU-RL

■Manual feed separation pad

If you have replaced the manual feed separation pad, you will have to reset the manual feed separation pad life counter so that the count will start anew.

Make the following selections in service mode to reset the counter:

　COPIER > COUNTER > DRBL-1 > M-SP-PD

Each life count is kept in memory on the DC controller PCB. If you have to replace the DC controller PCB, be sure to enter the count that has been read of the previous PCB.

2. Maintenance service

The table below lists parts that require periodic replacement, cleaning, or inspection by a service engineer.

If these parts come near to the ends of their lives, replace, clean, or inspect them.

　

Item	Parts	Action	Timing	Remarks
Periodic replacement parts	-	-	-	No periodic replacement parts in the fusing system
Durable parts	Pick-up roller	Replace	Every 120,000 sheets
	Feed/separation roller	Replace	Every 120,000 sheets
	Manual feed pick-up roller	Replace	Every 240,000 sheets
	Manual feed separation pad	Replace	Every 240,000 sheets
Periodic services	Transfer/Feed guide	Clean	Every 120,000 sheets	Dry wipe with lint-free paper.

　

　

3. Troubleshooting

■Horizontal resist position error on the second side of a duplex print

This machine does not have a function to detect and correct a resist error on the first and second sides. If there is a horizontal resist position (image write position) error on the second side of a duplex print, correct the error in service mode. Since large paper becomes askew more easily during transport, this machine allows the adjustment value to be varied between small paper and large paper.

1) Horizontal resist adjustment for the second size of a small duplex print

　　∙ COPIER > ADJUST > FEED-ADJ > ADJ-FREE

2) Horizontal resist adjustment for the second size of a large duplex print

　　∙ COPIER > ADJUST > FEED-ADJ > ADJ-L

　

Small paper:  Shorter than the letter size in the transport direction (e.g. A4, B5)

Large paper:  Longer than the letter size in the transport direction (e.g. A3, A4R)

　

In service mode, the side of a duplex print indicates the second one in imaging order. Therefore, the second side of a duplex print corresponds to the first side of a document.

　

■Skew feed or paper wrinkle on the second side of a duplex print

Since the transport path to the resist roller differs between the first side and second side of a duplex print in this machine, the resist loop on the second side must be adjusted. If skew feed or paper wrinkle occurs only on the second side of a duplex print, the resist loop on the second side may be abnormal. Adjust the resist loop in service mode.

　　∙ COPIER > ADJUST > FEED-ADJ > LOOPREFE

　

■Cyclic smearing

If a paper feed or transport roller is damaged or smeared, an image fault appears cyclically. Therefore, the cause of cyclic fault appearance can be identified.

The table below gives the cycles of rollers. If an image fault appears cyclically, a service engineer should identify the cause quickly from the cycle and take corresponding action.

For the location of each transport roller, see the arrangement drawing:

Parts	Occurrence		Cycle	Action
	Simplex print	Duplex print
Transport roller	Face	Back	About 76 mm	Clean or replace the transport roller.
Separation roller	Back	Face	About 76 mm	Clean or replace the separation roller.
Manual paper feed roller	Back	Face	About 104 mm	Clean or replace the manual paper feed roller.
Vertical path roller 1, 2	Face	Back	About 51 mm	Clean or replace the vertical path roller (1 or 2).
Vertical path idler roller 1, 2	Back	Face	About 51 mm	Clean or replace the vertical path idle roller (1 or 2).
Resist roller (Internal)	Face	Face/Back	About 41 mm	Clean or replace the internal resist roller (hard).
Resist roller (External)	Back	Face/Back	About 51 mm	Clean or replace the internal resist roller (soft).
Fused paper ejection roller	Back	Face/Back	About 42 mm	Clean or replace the fused paper ejection roller.
Fused paper ejection rod	Face	Face/Back	About 51 mm	Clean or replace the fused paper ejection rod.
Paper ejection roller	Back	Face/Back	About 46 mm	Clean or replace the paper ejection roller.
Paper ejection rod	Face	Face/Back	About 26 mm	Clean or replace the paper ejection rod.
Duplex transport roller 1, 2	-	Face	About 44 mm	Clean or replace the duplex transport roller (1 or 2).
Duplex transport rod 1, 2	-	Back	Diameter 57mm	Clean or replace the duplex transport rod (1 or 2).

Since duplex printing starts on the second side of a print, the image fault side differs between simplex printing and duplex printing.

4. Service notes

■Option tray

If you have attached the option tray, you will have to make settings on the service mode.  Make the following selections in service mode.

∙ Inner -Way Tray-D1

  COPIER > OPTION > ACC > IN-TRAY

∙ Copy Tray-J1

  COPIER > OPTION > ACC > OUT-TRAY