Advertisement

Quick Links

ORDER NO.PHAMOS0509034C3
Microwave Oven
NN-G385MF
ZPE(CIS Countries)
SPECIFICATIONS
2005 Panasonic Home Appliances Microwave Oven (Shanghai)
Co., Ltd. / All rights reserved. Unauthorized copying and
distribution is a violation of law.
1
PDF created with pdfFactory Pro trial version
www.pdffactory.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the NN-G385MF and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Summary of Contents for Panasonic NN-G385MF

  • Page 1 ORDER NO.PHAMOS0509034C3 Microwave Oven NN-G385MF ZPE(CIS Countries) SPECIFICATIONS 2005 Panasonic Home Appliances Microwave Oven (Shanghai) Co., Ltd. / All rights reserved. Unauthorized copying and distribution is a violation of law. PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 2 PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 3 PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 4: Schematic Diagram

    1. SCHEMATIC DIAGRAM PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 5: Description Of Operating Sequence

    2. DESCRIPTION OF OPERATING SEQUENCE 2.1. Variable power cooking control High Voltage Inverter Power Supply (U) controls output power by the signal from Digital Programmer Circuit (DPC). Power relay always stays ON, but PWM (pulse width modulation) signal controls microwave output power. NOTE: The ON/OFF time ratio does not correspond with the percentage of PDF created with pdfFactory Pro trial version...
  • Page 6 microwave power since approximately 2 seconds are required for heating of magnetron filament. Variable Power Cooking POWER SETTING OUTPUT MANUAL POWER(%) MICROWAVE DUTY APPROX. ON(SEC) OFF(SEC) HIGH 100% MEDIUM-HIGH MEDIUM MEDIUM-LOW DEFROST 2.2. Inverter power supply circuit [NEW H.V.] The Inverter Power Supply circuit powered from the line voltage, 220V 50Hz AC input supplies 4,000V DC to the magnetron tube, and functions in place of the H.V.
  • Page 7: Cautions To Be Observed When / Troubleshooting

    1. The digital programer circuit determines the power level and cooking time to complete cooking and indicates the operating state in the display window. Table shows the corresponding cooking times for respective serving by categories. Inverter Turbo Defrost SELECTED WEIGHT COOKING TIME 1.0 Kg 15 min.40 sec.
  • Page 8 The aluminum heat sink may be HOT due to heat energy, therefore, extreme care should be taken during servicing. H.V. Inverter warning WARNING FOR INVERTER POWER SUPPLY (U) GROUNDING Check the High Voltage Inverter Power Supply circuit grounding. The high voltage inverter power supply circuit board must have a proper chassis ground.
  • Page 9 Discharging the high voltage capacitors WARNING There is high voltage present with high current capabilities in the circuits of the primary and secondary windings, choke coil and heat sinkof the inverter. It is extremely dangerous to work on or near these circuits with the oven energized.
  • Page 10: Disassembly And Parts Replacement / Procedure

    3.5. Avoid inserting nails, wire etc. through any holes in the unit during operation. Never insert a wire, nail or any other metal object through the lamp holes on the cavity or any holes or gaps, because such objects may work as an antennaand cause microwave leakage. 3.6.
  • Page 11 4.1. Magnetron 1. Discharge the high voltage capacitor. 2. Remove 1 screw holding air guide A on the magnetron. 3. Remove 1 screw holding reinforce bracket on the magnetron. 4. Remove 1 screw holding thermistor on the magnetron. 5. Disconnect 2 high voltage lead wires from magnetron filament terminals.
  • Page 12 Be sure to ground any static electric charge built up on your body before handling the DPC. 1. Disconnect all connectors from D.P.C. board. 2. Disconnect 1 grounding terminal from the oven cavity. 3. Disconnect connector CN701 from H.V. inverter. 4.
  • Page 13 4.3. Low voltage transformer and/or power relays (RY1, RY2) NOTE: Be sure to ground any static electric charge built up on your body before handling the DPC. 1. Using solder wick or a desoldering tool and 30W soldering iron carefully remove all solder from the terminal pins of the low voltage transformer and/or power relays.
  • Page 14 4.5. Door assembly 1. Remove door C from door E by carefully pulling outward, starting from upper right hand corner using a flat blade screwdriver. 2. Separate door E from tabs on door A and remove door A. 3. Remove door screen B from door A. 4.
  • Page 15 4.6. Turntable motor 1. Remove the motor cover by breaking off at the 4 spots indicated by arrows with a cutter or the like. NOTE: After removing the motor cover, be sure that cut portions are properly trimmed or bent to the inside so that no sharp edges will be exposed to outside.
  • Page 16 4.7. Quartz heater 1. Disconnect lead wires from heater terminals. 2. Remove 1 screw holding heater supports. 3. Remove the heater by pulling it out. 4.8. H.V. Inverter Power Supply 1. Remove the H.V. lead wire from magnetron terminals. PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 17 2. Disconnect 2 connectors from CN701 & CN702 on H.V. inverter (U). 3. Remove 1 screw holding grounding plate on the base. 4. Remove 1 screw holding inverter bracket on the base. 5. Slide 2 locking tabs of inverter bracket at the bottom of the base in direction of arrows.
  • Page 18: Component Test Procedure

    5. COMPONENT TEST PROCEDURE CAUTION [NEW. H.V.] 1. High voltage is present at the high voltage terminal of the High Voltage Inverter (U) including aluminum heat sink during any cook cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage.
  • Page 19 which were connected to Inverter Power Supply (U). 3. Test the continuity of short switch with door opened and closed positions using lowest scale of the ohm meter. Normal continuity readings should be as follows. Door Opened Door Closed 5.3. Magnetron Continuity checks can only indicate an open filament or a shorted magnetron.
  • Page 20 DANGER HIGH VOLTAGE Test if failure codes of H95, H97 or H98 appear by doing the following procedure. It is recommended to use an AC line input current Ampere meter for testing. Test1 1. Program DPC. A. Tap [Reheat] pad once. B.
  • Page 21: Measurements And Adjustments

    A. After approximately 3 seconds, oven stops. B. During oven operation, input current is approximately 0.4A. INPUT AMPERE FAILURE CODE Unplug CN701 <0.4A Oven stops in 3 seconds after started. If both a and b check OK, the Inverter Power Supply (U) can be determined to be OK. 5.6.
  • Page 22 6.2. Measurement of microwave output The output power of the magnetron can be determined by performing IEC standard test procedures. However, due to the complexity of IEC test procedures, it is recommended to test the magnetron using the simple method outlined below. Necessary Equipment: - 1 liter beaker - Glass thermometer...
  • Page 23: Troubleshooting Guide

    TABLE (1L-1min.test) RATED OUTPUT TEMPERATURE RISE 800W Min.12.6°F(7.0°C) 7. TROUBLESHOOTING GUIDE DANGER HIGH VOLTAGES 1. DO NOT RE-ADJUST PRESET CONTROL on the H.V.Inverter (U). It is very dangerous to repair or without proper test equipment because this circuit handles very large current and high voltage. a misaligned inverter circuit is dangerous.
  • Page 24 SYMPTOM CAUSE CORRECTIONS 1. Oven is dead. Open or loose lead wire harness Check fan motor if thermal is defective. Open thermal cutout Fuse is OK. Open low voltage transformer No display and no operation Defective DPC at all. 2. No display and no operation Shorted lead wire harness Check adjustment of primary, at all.
  • Page 25 SYMPTOM CAUSE CORRECTIONS 5. Timer starts count down but Off-alignment of latch switches Adjust door and latch switches. no microwave oscillation. Open or loose connection of high (No heat while oven lamp voltage circuit especially magnetron and fan motor turn on) filament circuit NOTE: Large contact resistance will cause...
  • Page 26 7.3. Troubleshooting of inverter circuit (U) and magnetron [NEW H.V. This oven is programmed with a self diagnostics failure code system which will help for troubleshooting. H95, H97, H98, and H99 are the provided failure codes to indicate magnetron and inverter circuit problem areas. This section explains failure codes of H95, H97, H98, and H99.
  • Page 27 7.4. Simple way of H.V. Inverter/magnetron troubleshooting Purpose: Simple way (3/23 seconds rule) of identifying whether it’s Magnetron, Inverter, or others. Set-up: The unit under question is connected through the Ammeter as shown below. Procedure: Follow the matrix table below to identify the problem source. Note: Do not replace both Inverter board and Magnetron simultaneously and automatically without going through this procedure.
  • Page 28: Exploded View And Parts List

    Power will: Ammeter reading is: To do: Remedy: Shut off in 23 1. Between 0.5A and 1.0A. Check and repair open Open magnetron wiring seconds after magnetron circuit between Inverter and “Start”. magnetron terminal. 2. Between 1.0A and 2.0A. Check continuity of D702 in Inverter PCB.
  • Page 29: Parts List

    8.2. PARTS LIST NOTE: 1. When ordering replacement part(s), please use part number(s) shown in this part list. Do not use description of the part. 2. Important safety notice: Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacture’s specified parts.
  • Page 30: Door Assembly

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks F01577K10SZP NAME PLATE F10017K10XP BASE F10084T00AP RUBBER FOOT F110D6N60SXP CABINET BODY (U) F200A7K10XP OVEN (U) F20556S10XP COVER F21316E70XP PULLY SHAFT F2177-F80 WASHER F290D6S10XP ROLLER RING (U) F30206S10XP DOOR HOOK F31365Q00AP HOOK LEVER A F400A6S10XP FAN MOTOR...
  • Page 31: Wiring Materials

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks F30186S10XP DOOR KEY A F301A7K10SXP DOOR A F302K6S10XP DOOR E(U) F30216S10XP DOOR KEY SPRING F30856S10XP DOOR C F31455G10XN DOOR SCREEN A F30127K10KXP DOOR HANDLE F30216S10XP HANDLE SPRING 8.4. WIRING MATERIALS PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 32: Escutcheon Base Assembly

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks F030A7K10ZP LEAD WIRE HARNESS F030E7K10ZP H.V. LEAD WIRE F03595G50XN LEAD WIRE (INCLUDING THERMISTOR) F030F7K10XP HARNESS B 8.5. ESCUTCHEON BASE ASSEMBLY PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 33: Packing And Accessories

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks F603L7K10ZP D.P.CIRCUIT (AU) F630Y7K10SZP MEMBRANE SWITCH (U) F80347K10SXP ESCUTCHEON BASE F66175L00AP DISPLAY TUBE COVER F67005U40XN RUBBER CONNECTOR AEDDHJ7K10XP DISPLAY 8.6. PACKING AND ACCESSORIES Ref. No. Part No. Part Name & Description Pcs/Set Remarks F00037K10ZP...
  • Page 34: Digital Programmer Circuit

    Ref. No. Part No. Part Name & Description Pcs/Set Remarks Q701 A691EM300GP IGBT Q702 IGBT C701 ECWF5184N300 FILM CAPACITOR C702 ECQE2505T869 FILM CAPACITOR C703 ECWF2395N632 FILM CAPACITOR DB701 B0FBBS000001 RECTIFIER BRIDGE L701 F5020M300GP CHOKE COIL R702 D0CM352JA002 SAND BAR RESISTOR T701 A609AM300GP TRANSFORMER...
  • Page 35 PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 36 9.2. PARTS LIST PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 37 Ref. No. Part No. Part Name & Description Pcs/Set Remarks BZ210 L0DDEA000014 BUZZER 2.0KHz AECETK1H471B AL CHEM CAPACITOR F/50V AECETS1C220B AL CHEM CAPACITOR F/16V C352 F1H1H101A894 CHIP CAPACITOR 100PF/50V C330 F1H1H102A896 CHIP CAPACITOR 1000PF/50V C222, C228 F1H1H103A897 CHIP CAPACITOR 0.01 F/25V C11, C223, C350, C440 F1H1E104A108...

Table of Contents