Defence Science Journal, Vol. 57, No. 2, March 2007, pp. 267-270 2007, DESIDOC

SHORT COMMUNICATION

Rapid Solvent-free Synthesis of Aromatic Hydrazides under Microwave Irradiation
Asheesh K. Jain, Pradeep K. Gupta, K. Ganesan, Ambuja Pande, and R.C. Malhotra
Defence Research & Development Establishment, Gwalior474 002
ABSTRACT A variety of aromatic hydrazides has been synthesised by solvent-free hydrazinolysis of corresponding esters with hydrazine hydrate under microwave irradiation. Keywords : Aromatic hydrazides, microwave irradiation, solvent-free synthesis, hydrazides
1. INTRODUCTION Over the past few years, there has been growing interest in the synthesis of organic compounds under microwave irradiation because of increasing environmental consciousness. The feasibility of microwave-assisted synthesis has been demonstrated in various transformations like protection and deprotection1, condensation2, cycloaddition3, alkylation4, oxidation5, reduction6, synthesis of various heterocyclic compounds7-9, and in many other chemical reactions. The salient features of these transformations are the enhanced reaction rates, greater selectivity, and the experimental ease of manipulation10 leading to an efficient, environment-friendly and cost-effective pathway to several synthetically useful compounds. Acyl derivatives of hydrazines are called acid hydrazides or hydrazides. These constitute an important class of biologically active organic compounds. The therapeutic uses of hydrazides are welldocumented in the literature. Hydrazides and their condensation products are also reported to possess a wide range of biological activities such as antibacterial activity 11-13 and tuberculostatic properties 14.

Revised 17 March 2005

Some of the hydrazides and corresponding hydrazones are psychopharmacological agent, eg, monoamine oxidase (MAO) inhibitor and serotonine antagonists 15. Hydrazides are commonly prepared by the hydrazinolysis of esters with hydrazine hydrate16. The reaction usually takes place at room temperature but sometimes it is necessary to heat the reaction mixture on steam bath for periods varying from 5 min to several days. In some cases, however, the reaction proceeds with great difficulty after heating for several days or even under pressure in a sealed tube. When the reaction is carried out by heating in a sealed tube, partial decarboxylation may also take place 17. In addition, by the classical method, there is always a possibility for the formation of dihydrazides (RCONHNHCOR) as by-product. 2. EXPERIMENTAL PROCEDURE Methyl or ethyl ester of aromatic carboxylic acid (0.1mol) was dissolved in hydrazine hydrate (99-100 %, 0.1 mol) in a glass tube and was placed in Samsung CK138F domestic microwave oven. After irradiation for a specified period, the solid
DEF SCI J, VOL. 57, NO. 2, MARCH 2007
product was obtained on cooling at room temperature and purified by recrystallisation from ethanol. The compounds were characterised by mixed melting points and IR spectral analysis using Nicolet IMPACT410 FT-IR spectrophotometer. Salicylic acid hydrazide: mp 150-51 C; IR (KBr): 3320 cm -1 , 3269 cm -1 , 2929 cm -1 , 1647 cm-1, 1587 cm-1, 1532 cm-1, 1485 cm-1, 1367 cm -1 , 1239 cm -1 , 963 cm -1 , 761 cm -1 , 1 H NMR (CDCl 3): 1.5 (s, 2H, NH 2), 4.2(s, 1H, OH), 6.97.8 (m, 4H, Ar), 8.0 (s, 1H, CONH); MS: m/z (%) = 152 [M] + (38), 121 [M-31] + (100), 93 [M-59] + (18), 65(12). 3. RESULTS AND DISCUSSION A rapid, single-step and solvent-free microwave approach has been described for the synthesis of a variety of aromatic acid hydrazides:
Table 2. Microwave-assisted solvent-free synthesis of acid hydrazides Hydrazide mp (C) Microwave irradiation Power Reaction Yield (W) time (s) (%)

COONHNH2

110-11

1 COONHNH2 OH 2

150-51

156-68

COONHNH2 HO

265 (d)

99 % NH 2 NH 2 H 2O Ar COOR Ar CONHNH 2 MW
As a classical example, the hydrazinolysis of methyl salicylate, methyl nicotinate, ethyl phthalate, ethyl 3-hydroxynaphthoate were carried out both by conventional method as well as by solvent-free microwave irradiation to establish the importance of the above microwave irradiations over the classical methods. The results are shown in Table 1. High yield and less reaction time of the hydrazides (Table 1) clearly indicate the importance of solventfree microwave method over the conventional method.

Table 1. Hydrazinolysis of aromatic esters Product Microwave Conventional irradiation method* technique (450 W) Time (s) Salicylic acid hydrazide Nicotinic acid hydrazide Phthalic acid hydrazide 3-Hydroxynaphthoic acid hydrazide * In refluxing ethanol Yield Time Yield (%) (h) (%) 40 30

114-16

CONHNH2 OH Cl 6

CONHNH2 N 7

199-200

159-60

O NH NH O 8

> 300

CONHNH2

208-210

Melting points and spectral data of all the compounds were matching with the authentic samples.
JAIN, et al. A RAPID SOLVENT-FREE SYNTHESIS OF AROMATIC HYDRAZIDES
Similar microwave-assisted solvent-free experiments were also carried with a variety of aromatic esters including heterocyclic and naphthyl ester using equimolar mixture of the corresponding ester and hydrazine hydrate in the absence of any solvent, catalyst and solid support. The data presented in Table 2 again shows the efficiency of microwave irradiation method. 4. CONCLUSION Easy experimental procedure and quantitative yield of the products make it a useful synthetic method for the synthesis of hydrazides. ACKNOWLEDGEMENTS Authors sincerely thank Mr K. Sekhar, Director, Defence Research & Development Establishment, Gwalior, for his keen interest and encouragement. We are also thankful to Dr R.P. Semwal and R.C. Meena, Scientists, for recording IR spectra. REFERENCES 1. Beregszaszi, T. & Molnar, A. Commun., Synth. 1997, 27, 3705-709. 2. Villemin, D. & Martin, B. J. Chem. Res., 1994, 146-147. 3. Lu, Y.F. & Fallis, A.G. Can. J. Chem., 1995, 73, 2239-252. 4. Soriente, A.; Spinella, A.; DeRosa, M.; Giordano, M. & Seettri, A. Tetrahedron Letters, 1997, 38, 289-90.
5. Chakraborty, V. & Bordoloi, M. J. Chem. Res., 1999, 2, 118-19. 6. Varma, R.S. & Saini, R.K. Tetrahedron Letters, 1997, 38, 4337-338. 7. Suarez, M.; Loupy, A.; Salfran, E.; Moran, L. & Rolando, E. Heterocycles, 1999, 51, 21-27. 8. Goncalo, P.; Roussel, C.; Melot, J. M. & Vebrel, J. J. Chem. Soc., Perkin Trans., 1999, 2, 2111-115. 9. Danks, T.N. Tetrahedron Letters, 1999, 40, 3957-960. 10. Varma, R.S. Green Chemistry, 1999, 1, 43-55. 11. Bonicke, R. & Kracht, J. Z. Hyg. Infektionskranch, 1954, 139, 140-54. 12. Agarwal, S.K.; Chandra, R.; Gupta, R. & Tutlani, D.R. J. Inst. Chem., 1987, 59(5), 225. 13. Haksar, C.N.; Malhotra, R. C.; Pandya, G. & Sethi, R.K. Lab. J. Sc. Technol. 1971, 9B, 34-36. 14. Binon, F. & Royer, R. J. Chem. Soc., 1953, 1358-64. 15. Zikolova, Sv. Farmatoiya, 1965, 15(4), 185-93. 16. Alvarez, E.F.; Pajares, M.B. & Lopez, O.N. Span, 1966, 324-608. 17. Bruiceb, T.C. & Benkovic, S.J. J. Am. Chem. Soc., 1964, 86, 418. 18. Adams, R. In Organic reactions, Vol III. John Willey & Sons, London, 1949. pp. 366-69.

Contributors Mr Asheesh K. Jain obtained his MSc (Chemistry) from DAVV University, Indore, in 1998. He joined DRDO at the Defence Research & Development Establishment, (DRDE), Gwalior, in 2002 as Junior Research Fellow. His research focus is on synthesis and characterisation of incapacitating agents.
Dr Pradeep K. Gupta obtained his PhD (Organic Chemistry) from the University of Rajasthan, Jaipur. He joined DRDE, Gwalior, in 2003. He is presently working as Scientist B in Synthetic Chemistry Division. His area of work is synthesis and process development of non-lethal incapacitating agents.
Dr K. Ganesan obtained his PhD (Chemistry) from the Jiwaji University, Gwalior. He joined DRDE, Gwalior, in 1989. Presently, he is working as Scientist D in Synthetic Chemistry Division. His areas of work include: Synthesis and decontamination of chemical warfare agents and development of pheromones-based control methods for insect vectors.
Ms Ambuja Pande obtained her MSc (Organic Chemistry) from the Kurukshetra University. Presently, she is working as Senior Research Fellow at the DRDE, Gwalior, and pursuing her PhD. Her present research is focused on irritants involving their synthesis and application aspects.
Dr R.C. Malhotra obtained his PhD (Organic Chemistry) from the Jiwaji University, Gwalior. He joined DRDE in 1969. He worked as Senior Demilitarisation Officer in the Organisation for Prohibition of Chemical Weapons (OPCW), The Hague, Netherlands, for three years. He is presently working as Scientist F and Jt Director and Head, Synthetic Chemistry Division at the DRDE, Gwalior. He has published 40 papers in national/ international journals, and has a number of National and multinational patents to his credit. He got DRDO Scientist of the Year Award (1996) for his outstanding contributions in basic sciences.

MICROWAVE OVEN

CK135M / 138FM

SERVICE

1. Precaution

Manual

CONTENTS

2. Specifications

3. Operating Instructions
4. Disassembly and Reassembly
5. Alignment and Adjustments

GB/F/D/E/I/NL/R

6. Troubleshooting
7. Exploded Views and Parts List

8. PCB Diagrams

9. Schematic Diagrams
PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TOAVOID 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. (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. (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.

Samsung Electronics

Follow these special safety precautions. Although the microwave oven is completely safe during ordinary use, repair work can be extremely hazardous due to possible exposure to microwave radiation, as well as potentially lethal high voltages and currents.

1-1 Safety precautions (

11. To avoid any possible radiation hazard, replace parts in accordance with the wiring diagram. Also, use only the exact replacements for the following parts: Primary and secondary interlock switches, interlock monitor switch. 12. If the fuse is blown by the Interlock Monitor Switch: Replace all of the following at the same time: Primary, door sensing switch and power relay, as well as the Interlock Monitor Switch. The correct adjustment of these switches is described elsewhere in this manual. Make sure that the fuse has the correct rating for the particular model being repaired. 13. Design Alteration Warning: Use exact replacement parts only, i.e., only those that are specified in the drawings and parts lists of this manual. This is especially important for the Interlock switches, described above. Never alter or add to the mechanical or electrical design of the MWO. Any design changes or additions will void the manufacturer's warranty.10.Always unplug the unit's AC power cord from the AC power source before attempting to remove or reinstall any component or assembly. 14. Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its assemblies) unless all solid-state heat sinks are correctly installed. 15. Some semiconductor ("solid state") devices are easily damaged by static electricity. Such components are called Electrostatically Sensitive Devices (ESDs). Examples include integrated circuits and field-effect transistors. Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your body by touching a known earth ground. 16. Always connect a test instrument's ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument's ground lead last. 1-1

1. All repairs should be done in accordance with the procedures described in this manual. This product complies with Federal Performance Standard 21 CFR Subchapter J (DHHS). 2. Microwave emission check should be performed to prior to servicing if the oven is operative. 3. If the oven operates with the door open : Instruct the user not to operate the oven and contact the manufacturer and the center for devices and radiological health immediatly. 4. Notify the Central Service Center if the microwave leakage exceeds 5 mW/cm2 5. Check all grounds. 6. Do not power the MWO from a "2-prong" AC cord. Be sure that all of the built-in protective devices are replaced. Restore any missing protective shields. 7. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including: nonmetallic control knobs and compartment covers. 8. Make sure that there are no cabinet openings through which people--particularly children--might insert objects and contact dangerous voltages. Examples: Lamp hole, ventilation slots. 9. Inform the manufacturer of any oven found to have emmission in excess of 5 mW/cm2, Make repairs to bring the unit into compliance at no cost to owner and try to determine cause. Instruct owner not to use oven until it has been brought into compliance.

CENTRAL SERVICE CENTER

10. Service technicians should remove their watches while repairing an MWO. Samsung Electronics

Pretaution

1-2 Special Servicing Precautions (Continued)
17. When checking the continuity of the witches or transformer, always make sure that the power is OFF, and one of the lead wires is disconnected. 18. Use replacement components that have the same ratings, especially for flame resistance and dielectric strength specifications. A replacement part that does not have the same safety characteristics as the original might create shock, fire or other hazards.
1-3 Special High Voltage Precautions
1. High Voltage Warning Do not attempt to measureany of the high voltages--this includes the filament voltage of the magnetron. High voltage is present during any cook cycle. Before touching any components or wiring, always unplug the oven and discharge the high voltage capacitor (See Figure 1-1) 2. The high-voltage capacitor remains charged about 30 seconds after disconnection. Short the negative terminal of the high-voltage capacitor to to the oven chassis. (Use a screwdriver.) High voltage is maintained within specified limits by close-tolerance, safety-related components and adjustments. If the high voltage exceeds the specified limits, check each of the special components.

H. V. Diode Short H. V. Capacitor
Touch chassis ground first then short to the high voltage capacitor terminal by using screwdriver or jumper wire. Fig. 1-1. Discharging the High Voltage Capacitor PRECAUTION
PRECAUTION There exists HIGH VOLTAGE ELECTRICITY with high current capabilities in the circuits of the HIGH VOLTAGE TRANSFORMER secondary and filament terminals. It is extremely dangerous to work on or near these circuits with the oven energized. DO NOT measure the voltage in the high voltage circuit including filament voltage of magnetron.
Never touch any circuit wiring with your hand nor with uninsulated tool during operation.
PRECAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron.
2-1 Table of Specifications
ITEM TIMER POWER SOURCE POWER CONSUMPTION OUTPUT POWER MODEL CK135M / 138FM 99 MINUTES 230V/50HZ, AC MICROWAVE : 1,500W,GRILL : 1,300W, CONVECTION : 1700W FROM100 TO 900W (6 LEVEL POWER) (IEC-705 TEST PROCEDURE) OPERATING FREQUENCY MAGNETRON COOLING METHOD OUTSIDE DIMENSIONS NET WEIGHT SHIPPING WEIGHT 2,450MHz OM75PH(31) COOLING FAN MOTOR 625(W) x 390(H) x 575(D) 26 Kg 28 Kg

3-1 Control Panel

Display
Auto Defrost Feature Selection
Start / Cooking Time Adjustment Button
Auto Reheat & Cook Feature Selection Language Mode Selection Convection Mode / Temperature Selection

Standing Time Setting

Grill Mode Selection
Microwave / Power Level Mode Selection
Preheat Mode Selection Combined Mode Selection (Microwave + Convection)
Combined Mode Selection (Microwave + Grill)
Turntable ON/OFF Stop / Cancel Button Clock Setting
3-2 Features & External Views
Door Ventilation Holes Light Safety Interlock Holes

1m in+

Control Panel
Guide Roller Glass Plate Door Latches Grill Rack Coupler
231.5 mm 401.5 mm 556 mm 544.5 mm
4-1 Replacement of Magnetron, Motor Assembly and Lamp
Remove the magnetron including the shield case, permanent magnet, choke coils and capacitors (all of which are contained in one assembly). 1. Disconnect all lead wires from the magnetron and lamp. 2. Remove the bracket mounting. 3.Remove the magnetron supporter 4. Remove the air cover. 5. Remove screws securing the magnetron to the wave guide. 6. Take out the magnetron very carefully. 7. Remove screws from the back panel. 8.Remove the assy noise filter. 9. Take out the fan motor. 10. Remove the oven lamp by pulling out from hole of air cover carefully. Magnetron NOTE1: When removing the magnetron, make sure that its antenna does not hit any adjacent parts, or it may be damaged. NOTE2: When replacing the magnetron, be sure to remount the magnetron gasket in the correct position and make sure the gasket is in good condition. Cover Air Lamp Thermo S/W

Fan Motor

H. V. Trans

H. V. Capacitor

4-2 Replacement of High Voltage Transformer
1. Discharge the high voltage capacitor. 2. Disconnect all the leads. 3. Remove the mounting bolts. 4. Reconnect the leads correctly and firmly. PRECAUTION Servicemen should remov their watches whenever working close to or replacing the magnetron.
Disassembly and Reassembly

4-3 Replacement of Fuse

1. Disconnect the oven from the power source. 2. When 15A fuse blows out by the operation of interlock monitor switch failure, replace the primary interlock switch, door sensing switch, monitor switch and power relay. 3. When the above three switches operate properly, check if any other part such as the control circuit board, blower motor or high voltage transformer is defective.
4-4 Replacement of Drive Motor
1. Take out the glass tray and guide roller from the cavity. 2. Turn the oven upside down to replace the drive motor. 3. Remove a screw securing the drive motor cover. 4. Disconnect all the lead wires from the drive motor. 5. Remove screws securing the drive motor to the cavity. 6. Remove the drive motor and coupler. 7. When replacing the drive motor, be sure to remount it in the correct position with the coupler. 8. Connect all the leads to the drive motor. 9. Screw the drive motor cover to the base plate with a screw driver. Drive Motor Cover Base Plate Screw Drive Motor
4-6 Replacement of Control Circuit Board
1. Be sure to disclyarge any static electricity from your body, and avoid touching the "Touch control" clrcuitry. 2. Disconnect the connectors from the control circuit board. 3. Remove screws securing the control circuit bord. 4. Lift up the control circuit board from right side and remove the hooks holding the contol circuit board to the box assembly.

SCREWS

PRECAUTION 1. High voltage is present at the high voltage terminals during any cook cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3. Before touching any oven components or wiring, always unplug the oven from its power source and discharge the high voltage capacitor.
5-1 High Voltage Transformer
1. Remove connectors from the transformer terminals and check continuity. 2. Normal resistance readings are as follows: Secondary Filament Primary (Room temperature = 20C) Primary Terminals 98.6 10% Shows Continuity 1.44 10% Filament Terminals
5-2 Low Voltage Transformer
1. The low voltage transformer is located on the control circuit board. 2. Remove the low voltage transformer from the PCB Ass'y and check continuity. 3. Normal resistor reading is shown in the table. Terminals 1~2(Input) 3~4(Output) 5~6(Output) Resistance 290 4.0 1.0

5-3 Magnetron

1. Continuity checks can indicate only an open filament or a shorted magnetron. To diagnose an open filament or shorted magnetron : 2. Isolate the magnetron from the circuit by disconnecting its leads. 3. A continuity check across the magnetron filament terminals should indicate one ohm or less. 4. A continuity check between each filament terminal and magnetron case should read open. Magnetron Antenna Gasket Plate

Cooling Fins

Alignment and Adjustments
5-4 High Voltage Capacitor
1. Check continuity of the capacitor with the meter set at the highest resistance scale. 2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 9M. 3. A shorted capacitor will show continuous continuity. 4. An open capacitor will show constant 9M. 5. Resistance between each terminal and chassis should read infinite.

5-5 High Voltage Diode

1. Isolate the diode from the circuit by disconnecting its leads. 2. With the ohm-meter set at the highest resistance scale, measure across the diode terminals. Reverse the meter leads and read the resistance. A meter with 6V, 9V or higher voltage batteries should be used to check the front-to back resistance of the diode (otherwise an infinite resistance may be read in both directions). The resistance of a normal diode will be infinite in one direction and several hundred K in the other direction.
5-6 Main Relay and Power Control Relay
1. The relays are located on the PCB Ass'y. Isolate them from the main circuit by disconnecting the leads. 2. Operate the microwave oven with a water load in the oven. Set the power level set to high. 3. Check continuity between terminals of the relays after the start pad is pressed.
5-7 Adjustment of Primary Switch, Door Sensing Switch and Monitor Switch
Precaution For continued protection against radiation hazard, replace parts in accordance with the wiring diagram and be sure to use the correct part number for the following switches: Primary and door sensing switches, and the interlock monitor switch (replace all together). Then follow the adjustment procedures below. After repair and adjustment, be sure to check the continuity of all interlock switches and the interlock monitor switch. 1. When mounting Primary switch and Interlock Monitor switch to Latch Body, consult the figure. 2. No specific adjustment during installation of Primary switch and Monitor switch to the latch body is necessary. 3. When mounting the Latch Body to the oven assembly, adjust the Latch Body by moving it so that the oven door will not have any play in it. Check for play in the door by pulling the door assembly. Make sure that the latch keys move smoothly after adjustment is completed. Completely tighten the screws holding the Latch Body to the oven assembly. 4. Reconnect to Monitor switch and check the continuity of the monitor circuit and all latch switches again by following the components test procedures. 5. Confirm that the gap between the switch housing and the switch actuator is no more than 0.5mm when door is closed. Samsung Electronics Primary Interlock Switch

Interlock Monitor Switch

Lever Switch Body Latch Door Sensing Switch Door Open Primary switch Monitor switch (COM-NC) Door Sensing S/W 0 Door Closed 5-2
5-8 Output Power of Magnetron
CAUTION MICROWAVE RADIATION
PERSONNEL SHOULD NOT ALLOW EXPOSURE TO MICROWAVE RADIATION FROM MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY. The output power of the magnetron can be measured by performing a water temperature rise test. Equipment needed : * Two 1-liter cylindrical borosilicate glass vessel (Outside diameter 190 mm) * One glass thermometer with mercury column NOTE: Check line voltage under load. Low voltage will lower the magnetron output. Make all temperature and time tests with accurate equipment. 1. Fill the one liter glass vessel with water. 2. Stir water in glass vessel with thermometer, and record glass vessel's temperature ("T1", 101C). 3. After moving the water into another glass vessel, place it in the center of the cooking tray. Set the oven to high power and operate for 48seconds exactly. (1.5 seconds included as a holding time of magnetron oscillation:) 4. When heating is finished, stir the water again with the thermometer and measure the temperature ("T2"). 5. Subtract T1 from T2. This will give you the water temperature rise. (T) 6. The output power is obtained by the following formula; 4.187 x 1000 x T+0.55xMcx(T2-T0) 46.5

Output Power =

46.5: Heating Time (sec) 4.187 : Coefficient for Water 1000 : Water (cc) T : Temperature Rise (T2-T1) Mc : Cylindrical borosilicate glass weight To : Room temperature.
7. Normal temperature rise for this model is 9C to 11C at 'HIGH'. NOTE 1: Variations or errors in the test procedure will cause a variance in the temperature rise. Additional power test should be made if temperature rise is marginal. NOTE 2: Output power in watts is computed by multiplying the temperature rise (step 5) by a factor of 90 times the of centigrade temperature.
5-9 Procedure for Measurement of Microwave Energy Leakage
1) Pour 27515cc of 205C(689F) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven. 2) Start to operate the oven and measure the leakage by using a microwave energy survey meter. 3) Set survey meter with dual ranges to 2,450MHz. 4) When measuring the leakage, always use the 2 inch spacer cone with the probe. Hold the probe perpendicular to the cabinet door. Place the spacer cone of the probe on the door and/or cabinet door seam and move along the seam, the door viewing window and the exhaust openings moving the probe in a clockwise direction at a rate of 1 inch/sec. If the leakage testing of the cabinet door seam is taken near a corner of the door, keep the probe perpendicular to the areas making sure that the probe end at the base of the cone does not get closer than 5cm to any metal. If it gets closer than 5cm, erroneous readings may result. 5) Measured leakage must be less than 4mW/cm2, after repair or adjustment.

Maximum allowable leakage is 5mW/cm2. 4mW/cm2 is used to allow for measurement and meter accuracy
5-10 Check for Microwave Leakage
1. Remove the outer panel. 2. Pour 27515cc of 205C(689F) water in a beaker which is graduated to 600cc, and place the beaker in the center of the oven. 3. Start the oven at the highest power level. 4. Set survey meter dual ranges to 2,450MHz. 5. Using the survey meter and spacer cone as described above, measure arnear the opening of magnetron, the surface of the air guide and the surface of the wave guide as shown in the following photo.( but avoid the high voltage components.) The neading should be less than 4mW/cm2.

WARNING

AVOID THE HIGH VOLTAGE COMPONENTS.

5-11 Note on Measurement

1) Do not exceed the limited scale. 2) The test probe must be held on the grip of the handle, otherwise a false reading may result when the operator's hand is between the handle and the probe. 3) When high leakage is suspected, do not move the probe horizontally along the oven surface; this may cause damage to the probe. 4) Follow the recommendation of the manufacturer of the microwave energy survey meter.
5-12 Leakage Measuring Procedure
5-12-1 Record keeping and notification after measurement 1) After adjustment and repair of a radiarion preventing device, make a repair record for the measured values, and keep the data. 2) If the radiation leakage is more than 4 mW/cm2 after determining that all parts are in good condition, functioning properly and the identical parts are replaced as listed in this manual notift that fact to ;
5-12-2 At least once a year have the microwave energy survey meter checked for accuracy by its manufacturer. Samsung Electronics 5-4

PRECAUTION

1. CHECK GROUNDING BEFORE CHECKING FOR TROUBLE. 2. BE CAREFUL OF THE HIGH VOLTAGE CIRCUIT. 3. DISCHARGE THE HIGH VOLTAGE CAPACITOR. 4. WHEN CHECKING THE CONTINUITY OF THE SWITCHES OR TRANSFORMER, DISCONNECT ONE LEAD WIRE FROM THESE PARTS AND THEN CHECK CONTINUITY WITHOUT THE POWER SOURCE ON. TO DO OTHERWISE MAY RESULT IN A FALSE READING OR DAMAGE TO YOUR METER. 5. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT. ALWAYS TOUCH GROUND WHILE WORKING ON IT TO DISCHARGE ANY STATIC CHARGE BUILT UP.

6-1 Electrical Malfunction
SYMPTOM Oven is dead. Fuse is OK. No display and no operation at all. No display and no operation at all. Fuse is blown. CAUSE 1. Open or loose lead wire harness 2. Open thermal cutout (Magnetron) 3. Open low voltage transformer 4. Defective Ass'y PCB 1. Shorted lead wire harness 2. Defective primary latch switch (NOTE 1) 3. Defective monitor switch (NOTE1) 4. Shorted HVCapacitor 5. Shorted HVTransformer (NOTE2) CORRECTIONS Check fan motor when thermal cutout is defective. Check Ass'y PCB when LVT is defective. Check adjustment of primary, interlock monitor, power relay, door sensing switch.
NOTE 1: All of these switches must be replaced at the same time. (refer to adjustment instructions) Check continuity of power relay contacts and if it has continuity, replace power relay also. NOTE 2: When HVTransformer is replaced, check diode and magnetron also. Oven does not accept key input (Program) 1. Key input is not in-Sequence 2. Open or loose connection of membrane key pad to Ass'y PCB 3. Shorted or open membrane panel 4. Defective Ass'y PCB 1. Off-alignment of latch switches 2. Open or loose connection of high voltage circuit especially magnetron filament circuit NOTE: Large contact resistance will bring lower magnetron filament voltage and cause magnetron to lower output and/or intermittent oscillation. 3. Defective high voltage components H.V.Transformer H.V.Capacitor H.V.Diode,H.V.Fuse Magnetron 4. Open or loose wiring of power relay 5. Defective primary latch switch 6. Defective power relay or Ass'y PCB Refer to operation procedure.
Replace PCB main. Adjust door and latch switches.
Timer starts countdown but no microwave oscillation. (No heat while oven lamp and fan motor turn on.)
Check high voltage component according to component test procedure and replace if it is defective.

Replace PCB main.

Troubleshooting
6-2 Electrical Malfunction(continued)
SYMPTOM Oven lamp and fan motor turn on CAUSE 1. Misadjustment or loose wiring of primary latch switch 2. Defective primary latch switch 1. Open or loose wiring of secondary interlock switch 2. Off-alignment of primary interlock 3. Defective secondary interlock S/W 1. Decrease in power source voltage. 2. Open or loose wiring of magnetron filament circuit. (Intermittent oscillation)) 3. Aging of magnetron Loose wiring of door sensing switch Defective Ass'y PCB CORRECTIONS Adjust door and latch switches.
Oven can program but timer does not start.
Adjust door and interlock switches.

Microwave output is low;. Oven takes longer time to cook food.

Consult electrician.

Fan motor turns on when plugged in Oven does not operate and return to the plugged in mode. Loud buzzing noise can be heard.
Check wire of door sensing switch. Replace PCB main.
1. Loose fan and fan motor 2. Loose screws on H.V.Transformer 3. Shorted H.V.Diode 1. Open or loose wiring of turntable motor. 2. Defective turntable motor. 1. Open or loose wiring of primary interlock switch 2. Operation of thermal cutout(Magnetron) 1. Metallic ware or cooking dishes touching on the oven wall. 2. Ceramic ware trimmed with gold or silver powder also causes sparks. Uneven intensity of microwave due to its characteristics.
Tighten screws of fan motor. Tighten screws of H.V.Transformer. Replace H.V.Diode. Check the wire of turntable motor Replace turntable motor. Adjust door and latch switches.
Turntable motor does not rotate.
Oven stops operation during cooking

Sparks

Inform the customer. Do not use any type of cookware with metallic trimming. Wrap thinner parts of the food with aluminum foil. Use plastic wrap or cover with a lid. Stir once or twice while cooking foods such as soup, cocoa, or milk. Replace turntable motor.

Uneven cooking

Noise from the turntable motor when it starts to operate.
Noise may result from the motor.

7-1 Exploded Views

MM52 MM67 MM582

MM73 MM01

MM62 MM66 MM63 MM61 MM68 MM69 MM72 MM17 MM65 MM53 MM60 MM57 MM21 MM55 MM05 MM03 MM07 MM59
MM06 MM71 MM17 MC01 MM581 MM25 MM10 MM16 MM56 MM28 MM18 MM19 MM20 MM103 (CK138FM) MM27 MM30 MM31 MM32 MM33 MM93 MM100 (CK138FM) MM106 (CK138FM) MM22 MM88 MM14 MM29 MB04 MM642 MM102 MB05

NC NO COM

MB03 MB02 MM09 MM641

MM105 (CK138FM)

MM104 (CK138FM)
Exploded Views and Parts List

7-2 Main Parts List

CK135M/138FM/XEF No. MB01 MB02 MB03 MB04 MB05 MM01 MM03 MM031 MM05 MM06 MM07 MM08 MM09 MM10 MM102 MM14 MM16 MM17 MM18 MM19 MM20 MM21 MM22 MM25 MM27 MM28 MM29 MM30 MM31 MM32 MM33 MM35 MM49 MM52 MM53 MM56 MM57 MM581 MM582 MM59 MM60 MM61 MM62 MM63 MM641 MM642 MM642 MM65 MM66 MM67 MM68 MM69 Code No. DE93-20020D 3405-000175 3405-000178 DE66-90054B DE66-40021B DE70-30002Z DE39-00173A DE39-00174A DE96-00011C DE31-00001D DE39-00022B OM75P(31)ERH DE71-00062A 4713-001046 DE63-00023A DE26-00008A DE71-60461A DE47-20009A DE74-20002A DE92-90189B DE67-60082A DE39-40409A DE31-10170A DE65-20014A DE61-40065A DE80-10002G 2501-001019 DE61-50106A DE59-40001A DE91-70061A DE26-20152A DE32-10013A DE71-00098A DE63-90035I DE64-00131A DE62-00009A DE61-50027B DE71-00066A DE71-00067A DE71-60386A DE63-20017A DE47-70031G DE61-70060A DE61-30006A DE97-00136D DE97-00136B DE97-00136C DE72-60035R DE61-50570B DE61-00068A DE60-40009B DE61-50021A Description ASSY BODY LATCH SWITCH-MICRO SWITCH-MICRO LEVER-SWITCH LATCH-BODY PANEL-OUTER WIRE HARNESS-A WIRE HARNESS-B ASSY NOISE FILTER MOTOR-FAN ASSY POWER CORD ASSY-MAGNETRON:OM75P COVER-AIR LAMP-INCANDESCENT CUSHION-HVT TRANS-H.V COVER-CEILING THERMOSTAT TRAY-COOKING ASSY-GUIDE ROLLER COUPLER WIRE HARNESS-E MOTOR-SYNCHRONOUS CABLE CLAMP FOOT BASE-PLATE C-OIL BRACKET-HVC DIODE-H.V ASSY-H.V.FUSE TRANS-L.V SENSOR-THERMISTOR COVER-LAMP CUSHION-RUBBER FILM-LAMP ADIABATIC-RIGHT BRACKET-HEATER COVER-ADIABATIC-R COVER-ADIABATIC-L COVER-BACK GASKET-HEATER HEATER-GRILL SPRING-PLATE SUPPORTER-HEATER ASSY-WIRE RACK ASSY-WIRE RACK ASSY-WIRE RACK GUIDE-AIR BRACKET-AIR GUIDE BRACKET-UPPER WASHER-TEFLON BRACKET-FLANGE Specification Q'ty Remark M959/XSA,-,-,-,1 250V,15A,200gf,SPST-NO 1 250V,15A,200gf,SPST-NO 2 NYLON#66(2021SW),40G,M959/XSA, 1 NYLON#66(2021SW),40g,M959/XSA, 1 SECC,T0.6,W424.7,L1115,BROWN,CK135M,1 230V50Hz,CK135,-,-,-,-,-,-,-,-,-,-,1 230V50Hz,CK135,-,-,-,-,-,-,-,-,-,-,1 SN-135EA,230V10A,CK135K CONVECTION,- 1 -,SMF-2D3EA,230V50Hz,-,M1D33CE/XSA.RAD,-,2320rpm 1 4819D,CK135,230V50Hz,-,-,-,-,NYLON#66,-,-,-,-,CK135T,1.3-CONV 1 240V,104mA,25W,ORG,-,-,25x62mm 1 -,EPDM,T25.5,W30,L50,-,CK135,HSSHV-293EC,230V50HZ,2230V/3.15V,-,DY 1 MICA,T0.3,W114.2,L117.5,-,3RD1 PW2N-520PB,160/60,250V/7.5A,H, 2 GLASS,T6,PI360,1.2CUFT,NEG,-,1 D16.5,STD,-,-,-,1 PPS,T5.3XL24.1,-,BRN,3RD-W(1.3),MW7896W,- 1 230V50HZ,M9G45,CTW,-,-,1 M2LJ24Z702,ST-16F,220/240V,2.DA-6N,NY-66,-,-,-,-,-,1 P-CORD PP,BLK,T2x22x17mm,-,-,4 SGCC,T0.8,W404,L633,CK135,1 1.10uF,2100V,BK,35X54X90,20mm 1 SECC,T0.8,W31,L125.8,-,-,1 HVR-1X-32B-12,-,-,-,-,1 THV060T-0800-H,5KV/0.80A,WHT 1 SLV-105E,230V,50HZ,AC17V/3V,-, 1 PT-312-K2,-,-,-,-,-,1 ACRYL,-,-,-,CLEAR,CK135T,1 DFA20,T1.5,W190,L100,BLK,JEOUTER-P PET,W74xL105,T0.11,CK135,1 T3.0,W173.5,L247,CK135,SUPER FINE INSULATIO,- 1 SECC,T1.0,W51,L55,CE945GF,-,1 SECC,T0.6,-,-,-,CK135T,1.3-CONV 1 SECC,T0.6,-,-,-,CK135T,1.3-CONV 1 SCP3,T0.6,W275,L385.5,BLK-COAT 1 BRASS,T1.5,OD30.5,ID22.5,-,-,1 D6.6,230V1280W,M9G45,SJH,-,-,1 SK-5,T0.5,-,-,-,-,1 ALUMINA,5G,2ND-W/P,-,-,-,1 CK135,HIGH-RACK,-,1 CK95,LOW-RACK,-,-,-,1 CK135M CK99FS,LOW-RACK,-,-,-,1 CK138FM SECC,T0.5,-,-,-,CK135,1 SECC T0.8,CK95,1 SECC,T0.6,-,-,-,CK135T,1 SLOT,ID22.2,OD28,T1.2,TEFLON,1 SECC1,T0.8,32,32,-,-,1 -

CK135M/138FM/XEF No. MM71 MM72 MM88 MM91 MM93 MM100 MM103 MM104 MM105 MM106 Code No. DE61-50490A DE61-50347A DE73-90027A DE74-20025C DE60-60025A DE92-90534A DE67-60074A DE72-80062A DE74-40001A DE74-20022A Description BRACKET-TCO BRACKET-EARTH FERRITE-CORE TRAY-CONVENTION PIN-FOOT ASSY-TRAY BROILER COUPLER-BARBECUE SHAFT-BARBECUE SPIT-BARBECUE TRAY-OIL Specification SECC1,T0.6,34,58,-,-,BSS2-A,T1.0,W35,L43,MBGF45,-,NI-ZN,T13.8,W21.0,L28.0,BNF-14 SPP,TO.8,W12,L325.9.CE104CF,-,-,PP-JI350,BLK,-,-,-,-,-,CE118KF,TEFLON-COATING-,-,-,-,PTFE,29G,WHT,CE104CF,-,-,-,-,STS304,D3,L149,W60.25,CE97,-,-,-,-,MSWR,CE945G,SNC2,-,-,-,-,-,GLASS(NEOREX),T5,P1210,600G,-,-,-,-,-,Q'ty Remark CK138FM CK138FM CK138FM CK138FM CK138FM

7-3 Door Parts List

MD08 MD04 MD06 MD17 MD02 MD09
MD07 MD10 CUSHON DOOR TAPE-DOUBLE FACE MD15 MD01
CK135M/138FM/XEF No. MD01 MD02 MD04 MD06 MD07 MD08 MD09 MD10 MD15 MD17 Code No. DE94-00298C DE64-00084C DE94-00300A DE64-00087A DE61-70148A DE61-80002A DE61-80003A DE64-40264B DE64-00085C DE67-00061B Description ASSY DOOR DOOR-A ASSY DOOR-E DOOR-C SPRING-KEY HINGE-UPPER HINGE-LOWER DOOR-KEY DECORATION-DOOR SCREEN-DOOR(B) Specification CK135M,BROWN,CK135M,PC(TRIREX),-,-,-,-,CK135T,BLK,SEALING PBT,-,-,-,1.3-CONV,CK135T,-,-,BLK HSWR3,PI6.0,D0.8,L34.4,BLUING, SCP1,T2.3,26,77,ZPC3,WHT,CE945 SCP1,T2.3,26,77,ZPC3,WHT,CE945 NYLON#66(2021SW),40G,-,M959/XS CK135M,PC,-,-,BROWN,CK138F/XEF,GLASS,-,W260.5,L422.5,-,Q'ty Remark -

7-4 Control Parts List

MC03 MC06 MC28 MC10

MC01 MC27 MC33 MC13

CK135M/138FM/XEF No. MC01 MC01 MC03 MC03 MC06 MC07 MC10 MC13 MC13 MC15 MC27 MC28 MC32 MC33 Code No. DE94-00299E DE94-00299F DE72-00078E DE72-00078F DE67-00045A RC-135T-00 DE64-00123C DE94-00318F DE94-00318G DE67-00060C DE67-00055C DE67-00047C DE97-00137C DE97-00139C Description ASSY CONTROL-BOX ASSY CONTROL-BOX CONTROL-PANEL CONTROL-PANEL WINDOW-DISPLAY ASSY PCB PARTS:CK135 KNOB-COVER ASSY CONTROL-PANEL ASSY CONTROL-PANEL BUTTON-START BUTTON-CANCEL BUTTON-DEFROST ASSY-BUTTON SELECT ASSY-BUTTON CLOCK Specification -,CK135M,BROWN,-,CK138M,BROWN,PC,CK135M,-,-,-,-,BROWN,PC,CK138M,-,-,-,-,BROWN,SAN,T2,W69.6,-,SMOG,CK135T,CK135M,-,-,BROWN,-,-,-,-,CK135M,BROWN,-,CK138M,BROWN,-,-,BROWN,CK135M,-,PC,-,BROWN,CK135M,-,PC,-,BROWN,CK135M,-,CK135M,BROWN,-,CK135M,BROWN,-,Q'ty Remark CK135M CK138FM CK135M CK138FM CK135M CK138FM -

7-5 Casing Parts List

MM80 MM17 MM76

MM78 MM57 MM75 MM83

MM751 MM77 MM82 MM100
CK135M/138FM/XEF No. MM73 MM74 MM75 MM751 MM76 MM77 MM78 MM81 MM82 MM83 MM88 MM93 MM100 MM17 MM57 Code No. DE92-90478K DE31-10171A DE31-90019A DE31-90020A DE47-70077A DE60-30016B DE60-40026A DE62-00008A DE72-30016B DE92-90487A DE73-90027A DE60-60025A DE60-40014B DE47-20009A DE61-50490A Description ASSY-CASING MOTOR-CONVECTION BLADE-FAN BLADE-FAN HEATER-CONVECTION NUT-FLANGE WASHER-PLAIN ADIABATIC-CASING BUSH-MOTOR ASSY-COVER CASING FERRITE-CORE PIN-FOOT WASHER-C MOTOR THERMOSTAT BRACKET-TCO Specification Q'ty CK135T,COVER-CASING,-,-,-,1 SMC-105EA,230V/50HZ,2800RPM,-, 1 SECC,T0.6,-,-,-,-,1 ALSTAR,T0.6,W250,L250,-,-,1 230V,1680W,30.7,7,-,-,-,-,1 M4,MSWR10,FEFN,-,-,-,-,-,3 ID5.5,OD12,T1.0,SBC1,-,-,-,-,1 T3.0,W241,L336.8,CK135,SUPER FINE INSULATIO,-1 MSWR3,D5.6,L15.7,CE115K,ZP3,-, 1 CE115K,230V50HZ,-,-,-,1 NI-ZN,T13.8,W21.0,L28.0,BNF-PP-JI350,BLK,-,-,-,-,-,4 M16,T1.0,SECC,ZNC3,-,-,-,-,1 PW2N-520PB,160/60,250V/7.5A,H, 1 SECC1,TO.6,34,Remark -

7-6 Standard Parts List

CK135M/138FM/XEF Code No. DE60-30016A DE60-10012A DE60-10012A DE60-10012A DE60-10018A DE60-10034A DE60-10045A DE60-10080B DE60-10080B DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10082H DE60-10098A DE60-10122A DE60-10122A DE60-20063A DE60-20063A DE60-10045A DE60-10061A DE60-10122A DE60-10045A DE60-10122A DE60-10088A DE60-10082H DE60-10098A DE60-10012A Description NUT-FLANGE SCREW-TAP TITE SCREW-TAP TITE SCREW-TAP TITE SCREW-ASSY MACHINE SCREW-TH SCREW-TAP PH SCREW-WASHER SCREW-WASHER SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-A SCREW-ASSY TAP TITE SCREW-TAP TH SCREW-TAP TH BOLT-FLANGE BOLT-FLANGE SCREW-TAP PH SCREW-TAP TH SCREW-TAP TH SCREW-TAP PH SCREW-TAP TH SCREW-TAP PH SCREW-A SCREW-ASSY TAP TITE SCREW-TAP TITE Specification M4,MSWR10,-,-,-,-,-,-,TH,+,3,M4,L10,SWR10,ZPC2,TOOTH TH,+,3,M4,L10,SWR10,ZPC2,TOOTH TH,+,3,M4,L10,SWR10,ZPC2,TOOTH PH,M4X0.7P,8,MSWR10,SN1,WS,-,TH,+,M4,L10,STS304,-,-,-,-,PH,M3,L6,FEFZY,-,-,-,-,-,PH,PI5,L10,SWRCH18A,ZP2,2S,-,PH,PI5,L10,SWRCH18A,ZP2,2S,-,2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, 2S-4X12,TOOTHED,-,-,-,-,-,-,-, PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W TAP,TH,2-4X8,FE,FN,-,-,-,-,TAP,TH,2-4X8,FE,FN,-,-,-,-,M4,10,ZPC3,YEL,MSWR,-,-,-,M4,10,ZPC3,YEL,MSWR,-,-,-,PH,M3,L6,FEFZY,-,-,-,-,-,TH,M4,L8,STS,-,-,-,-,-,TAP,TH,2-4X8,FE,FN,-,-,-,-,PH,M3,L6,FEFZY,-,-,-,-,-,TAP,TH,2-4X8,FE,FN,-,-,-,-,PH,M3,L8,FEFZY,PLAIN,-,-,-,-,2S-4X12,TOOTHED,-,-,-,-,-,-,-, PH,TC,M4X8,SWRCH18A,ZPC2,GLD,W TH,+,3,M4,L10,SWR10,ZPC2,TOOTH Q'ty Remark SENSOR N-F-EA P-C-EA S-M-EA B/EATH SENSOR MG-TCO MGT TNS-HV B-PLTE BKT/AIR BKT/UP C/AIR C/BLOW C/CASING CN-BOX CO-A/RIG CV/BACK GRILL/TCO GUIDE-AI LATCH PN-OUT M/DRIV BKT/HEA C-CEIL HI-LOW HI-UPP B/MORT SUPP-HEA CV-CAS ASSY-PCB LVT HVD -

8. P.C.B Diagrams

8-1 P.C.B Diagrams

P.C.B Diagrams

8-2 P.C.B Parts List
CK135M/138FM/XEF Code No. 3501-001062 3501-001068 3501-001155 3601-001126 DE07-10096A DE09-00108A DE30-20016A DE34-00063A DE47-40024A DE61-90048D DE92-00469A 0401-001083 0402-001103 0403-001288 0501-000465 0504-000130 0504-000159 0601-001467 1202-000141 1404-001194 2001-001102 2001-003132 2007-000277 2007-000300 2007-000468 2007-000572 2007-000671 2007-000868 2007-000931 2007-000941 2203-000260 2203-000444 2203-000555 2203-001608 2401-000244 2401-000466 2401-000598 2401-000911 2401-002075 2401-002438 2401-002598 2801-003933 3404-001129 3711-000999 3711-001038 3711-004142 3711-004143 DE39-60001A DE41-00131A Description RELAY-POWER RELAY-POWER RELAY-MINIATURE FUSE-CARTRIDGE V.F.DISPLAY IC MICOM BUZZER SWITCH-PRESSURE HOLDER-FUSE HOLDER-DIGITRON ASSY PCB AUTO DIODE-SWITCHING DIODE-RECTIFIER DIODE-ZENER TR-SMALL SIGNAL TR-DIGITAL TR-DIGITAL LED IC-VOLTAGE COMP. THERMISTOR-PTC R-CARBON(S) R-CARBON(S) R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP C-CERAMIC,CHIP C-CERAMIC,CHIP C-CERAMIC,CHIP C-CERAMIC,CHIP C-AL C-AL C-AL C-AL C-AL C-AL C-AL CRYSTAL-UNIT SWITCH-TACT CONNECTOR-HEADER CONNECTOR-HEADER CONNECTOR-HEADER CONNECTOR-HEADER WIRE-SO COPPER P.C.B-MAIN Specification 24VDC,523.2mW,16A,1FormA,15mS, 24Vdc,523mW,16A,1FormA,15mS,10 24VDC,200MW,3000MA,1FORMA,10MS,10MS 250V,1.6A,FAST-ACTING,CERAMIC,5x20mm SVM-07MM09,GRN/ORG,7DIG,112seg TMP87PM14F,OTP-32K,QFP,8BIT-64PIN,-,-,-,CBE2220BA,STICK,-,-,-,-,-,-,DAIL,28VDC,10mA,24,-,JES1424GS FH-51H,7.5A,-,-,-,-,NYLON#66,10G,BLK,-,-,-,-,-,230V50Hz,VFD,RC-135T-00,CK135T MM4148,100V,150MA,LL-34,TP 1T4,400V,1A,TS-1,TP ZMM55C5V1,4.8-5.4V,500MW,LL-34,TP MMBT3904,NPN,225mW,SOT-23,TP,3 KSR1105TF,NPN,200MW,4.7K/10K,SOT-23,TP KSR2105,PNP,200MW,4.7K/10K,SOT-23,TP CHIP,RED,1.4x1.25mm,640nm 7033,SOT-89,3P,-,SINGLE,0V,-,P 39ohm,20%,220/240V,270Vac,1.2A,-,TP 200OHM,5%,1/2W,AA,TP,2.4X6.4MM 620ohm,5%,1/2W,AA,TP(26mm),2.4 100KOHM,1%,1/10W,DA,TP,2012 10KOHM,5%,1/10W,DA,TP,2012 1KOHM,5%,1/10W,DA,TP,2012 220OHM,5%,1/10W,DA,TP,2012 2KOHM,5%,1/10W,DA,TP,2012 4.7KOHM,1%,1/10W,DA,TP,2012 470OHM,5%,1/10W,DA,TP,2012 47KOHM,5%,1/10W,DA,TP,2012 10nF,10%,50V,X7R,TP,2012 1nF,10%,50V,X7R,TP,2012,0.02nF,5%,50V,NP0,TP,2012 22nF,+80-20%,50V,Y5V,TP,2012 100uF,20%,10V,GP,TP,6.3x7,5 10uF,20%,35V,GP,TP,5x7,5 1uF,20%,50V,GP,TP,4x7,5 22uF,20%,16V,GP,TP,5x7,5 4.7uF,20%,50V,GP,TP,5x11,5 47uF,20%,50V,WT,TP,6.3x11,5 220uF,20%,50V,GP,TP,10x16,5 8MHz,50ppm,28-AAA,12pF,70ohm,TP 12VDC,50mA,160gf,6.6x6.6x7mm,BOX,5P,1R,2.5mm,STRAIGHT,SN BOX,6P,1R,2.5mm,STRAIGHT,SN BOX,3P/5P,1R,5mm/2.5mm,STRAIGH BOX,2P/3P,1R,5mm/2.5mm,STRAIGH PI0.6,SN,T,52MM,TAPING_WIRE,-, RC-135T-**,FR-1,-,-,-,T1.6*90*262,-,-,-,Q'ty 1 Remark RY06 RY07,08 RY01~05 FUSE1 VFD1 IC01 BUZ1 ECD1 FUSE1 D04~06,08~22 D01,02,03,07 ZD01,02,03 TR07 TR01~03,05,06,08~13 TR04 LD01,02 IC02 PTC1 R03,04,05 R22,23 R33 R08~10,12,13,16,17,21 R06,07,15,18,19,31,35 R11 R14 R32 R01,02,20 R24~30 C12,13 C18,19,20 C08,09 C04,05,07,10,16 C03 C11 C17 C06,15 C14 C02 C01 XTL1 SW01~14 CN03 CN04 CN01 CN02 J04~10,12~49 -

9-1 Schematic Diagrams

MAGNETRON
HIGH VOLTAGE DIODE FA F HIGH VOLTAGE CAPACITOR TO CHASSIS

RED RED

RED BLU BRN RED

H.V.FUSE

SYMBOL COLOR BRN BROWN BLK BLACK RED RED BLU BLUE

HIGH VOLTAGE TRANSFORMER

ELECTRONICS
Samsung Electronics Co., Ltd. Aug 2000 Printed in Korea Code No. : DE68-01379A