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8

R-209BW

DESCRIPTION OF LSI

The I/O signal of the LSI are detailed in the following table.

Pin No.

Signal

I/O

Description

1

RESET

IN

Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied. Temporarily
set to “L” level the moment power is supplied, at this time the LSI is reset. Thereafter
set at “H” level.

2

TEST

IN

Connected to GND.

3

VSS

IN

Power source voltage: -5V.
VSS voltage of power source circuit input. Connected to VC.

4

OCS3

IN

Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the resistor oscillation circuit with
respect to OCS4 terminal.

5

OCS4

OUT

Internal clock oscillation frequency control output.
Output to control oscillation input of OCS3.

6

VD1

IN

Power source for oscillation circuit.

7

VDD

IN

Power source voltage input terminal.
Connected to GND.

8

AVDD

IN

A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI. Connected to GND.

9

AVREF

IN

A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI. Connected to GND.

10

AVSS

IN

Power source voltage: -5V.
AVSS voltage of power source circuit input. Connected to VC.

11-13

P40-P42

IN

Terminal to change functions according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the
Model in operation is applied to set up its function.

14

P43

IN

To input signal which communicates the door open/close information to LSI.
Door close “H” level signal (0V).  Door open “L” level (-5V).

15

BZ

OUT

Signal to sound buzzer (2.0 kHz).

A: key touch sound.

B: Completion sound.

16

R00

OUT

Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P23, K00, K01 and K02
terminal while one of G6 line keys on key matrix is touched.

17

R01

OUT

Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P23, K00, K01 and K02
terminal while one of G5 line keys on key matrix is touched.

18

R02

OUT

Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P23, K00, K01 and K02
terminal while one of G4 line keys on key matrix is touched.

19

R03

OUT

Key strobe signal.
SigM nal applied to touch-key section. A pulse signal is input to P23, K00, K01 and K02
terminal while one of G3 line keys on key matrix is touched.

20

P20

OUT

Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P23, K00, K01 and K02
terminal while one of G2 line keys on key matrix is touched.

21

P21

OUT

Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P23, K00, K01 and K02
terminal while one of G1 line keys on key matrix is touched.

22

P22

OUT

Terminal not used.

A

B

0.1 sec.

2.0 sec.

H : GND

L : -5V

H : GND

L : -5V

Summary of Contents for R-209BW

Page 1: ...con tain circuitry capable of producing very high voltage and current contact with following parts may result in a severe possibly fatal electrical shock High Voltage Capacitor High Voltage Power Transformer Magnetron High Voltage Rectifier Assembly High Voltage Harness etc SHARP CORPORATION This document has been published to be used for after sales service only The contents are subject to change...

Page 2: ...nd transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the owner e A microwave leakage check to verify compliance with the Federal Performance Standard should be performed on each oven prior to release to the owner BEFORE SERVICING Before servicing an operative unit perform a microwave emission check as per the Microwave...

Page 3: ...tor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that the leads remain isolated from other components and oven chassis by using insulation tape 6 After that procedure reconnect the power supply cord When the testing is completed 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Reconnect t...

Page 4: ...oven until the following points are ensured A The door is tightly closed B The door brackets and hinges are not defective C The door packing is not damaged D The door is not deformed or warped E There is no other visible damage with the oven Servicing and repair work must be carried out only by trained service personnel DANGER Certaininitialpartsareintentionallynotgroundedandpresentariskofelectric...

Page 5: ... Power for Variable Cooking Repetition Rate P HI Full power throughout the cooking time P 90 approx 90 of FULL Power P 80 approx 80 of FULL Power P 70 approx 70 of FULL Power P 60 approx 60 of FULL Power P 50 approx 50 of FULL Power P 40 approx 40 of FULL Power P 30 approx 30 of FULL Power P 20 approx 20 of FULL Power P 10 approx 10 of FULL Power P 0 No power throughout the cooking time EXPRESS DE...

Page 6: ...N POWER TRANSFORMER RECTIFIER MAGNETRON CAPACITOR 0 86µF C T FUSE 120V AC 60 Hz OVEN LAMP TURN TABLE MOTOR FAN MOTOR MONITOR SWITCH SECONDARY INTERLOCK SWITCH TTM OL FM GRN A3 COM N O DOOR SENSING SWITCH B1 B2 RY 1 RY 2 CONTROL UNIT PRIMARY INTERLOCK RELAY MAGNETRON THERMAL CUT OUT A1 SCHEMATIC NOTE CONDITION OF OVEN 1 DOOR CLOSED 2 CLOCK APPEARS ON DISPLAY Figure O 1 Oven Schematic Off Condition ...

Page 7: ...stalled 8 Run the oven and check all functions TEST PROCEDURES PROCEDURE LETTER COMPONENT TEST 1 Disconnect the power supply cord and then remove outer case 2 Open the door and blocked it open 3 Discharge high voltage capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that these leads remain isolated from other components and oven chassis by using insulation tape 6 A...

Page 8: ...eshooting guide given below if indicator does not light up after above check and repairs are finished 1 Disconnect the power supply cord and then remove outer case 2 Open the door and block it open 3 Discharge high voltage capacitor 4 Disconnect the leads to the primary of the power transformer 5 Ensure that these leads remain isolated from other components and oven chassis by using insulation tap...

Page 9: ...uzzer circuit and syn chronizing signal circuit 1 ACL This circuit generates a signal which resets the LSI to the initial state when power is supplied 2 Indicator Circuit This circuit consists of 4 digits 12 segments and 3 common electrodes using a Liquid Crystal Display TOUCH CONTROL PANEL ASSEMBLY OUTLINE OF TOUCH CONTROL PANEL 3 Power Source Circuit This circuit generates voltage necessary in t...

Page 10: ...Model By using the A D converter contained in the LSI DC voltage in accordance with the Model in operation is applied to set up its function 14 P43 IN To input signal which communicates the door open close information to LSI Door close H level signal 0V Door open L level 5V 15 BZ OUT Signal to sound buzzer 2 0 kHz A key touch sound B Completion sound 16 R00 OUT Key strobe signal Signal applied to ...

Page 11: ...inal not used 32 33 SEG0 SEG1 OUT Terminal not used 34 SEG2 OUT Magnetron high voltage circuit driving signal To turn on and off the cook relay RY2 The signals holds L level during microwave cooking and H level while not cooking In other cooking modes variable cooking the signal turns to H level and L level in repetition according to the power level 35 SEG3 OUT Terminal not used 36 SEG4 OUT Oven l...

Page 12: ...5v R10 15k R50 20kF R20 15k R6 15k R5 1k HZ4C3 ZD1 C3 0 01µ 25v C40 0 01µ 25v C5 0 1µ 25v C6 0 1µ 25v C7 0 1µ 25v C4 S12 SEG19 VC3 B Z R00 R01 R02 R03 P20 P21 P22 P23 K00 K01 K02 K03 COM0 COM1 VC2 VC1 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 S11 S10 S 9 S 8 S 7 S 6 S 5 S 4 S 3 S 2 S 1 C 1 C 2 C 3 0 01µ 25v C11 0 01µ 25v SP1 PKM22EPT D20 J1 D21 RY2 AC120V 60Hz OVEN LAMP TURNTABLE MOTOR FAN MOTOR DOOR SE...

Page 13: ...th key unit and LCD 1 BA 3 2 1 FUNTKB008WREZ Key unit 1 AV 3 2 2 RLCDSA045DRE0 Liquid crystal display 1 AM 3 3 QCNC A012WRE0 Rubber connector 1 AF 3 4 XEPSD30P08XS0 Screw Control unit mtg 3 AA OVEN PARTS 4 1 PHOK A105WRF0 Latch hook 1 AL 4 2 LANGQA477WRW0 Light mount plate 1 AY 4 3 PCUSUA502WRP0 Waterproof cushion 1 AD 4 4 LBNDKA038WRP0 Capacitor holder 1 AF 4 5 NFANJA029WRE0 Fan blade 1 AL 4 6 PD...

Page 14: ... label 1 AB SCREWS AND WASHERS 7 1 XHPSD40P08K00 Screw 4mm x 8mm 5 AA 7 2 LX EZA042WRE0 Special screw 2 AB 7 3 LX WZA028WRE0 Special washer 1 AB 7 4 LX CZA078WRE0 Special screw 2 AC 7 5 XHTSD40P08RV0 Screw 4mm x 8mm 5 AA 7 6 XHPSD30P06000 Screw 3mm x 6mm 1 AA 7 7 LX CZ0052WRE0 Special screw 2 AA 7 8 XOTSD40P12000 Screw 4mm x 12mm 6 AA 7 9 XOTSE40P08000 Screw 4mm x 8mm 4 AA 7 10 LX CZA071WRE0 Speci...

Page 15: ...11 2 1 7 11 7 10 7 10 7 9 7 5 4 6 4 4 4 9 7 1 7 8 7 7 4 10 7 1 1 12 7 4 7 8 7 4 4 1 2 2 2 3 7 8 7 8 4 13 2 3 7 2 4 16 7 3 1 10 6 11 1 11 7 5 7 12 1 3 1 7 7 6 1 1 1 1 1 2 1 6 1 5 7 9 7 1 1 8 6 10 6 10 4 7 6 12 4 11 6 2 6 1 4 15 4 8 6 7 4 5 4 12 6 9 7 8 1 9 1 4 4 3 4 2 4 14 4 14 1 2 4 17 7 5 A A ...

Page 16: ...rol panel foil side of Control unit must be cleaned by ethyl alcohol 2000SHARP CORP 6S2 530E Printed in U S A COPYRIGHT 2000 BY SHARP CORPORATION ALL RIGHTS RESERVED No part of this publication may be repro duced stored in retrieval systems or trans mitted in any form or by any means elec tronic mechanical photocopying record ing or otherwise without prior written per mission of the publisher CONT...

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