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PRECAUTIONS

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 micro-

wave 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.

(c) Before turning on microwave power for any service test or inspection within the microwave generating compart-

ments, 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.

SERVICE MANUAL      

Microwave Oven

     EM-C1900 (U.K)

REFERENCE NO.

 SM-6310022-00

Pro.Code No.   Model No.
437 623 00        EM-C1900UK

Foreword

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.

Summary of Contents for EM-C1900

Page 1: ...ve power for any service test or inspection within the microwave generating compart ments 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 ma...

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Page 4: ...GRAM Caution The voltage between filament leads of magnetron is about 3 3VA C but the filament carries 4KV D C high voltage with respect to grand Never touch these lead with bare hand during operation Figure 2 㧱㧹㧙㧯㧝㧥㧜㧜 ...

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Page 8: ...P 1 TP 2 TP 3 and ground See Figure 12 on page 23 Note Proceed with the check of the control P C B to see if any one of the measured values is different from the specified values CHECKOUT PROCEDURE RESULT Normal reading Connection Pin No Voltage S105 3 to 4 DC 12V 3 to 5 DC 16V 3 to 2 DC 30V 3 to 1 DC 35V S104 1 to 2 AC 2 4V Test point TP Voltage TP 1 DC 5V TP 2 DC 12V TP 3 DC 16V TP 4 DC 35V WARN...

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Page 15: ...nformation the following consumable components shoud be replaced Maintenance light in window display indicates when accumulativ cooking time reaches 1 250 hours 1 Magnetron Tubu Part No 415 003 1709 2 Printed Circuit Board Relay Part No 617 202 0150 3 Switch base Assembly Part No 617 206 7865 4 Door Latch part No 617 068 1087 When more than 2 000 hours of accumulative cooking time is observed the ...

Page 16: ...s marked with this sign have special characteristics important for microwave leakage When replacing any of these parts use only manufacturers specified parts 9 17 3x8 11 11 12 13 8 19 7 20 4x12 4x12 18 6 14 16 16 4x10 4x12 4x12 2 3x8 M2 4x12 3 1 5 15 10 4x12 ...

Page 17: ...n have special characteristics important for microwave leakage When replacing any of these parts use only manufacturers specified parts 29 30 24 31 33 34 34 35 28 3x6 31 30 29 26 25 4x8 23 4x12 21 3x10 3x6 3x12 4x10 36 37 22 3x8 27 ...

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Page 19: ...ge exceeding 250V Parts marked with this sign have special character istics important for microwave leakage When replacing any of these parts use only manufacturers specified parts 11 10 12 14 14 13 9 8 17 15 16 3x30 4x12 6 1 5 4x10 M5 2 4 2 3 1 4x10 4x10 4x10 M5 4x18 3x6 3 3x6 6 ...

Page 20: ...ed with high voltage exceeding 250V Parts marked with this sign have special characteristics important for microwave leakage When replacing any of these parts use only manufacturers specified parts 18 19 19 20 20 M5 28 26 26 25 M5 23 21 22 4x10 ...

Page 21: ...ICRO SWITCH DR SENS V 5330DK 1 11 617 178 1182 LATCH LEVER 1 12 617 178 1175 LATCH LEVER 1 13 617 178 1168 LATCH LEVER 1 14 617 178 1205 SPRING SUS304 WPB D0 65 2 15 617 178 1212 SPRING SUS304 WPB D0 65 1 16 617 187 2217 SPRING SUS304 WPB D0 7 1 17 617 178 1151 LEVER STOPPER 6 6NYLON G 15 1 18 617 214 6553 HARNESS WITH DIODE 1 19 617 214 4474 HV TRANSFORMER N5T C1850 2 20 617 080 4196 SPECIAL SCRE...

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Page 23: ...266 5191 KEY BOARD T0 9 1 2 617 206 0873 CONTROL PLATE ACRIL 2 0 1 3 617 120 3493 CONTROL BASE UPPER 1 4 617 201 9895 ORNAMENT PLATE LOWER 1 5 617 073 7616 CAVITY GASKET 1 6 617 073 9672 PACKING COVER SECC T0 6 1 7 617 220 7667 P C B COMP D BOARD 1 8 617 125 9872 INSU SHEET PVC T0 4 1 9 617 208 3377 CONTROL COVER T0 1 1 ACCESARIES KEY No SERVICE PARTS DESCRIPTION Q TY 1 617 130 3797 MENU LABEL 1 2...

Page 24: ... 2 8 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 84 8 4 5 2 10 614 59 4 4 01 5 6 4 24 06 4 7 6 1 4 06 4 1 59 06 4 1 59 10 614 59 4 4 4 4 6 6 6 6 8 6 6 6 6 75 75 6 4 2416 614 8 64 05 14 4 0 6410 19 4 8 64 05 14 4 6 4 2416 614 8 0 6410 722 4 12 0 12 0 12 0 12 0 4 5 Ǵ 8 Ǵ 8 5 ǡ ǡ Ǵ 8 4 4 4 856 Ǵ 8 8 2 Ǵ 8 4 5 8 8 3 5 2 5 2 856 5 5 5 2 5 5 2 8 8 Ǵ 8 Ǵ 8 Ǵ 8 26 4 5 5 2 2 2 2 4 4 4 3 8 4 5 2 4 4 ǡ 4 ǡ 4 5 8 2 4 4 Ǵ 8...

Page 25: ...2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 4 5 2 2 2 0 2 2 12 0 4 Ǵ 8 3 3 ǡ 4 4 4 4 4 3 3 8 8 5 2 8 2 Ǵ 8 8 2 8 8 3 3 8 4 5 ǡ 4 4 3 3 4 4 4 4 8 5 2 3 2 4 4 4 4 2 4 4 8 4 4 Ǵ 8 4 ǡ 3 5 8 3 3 3 3 4 4 8 3 㨛㨛㨞 5㨑㨚㨟㨕㨚㨓 59 4 8 4 2 8 2 8 8 4 4 8 8 5 2 4 4 4 Ǵ 8 4 5 8 3 4 4 4 Ǵ 8 ...

Page 26: ... 25 CONTROL CIRCUIT BOARD Figure 12 62 62 TQWPF 62 62 ...

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Page 28: ... 27 SANYO Electric Co Ltd OSAKA Japan ...

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