Kyocera PF-70 Service Manual

PF-70

			3CC
		CONTENTS
1-1 Specifications
1-1-1 Specifications .......................................................................................................................................			1-1-1
1-1-2	Parts names .........................................................................................................................................		1-1-2
1-1-3	Machine cross section ..........................................................................................................................		1-1-3
1-1-4	Drive system ........................................................................................................................................		1-1-4
1-2 Installation
1-2-1 Unpacking ............................................................................................................................................			1-2-1
1-2-2 Installing the desk dehumidifier (service part) ......................................................................................			1-2-2
1-3 Troubleshooting
1-3-1	Paper misfeed detection ......................................................................................................................		1-3-1
	(1)	Paper misfeed indication ................................................................................................................	1-3-1
	(2)	Paper misfeed detection conditions ................................................................................................	1-3-1
	(3)	Paper misfeeds ...............................................................................................................................	1-3-3
1-3-2 Self-diagnosis .......................................................................................................................................			1-3-5
	(1)	Self-diagnostic function ..................................................................................................................	1-3-5
	(2)	Self-diagnostic codes .....................................................................................................................	1-3-5
1-3-3	Electrical problems ...............................................................................................................................		1-3-7
	(1)	The paper feed desk does not operate when the copier print key is pressed. ...............................	1-3-7
	(2)	The desk drive motor does not operate. .........................................................................................	1-3-7
	(3)	The desk upper paper feed clutch does not operate. .....................................................................	1-3-7
	(4)	The desk lower paper feed clutch does not operate. ......................................................................	1-3-7
	(5)	The desk feed clutch does not operate. .........................................................................................	1-3-7
	(6)	The desk upper lift motor does not operate. ...................................................................................	1-3-8
	(7)	The desk lower lift motor does not operate. ...................................................................................	1-3-8
	(8)	The bypass paper feed clutch does not operate. ...........................................................................	1-3-8
	(9)	The size of paper in the lower drawer is not displayed correctly. ...................................................	1-3-8
	(10)	The message requesting covers to be closed is displayed when the desk left cover is closed. ....	1-3-9
	(11)	Others. ............................................................................................................................................	1-3-9
1-3-4	Mechanical problems .........................................................................................................................		1-3-10
	(1)	No paper feed. ..............................................................................................................................	1-3-10
	(2)	Skewed paper feed. ......................................................................................................................	1-3-10
	(3)	Multiple sheets of paper are fed at one time. ...............................................................................	1-3-10
	(4)	Paper jams. ..................................................................................................................................	1-3-10
	(5)	Abnormal noise is heard. ..............................................................................................................	1-3-10
1-4 Assembly and Disassembly
1-4-1 Precautions for assembly and disassembly .........................................................................................			1-4-1
	(1)	Precautions .....................................................................................................................................	1-4-1
1-4-2	Paper feed section ...............................................................................................................................		1-4-2
	(1)	Detaching and refitting the forwarding, paper feed and separation pulleys ....................................	1-4-2
	(2)	Replacing the desk upper or lower paper width switches ...............................................................	1-4-4
	(3)	Replacing the desk feed, upper and lower paper feed clutches .....................................................	1-4-5
	(4)	Adjusting the position of the rack adjuster ......................................................................................	1-4-7
	(5)	Adjusting the amount of slack. ........................................................................................................	1-4-8

2-1	Mechanical construction
	2-1-1 Mechanical construction	................................................................................................... 1 - 1 - 1 ....................	2-1-1
2-2	Electrical Parts Layout
	2-2-1 Electrical parts layout ...........................................................................................................................		2-2-1
2-3	Operation of the PCBs

2-3-1 Desk main PCB ....................................................................................................................................

2-3-1

3CC

2-4 Appendixes

Timing chart No. 1 ..........................................................................................................................................	2-4-1
Timing chart No. 2 ..........................................................................................................................................	2-4-2
Wiring diagram ...............................................................................................................................................	2-4-3

1-1-2

3CC

1-1-1 Specifications

Paper ..............................................	Plain paper (75 – 80 g/m2)
Paper size ......................................	A3 – A5R, folio, 11" × 17" – 51/2" × 81/2"
Capacity .........................................	550 sheets
Power source .................................	Electrically connected to the copier.
Dimensions ....................................	585 (W) × 590 (D) × 315	(H) mm
	231/16" (W) × 231/4" (D) ×	123/8" (H)
Weight ............................................	25 kg/55 lbs

1-1-1

3CC

1-1-2 Parts names

1

2

3

Figure 1-1-1

1 Upper drawer

2 Lower drawer

3 Desk left cover

1-1-2

3CC

1-1-3 Machine cross section

Paper path

Figure 1-1-2 Machine cross section

1-1-3

3CC

1-1-4 Drive system

84

9	3

2

1

7

5

6

	As viewed from machine front
Figure 1-1-3	Drive system
1 Desk drive motor gear	6 Desk lower paper feed clutch gear
2 Idle gear 67/34	7 Gear 20
3 Gear 41	8 Gear 26
4 Desk upper paper feed clutch gear	9 Desk feed clutch gear
5 Gear 41

1-1-4

3CC

1-2-1 Unpacking

#

9

234

56

%

@

0

^

0

8

!

1

8	0

	$
	7
Figure 1-2-1
1Paper feed desk	9Upper pad
2Retainer	0Stays
3Cross-head chromate binding screws,	!Machine cover
CVM4 × 06	@Rear spacer
4Pins	#Plastic bag
5Stays	$Bar code label
6Chrome TP screws, M4 × 10	%Plastic bag
7Outer case	^Installation guide
8Bottom pads

1-2-1

3CC

1-2-2 Installing the desk dehumidifier (service part)

Desk dehumidifier installation requires the following parts:

Desk dehumidifier (P/N 33960020): for 220 – 240 V specifications only Desk dehumidifier (P/N 34860030): for 120 V specifications only

Two (2) M4 × 8 S tight screws (P/N B3324080)

Procedure

1.Remove the upper and lower drawers.

2.Remove the three screws holding the desk rear cover and then the cover.

3.Pass the desk dehumidifier cable to the machine rear through the cable hole in the machine right.

4.Attach the desk dehumidifier using the two M4 × 8 S tight screws.

M4 × 8 S tight screws

Cable hole

Desk dehumidifier

5.Insert the desk dehumidifier connector into the connector of the main harness.

6.Tidy up the desk dehumidifier cable using the wire saddle and route the cable while clipping the wire saddles into the holes in the rear frame.

7.Refit all removed parts.

Figure 1-2-2

Wire saddle Main harness

Desk dehumidifier cable

Figure 1-2-3

1-2-2

3CC

1-3-1 Paper misfeed detection

(1) Paper misfeed indication

When a paper jam occurs, the machine immediately stops operation. The operation unit of the copier shows a jam message and the jam location.

To reset the paper misfeed detection, open and close the desk left cover to turn the desk safety switch off and on.

(2) Paper misfeed detection conditions

FSW2

FCL3

FSW3

DPFCL-U

DFCL

DFSW

DPFCL-L

Figure 1-3-1 Paper feed desk

• No paper feed from desk upper drawer (jam code 12)

Feed switch 3 (FSW3) of the copier does not turn on within 880 ms of the desk upper paper feed clutch (DPFCL-U) turning on; the clutch is then held off for 1 s and turned back on, but the switch again fails to turn on within 880 ms of the retry.

				Off
DPFCL-U		1 s
				On
				Off
FSW3 (copier)	880 ms			880 ms
				On
	Timing chart 1-3-1

• No paper feed from desk lower drawer (jam code 13)

The desk feed switch (DFSW) does not turn on within 880 ms of the desk lower paper feed clutch (DPFCL-L) turning on; the clutch is then held off for 1 s and turned back on, but the switch again fails to turn on within 880 ms of the retry.

				Off
DPFCL-L		1 s
				On
				Off
DFSW	880 ms			880 ms
				On
	Timing chart 1-3-2

1-3-1

3CC

• Jam in copier vertical paper conveying section (jam code 18)

Feed switch 2 (FSW2) of the copier does not turn on within 1203 ms of feed switch 3 (FSW3) of the copier turning on.

FSW3 (copier)						Off
						On
						Off
FSW2 (copier)		1203 ms
						On
	Timing chart 1-3-3

• Jam in paper feed desk vertical paper conveying section (jam code 19)

Feed switch 3 (FSW3) of the copier does not turn on within 888 ms of the desk feed switch (DFSW) turning on.

DFSW						Off
						On
						Off
FSW3 (copier)		888 ms
						On
	Timing chart 1-3-4

• Multiple sheets in paper feed section (jam code 21)

Feed switch 3 (FSW3) of the copier and the desk feed switch (DFSW) do not turn off within the time required to convey the length of the used paper size plus 635 ms of turning on.

FSW3 (copier)	Paper size + 635 ms	Off
DFSW		On

Timing chart 1-3-5

• Multiple sheets in vertical paper conveying section (jam code 22)

Feed switch 2 (FSW2) of the copier does not turn off within 1203 ms of feed switch 3 (FSW3) of the copier turning off.

FSW3 (copier)								Off
								On
FSW2 (copier)					1203 ms			Off
								On
	Timing chart 1-3-6

Feed switch 2 (FSW2) of the copier does not turn off within 1203 ms of feed switch 3 (FSW3) of the copier turning on.

FSW3 (copier)

FSW2 (copier)

	Off
	On
1203 ms	Off
	On

Timing chart 1-3-7

1-3-2

3CC

(3) Paper misfeeds

Problem

Causes/check procedures

(1)

Paper in the desk upper

A paper jam in the

drawer is extremely curled.

paper feed section

Check if the paper feed

is indicated during

copying (no paper

pulley, separation pulley or

feed from desk

forwarding pulley of the

upper drawer).

desk upper drawer is

Jam code 12

deformed.

Broken copier feed switch 3

actuator.

Defective copier feed switch

3.

Check if the desk upper

paper feed clutch

malfunctions.

Electrical problem with the

desk upper paper feed

clutch.

(2)

Paper in the desk lower

A paper jam in the

drawer is extremely curled.

paper feed section

Check if the paper feed

is indicated during

copying (no paper

pulley, separation pulley or

feed from desk

forwarding pulley of the

lower drawer).

desk lower drawer is

Jam code 13

deformed.

Broken desk feed switch

actuator.

Defective desk feed switch.

Check if the desk lower

paper feed clutch

malfunctions.

Electrical problem with the

desk lower paper feed

clutch.

(3)

Broken copier feed switch 2

A paper jam in the

actuator.

paper feed section

Defective copier feed switch

is indicated during

copying (jam in

2.

copier vertical paper

conveying section).

Jam code 18

Corrective measures

Change the paper.

Check visually and replace any deformed pulleys.

Check visually and replace feed switch 3 if the actuator is broken.

Run maintenance item U031 and turn feed switch 3 on and off manually. Replace feed switch 3 if indication of the corresponding switch on the operation panel is not displayed in reverse.

Run maintenance item U247 and select the desk upper paper feed clutch on the operation panel to be turned on and off. Check the status and remedy if necessary.

Check (see page 1-3-7).

Change the paper.

Check visually and replace any deformed pulleys.

Check visually and replace the desk feed switch if the actuator is broken.

With 5 V DC present at CN2-8 on the desk main PCB, check if CN2-7 on the desk main PCB goes low when the desk feed switch is turned on. If not, replace the desk feed switch.

Run maintenance item U247 and select the desk lower paper feed clutch on the operation panel to be turned on and off. Check the status and remedy if necessary.

Check (see page 1-3-7).

Check visually and replace feed switch 2 if the actuator is broken.

Run maintenance item U031 and turn feed switch 2 on and off manually. Replace feed switch 2 if indication of the corresponding switch on the operation panel is not displayed in reverse.

1-3-3