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9

DP-3520/4520/6020

DP-3510/4510/6010

NOV 2003

Ver. 4.00

This Circuit is controlled by the Reset of IC6 (PST575E) and nPRST Signal from the SC PCB.
If the 5 VDC Power Voltage becomes lower than 3.9 VDC, this circuit generates a Reset Signal. If the 
nPRST signal from the SC PCB is Low, this Circuit also generates a Rest Signal.

The interface uses FIFO with DRV PCB via Serial data.

IC6

PST575E

nPRST

IC1

M30802

R95

C47

R97

Q3

IC10

5V

3. 9V

td

td

td =12.5ms

+5V

IC5

GATE  ARRAY

SPC

DRV

IC7

M66313

DO

UT

CLK

LATCH

ENABLE

LOAD

nGARST

A

CK

nLE

IC4

IC4

IC4

IC4

IC4

nOE

nSD

IC9

74VHC165

CLK

SH/nLD

Qn

IC10

74VHC165

CLK

SH/nLD

Qn

IC11

74VHC165

CLK

SH/nLD

Qn

IC12

74VHC165

CLK

SH/nLD

nQn

SER

SER

SER

SER

IC5

IC5

DIN

IC7

IC7

IC7

IC7

IC7

IC7

IC8

DOUT

CLK

LATCH

LD

DIN

1

2

3

4

5

6

7

8

30 31 32

10

DP-3520/4520/6020

DP-3510/4510/6010

NOV 2003

Ver. 4.00

The DP-3510/3520 Fuser is controlled with two (2) Thermistors and three (3) Fuser Lamps. One 
Thermistor is located at the center and the other one at the edge to measure the temperature correctly.
The DP-4510/4520/6010/6020 Fuser is controlled with a Thermistor and two (2) Fuser Lamps. The 
Thermistor is located in the center.

CN723

9

IC1

+

-

R342

R347

C160

D19

R335

R336

IC20

 CN723

10

R345

C158

Q10

Q14

Q13

R352

R353

R358

CN723

11

+

-

R343

D23

R344

R349

C161

D21

R337

R338

IC20

CN723

12

R348

C159

Q12

Q16

Q15

R356

R357

R359

D20

D17

IC5

CN723

5

CN723

3

CN723

4

R361

R360

QA7

QA7

QA8

QA8

QA9

QA9

R351

R354

R362

CN723

2

R350

R346

R340

R339

C157

R355

Q9

CN723

8

CN723

+24V

D18

11

DP-3520/4520/6020

DP-3510/4510/6010

NOV 2003

Ver. 4.00

Consist of Laser and Polygon Motor Control Circuits.

The DP-3510/3520/6010/6020 Polygon Motor uses an Air bearing.
The DP-4510/4520 Polygon Motor uses a fluid bearing.

IC5

GATE ARRAY

 CN726

pSH_A

pSH_B

nLAZER_A

nHSYNC

IC24

IC24

IC24

IC24

IC24

nLAZER_B

pLAZER_ENB

BDCNT

IC1
CPU

DA1

+

-

SPC

LSU

L+5V

+24VM

IC23

L+5V

R389

Q26

R60

R390

IC22

C173

C172

C170

R415

R416

R417

R418

R396

R397

R398

Q25

R378

R377

D25

5

6

7

8

9

4

3

10

1

2

pS H_ A

pS H_ B

nLAZER _A

nHSYNC

nLAZER _B

Image

IC5

GATE ARRAY

IC1

CPU

pPMCNT

pPMLOCK

PMCLK

+5V

R386

R388

C171

Q23

Q22

CN725

+24VM

1

2

3

4

5

PM

Polygon

Motor

12

DP-3520/4520/6020

DP-3510/4510/6010

NOV 2003

Ver. 4.00

The PNL1 PCB consist of Panel Control CPU, Flash Memory, S-RAM, LCD Controller, Real Time 
Clock and other peripherals. It has no decision making functions, which are controlled by Command 
Signals from the SC PCB.
The PNL2, 3 and 4 consist of LED, Switches and Buzzer, which are controlled by PNL1. 

SCN0 ~5

LED0 ~5

KEYIN0~6

 ADDRES

S BUS 

A21~1

CPU

CPU (SH7041)

SCI

(2 ch)

MTU
(5 ch)

INTC

(8ch+NMI)

NMI

nWAKUP

nSLPKY

nRTCIRQ

FROM  IC

FROM  IC

(Program)

(2 MBx16)

FRM8  PCB

(Progr am

Load )

(4MBx16)

A21~ 1

D15-0

D15-0

A17~1

D15-0

A14~1

D15-0

LCDC
(LCD

Controller)

M66273FP

LCD Module

A3~1

PNL2

(SW/LED Board)

KEY:23
LED :4

D7-0

RTC

(RE AL TIME

CLOCK)

PD4992

SRAM  IC

(WORK)

(128kB x 8)

LEDC T0,1

Touch Panel

TX D

RXD

A/ D

PNL3

(SW/LED Board)

KEY :12
LED :6

D/A Circuit

BUZZER CLK

Control
Circuit

DA5- 0

A 21~1

24V

DC/DC

Converter

3. 3V

IC

5V

BATLVL

24V

5V

PNL4

LED:3