Minolta 1030, CS1030, 1031, CS1031 Trobleshooting

I

1159SBTOOOAA

EPlO3O/EP1030F EP1031/EP1031F

'w

~ TROUBLESHOOTING

MINOllLA

1159SBTOOOBA

INTRODUCTION

1159SBTOlOlA

l-l. General Precautions

1,

When servicing the copier 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.

2. Before attempting to replace parts and unplug 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 a 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.

7. Adjust, choice, count, and other types of data are stored in TC3 (EEPROM) on Master Board PWB-A. Keep this in mind and take necessary precautions when replacing PWB-A.

1139SBT0102A

I-2.

How to Use This Book

1,

If a component on a PWB or any you to replace the whole 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

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 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.

other

PWBorfunctional

functional unit including a motor is defective, the text only instructs

unit and does not give troubleshooting procedures applicable

DIS/REASSEMBLY,

startthe

procedure for that particular location. For malfunction

ADJUSTMENT.

Pattern 1

Step 1 Check ItemIResult 1 Action

1 I Is...?

2

Go

to step 2 if you answered NO.

YES IDo this.

I

1 I

1 I

I

T-l

Pattern 2

Step1

Check

Item

I

Result

I

Aa

1159SST0200A

PAPER TRANSPORT FAILURE

1159SBT0201A

2-1. Misfeed Detection Types and Detection Timings

When a misfeed occurs, the corresponding misfeed code (the appropriate one of those shown below) starts blinking to let the user know where the misfeed has occurred.

Misfeed Code

PC

J2

J3

J8

Type

Paper take-up misfeedl Paper Transport Sensor PC2 is not blocked or Paper empty after the lapse of approx. 3.3 sec. after Paper

Take-Up Solenoid SL2 has been energized.

l

Paper Transport Sensor PC2 is not blocked (L) even after the lapse of approx. 1.6 sec. after Multi Bypass Paper Take-Up Solenoid SL3 has been energized.

Transport misfeed

l

Paper Exit Sensor PC3 is not blocked (L) even after the lapse of approx. 2 sec. after Registration Clutch

CL1

has been energized.

l

PC2 is not unblocked (H) even after the lapse of approx. 2.9 sec. (Cassette) or 3.2 sec. (Manual bypass) after Registration Clutch CL1 has been energized.

Exit misfeed

l

Paper does not move past Paper Exit Sensor PC3 even after the lapse of approx. 3 sec. after PC2 has been unblocked (H).

l

PC3 remains blocked for approx. 2 sec. after CL1 has been energized.

SDH misfeed

l

SDH Paper Transport Sensor PC23 is not blocked (L) even after the lapse of approx. 2.3 sec. after SDH Paper Take-Up Solenoid

l

SDH Original Exit Sensor PC24 is not blocked (L) even after the lapse of approx. 1.3 sec. after SDH Registration Clutch CL10 has been energized.

e

PC23 is not unblocked (H) even after the lapse of

approx. 4.4 sec. after

l

PC24 is not unblocked (H) even after the lapse of approx. 1.7 sec. after PC23 has been unblocked (H).

Detection Timing

SLlO

has been energized.

CL1

0 has been energized.

(I_)

even

T-2

CMisfeed

Detecting Sensor Layout>

SDH Paper Transport Sensor

/

SDH Original Set Sensor

ransport

1159TOOlAA

T-3

1159SBT0202A

2-2. Misfeed Clearing Procedures

1159SBTO20201

A

1) Copier Paper Take-Up Misfeed

Relevant Electrical Parts

l

Paper Transport Sensor (PC2)

l

Paper Take-Up Solenoid (SL2)

l

Master Board

(PWB-A)

7

T-4

1159COiTAA

I

+Copier

Paper Take-Up Misfeed Clearing Procedure

Symptom

b

Paper is not

taken up at all.

s

Paper is

stationary at 1 the Transport Rollers.

Step

Does the paper being used meet product specifications?

1

Is the paper curled, waved, or Change the paper. Instruct

2

damp?

Is the Paper Take-Up Roll deformed, worn, or dirty with

3

paper dust? Check Paper Take-Up Solenoid

SL2.

Does the voltage across

4

on PWB-A and GND change from Start key is pressed?

Are the Transport Rollers deformed, worn, or ditty with YES paper dust?

Does the voltage across on PWB-A and GND change operation and, if it checks from

2

Paper Transport Sensor PC2 is blocked?

Check item

DC24V

to DCOV when the

DC5V

to DCOV when

PJ6A-2

PJ3A-2

Result

instruct the user to use the

NO

paper that meets product specifications.

the user in how to store the

YES

paper. Clean or change the Paper

YES

Take-Up Roll. Change SL2.

YES

Change PWB-A.

NO

Clean or change the Paper Take-Up Roll.

Check the PC2 actuator for okay, change PC2.

NO

Action

T-5

1159SST020202A

2) Transport Misfeed

l

Paper Transport Sensor (PC2)

Relevant Electrical Parts

l

Registration Clutch

l

High Voltage Unit

l

Master Board (PWB-A)

(CLI)

(HVl)

-p!lJ--

PC2

p&q----

CNl

PJ9

1 3 j&

3

I

I------l

PJ3A

1

Il3112b-

PWB-A

PJ7A

/I

1

I

1159C02TAA

T-6

I

*Transport

Symptom

Paper is Is the paper curled, waved, or

stationary at the

Synchronizing paper. Roller.

Paper is stationary near the PC Drum.

Paper is stationary before 1 the Fusing Unit.

Misfeed Clearing Procedure

Step

1

2

3

4

1

2

3

4

5

6

Check Item

damp?

Does the paper being used Instruct the user to use the meet product specifications? NO paper that meets product

Check Registration Clutch

CLl.

Does the voltage across

PJ7A-13 on PWB-A and GND

change from DC24V to DCOV after the Start key has been pressed?

Does the voltage across Check the PC2 actuator for

PJ3A-2 on PWB-A and GND

change from DC5V to DCOV when Paper Transport Sensor PC2 is blocked?

Is the Pre-Image Transfer Guide Plate deformed or dirty?

Is the Image Transfer Corona wire deteriorated or dirty?

Is the Comb Electrode deteriorated or dirty? Electrode.

Is the paper guide at the Paper Separator Corona deformed or dirty?

Are the Synchronizing Rollers

deformed, worn, or dirty with

paper dust? Is paper wound around the PC

Drum?

Do the Fusing Rollers turn when the Main Drive Motor is energized?

Result Action

Change the paper. Instruct

YES the user in how to store the

specifications. Change CL2.

YES

Change PWB-A.

NO

operation and, if it checks

NO

okay, change PC2.

Clean or change the guide

YES

plate Clean or change the wire.

YES

Clean or change the Comb

YES

Clean or change the paper

YES

guide.

Clean or change the

YES Synchronizing Rollers,

Change the Image Transfer/

YES

Paper Separator Coronas Assy or

HVl.

Check the drive transmission

NO

path.

T-7

1159SBT020203A

3) Multi Bypass Misfeed

l

Paper Take-Up Sensor (PC2)

Relevant Electrical Parts

l

Multi Bypass Paper Take-Up Solenoid (SL3)

l

Master Board fPWB-AI

PC2 Blocked 1 PC2

-lllJ-

PC2

t@t

Blocked I

r-l

SL3

SL3 olu lDCOV

SL3 OFF

DCOV

DCSV

IDC24V

I

PJ3A

-+ 1

PWB-A

PJ5A

1159C03TAA

+Multi

I

Bypass Misfeed Clearing Procedure

Symptom

0

Paper is

not taken up at all.

Stecb

Does the paper being used meet product specifications?

Is the paper curled, waved, or damp?

2

Is the Multi Bypass Paper Take-Up Roll deformed, worn, or dirty with

3

paper dust? Does the voltage across PJ3A-2 on

PWB-A and GND change from

4

DC5V to DCOV when Paper

Check Multi Bypass Paper Take-Up

Does the voltage across PJ5A-2 on

5

Check Item

Result

Instruct the user to use the

NO paper that meets product

specifications. Change the paper. Instruct

the user in how to store the

YES

paper. Clean or change the Multi

Bypass Paper Take-Up Roll.

YES

Check the PC2 actuator for operation and, if it checks

NO

okay, change PC2.

Action

T-9

1159SST020204A

4) Exit Misfeed

l

Paper Exit Sensor (PC3)

Relevant Electrical Parts

l

Master Board (PWB-A)

PJ'IA

PWB-A

1159C04TAA

T-10

+Exit

Misfeed Clearing Procedure

Are the Separator Fingers deformed,

Fusing Roller Paper

defective paper separator

T-11

1159SBT020205B

5) SDH Misfeed

l

SDH Paper Transport Sensor (PC23)

l

SDH Original Set Sensor (PC22)

l

SDH Original Exit Sensor (PC24)

(EP1030F/EP1031

F)

Relevant Electrical Parts

l

SDH Paper Take-Up Solenoid

l

SDH Drive Motor

l

SDH Registration Clutch

. SDH PWB (PWB-C)

l

Master Board

(MlO)

(PWB-AI

(CLlO)

(SLl

0)

T-12

1159CO5TAB

+SDH

I

Misfeed Clearing Procedure

Symptom

Iocument lot

taken up at ,

FlII.

Document is stationary at the Registration paper dust? Roller.

Document is stationary at the Exit Roller.

Step

is

Does the document being used meet specifications for reliable

feeding?

Do the documents loaded

2

teed the capacity of the SDH?

Are the Document Take-Up and Clean or change the

Separator Rolls deformed, YES

3

worn, or dirty with paper dust?

Does the voltage across on PWB-C and GND change

from

4

Original Set Sensor PC22 is blocked?

Check SDH Drive Motor Ml 0. Is the voltage across

5

PWB-A and GND

the Start key is pressed?

Check SDH Paper Take-Up Solenoid Does the voltage across

6

on PWB-A and GND change from Start key is pressed?

Is the Registration Roller deformed, worn, or dirty with YES

1

Does the voltage across on PWB-C and GND change

2

from

Paper Transport Sensor PC23 is blocked?

Check SDH Registration Clutch CL1 0. Does the voltage across

3

on PWB-A and GND change from Start key has been pressed?

Is the Exit Roller deformed,

1

worn, or dirty with paper dust? Does the voltage across

on PWB-C and GND change from

2

Original Exit Sensor PC24 is blocked?

Check Item

DC5V

to DCOV when SDH

SLlO.

DC24V

DC5V

DC24V

DCZV

to DCOV when SDH

ex-

PJ4C-2

PJl A-8

on

DC24V

when

PJl

A-6

to DCOV when the

PJ4C-5

to

DCOV when SDH

PJl

A-7

to DCOV after the

PJ4C-9

Result Action

Instruct the user to use a

document that meets

NO

specifications for reliable feeding.

Ask the user to keep within

YES

the SDH document capacity.

Document Take-Up and

Separator Rolls. Check the PC22 actuator for

operation and, if it checks okay, change PC22.

NO

Change PWB-A or PWB-C.

NO

Change Ml 0.

YES

Change

SLl

YES

Change PWB-A or PWB-C.

NC

Clean or change the Registration Roller.

Check the PC23 actuator for operation and, if it checks

okay, change PC23,

NO

Change CL1 0.

YES

Change PWB-A or PWB-C.

N

O

Clean or change the Exit

YES

Roller. Check the PC24 actuator for

operation and, if it checks

NO

okay, change PC24.

YES

Change PWB-C.

0.

T-13

1159SBT0300A

MALFUNCTIONS

1159SBT0301A

3-1,

Detection Timings Classified by Malfunction Codes

Code

Description

Detection Timing

Main Drive Motor Mlsl The lock signal remains HIGH for a continuous I-sec. or

coo

failure to turn

period while Ml remains energized,

l

The lock signal remains LOW for a continuous 1 -sec. or more

period while Ml remains deenergized.

Ozone Fan Motor

co4

failure to turn Exposure Lamp LA1

malfunction

c40

The lock signal remains HIGH for a continuous 1 -sec. or more

M3s

period while M3 remains energized.

l

The AE Sensor output at 91 msec. after the start of a scan motion with LA1 ON is lower than the AE Sensor output when LA1 is OFF.

l

The AE Sensor output at any timing when the Scanner is at home position with LA1 OFF is higher than the AE Sensor output when LA1 is ON.

Warming-up failure

The surface temperature of the Upper Fusing Roller does not reach a given level after a given period of time during warming-up as detailed below:

l

c50

Abnormally low fusing The surface temperature of the Upper Fusing Roller is below

c51

temperature Abnormally high fusing

C52

temperature

Scanner drive

malfunc-

tion

From room temperature to

l

From 45 to

l

From 80 to 115C: 10 sec.

l

From 115 to 145C: 15 sec.

l

From 145 to

150C

after the copier has completed warming up.

80C:

160C:

10 sec.

The surface temperature of the Upper Fusing Roller is higher after the copier has completed warming up.

l

When the Scanner is at the home position, Scanner Home

Position Sensor

PC1

1

45C: 10

sec.

15 sec.

does not go from LOW to HIGH even after

the lapse of 1 sec. after the Scanner has started a scan motion.

l

When the Scanner is at a position other than home,

C60

not go from HIGH to LOW even after the lapse of 8.4 sec.

the Scanner has started a scan motion.

<When

the Start key is pressed>

l

PC11 does not go from LOW to HIGH even after the lapse of

1 sec. after the Scanner has started a scan motion.

l

PC11 does not go from HIGH to LOW even after the lapse of

8.4 sec. after the Scanner has started a return motion.

230C

PC11

more

or

does

after

T-14

Code

1

Description

l

Lens drive malfunction

C61

AE Sensor malfunction

CFl

ATDC Sensor malfunction The output from ATDC Sensor UN3 is

CF3

EEPROM malfunction Data which must be retained even when power is turned OFF

EO

IU toner detection failure

Blown IU fuse detection

E2

failure

Lens Home Position Sensor PC12 does not go from LOW to HIGH even when Lens Drive Motor M5 is energized for 750 pulses for the lens movement in the reduction direction.

l

PC12 does not go from HIGH to LOW even when M5 is energized for 1400 pulses for the lens movement in the enlargement direction.

The output from AE Sensor Board PWB-E is less than at home position.

than

cannot be written to, and read from, the EEPROM. The output from ATDC Sensor UN3 remains less than 1 .OV

during an F8 operation. The IU fuse is not blown during an F8 operation.

0.4V

0.4V.

Detection Timing

4.8V

when the Exposure Lamp is OFF and Scanner

4.8V

or more, or

or more, or less

T-15

1159SBT0302A

3-2. Troubleshooting Procedures

1159SBTO30201

A

1) COO: Main Drive Motors Failure to Turn

Relevant Electrical Parts

l

Main Drive Motor (Ml)

l

Power Supply Unit

l

Master Board (PWB-A)

(PUl)

Step Check Item

Does the voltage across

1

from

DC5V

to DCOV when the Start key is pressed?

Is the voltage across

2

Power Switch Sl is turned ON? Is the voltage across

3

is turned ON?

PJ4A-4

on PWB-A and GND change

PJ4A-3

on PWB-A and GND DCOV when

PJ4-1

on

PUl

and GND

DC24V

T-16

when

1159CWTAA

Result

NO

YES

Sl

NO

Action

Change PWB-A.

Change Ml.

Change

PUl.

2) C04:

Ozone Fan Motors Failure to Turn

I

Relevant Electrical Parts

l

Master Board (PWB-A)

1159C07TAA

Check

step

Does the voltage across

1

from DC1 2V to DC24V when the Stat-t kev is Dressed? Is the voltage across

2

when Sl is turned ON?

PJ13A-3

Item

PJ13A-1

on PWB-A and GND change

on PWB-A and GND

DC5V

Result

NO

I

YES

Actim

Change PWB-A.

I

Change M3.

I

Ii 59SBT030203A

3)

C40:

Exposure Lamp Malfunction

I

Relevant Electrical Parts

PJlF

l-2.l

I

PWB-F

1159COBTAA

SteteD

I

Is the source voltage being supplied across

1

and -BR on PWB-F?

Is the circuit across PJGF-1 and -2 on the LA1 side

2

conducting when

Check Item

PJGF

is removed from PWB-F?

CNl

T-18

F-GY

I

Result

NO

I

Action

Check the power line.

I

I I

1159SBT030204A

4)

C50:

Warming-up Failure

C51:

Abnormally Low Fusing Temperature

C52: Abnormally High Fusing Temperature

Relevant Electrical Parts

l

Fusing Thermistor

l

Fusing Thermoswitch

(THl)

(TSI)

TSI

 

. AVR (PWB-F)

l

Master Board (PWB-A)

y

Fusing Rol

ler

1

PJ5F

1159C09TAA

T-19

e

continuity

across

PJ4F

and

PJ5F

on

PWB-F

Change the

Fusing Unit.

Measure the

+C52

I

SteD

I

1

Is

THl

installed properly, or dirty? YES Reinstall or clean

Measure the resistance of

2

O?

resistance of THI.Isit

Check Item

THl

.

Is

infinite?

it 00 or close to

1

Result

I

YES Change

NO

Channe

Action

THl

.

THl

.

PWB-F or PWB-A.

1

T-20

1159SBT030205A

5)

C60:

Scanner Drive Malfunction

C61: Lens Drive Malfunction

(EP1031/EP1031

F)

I

l

Scanner Home Position Sensor

l

Lens Home Position Sensor (PC12)

I

Relevant Electrical Parts

(PCll)

l

Scanner Drive Motor (M4)

l

Lens Drive Motor (M5)

l

Master Board

fPWB-A\

I

T-21

1159CiOTAA

+C60

Step

I

Does the voltage across PJ

1

change from

Position Sensor Is

PJll

A

2

on PWB-A connected properly?

+C61

Step

I

Does the voltage across PJ

1

change from Sensor PC12 is blocked?

Is

PJ12A

2

on PWB-A connected properly? YES

Check Item

16A-5

DCXV

to DCOV when Scanner Home

PC1

1 is blocked?

Check Item

DCXV

to DCOV when Lens Home Position

on PWB-A and GND

17A-2

on PWB-A and GND

1

Result

YES

NO

I

Result

NO

1

Action

Change PWB-A or M4. Connect it

I

Change PWB-A or M5. Connect It properly.

orooerlv.

Action

I

T-22

1159SBT030206A

6)

CFI:

AE Sensor Malfunction

l

AE Sensor Board (PWB-E)

Relevant Electrical Parts

l

Master Board (PWB-A)

PJlE '

-

PWB-E

Check

!N?p

Is

the voltage across

1

DC4.8V

or more, or

Lamp is OFF and Scanner at home position

0.4V

item

PJ18A-2

on PWB-A and GND

or less when the Exposure

PJ16A

:

3 4

6

PWB-A

1159CllTAA

R@sult

YES

NO

I

Action

Change PWB-E.

Change PWB-A.

T-23

1159SST030207A

7) CF3: ATDC Sensor Malfunction

Relevant Electrical Parts

l

ATDC

Sensor

(UN3)

PWB-A

PJIOA

l

Master Board (PWB-A)

Is the voltage across

1

DC4.8V

or more, or

PJlOA-1

on PWB-A and GND

0.4V

or less?

T-24

1159C12TAA

I Result I

YES Change UN3.

f’.hanne

Action

PWR-A

115993T030203A

8) EO: EEPROM Malfunction

i

I

l

Master Board (PWB-A)

Step

Does

EO

1

2 3

appear again after the malfunction has been

reset?

Does EO appear during a copy cycle? YES Change EEPROM. Does

EO

appear when the Power Switch is turned ON? YES Change PWB-A.

Relevant Electrical Parts

Check Item Result Action

YES

I I

Change EEPROM.

T-25

1l59SET030209A

9) El: IU Toner Detection Failure E2: Blown IU Fuse Detection Failure

Relevant Electrical Parts

l

ATDC Sensor

(UN3)

El

0

Imaging Unit (IU)

l

Master Board

(PWB-A)

Step Check Item

1

Did you peel off the seal from the Toner Cartridge?NOPeel off the seal. Has the starter been loaded?

2

Result Action

YES

E2

Step

1

Check Item

Is the fuse blown?

Result

YES

Change

UN3 or PWB-A.

Action

Chanae the fuse or

-.

LA

PWB-A.

T-26

I

1159SST0303A

3-3. Power Malfunctions Power is not Turned ON (Control Panel Shows Nothing)

I

l

Power Switch

l

Noise Filter Board (PWB-D)

(Sl)

Relevant Electrical Parts

. AVR (PWB-F)

0

Power Supply Unit

l

MSC Board (PWB-B)

l

Master Board (PWB-A)

I

(PUI)

Step

1 Is the source voltage applied across 1 and 3 of

Is the source voltage being applied across 2 and 4 of

when it is turned ON?

Is the source voltage being applied across 1 and 2 of PJ3 on PUl when Sl is turned ON?

Is the voltage across

DC24V

when Sl is turned ON?

Is the voltage across GND

DC24V

Are PJ20A on PWB-A and properly?

6

Check Item

PJSA-1

to -3 on PWB-A and GND

PJSA-1,

when Sl is turned ON?

-2, and -5 on PWB-A and

PJl

B on PWB-B installed

T-27

Sl?

1159C13TAA

Result

I

Action

Sl

Change PWB-F.

NO

Change PUl,

NO

Check the wiring tween PUl and

NO

PWB-A and, if it is in-

tact, change

Change PWB-A, PWB-B, and the

YES

harness, in that order.

NO

)

Install them properly.

be-

PUl.

1149SAT0600A

IMAGE FAILURE

1159SBT0501A

5-1. Image Failure Troubleshooting

Image failures have many possible causes. For troubleshooting, it

is necessary to determine whether

ure is attributable to a basic cause or any other cause.

In this chapter, troubleshooting is divided into initial checks and troubleshooting procedures classified by image failure. If an image failure has occurred, first make the initial checks, then proceed to the corresponding image failure troubleshooting procedure.

1159SBT0502A

5-2, Initial Checks

1)

Place of installation

l

Is the source voltage normal? Does the voltage vary greatly?

l

Is the copier installed in a hot, humid place or in a place where temperatures vary sharply?

l

Is the copier installed in a dusty place?

l

Is the copier subjected to direct sunlight?

l

Is the copier level?

2)

COPY

paper

l

Is the recommended paper used?

*Load

recommended paper and make copies to see if the problem persists.

l

Is the paper damp?

*Load

new paper and make copies to see if the problem persists.

3)

Original

l

Does the original used have a reddish background or is it written in light pencil?

*Use

the Test Chart to check the image.

l

Is the original transparent or are transparencies being used?

&over

with white paper and make a copy.

l

Are the Original Glass and ADF Transport Belt dirty or scratched?

*If

dirty, clean with alcohol. If scratched, replace.

a

fail-

5) Adjustment items (registration, focus, AE level, etc.)

l

Among the adjustment items given in

DIS/REASSEMBLY,

ADJUSTMENT, is there any adjustment that

may remedy the image failure?

T-28

1149SST0503A

5-3. Troubleshooting Procedures Classified by Image Failure

<Image

Failure Samples>

1) Blank copy

4) Foggy background

7) Blank streaks or bands

5) Black streaks or bands

8) Void areas

3) Low image density

6) Black spots

9) Smear on back

-b

3C:DE

P 3C:DEI 1E 3C:DEI I! 3C:DEE

P 3C:DEI

4’~CDE

9BCDI ABWE ABLOE A3CDE

T-29

1

ABCDE

1149T012AA

1

1159SBT050301A

1) Blank Copy

Exposure Lamps

failure to turn ON

Voltage Unit

PC Drum

Voltage Unit HVl

Is the PC Drum properly grounded?

Is the developing bias contact normal?

Has condensation formed on the mirrors, lens, or PC Drum?

Are the mirrors installed

4

properly? Does the Exposure Lamp

5

liaht uo?

HVI

Charge Corona

Check

Item

and the

and

ooro-

I

Result

NO

YES

NO

Action

Clean or change the PC Drum.

Clean or replace the developing bias contact.

Clean the mirrors and lens, and run the Drum Dehum. operation.

Reinstall the mirrors.

Take the action for malfunction code

C40.

T-30

I

1159SBT050303A

3) Low Image Density

rid mesh normal?

dirty or covered

with con-

T-31

I

1159SST050304A

4) Foggy background

Cause

Cleaning failure

Optical failure

PC Drum failure

Developing failure

1159SRT050305A

I

Stet3

1

2

1

3

4

I-

5

6

c

Is the Cleaning Blade dirty with foreign matter, paper dust. etc. or is it scratched?

Are the mirrors and lens dirty?

Is the PC Drum dirty with foreign matter, etc.?

Is the PC Drum properly grounded?

Is the Sleeve Roller abnormally dirty?

Is the developing bias contact normal?

5) Black Streaks or Bands

Are the Comb Electrode and grid mesh dirty?

1

Cleaning failure

PC Drum failure

Optical failure

I

Is the Cleaning Blade dirty with foreign matter, paper

2

dust, etc., or is it scratched?

Is the PC Drum surface dirty or scratched?

3

Is the Upper Fusing Roller dirty or scratched?

Are the Upper Paper Sepa-

rator Fingers dirty or

formed? Are the mirrors and lens

dirty with foreign matter?

Check Item

de-

Resul;

YES

NO

YES

NO

I

Result

YES

Action

Change the Cleaning Blade.

Clean the mirrors and lens.

Clean or replace the PC

Drum. Change the Cleaning

Blade if necessary. Clean or change the PC

Drum.

Clean the Sleeve Roller. Check the Developer Scattering Prevention Seal to see if it is deformed or dirty.

Clean or change the developing bias contact.

Action

Clean or replace the PC Drum Charge Corona. Check the toner suction mechanism for operation.

Change the Cleaning Blade.

Change the PC Drum. If necessary, change the Cleaning Blade.

Clean or replace the Upper Fusing Roller.

Clean or replace the Upper Paper Separator Fingers.

Clean the mirrors and lens.

T-32

I

1159SBT050306A

6) Black Spots

Fusing failure

Developing failure

1159SBT050307A

r

2

3

4

5

7) Blank Streaks or Bands

Cause

Plugged Db

Drum charge failure

Image transfer ure

Image Erase Lamp lit at abnormal timing

fail-

I Step

1

2

3

4

Check Item

Is the PC Drum surface scratched or dirty with eign matter?

Is the Upper Fusing Roller dirty or scratched? YES

Is the amount of toner on the Sleeve Roller proper?

Is the toner-to-carrier ratio relatively high?

Is the Developer Scattering Prevention Seal deformed or dirty?

Check Item

Is Db plugged with foreign matter, caked toner, etc.? YES

Are the Comb Electrode and grid mesh dirty?

Is the Image Transfer Corona wire dirty?

for-

I

Result

YES

1

Result

YES

Action

Clean or change the PC Drum. Change the Cleaning Blade if necessary.

Check the Fusing Thermistors. Clean or change the Upper Fusing Roller.

Go to step 5.

Change the toner-to-carrier ratio.

Clean or change the Developer Scattering Prevention Seal.

Remove foreign matter. If the problem persists, change the developer.

Clean or change the PC Drum Charge Corona.

Clean or change the Image Transfer Corona.

Check the Image Erase Lamp.

Fusing failure

5

6

Clean or change the Upper Fusing Roller.

Clean

or change

Paper Separator

the Upper Fingers.

T-33

1159SBT050308A

8) Void Areas

Cause

Image transfer

ure

Damp copy paper

Small amount of toner supplied

Paper guide shorting

Fusing failure

1159SBT050309A

fail-

9) Smear on Back

Cause

Dirty Developing Unit

Dirty Image Transfer Corona

Dirty Fusing Unit

Step

1

2

5

6

Step

1

2

3

4

5

Check Item

Is the Image Transfer Coro-

na installed properly? Is the Image Transfer

na wire dirty?

Is the paper guide shorted to the frame?

Is the Lower Fusing Roller scratched or deformed?

Check Item Result Action

Is the bottom part of the Developing Unit dirty?

Is the Image Transfer na dirty?

Is the Pre-Image Transfer Guide Plate dirty?

Is the Fusing Unit Entrance Guide Plate dirty?

Are the Upper and Lower Fusing Rollers dirty?

Result Action

NC

Coro-

YES

NO

YES

Coro-

YES

Reinstall.

Clean or change the Image Transfer Corona wire.

Change the copy paper and instruct the user in how to store paper.

Check the Db value and amount of developer, and check the Bucket Roller for operation.

Connect the paper guide through the resistor to the frame.

Replace the Lower Fusing Roller.

Clean and check the oper Scattering Prevention Seal.

Clean the corona and check the Developing Unit.

Clean the guide plate and check the Developing Unit.

Clean or change the Upper and Lower Fusing Rollers.

Devel-

T-34

I

1159SBTOOOEA

MINOUA

Copyright

1997

MINOLTA

Printed in Japan

Use of this manual should

be strictly supervised to avoid disclosure of confidential information,

MINOLTA

Co., Ltd.

CO,, LTD,

I

1159-7998-l

1 97074370

Printed in Japan

Minolta 1030, CS1030, 1031, CS1031 Trobleshooting

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

INTRODUCTION

PAPER TRANSPORT FAILURE

5) SDH Misfeed

MALFUNCTIONS

Exposure Lamp Malfunction

IMAGE FAILURE