Kyocera PF-70 Service Manual
PF-70
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
3CC
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....................................................................................................................... 2-1-1
1-1-1
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
1-1-1 Specifications
3CC
Paper..............................................Plain paper (75 – 80 g/m2)
Paper size ......................................A3 – A5R, folio, 11" × 17" – 5
1
/2" × 81/2"
Capacity .........................................550 sheets
Power source .................................Electrically connected to the copier.
Dimensions .................................... 585 (W) × 590 (D) × 315 (H) mm
1
/16" (W) × 231/4" (D) × 123/8" (H)
23
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
1-1-3 Machine cross section
3CC
Paper path
Figure 1-1-2 Machine cross section
1-1-3
3CC
1-1-4 Drive system
84
9
7
6
3
2
1
5
Figure 1-1-3 Drive system
1 Desk drive motor gear
2 Idle gear 67/34
3 Gear 41
4 Desk upper paper feed clutch gear
5 Gear 41
As viewed from machine front
6 Desk lower paper feed clutch gear
7 Gear 20
8 Gear 26
9 Desk feed clutch gear
1-1-4
1-2-1 Unpacking
3CC
#
0
8
9
234
56
%
@
0
^
8
!
1
0
Figure 1-2-1
1 Paper feed desk
2 Retainer
3 Cross-head chromate binding screws,
CVM4 × 06
4 Pins
5 Stays
6 Chrome TP screws, M4 × 10
7 Outer case
8 Bottom pads
$
7
9 Upper pad
0 Stays
! Machine cover
@ Rear spacer
# Plastic bag
$ Bar code label
% Plastic bag
^ Installation guide
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.
DPFCL-U
FSW3 (copier)
880 ms
1 s
880 ms
Off
On
Off
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.
DPFCL-L
DFSW
880 ms
1 s
880 ms
Off
On
Off
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)
FSW2 (copier)
1203 ms
Off
On
Off
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
FSW3 (copier)
888 ms
Off
On
Off
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 f eed 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)
DFSW
Paper size + 635 ms
Off
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)
FSW2 (copier)
1203 ms
Off
On
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)
1203 ms
Off
On
Off
On
Timing chart 1-3-7
1-3-2
(3) Paper misfeeds
3CC
Problem
(1)
A paper jam in the
paper feed section
is indicated during
copying (no paper
feed from desk
upper drawer).
Jam code 12
(2)
A paper jam in the
paper feed section
is indicated during
copying (no paper
feed from desk
lower drawer).
Jam code 13
Causes/check procedures
Paper in the desk upper
drawer is extremely curled.
Check if the paper feed
pulley, separation pulley or
forwarding pulley of the
desk upper drawer is
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.
Paper in the desk lower
drawer is extremely curled.
Check if the paper feed
pulley, separation pulley or
forwarding pulley of the
desk lower drawer is
deformed.
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.
(3)
A paper jam in the
paper feed section
is indicated during
copying (jam in
copier vertical paper
conveying section).
Jam code 18
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.
Broken copier feed switch 2
actuator.
Defective copier feed switch
2.
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
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