KONICA MINOLTA EP4000, EP5000 TROUBLESHOOTING
1156SBT000AA
EP5000/EP4000
TROUBLESHOOTING
1139SBT0100A
INTRODUCTION1
1139SBT0101A
1-1. General Precautions
1. When servicing thecopier with its covers removed, use utmost care to prevent your hands, clothing, and
tools from being caught in revolving parts including the chains and gears. When servicing the copier with
the Lower Rear Cover removed, be sure to install the jig.
2. Before attempting to replace parts and unplugging connectors, make sure that the power cord of the copier has been unplugged from the wall outlet.
3. Never create a closed circuit across connector pins except those specified in the text and on the printed
circuit.
4. When creating a closed circuit and measuring a voltage across connector pins specified in the text, be
sure to use the green wire (GND).
5. When the user is using a word processor or personal computer from the wall outlet of the same line, take
necessary steps to prevent the circuit breaker from opening due to overloads.
6. Keep all disassembled parts in good order and keep tools under control so that none will be lost or damaged.
1139SBT0102A
1-2. How to Use This Book
1. If a component on a PWB or any other functional unit including a motor is defective, the text only instructs
you to replace the whole PWB or functional unit and does not give troubleshooting procedures applicable
within the defective unit.
2. All troubleshooting procedures contained herein assume that there are no breaks in the harnesses and
cords and all connectors are plugged into the right positions.
3. For the removal procedures of covers and parts, see DIS/REASSEMBLY, ADJUSTMENT.
4. The troubleshooting procedures are given in the order of greater frequency of trouble or order of operation.
5. The procedures preclude possible malfunctions due to noise and other external causes.
1139SBT0103A
1-3. Reading the Text
1. The paper transport failure troubleshooting procedures are given according to the symptom. First identify
the location where the paper is present and start the procedure for that particular location. For malfunction
troubleshooting, start with step 1 and onward.
2. Make checks in numerical order of steps and, if an item is checked okay, go to the next step.
Pattern 1 Pattern 2
Check ItemStep Result Action
12Is...? YES Do this.
↑↑↑↑
Go to step 2 if you answered NO.
1
2
T-1
Check ItemStep Result Action
Is...? YES
Go to step 2 if it checks okay.
Do this.
NO Check that.
↑↑↑↑
1151SBT0200A
I/O PORT CHECK2
1156SBT0201A
2-1. Controlled Parts Check Procedure
To allow the Tech. Rep. to easily and safely determine whether a particular controlled part is fully operational, this copier provides the following provision: checking the data of the I/O port of the board IC with
the copier in the standby state (including a misfeed, malfunction, and closure failure condition) allows the
Tech. Rep. to determine whether a signal is properly input to, and output from, a controlled part.
<Procedure>
1) On the circuit diagram accompanying the text, locate the I/O port of the controlled part which is probably
defective when a misfeed or malfunction occurs.
2) Select the “IC Port Data Check” function of “I/O Check” in the Tech. Rep. mode and access the screen
which contains the port identified in step 1 above. (See SWITCHES ON PWBs/TECH. REP. MODE.)
3) Change or check the input or output port data to determine whether the controlled part is operational
and signals are properly input and output.
4) If the controlled part does not operate properly after changing the output port data, select “Controller
Board Check” of “I/O Check” in the Tech. Rep. mode and determine whether the board is responsible
for that malfunction or not.
Note: Only the output ports given on pages T-37 and 38 may be checked by “Controller Board Check”
of “I/O Check” in the Tech. Rep. mode.
T-2
<Controlled Part Check Procedure by Changing Input Port Data>
Example: When a paper misfeed occurs in the paper take-up section of the copier,1st Drawer Pa-
<Procedure>
1) Remove the sheet of paper misfed and reset the misfeed.
2) From the I/O port check list, it is found that the H/L input signal to PC56 is supplied from PWB-A
3) Select “IC Port Check” from the I/O Check function in the Tech. Rep. mode and access the
4) Check that the input port data of PWB-A (IC3A) APB3 on the screen is “H” (sensor being un-
5) Move the PC56 actuator to block the sensor.
6) Return to the “I/O Check” basic screen once, select “IC Port Check” again, choose the screen
per Take-Up Sensor PC56 is considered to be responsible for it.
(IC3A) APB3.
screen which includes the input ports of PWB-A (IC3A) APB3.
blocked).
which includes the APB3 input port data, and make sure that the data has changed from “H”
to “L”.
L: PC56 is operational. H: PC56 is faulty.
T-3
<Controlled Part Check Procedure by Changing Output Port Data>
Example: When a manual paper misfeed occurs, Manual Feed Paper Take-Up Clutch CL3 is con-
<Procedure>
1) Remove the sheet of paper misfed and reset the misfeed.
2) From the I/O port check list, it is found that the ON/OFF output signal of CL3 is supplied from
3) Select “IC Port Check” from the I/O Check function in the Tech. Rep. mode and access the
4) Check that the output port data of PWB-A (IC5A) BPA1 on the screen is “1” (CL3 is deener-
5) Touch the “CHANGE” key on the screen to change the data from “1” to “0”, causing CL3 to be
6) If CL3 was not energized, make the “Controller Board Check” in the same mode (for some elec-
7) If the “ON” signal of CL51 is not output from PWB-A, the corresponding malfunction code is
sidered to be responsible for it.
PWB-A (IC5A) BPA1.
screen which includes the output ports of PWB-A (IC5A) BPA1.
gized).
energized for approx. 5 seconds. This allows you to determine whether the Clutch is “operational or faulty” by checking for the Clutch sound.
Operational: Sound produced. Faulty: No sound produced.
trical parts only).
displayed.
* For CL3, “C0337” is displayed.
T-4
1156SBT0202A
2-2. I/O Port Check List
<Port Check Screens>
The following screens are displayed in the standby mode but may not always be as shown below
D
because some port data are undefined. (Copier+PF-205)
1156T016CA
1156T017CA
1156T018CA
1156T020CA
1156T021CA
1156T022CA
1156T019CA
1156T023CA
T-5
<I/O Port Check List>
bol
No.No
No
Copier *The shaded areas of the following table indicate that the output check cannot be made by
touching the Change key.
Sym-
M11
M12
M13
M14
M15
Parts/Signal Name
bol
M1 Main Drive Motor/REM 2/8 IC4A BPA2
Main Drive Motor/lock
↑↑↑↑
signal
M2 Scanner Motor/SCAN 3/8 IC4A APC0
Ventilation Fan Motor/
M3
REM
Ventilation Fan Motor/
↑↑↑↑
lock signal
Suction Fan Motor/se-
M4
lect signal
Suction Fan Motor/lock
↑↑↑↑
signal
Original Glass Cooling
M5
Fan Motor/REM
Original Glass Cooling
↑↑↑↑
Fan Motor/lock signal
Main Hopper Toner Re-
M8
plenishing Motor/REM
Sub Hopper Toner Re-
M9
plenishing Motor/REM
1st Drawer Paper TakeUp Motor
2nd Drawer Paper TakeUp Motor
1st Drawer Paper Lift-Up
Motor (UP)
1st Drawer Paper Lift-Up
↑↑↑↑
Motor (DOWN)
2nd Drawer Paper
Lift-Up Motor (UP)
2nd Drawer Paper
↑↑↑↑
Lift-Up Motor (DOWN)
Fusing Section Cooling
Fan Motor/REM
Dis-
IC
play
Page
2/8 IC4A BPB1
3/8 IC4A BPC1
2/8 IC4A BPB6
3/8 IC4A BPC2
3/8 IC4A BPC7
3/8 IC4A BPC0
2/8 IC4A BPB5
3/8 IC4A BPC3
3/8 IC5A APA2
3/8 IC5A APA0
3/8 IC5A APA1
3/8 IC5A APA4
3/8 IC5A APA5
3/8 IC5A APA6
3/8 IC5A APA7
3/8 IC4A APC2
Port
No.
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
f
f
f
f
f
f
f
f
f
f
f
f
Display
Hor1 Lor0
OFF ON PJ18A-9
When
locked
Stop
OFF ON PJ34A-1
When
locked
Turned
at high
speed
When
locked
OFF ON PJ15A-5
When
locked
OFF ON PJ11A-4A
OFF ON PJ11A-2A
Turn in-
hibited
Turn in-
hibited
OFF ON (up) PJ18A-5
OFF
OFF ON (up) PJ8A-7
OFF
OFF ON PJ10A-1
When
turned
Scan
cycle
When
turned
Turned
at low
speed
When
turned
When
turned
Turn
per-
mitted
Turn
per-
mitted
ON
(down)
ON
(down)
CN/PJ
No.
PJ18A-10
PJ8A-5
PJ34A-3
PJ15A-4
PJ15A-3
PJ15A-7
PJ18A-1
PJ18A-2
PJ18A-6
PJ18A-8
.
T-6
Dis-
No.No
No
Symbol Parts/Signal Name
Fusing Section Cooling Fan Motor/lock
↑↑↑↑
signal
SL1 Separator Solenoid 2/8 IC4A BPA0
Exit/Duplex Switching
SL5
Solenoid
Manual Feed Paper
Take-Up Solenoid
SL51
(UP)
Manual Feed Paper
Take-Up Solenoid
↑↑↑↑
(DOWN)
Paper Transport
CL1
Clutch
Synchronizing Roller
CL2
Clutch
Manual Feed Paper
CL3
Take-Up Clutch
Duplex Unit Vertical
PC12
Transport Sensor
Toner Bottle Home
PC35
Position Sensor
Manual Feed Paper
PC51
Empty Sensor
Transport Roller Sen-
PC54
sor
Paper Leading Edge
PC55
Detecting Sensor
1st Drawer Paper
PC56
Take-Up Sensor
2nd Drawer Paper
PC57
Take-Up Sensor
1st Drawer Set Sen-
PC61
sor
2nd Drawer Set Sen-
PC62
sor
Page
IC
play
No.
3/8 IC4A APB6
2/8 IC4A BPA5
3/8 IC5A BPA2
3/8 IC5A BPA3
2/8 IC4A BPA3
2/8 IC4A BPA4
3/8 IC5A BPA1
3/8 IC5A BPB0
3/8 IC4A BPC5
3/8 IC5A BPB1
3/8 IC5A BPB6
3/8 IC5A BPB5
1/8 IC3A APB3
1/8 IC3A APB4
1/8 IC3A BPA5
1/8 IC3A APB5
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
f
f
f
f
f
Display
Hor1 Lor0
When
locked
OFF ON PJ11A-6A
OFF ON PJ14A-6
OFF
OFF
OFF ON PJ14A-2
OFF ON PJ14A-4
OFF ON PJ15A-12
Paper
present
Un-
blocked
Paper
present
Paper
present
Paper
present
Paper
present
Paper
present
Out of
positionInposition
Out of
positionInposition
(down)
not
present
Blocked PJ11A-9
not
present
not
present
not
present
not
present
not
present
When
turned
ON
(up)
ON
Paper
Paper
Paper
Paper
Paper
Paper
CN/PJ
No.
.
PJ10A-3
PJ15A-10
PJ15A-9
PJ17A-8
PJ15A-14
PJ19A-5
PJ19A-2
PJ21A-5A
PJ21A-5B
PJ22A-2
PJ22A-6
T-7
Sym-
bol
No.No
No
Parts/Signal Name
bol
1st Drawer Vertical
PC63
Transport Sensor
2nd Drawer Vertical
PC64
Transport Sensor
1st Drawer Lift-Up
PC65
Sensor
2nd Drawer Lift-Up
PC66
Sensor
1st Drawer Lift-Up
PC67
Motor Pulse Sensor
2nd Drawer Lift-Up
PC68
Motor Pulse Sensor
1stDrawer Lower
Limit Position Sen-
PC69
sor
2ndDrawer Lower
Limit Position Sen-
PC70
sor
Paper Size Detect-
PC72
ing Sensor 5
Paper Size Detect-
PC73
ing Sensor 6
Scanner Reference
PC81
Position Sensor
PC101
PC102
PC111
PC112
1st Drawer Paper
Empty Sensor
2nd Drawer Paper
Empty Sensor
Original Cover
Detecting Sensor
Toner Hopper Home
Position Sensor
CNT1 Total Counter/REM 1/8 IC1A P55
Total Counter/Set 2/8 IC4A APB7
↑↑↑↑
Dis-
IC
play
Page
1/8 IC3A APB6
1/8 IC3A APB7
1/8 IC3A APB1
1/8 IC3A APB2
1/8 IC3A APC0
1/8 IC3A APC1
1/8 IC3A BPA2
1/8 IC3A BPA3
2/8 IC3A BPB6
2/8 IC3A BPB7
2/8 IC4A APC4
1/8 IC3A APC2
1/8 IC3A APC3
2/8 IC4A APB5
3/8 IC5A BPB7
Port
No.
No.
Operation Charac-
teristics/Panel Dis-
I/O
.
f
play
Hor1 Lor0
Paper
not
present
Paper
not
present
Not at
upper
limit
Not at
upper
limit
Un-
blocked
Un-
blocked
Not at
lower
limit
Not at
lower
limit
Size not
detected
Size not
detected
Not at
home
Paper
not
present
Paper
not
present
Raised Lowered PJ12A-1
Not at
home
Normally
Out of
position
Paper
present
Paper
present
At up-
per limit
At up-
per limit
Blocked PJ23A-2
Blocked PJ23A-5
At lower
limit
At lower
limit
Size de-
tected
Size de-
tected
At home PJ8A-4
Paper
present
Paper
present
At home PJ11A-9B
When
counting
In posi-
tion
CN/PJ
No.
.
PJ21A-8A
PJ21A-8B
PJ21A-2A
PJ21A-2B
PJ24A-5
PJ24A-6
PJ25A-2
PJ25A-5
PJ23A-9
PJ23A-12
PJ13A-6
−
T-8
Sym-
bol
No.No
No
CNT2 Plug-In Counter/REM 1/8 IC1A P44
RY1 Main Relay 1/8 IC1A P46
LA1
LA2
LA2
S21
S22
S23
S53 Paper Exit Switch 3/8 IC4A BPB2
S61
S62
S63
S64
S106
Parts/Signal Name
bol
Plug-In Counter/Set 3/8 IC5A BPC3
↑↑↑↑
H1 Fusing Heater Lamp 1/8 IC1A P57
Paper Dehumidifying
H3
Heater
Exposure Lamp/AVR
REM
Main Erase Lamp/
REM
Main Erase Lamp/
failure detection
S1 Power Switch 1/8 IC1A P53
Front Door Interlock
Switch
Right Upper Door
Interlock Switch
Left Upper Door
Interlock Switch
Paper Size Detecting
Switch 1
Paper Size Detecting
Switch 2
Paper Size Detecting
Switch 3
Paper Size Detecting
Switch 4
Toner Empty
Detecting Switch
Dis-
IC
No.
Port
No.
play
Page
1/8 IC1A P45
1/8 IC1A P61
2/8 IC4A BPA1
2/8 IC4A APC7
1/8 IC1A P51
3/8 IC5A BPB2
3/8 IC5A BPC6
1/8 IC3A BPA6
1/8 IC3A BPA7
2/8 IC3A BPB4
2/8 IC3A BPB5
3/8 IC1A BPC6
Operation Charac-
teristics/Panel Dis-
I/O
.
f
f
f
f
f
f
play
Hor1 Lor0
When
Normally
Out of
positionInposition
OFF ON PJ33A-2
ON OFF PJ4A-5
ON OFF PJ4A-3
OFF ON PJ8A-13
OFF ON PJ12A-3
OFF ON PJ12A-5
OFF ON PJ4A-1
OFF ON PJ4A-4
OFF ON PJ16A-2
OFF ON PJ16A-4
Paper
present
Size yet
to be de-
tected
Size yet
to be de-
tected
Size yet
to be de-
tected
Size yet
to be de-
tected
Toner
still avail-
able
count-
ing
Paper
not
present
Size de-
tected
Size de-
tected
Size de-
tected
Size de-
tected
Toner
empty
CN/PJ
No.
.
PJ28A-9
PJ28A-7
PJ20A-12
PJ26A-2
PJ26A-4
PJ26A-7
PJ26A-9
PJ11A-8B
T-9
Sym-
bol
No.No
No
bol
UN5
↑↑↑↑
UN6
↑↑↑↑
PWB-G
Parts/Signal Name
1st Drawer Paper
Descent Key
Manual Down
Display 1
2ndDrawer Paper
Descent Key
Manual Down
Display 2
AIDC Sensor Board/
AIDC REM
Dis-
IC
No.
Port
No.
play
Page
1/8 IC3A BPA0
1/8 IC3A APC4
1/8 IC3A BPA1
1/8 IC3A APC5
2/8 IC4A APA4
Operation Charac-
teristics/Panel Dis-
I/O
.
f
f
f
play
Hor1 Lor0
OFF ON PJ24A-3
OFF ON PJ24A-1
OFF ON PJ24A-4
OFF ON PJ24A-2
OFF ON −
CN/PJ
No.
.
T-10
PF-205
No.No
No
Symbol
M21
M22
M23
M24
M25
PC11
PC13
PC17
PC18
PC19
PC20
PC21
PC22
PC23
Parts/Signal Name
Vertical Transport
Drive Motor
3rd Drawer Paper
Take-Up Motor
4th Drawer Paper
Take-Up Motor
3rd Drawer Paper
Lift-Up Motor
3rd Drawer Paper
↑↑↑↑
Lift-Up Motor
4th Drawer Paper LiftUp Motor
4th Drawer Paper Lift-
↑↑↑↑
Up Motor
Lower Left Door
Sensor
Duplex Unit Turnover
Path Sensor
Vertical Transport
Sensor 3
Lower Right Door
Sensor
3rd Drawer Paper
Lift-Up Sensor
3rd Drawer Paper
Empty Sensor
3rd Drawer Paper
Take-Up Sensor
Vertical Transport
Sensor 4
4th Drawer Paper LiftUp Sensor
Dis-
IC
play
No.
Page
4/8 IC1A PB3
4/8 IC1A PB1
4/8 IC1A PB0
4/8 IC1A PA0
4/8 IC1A PA1
4/8 IC1A PA2
4/8 IC1A PA3
4/8 IC2A PB1
4/8 IC2A PB0
4/8 IC1A PC3
4/8 IC1A PE2
4/8 IC1A PG3
4/8 IC1A PC0
4/8 IC1A PE3
4/8 IC1A PC2
4/8 IC1A PF3
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
f
f
f
f
f
Display
Hor1 Lor0
Turn in-
hibited
Turn in-
hibited
Turn in-
hibited
OFF
OFF
Out of
positionInposition
Paper
not
present
Paper
not
present
Out of
positionInposition
Not at
upper
limit
Paper
not
present
Paper
not
present
Paper
not
present
Not at
upper
limit
Turn
per-
mitted
Turn
per-
mitted
Turn
per-
mitted
− ON (up) PJ9A-8B
ON
(down)
− ON (up) PJ9A-2A
ON
(down)
Paper
present
Paper
present
At up-
per limit
Paper
present
Paper
present
Paper
present
At up-
per limit
CN/PJ
No.
.
PJ12A-1~
4
PJ11A-1~
4
PJ10A-1~
4
PJ9A-7B
PJ9A-1A
PJ3A-2
PJ3A-5
PJ7A-5
PJ7A-2
PJ6A-12
PJ6A-2
PJ6A-9
PJ6A-5
PJ8A-8
T-11
Symbol Parts/Signal Name
No.No
No
4th Drawer Paper
PC24
Empty Sensor
3rd Drawer Set
PC25
Sensor
4th Drawer Set
PC26
Sensor
3rd Drawer Paper
Lift-Up Motor Pulse
PC27
Sensor
4th Drawer Paper LiftUp Motor Pulse
PC28
Sensor
4th Drawer Paper
PC29
Take-Up Sensor
Large Capacity Toner
Collecting Box Set
PC31
Sensor
Dis-
IC
play
No.
Page
4/8 IC1A PD0
4/8 IC1A PG2
4/8 IC1A PF2
4/8 IC1A PC1
4/8 IC1A PD1
4/8 IC2A PB3
4/8 IC2A PC3
Port
No.
Operation Char-
acteristics/Panel
I/O
.
Display
Hor1 Lor0
Paper
present
Out of
positionInposition
Out of
positionInposition
blocked
blocked
Paper
present
Paper
present
not
Un-
Un-
not
not
Paper
present
Blocked
Blocked
Paper
present
Paper
present
CN/PJ
No.
.
PJ8A-2
PJ9A-2B
PJ9A-7A
PJ9A-5B
PJ9A-4A
PJ8A-5
PJ2A-2
T-12
PF-105
bol
No.No
No
Sym-
PC11
PC13
PC17
PC18
Parts/Signal Name
bol
Vertical Transport
M21
Drive Motor
3rd Drawer Paper
M22
Take-Up Motor
Main Tray Elevator
M26
Motor
Main Tray Elevator
↑↑↑↑
Motor
M27 Paper Shift Motor 5/8 IC1A PA 0
Paper Shift Motor 5/8 IC1A PA 1
↑↑↑↑
M28 Shift Gate Motor 5/8 IC1A PB2
Shift Tray Paper
PC1
Empty Sensor
Main Tray Lower
PC2
Position Sensor
Shifter Home
PC3
Position Sensor
Shifter Return
PC4
Position Sensor
Elevator Motor
PC5
Pulse Sensor
Shift Motor Pulse
PC6
Sensor
3rd Drawer Set
PC7
Sensor
Lower Left Door
Sensor
Duplex Unit Turnover Path Sensor
Vertical Transport
Sensor 3
Lower Right Door
Sensor
Dis-
IC
play
No.
Page
5/8 IC1A PB3
5/8 IC1A PB1
5/8 IC1A PA2
5/8 IC1A PA3
5/8 IC1A PD1
6/8 IC2A PC1
6/8 IC2A PC0
6/8 IC2A PD1
5/8 IC1A PF2
5/8 IC1A PD0
6/8 IC1A PG2
6/8 IC2A PB1
6/8 IC2A PB0
5/8 IC1A PC3
5/8 IC1A PE2
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
f
f
f
f
f
Display
Hor1 Lor0
Turn in-
hibited
Turn in-
hibited
Up/stop Down PJ4A-6B
Down/
stop
Trans-
fer/stop
Return/
stop
OFF ON PJ4A-2B
Paper
not
present
Not at
lower
limit
Not at
home
Not at
returned
position
Un-
blocked
Un-
blocked
Out of
positionInposition
Out of
positionInposition
Paper
not
present
Paper
not
present
Out of
positionInposition
Turn
per-
mitted
Turn
per-
mitted
Up PJ4A-7B
Return PJ4A-4B
Transfer PJ4A-5B
Paper
present
At
lower
limit
At home PJ4A-8A
At
returned
position
Blocked
Blocked
Paper
present
Paper
present
CN/PJ
No.
.
PJ12A-1~4
PJ11A-1~4
PJ4A-4A
PJ4A-9A
PJ4A-7A
PJ4A-5A
PJ4A-3A
PJ5A-2
PJ3A-2
PJ3A-5
PJ7A-5
PJ7A-2
T-13
Sym-
bol
No.No
No
bol
PC19
PC20
PC21
PC22
PC31
PC34
PC35
PWB-E
UN21
SL41
Parts/Signal Name
3rd Drawer Paper
Lift-Up Sensor
3rd Drawer Paper
Empty Sensor
3rd Drawer Paper
Take-Up Sensor
Vertical Transport
Sensor 4
Large Capacity
Toner Collecting Box
Set Sensor
Shift Gate Position
Sensor
Lower Position
Sensor
Main Tray Paper
Empty Board
Drawer Paper
Descent Key
3rd Drawer Lock
Solenoid
Dis-
IC
play
No.
Page
6/8 IC1A PG3
5/8 IC1A PC0
5/8 IC1A PE3
5/8 IC1A PC2
4/8 IC2A PC3
5/8 IC1A PC1
6/8 IC2A PB3
5/8 IC1A PF3
6/8 IC2A PC2
6/8 IC2A PA1
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
Display
Hor1 Lor0
Not at
upper
limit
Paper
not
present
Paper
not
present
Paper
not
present
Out of
positionInposition
Un-
blocked
Not at
lower
limit
Paper
not
present
OFF ON PJ4A-10A
OFF ON PJ5A-5
At
upper
limit
Paper
present
Paper
present
Paper
present
Blocked
At lower
limit
Paper
present
CN/PJ
No.
.
PJ6A-12
PJ6A-2
PJ6A-9
PJ6A-5
PJ2A-2
PJ4A-1B
PJ4A-2A
PJ4A-6A
T-14
AD-9
No.No
No
Symbol
M31
CL31
SL31
SL32
SL33
PC8
PC9
PC14
PC15
PC16
Parts/Signal Name
Duplex Unit Drive
Motor
Duplex Unit Drive
↑↑↑↑
Motor/lock signal
Duplex Unit Paper
Take-Up Clutch
Duplex Unit Gate
Switching Solenoid
Duplex Unit Rear
Finger Solenoid
Duplex Unit Pick-Up
Solenoid
Duplex Gate Home
Position Sensor
Front/Rear Edge
Guide Plate Home
Position Sensor
Duplex Unit Paper
Entry Sensor
Duplex Unit Paper
Empty Sensor
Duplex Unit Paper
Take-Up Sensor
Dis-
IC
play
No.
Page
7/8 IC1G PB3
7/8 IC1G PE1
7/8 IC1G PA3
7/8 IC1G PH1
7/8 IC1G PH0
7/8 IC1G PB2
7/8 IC1G PE0
7/8 IC1G PC3
7/8 IC1G PC1
7/8 IC1G PC2
7/8 IC1G PC0
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
f
f
f
Display
Hor1 Lor0
OFF ON PJ6G-2
When
locked
present
present
present
When
turned
OFF ON PJ2G-7
OFF ON PJ3G-5
OFF ON PJ3G-7
OFF ON PJ2G-12
Not at
Not at
Paper
Paper
Paper
home
home
not
not
not
At home PJ7G-2
At home PJ7G-5
Paper
present
Paper
present
Paper
present
CN/PJ
No.
PJ6G-1
PJ3G-2
PJ2A-4
PJ2G-9
.
T-15
C-301
No.No
No
Dis-
Symbol
HMOT Elevator Motor 8/8 IC1A PH0
PWB-B
EMP-
SEN
KSEN Paper Feed Sensor 8/8 IC1A PG0
LEV-
SEN
LOW-
SEN
DSEN
SET-
SEN
Parts/Signal Name
Elevator Motor 8/8 IC1A PH1
↑↑↑↑
Paper Plate Descent
Switch Board
Paper Empty Sensor 8/8 IC1A PC1
Paper Plate Raised
Position Sensor
Paper Plate Lowered
Position Sensor
Cassette Door
Sensor
Set Sensor 8/8 IC1A PC2
Page
IC
play
No.
8/8 IC1A PG1
8/8 IC1A PC0
8/8 IC1A PG3
8/8 IC1A PG2
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
Display
Hor1 Lor0
Down/
stop
Up/stop Down CN5A-1
OFF ON CN2A-2
Paper
present
Paper
present
Not upper limit
Not at
lower
limit
Out of
position
Out of
positionInposition
Up CN5A-2
Paper
not
present
Paper
not
present
At up-
per limit
At lower
limit
In posi-
tion
CN/PJ
No.
.
CN2A-5
CN2A-3
CN2A-6
CN3A-5
CN3A-2
CN2A-4
T-16
PF205 : MC
No.No
No
Symbol
M21
M22
M23
M24
↑↑↑↑
M25
↑↑↑↑
PC11
PC13
PC17
PC18
PC19
PC21
PC22
PC23
PC25
PC26
Parts/Signal Name
Vertical Transport
Drive Motor
3rd Drawer Paper
Take-Up Motor
4th Drawer Paper
Take-Up Motor
3rd Drawer Paper
Lift-Up Motor
3rd Drawer Paper
Lift-Up Motor
4th Drawer Paper
Lift-Up Motor
4th Drawer Paper
Lift-Up Motor
Lower Left Door
Sensor
Duplex Unit Turnover Path Sensor
Vertical Transport
Sensor 3
Lower Right Door
Sensor
3rd Drawer Paper
Lift-Up Sensor
3rd Drawer Paper
Take-Up Sensor
Vertical Transport
Sensor 4
4th Drawer Paper
Lift-Up Sensor
3rd Drawer Set
Sensor
4th Drawer Set
Sensor
Dis-
IC
play
No.
Page
6/8 IC1A PB3
6/8 IC1A PB1
6/8 IC1A PB0
6/8 IC1A PA0
6/8 IC1A PA1
6/8 IC1A PA2
6/8 IC1A PA3
6/8 IC2A PB1
6/8 IC2A PB0
6/8 IC1A PC3
6/8 IC1A PE2
6/8 IC1A PG3
6/8 IC1A PE3
6/8 IC1A PC2
6/8 IC1A PF3
6/8 IC1A PG2
6/8 IC1A PF2
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
f
f
f
f
f
Display
Hor1 Lor0
Turn in-
hibited
Turn in-
hibited
Turn in-
hibited
OFF ON (up) PJ9A-8B
OFF ON (up) PJ9A-7B
OFF ON (up) PJ9A-2A
OFF ON (up) PJ9A-1A
Out of
positionInposition
Paper
not
present
Paper
not
present
Out of
positionInposition
Not at
upper
limit
Paper
not
present
Paper
not
present
Not at
upper
limit
Out of
positionInposition
Out of
positionInposition
Turn
per-
mitted
Turn
per-
mitted
Turn
per-
mitted
Paper
present
Paper
present
upper
limit
Paper
present
Paper
present
upper
limit
CN/PJ
No.
.
PJ12A-1~
4
PJ11A-1~
4
PJ10A-1~
4
PJ3A-2
PJ3A-5
PJ7A-5
PJ7A-2
At
PJ6A-12
PJ6A-9
PJ6A-5
At
PJ8A-8
PJ9A-2B
PJ9A-7A
T-17
Symbol Parts/Signal Name
No.No
No
PC29
PC31
PC67
PC68
PC69
PC70
PWB-E1
PWB-E2
UN5
UN6
4th Drawer Paper
Take-Up Sensor
Large Capacity Toner Collecting Box Set
Sensor
3rd Drawer Paper
Lift-Up Motor Pulse
Sensor
4th Drawer Paper
Lift-Up Motor Pulse
Sensor
3rd Drawer Lower
Position Sensor
4th Drawer Lower
Position Sensor
3rd Drawer Paper
Empty Board
4th Drawer Paper
Empty Board
3rdDrawer Paper
Descent Key
4thDrawer Paper
Descent Key
Dis-
IC
play
No.
Page
6/8 IC2A PB3
6/8 IC2A PC3
6/8 IC1A PC1
6/8 IC1A PD1
7/8 IC2A PD1
7/8 IC2A PC0
6/8 IC1A PC0
6/8 IC1A PD0
7/8 IC2A PC1
7/8 IC2A PC2
Port
No.
Operation Char-
acteristics/Panel
I/O
.
Display
Hor1 Lor0
Paper
present
Out of
positionInposition
blocked
blocked
Not at
lower
Not at
lower
Paper
present
Paper
present
OFF ON PJ4A-9A
OFF ON PJ4A-10A
not
present
Un-
Blocked
Un-
Blocked PJ9A-4A
limit
limit
not
present
not
present
Paper
lower
limit
lower
limit
Paper
Paper
CN/PJ
No.
.
PJ8A-5
PJ2A-2
PJ9A-5B
At
PJ4A-7A
At
PJ4A-8A
PJ4A-4A
PJ4A-3A
T-18
PF-5D/AD-8
No.No
No
Symbol
M21
M31
↑↑↑↑
CL31
SL31
SL32
SL33
PC8
PC9
PC11
PC13
PC14
PC15
PC16
PC17
PC18
PC31
Parts/Signal Name
Vertical Transport
Drive Motor
Duplex Unit Drive
Motor
Duplex Unit Drive
Motor/lock signal
Duplex Unit Paper
Take-Up Clutch
Duplex Unit Gate
Switching Solenoid
Duplex Unit Rear
Finger Solenoid
Duplex Unit Pick-Up
Solenoid
Duplex Gate Home
Position Sensor
Front/Rear Edge
Guide Plate Home
Position Sensor
Lower Left Door
Sensor
Duplex Unit Turnover
Path Sensor
Duplex Unit Paper
Entry Sensor
Duplex Unit Paper
Empty Sensor
Duplex Unit Paper
Take-Up Sensor
Vertical Transport
Sensor 3
Lower Right Door
Sensor
Large Capacity Toner
Collecting Box Set
Sensor
Dis-
IC
play
No.
Page
4/8 IC1A PB3
7/8 IC1G PB3
7/8 IC1G PE1
7/8 IC1G PA3
7/8 IC1G PH1
7/8 IC1G PH0
7/8 IC1G FB2
7/8 IC1G PE0
7/8 IC1G PC3
5/8 IC2A PB1
5/8 IC2A PB0
7/8 IC1G PC1
7/8 IC1G PC2
7/8 IC1G PC0
5/8 IC1A PC3
5/8 IC1A PE2
5/8 IC2A PC3
Port
No.
Operation Char-
acteristics/Panel
I/O
.
f
f
f
f
f
f
Display
Hor1 Lor0
Turn in-
hibited
OFF ON PJ5G-2
When
locked
OFF ON PJ2G-7
OFF ON PJ3G-5
OFF ON PJ3G-7
OFF ON PJ2G-12
Not at
home
Not at
home
Out of
positionInposition
Paper
not
present
Paper
not
present
Paper
not
present
Paper
not
present
Paper
not
present
Out of
positionInposition
Out of
positionInposition
Turn
per-
mitted
When
turned
At home PJ7G-2
At home PJ7G-5
Paper
present
Paper
present
Paper
present
Paper
present
Paper
present
CN/PJ
No.
.
PJ12A-1~
4
PJ5G-1
PJ3A-2
PJ3A-5
PJ3G-2
PJ2G-4
PJ2G-9
PJ7A-5
PJ7A-2
PJ2A-2
T-19
1151SBT0300A
PAPER TRANSPORT FAILURE3
1156SBT0301A
3-1. Paper Misfeed
When a paper misfeed occurs, the Touch Panel shows the corresponding message, misfeed location and
paper location.
Blinking
Light
Steady
Light
There is a misfeed at
that location.
There might be a
sheet of paper
stopped at that
location.
1149T002CA
Blinking/Steady LED
➀
➁
➂
➃
➃,➄
➅,➆
➇
➈
➉
,
➆
Multi Bypass take-up and transport T-22
Transport/separator T-20
Fusing/exit T-24
Copier take-up/vertical transport T-17,18
Paper Feed Cabinet take-up/vertical transport T-25 to 28
Duplex Unit vertical transport T-30
1st Drawer take-up T-17
2nd Drawer take-up T-17
3rd Drawer take-up T-25 to 28
4th Drawer take-up T-26
Duplex Unit take-up T-32,33
Duplex Unit storage T-31
ADF take-up −
ADF transport −
ADF turnover/exit −
Sorter −
LCC −
Misfeed/Paper Location Ref. Page
<Display Resetting Method>
When misfeed occurs in the copier Open and close the Front Door.
When misfeed occurs in the option (except Duplex Unit)
Raise and lower the option, or slide the option
away from, and back up against, the copier.
*When option is installed
*
*
*
*
*
*
*
*
*
*
*
T-20
<Misfeed Detecting Sensor Layout>
*When options (PF-205+AD-9)
are installed
Paper Exit Sensor (S53)
*Duplex Unit
Vertical Transport
Sensor (PC12)
*Duplex Unit
Paper Entry
Sensor (PC14)
*Duplex Unit
Turnover Path
Sensor (PC13)
Paper Leading Edge Detecting
Sensor (PC54)
Transport Roller Sensor (PC54)
1st Drawer
Vertical Transport
Sensor (PC63)
1st Drawer Paper
Take-Up Sensor
(PC56)
2nd Drawer
Vertical Transport
Sensor (PC64)
2nd Drawer Paper
Take-Up Sensor
(PC57)
*Vertical Transport Detection
Sensor 3 (PC17)
*Vertical Transport Detection
Sensor 4 (PC22)
*Duplex Unit
Paper T ake-up
Sensor (PC16)
*Duplex Unit Paper
Empty Sensor
(PC15)
*3rd Drawer
Paper T ake-up
Sensor (PC21)
T-21
1156T001AB
*4th Drawer
Paper T ake-up
Sensor (PC29)
1156SBT0302A
g
g
p
3-2. Misfeed Detection Types and Detection Timings
The following table lists the types of misfeed detection classified by the misfeed locations and their corre-
D
sponding detection timings.
Note: For the misfeed detection types and detection timings in the options, see the Service Manual for
the options.
<Copier Paper Take-up Misfeed>
Type Detection Timing
Paper take-up failure
detection
Paper take-up trailing
edge detection
Paper take-up leading
edge detection
Leading edge detection by
Transport Roller Sensor
PC54
1st Drawer Paper Take-Up Sensor PC56 is not blocked (L) even after
the lapse of approx. 2.2 sec. after 1st Drawer Paper Take-Up Motor M11
has been energized.
2nd Drawer Paper Take-Up Sensor PC57 is not blocked (L) even after
the lapse of approx. 2.2 sec. after 2nd Drawer Paper Take-Up Motor
M12 has been energized.
PC56 is not unblocked (H) even after the lapse of T (which varies for
paper sizes) after it has been blocked (L).
PC57 is not unblocked (H) even after the lapse of T (which varies for
paper sizes) after it has been blocked (L).
1st Drawer Vertical Transport Sensor PC63 is not blocked (L) even after
the lapse of approx. 2 sec. after PC56 has been blocked (L).
2nd Drawer Vertical Transport Sensor PC64 is not blocked (L) even
after the lapse of approx. 2 sec. after PC57 has been blocked (L).
PC54 is not blocked (L) even after the lapse of approx. 1.3 sec. after
PC63 has been blocked (L).
PC54 is not blocked (L) even after the lapse of approx. 1.7 sec. after
PC64 has been blocked (L).
<Multi-Bypass Misfeed>
Type Detection Timing
Paper take-up failure
detection
PC54 is not blocked (L) even after the lapse of approx. 2.5 sec. after
Manual Feed Paper Take-Up Clutch CL3 has been energized.
<Transport/Separator Misfeed>
Type Detection Timing
Trailing edge detection by
Transport Roller Sensor
PC54
Leading edge detection by
Paper Leading Edge Detecting Sensor PC55
Trailing edge detection by
PC55
PC54 is not unblocked (H) even after the lapse of T (which varies for
paper sizes) after the TRON signal has been input.
PC55 is not blocked (L) even after the lapse of approx. 1.2 sec. after
PC54 has been blocked (L).
PC55 is not unblocked (H) even after the lapse of approx. 1.2 sec. after
PC54 has been unblocked (H).
T-22
<Fusing/Exit Misfeed>
Type Detection Timing
Leading edge detection by
Paper Exit Switch S53
Trailing edge detection by
S53
S53 is not deactuated even after the lapse of approx. 2 sec. after the
TRON signal has been input.
S53 is not actuated even after the lapse of approx. 2.5 sec. after PC55
has been unblocked (H).
T-23
1156SBT0303A
3-3. Misfeed Clearing Procedures
1156SBT030301A
1) Copier Paper Take-Up Misfeed
Relevant Electrical Parts
2nd Drawer Paper Take-Up Sensor PC57
D
1st Drawer Vertical Transport Sensor PC63
D
2nd Drawer Vertical Transport Sector PC64
D
Transport Roller Sensor PC54
D
1st Drawer Paper Take-Up Motor M11
D
2nd Drawer Paper Take-Up Motor M12
D
Paper Transport Clutch CL1
D
Power Supply Board PWB−C
D
Master Board PWB-A
D
T-24
1156C01TAA
!Copier Paper Take-Up Misfeed Clearing Procedure
T
ake Up
Sensor
p
y
ly?
Symptom Step Check Item Result Action
Paper is not taken
D
up at all.
Paper is stationary
D
before the Paper
Take-Up Sensor.
Paper is stationary
at the Vertical Transport Section.
.
Does the paper being used
meet product specifica-
1
tions?
Is the paper curled, waved,
or damp?
2
Is the Trailing Edge Stop or
Edge Guide in good posi-
3
tion?
Are the Paper Take-Up Roll
and Separator Roll de-
4
formed, worn, or dirty with
paper dust?
Is the Paper Take-Up Motor
(M11, M12) turning when
5
the Start key is pressed?
Run the “Controller/Board
Check.” Is either of the
6
malfunction codes C032A
and C032B displayed?
Are the Vertical Transport
Rollers deformed, worn, or
1
dirty with paper dust?
Does PC63 operate properly?
Using the IC Port Data
2
Check function, make an input port check on PWB-A
(IC3A) APB6.
Does PC64 operate properly?
Using the IC Port Data
3
Check function, make an input port check on PWB-A
(IC3A) APB7.
Does PC56 operate properly?
Using the IC Port Data
4
Check function, make an input port check on PWB-A
(IC3A) APB3.
Does PC57 operate properly?
Using the IC Port Data
5
Check function, make an input port check on PWB-A
(IC3A) APB4.
Does PC54 operate properl
?
Using the IC Port Data
6
Check function, make an input port check on PWB-A
(IC5A) BPB6.
Instruct the user to use the
paper that meets product
NO
specifications.
Change the paper. Instruct
the user in how to store the
YES
paper.
Position the edge stop and
guide to meet the paper
NO
size.
Clean or change the Paper
Take-Up Roll and/or Sepa-
YES
rator Roll.
Check the motor for overload.
NO
Change PWB-A.
YES
Change M11, M12, or
NO
PWB-C.
Clean or change the Vertical Transport Rollers.
YES
Check the PC63 actuator
for operation and, if it
checks okay, change PC63.
NO
Check the PC64 actuator
for operation and, if it
checks okay, change PC64.
NO
Check the PC56 actuator
for operation and, if it
checks okay, change PC56.
NO
Check the PC57 actuator
for operation and, if it
checks okay, change PC57.
NO
Change PWB-A.
YES
Check the PC54 actuator
for operation and, if it
NO
checks okay, change PC54.
T-25
Symptom Step Check Item Result Action
Paper is stationary
at the Vertical Transport Section
Does CL1 operate properly?
Using the IC Port Data
7
Check function, set the data
of PWB-A (IC4A) BPA3 to
“0.”
Run the “Controller Board
”
Check.” Is the malfunction
8
code “C0321” displayed?
Check the drive transmission path.
YES
Change PWB-A.
YES
Change CL1.
NO
T-26
1156SBT030302A
2) Transport/Separator Misfeed
Transport Roller Sensor PC54
D
Paper Leading Edge Detecting Sensor PC55
D
Paper Transport Clutch CL1
D
Synchronizing Roller Clutch CL2
D
Relevant Electrical Parts
Separator Solenoid SL1
D
Suction Fan Motor M4
D
High Voltage Unit HV1
D
Master Board PWB-A
D
T-27
1156C02TAA
!Transport/Separator Misfeed Clearing Procedure
g
p
pp y
y
p
Symptom Step Check Item Result Action
Paper is stationary at the Synchronizing Roller.
Paper is stationary near the PC
Drum.
Paper is wedged
at the Paper
Separator Fingers.
Is the paper curled, waved or
damp?
1
Does CL2 operate properly?
Using the IC Port Data Check
2
function, set the data of PWB-A
(IC4A) BPA4 to “0.”
Run the “Controller Board
”
Check.” Is the malfunction code
3
“C0320” displayed?
Is an adequate length of loop
formed before the Synchroniz-
4
ing Roller?
Does PC55 operate properly? YES Change PWB-A.
Using the IC Port Data Check
5
function, make an input port
check on PWB-A (IC5A) BPB5.
Is the Pre-Image Transfer Guide
1
Plate deformed or dirty?
Are the Image Transfer/Paper
Separator Corona wires deterio-
2
rated or dirty?
Is the paper guide at the Paper
Separator Corona deformed or
3
dirty?
Are the Synchronizing Rollers
deformed, worn, or dirty with pa-
4
per dust?
Run the “Controller Board YES Change PWB-A.
Check.” Is the malfunction code
5
“C031D” or ”C031E” displayed?
Are the Paper Separator Fin-
1
gers deformed or dirty?
Does SL1 operate properly?
Using the IC Port Data Check
2
function, set the data of PWB-A
(IC4A) BPA0 to “0.”
Run the “Controller Board
”
Check.” Is the malfunction code
3
“C0324” displayed?
Change the paper. Instruct
the user in how to store the
YES
paper.
Check the drive transmission path.
YES
Change PWB-A.
YES
Change CL2.
NO
Adjust the loop length using
the “Loop Adjust (Drawer)”
NO
function of “Tech. Rep.
Choice.”
Check the PC55 actuator for
operation and, if it checks
NO
okay, change PC55.
Correct, clean, or change
YES
the guide plate.
Clean or change the wires.
YES
Clean or change the paper
guide.
YES
Clean or change the Synchronizing Rollers.
YES
Change the Image Transfer/
Paper Separator Coronas
NO
Assy or HV1.
Clean or change the Paper
YES
Separator Fingers.
Check the drive transmission path.
YES
Change PWB-A.
YES
Change SL1.
NO
T-28
Symptom Step Check Item Result Action
y
Paper is stationary on the Suction Belts.
Do the Suction Belts turn when
1
the Main Drive Motor runs?
Does M4 operate properly?
Using the IC Port Data Check
function, set the data of PWB-A
2
(IC4A) BPC2 to “0.” Does M4
then run at full speed?
Check the drive gears and
NO
timing belt.
Check the Suction Belts.
YES
Change M4 or PWB-A.
NO
T-29
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