Table of Contents
Advertisement
SERVICE MANUAL
Read this manual carefully, especially precaution on microwave energy, and follow the procedure
strictly. Careless servicing and testing may expose yourself to the microwave energy leakage.
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 if necessary:
(1) Interlock operation, (2) proper door closing, (3) seal and sealing surfaces (arcing, wear, and
otherdamage), (4) damage to or loosening of hinges and latches, (5) evidence of dropping or
abuse.
(c) Before turning on microwave power for any service test or inspection within the
microwave generating 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.
STAINLESS STEEL
MICROWAVE OVEN WITH GRILL
MI N
SE C
AU TO
150w
450w
C
/
Kg
FOREWORD
PRECAUTIONS
FILE No.
EM-SL20NECO
MIN
AUTO
150w
Product Code No.
EM-SL20NECO
1-437-574-25
REFERENCE No.
SEC
450w
C
/
Kg
SM
-2400005
Advertisement
Table of Contents
Related Manuals for Sanyo EM-SL20NECO
Summary of Contents for Sanyo EM-SL20NECO
- Page 1 FILE No. SERVICE MANUAL STAINLESS STEEL EM-SL20NECO MICROWAVE OVEN WITH GRILL AUTO 150w 450w MI N SE C AU TO 150w 450w Product Code No. EM-SL20NECO 1-437-574-25 FOREWORD Read this manual carefully, especially precaution on microwave energy, and follow the procedure strictly.
-
Page 2: Table Of Contents
TABLE OF CONTENTS Adjustment Procedures........1 Circuit Diagram............ 4 Specifications............2 Test Procedures and Troubleshooting....5-12 Power Output Measurement........ 2 Disassembly Instructions........13-14 Precautions and Repair Service Tips....2 Exploded View and Parts list........15-19 Oven Control Panel..........3 Control Circuit Board..........20 Overall Circuit Diagrams........21 CAUTION MICROWAVE ENERGY PERSONNEL SHOULD NOT BE EXPOSED TO... -
Page 3: Specifications
2. SPECIFICATIONS - EM-SL20N 4.PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARY Rated Power Consumption..Micro 1450±10%W Grill 1100+5/-10%W Dual 2500+5/-10%W A.SINCE NEARLY 4,000 VOLTS EXIST IN (After 15mins.) SOME CIRCUITS OF THIS MICROWAVE OVEN, REPAIRS SHOULD BE CARRIED Microwave Output...... 900W( Adjustable 90W OUT WITH GREAT CARE through 900W ) Frequency........ -
Page 4: Oven Control Panel
5. OVEN CONTROL PANEL AUTO 150w 450w Figure 1 KEYS: 1. Display Window 8. Personal Menu Keys 2. Function and Accessary Indicator 9. MIcro Power 3. Kitchen Timer Display 10. Delay Start 4. Auto Program Key 11. Quick Start 5. Auto-Defrost 12. -
Page 5: Circuit Diagram
6.CIRCUIT DIAGRAM EM-SL20N 230V ~ 50Hz OVEN CONDITION DOOR : OPEN L1,L2 = 1mH C1 = 0.22 F TOUCH KEY C2,C3 = 4700PF BOARD R = 1M S101 MTCO/ CFTCO(122û C ) FUSE (8A T) CONTROL CIRCUIT BOARD HT(150û IR (25 ) HIGH VOLTAGE TRANSFORMER MAGNETRON 2M-253H(IF)-N H.V. -
Page 6: Test Procedures And Troubleshooting
7. TEST PROCEDURES AND TROUBLESHOOTING Filament Windings CAUTION - DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVING THE CABINET FROM THE UNIT. PROCEED WITH THE TESTS ONLY AFTER DISCHARGING Secondary Winding THE HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD WIRES FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER. - Page 7 COMPONENT CHECKOUT PROCEDURE RESULTS 1) Measure the resistance : Normal readings : With an ohmeter on Rx1 scale. a. Primary Winding ; Approximately 1.75 ohms. b. Filament Winding ; Less than 1 ohm. c. Secondary Winding ; Approximately 90.11 ohms. 2) Measure the resistance : Normal readings : With an ohm-meter on highest scale.
- Page 8 COMPONENT CHECKOUT PROCEDURE RESULTS Measure the resistance : Across two terminals with an ohm-meter on its highest scale. Normal reading : Indicates continuity. HV FUSE Abnormal reading : Indicates infinite ohms. Figure 10 Measure the voltage : Between test points TP-1,TP-2, CONTROL and ground (See control circuit board on page 20 ).
- Page 9 CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires from the switches and check the continuity of the switches, connecting an ohm-meter to its terminals. SWITCH CHECKOUT PROCEDURES DOOR OPEN DOOR CLOSE Primary Interlock Connect an ohm-meters leads to terminals "COM" and "NO"...
- Page 11 -10- -10-...
- Page 12 -11- -11-...
- Page 13 -12-...
-
Page 14: Disassembly Instructions
8.DISASSEMBLY INSTRUCTIONS C. REMOVING MAGNETRON (See exploded view on page 16 ) - OVEN MUST BE DISCONNECTED FROM ELECTRI- (1) Remove the antenna complete according to CAL OUTLET WHEN MAKING REPLACEMENTS, B. REMOVING THE ANTENNA. REPAIRS, ADJUSTMENTS, AND CONTINUITY (2) Disconnect the 2 lead wires from the magnetron. CHECKS BEFORE PROCEEDING WITH ANY REPAIR (3) Remove 1 screw securing the duct to the WORK AFTER DISCONNECTING. - Page 15 4. The hinge screws should then be tightened to hold the (3) Remove power cord from cavity assembly by door in place, and the feeler gauges removed. lifting cord bush, moving it to the left and pulling it 5. The door gap should then be checked again using feeler away from cavity rear plate.
-
Page 16: Exploded View And Parts List
8. EXPLODED VIEW AND PARTS LIST CAVITY PARTS EM-SL20N Part No. Description Q'ty Part No. Description Q'ty 1 617 220 4376 Cabinet 13 617 221 0025 Heater Complete 2 411 156 5601 SCR TPG PAN+F+S 4x10 14 617 202 4554 Thermostat, 150˚C 3 MO-A0730 Cavity 15 617 167 0431 Duct... - Page 17 SWITCHES AND MICROWAVE PARTS EM-SL20N Part No. Description Q'ty Part No. Description Q'ty 411 010 5600 SCR EVR PAN 3x6 617 195 3428 Latch Lever 411 156 5601 SCR TPG PAN+F+S 4x10 617 189 0839 Lever Stopper 411 156 5502 SCR S-TPG PAN+F+S 4x10 617 244 0651 Door Sensing Switch...
- Page 18 MICROWAVE PARTS EM-SL20N Part No. Description Q'ty 617 209 4557 Transformer 617 225 1721 Special Screw 617 225 6153 Bottom Plate Assembly ------------------ Gear Motor Cover 617 144 5435 Foot Cushion Assembly 617 166 7493 Bottom Hinge 411 156 5602 SCR S-TPG PAN+F+S 4x10 1 617 102 7495 Special Screw -17-...
-
Page 19: Door Parts
DOOR PARTS Inner Door Panel always supplied with Door Main Frame but can be ordered seperately quoting number below. EM-SL20N Part No. Description Q'ty MO-A0748 Door Cover Assembly MO-A0768 Door Main Frame(Supplied 1 with inner Door Panel) 617 144 2472 Glass Inner Door Panel 617 167 0189 Hinge 617 167 1292 Choke Dielectric 617 195 3411 Door Latch... - Page 20 CONTROL PANEL PARTS EM-SL20N Part No. Description Q'ty MO-A0749 Control Base Assembly 617 236 6463 Knob Body 617 219 5520 PCB Complete 617 224 0275 PCB Complete 617 197 4836 PCB Complete 617 181 7980 Latch Lever MO-A0747 Handle Assembly 617 188 3329 Spring 10 617 224 1067 Knob Assembly 11 411 064 6608 SCR TPG BIN 3x8...
-
Page 21: Control Circuit Board
10.CONTROL CIRCUIT BOARD EM-SL20N Model Spares No. M.Processor EM-SL20N 617 224 0275 IC11 LM8842 4 9 7 0 0 -24-... -
Page 22: Overall Circuit Diagrams
11. OVERALL CIRCUIT DIAGRAM EM-SL20N IC 11 LM8842 -21-... - Page 23 Please Note All the information that appears in this service manual was correct at the time of production. SANYO Electric Company reserves the right to make changes to parts or processes in order to maintain their policy of continuing improvement.