User Manual

ManualsBrandsSANYO ManualsMicrowave OvenEMP673BS

CAUTIONCAUTION

CAUTION

ARNING TO SERARNING TO SER

ARNING TO SER

VICE TECHNICIANSVICE TECHNICIANS

VICE TECHNICIANS

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING

SERVICING TO AVOID POSSIBLE EXPOSURE TO

EXCESSIVE MICROWAVE ENERGY

(a) Do not operate or allow the oven to be operated with the door open.

(b) Make the following safety checks on all ovens to be serviced before activating the magnetron or other

microwave source, and make repairs as necessary :

(1) Interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and other damage),

(4) damage to or loosening of hinges and latches, (5) evidence of dropping or abuse.

compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity,

and connections.

(d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and

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.

File No :File No :

File No :

SUPPLEMENT OF SUPPLEMENT OF

SUPPLEMENT OF

MicrMicr

Micr

owave Ovenowave Oven

owave Oven

EM-P673BS (U.S.A.)EM-P673BS (U.S.A.)

EM-P673BS (U.S.A.)

SER SER

SER

VICE MANUALVICE MANUAL

VICE MANUAL

The following parts are different from the parts on model EM-P672WS (SM-860245)

REFERENCE NO. SS-860246

MAY ‘99. 1200 LT Printed in Singapore

For Parts or Service ContactFor Parts or Service Contact

For Parts or Service Contact

SANYO FISHER SERSANYO FISHER SER

SANYO FISHER SER

VICE COMPVICE COMP

VICE COMP

ANYANY

ANY

21605 Plummer Street,

Chatsworth, CA91311 U.S.A.

Pr Pr

oduct Code No.oduct Code No.

oduct Code No.

437 482 05437 482 05

437 482 05

See the Service Manual of EM-P672WS (SM-860245)

except the items described in this Service Manual.

Key

Part No. Description

No.

CAVITY PARTS

1 617 162 1792 Cabinet

DOOR PARTS

1 617 210 7264 Door Cover

2 617 210 7585 Door Panel

3 617 201 2445 Door Main Frame

Key

Part No. Description

No.

CONTROL PANEL PARTS

1 617 221 6416 Control Sheet

6 617 210 7295 Control Frame

9 617 210 7288 Door Release Lever

* 617 221 6256 Carton Box Complete

* 617 221 6126 Name Plate

Summary of content (24 pages)

PAGE 1
File No : SUPPLEMENT OF SER VICE MANUAL SERVICE Micr owave Oven Microwave EM-P673BS (U.S.A.) The following parts are different from the parts on model EM-P672WS (SM-860245) Key No. Part No. Description Part No. Description CONTROL PANEL PARTS CAVITY PARTS 1 Key No.
PAGE 2
File No : SER VICE MANUAL SERVICE Micr owave Oven Microwave EM-P672WS Pr oduct Code No. Product (U.S.A.) 437 482 03 CAUTION WARNING TO SER VICE TECHNICIANS SERVICE PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY (a) Do not operate or allow the oven to be operated with the door open.
PAGE 3
In the area emitting the highest reading, switch the meter to SLOW RESPONSE, and take a reading for minimum of three (3) seconds. We recommended the pattern outline shown below when the door surface is surveyed. CAUTION For micr owave ener gy emission microwave energy On every service calls, check for microwave energy emission, must be made according to the following manner.
PAGE 4
- TABLE OF CONTENTS Adjustment Procedures ................................................... Specifications .................................................................. Power Output Measurement ........................................... Precautions and Repair Service Tips .............................. Circuit Diagram ............................................................... 1 2 2 2 3 1 .
PAGE 5
4 . PRECAUTIONS AND REP AIR SER VICE TIPS REPAIR SERVICE 2 . SPECIFICA TIONS SPECIFICATIONS Rated Power Consumption .. 1650W. Microwave Output ................ 1100W. Frequency ............................. 2,450MHz±50MHz. Power Supply ........................ 120V±12V, 60Hz. Rated Current ....................... 14.0 Amp. Safety Devices ..................... Thermal Fuse open at 332°F (167°C) for Cavity. Thermal Protector open at 252°F (122°C) for Magnetron.
PAGE 6
5.
PAGE 7
Filament Windings 6. TEST PROCEDURES AND TROUBLESHOOTING CAUTION - DISCONNECT THE POWER SUPPL Y CORD FROM SUPPLY THE W ALL OUTLET WHENEVER REMOVING THE WALL CABINET FROM THE UNIT UNIT,, PROCEED WITH THE TESTS ONL Y AFTER DISCHARGING THE HIGH ONLY VOL ACITOR AND REMOVING THE LEAD VOLTTAGE CAP CAPACITOR WIRES FROM THE PRIMAR Y WINDING OF THE PRIMARY HIGH VOL VOLTTAGE TRANSFORMER. (SEE FIGURE 3) Secondary Windings Primary Windings Figure 3 A.
PAGE 8
COMPONENT CHECKOUT PROCEDURE RESUL RESULTT Measure the resistance : Across two terminals with an Ohm-Meter on highest scale. HIGH-VOLTAGE CAPACITOR including BLEEDER RESISTOR Normal reading : Momentarily indicates several Ohms, and gradually returns to 10 Meg-Ohms. Abnormal reading : Indicates continuity or 10 Meg-Ohms from the beginning. Ohm-Meter Figure 7 Measure the resistance : Across two terminals with an Ohm-Meter on R x 10,000 scale.
PAGE 9
COMPONENT CHECKOUT PROCEDURE RESUL RESULTT Measure the resistance between terminals of FPC connector after removing it from S101. (Figure 9). TOUCH KEY BOARD NOTE - When reconnecting the FPC connector, make sure the holes on the connector are properly inserted in hooks of the plastic fastener in S101.
PAGE 10
-7- b Check power supply voltage on Control Circuit Board. (See page 5) Control Circuit Board. Check 120VAC power supply of Connector S1 between Pin 1 and Pin 3 after removing Connector S1 from Control Circuit Board. a (1) PROBLEM No display or mis-display in the display window by touching the keys. STEP B. TROUBLESHOOTING Voltage incorrect. Each voltage OK. 120 Volts. 0 Volt. Check resistance of Touch Key Board. (See page 6) Touch Key Board. Resistance incorrect.
PAGE 11
-8- Door Sensing Switch. Touch “START” key and measure voltage between white wire lead and black wire lead for primary winding of H.V. Transformer after removing the wire leads from terminals of H.V. Transformer. a (3) PROBLEM Oven does not heat up. Continuity OK. 0 Volts. AC 120 Volts. No continuity. Check contact of Connector S102. CHECK : 1 . Power Supply to Oven. 2 . Primary Interlock Switch. 3 . Thermal Protector for Magnetron and Thermal Protector for Cavity.
PAGE 12
-9- Check resistance of each winding after removing lead wires. (See page 4) H.V. Transformer. Check operation of Blower Motor when “START” key is touched. a (4) PROBLEM Low microwave power output. b STEP No operation. Normal operation. Resistance incorrect. Normal operation. Replace H.V. Transformer. Check H.V. Capacitor or H.V. Diode with an Ohm-Meter after removing lead wires. (See page 5) Normal resistance Normal H.V. Capacitor or H.V. Diode. Normal Magnetron.
PAGE 13
- 10 - Set power level at “50”. a H.V. Transformer. Touch “START” key and measure voltage between white wire lead and black wire lead for primary winding of H.V. Transformer after removing the wire leads from terminals of H.V. Transformer. Check normal operation of Control Circuit Board. (6) PROBLEM No buzzing by touching keys and at the end of cooking. a (5) PROBLEM The Magnetron operates on high level when a lower cook power is selected. STEP 120V Voltage cycles on and off.
PAGE 14
7 . DISASSEMBL Y INSTRUCTIONS DISASSEMBLY B. REMOVING PRIMAR Y INTERLOCK SWITCH AND PRIMARY INTERLOCK MONITOR SWITCH • OVEN MUST BE DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPLACEMENTS, REP AIRS, REPAIRS, ADJUSTMENTS AND CONTINUITY CHECKS BEFORE PROCEEDING WITH ANY REP AIR WORK. AFTER REPAIR DISCONNECTING, W AIT A WAIT ATT LEAST 1 MINUTE, UNTIL THE CAP ACITOR IN THE HIGH-VOL CAPACITOR HIGH-VOLTTAGE AREA HAS FULL Y DISCHARGED.
PAGE 15
C. REMOVING BLOWER MOTOR Duct (mag. exhaust) Blower Base (Figures 11 (Top View) and 12). (1) Remove screw securing the stay. Thermal Protector Screw (2) Disconnect all lead wires from the Blower Motor and H.V. Capacitor. (3) Remove 2 screws securing the Blower Base and disengage 3 hooks from the Rear Plate of Cavity (Figure 12). (4) Remove 1 screw securing the Blower Motor with the Blower Base. D. REMOVING MAGNETRON Stay (Figure 11 (Top View)) Duct (mag.
PAGE 16
E. REMOVING FUSE Remove the 20A Fuse with a screwdriver. -- NOTE When replacing the 20A Fuse, be sure to use an exact repair part. Control Base F. -- If the 20A Fuse blows immediately, check the Primary Interlock Switch, the Relay 2 (on the Control Circuit Board) and the Interlock Monitor Switch according to, “CHECKOUT PROCEDURE FOR SWITCHES” on page 6. And make sure to check the microwave energy leakage according to, “1.
PAGE 17
H. REMOVING DOOR J. REMOVING CA VITY COVER CAVITY (Figure 16) (1) Remove 2 hex nuts securing the upper hinge. (1) Remove a screw from the Cavity compartment. (2) Tilt the top of the Door toward you. (3) Lift up the Door to remove it. NOTE - After replacing the Door, be sure to check that the Primary Interlock Switch, the Door Sensing Switch and the Interlock Monitor Switch operate normally. (See page 1). - After replacing the Door, check for microwave energy leakage with a leakage detector.
PAGE 18
8 . EXPLODED VIEW AND P AR TS LIST PAR ARTS CAVITY PARTS *** Key No. 1 2 3 4 5 6 7 8 9 10 11 12 13 ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Part No.
PAGE 19
SWITCHES AND MICROWAVE PARTS *** Key No. ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Part No.
PAGE 20
DOOR PARTS *** Key No. ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Part No. Description 1 2 3 617 207 0322 617 207 0360 617 201 2421 4 617 124 6490 Door Cover*** Door Panel*** Door Main Frame*** (Also order Door Sheet when replacing Door Main Frame) Choke Dielectric*** Q’ty Key No. 1 1 1 5 6 7 8 9 10 1 - 17 - Description Part No.
PAGE 21
CONTROL PANEL PARTS *** Key No. ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Part No.
PAGE 22
CONTROL CIRCUIT BOARD (Part No.
PAGE 23
CONTROL CIRCUIT BOARD (Part No. 617 220 2952 2952) Key No. Order Part No. Description Q’ty INTEGRATED CIRCUIT. IC11 409 452 0901 405 035 4809 Q101, 105 Q11, 12 Q102, 103 IC LM8846-124FP 1 2SC1685-Q-TP. 1 405 082 4609 DTA123YS-TP. 2 405 005 8400 2SA854-Q-T93. 2 405 000 1802 DTA143XS-TP. 2 DIODES. D11, 12 407 012 0200 D101 ~ 107 1N4002-TP. 2 407 012 4406 1SS133-TP. 7 ZD101 407 132 2306 HZS3.9NB2. 1 ZD11 407 057 0500 RD5.6ESB3.
PAGE 24
9 .