Pmor30b pmor30r pmor30s in the interest of user-safety the oven should be restored to its original condition and only parts identical to those specified should be used. Warning to service personnel: microwave ovens contain circuitry capable of producing very high voltage and current. Contact with th...
Pmor30b pmor30r pmor30s 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 magne...
1 pmor30b pmor30r pmor30s warning to service personnel microwave ovens contain circuitry capable of pro- ducing very high voltage and current, contact with following parts may result in a severe, possibly fatal, electrical shock. (example) inverter unit that includes high voltage capacitor, high vol...
2 pmor30b pmor30r pmor30s microwave measurement procedure a. Requirements: 1) microwave leakage limit (power density limit): the power density of microwave radiation emitted by a microwave oven should not exceed 1mw/cm 2 at any point 5cm or more from the external surface of the oven, measured prior ...
3 pmor30b pmor30r pmor30s service manual over the range microwave oven pmor30b / pmor30r / pmor30s foreword this manual has been prepared to provide dacor service personnel with operation and service information for the dacor over the range microwave oven, pmor30b, pmor30r and pmor30s. It is recomme...
4 pmor30b pmor30r pmor30s item description power requirements 120 volts / 14 amperes / 1600 w 60 hertz single phase, 3 wire grounded power output 1100 watts (iec test procedure) operating frequency of 2450mhz case dimensions width 29-15/16" height 16-3/8" depth 16- 1/8" (not including the door handl...
5 pmor30b pmor30r pmor30s electrical requirements the oven is equipped with a 3-prong grounding plug. Do not under any circumstances cut or remove the grounding pin from the plug. The power supply cord and plug must be connected to a separate 120 volt ac, 60 hz, 15 amp. Or more dedicated line, using...
6 pmor30b pmor30r pmor30s operation description of operating sequence control panel the following is a description of component functions during oven operation. Off condition closing the door activates the stop switch, primary interlock switch and secondary interlock switch. (in this condition, the ...
7 pmor30b pmor30r pmor30s 1. The contacts of relays are closed and components connected to the relays are turned on as follows. (for details, refer to figure o-2) relay connected components ry1 oven lamp / fan motor / stirrer motor ry2 turntable motor ry3, ry4 hood fan motor 2. 120 volts a.C. Is sup...
8 pmor30b pmor30r pmor30s 2. Horizontal venting the air handing is the same as vertical venting except that the final air discharge is directed horizontally out from the top rear of the oven into the customer's vent system. : air flow 3. Sensor detects moisture and humidity and calculates cooking ti...
9 pmor30b pmor30r pmor30s wave-form of main parts are shown in figure a-2. During off-time, flyback voltage appears on the primary winding of the high voltage transformer. The off-time de- pends on the inductance of the transformer and capaci- tance of the resonant capacitor c3. Synchronous circuit ...
10 pmor30b pmor30r pmor30s schematic note: condition of oven 1. Door closed 2. Cooking time programmed 3. Variable cooking control "high" 4. "start" pad touched figure o-2. Oven schematic-cooking condition figure o-1. Oven schematic-off condition schematic note: condition of oven 1. Door closed 2. C...
11 pmor30b pmor30r pmor30s figure o-3. Inverter unit circuit m ac3 pwm mck vs mck (cn-a) vs (cn-a) cn-a osc osc en int pa gnd q50 agnd vp0 vcc out vs vp2 4.7k 39k vp1 ia 1 1 1 9 10 18 2 2 3 3 4 magnetron t1 p1 p2 h2 s2 m2 m1 q70 vc vc s1 h1 d11 d16 d50 d12 0.3 µ / 580v c3 0.03 µ 2800v c11 0.06 µ 310...
12 pmor30b pmor30r pmor30s figure o-4. Printed wiring board for inverter unit circuit 3 fa930dr r42 e c g e e m e eb e + + r43 j6 m1 m2 zd40 c41 j3 q3 q2 q4 c51 r56 r71 q70 r71 c70 cn-a q51 c4 r34 r25 r6 ic1 1 3 r5 th2 ct1 ac3 r20 d22 d23 d20 d21 zd31 j1 c31 cf1 vr1 vrs2 l2 blue red r44 r40 c35 r31 ...
13 pmor30b pmor30r pmor30s description and function of components door open mechanism the door is opened by pulling the door handle, refer to the figure d-1. Lock switch and monitor switch for proper operation. (refer to chap- ter "test procedure"). Note: monitor fuse and switch are replaced as an a...
14 pmor30b pmor30r pmor30s stirrer motor the stirrer motor drives the stirrer fan to stir the microwave radiation from the waveguide. Hood lamp the hood lamps are mounted at the hood lamp angle on the base cover. The hood lamps can be turned off and on by touching the light options pad. And also the...
15 pmor30b pmor30r pmor30s ck = check / re = replace possible case and defective parts problem test procedure condition off condition idle condition microwave cooking condition sensor cooking condition home fuse blows when power cord is plugged into wall receptacle. Monitor fuse blows when power cor...
16 pmor30b pmor30r pmor30s b inverter unit test test procedures procedure letter component test 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. To test for an open filament, isolate t...
17 pmor30b pmor30r pmor30s chart for checking the defective inverter unit no power at full power output cooking varistor vrs2 or/and foil pattern open on the inverter unit . High voltage diode d11 and d12 are defective. Magnetron is defective. H. V. Transformer is defective. Exchange the inverter un...
18 pmor30b pmor30r pmor30s test procedures procedure letter component test description of main parts symbol part name function c11, c12 high voltage capacitor high voltage capacitor for doubler circuit. C2 film capacitor to smooth line ripple c3 film capacitor capacitor for resonant ct1 current tran...
19 pmor30b pmor30r pmor30s test procedures procedure letter component test 4. Transistor q2 and q3 check the resistance of transistor q2 and q3 by using ohmmeter as shown in fig- ure b-5. The resistance between b and e of tran- sistor q2 and q3 is approx. 20ý the resistance between c and e is over r...
20 pmor30b pmor30r pmor30s test procedures procedure letter component test d primary interlock switch and secondary interlock switch test 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. ...
21 pmor30b pmor30r pmor30s test procedures procedure letter component test h hood thermal cut-out test 1. Disconnect the power supply cord, and then remove outer case. 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. A continuity check across the th...
22 pmor30b pmor30r pmor30s test procedures procedure letter component test j touch control panel assembly test the touch control panel consists of circuits including semiconductors such as lsi, ics, etc. Therefore, unlike conventional microwave ovens, proper maintenance cannot be performed with only...
23 pmor30b pmor30r pmor30s test procedures procedure letter component test 1) disconnect the power supply cord, and then remove outer case. 2) open the door and block it open. 3) to discharge high voltage capacitor, wait for 60 seconds. 4) reconnect all leads removed from components during testing. ...
24 pmor30b pmor30r pmor30s test procedures procedure letter component test to protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on the pwb, this foil pattern acts as a fuse. 1. Foil pattern check and repairs. 1) disconnect the power supply cord, an...
25 pmor30b pmor30r pmor30s test procedures procedure letter component test 6) after that procedure, re-connect the power supply cord. 7) follow the troubleshooting guide given below for repair. Steps occurrence cause or correction the rated ac voltage is not present between 1 pin no. 5 of the 4-pin ...
26 pmor30b pmor30r pmor30s (4) remove the ah sensor. (5) install the new ah sensor. (6) reconnect all leads removed from components during testing. (7) re-install the outer case (cabinet). (8) reconnect the power supply cord after the outer case is installed. (9) reconnect the oven to the power supp...
27 pmor30b pmor30r pmor30s touch control panel assembly outline of touch control panel in addition, the synchronizing signal is available in order to compose a basic standard time in the clock circuit. Symbol voltage application vc +5v lsi(ic1) 9) relay circuit a circuit to drive the fan motor, stir...
28 pmor30b pmor30r pmor30s description of lsi lsi(iza958dr) the i/o signal of the lsi(iza958dr) is detailed in the following table. Pin no. Signal i/o description 1 tioca2 out power level data output signal for inverter unit. The power level will be decided by the time ratio of t1 and t2. 2 a20 out ...
29 pmor30b pmor30r pmor30s 21 p41 out key strobe signal. Signal applied to touch screen section. A pulse signal is input to pb1-pb5 terminal while one of g7 line keys on key matrix is touched. 22 p42 out key strobe signal. Signal applied to touch screen section. A pulse signal is input to pb1-pb5 te...
30 pmor30b pmor30r pmor30s pin no. Signal i/o description 69 xtal in internal clock oscillation frequency control input setting. The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to xtal. 70 vcc in power source voltage : +5v. The power source voltag...
31 pmor30b pmor30r pmor30s (1) structure of absolute humidity sensor the absolute humidity sensor includes two thermistors as shown in the illustration. One thermistor is housed in the closed vessel filled with dry air while another in the open vessel. Each sensor is provided with the protective cov...
32 pmor30b pmor30r pmor30s 1. Precautions for handling electronic components this unit uses cmos lsi in the integral part of the circuits. When handling these parts, the following precautions should be strictly followed. Cmos lsi have extremely high impedance at its input and output terminals. For t...
33 pmor30b pmor30r pmor30s microwave ovens contain circuitry capable of producing very high voltage and current, contact with following parts may result in severe, possibly fatal, electric shock. (example) inverter unit that includes high voltage capacitor, power transformer, high voltage rectifier ...
34 pmor30b pmor30r pmor30s removal of oven from wall (it is recommended that two people remove the oven) 1. Disconnect the power supply cord, and uncoil the power supply cord. 2. Remove the turntable tray and support from the oven cavity. 3. Remove the one (1) screw holding the exhaust damper assemb...
35 pmor30b pmor30r pmor30s 1. Disconnect the power supply cord and remove the oven from wall and remove outer case. (refer to procedure of "removal of oven from wall" and "outer case removal") 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. Disconn...
36 pmor30b pmor30r pmor30s 1. Disconnect the power supply cord, remove the oven from wall and remove outer case (refer to procedure of "removal of oven from wall" and "outer case removal".) 2. Open the door and block it open. 3. To discharge high voltage capacitor, wait for 60 seconds. 4. Disconnect...
37 pmor30b pmor30r pmor30s 1. Disconnect the power supply cord. 2. Open the door and block it open. 3. Remove the three (3) screws holding the base cover to the oven cavity. 4. Open the base cover from the oven cavity by pulling down. Removal") 4. Lift the oven lamp cover up. 5. Now, the oven lamp a...
38 pmor30b pmor30r pmor30s terminal push pull down 1 2 lever positive lock® connector positive lock ® connector (no-case type) removal 1. Disconnect the power supply cord and remove the oven from wall and remove outer case. (refer to procedure of "removal of oven from wall" and "outer case removal")...
39 pmor30b pmor30r pmor30s following adjustment should be made. 5. Loosen the two (2) screws holding latch hook to the oven cavity front flange. 6. With door closed, adjust latch hook by moving it back and forth, and up and down. In and out play of the door allowed by the upper and lower position of...
40 pmor30b pmor30r pmor30s latch spring, latch head and door panel 13.Release the latch spring from the tab of the latch head and tab of the door frame. 14.Release the latch head from the door frame. 15.Now, the latch spring, latch head and door frame are free. Figure c-3. Door disassembly door glas...
41 pmor30b pmor30r pmor30s 6 45 1 2 3 6 45 1 2 3 a b c d e f g h a b c d e f g h figure s-1. Pictorial diagram high voltage components control unit (power unit) (lsi unit) power supply cord 120v 60hz 1 2 3 wht grn blk wht grn blk oven thermal cut-out magnetron temperature fuse wht red blk red blk fa...
42 pmor30b pmor30r pmor30s 6 4 5 1 2 3 6 4 5 1 2 3 a b c d e f g h a b c d e f g h figure s-2. Power unit circuit a 5 t1 ry1 ry2 ry4 ry3 r2 91 1w cn-a cn-b cn-e cn-c 12pin wire harness ac ac inv. Com oven lamp fan motor stirrer motor inv. Com oven lamp fan motor stirrer motor turntable motor turntab...
43 pmor30b pmor30r pmor30s 6 45 1 2 3 6 45 1 2 3 a b c d e f g h a b c d e f g h figure s-3. Lsi unit circuit c 1 c 2 c 8 c 7 f 1 f 2 f 3 h 1 h 2 c 3 c12 g 7 g 1 g 2 wh-1 wh-1 ic2 ixa062dr cpu unit ic5 ixa031dr liquid crystal display 100 x 160 dots ic1 ixa029dr g 3 g14 g 5 g 6 g13 g12 g11 g 8 g 9 g1...
44 pmor30b pmor30r pmor30s 6 45 1 2 3 6 45 1 2 3 a b c d e f g h a b c d e f g h figure s-4. Printed wiring board dip 9 h xa l com h.M h.M r110 c110 cn - e cn - a c100 cn - c door sw sp30 1 7 5 3 ry3 ry2 (j1) vrs1 p s t1 xa vh d1 ttm ac motor run capacitor ry4 d22 ac d21 r2 r3 e q1 b d20 3 ssr1 qkit...
