TOSHIBA 2460 SERVICE HANDBOOK

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SERVICE HANDBOOK

DIGITAL PLAIN PAPER COPIER

AUTOMATIC DUPLEXING UNIT

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2460

MD-5004

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GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR THE COPIER 2460

The installation and service should be done by a qualified service technician.

1. Transportation/Installation

• When transporting/installing the copier, employ two persons and be sure to use the positions as indicated below. The copier is fairly heavy and weighs approximately 83 kg (183 lb), therefore pay full attention when handling it.

4 portions

2. Installation

• Be sure to use a dedicated outlet with AC 115V/15A (220V, 240V/10A) or more for its power source.

• The copier must be grounded for safety. Never ground it to a gas pipe or a water pipe.

• Select a suitable place for installation. Avoid excessive heat, high humidity, dust, vibration and direct sunlight.

• Also provide proper ventilation as the copier emits a slight amount of ozone.

• To insure adequate working space for the copying operation, keep a minimum clearance of 80 cm (32”) on the left, 80 cm (32”) on the right and 10 cm (4”) in the rear.

• Secure the lifting handles with the fixing plates and screws after the installation is finished.

3. Service of Machines

• Basically, be sure to turn the main switch off and unplug the power cord during service.

• Be sure not to touch high-temperature sections such as the exposure lamp, the fuser unit, the damp heater and their periphery.

• Be sure not to touch high-voltage sections such as the chargers and the high-voltage transformer.

• Be sure not to touch rotating/operating sections such as gears, belts, pulleys, etc.

• When servicing the machines with the main switch turned on, be sure not to touch live sections and rotating/operating sections. Avoid exposure to laser radiation.

• Use suitable measuring instruments and tools.

4. Main Service Parts for Safety

• The breaker, door switch, fuse, thermostat, thermofuse, thermistor, etc. are particularly important for safety. Be sure to handle/install them properly.

5. Cautionary Labels

• During servicing, be sure to check the rating plate and the cautionary labels such as “Unplug the power cord during service”, “Hot area”, “Laser warning label” etc. to see if there is any dirt on their surface or whether they are properly stuck to the copier.

6. Disposition of Consumable Parts/Packing Materials

• Regarding the recovery and disposal of the copier, supplies, consumable parts and packing materials, it is recommended to follow the relevant local regulations or rules.

7. When parts are disassembled, reassembly is basically the reverse of disassembly unless otherwise noted in this manual or other related documents. Be careful not to reassemble small parts such as screws, washers, pins, E-rings, toothed washers in the wrong places.

8. Basically, the machine should not be operated with any parts removed or disassembled.

9. Precautions Against Static Electricity

• The PC board must be stored in an anti-electrostatic bag and handled carefully using a wristband,

because the ICs on it may become damaged due to static electricity.

Caution: Be sure to turn off the copier before attaching the wrist-band.

Always remove the wrist-band before applying power.

1. ADJUSTMENT ITEMS

1.1 Error Codes

When either the CLEAR PAPER ( ) or CALL SERVICE ( ) symbol appears, press the CLEAR/ STOP and “8” keys simultaneously and the corresponding error code will be displayed. To clear the error code, turn off the machine.

Group

Transporting jam inside the copier

Paper feeding jam

Paper transporting jam

Paper jam if some cover is opened during copying

Original transporting jam at the ADF

Error code

E01 E02 E03 E04 E05 E08 E09 E11 E12 E13 E14 E15 E16 E17 E19 E21 E22 E23 E24 E25 E41 E42 E43 E44 E45 E46 E71 E72 E73 E79

Machine status Paper jam inside the copier Paper jam near the fuser unit Paper remaining inside the machine at power on The front cover is opened during copying Paper jam near the aligning roller Paper jam at the stacking area inside the ADU Code error/system board Paper feeding jam at the ADU Manual feeding jam 1st cassette (Upper cassette) feeding jam 2nd cassette (Lower cassette) feeding jam 3rd cassette (PFP upper cassette) feeding jam 4th cassette (PFP middle cassette) feeding jam 5th cassette (PFP lower cassette) feeding jam LCF feeding jam Paper jam at the LCF Paper jam inside the copier Paper jam near the aligning roller PFP emergency stop Paper jam at the PFP Copier front cover is opened during copying PFP side door is opened during copying ADU is withdrawn during copying Copier side door is opened during copying LCF unit is opened during copying Manual feed unit is opened during copying Original feeding jam at the feeding area of the ADF Original transporting jam at the transporting area of the ADF Original exiting jam at the exiting area of the ADF Original prefeeding jam

September 1997 © TOSHIBA CORP. 1 - 1 2460 ADJUSTMENT

Group

Paper jam at the finisher

CALL SERVICE from the drive system

CALL SERVICE from the paper feeding system

CALL SERVICE from the optical system

CALL SERVICE from the process system Fuser unit area

CALL SERVICE from communication

CALL SERVICE from ADF

CALL SERVICE from others

CALL SERVICE from the laser optical system

Error code

EA1 EA2 EA4 EA5 EA6 C01 C04 C05 C1 1 C12 C13 C14 C15 C16 C17 C18 C21 C26

C33

C41 C43

C44

C45 C55 C56 C57 C58 C72 C73 C74 C94

C99 CA1 CA2

Machine status Transporting delay jam Transporting stationary jam Door open jam Staple jam Early arrival jam Copier main motor operation abnormal PFP main motor operation abnormal ADU main motor operation abnormal ADU side motor operation abnormal ADU end motor operation abnormal Copier upper cassette tray operation abnormal Copier lower cassette tray operation abnormal PFP upper cassette tray operation abnormal PFP middle cassette tray operation abnormal PFP lower cassette tray operation abnormal LCF tray operation abnormal Carriage initialization error Exposure lamp disconnection detected or exposure peak detection error Easy setup has failed

Abnormal thermistor or heater disconnection when power is on Warming up mode after disconnection judgement, or abnormal thermistor after ready Warming up mode after disconnection judgement, or heater disconnection after ready Heater end thermistor disconnection Communication error between ADF and MCPU Communication error between PFC and MCPU Communication error between MCPU and IPC Communication error between IPC and the finisher Poor adjustment by the aligning sensor detected EEPROM poor initialization Poor adjustment by the exit/reverse sensor detected MCPU is abnormal PFC microcomputer is abnormal Polygonal motor is abnormal HSYNC is abnormal

2460 ADJUSTMENT 1 - 2 September 1997 © TOSHIBA CORP.

Group

CALL SERVICE from the finisher

CALL SERVICE from optional units

Error history(08-253) (Display example) EA1 970826175732 6 4 6 4 236210000000

Error code YYMMDDHHMMSS MMM NNN ABCDEFGHIJKL

digit 12digit(Date,time) 3digit 3digit 12digit(Copy mode)

Copy mode A Paper feed cassette

0 : Non-select 1 : SFB 2 : LCF 3 : PFP(U) 4 : PFP(M) 5 : PFP(L) 6 : ADU 7 : Copier(U) 8 : Copier (L)

B Paper size code

0 : A5 1 : A5-R 2 : ST-R 3 : LT 4 : A4 5 : B5-R 6 : LT-R 7 : A4-R 8 : OTHER/UNIV 9 : B5 A : FOL/COM B : LG C : B4 D : LD E : A3

C Sort mode

0 : Non-select 1 : Group 2 : Sort 6 : Staple Sort

D DF mode

0 : Not used 1 : AUTO FEED(SADF) 2 : STACK FEED

E APS/AMS mode

0 : Non-select 1 : APS 2 : AMS

F Deplex mode

0 : Non-select 1 : Book 2 : Dual-sided/One-sided 4 : Dual-sided/Dual-sided 8 : One-sided/Dual-sided

G Not used

0 : Not used

H Image shift

0 : Not used 1 : Book 2 : LEFT 4 : RIGHT

I Editing

0 : Not used 1 : Masking 2 : Triming

J Edge-erase/Dual-page

0 : Not used 1 : Edge-erase 2 : Dual-page 3 : Edge-erase&Dual page

K Not used

0 : Not used

L Function

0 : Standard PPC 1 : Extended PPC 2 : FAX Tx 3 : FAX Rx 4 : GDI 5 : DSS

MMM Primary scanning reproduction ratio(Y direction)

Hexadecimal

NNN Secondary scanning reproduction ratio(X direction)

Hexadecimal

Setting mode, code "253" displays latest 8 error data

Error code

CB1 CB2 CB3 CB4 CB5 CB6 CB7

F10

Machine status Feed motor of the finisher is abnormal Delivery motor of the finisher is abnormal Elevation motor of the finisher is abnormal Alignment motor of the finisher is abnormal Staple motor of the finisher is abnormal Staple shift motor of the finisher is abnormal Distance sensor of the finisher is abnormal HDD initialization error

(Reproduction ratio)

September 1997 © TOSHIBA CORP. 1 - 3 2460 ADJUSTMENT

1.2 Self-Diagnosis Modes

Mode

All-LEDs-lit

Aging mode

Test mode

Test print mode Adjustment mode Aging mode

Setting mode

Input code method

“01”

“02”

“03”

“04”

“05”

“07”

“08”

All LEDs on the control panel are lit.

Aging (RADF does not operate)

Motor test and input/output check

Test print

Adjustment of items

Aging (includes RADF)

System switchover and setting of each

Definition

priority mode, PM counter, etc.

Cleaning

C/S

“09”

Display after selection

AGING MODE

100%

TEST MODE

100%

TEST PRINT MODE

100%

TEST MODE

100%

AGING MODE 2

100%

TEST MODE

100%

Note: To access the desired diagnostic mode, turn on the power switch while pressing the appropriate keys.

•All-LEDs-lit mode (01):

0 1

PWR

All LEDs light

START START

Key check

•Aging mode (02 or 07):

0 2 0 9

PWR

0 7

PWR

Aging

C/S

START

•Test mode (03): Refer to 1.2.1 and 1.2.2.

•Test print mode (04): Refer to “1.2.3 Test print mode”.

•Adjustment mode (05): Refer to “1.2.4 Adjustment mode”.

•Setting mode (08): Refer to “1.2.5 Setting mode”.

Notes: C/S: Press the CLEAR/STOP key

PWR: Turn on the power switch INT: Press the INTERRUPT key E/S: Press the ENERGY SAVER key

C/S

Exit

2460 ADJUSTMENT 1 - 4 September 1997 © TOSHIBA CORP.

Warming up

Normal

“C”

“01”

All the displays on the control panel lit

Power ON

“02”

“07” (With ADF)

Aging

“03”

Test mode

“05” “08”

Adjustment mode

Setting mode

“04”

Test print mode

Standby

“S” “C”

Stops momentarily

“09”

“09” “09”

“S”: START key on. “C”: CLEAR/STOP key on.

“05”

“09”

Quick reference chart for self-diagnostic mode

*1 When the copier is in the adjustment mode which you entered by turning on the power switch while

pressing keys “0” and “5” simultaneously, pressing keys “0” and “9” simultaneously will make the copier exit into the standby mode. In this standby mode only , can the adjustment mode be accessed repeatedly by simply entering “0” and “5”.

*2 While all the displays on the control panel are lit (“01” mode), copying is disenabled.

When the copier enters the standby status by the pressing of the CLEAR/STOP key, copying is enabled.

September 1997 © TOSHIBA CORP. 1 - 5 2460 ADJUSTMENT

1.2.1 Input signal check (Test mode 03)

In the “03” test mode, the following input signal conditions can be checked by pressing the appropriate keys.

[A]

When the ENERGY SAVER key is OFF status (LED indicating the energy saver mode is out)

LED

Key

[1] Key

[2] Key

[3] Key

[4] Key

[5] Key

[6] Key

[7] Key

[8] Key

[9] Key

[0] Key

Original size LED Copy size LED

A4/LD A3/LG B4/LT A5/ST A4/LD A3/LG B4/LT A5/ST

Front cover

–

open

–

HTRDY-0 Heater lamp OFF

–

PRTM-1 Platen cover closed

–

SIZCU-3

SYZPF1-3

SYZPF3-3

–

SCNCNT-0 Scanner

–

unconnected PSTP-1

–

Paper stop sensor paper supplied

–

APS3 APS sensor input 3

APS2 APS sensor input 2

Size width sensor 2 SIZCU-2

SIZCU-1

Copier upper size SW

SYZPF1-2

SYZPF1-1

PFP upper size SW

SYZPF3-2

SYZPF3-1

–

TFUL-0 Toner-full SW OFF

–

APS1 APS sensor input 1

Size width sensor SIZCU-0

SYZPF1-0

SYZPF3-0

CLEAR Coin vender clear PFACK PFC ACK

DFACK ACK signal from ADF HSYNC-1 HSYNC error

–

Empty sensor SIZCL-3

SYZPF2-3

SSIZE-3

–

EXITSW-0 Paper exit SW detected paper FNCNT-0 Finisher unconnected

PMTLK-0 POL-MOT abnormal rotation ADCNT-0 ADF unconnected MMPLL MAIN-MOT

–

abnormal rotation APSR APS sensor input R

Door sensor open SIZCL-2

APSC

APS sensor

input C

Exit/Reverse

sensor

SIZCL-1

Copier lower size SW

SYZPF2-2

SYZPF2-1

PFP middle size SW

SSIZE-2

SSIZE-1

–

CTRIN-0 Key counter unconnected PSTPR Paper feeding status signal DEVCNT-0 Dev unit unconnected HOME-1 Carriage home

Aligning sensor SIZCL-0

SYZPF2-0

SSIZE-0

Bypass width size SWPFP lower size SW

–

Remarks MCPU

C2XB IN2

C2XB IN0

MCPU PE

MCPU P8

MCPU IN1 Lighting/ No paper ADF → MCPU Lighting/ Paper PFC → MCPU Paper size Lighting/ SW off PFC → MCPU Paper size Lighting/ SW off PFC → MCPU Paper size Lighting/ SW off

LED lit in above condition (Signal level : H)

ORIGINAL COPY

A4/LD

A3/LG

B4/LT

A5/ST

UNIVERSAL/

OTHER

2460 ADJUSTMENT 1 - 6 September 1997 © TOSHIBA CORP.

[B] When the ENERGY SAVER key is ON status (LED indicating the energy saver mode is lit)

LED

Key

[1] Key

[2] Key

[3] Key

[4] Key

[5] Key

[6] Key

[7] Key

[8] Key

[9] Key

[0] Key

A4/LD A3/LG B4/LT A5/ST A4/LD A3/LG B4/LT A5/ST

–

SBFSW Manual feed SW detected no paper

–

HTRTH-7

DRMTH-7

HTRDY2-7

Original size LED Copy size LED

TUPCL Copier lower tray lifted up SCOVDOR Manual feed door open

TUPPF2 PFP middle tray lifted up PPLL-OK PFP motor abnormal rotation

AD-CNT ADU unconnected

HTRTH-6

DRMTH-6

HTRDY2-6

PEMPCL Copier lower paper empty LC-KEY LCF tray down key OFF PEMPPF2 PFP middle paper empty PF-CNT PFP unconnected

–

APLL-OK ADU motor abnormal rotation

–

HTRTH-5

DRMTH-5

HTRDY2-5

PSTPCL Copier lower paper stopped LC-CNT LCF unconnected

PSTPPF2 PFP middle paper stopped PFDOR PFP side door opened

–

SIDSW ADU side SW ON

–

HTRTH-4

DRMTH-4

HTRDY2-4

LED lit in above condition (Signal level : H)

–

UCVDOR Copier side door opened LCDOR LCF door open

–

ENDSW ADU end SW ON

–

HTRTH-3

DRMTH-3

HTRDY2-3

TUPCU Copier upper tray lifted up TDWNLC LCF tray lifted down

TUPPF1 PFP upper tray lifted up TUPPF3 PFP lower tray lifted up

–

PJAM1AD ADU Jam SW ON

–

HTRTH-2

DRMTH-2

HTRDY2-2

–

PSTPCU Copier upper paper stopped PEMPLC LCF paper empty

PSTPPF1 PFP upper paper stopped PSTPPF3 PFP lower paper stopped

–

PEMPAD Paper in ADU

–

HTRTH-0

DRMTH-0

HTRDY2-0

PEMPCU

Copier upper

paper empty

TUPLC

LCF tray

lifted up

PEMPPF1

PFP upper

paper empty

PEMPPF3

PFP lower

paper empty

HTRTH-1

DRMTH-1

HTRDY2-1

1: Fuser thermistor condition

2: Drum thermistor condition

3: Fuser thermistor-2 condition

Remarks PFC →

MCPU A

PFC → MCPU B

PFC → MCPU C

PFC → MCPU D

–

PFC → MCPU ADU

–

MCPU

PC* MCPU

PC*

ORIGINAL COPY

A4/LD

A3/LG

B4/LT

A5/ST

UNIVERSAL/

OTHER

0 3

START

ENERGY SAVER

Digital keys

LED ON

PWR

Note: 03 → With initialization before test mode is entered

September 1997 © TOSHIBA CORP. 1 - 7 2460 ADJUSTMENT

0 9

(To clear)

1.2.2 Output signal check (03)

In the “03” test mode, the following output signal conditions can be checked by entering appropriate codes.

Operation

Code Function Code Function

101 Main motor ON*

(Transfer, Separation and Discharge chargers, and

also PCC are ON) 102 Toner motor ON 152 OFF 1 103 Polygonal motor (600 dpi) ON 153 OFF 1 104 Polygonal motor (400 dpi) ON 154 OFF 1 105 Polygonal motor (16 x 15.4) ON 155 OFF 1 106 Polygonal motor (15.4 x 16) ON 156 OFF 1 107 Polygonal motor (at standby) ON 157 OFF 1 108 Copier aligning clutch ON 158 OFF 1 109 PFP main motor ON 159 OFF 1 110 ADU main motor ON 160 OFF 1 111 Scraper solenoid ON 161 OFF 201 Copier upper cassette feed clutch ON/OFF 3 202 Copier lower cassette feed clutch ON/OFF 3 203 Intermediate transporting clutch ON/OFF 3

(PFP transporting clutch) 204 Manual feed clutch ON/OFF 3 222 ADU feed clutch ON/OFF 3 223 ADU stack clutch ON/OFF 3 225 PFP transporting clutch ON/OFF 3 226 PFP upper cassette feed clutch ON/OFF 3 227 PFP middle cassette feed clutch ON/OFF 3 228 PFP lower cassette feed clutch ON/OFF 3 241 Total counter count-up (count-up only) 2 242 Copier upper cassette tray motor lift UP 2 243 Copier lower cassette tray motor lift UP 2 250 Developer bias transformer ON/OFF 3 251 Main charger transformer ON/OFF 3 252 Transfer charger transformer ON/OFF 3 253 Separation charger transformer ON/OFF 3 254 PCC transformer ON/OFF 3 255 Transfer guide bias ON/OFF 3 256 Laser ON/OFF 3 257 Exit fan motor ON/OFF 3 258 Duct fan motor 1 ON/OFF 3 261 Scanning motor ON 2

(automatically stops at the limit position, its speed is variable using the ZOOM keys)

1: Functional when the developer unit is not installed.

151 OFF 1

2460 ADJUSTMENT 1 - 8 September 1997 © TOSHIBA CORP.

procedure

group

Operation

Code Function

262 Document (indicator) motor ON 2 263 Halogen lamp ON 3

(automatically goes off after 6 seconds, and the fan motors rotate at low speed) 264 Optical fan motor F ON/OFF 3 265 Optical fan motor R ON/OFF 3 270 LCF feed motor ON/OFF 2 271 LCF tray motor lift UP/DOWN 2 272 ADU side motor ON/OFF 3 273 ADU end motor ON (Come/Go) 2 274 ADU stack solenoid ON/OFF 3 275 PFP upper cassette tray motor lift UP 2 276 PFP middle cassette tray motor lift UP 2 277 PFP lower cassette tray motor lift UP 2 281 ADF pick-up roller rotation ON/OFF 3 282 ADF aligning roller rotation ON/OFF 3 283 ADF transport belt CW rotation ON/OFF 3 284 ADF transport belt CCW rotation ON/OFF 3 401 Memory size of the PM board is checked 2 402 Reading/Writing operation of the PM board is checked 2

procedure

group

<Operation procedure group> Group (1)

PWR

Code

START

Group (2)

PWR

Code

START

Group (3)

PWR

Code

START

Operation

(ON)

Operation

(ON)

Operation

(ON)

Stop code

START

C/S

Operation

(OFF)

Operation

(OFF)

Test mode standby

Warm-up

C/S

Warm-up

Test mode standby

Warm-up

September 1997 © TOSHIBA CORP. 1 - 9 2460 ADJUSTMENT

1.2.3 Test Print (Test Mode “04”)

In test mode “04,” you can print the test pattern generated by the following ASIC codes.

Code ASIC Test Pattern type

111 SARAH Primary scanning, 33 gradation (2nd step), error diffusion 113 SARAH Secondary scanning, 33 gradation (2nd step), error diffusion 142 HPS 2-dot grid pattern (Pitch 10 mm) 183 SARAH Primary scanning, 33 gradation (2nd step), + dither process, for fax 184 SARAH Secondary scanning, 33 gradation (2nd step), + dither process, for fax

0 4

PWR

Note: Though errors are displayed when generated, recovery is not carried out. This is remedied by turning the

Code

power OFF then ON again.

START

Operation

(Test print)

C/S

0 9

Warming up

2460 ADJUSTMENT 1 - 10 September 1997 © TOSHIBA CORP.

1.2.4 Adjustment mode (05)

In this mode, the following adjustment items can be corrected or changed. T o access this code, turn on the power while pressing the “0” and “5” keys.

Code Adjustment Mode

200 Auto-toner automatic adjustment ALL – – • Increasing the value increases

201 Auto-toner manual adjustment ALL 128 0~255 The auto toner sensor adjust- 2

205 Developer bias, DC adjustment ALL 174 0~255 The transformer output is aug- 2 210 Grid voltage initial value adjustment ALL 114 0~255 mented by increasing the value 220 Transfer, DC output, High, adjustment ALL 125 0~255 by “1”. 221 Transfer, DC output, Center, adjustment ALL 75 0~255 222 Transfer, DC output, Low, adjustment ALL 75 0~255 230 Separation, AC output, High, adjustment ALL 156 0~255 231 Separation, AC output, Center, adjustment ALL 156 0~255 232 Separation, AC output, Low, adjustment ALL 62 0~255 240 Pre-Cleaning Discharge, AC output adjustment ALL 142 0~255 (Note 2) 261 Laser power, 600 dpi, initial value adjustment ALL 58 0~255 2 304 Scanner secondary scanning reproduction ratio

305 Scanner secondary scanning deviation ALL 135 85~171 If the value is increased by “1”, 1

306 CCD primary scanning deviation ALL 85 5~251 If the value is increased by “1”, 1

310 Halogen lamp light on voltage setting ALL 55 50~70 3 313 Original leading edge image deletion

314 Original leading edge image deletion

Standard PPC

Extended PPC

Initial

Allowance Contents

value

the sensor output.

•The output is set in the range of 2.35~2.45V automatically after changing the value and 2 minutes after starting this mode. (Note 1)

ment value can be displayed.

128 0~255 If the value is increased by “1”, 1

the reproduction ratio of the paper feeding direction is enlarged by approx. 0.1522%.

the image shifts approx. 0.1213 mm to the trailing edge of the paper.

the image shifts approx. 0.0423 mm to the front side.

128 128~255 If the value is increased by “1”, 1

the leading edge void is enlarged by approx. 0.1213 mm for a standard copy.

128 128~255 If the value is increased by “1”, 1

the leading edge deletion is enlarged by approx. 0.1213 mm for a special function copy.

Operation procedure

group

(Note 1): Refer to 1.3. (Note 2): Functional with the developer unit removed and the service jig attached. However, the jig is not necessary for the devel-

oper bias adjustment. Refer to 1.9.

September 1997 © TOSHIBA CORP. 1 - 11 2460 ADJUSTMENT

Code Adjustment Mode

315 Original leading edge void adjustment ALL 0 0~255 0.04233mm/count 1 340 Reserved 350 ADF single-sided original stop position ALL 8 0~15 1 351 ADF two-sided original stop position ALL 8 0~15 1 356 ADF EEPROM initialization, ADF sensor ALL – – 4

automatic adjustment

400 Polygonal motor rotation, fine adjustment, 600dpi

401 Polygonal motor rotation, fine adjustment, 600dpi GDI 128 114~142

405 Polygonal motor rotation, fine adjustment, 600dpi

410 Laser starting position, 600dpi PPC 80 0~255 If the value is increased by “1”, 5

412 Laser starting position, 400dpi GDI 96 0~255 If the value is increased by “1”, 5

421 Secondary scanning reproduction ratio, main PPC 140 1~255 If the value is increased by “1”, 5

motor speed, fine adjustment the reproduction ratio of the

430 Top margin

431 Left margin

432 Right margin

433 Bottom margin

435 Reserved 436 Reserved 437 Reserved

Standard PPC

Extended PPC

Standard PPC

Initial

Allowance Contents

value

128 114~142 If the value is increased by “1“, 1

the primary scanning reproduction ratio is enlarged by approx

0.225%.

128 114~142 If the value is increased by “1“, 1

the primary scanning reproduction ratio is increased by approx.

0.225%.

the effective image data writing area on the drum is shifted by

0.0423 mm to the primary scan-

ning direction.

the effective image data writing area on the drum is shifted by

0.0635 mm to the primary scan-

ning direction.

paper feeding direction is enlarged by approx. 0.0315%.

0 0~255 If the value is increased by “1”, 1

the white area of the leading edge is increased by approx.

0.04233 mm.

0 0~255 If the value is increased by “1”, 1

the white area of the left edge is increased by approx.

0.04233 mm.

0 –94~255 If the value is increased by “1”, 1

the white area of the right edge is increased by approx.

0.04233 mm.

0 –94~255 If the value is increased by “1”, 1

the white area of the trailing edge is increased by approx.

0.04233 mm.

Operation procedure

group

2460 ADJUSTMENT 1 - 12 September 1997 © TOSHIBA CORP.

Code Adjustment Mode

438 Reserved 440 Registration, Copier upper cassette ALL 8 0~15 If the value is increased by “1”, 5 441 Registration, Copier lower cassette ALL 13 0~40 the registration position of the 442 Registration, Bypass ALL 8 0~15 image is shifted by approx. 0.5 443 Registration, LCF ALL 8 0~15 mm to the paper leading edge. 444 Registration, PFP ALL 8 0~15 445 Registration, ADU ALL 8 0~15 450 Aligning value, Copier upper cassette, long size ALL 14 0~31 Increasing the value by “1” en- 1 451 Aligning value, Copier upper cassette, short size ALL 16 0~31 larges the aligning by 0.8 mm. 452 Aligning value, Copier lower cassette, long size ALL 14 0~31 453 Aligning value, Copier lower cassette, short size ALL 16 0~31 454 Aligning value, ADU, long size ALL 14 0~31 455 Aligning value, ADU, short size ALL 16 0~31 456 Aligning value, PFP ALL 14 0~31 457 Aligning value, LCF ALL 14 0~31 458 Aligning value, BYPASS ALL 22 0~31 500 Manual exposure, fine adjustment, Center value Standard 128 0~255 If the value is increased, the 1

PPC (Photo/Text) 501 Manual exposure, fine adjustment, Center value 502 Manual exposure, fine adjustment, Center value Standard 128 0~255

503 Reserved 504 Reserved 505 Manual exposure fine adjustment, PPC 23 0~255 If the value is increased, the 1

Light side step value

506 Manual exposure fine adjustment, PPC 20 0~255 the light side of the exposure

Light side step value (Photo) indicator.

507 Manual exposure fine adjustment, PPC 25 0~255

Light side step value (Text)

508 Manual exposure fine adjustment, PPC 18 0~255 If the value is increased, the 1

Dark side step value

509 Manual exposure fine adjustment, PPC 20 0~255 the dark side of the exposure

Dark side step value (Photo) indicator.

510 Manual exposure fine adjustment, PPC 20 0~255

Dark side step value (Text)

511 Automatic exposure fine adjustment

512 Automatic exposure fine adjustment 513 Automatic exposure fine adjustment Standard 128 0~255

514 Reserved 515 Reserved 580

Automatic gamma adjustment PPC – – Corrects the image quality after 5

PPC (Photo)

PPC (Text)

(Photo/Text)

Standard PPC

(Photo/Text)

PPC (Photo)

PPC (Text)

Initial

Allowance Contents

value

image is darkened at the cen-

128 0~255 ter of the exposure indicator.

image is further lightened on

image is further darkened on

128 0~255 If the value is increased, the 1

image is darkened.

128 0~255

reading the test pattern of the test print for adjustment. (Note 3)

Operation procedure

group

September 1997 © TOSHIBA CORP. 1 - 13 2460 ADJUSTMENT

Code Adjustment Mode

590 Gamma data slope correction

591 Standard

592 Standard

593

594 Extended

595 Extended

620 HPF intensity setting PPC 0 0~90

621 HPF intensity setting 622 HPF intensity setting

(Note 3): Refer to 1.6. (Note 4): Standard PPC :Basic specification PPC

Extended PPC:Extended specification PPC brought by the PM board “PPC” :Includes “Standard PPC” and “Extended PPC” “GDI”, “DSI” :For optional board “ALL” :Includes “Standard PPC”, “Extended PPC”, “PPC”, “GDI” and “DSI”

Standard PPC

(Photo/Text)

PPC (Photo)

PPC (Text)

Extended PPC

(Photo/Text)

PPC (Photo)

PPC (Text)

(Photo/Text)

PPC (Photo)

PPC (Text)

Initial

Allowance Contents

value

0 0~9 If the value is increased, the 1

0 0~90 0 0~90

image is darkened.

1st digit: 0 (fixed) 2nd digit:0:Use default value

1~9: Change the intensity

(If the value is increased, sharpness is increased)

Operation procedure

group

2460 ADJUSTMENT 1 - 14 September 1997 © TOSHIBA CORP.

<Operation procedure group> Group 1

0 5

Code START E/S

PWR

Group 2

0 5

Code ADJUST

PWR

Group 3

0 5

Code START INT

PWR

Group 4

0 5

Code START

PWR

START

(Digital keys)

(If it is not change)

ADJUST

(Digital keys)

(To correct)

(25% or 400% key) Exit

ADJUST

Initializing/Automatic adjustment

C/S

Memory set

START

INT

0 9

Manual

Adjustment

To correct

2 seconds

Memory set

C/S

0 9

Exit**Test copyMemory set

0 9

Exit

0 9

ExitEnds in

Group 5

When the output pattern

0 5

PWR

** Test copying is not available using the E/S key in the duplex copy mode.

In this case, the adjustment mode must be cleared by inputting “09”; then duplex copying can be performed in the normal way.

Cassette selection

Output pattern

Selection

[Digital keys] 1: Code 401, 410, 412, 413, 414, 421, 422 2: Code 580

FAX

Code

START

selection is “1”

ADJUST

(Digital keys)

(To correct)

INT

Memory

set

C / S

Exit

September 1997 © TOSHIBA CORP. 1 - 15 2460 ADJUSTMENT

1.2.5 Setting mode (08)

In this mode, the various special modes listed in the Setting Code List can be set or changed.

0 8

Code

START

PWR

Code Name Mode Initial Allowance Remarks

200 Internal timer setting ALL — 13 digit Ex)

201 Destination ALL EUR=0 0~3 0: EUR

202 External mounted counter selection ALL 0 0~3 0: No external counter is mounted

204 All clear ALL 3 0~10 0: Not functional

205 Automatic power save ALL 0 0~15 0 = Not functional, 1~5 = Setting value x 30 sec.

206 Automatic power off ALL EUR=20 0~20 0 = 3 min, 1 = 5 min, 2 = 10 min, 3 = 15 min,

209 Background job starting time ALL 1 0~10 1~10: Set number × 15 sec. 250 Telephone number ALL 0 14 digit “–” is input by [HELP] or [INFO] key 251 PM counter, setting value ALL 0 0~999999 252 PM counter, current value ALL 0 0~999999 253 Error history indication ALl – – See page 1-3 254 ADU/Copier cassette loading status ALL 0 0~3 0: Automatic

Set/change a value

value

UC=1 1: UC Other=3 2: JPN

UC=9 4 = 20 min, 5 = 25 min, 6 = 30 min, 7 = 40 min,

INT

Memorizing

9 7 0 9 0 1 5 1 3 2 7 4 8

Y ear ↑ Date ↑ Hour ↑Second

Month Day Minute

3: Other

1: Coin controller 2: Key card 3: Key counter

1~10: Set number × 15 sec.

6 = 3 min, 7 = 4 min, 8 = 5 min, 9 = 7 min, 10 = 10 min, 11 = 15 min, 12 = 20 min, 13 = 30 min, 14 = 45 min, 15 = 60 min

8 = 50 min, 9 = 60 min, 10 = 70 min, 11 = 80 min, 12 = 90 min, 13 = 100 min, 14 = 110 min, 15 = 120 min, 16 = 150 min, 17 = 180 min, 18 = 210 min, 19 = 240 min, 20 = Not functional

1: Copier upper cassette is loaded 2: ADU is loaded 3:

Neither ADU nor copier upper cassette is loaded

0 9

Clear

2460 ADJUSTMENT 1 - 16 September 1997 © TOSHIBA CORP.

Code Name Mode Initial Allowance Remarks

value

255 PFP loading status ALL 0 0~4 0: Automatic 1: PFP has 1 cassette

2: PFP has 2 cassettes 3: PFP has 3 cassettes 4: PFP is not loaded

256 LCF paper size ALL EUR=0 0~2 0: A4

UC=1 1: LT

2: B5

259 Acceptable copy mode for the coin ALL 0 0~2 0: Normal copying

controller 1: Not accepts a large size paper copying

Not accepts a large size paper and a X-Y zoom copying

300 Maximum multiple copying ALL 0 0~2 0: 999

1: 99

2: 9 351 Electronic counter ALL 0 0~999999 352 A3/LD double count ALL 0 0~1 0: Single count

1: Double count

Thermistor status counter

400

401 Drum life counter ALL 0 0~999999 (Counts up according to the drum rotation) 402 Power-on time counter ALL 0 9 digit Hour (5 digit), Minute (2 digit), Second (2 digit) 403 Fuser running counter ALL 0 0~999999 Synchronizes with the total counter

404 Developer material counter ALL 0 0~999999 Synchronizes with the total counter

405 Drum potential control ALL 7 0~7 0 bit: Grid potential temperature correction

(Counter correction) 1 bit: Grid potential life correction

406 Pre-running starting time ALL 0 0~7 0 = Not functional

407 Pre-running time ALL 2 0~10 0 = Not functional

Pre-running time at the thick paper

408

410 Fuser temperature at copying ALL 10 4~13 4: 170°C, 5: 175°C, 6: 180°C, 7: 185°C,

411 Fuser temperature at ready ALL 7 0~7 0: 170°C, 1: 175°C, 2: 180°C, 3:185°C,

412 Fuser temperature in the energy ALL 4 0~5 0: OFF, 1: 120°C, 2: 130°C, 3: 140°C, 4: 150°C,

saver mode 5: 160°C

ALL 0 0~9 0: No error has occurred

1~9: Error has occurred

(Double count at long size)

2 bit: Laser output drum life correction

1 = 30 sec, 2 = 35 sec, 3 = 40 sec, 4 = 45 sec,

5 = 50 sec, 6 = 55 sec, 7 = 60 sec

1 = 5 sec, 2 = 10 sec, 3 = 15 sec, 4 = 20 sec,

5 = 25 sec, 6 = 30 sec, 7 = 40 sec, 8 = 50 sec,

9 = 60 sec, 10 = 150 sec

ALL 10 0~15 0 = Not functional, 1~10 = Setting seconds

11 = 12 sec, 12 = 14 sec, 13 = 16 sec,

14 = 18 sec, 15 = 20 sec

8: 190°C, 9: 195°C, 10: 200°C, 11: 205°C,

12: 210°C, 13: 215°C

4: 190°C, 5: 195°C, 6: 200°C,

7: Temp. control ON

September 1997 © TOSHIBA CORP. 1 - 17 2460 ADJUSTMENT

Code Name Mode Initial Allowance Remarks

value

413 Fuser temperature in the thick paper ALL 2 0~4 0: Not functional,

mode 1: 195°C, 2: 200°C, 3: 205°C, 4: 210°C

420 Developer life control ALL 7 0~7 0 bit: ATC correction

1 bit: Laser output correction

2 bit: Grid potential correction 421 Laser power correction value at 600 PPC 128 0~255

dpi

422 Laser power correction value at 600 DSI 128 0~255

dpi

423 Laser power correction value at 300/ GDI 128 0~255

600 dpi

424 Laser power correction value at 400 DSI 128 0~255

dpi

426 Laser power correction value at DSI 128 0~255

16 × 15.41 mm

428 Laser power correction value at DSI 128 0~255

15.41 × 16 mm 429 Laser power correction value PPC (Text) 128 0~255 430 Laser power correction value PPC 128 0~255

460 ADF switchback ALL 0 0~1 0: Not functional

480 Cassette selection priority ALL 0 0~6 0: A4/LT

483 Polygonal motor pre-running ALL 0 0~1 0: Pre-running, 1: Deactivate 484

Polygonal motor stops at the autoclear

501 Image mode Standard 0 0~2 0: Photo/Text mode

503 Normal mode image density Standard 0 0~1 0: Automatic

550 Image mode Extended 0 0~2 0: Photo/Text mode

600 ID code mode PPC 0 0~1 0: Not functional

601 Secondary scanning reproduction PPC EUR=0 0~1 0: 100 %

ratio adjustment UC=1 1: 101 %

603 Automatic duplexing mode PPC 0 0~3 0: Not functional 1:

(Photo/Text)

(Photo)

1: Functional

1: LCF 2: Copier upper cassette 3: Copier lower cassette 4: PFP upper cassette 5: PFP middle cassette 6: PFP lower cassette

ALL 0 0~1 0: Activate, 1: Deactivate

PPC 1: Photo mode

2: Text mode

PPC(Photo/Text)

PPC 1: Photo mode

1: Manual

2: Text mode

1: Functional

2: Dual-sided/Dual-sided 3: User selection

One-sided/Dual-sided

2460 ADJUSTMENT 1 - 18 September 1997 © TOSHIBA CORP.

Code Name Mode Initial Allowance Remarks

value 604 APS priority selection PPC 0 0~2 0: APS, 1: AMS, 2: No 605 SAPS mode PPC 0 0~1 0: All originals detection, 1: First original only 607 ADF priority mode PPC 0 0~1 0: RADF, 1: SADF 611 Book original selection PPC 0 0~1 0: Opening from the front,

1: Opening from the back

613 [USER] key, size selection PPC UC=12 0~14 0: A3, 1: A4, 2: A4R, 3: A5, 4: B4, 5: B5, 6: B5R,

EUR=13 7: LETTER, 8: LETTER-R, 9: LEDGER,

10: LEGAL, 11: 13: FOLIO, 14: Free size

617 ADF image shift PPC 0 0~1 0: Not shift

1: Shift

621 Bypass automatic start Standard 0 0~1 0: Not functional, 1: Functional

PPC

640 Date format Extended 0 0~2 0: 1996.11.28, 1: 28.11.1996, 2: 1 1.28.1996

PPC

641 Automatic sorting mode Extended 2 0~3 0: Not functional, 1: Staple

PPC 2: Sort, 3: Group

642 Sorter mode priority selection Extended 0 0~3 0: NON SORT, 1: STAPLE, 2: SORT, 3: GROUP

PPC

645 Reproduction ratio adjustment in Extended 10 0~10 0: 90%, 1: 91%, 2: 92%, 3: 93%, 4: 94%, 5:95%,

editing mode PPC 6: 96%, 7: 97%, 8: 98%, 9: 99%, 10: 100%

646 Arrangement of the page connection Extended 0 0~1 0: Cornering, 1: Centering

PPC

649 Magazine sort Extended 0 0~1 0: Opening from the front

PPC 1: Opening from the back

650 2 in 1/4 in 1 setting Extended 0 0~1 0: Horizontal mode

PPC 1: Vertical mode 690 HDD formatting ALL – 1~2 1: GDI format, 2: DSI format 691 HDD type indication ALL – 0~2 0: Not formatted, 1: GDI type formatted,

2: DSI type formatted

900 ROM version indication

(Standard ROM)

901 ROM version indication

(Extended ROM)

902 ROM version indication

(Engine ROM)

ALL – –

ALL – – Ver.XXX

UC : T220S1UCXX EUR : T220S1EUXX Mounted : T220S2XX Not mounted :

STATEMENT-R,

– – – –

12: COMPUTER,

(Note) Refer to the (Note 4) of the 1.2.4 for the meaning of the mode

September 1997 © TOSHIBA CORP. 1 - 19 2460 ADJUSTMENT

1.2.6 How to register/change ID codes (Access control mode)

When ID codes are registered, copies made will be classified according to each ID code. The copier will not start unless one of the ID codes registered is keyed in.

0 8

PWR

6 0 0

Procedure to register ID codes:

START

C1 HELP

PWR

Input an ID code

“— — — ”

displayed

Input next ID

Procedure to change ID codes:

ST ART

“— — — ”

displayed

START

PWR

Memorizing

“0525 001960”

displayed

INT

E/S

(To correct)

C/S

Up to 40 ID codes can be registered

PWR OFF

“0525 000000”

displayed

START

Warm-up

START

Warm-up

C/S

E/S

(To cancel)

(To clear)

HELP

(To skip)

2460 ADJUSTMENT 1 - 20 September 1997 © TOSHIBA CORP.

“— — — ”

displayed

001960”

“0525

Key in 000000

Next ID code displayed

Memorizing

START

E/S

START

1.3 Auto-Toner Sensor Adjustment

When the developer material is replaced, the auto-toner sensor needs to be adjusted, and the developer material counter (setting mode “08”, code “404”) needs to be cleared to zero.

Note: Make sure that the drum blade is pressed to the drum before the auto-toner adjustment.

<Procedure> (Use code “200” in the “05” mode.) (1) Install the process unit to the copier (main blade contacts with drum). (2) Press the keys “0” and “5” at the same time and turn on the power switch.

The following display appears indicating that the adjustment mode has been entered.

0 5

PWR

(3) Enter “200” using the digital keys and press the START key.

The following display will appear.

002

Note: A: Indicates the control data value of the auto-toner sensor. Use the zoom keys to change the nu-

B: The above display indicates an output voltage of 2.30V. C: Indicates the latest adjustment value.

The drum, developer unit, etc., are operating at this time.

(4) After approximately two minutes, the B displays on the message display will automatically begin to

change.

START

merical values.

100%

TEST MODE

230%

TEST MODE

128

230%

200

128

TEST MODE

128

(5) After a short time, the B displays on the message display will automatically stop changing and, at

the same time, the message will also change as shown below, indicating that the auto-toner adjustment has finished completely.

240%

ADJUST MODE

128

September 1997 © TOSHIBA CORP. 1 - 21 2460 ADJUSTMENT

200

WAIT

128

135

(6) In this status, check if the numerical value in B is within the range of 235 ~ 245 (auto-toner sensor

output range of 2.35 V ~ 2.45 V).

(7) If the numerical value in B is not within the range of 235 ~ 245, use the ZOOM keys to adjust the

numerical values manually to within the range of 235 ~ 245.

Note: The relationship between the ZOOM keys and the numerical values in A and B is as shown below.

Key used A value B value ZOOM up key Increase Increase ZOOM down key Decrease Decrease

(8) Press the INTERRUPT key.

The drum, developer unit, etc., will stop operating and the following display will appear.

100%

INT

(9) Turn off the power switch.

Install the toner cartridge.

TEST MODE

100%

READY

2460 ADJUSTMENT 1 - 22 September 1997 © TOSHIBA CORP.

1.4 Image Density

If the user wants to change the image density, adjust the image density in adjustment mode “05.”

Original mode

Photo/Text

500 501 502 505 506 507 Light side

Code

Follow the procedure below to adjust the image density to suit the user’s preferences while comparing the image obtained in the test copy and the currently entered allowable values.

508 509 510 Dark side 511 512 513

Digital keys : Enter code.

Photo Text

Standard PPC

0 5

PWR

START

Adjustment item Remarks

Manual exposure center value

Manual exposure step value

Automatic exposure

100%

TEST MODE

100%

TEST MODE

XXX

The larger the value, the darker the image The larger the value, the lighter the light range The larger the value, the darker the dark range The larger the value, the darker the image

Code becomes “xxx” according to the entered code.

Code No.

Enter adjustment

Digital keys

C/S

INTERRUPT

ENERGY

SA VER

0 9

September 1997 © TOSHIBA CORP. 1 - 23 2460 ADJUSTMENT

value.

used to correct value

V alues “zzz” are stored in BC-RAM in place of “YYY”.

: Test copy

Return to 1 to repeat adjustment.

:Adjustment mode

canceled.

Notes:1) Only one copy of single-sided originals can be made.

2) Duplex copying and memory copying cannot be carried out.

Current entered adjustment value

100%

TEST MODE

100%

WAIT WARMING UP

100%

COPYING

Make test copies in these modes after canceling the adjustment mode.

ZZZYYY

Entered adjustment value (If no enter, YYY)

1.5 Print Image Adjustment

As for the print image adjustment, the adjustment items are listed below. The adjustment should be performed in the following order.

Adjustment Item Code (1) Aligning value (450) ~ (458) (2) Printer unit adjustment

a) Primary scanning reproduction ratio

Polygonal motor 600 dpi/GDI (401)

b) Primary scanning position

Laser starting position 600 dpi/PPC (410)

c) Secondary scanning reproduction ratio

Main motor speed fine adjustment (421)

d) Secondary scanning position

Registration (441) (440) (442) ~ (445)

(3) Scanner unit adjustment

a) Primary scanning reproduction ratio

Polygonal motor 600 dpi/PPC (400)

b) Primary scanning position

CCD primary scanning deviation (306)

c) Secondary scanning reproduction ratio

Scanner secondary scanning reproduction ratio (304)

d) Secondary scanning position

Scanner secondary scanning deviation (305) e) Cutting of scanner image leading edge (313) f) Top margin (430) g) Left margin (431) h) Right margin (432) i) Bottom margin (433)

2460 ADJUSTMENT 1 - 24 September 1997 © TOSHIBA CORP.

[How to Enter Adjustment Values]

Follow the procedure below to adjust each of the adjustment values so that the measurement values obtained from the test copy satisfy specification values. After starting up in adjustment mode “05”, only test copies (in the regular copy mode) of single-sided originals can be made with the ENERGY SA VER key .

Code becomes “xxx” according to the entered code.

0 5

PWR

Digital keys

: Enter code.

100%

TEST MODE

Code No.

ST ART

Digital keys

C/S

INTERRUPT

ENERGY

SAVER

0 9

: Enter adjustment

value.

used to correct value

Values “zzz” are stored to BC-RAM in place of “YYY”.

: test print

If the test print does not satisfy the specifications, return to 1, and repeat the adjustment.

: Adjustment mode canceled.

100%

TEST MODE

Currently entered adjustment value

100%

TEST MODE

100%

WAIT WARMING UP

100%

COPYING

XXX

ZZZYYY

Entered adjustment value (If no enter, YYY)

September 1997 © TOSHIBA CORP. 1 - 25 2460 ADJUSTMENT

1.5.1 Adjustment of paper aligning value

If necessary, you can extend the feed roller life slightly by increasing the paper aligning value.

<Procedure> (Use code 450~458 in the “05” mode.)

Copier cassette Upper Lower (Long) (Long)

(450) (452)

ADU

(Long)

(454)

AAA

PFP

(456)

LCF

(457)

Bypass

(458)

If necessary

(1)

0 5

PWR

E/S

(Test copy)

4 5

(Cassette)

Copier cassette

Upper Lower

(Short) (Short)

(451) (453)

0 9

START

(Current value)

(2) Check the copy for image void and if there is

any, reduce the new value to “31” → “30” → “29”… until no void occurs. Check for paper misfeeding. When the aligning value is increased, noise caused by the paper scraping against the mylar may possibly be increased.

(3) For the LCF, ADU and pedestal, the same pro-

ADU

(Short)

(455)

(New value)

Void

1 5

INT

(Memory set)

Cassette

cedure can be used.

Notes: 1. When frequent paper jams occur near the aligning roller caused by using special thin paper other than

that specified, the aligning value can be changed (reduced) as a measure. However, when the aligning value is reduced excessively, this may possibly cause the registration to be shifted. Therefore, make sure that no registration shifting occurs while adjusting the value.

2. Long size adjustment is used as the base when there are both long and short adjustments.

2460 ADJUSTMENT 1 - 26 September 1997 © TOSHIBA CORP.

50 ~100 mm

1.5.2 Printer unit adjustment

a) Polygonal motor 600 dpi/GDI (Primary scanning reproduction ratio of the printer unit)

(1) Make a test print as in the following procedure.

0 5

PWR

FAX

(2) Measure the distance “A” which is the distance between the 5th line and 15th line from the

bottom end of the test print paper against the direction of the paper movement.

Print movement direction

(3) In order to set the distance “A” to 100 mm, adjust as follows.

4 0 1 1

START

Set the value

INT

FAX

Notes 1. An increase in the value lengthen the distance “A”.

2. In order to make a test print, make sure the message indicates [ 100 % A ]

after the INT key is pressed.

3. Adjustment value is effective within the range of 114 ~ 142. The default adjustment value is 128.

September 1997 © TOSHIBA CORP. 1 - 27 2460 ADJUSTMENT

b) Laser starting position 600 dpi/PPC

(1) Make a test print as in the following procedure.

0 5

PWR

FAX

(2) Measure the distance “B” which is the distance from the bottom end of the test print paper to

the 6th line.

Print movement direction

(3) In order to set the distance “B” to 52 mm, adjust as follows.

4 1 0 1

START

Set the value

INT

FAX

Notes 1. An increase in the value makes the distance B longer (0.0423 mm/step).

2. In order to make a test print, make sure the message indicates [ 100 % A ]

after the INT key is pressed.

3. Adjustment value is able to be input within the range of 0 ~ 255. The default adjustment value is 80.

2460 ADJUSTMENT 1 - 28 September 1997 © TOSHIBA CORP.

c) Main motor speed fine adjustment (Secondary scanning reproduction ratio of the printer

unit)

(1) Make a test print as in the following procedure.

0 5

PWR

FAX

(2) Measure the distance “C” which is the distance between the 5th line and 15th line from the

leading edge of the test print paper.

Print movement direction

(3) In order to set the distance “C” to 100 mm, adjust as follows.

4 2 1 1

START

Set the value

INT

Notes 1. An increase in the value lengthen the distance “C” (0.0315 %/step).

2. In order to make a test print, make sure the message indicates [ 100 % A ]

after the INT key is pressed.

3. Adjustment value is able to be input within the range of 1 ~ 255. The default adjustment value is 140.

FAX

September 1997 © TOSHIBA CORP. 1 - 29 2460 ADJUSTMENT

d) Registration

< Adjustment order >

Copier cassette

Lower Upper

(441) (440)

Bypass

(442)

LCF

AAA

(443)

PFP

(444)

ADU

(445)

< Adjustment procedure > (1) Make a test print as in the following procedure.

0 5

PWR

FAX

(2) Measure the distance “D” which is the distance to the 6th line from the leading edge of the

test print paper.

Print movement direction

(3) In order to set the distance “D” to 52 mm, adjust as follows.

Code

START

Set the value

INT

FAX

Notes 1. An increase in the value corresponds to a decrease in the distance “D” (0.5 mm/step).

2. In order to make a test print, make sure the message indicates [ 100 % A ]

after the INT key is pressed.

3. Adjustment value is able to be input within the range of 0 ~ 15. Default adjustment

value is 8. In case of the lower cassette feeding (Code “441”), adjustment value is within the range of 0~40 (Default adjustment value is 13).

4. Since the lower cassette adjustment value becomes a standard for all adjustments,

this adjustment must always be performed in the order stated above.

2460 ADJUSTMENT 1 - 30 September 1997 © TOSHIBA CORP.

1.5.3 Scanner unit adjustment

a) Polygonal motor 600 dpi/PPC

(1) Place the scale on the original glass (vertical to the direction of the copy paper movement)

and make an A4 100% copy.

(2) Measure and compare the copy and the scale.

Copy movement direction

Copied Scale Actual Scale

(3) In order to correct the copied image to the scale, adjust as follows.

0 5

PWR

4 0 0

START

Set the value

INT

E/S

(Test copy)

Notes 1. An increase in the value corresponds to an increase in the division of the scale

(0.225 % / step).

2. In order to make a test copy, make sure the message indicates [100 % A] after the INT key is pressed.

3. Adjustment value is effective within the range of 114 ~ 142. The default adjustment value is 128.

September 1997 © TOSHIBA CORP. 1 - 31 2460 ADJUSTMENT

b) CCD primary scanning deviation

(1) Place the scale (its end to the rear side original scale and its side to the left side original

scale) on the original glass and make an A4 100% copy.

Copy movement direction

100

(2) In order to correct the distance “E”, which should be 100 mm from the position copied to the

bottom of the paper, adjust as follows.

0 5

PWR

3 0 6

START

Set the value

INT

E/S

(Test copy)

Notes 1. An increase in the value makes the image shift to the paper edge (0.0423 mm/

step).

2. In order to make a test copy, make sure the message indicates [100 % A] after the INT key is pressed.

3. Adjustment value is able to be input within the range of 5 ~ 251. The default adjustment value is 85.

2460 ADJUSTMENT 1 - 32 September 1997 © TOSHIBA CORP.

c) Secondary scanning reproduction ratio

(1) Confirm that the value of the cutting volume of the scanner leading image edge (code 313) is

128 (default value).

0 5

PWR

3 1 3

START

In case the value is “128”.

In case that the value is not “128”, input “128” with the digital keys

INT

(2) Place the scale (horizontal to the copy movement direction) and make an A3 100% copy.

Copy movement direction

Copied Scale

Actual Scale

(3) Compare the copy and the scale.

PWR OFF

(4) In order to adjust the divisions of the scale, do as follows.

0 5

PWR

3 0 4

START

Set the value

INT

E/S

(Test copy)

Notes 1. An increase in the value corresponds to an increase in the division of scale (0.1522

%/step).

2. In order to make a test copy, make sure the message indicates [ 100 % A ] after the INT key is pressed.

3. Adjustment value is able to be input within the range of 0 ~ 255. The default adjustment value is 128.

September 1997 © TOSHIBA CORP. 1 - 33 2460 ADJUSTMENT

d) Scanner secondary scanning deviation

(1) Make the adjustment values for the original leading edge void to “0”, and the cutting volume of

scanner leading image edge to “128”.

0 5

PWR

START

3 1 5 3 1 3

Input the “128” with the digital keys

START

INT

Input the “0” with the digital keys

INT

(2) Place the scale (its end to the left side original scale) on the original glass and make an

A3 400% copy.

Copy movement direction

(3) In order to correct the distance “F”, which should be 42 ±0.5 mm from the leading edge of the

paper, adjust as follows.

0 5

PWR

Notes 1. An increase in the value makes the image move to the trailing edge (0.1213 mm/

3 0 5

START

Set the value

INT

E/S

(Test copy)

step).

2. In order to make a test copy, make sure the message indicates [100 % A] after the INT key is pressed.

3. Adjustment value is able to be input within the range of “85 ~ 171”. The default adjustment value is 135.

2460 ADJUSTMENT 1 - 34 September 1997 © TOSHIBA CORP.

e) The cutting volume of the scanner leading image edge.

(1) Place the scale (its end to the left side original scale) on the original glass and make an A4-

100% copy.

Copy movement direction

Copied scale

510

(2) In order to delete the copy of scale mark just for 2 mm from the leading edge of the paper,

adjust as follows.

0 5

PWR

3 1 3

START E/S

Set the value

INT

(Test copy)

Notes 1. An increase in the value makes the image move to the leading edge of the paper

(0.1213 mm/step).

2. In order to make a test copy, make sure the message indicates [ 100 % A ] after the INT key is pressed.

3. Adjustment value is able to be input within the range of “128 ~ 255”. The default adjustment value is 128.

September 1997 © TOSHIBA CORP. 1 - 35 2460 ADJUSTMENT

f) Left margin

Not functional

g) Right margin

(1) While the original cover remains open, make an A4-100% copy.

Copy movement direction

2mm

(2) In order that the blank space at rear side of the copy is just 2 mm, adjust as in the following

procedure.

0 5

PWR

4 3 2

START INT

Set the value E/S

(Test copy)

Notes 1. An increase in the value corresponds to an increase in the blank image (0.0423

mm/step).

2. In order to make a test copy, make sure the message indicates [ 100 % A ] after the INT key is pressed.

3. Adjustment value is able to be input within the range of –94 ~ 255. The default adjustment value is 0.

4. In order to input a minus (–) value, use the # key. (ex. if the value is “–15”: key in # 1 5 )

2460 ADJUSTMENT 1 - 36 September 1997 © TOSHIBA CORP.

h) Top margin

Not functional

i) Bottom margin

(1) While the original cover remains open, make an A4 100% copy.

Copy movement direction

2mm

(2) In order that the blank space at the trailing edge of the copy is just 2 mm, adjust as in the

following procedure.

0 5

PWR

4 3 3

START

Set the value

INT

E/S

(Test copy)

Notes 1. An increase in the value corresponds to an increase in the blank image (0.0423

mm/step).

2. In order to make a test copy, make sure the message indicates [100 % A] after the INT key is pressed.

3. Adjustment value is able to be input within the range of –94 ~ 255. The default adjustment value is 0.

4. In order to input a minus (–) value, use the # key. (ex. if the value is “–15”: key in # 1 5 )

September 1997 © TOSHIBA CORP. 1 - 37 2460 ADJUSTMENT

1.6 Automatic Gamma Adjustment

(1) At the unpacking

When the tone reproduction deviation is too large, it can be corrected by the automatic gamma adjustment. This adjustment shall be done upon user’s request when the tone reproduction is too high or too low.

(2) When any of the following parts is replaced, this adjustment is required.

• Halogen lamp • Original glass with shading board

• Lens unit • Laser optical system unit

(3) When any of the following parts is replaced or adjusted, check the copy image and determine the

necessity of this adjustment.

• Optical system position (CRG1, CRG2 position) • Mirror 1, 2, 3

• Reflector • Drum • Developer

• Main charger • Development bias • Transfer charger

• Separation • Pre-cleaning discharge charger

Note) This adjustment must be done only after the image adjustment described in 1.5.

Code Adjustment item Procedure

580 Automatic gamma

adjustment

[Procedure] (1) Turn on the power switch with “05”. (2) Select A3 or LD paper for the output paper size. (3) Press the “2” key and then “FAX” key.

(One copy of the 33-gradation pattern is outputted.)

(4) Confirm that there is no blank or line on the gradation pattern outputted in

the above step (3) and the density changes gradually. If there is any problem in the gradation pattern, repeat the step (3) to output a gradation pattern again.

(5) Face the dense side of the output gradation pattern to the original scale at

the exit side and put it on the original glass with the printed face down.

(6) Input the code “580” through the control panel and press the START key.

(The scanner automatically reads the original and the operation for the automatic gamma adjustment will be done. About 10 seconds)

(7) When the operation completes normally, the machine returns to the stand-

by status. If the operation terminates abnormally, “TEST MODE ERROR” will be displayed. (See the indication on the next page.) For the abnormal termination, press the C/S key to release the error indication. When released, the display on the control panel returns to the stand-by status. Check the position, direction and skew of the gradation pattern on the original glass, and repeat the steps from (5).

2460 ADJUSTMENT 1 - 38 September 1997 © TOSHIBA CORP.

0 5

PWR

FAX

Digital keys

START

C/S

0 9

: Select the casette

: Prints out the 33

gradation pattern Place the original

: Input the code

: Starts the adjustment

: Ends the adjustment : Clear the adjustment error Return to 1 to repeat adjustment : Exit the adjustment mode

100%

TEST MODE

100%

WAIT WARMING UP

100%

COPYING

100%

TEST MODE WAIT

Normal: (Warming up)

100%

TEST MODE

Abnormal: (Clear using C/S key)

580

100%

TEST MODE ERROR

580

September 1997 © TOSHIBA CORP. 1 - 39 2460 ADJUSTMENT

1.7 Sharpness (HPF) Adjustment

If the user wants to change the image sharpness to softer or harder, adjust the HPF intensity in adjustment mode “05”.

Image mode

Photo/Text

620 621 622 HPF intensity

Code

015

PWR

Digital keys

START

Photo Text

: Enter code.

Adjustment item Remarks

1st digit : 0 (fixed) 2nd digit: 0: Use default value

100%

TEST MODE

100%

TEST MODE

XXX

1~9: Change the intensity

(If the value is increased, the sharpness is increased)

Code becomes “xxx” according to

the entered code.

Code No.

Digital keys

C/S

INTERRUPT

ENERGY

SA VER

0 9

2460 ADJUSTMENT 1 - 40 September 1997 © TOSHIBA CORP.

Enter adjustment value.

used to correct value

V alues “zzz” are stored in BC-RAM in place of “YYY”.

: Test copy

Notes:1) Only one copy of single-sided originals can be made.

Return to 1 to repeat adjustment.

:Adjustment mode canceled.

100%

TEST MODE

100%

COPYING

2) Duplex copying and memory copying cannot be carried out. Make test copies in these modes after canceling the adjustment mode.

Current entered adjustment value

ZZZYYY

Entered adjustment value (If no enter, YYY)

1.8 Gamma Slope Correction

If the user wants to change the gamma curve, adjust the gamma slope correction in adjustment mode “05.”

Code

Image mode

Photo/Text

590 591 592

593 594 595

Photo Text

Standard PPC

Extended PPC

Adjustment item Remarks

Gamma slope correction

If the value is increased, the image is darkened. (Center value is 5) If the value is increased, the image is darkened. (Center value is 5)

Input procedure of the adjustment value is same as the 1.4 image density adjustment.

September 1997 © TOSHIBA CORP. 1 - 41 2460 ADJUSTMENT

1.9 High-V oltage Adjustment

1.9.1 Adjustment

(1) Measurement

Developer Bias Main Charger Transfer Charger Separation Charger

Developer unit

Cleaner unit Dev.unit connector of

the machine

(+) terminal

(–) terminal Function switch

Digital Tester

Full-scale Remarks

How to turn the power ON

Pull out the connector. Remove the drum. Install the Developer unit.

Not connect Connect to the bias

measuring hole (B) of the Developer unit. Connect to (A)

Use a digital tester having an input resistance of 10 MΩ (RMS value) or more. Use the door switch jig.

Developer Bias Main Charger Transfer Separation

Remove from the copier. (Not use) Mount on the machine with a current measuring jig. NOTES 1: Connect the green code of the current measuring jig to earth on the copier.

Connect the jig detection connector to the Dev.unit connector of the copier. Connect to the main

charger case. (between the case and the terminal) Connect to the white cable of the current measuring Jig (frame grounding).

1,000 V

Connect to red cable of Current measuring jig.

(A)

(Frame grounding)

(B)

Machine frame (frame grounding)

Green

Red

Main charger case

Current measuring jig

Jig detection connector

Brown

Dev. unit connector of the copier

d terminal

White

d terminal e terminal

e terminal

Pre-Cleaning Discharge

← Developer unit

← Cleaner unit ← Dev. unit connector of

the machine

Refer to 1.9.3 for detailed mounting method.

Shaft fastening jig

← (+) terminal

← (–) terminal

AC Function switch

2V Full-scale

← Remarks

Use door switching jig.

Pre-cleaning Discharge

Machine frame (frame grounding)

Digital Tester

How to turn the power ON

Bracket

Current measuring jig

Cleaner

Dev. unit connector of the copier

Shaft jig

Jig detection connector

Current measuring jig

Brown

Jig detection connector

d terminal

White

Red

e terminal

(2) Operation

NOTES

1. When the drum has been replaced with a new one, “0” (zero) must be input to clear the drum life counter (“08” mode, code 401). Also when the developer material is replaced with a new one, clear the developer material counter to zero (“08” mode, code “404”).

2. When adjusting the high-voltage outputs, a current measuring jig and a shaft jig are required (except the developer bias measurement).

3. When the connector of the shaft jig and the connector of the developer unit on the machine are not connected, high-voltage adjustment codes are not accepted, except the developer bias adjustment. When the developer bias is to be measured, nothing should be connected to the connector of the developer unit on the machine.

4. The measurement value of the developer bias varies according to the input resistance of the digital tester. For shipping, adjustment is made using a 100 MΩ input resistance tester.

Connect the digital testers as instructed in (1) and follow the procedure below to adjust the main charger, developer bias, transfer, separation, and pre-cleaning discharger outputs.

0 5

PWR

Digital keys : Enter code.

ST ART

ZOOM

INT

: Adjust value “YYY” so that the measurement values satisfy the values in the following table.

: Value “YYY” after adjustment is stored to BC-RAM.

100%

TEST MODE

100%

XXX

Code No.

TEST MODE

YYY

Current entried adjustment value

Main Developer

charger bias High Center Low Code 210 205 220 221 222 Adjustment Input 100MΩ –642 ±5V –450 ±5V 409 ±67mV 298 ±64mV value resistance 10MΩ –642 ±5V –420 ±5V 409 ±67mV 298 ±64mV

Separation Pre-cleaning

High Center Low discharger

Code 230 231 232 240 Adjustment RMS value 1122 ±117mV Not used Value Mean value 1051 ±101mV Not used

347 +99/–113mV

317 +89/–103mV

Transfer

150 +60/–37mV 150 +60/–37mV

919 ±189mV 834 ±186mV

100%

TEST MODE

To switch to other adjustment modes, return to 1.

0 9

Note: The “adjustment value” indicates the output voltage of the D/A converter (IC75) on the logic board. The rela-

tionship between the output voltage and adjustment value is as follows:

output voltage = ( adjustment value + 1) ÷ 256 × 5 V

: Adjustment mode canceled.

1.9.2 Precautions

(1) Developer bias

Caution during Adjustment If fogging appears over the entire surface even though the grid voltage and toner density are appropriate, adjust the developer bias on the control panel. The following defects may occur if the developer

bias is lowered too much:

• Image contrast becomes low.

• Image is patchy or blurred.

• Developer carrier adheres to the photosensitive body, making it easier for scratches to occur or the

surface of photosensitive body by the cleaner blade.

(2) Transfer

Items to Check before Adjustment Pockmarks or defective transfer also occur in defects besides transfer output adjustment defects. If this happens, check the following items. If an error is not found after carrying out the following checks,

adjust the output.

• Is the charger wire out of position or dirty? Is the transfer guide deformed?

• Is the developer unit connected? Are the developer magnetic brushes contacting with the drum?

Is the developer unit rotating during copying? Is the toner density low?

• Is the copy paper bending as it is being fed in? Is the copy paper abnormally moist?

• Is the aligning roller rotating normally?

• Is the transfer guide bias outputing?

• Is the separation output deviating from the set value?

• Is the developer bias an appropriate value?

• Is the transfer/separation charger case earthed? Is the photosensitive drum (shaft) earthed? Is the

transfer/separation transformer earthed?

• Is the transfer charge limit plate (transparent film) damaged or deformed?

Caution during Adjustment 1When pockmarks occur:

• If pockmarks are occurring in halftone areas, lower the transfer output value. However , note that if the transfer output value is lowered too far, the transfer performance also will be reduced.

2When defective transfer occurs:

Increase the transfer output value under the following conditions. However, note that if the transfer output value is raised too far, pockmarks will occur.

• If defective transfer occurs even though the charger wire is not dirty, and

• If thick paper is frequency used.

• The adjustment code varies according to where pockmarks occur . Select the required adjustment code while referring to the following diagram.

Approx. 14 mm Approx. 10 mm

Adjustment code

Copy leading edge

“220” “221” “222”

Copy trailing edge

(3) Separation

Items to Check before Adjustment Defective separation from the drum also occurs in other than separation output adjustment defects. If this happens, check the following items. If an error is not found after carrying out the following checks,

adjust the output.

• Is the charger wire out of position or dirty?

• Is the developer unit connected? Are the developer magnetic brushes contacting with the drum?

Is the developer unit rotating during copying? Is the toner density low?

• Is the copy paper bending as it is being fed in? Is the copy paper abnormally moist?

• Is the alignment roller rotating normally?

• Is the main charger outputting?

• Is the transfer output deviating from the set value?

• Is the transfer/separation charger case earthed? Is the transfer/separation transformer earthed?

Caution during Adjustment 1When defective separation occurs:

Increase the separation output value under the following conditions. However, note that if the separation output value is raised too far, pockmarks will occur, and separation performance will be reduced. (Adjustment code = 230)

• If defective separation occurs even though the charger wire is not dirty, and

• If thin paper is frequency used.

2When defective transfer occurs:

• Lower the separation output value when defective transfer occurs. However, note that if the separation output value is lowered too far, the separation performance also will be reduced.

• The adjustment code varies according to where the defective transfer occurrs. Select the required adjustment code while referring to the following diagram.

Approx. 10 mm

Adjustment code

Copy leading edge

"230" "232"

“230” “232”

Copy trailing edge

1.9.3 Installation of the Current Measuring Jig

(1) Attach the bracket and the round terminal of

the brown cord from the jig detection connector in common (1 screw) to the shaft jig . Pass the jig through the cleaner unit.

Notes: 1. When passing the shaft from the outside of

the cleaner, insert the thinner part of the shaft at first.

2. The drum blade should be released by rotating the cam before the first.

(2) Pass the current measuring jig through the

shaft jig and align the shaft fastening bush to the rear hole of the cleaner unit. Fix the bracket to the cleaner unit (1 screw).

Notes: 1. Check the shaft fastening bush alignment

again to fix the bracket.

2. Use care to prevent damage to the edge of the separation claws.

Bracket

Brown cord

Current measuring jig

Bracket

Cleaner unit

Cam

Shaft jig

Cleaner

Jig detection connector

Shaft fastening bush

Shaft jig

Jig detection connector

(3) Fix the shaft fastening bush to the shaft jig

from rear side of the cleaner unit (1 screw).

Current measuring jig

Cleaner unit

Shaft fastening bush

Shaft jig

Jig detection connector

(4) Install the cleaner unit to the copier (2 screws), and connect the jig detection connector to the

developer unit connector of the copier.

Fix the green cable of the current measuring jig to the machine frame.

Notes 1. Move the current measuring jig to the center of the cleaner unit.

2. Use care to prevent damage to the edge of the separation claws.

3. High-voltage adjustment is rejected if the jig detection connector is not connected (except the

developer bias adjustment).

1.10 Installation of Carriage Drive Wire

When the carriage drive wire is replaced, attach the new wire as shown:

Carriage drive wire

Carriage 1

Carriage 2

Tension spring

Pulley

Scanning motor

Wire winding pulley

Belt

Rear side view

1.10.1 Wire tension adjustment

(1) For this model, it is unnecessary to adjust the carriage drive wire tension.

Exit side frame

1.10.2

Adjustment of carriage 1 and carriage 2

Carriage 1

(1) Remove the indicator unit. (2) Loosen the 3 screws fixing carriage-1 (2

screws, front, rear, 1 screw each) and -2 (1 screw in front) to the wire.

Exit side frame

(3) While pressing carriage-2 against the exit side

Pulley

Exit side frame

frame (both A & B), tighten the carriage-2 fix-

ing screws (front side).

(4) Also while pressing carriages 1 and 2 against

the exit side frame (C & D), tighten the carriage-1 fixing screws.

Carriage 2

Exit side frame

1.10.3

Carriage drive wire assembling

• Winding the wire to the wire winding pulley (1) Fit the φ3 spherical terminal (on the central

part of the wire) into the hole of the wire winding pulley.

Set the wire so that the crimping portion of

the wire and hook is faced up.

(2) Wind the wire to the each front and rear side

pulleys.

Winding turns are:

• 6 turns on the opposite to the boss side (outside) of the pulley .

• 1 turn on the boss side (inside). After winding, secure the wire with the wire holder jig.

Spherical terminal

Hook

1 turn

6 turns

Pulley (Front)

Boss

Spherical terminal

Wire winding pulley

Pulley (Rear)

6 turns

1 turn

Spherical terminal

Hook

Boss

(Rear)

Spherical terminals

(Front)

Wires

Wire winding pulley

Hooks

Wire holder jig

Notes 1. Wind the wire round the pulley taking the fol-

lowing precautions

• Never twist the wire when winding.

• Wind the wire tightly to make it come into close contact with the pulley.

• Wind the wire taking care not to leave any gap between the wraps.

2. When the wire holder jig is installed, do not slide or loosen the wound wire.

3. The wire holder jigs are the same for the front and rear sides. Be careful when installing the jig. The jigs will not installed if its installation direction is wrong, it is floating on the pulley.

In full contact

Example) Front side

Spherical terminal

Pulley

Front side

Wire holder jig

←

Rear side

Projection

→

Projection

Wire holder jig

1.11 Image Inclination•Image Distortion

1.11.1 Image inclination

Direction of the copy paper movement

Image

Paper

If inclination of the image occurs even though the edge of the original is properly aligned with the scale, adjust by moving the original scale.

In case of A

• Move the original scale in the direction indicated

Direction of the copy paper movement

In case of B

• Move the original scale in the direction indicated by

1.11.2 Image distortion

Step 1

Direction of the copy paper movement

Step 2

<Procedure> Removing the original glass. (Adjustment order:

Image

Direction of the copy paper movement

step 1 → step 2)

Step 1

In case of A: Tighten the mirror-2 adjustment screw (CW). → Go to C

In case of B: Loosen the mirror-2 adjustment screw (CCW).

Mirror-2

→ Go to D

Step 2

In case of C: Tighten the mirror-1 adjustment screw (CW). → Normal image

In case of D: Loosen the mirror-1 adjustment screw (CCW). → Normal image

Mirror-1

1.12 Lens Unit

It is impossible to adjust the lens unit. Replace the entire unit with a new one.

Notes 1. Do not touch the screws H (paint lock: 7pcs.) when replacing the lens unit.

Lens

Front side

2. Take sufficient care when handling the unit not to hold the adjustment portion.

Rear side

1.13 Adjustment of Gap between Drum and Sleeve

This model uses a hit-drum method using the guide roller, and no adjustment is necessary.

Guide roller

1.14 Adjustment of Developer Polarity Position

(1) Remove the developer unit from the machine. (2) Adjust at the rear adjustment plate. Loosen

the fixing screw of the adjustment plate and move the plate according to the stamped mark on the plate as a guide line to make adjustment. As this is already adjusted with a special jig at the time of shipping from the factory, do not loosen the screw unnecessarily. When loosening the screw for disassembly, etc., remember the position of the adjustment plate and reinstall it where it was. (During the replacement of the magnetic roller, adjust the developer the developer polarity position.)

Adjustment plate

Stamped mark

Height of developer polarity position: H=34.7 mm

1.15 Doctor Sleeve Gap Adjustment

Tool required: Doctor sleeve jig

Leveler adjustment screws

Method (1) Remove the developer unit from machine, take

out the upper cover (2 screws), and discharge

the developer material. (2) Place the developer unit on a flat surface. (3) Turn the leveler adjustment screws and ad-

just it using the step “0.45” into the gap be-

tween the sleeve and leveler.

(4) Check that step “0.40” can move smoothly in

the front and rear direction in the gap between the sleeve and leveler, while step “0.50” cannot be inserted.

(5) Reassemble the upper cover of developer

unit.

Notes: 1. Align the position of sleeve marking with that

of the leveler, when checking or adjusting the gap between the sleeve and the leveler.

2. When assembling the upper cover , fasten the hooks with a screw after fully inserting them.

3. After reassembling the upper cover, pay attention to avoid overlapping of the side seal (front and rear) and the rubber seal.

Step “0.45”

Sleeve

Leveler

Step “0.40”

1.16 ADU Adjustment

1.16.1 Adjusting the stack guide unit in position

In duplex copying using the ADU, the difference in side deviation on both sides of the copy should be within ±3 mm. If not, make adjustment as follows: After stacking sheets of paper on the stack guide, check that the gap between the side stopper and the edge of the sheet is 1.5 ± 1 mm. To adjust the gap, loosen the side switch bracket fixing screw. Move the bracket according to the scale. After moving the bracket, initialize the ADU. Check the gap between the side guide and the paper.

1.5 ± 1 mm

Side

Side guide

guide

Stacked sheets

ADU motor bracket

Side switch bracket

1.16.2 Adjusting ADU side deviation

To adjust the side deviation of the image of duplexed copies (i.e. the image on the second side): (1) When the 5 fixing screws at the front cover of the ADU are loosened, the ADU can be adjusted in the

front/rear direction by a maximum of 3 mm.

(2) If the center of the image is shifted toward the rear side, move the ADU front cover to the rear side

the same distance (as the image is shifted) and tighten the screw.

(3) If the center of the image is shifted toward the front side, move the ADU front cover to the front side

the same distance (as the image is shifted) and tighten the screw.

Front left side Front right side

Right feed side

1.17 Adjusting Cassette Side Deviation

The procedure for adjusting cassette side deviation for the copier and the PFP is the same as in 1.16.2.

2. PERIODICAL MAINTENANCE

2.1 Inspection every 80,000 Copies

(1) Preparation

1 Ask the key operator about the present machine conditions and note them down. 2 Before starting the maintenance work, make and retain a few sample copies for later compari-

son.

3 Turn off the power switch and disconnect the power cord plug.

(2) The periodic inspection should be conducted in accordance with the Periodic Inspection Check List

shown below. Perform the inspection by referring to the figures, as well as to the explanations in the Service Manual when necessary.

(3) After the inspection has been completed, plug in the machine and turn the power switch on, and

confirm the general operation of the machine by making a few copies and comparing them to those made previously.

2.2 Inspection and Overhaul every 240,000 Copies

(1) Replace all the consumables. (2) Check to see if there is any damage to the parts of driving section (gear, pulley, timing belt, etc.).

Replace parts on principle if damaged.

(3) Check to see if there is any damage or peeling of adhered parts (tape, Mylar sheet, etc.). Replace

any affected parts.

(4) Check to see if all the switches and sensors operate properly. Replace them if they are not operat-

ing properly.

(5) Clean the inside of the machine thoroughly.

2.3 Periodic Inspection Check List

Symbols used in the Periodic Inspection Check List

Cleaning Lubrication Replacement Date A: Cleaning with alcohol L: Launa 40 80: Every 80,000 copies Customer’s P: Cleaning with heat Application 160: Every 160,000 copies name

roller cleaner (RC60) S: Silicone Oil Same thereafter Machine

Cleaning with soft pad, cloth, or cleaner deformation or other Inspector (vacuum cleaner) damage

W: White grease (Molycoat)

>: Replace in event of No.

Remarks

PERIODIC INSPECTION CHECK LIST

Area

1. Overall unit Z

2. Main blade 80 *1

3. Toner bag 20 Conducted

Cleaner

4. Recovery blade Z > *2

6. Separation claw 80 > Z *3

7. Drum shaft Z or A

Drum 8. Drum 80 *4

9. Ozone filter 80 Original 10. Glass Z *5 holder 11. Original cover Z or A

12. Mirror 1 Z

13. Mirror 2 Z

14. Mirror 3 Z

15. Reflector Z Optical 16. Lens Z system 17. Exposure lamp > Z

18. Copy area indicator Z

19. APS ZZ

20. Slider sheet (front, rear) Z or A >

21. Air filter Z > *6

22. Case Z *7 Charger

Developer unit 28. Front shield Z > *10

Laser op- 30. Slit glass Z tical unit

Paper feed system

23. Charger wire 80 > Z *7

24. Terminal contact Z

25. Grid Z 160 *8

26. Overall unit Z

27. Developer material 80 *9

29. Guide roller Z or A >

31. Pick-up roller A 80 >

32. Feed roller A 80 >

33. Separation roller A 80 >

34.

35. Aligning roller A >

36. Paper guide Z >

37. Brush Z >

38. Transport belt Z >

39. Separation pad A 80>

Item to check

Paper feed system drive gears (tooth faces)

Clean at Lubricate at Replace Check

80,000 copies 80,000 copies

x 1,000 while on

Remarks

by key operator

Area

40. Heat roller (H/R) Z or P 160 *11

41. Fuser entrance guide Z or P

42. Pressure roller (P/R) Z or P 160 *12

43. Cleaning felt roller 80 *13 Fuser 44. Thermistor Z or P > unit 45. Scraper (for H/R) 80 *14

46. Fuser exit guide Z or P

47. Exit roller A

48. Scraper (for P/R) Z or P >

49. Heat roller cleaning blade A > *15

50. H/R drive gear S

51. GCB bushing L Drive system

52. Main motor drive unit gears W *16

53. Toner cartridge drive W

Item to check

(tooth faces and idler shafts)

(including main motor section, paper feed section and fuser unit)

gear shaft

Clean at Lubricate at Replace Check

80,000 copies 80,000 copies

X 1,000 while on

Remarks

ADU

Area

71. Pick-up roller 80

72. Feed roller (main) 80

73. Feed roller (sub) A

74. Separation roller 80 ADU 75. Transport roller A

76. Empty sensor Z

77. Jam sensor Z

78. Side guide sensor Z

79. End sensor Z

Item to check

Clean at

80,000 copies

ADU counter

Lubricate

Replace Check

x 1,000 while on

Lubrication times: None

Remarks

12 15 17 18 2019

10 16 22 23 24 25

273028 29

47 45 48 40 42

23 24

Front sectional view

7 8

7176787579

36 37 35

72 73 74

32 33

Rear side view

Explanation of items in the “REMARKS” column of the Periodic Inspection Check List *1 Main blade

Clean the main blade with a cloth which should be soaked in water and then squeezed tightly. If poor cleaning occurs due to the adhesion of paper dust, etc., the edge of the blade has been damaged.

Replace the blade regardless of the number of copies made so far.

*2 Recovery blade

If the edge of the blade is damaged, replace the blade regardless of the number of copies made so far.

*3 Separation claw

If the tip of the separation claw has been damaged, replace the claw regardless of the number of copies made so far.

Clean the tip of the claw by lightly wiping with a dry cloth. After cleaning, make sure to remove bits of lint from the claw. In addition, be sure to apply patting powder (lubricant) to the separation claw after cleaning the claw and when replacing the claw or drum.

*4 Drum

Refer to section “3.2 Inspection and Cleaning OPC Drum”.

*5 Clean the white shading board and the original glass at the same time.

If the shading board is stained, a white band may occurr on the copy movement direction. Do not touch the surface of the shading board with your bare hand after cleaning.

*6 Air filter

If the air filter is dirty, replace it.

*7 Charger wire and case

Clean the inner surface of the charger case and the charger wire with a cloth which should be soaked in water and then squeezed tightly.

*8 Grid

Remove the grid from the main charger. Clean the grid with a pad (service part) moistened with water.

*9 Developer material

After replacing the developer material, be sure to adjust the corresponding auto-toner sensor.

*10 Front shield

Clean it with a cloth which should be soaked in water and then squeezed tightly.

*11 Heat roller *12 Pressure roller *13 Cleaning felt roller

Refer to section “3.5 Checking and Cleaning Upper and Lower Heater

 

Roller”.



Refer to section “3.4 Checking and Replacing Cleaning Felt Roller” of this Service Handbook.

*14 Scraper

If the tip of any of the scraper claws is chipped, replace it regardless of the number of copies made so far. If toner adhering to the scraper claw is forcibly scraped off, it may be damaged.

Therefore, if the tip of the claw is heavily coated with toner, replace the claw.

*15 Heat roller cleaning blade

Refer to section “3.6 Checking and Cleaning Heat Roller Cleaning Blade” of this Service Handbook.

*16 Apply white grease to the main motor drive unit gears (shown arrow).

2.4 Oiling Cycle Table

*Number Item to Lubricate Type of Oil

Oiling Cycle

Number of copies x 1000

34 Paper-feed system drive gears (tooth faces)

White grease 50 Heat roller drive gears (tooth faces and idler shafts) Silicone oil 80 51 GCB bushings Launa 40 80

(including paper feed section and fuser unit) 59 Cleaner drive gear 60 Timing pulley shafts 53 Toner cartridge drive gear shaft

White grease White grease White grease

*The number is the same as that in the Periodic Inspection Check List.

Note: Do not apply oil to the rollers, belt and belt pulley.

2.5 Replacement Schedule of Disposable Parts and Supplies

*Number Part Name Code

Replacement Cycle

(Number of copies x 1000) 2 Main (cleaning) blade BL-2460 80 22 4 3 Toner bag TB-2460 20 24 3

Parts List

Page Item

80 80 80

6 Drum separation claw – 80 22 33 8 Drum OD-2460 80 24 1

23 Charger wire – 80

20 6 21 7

25 Grid – 160 20 9 27 Developer material ZD-2460 80 102 3 40 Teflon roller (upper heat roller) 42 Rubber roller (lower heat roller) 43 Cleaning felt roller

HR-2060-U HR-2060-L SR-2060-H

160 25 2 160 26 4

80 25 12

45 Scraper (for heat roller) – 80 26 7

*The number is the same as that in the Periodic Inspection Check List.

2.6 Jig List

Name

Door switch jig 101 1 Developer nozzle jig 101 7 Grid cleaning pad 101 6 Wire holder jig 101 3 Doctor sleeve jig 101 4 Developer unit cap jig 101 2 Current measuring jig 101 10 Drum shaft jig 101 5

Parts List

Page Item

3. PRECAUTIONS FOR STORING AND HANDLING SUPPLIES

3.1 Precautions for Storing TOSHIBA Supplies

A. Toner and Developer

Toner and developer should be stored in a place where the ambient temperature is below 35˚C (95˚F) and should also be protected against direct sunlight during transportation.

B. OPC Drum

Similarly to the toner and developer, selenium drums should be stored in a dark place where the ambient temperature is below 35˚C. Be sure to avoid those places where drums may be subjected to high humidity , chemicals and/or their fumes.

C. Cleaning Blade and Heat-Roller Blade

These items should be stored in a flat place where the ambient temperature is below 35˚C and should also be protected against high humidity, chemicals and/or their fumes.

D. Heat Roller and Pressure Roller

Avoid those places where heat rollers may be subjected to high humidity, chemicals and/or their fumes.

E. Copy Paper

Avoid storing copy paper in a place where the humidity is high. After a package is opened, be sure to place and store it in a storage bag. During wet or winter seasons where the temperature varies much from high to low due to room heating, etc. or where the humidity is high, pull out the cassette from the machine, and put it together with the paper inside in a storage bag upon the completion of copying for the day . Also, instruct the users to do the same.

3.2 Inspection and Cleaning OPC Drum

A. Precautions for Handling

(1)Use of gloves

If fingerprints or oils adhere to the drum surface, characteristics of the photoconductor may degrade, affecting the quality of the copy image; therefore, do not touch the drum surface with your bare hands.

(2)Removing and reinstalling drums

Since the OPC drum surface is very sensitive, be sure to handle the drum carefully when installing and removing it so as not damage its surface. Be sure to apply “patting powder” (lubricant) to the entire surface of the drum and separation claw before installing the drum into the machine. When the drum has been replaced with a new one, 0 (zero) must be input to clear the drum life counter (Setting mode “08”, code “401”).

Notes: 1. Application of the patting powder is to reduce the friction between the drum, cleaning blade,

and separation claw. If the application of patting powder is neglected, the drum and cleaning blade may be damaged.

2. When paper fibers adhere to the cleaning blade edge, they may reduce the cleaning efficiency and, in addition, may damage the blade and the drum. So, if any fibers are found adhering to the blade, be sure to remove them carefully using a soft pad.

(3)Installation of Machine and Storage of Drum

Avoid installing the machine in such places where it may be subjected to high temperature, high humidity, chemicals and their fumes. Do not leave drums in a bright place for a long time, otherwise the drum will fatigue and will not produce sufficient image density immediately after being installed in the machine. However, this effect may decrease as time elapses.

(4)Cleaning the Drum

At periodic maintenance calls, wipe clean the entire surface of the drum using the designated cleaning cotton. Use a sufficient thickness of cleaning cotton so as not to scratch the drum surface inadvertently with your fingertips or nails. Also, remove your ring and wristwatch before starting cleaning work to prevent accidental damage to the drum. Be sure not to use alcohol, selenium refresher and other organic solvents or silicone oil as they will have an undesirable effect on the drum.

(5)Scratches on OPC Drum Surface

If a scratch exists on the surface through which the aluminum substrate can be seen, no copy image will be produced on this area and, in addition, the cleaning blade will be damaged so replacement with a new drum will be necessary.

(6)Collecting Used OPC Drums

Regarding the recovery and disposal of used OPC drums, it is recommended to follow the relevent local regulations or rules.

3.3 Checking Drum Cleaning Blade

(1) Precautions for Handling

Pay attention to the following points as the cleaning blade life is determined by its edge condition: 1 Do not allow a hard object to hit on or rub against the blade edge. Do not rub the edge with a

cloth.

2 Do not leave oil (or fingerprints, etc.) on the edge. 3 Do not put solvents such as thinner, etc. on the edge. 4 Do not deposit dirt such as paper fibers, etc, on the blade. 5 Do not place the blade near a heat source.

3.4 Checking and Replacing Cleaning Felt Roller

(1) Precautions for Handling

Never allow solvents such as thinner, etc, to adhere to the cleaning felt roller.

(2) Poor Heat-Roller Cleaning and Countermeasures

Poor heat-roller cleaning should be judged by the deposited toner on the roller. When the felt roller has heavy toner deposits, the heat-roller surface may be stained with toner. If this happens, replace the cleaning felt roller. The cleaning felt roller will be gradually degraded due to subjection to the heat from the heat roller over a long period of time; therefore, replace it preferably after about 80,000 copies have been made.

3.5 Checking and Cleaning Upper and Lower Heat Rollers

(1) Precautions for Handling

A Upper Heat Roller

1 Do not leave oil (fingerprints, etc.) on the heat roller. 2 Be extremely careful not to allow a hard object to hit on or rub against the roller because the

thin Teflon layer coated on the aluminum substrate is easily damaged and, if damaged, will result in poor drum cleaning.

B Lower Pressure Roller

1 Do not leave oil (fingerprints, etc.) on the roller surface.

(2) Checking

1 Check for staining and damage to the heat roller and clean or replace if necessary. 2 Clean the separation claws and check for chipped claws. 3 Check for cleaning condition of cleaning felt roller. 4 Check the thermistor for proper contact with the heat roller. 5 Check the fused condition of the toner image. 6 Check the heat rollers for proper rotation.

(3) Cleaning Procedure for Heat Rollers

When the heat roller becomes dirty , it will cause paper jamming. In that case, wipe the roller surface clean with cotton soaked in alcohol or heat-roller cleaner “RC60” which contains silicone oil. For a better cleaning effect, clean the roller while it is still warm.

Notes: 1. Be careful not to rub against the Teflon-coated surface with fingernails or hard objects because it

is easily damaged. Do not use silicone oil on the upper heat roller.

2. When the heat roller has been replaced, 0 (zero) must be input to clear the power-on time counter (mode “08”, code “402”) and the fuser running counter (mode “08”, code “403”).

3.6 Checking and Cleaning Heat Roller Cleaning Blade

(1) Precautions for Handling

Do not allow a hard object to hit on or rub against the blade edge.

(2) Checking

When the blade edge becomes dirty, clean it with a cloth soaked in alcohol. If the cleaning blade is damaged, replace it.

TOSHIBA 2460 SERVICE HANDBOOK

Specifications and Main Features

Frequently Asked Questions

User Manual

GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR THE COPIER 2460

1. ADJUSTMENT ITEMS

1.1 Error Codes

1.2 Self-Diagnosis Modes

1.2.1 Input signal check (Test mode 03)

1.2.2 Output signal check (03)

1.2.3 Test Print (Test Mode “04”)

1.2.4 Adjustment mode (05)

1.2.5 Setting mode (08)

1.2.6 How to register/change ID codes (Access control mode)

1.3 Auto-Toner Sensor Adjustment

1.4 Image Density

1.5 Print Image Adjustment

1.5.1 Adjustment of paper aligning value

1.5.2 Printer unit adjustment

1.5.3 Scanner unit adjustment

1.6 Automatic Gamma Adjustment

1.7 Sharpness (HPF) Adjustment

1.8 Gamma Slope Correction

1.9 High-V oltage Adjustment

1.9.1 Adjustment

1.9.2 Precautions

1.9.3 Installation of the Current Measuring Jig

1.10 Installation of Carriage Drive Wire

1.10.1 Wire tension adjustment

Adjustment of carriage 1 and carriage 2

Carriage drive wire assembling

1.11 Image Inclination•Image Distortion

1.11.1 Image inclination

1.11.2 Image distortion

1.12 Lens Unit

1.13 Adjustment of Gap between Drum and Sleeve

1.14 Adjustment of Developer Polarity Position

1.15 Doctor Sleeve Gap Adjustment

1.16 ADU Adjustment

1.16.1 Adjusting the stack guide unit in position

1.16.2 Adjusting ADU side deviation

1.17 Adjusting Cassette Side Deviation

2. PERIODICAL MAINTENANCE

2.1 Inspection every 80,000 Copies

2.2 Inspection and Overhaul every 240,000 Copies

2.3 Periodic Inspection Check List

2.4 Oiling Cycle Table

2.5 Replacement Schedule of Disposable Parts and Supplies

2.6 Jig List

3. PRECAUTIONS FOR STORING AND HANDLING SUPPLIES

3.1 Precautions for Storing TOSHIBA Supplies

3.2 Inspection and Cleaning OPC Drum

3.3 Checking Drum Cleaning Blade

3.4 Checking and Replacing Cleaning Felt Roller

3.5 Checking and Cleaning Upper and Lower Heat Rollers

3.6 Checking and Cleaning Heat Roller Cleaning Blade