Mita-Kyocera DF30 Service Manual SDF3004

Chapter 4 TROUBLESHOOTING

Contents

General 2
Maintenance and inspections 3

Regular replacement parts 3
Life-expectancy chart for consumable parts 3
Regular servicing 3

Tools 4

Standard tools 4
Special tools 4

Ratings and adjus tments 5

Mechanical adjustments 5
Electrical adjus tm ents 5

Distance sensor adjustment 5

Initial inspections 6

Confirming the installation environment 6
Confirm the paper to be used 6
Others 6

Handling operation defects 7

Mechanical defects 7

The power supply will not switch on 7
Distance sensor defects 8
Shutter defects 8
Swing guide defects 8
Abnormal tray height 9
Inversion roller will not operate 9

Printer error messages 10

Stapler movem en t motor defects 10
Staple motor defects 10
Matching board movement motor defects 11
Tray elevation motor defects 11
Feed motor defects 11
Paper ejection motor defects 12

Wiring and function of electrical parts 13

Switches 13

Sensors 13
Solenoids and motors 14
Printed circuit board 15
Connectors 15

List of solvents and lubricants 16

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General

4.1 General

This section explains on the following topics:

•

Maintenance and inspections

•

•

•

•

•

•

on page 4-4

Tools
Ratings and adjustments
Initial inspections
Handling operation defects
Wiring and function of electrical parts
List of solvents and lubricants

on page 4-6

on page 4-3

on page 4-5

on page 4-7

on page 4-13

on page 4-19

DF-30/DF-31

4-2

Maintenance and inspections

4.2 Maintenance and inspections

Regular replacement parts

There are no parts that require regular replacement on the main unit.

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Note

Regular replacement parts are the parts that must be replaced regularly without fail to ensure
a constant standard of functionality with the product (parts which have a great effect during
malfunctions despite there being no visible changes or damage to the outsi de of t he devic e.) It
is recommended that the stipulated parts are replaced during the earliest regular service.

Life-expectancy chart for co ns umable parts

There are certain parts that may require replacement owing to deterioration or
damage at least once during the period of product warranty. The expected average
life span for parts that may require replacement owing to defects is shown below.

Table 4.1 Consumable parts

Part name Part number Qty

Stapler kit 3 100,000 staples As of April, 1998

The above list is only for reference purposes. Expected life spans may differ

Note.

Expected

average life span

Remarks

in accordance with experimental test data.

Regular servicing

There are no areas that require regular servicing.

4-3

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Tools

4.3 Tools

Standard tools

The standard tools require d for serv ic ing the finishe r are the sa me as tho se fo r the
printer.

Special tools

There are no special tools required for servicing the finisher.

DF-30/DF-31

4-4

4.4 Ratings and adjustments

Mechanical adjustments

There are no mechanical adjustment required for the finisher.

Electrical adjustments

Distance sensor adjustment

The distance sensor must be adjusted when the finisher driver’s circuit board or
the distance sensor is replaced, and when an error occurs in the back-up RAM.

The distance sensor is adjusted prior to leaving the factory. It is therefore not nec­essary to make these adjustments at the time of installation, but they must be cor­rected if the finisher driver circuit or distance sensor is replaced after this. Initial
corrections must also be made when an error occurs in the back-up RAM. The pro­cedure for this is as follows:

Confirm that the voltage of the lithium battery in the finisher driver circuit board is 2.7V

1

or more.
Set the finisher driver circuit board’s dip switch (SW1) #1 to OFF, #2 to OF F, #3 to OFF

2

and #4 to ON.
Insert one sheet of white paper in each of the trays.

3

Press the push switch (SW2). (To start adjustment)

4

Move the trays to each distance adjustment position and load the distance data.

5

LED2 will blink during the adjustment process, and will be illuminated when adjustment

6

is complete. If correct adjustment cannot be performed, LED2 will be extinguished and
the system will shut down in that position.

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Ratings and adjustments

4-5

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Initial inspections

4.5 Initial inspections

Confirming the installation environment

Confirm that the environment in which the device is to be used conforms to the fol­lowing standards:

a
b
c

d

e

f

Confirm the paper to be used

a
b

Confirm that the power supply is within +/-10% of the rated voltage.
Ensure that the device is install on a flat surface.
Ensure that the surrounding temperature is between 10 and 32.5 degrees Cel-

sius, and the surrounding humidity is between 20 and 80% RH.
Avoid areas when the device may be exposed to ammonia gas, high tempera-

tures and humidity (nearby water supply faucets, water boilers and humidifi­ers,) excessive coldness, naked flames or excessive dust.

Avoid areas where the device will be exposed to direct sunlight. If this is
unavoidable, ensure that the device is protected by a curtain or some other
form of screen.

Ensure the area is well ventilated.

Is the paper recommended for use with the finisher being used?
Is the paper damp?

Check the above points by inserted a new pack of paper and performing a test run.

Others

If the finisher is stored in a cold area, such as a warehouse during the w inter
months, and then brought into a warm room, condensation may build up on the
various parts and lead to a wide range of trouble. Either dry off all parts of the
device or leave it to stand with the electricity on for between 10 to 20 minutes when
condensation has built up.

DF-30/DF-31

4-6

Handling operation defects

4.6 Handling operation defects

Take note of the following precautions when implem enting the measures for han­dling operational defects outlined in this section.

When measuring the voltage of the specified connector terminals, check to ensure
that there are no contact defects in the connector.

Discharge static electricity from the body by touching a metal part of the printer
prior to handling circuit boards to prevent them from being damaged through
static electricity.

Mechanical defects

The power supply will not switch on

Possible causes Suggested remedy

The socket is not supplied with the
rated voltage

The power supply plugs are not cor­rectly inserted in the printer, fin­isher or socket.

A defective contact in the interface
connector is preventing the power­on signal from being input.

The power-on signal is not being
output.

Blown fuse.

Defective power supply unit Switch off the printer’s power supply and

Wiring, DC load, finisher driver cir­cuit board

Inform the user that the rated voltage is
not being supplied to the socket.

Correctly plug in the power supply cables.

Reconnect the interface connector.

Switch on the power supply switch to the
printer. Measure the voltage between
JS3-5 (PWRON-IN) and JS3-3 (GND) on
the intermediate substrate connector.
Check the printer if the measured value is
approximately 5V.

Disconnect the power supply unit and
replace the fuse.

disconnect the J1 and J2 connectors from
the finisher driver circuit board.

Plug the power supply cable into the power
supply unit and switch on the printer’s power
supply. Then measure the DC power output
between the J1 and J2 connectors. Take care
not to short the circuit when doing this.

Replace the power supply unit if the rated
value is not being output.

Switch off the printer’s power supply and
check the end of the wiring and leading
from the finisher driver circuit board and
the DC load. If there are no problems with
the wiring and DC load, replace the fin­isher driv er circuit board.

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4-7

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Handling operation defects

Distance sensor defects

Possible cause Suggested remedy

A contact defect exists in the distance
sensor’s signal line connector.

Distance sensor defective Measure the voltage between the J6-4 (GND)

Finisher driver circuit board defective Replace the finisher driver circuit board.

Shutter defects

Possible cause Suggested remedy

Faulty connector contact Reconnect the J7, J9 and J10 connectors on

Shutter close detection switch defective Disconnect the J7 connector from the finisher

Shutter open detection switch defective Measure the voltage between the J9-8 connec-

Finisher driver circuit board defective Replace the finisher driver circuit board.

Reconnect the J6 co nnector on the finisher
driver circuit board.

connector and the J6-2 (Vcc) and J6-3 (Vin)
connectors on the fini sher driv er ci rcuit board.
Replace the distance sensor if 5V does not exist
between J6-4 and J6-2, and if approximately
3V does not exist between J6-4 and J6-3.

the finisher driver circuit board.

driver circuit board. Meas ure the resistance
between the J7-1 connector on the switch and
the J7-2 connector. Replace the shutter close
detection switch if the value is not 0 ohms
when the shutter is raised and oo ohms when
the shutter is lowered.

tor and the J9-9 connector on the finisher
driver circuit board. Replace the shutter open
detection switch if the value is not 0V when
the shutter is raised and approximately 5V
when the shutter is lowered.

DF-30/DF-31

Swing guide defects

Possible cause Suggested remedy

Faulty connector contact Reconnect the J5, J11 and J6 connectors on

the finisher driver circuit board.

Swing guide close detecti on switch
(MS2) defective

Swing guide close detecti on switch
(MS6) defective

Disconnect the J5 connector from the finisher
driver circuit board. Meas ure the resistance
between the J5-9 connector on the switch and
the J5-10 connec tor. Replace the swing guide
close detect ion switch (MS2) if th e v alue is not
0 ohms when the swing guide is raised and oo
ohms when the swing guide is lowered.

Disconnect the J5 connector from the finisher
driver circuit board. Meas ure the resistance
between the J5-11 connector on the switch and
the J5-12 connec tor. Replace the swing guide
close detect ion switch (MS6) if th e v alue is not
0 ohms when the swing guide is raised and oo
ohms when the swing guide is lowered.

4-8

TROUBLESHOOTING

Handling operation defects

Possible cause Suggested remedy

4) Swing guide open detection switch
defective

5) Finisher driver circuit board defec­tive

Abnormal tray height

Possible cause Suggested remedy

Faulty connector contact Reconnect the J5, J7 and J12 connectors on

Tray home position detection sensor
defective

Tray upper limit detection switch defec­tive

Safe area detection switch defective Measure the voltage between GND (CP1) and

Finisher driver circuit board defective Replace the finisher driver circuit board.

Recovery: Measure the voltage betw een the J6­10 connector and the J6-9 conne cto r on th e fin­isher driver circuit board. Replace the swing
guide open detection switch if the value is not
0V when the swing guide is raised and approx­imately 5V when the swing guide is lowered.

Recovery: Replace the finisher driver circuit
board.

the finisher driver circuit board.
Measure the voltage between the J12-5 con-

nector and the J12 -6 connector on the finisher
driver circuit board. Replace the tray home
position detection sensor if the value is not
approximately 5V when the tray is in the home
position and 0V when in any other position.

Disconnect the J5 connector from the finisher
driver circuit board. Meas ure the resistance
between the J5-7 connector on the switch and
the J5-8 connector. Replace the tray upper
limit detection switch if the value is not 0
ohms.

the J5-5 and J5-6 connectors on the finisher
driver circuit board. Replace the safe area
detection switch if the voltage is not between
approximately 25V to 0V when tray assem­blies #2 and #3 are mov ed, or betwee n 18V and
approximately 24V.

Inversion roller will not operate

Possible cause Suggested remedy

Damaged gear Replace the gear if it is damaged.
Inversion solenoid defective Disconnect the inversion solenoid’s J4 connec-

tor. Measure the resistance between the J4-1
connector on the solenoid and the J4-2 connec ­tor. Replace the inversion solenoid if the value
is not approximately 125 ohms.

Feed motor defective Press the SW3 push switch with dip switch #3

(SW1) on the finisher driver circuit board set
to ON and perform a mechanical check.
Replace the feed moto r if it cannot be oper ate d

during this.
Finisher driver circuit board defective Replace the finisher driver circuit board.
Paper deck driver circuit board defec-

tive

Replace the paper deck driver circuit board.

4-9

TROUBLESHOOTING

Handling operation defects

Possible cause Suggested remedy

Option controller circuit board defective Replace the option controller circuit board.
Video controller circuit board defective Replace the video controller circuit board.

Printer erro r messages

The following errors are reported by a message on the printer’s message display.
The printer is not operative until the defect is corrected.

Call service person C8

Stapler movement motor defects

Possible cause Suggested remedy

A contact defect exists in the stapler
movement motor drive’s signal line con­nector.

Stapler movement motor defective Disconnect the J8 conne ctor from the finisher

Finisher driver circuit board defective Replace the finisher driver circuit board.

Reconnect the J8 co nnector on the finisher
driver circuit board.

driver circuit board. Meas ure the resistance
between the J8-5 connector on the motor and
the J8-4, J8-3, J8-2 and J8-1 connectors.
Replace the stapler movement motor if the
value is not approximately 16. 5 ohms.

Call service person C9

Staple motor defects

Possible cause Suggested remedy

A contact defect exists in the staple
motor drive’s signal line connector.

Staple motor defective Disconnect the J8 connector from the finisher

Finisher driver circuit board defective Replace the finisher driver circuit board.

Reconnect the J8 co nnector on the finisher
driver circuit board.

driver circuit board. Meas ure the resistance
between the J8-11 connector on the motor and
the J8-12 connector. Replace the staple motor
if the value is not between 6 and 8 ohms.

Call service person CA

DF-30/DF-31

4-10

TROUBLESHOOTING

Handling operation defects

Matching board movement motor defects

Possible cause Suggested remedy

A contact defect exists in the matching
board movement motor drive’s signal
line connector.

Matching board movement motor defec­tive

Finisher driver circuit board defective Replace the finisher driver circuit board.

Call service person CB

Tray elevation motor defects

Reconnect the J11 connector on the finisher

driver circuit board.

Disconnect the J11 connector from the finisher

driver circuit board. Meas ure the resistance

between the J11-1 connector on the motor and

the J11-2, J11-3, J11-4 and J11-5 connector s.

Replace the matching board movement motor

if the value is not approximately 16 ohms.

Possible cause Suggested remedy

A contact defect exists in the tray eleva­tion motor drive’s signal line connector.

Tray elevation motor defective Disconnect the J7 connector from the finisher

Finisher driver circuit board defective Replace the finisher driver circuit board.

Reconnect the J7 connector on the finisher

driver circuit board.

driver circuit board. Meas ure the resistance

between the J7-4 and J7-5 conn ec t ors on th e

motor. Replace the tray elevation motor if th e

value is not approximately 5.5 ohms.

Call service person CC

Feed motor defects

Possible cause Suggested remedy

A contact defect exists in the feed motor
drive’s signal line connector.

Feed motor defective Disconnect the J10 c onnector from the finisher

Finisher driver circuit board defective Replace the finisher driver circuit board.

Reconnect the J10 connector on the finisher

driver circuit board.

driver circuit board. Meas ure the resistance

between the J10-1, J10-4 and J10 -6 connector s

on the motor and between the J1 0-2, J10-3 and

J10-5 connectors. Replace the feed motor if the

value is not approximately 4.3 ohms.

Call service person CD

4-11

TROUBLESHOOTING

Handling operation defects

Paper ejection motor defects

Possible cause Suggested remedy

A contact defect exists in the paper ejec­tion motor drive’s signal line connector.

Paper ejection motor defective Disconnect the J11 connector from the finisher

Finisher driver circuit board defective Replace the finisher driver circuit board.

Reconnect the J11 connector on the fin isher
driver circuit board.

driver circuit board. Meas ure the resistance
between the J11-6 and J11-7 connectors on th e
motor. Replace the paper ejection motor if the
value is not approximately 42 oh ms.

DF-30/DF-31

4-12

TROUBLESHOOTING

Wiring and function of electrical parts

4.7 Wiring and function of electrical parts

Switches

MS

MS2

MS3

MS1

MS

MS7

Symbol Description ID Function

Switch MS1 Upper cover open/close detection switch

MS4

MS2 Swing guide open detection switch
MS3 Safe area detection switch
MS4 Shutter open detection switch
MS5 Tray upper limit detection switch
MS6 Swing guide close detection switch
MS7 Front cover open/close detection switch

4-13

TROUBLESHOOTING

Wiring and function of electrical parts

Sensors

PS1

PI3

PI

PI1

PI1

PI4

PI

PI1

PI

TP1

PI2

PI

PI1

PI7

Symbol Description ID Function

Photo-inter­rupter

PI1 Inlet paper detection sensor
PI2 Inverted paper detection sensor
PI3 Paper ejection detection sensor
PI4 Stapler tray paper detection sensor
PI5 Shutter open detection sensor
PI6 Matching board home position detection

sensor
PI7 Stapler home position detection sensor
PI8 T ray home position detection sensor
PI9 Tray elevation motor clock detection sen-

sor
PI10 Paper eject motor clock detection sensor
PI15 Joint sensor
PI18 Swing guide close detection sensor

DF-30/DF-31

4-14

Wiring and function of electrical parts

Symbol Description ID Function

Photo-sensor PS1 Distance sensor
Thermal protec-

tor

Solenoids and motors

TP1 Tray elevation motor temperature detec-

tion sensor

SL

TROUBLESHOOTING

SL

SL

M3

M4

M2

M1

SL7

M

Symbol Description ID Function

Solenoids

SL5 Paddle drive solenoid
SL6 Base board shelter solenoid
SL7 Inversion roller drive solenoid
SL8 Face-up flapper drive solenoid

Motors M1 Feed motor

M2 Paper ejecti on mo to r
M3 Matching board movement motor
M4

Stapler movement motor

4-15

TROUBLESHOOTING

Wiring and function of electrical parts

Symbol Description ID Function

Printed circuit board

M5
M6

Tray elevation motor

Staple motor

1

4

2

3

Ref. Description Function

Finisher driver circuit

1

board

2

Staple exchange comple-

Control of all types of load and various detec­tion function s

For the use of test stapling

tion switch circuit board

3

Intermediate circuit
board

Interchanges the signals between the various
sensors and loads and the finisher driver cir­cuit board.

DF-30/DF-31

4-16

Wiring and function of electrical parts

Ref. Description Function

4

Intermediate circuit
board

5

Intermediate circuit
board

Connectors

Interchanges the signals between the various
sensors and loads and the finisher driver cir­cuit board.

Interchanges the signals between the printer
and the finisher driver circuit board.

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1

1

1

1

2

27

2

24

27

2

127

12

123

12

3

134

121

124

3

34

37

32

33

2

122

11

12

11

2

13

31

21

22

1

117

11

1

4-17

TROUBLESHOOTING

Wiring and function of electrical parts

212

1

12

27

2

132

2

114

22

131

7

112

111

11

2

11

2

13

13

2
11

1

21

S2

S3

4

17

7

S1

DF-30/DF-31

4-18

List of solvents and lubricants

4.8 List of solvents and lubricants

Description Purpose Components Remarks

View clean C-17 Cleaner. Example:

Plastic, rubber, outer
covers

MEK(Methyl Ethyl
Ketone) #160

Lubricant Coated between the

Lubricant Coated on the gear

Cleaner. Example:
Metal, oil soiling,
toner soiling

gear and axis

and axis

Fluoride hydrocarbon,
alcohol, field active
agent, water

Fluoride hydrocarbon,
chlorine hydrocar­bon, alcohol

Petroleum based min­eral oil

Silicone oil Permalube SHV-2

TROUBLESHOOTING

To not place near
naked flames. Deliv­ered to the site. Sub­stitute: C1, IPA
(isopropyl alcohol)

To not place near
naked flames. Deliv­ered to the site. Sub­stitute: MEK

Selltellus 68 (manu­factured by Showa
Shell Sekiyu). Tool
No.: CK-8003

(manufactured by
Nihon Oil). Tool No.:
CK-8005

Note

Ensure that all excess oil has been wiped off after using these solvents.

4-19

TROUBLESHOOTING

List of solvents and lubricants

DF-30/DF-31

4-20