Acer R-1200 Manual de Serviço Página 1

39R-1200R-1201In the interest of user-safety the oven should be restored to itsoriginal condition and only parts identical to those specified shouldbe

8R-1200R-1201DESCRIPTION AND FUNCTION OF COMPONENTS3. If the door is opened, and the secondary interlock relay(RY2) and primary interlock switch conta

9R-1200R-1201TROUBLESHOOTING GUIDENever touch any part in the circuit with your hand or an uninsulated tool while the power supply is connected.When t

10R-1200R-1201CK = Check / RE = ReplacePOSSIBLE CASE AND DEFECTIVE PARTSPROBLEMTEST PROCEDURECONDITIONOFFCONDITIONIDLECONDITIONMICROWAVECOOKINGCONDITI

11R-1200R-1201B POWER TRANSFORMER TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. O

12R-1200R-1201TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block i

13R-1200R-1201TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2. Open the door and block i

14R-1200R-1201I BLOWN MONITOR FUSE TESTTEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case.2.

15R-1200R-1201TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTThe following symptoms indicate a defective key unit.a) When touching the pads, a certain pa

16R-1200R-1201TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST1. Disconnect the power supply cord, and then remove outer case. Refer to procedure of "

17R-1200R-1201TEST PROCEDURESPROCEDURELETTERCOMPONENT TESTMenu 1ST STAGE 2ND STAGESteaks/Chops LEVEL TIME LEVEL TIME0.5lbs 60% 57sec. 40% 17sec.(8) If

40R-1200R-1201PRECAUTIONS TO BE OBSERVED BEFORE ANDDURING SERVICING TO AVOID POSSIBLE EXPO-SURE TO EXCESSIVE MICROWAVE ENERGY(a) Do not operate or all

18R-1200R-1201TEST PROCEDURESPROCEDURELETTERCOMPONENT TEST8) Disconnect the power supply cord.9) Open the door and block it open.10) To discharge high

19R-1200R-1201DESCRIPTION OF LSILSIThe I/O signal of the LSI is detailed in the following table.Pin No. Signal I/O Description1-2 VL2-VL1 IN Power sou

20R-1200R-1201Pin No. Signal I/O Description30 XIN IN Internal clock oscillation frequency input setting.The internal clock frequency is set by insert

21R-1200R-1201Pin No. Signal I/O Description73/74 VCC/VREF IN Connected to GND.75 AVSS IN Connected to VC.76 COM3 OUT Terminal not used.77 COM2 OUTCom

22R-1200R-12011. Precautions for Handling Electronic ComponentsThis unit uses CMOS LSI in the integral part of thecircuits. When handling these parts,

23R-1200R-1201Microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts mayresult in severe,

24R-1200R-12011. Disconnect the power supply cord , remove the ovenfrom wall and remove outer case (Refer to procedure of"Removal of Oven from Wa

25R-1200R-12016. Disconnect high voltage wire A from capacitor.7. Remove the fan duct assembly from the oven cavity,referring to the procedure of &quo

26R-1200R-12011. Disconnect the power supply cord.2. Open the door and block it open.3. To discharge the high voltage capacitor, wait for 60seconds.4.

27R-1200R-12011. Disconnect the power supply cord.2. Open the door and block it open.3. To discharge the high voltage capacitor, wait for 60seconds.4.

1R-1200R-1201WARNING TO SERVICE PERSONNELMicrowave ovens contain circuitry capable of pro-ducing very high voltage and current, contact withfollowing

28R-1200R-1201DOOR ASSEMBLY REMOVAL1. Disconnect the power supply cord and remove the ovenfrom wall and remove outer case. (Refer to procedure of"

29R-1200R-12011. Disconnect the power supply cord.2. Open the door and block it open.3. To discharge the high voltage capacitor, wait for 60seconds.4.

30R-1200R-1201645123645123ABCDEFGHABCDEFGHFigure S-1. Pictorial DiagramHIGH VOLTAGERECTIFIERHIGH VOLTAGECAPACITORHIGH VOLTAGEWIRE AHIGH VOLTAGE COMPON

31R-1200R-1201645123645123ABCDEFGHABCDEFGHFigure S-2. Power Unit CircuitN.OCOMN.OCOMB-1C 1C 2C 3C 4C 6C 5C 9+–+–B-2T1AC(N)GNDVAINTBUZZERMICROOVEN LAMP

32R-1200R-1201Figure S-3. LSI Unit Circuit645123645123ABCDEFGHABCDEFGHC 1C 2C 5G11G12 G 9G 8KEY UNITG 7 G 6 G 5 G 4 G 3 G 2 G 1G10C 3C 9C1 0.1µ/50vC60

33R-1200R-1201645123645123ABCDEFGHABCDEFGHFigure S-4. Printed Wiring BoardCN - FDIPR53R52(J2)21R50RY1 RY2D22CN - A(J1)D3D4T1S115358PD1D2QKITPB036MRE0Z

34R-1200R-1201PARTS LISTNote: The parts marked “∆” may cause undue microwave exposure.The parts marked “*” are used in voltage more than 250V. "§

35R-1200R-1201REF. NO. PART NO. § DESCRIPTION Q'TY CODE∆∆∆∆∆∆4- 8 PPACGB014MRF0 M Turntable motor packing 1 AA4- 9 PHOK-B018MRF0 M Latch hook 1

36R-1200R-1201645123645123ABCDEFGHABCDEFGH6-66-76-56-16-1-16-1-26-1-36-1-76-26-1-56-1-66-1-45-2-25-2-35-2-15-2-55-2-135-2-75-2-95-2-85-2-105-2-115-25-

37R-1200R-1201645123645123ABCDEFGHABCDEFGHOVEN AND CABINET PARTS4-102-44-177-61-101-96-94-176-87-57-57-57-57-1A6-107-24-134-154-87-82-12-61-137-27-21-

2R-1200R-1201MICROWAVE MEASUREMENT PROCEDUREA. Requirements:1) Microwave leakage limit (Power density limit): The power density of microwave radiation

38R-1200R-1201COPYRIGHT © 2001 BY SHARP CORPORATIONALL RIGHTS RESERVED.No part of this publication may be reproduced, storedin retrieval systems, or t

3R-1200R-1201SHARP ELECTRONICS CORPORATIONSHARP PLAZA, MAHWAH,NEW JERSEY 07430-2135SERVICE MANUALOVER THE COUNTERMICROWAVE OVENR-1200/ R-1201FOREWORDT

4R-1200R-1201ITEM DESCRIPTIONPower Requirements 120 Volts / 14.1 Amperes60 HertzSingle phase, 3 wire groundedPower Output 1100 watts (IEC TEST PROCEDU

5R-1200R-1201Electrical RequirementsThe oven is equipped with a 3-prong grounding plug. DO NOT UNDER ANY CIRCUMSTANCES CUT OR REMOVE THEGROUNDING PIN

6R-1200R-1201OPERATIONDESCRIPTION OF OPERATING SEQUENCEThe following is a description of component functions duringoven operation.OFF CONDITIONClosing

7R-1200R-1201SCHEMATICNOTE: CONDITION OF OVEN1. DOOR CLOSED.2. COOKING TIME PROGRAMMED.3. VARIABLE COOKING CONTROL "HIGH".4. "START&quo