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ML-2240 & ML-2245 & ML-1640 Series t rainingFebruary 2008

ML-2240 & ML-2245 & ML-1640 Series t rainingFebruary 2008

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AgendaAgenda

1. Overview

2. Block & Connection Diagram

3. Schematic Key concept

4. Cover Open Sensing

5. Q&A

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. Introduction

Main BoardSMPS

1-1. Overview(ML2240 & ML-2245)

HVPS

W aste Sensor( On ly ML- 224 5 )

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. Introduction

1-2. Overview(ML1640)

Main BoardSMPS

HVPS

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. Introduction

2. Block & Connection Diagram of ML-2240 & 2245

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. Introduction

2-2. Block Diagram of ML-1640

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. Introduction

3. Schematic - Key Concepts

3-1. Main PBA 1(ML-2240&2245)

Mai n Cl ock and SSCG

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. Introduction

3-1. Main PBA 2(ML-2240&2245)

CPU Jupi t er 4e

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. Introduction

SDRAM 8MB * 1ea

3-1. Main PBA 3(ML-2240&2245)

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. Introduction

Mai n Mot or Cont r ol

( BLDC)

3-1. Main PBA 5(ML-2240&2245)

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. Introduction

Fuser Cont r ol

3-1. Main PBA 6(ML-2240&2245)

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3-1. Main PBA 7(ML-2240&2245)

. Introduction

USB 1. 1

( Compat i bl e wi t h USB2. 0)

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3-1. Main PBA 8(Only ML-2245)

. Introduction

Toner Wast e- Sensor

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. Introduction

3-2. Main PBA 1(ML-1640)

Mai n Cl ock and SSCG

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. Introduction

3-2. Main PBA 2(ML-1640)

CPU Jupi t er 4e

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. Introduction

SDRAM 8MB * 1ea

3-2. Main PBA 3(ML-1640)

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. Introduction

EEPROM

GroundGND

Supply VoltageVCC

Organization SelectORG

Serial Data InputDI

Serial Data OutputDO

Serial ClockSK

Chip Select InputCS

3-2. Main PBA 4(ML-1640)

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. Introduction

Mai n Mot or Cont r ol( A3983)

3-2. Main PBA 5(ML-1640)

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3-2. Main PBA 7(ML-1640)

. Introduction

USB 1. 1

( Compat i bl e wi t h USB2. 0)

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II. Summary of Product

3-3. SMPS PBA

AC Input

Socket

Heat LampConnector

Main SMPSConnector

Rear Cover OpenS/W

Paper Feed Sensor

ML- 2240/ 2245

ML- 1640

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Two cover open switches are near front cover & rear cover.If two switches open, 24VS2 for DC fan, main motor, polygonmotor part of LSU and high voltage of HVPS and 5VS for LSU arecut off.And Online/Error LED emits Red light.

Cut off mechanism is like below.

II. Summary of Product

4. Cover Open Sensing

SMPSMain PBA

HVPS

Near front cover

Near rear cover

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II. Summary of Product

5-1. UI

Embody UI using RED LED & 3 color LED.

3 color LED

RED LED

Cancel KEY

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II. Summary of Product

5-2. UI State Diplay

ML-1640 & ML-2240 UI is same.

ML-2245 UI is diferrent from ML-1640& ML-2240 UI.

Because Developer Unit of ML-2245 isseparated into Toner cartridge &Imaging Unit.

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