Toshiba MR-2017, MR-2020 service manual Circuit Diagram, PWA-F-DLG-644

Page 80

 

 

SCANNER I/F

1

SC-ACK

1

 

SCAN-ST

 

2

2

 

TXD

 

3

3

 

SG

 

4

4

 

RXD

 

5

5

 

SG

J71

6

6

DF-ACK

 

7

7

 

DF-REQ

 

8

8

 

SC-REQ

 

9

9

 

CONECT

 

10

10

 

 

 

J42

 

 

 

11

SG

 

 

12

POWER

 

+5V

SUPPLY

13

+5V

1

 

14

 

DG

2

 

15

 

DG

3

 

16

 

+24V

4

J70

17

+24V

5

 

18

 

 

6

 

19

 

 

FG

7

 

20

 

 

 

 

DOWNLOAD JIG

PWA-F-DLM-320

D0 1

D2 2

D4 3

D6 4

OE 5

A0 6

A2 7

A4 8

A6 9

A8 10

A10 11

A12 12

A14 13

A16 14

PWA-F-DLG-644

 

 

 

SC-ACK

 

 

 

 

SCAN-START JAM-NO

 

1

 

TXD

JAM-COM

CN72

2

 

SG

DF-NO

J72

 

 

3

CN71

RXD

DF-COM

 

4

SG

 

 

 

 

 

 

 

 

DF-ACK

 

 

 

 

DF-REQ

 

 

 

 

SC-REQ

 

 

 

 

DFCNT(SG)

+24V

CN84

 

 

 

 

 

 

FANON

 

 

 

 

 

 

SG

B(-)

 

1

 

+5V

 

 

BCOM

 

2

 

+5V

 

 

B

 

3

CN70

PG

CN76

A(-)

J76

 

PG

 

4

 

ACCM

 

5

 

+24V

 

 

A

 

6

 

+24V

 

 

 

 

 

 

 

B(-)

 

1

 

 

BCOM

 

2

 

 

B

CN77

3

 

 

A(-)

J77

 

 

 

4

 

MD[0]

ACCM

 

5

 

MD[2]

 

 

A

 

6

 

MD[4]

 

 

 

 

 

 

MD[8]

 

 

 

 

MRD

 

 

 

 

MA[0]

 

 

 

 

MA[2]

 

 

 

 

MA[4]

 

 

 

 

MA[6]

 

 

 

 

MA[8]

A1

 

 

 

MA[10]

 

 

 

 

 

 

 

MA[12]

B1

CN78

 

 

MA[14]

A3

 

 

 

 

 

MA[16]

 

 

 

 

 

 

FG NC NO COM

B(-)

6

BCOM

5

B

4

 

A(-)

J66

ACCM

3

2

A

1

 

B(-)

6

BCOM

5

B

4

 

A(-)

J65

ACCM

3

2

A

1

 

NC

NO

COM SW1

M1

M2

Jam access cover opening/closing switch

Original feed motor

Read motor

 

© 2005 - 2009 TOSHIBA TEC CORPORATION All rights reserved

Fig. 8-3

8 - 2 09/12

8.2 Circuit Diagram

A18 15 SG 16 SG 17 D1 18 D3 19 D5 20 D7 21 CE 22 A1 23 A3 24 A5 25 A7 26 A9 27 A11 28 A13 29 A15 30 A17 31 SG 32 +5V 33 LED 34

 

MA[18]

B3

 

 

 

SG

A2,B2

 

 

CN81

SG

 

 

 

 

 

 

 

 

 

 

MD[1]

 

 

 

 

 

 

 

 

 

 

 

 

MD[3]

 

 

 

 

 

 

MD[5]

 

 

 

 

 

 

MD[7]

 

 

 

 

 

 

DLCS

 

 

 

 

 

 

MA[1]

 

 

 

 

 

 

MA[3]

+24V

 

 

 

1

 

 

 

 

 

 

 

MA[5]

PSOL-ON

 

 

 

2

 

MA[7]

 

 

 

 

 

 

PSOL-OFF

CN79

 

J79

3

 

MA[9]

 

 

 

 

 

 

 

 

MA[11]

+24V

 

 

 

4

 

 

 

 

 

 

 

MA[13]

GSOL-ON

 

 

 

5

 

MA[15]

 

 

 

 

 

 

 

 

 

 

 

 

MA[17]

 

 

 

 

 

 

DLCNT

 

 

 

 

 

 

+5V

 

 

 

 

 

 

LED

 

 

 

 

 

+24V PSOL-OFF PSOL-ON

+24V GSOL-ON

1

 

2

J98

3

 

1

J99

2

 

1

J98

2

 

3

1

J99

2

SOL1

SOL2

Original pickup solenoid

Gate solenoid

MR-2017/2020 CIRCUIT DIAGRAM / HARNESS DIAGRAM

Image 80
Contents MR-2017/2020 Trademarks 09/12 Page Contents Control PC Board Circuit Specification MR-2017 MR-2020Specification Main Components Location ComponentsSectional View R4 R2 R3 R1Original tray Registration roller Original exit tray Intermediate transfer rollerElectric Parts Layout SW M1 SOL S7 ADFADF control PC board ADF Controls the ADF Board Symbols and Functions of Various ComponentsSymbol Name Function Diagram of Signal Blocks Description of Interface Signals RxDDescription of Operations Feed motor drive section Read motor drive sectionOriginal feed motor drive section Read motor drive section Read motor Exit roller Pre-reading rollerOriginal Size Detection Original width size Orange Yellow GrayEmpty sensor ON? Power on Standby ADF jam accessCover OPEN? All sensors OFF? Read motor rotates OriginalCertain period Time passed? Sent level High Scanning start signalCertain period Original exit Jam Read motor stopsDescription of Circuit Drive Circuit for Read Motor Reset Circuit Description of Operations Front cover CoverFront cover Jam access cover Rear coverRear cover PinLeft cover Jam access coverLeft cover Original tray Bushing ScrewClip RollerPaper feeder unit Pickup roller PM Feed roller PMShaft Clip Pickup rollerPulley ShaftSeparation roller PM Separation roller unitStay Feeder lower guideOriginal tray Registration roller Exit rollerExit guide Exit rollerPre-reading guide Intermediate transport rollerHinge pin Pre-reading guideConnector Pre-reading rollerPost-reading roller Screw BushingHolder Flange Bearing Bushing Pulley RingBushing Ring Pulley Timing belt Upper guide Spring Motor / Motor drive sectionOriginal feed motor M1 Original feed motor drive section Harness clampRing Bushing Bracket WhiteRead motor M2 Read motorBracket Read motor drive sectionSpring Screw Tensioner Ring Solenoid Original pickup solenoid SOLOriginal pickup solenoid Mark-off lineSensor/switch Original tray width sensor S2Original tray sensor S1 Original tray sensorMetal plate cover Jam access cover sensor S7Original empty sensor S3 Original registration sensor S4 Original empty sensor Original registration sensorRead sensor S5 Original exit/reverse sensor S6ADF opening/closing sensor S8 Radf opening/closing sensorWhite Red Black Jam access cover opening/closing switch SWBracket ADF board PC BoardADF control PC board ADF board Others Hinge stopperAdjustment of Position CheckingAdjustment Adjustment Match the screw hole positions Install the right-hand hinge screw at the rear Place the platen sheet on the original glass Adjustment of Height ~0.2mm 0mmTurn it clockwis Adjustment of Skew 19 Chart OriginalAdjustment Adjustment of the Leading Edge Position 23 Chart OriginalAdjustment of Horizontal Position Adjustment of Copy Ratio Adjustment of ADF Opening/Closing Sensor Troubleshooting Troubleshooting for Mechanical ErrorsTroubleshooting for Electrical Errors Feed signal reception jam JamJam not reaching the original registration sensor Jam not reaching the read sensorRadf jam access cover open Stop jam at the registration sensorStop jam at the read sensor Stop jam at the exit sensorCover open jam in the read ready status Troubleshooting Periodic Maintenance Cleaning Lubrication/Coating Replacement Operation checkRemarks CoatingRewriting ROM Firmware Updating Circuit Diagram / Harness Diagram Assembly of PC BoardCircuit Diagram PWA-F-DLG-644PWA-F-DLG-643 Control PC Board Circuit Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram Circuit Diagram / Harness Diagram

MR-2020, MR-2017 specifications

The Toshiba MR-2017 and MR-2020 are innovative microwave ovens that exemplify Toshiba's commitment to advanced cooking technology and user-friendly design. Designed for modern kitchens, these models combine efficiency and versatility, making them ideal for a wide range of cooking tasks.

The MR-2017 features a compact design perfect for small spaces without compromising on power and functionality. It typically boasts a 700-watt microwave output, providing sufficient energy for heating and cooking various dishes. One of its standout features is the one-touch cooking options, which allow users to select heating times and power levels with a simple press of a button. This functionality is particularly advantageous for busy individuals looking to save time in meal preparation.

On the other hand, the MR-2020 offers enhanced capabilities with a slightly larger capacity and a higher wattage output of 800 watts. This model not only heats food but also includes grill and convection settings, allowing for more versatile cooking methods. With the grilling function, users can achieve crispy textures similar to conventional ovens, while convection cooking promotes even heat distribution for consistent results.

Both models are equipped with advanced technology such as the smart sensor cooking feature. This technology automatically calculates the optimal cooking time based on the food type and quantity, ensuring perfectly cooked meals without any guesswork. Safety is also a priority, with child safety locks that prevent accidental operation, making them suitable for families.

The control panel on both the MR-2017 and MR-2020 is designed for ease of use, featuring intuitive buttons and a clear display, making it accessible for all users. Additional features include defrost settings for quick thawing and various pre-set cooking modes tailored for specific food types like popcorn, pizza, and baked potatoes.

In conclusion, the Toshiba MR-2017 and MR-2020 microwave ovens blend advanced cooking technologies with user-friendly features, catering to diverse culinary needs. Their combination of power, safety, and convenience makes them a valuable addition to any kitchen, ensuring that delicious meals are just minutes away. Whether you're reheating leftovers or trying out new recipes, these models are built to deliver performance and satisfaction.