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Explanation of the Auto Sensor Cooking process

 1. During the first 10 second period there is no microwave

activity. When calculating the T2 time by using the
formula below make sure this 10 seconds is subtracted
from the T1 time. In other words, T1 time starts at the
end of the 10 second period.

 2. 

T1 time

The total amount of time it takes the microwave

oven to switch to T2 time after the 10second period.

 3. 

T2 time

When the steam escapes from the cooking

container placed in the oven, the steam sensor detects
it and the microprocessor calculates the balance of
cooking time. This T2 time is then shown in the display
and begins counting down.

Balance of cooking time (T2 time)

The balance of cooking time which is called T2 time,
can be calculated by the following formula.
T2 time (in sec.) = T1 time X K factor

NOTE:

Remember, the T1 time starts after the 10 second
period. The coefficient K is programmed into the
microprocessor memory and they are listed in the
following tables along with the P1 and P2 powers.

NOTE:

When "More" or "Less" pad is selected, the K factor
varies resulting in T2 time to be increased or decreased.

Example of calculating the T2 time

Example 1: If the T1 time is measured to be 2 minutes and
40 seconds after the 10 second period.
T2 = T1 × K
= 2 min. and 40 sec. × 1.1
= 160sec. × 1.1
= 176 sec.

Category

P1

Power

P2

Power

K Factor

Standard

Frozen Entrees Power Level P6 Power Level P7

0.5

2.5. Sensor reheat

Auto Sensor Reheat is a quick and easy way to reheat
refrigerated and room temperature foods.
Simply press the reheat pad. There is no need to select power
level and cooking time.

NOTE:

The Auto Sensor Reheat process is similar as Auto Sensor
Cooking process.

Balance of cooking time (T2 time)

The balance of cooking time which is called T2 time, can be
calculated by the following formula.
T2 time (in sec.) = T1 time X K factor

NOTE:

Remember, the T1 time starts after the 10 second period.
The coefficient K is programmed into the microprocessor
memory and they are listed in the following tables along
with the P1 and P2 powers.

NOTE:

When "More" or "Less" pad is selected, the K factor varies
resulting in T2 time to be increased or decreased.

Example of calculating the T2 time

Example 1: If the T1 time is measured to be 2 minutes and
40 seconds after the 10 second period.
T2 = T1 × K
= 2 min. and 40 sec. × 1.1
= 160sec. × 1.1
= 176 sec.

Category

P1

Power

P2

Power

K Factor

Standard

Sensor Reheat Power Level P10 Power Level P6

0.2 or 0.4

2.6. Steam sensor and digital

programmer circuit

In order to determine if the steam sensor function of the digital
programmer circuit is working, do the following test.
 1. Place a water load (100 cc) in the oven.
 2. Tap Sensor Reheat pad.
 3. Tap Start pad.
 4. Steam Sensor detects steam about 1.5 to 2 minutes after

the Start pad is tapped.

 5. T1 time cooking automatically switches to remaining time

for cooking (T2).

 6. The remaining cooking time (T2) appears in display

window. If the following cooking time appears, Steam
Sensor function is normal.

T1 TIME

T2 TIME (Remaining cooking

time)

50 Sec. ~ 2 Min.

0 Sec. ~ 24 Sec.

7

NN-SE795S / NN-ST785S / NN-ST775S / NN-ST765S / NN-SD765S / NN-SD755S

Содержание NN-SE795S

Страница 1: ...Panasonic Appliances Microwave Oven Shanghai Co Ltd 2015 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S CPH CANADA Microwave Oven ORDER NO PAPMOSH1501004CE E1...

Страница 2: ...2 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 3: ...3 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 4: ...TS AND ADJUSTMENTS 16 6 1 Adjustment of primary interlock switch secondary interlock switch and interlock monitor switch 16 6 2 Measurement of microwave output 16 7 PROCEDURE FOR MEASURING MICROWAVE E...

Страница 5: ...1 SCHEMATIC DIAGRAM 5 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 6: ...er in the DPC to determine operating conditions and output necessary to control PWM signal to the Inverter Power Supply for control of the output power 2 3 Inverter defrost When the Auto Control featu...

Страница 7: ...nd easy way to reheat refrigerated and room temperature foods Simply press the reheat pad There is no need to select power level and cooking time NOTE The Auto Sensor Reheat process is similar as Auto...

Страница 8: ...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 c...

Страница 9: ...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 antenna and cause m...

Страница 10: ...from D P C 2 Remove 1 grounding screw 3 Disconnect connector CN701 on H V Inverter board 4 Remove 1 screw holding escutcheon base and slide the escutcheon base upward slightly 5 Remove all screws hold...

Страница 11: ...embly 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 Open Door...

Страница 12: ...After reinstalling the new turntable motor and reconnecting the 2 lead wires reinstall the motor cover by rotating it around 180 tucking the 2 tabs under the base in the 2 provided slots then screw t...

Страница 13: ...t 1 Discharge high voltage charge 2 Remove the H V lead wire from magnetron terminals 3 Disconnect 2 connectors from CN701 CN702 on H V Inverter U 4 Remove 1 screw holding grounding plate to the base...

Страница 14: ...ock Switch 0 Close Open Secondary Interlock Switch 0 Close Open Power Relay RL1 Open Open 5 2 Interlock Monitor Switch 1 Unplug lead wires from Inverter Power Supply U primary terminals 2 Connect test...

Страница 15: ...b Press Start button once c Press Power Level button once For SE795S ST785S ST775S ST765S models a Press Clock button once b Press Timer button once c Press Start button once d Press Power Level butt...

Страница 16: ...nterlock switches again by following the component test procedures 6 2 Measurement of microwave output The output power of the magnetron can be determined by performing IEC standard test procedures Ho...

Страница 17: ...cm spacer supplied with the probe 4 Tap the start button or set the timer and with the magnetron oscillating measure the leakage by holding the probe perpendicular to the surface being measured 7 2 1...

Страница 18: ...7 4 At least once a year have the radiation monitor checked for calibration by its manufacturer 18 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 19: ...tion manual in order to find the exact cause of any trouble since operator error may be mistaken for the oven s malfunction H97 H98 error code display If 3 times H97 or 2 times H98 exist microwave ove...

Страница 20: ...ls from DPC but magnetron is not oscillating 1 Magnetron 2 Loose lead wire connector CN703 3 H V Inverter U Oven stops in 10 seconds after pressing Start pad Auto sensor cooking Steam sensor circuit i...

Страница 21: ...voltage circuit especially magnetron filament circuit NOTE Large contact resistance will cause lower magnetron filament voltage and cause magnetron to have lower output and or be intermittent 3 Defect...

Страница 22: ...ton once press Timer button once press Start button once press Power Level button once For NN SD765S SD755S models press Timer Clock button twice press Start button once press Power Level button once...

Страница 23: ...ower 1 IC1 pin 8 voltages while operation at high power Abnormal IC1 Normal 5V Step2 2 Collector of Q227 voltage Abnormal Q227 and or Q225 Q226 Q228 Normal 0 7V Step3 3 Short circuit between collector...

Страница 24: ...2 Collector of Q227 voltage Abnormal Q227 and or Q225 Q226 Q228 Normal 0 7V Step3 3 Short circuit between collector of Q227 and emitter of Q225 Still not turn on RL1 RL1 turns on Q227 and or Q225 Q226...

Страница 25: ...ltage Abnormal Q227 and or Q225 Q226 Normal 0 7V Step3 3 Short circuit between collector of Q227 and emitter of Q225 Still not turn on RL1 RL1 turns on Q227 and or Q225 Q226 Dark or unclear display 1...

Страница 26: ...en Inverter and magnetron terminal 2 Between 1 0A and 2 0A Check continuity of D702 in Inverter PCB 1 D702 shorted Replace H V Inverter F606Y9X90AP 2 D702 is OK Replace magnetron Shut off in 3 seconds...

Страница 27: ...8 7 How to check the semiconductors using an OHM meter 27 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 28: ...9 EXPLODED VIEW AND PARTS LIST 9 1 EXPLODED VIEW 28 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 29: ...GUIDE B 1 21 F41445W00AP ORIFICE 1 22 F64508660AP SENSOR COVER B 1 24 F65434W00AP SENSOR COVER C 1 25 J607S4M00AP STEAM SENSOR 1 26 F612EBP20AP LAMP U 1 LED LAMP INSIDE 27 J61415G10XN MICRO SWITCH 1 P...

Страница 30: ...to D P CIRCUIT DU CN5 E5 F8057BP20BAP ESCUTCHEON BASE B 1 SE795S E6 F891PBP20SAP DOOR OPENING BUTTON U 1 SE795S E7 F82565X00AP DOOR OPENING LEVER 1 E8 F80375K00AP COOK BUTTON SPRING 1 E10 F90098N00AP...

Страница 31: ...P90SCP ESCUTCHEON BASE U 1 ST785S E24 F6616BP90AP FLAT CABLE 1 ST785S E25 F8298BP90KAP BUTTON 1 ST785S E26 F891PBP90SAP DOOR OPENING BUTTON U 1 ST785S E27 F82565X00AP DOOR OPENING LEVER 1 E28 F80375K0...

Страница 32: ...ST775S E43 F800LBQ00SCP ESCUTCHEON BASE U 1 ST775S E45 F8298BQ00KAP BUTTON 1 ST775S E46 F891PBP90SAP DOOR OPENING BUTTON U 1 ST775S E47 F82565X00AP DOOR OPENING LEVER 1 E48 F80375K00AP COOK BUTTON SP...

Страница 33: ...765S E63 F800LBQ10BCP ESCUTCHEON BASE U 1 ST765S E66 F891PBP90SAP DOOR OPENING BUTTON U 1 ST765S E67 F82565X00AP DOOR OPENING LEVER 1 E68 F80375K00AP COOK BUTTON SPRING 1 E70 F90098N00AP GROUNDING PAN...

Страница 34: ...65S SD755S E105 F8298BE30SAP BUTTON 1 SD765S SD755S E106 F80724W70SAP DOOR OPENING BUTTON U 1 SD765S SD755S E107 F82565X00AP DOOR OPENING LEVER 1 E108 F80375K00AP COOK BUTTON SPRING 1 E110 F90098N00AP...

Страница 35: ...2ABP90SCP DOOR A U 1 ST785S ST775S D2 F302ABQ10SCP DOOR A U 1 ST765S D2 F302ABP40SCP DOOR A U 1 SD765S D2 F302ABP60SCP DOOR A U 1 SD755S D3 F302KBF20AP DOOR E U 1 D4 F30216P40AG DOOR KEY SPRING 1 D5 F...

Страница 36: ...ALS Ref No Part No Part Name Description Pcs Set Remarks W1 F030ABP20CP LEAD WIRE HARNESS 1 INCLUDING MAGNETRON THERMISTOR W2 F030E8W50AP H V LEAD WIRE 1 36 NN SE795S NN ST785S NN ST775S NN ST765S NN...

Страница 37: ...CASE PAPER 1 ST775S P2 F0102BQ10SCP PACKING CASE PAPER 1 ST765S P2 F0102BP40SCP PACKING CASE PAPER 1 SD765S P2 F0102BP60SCP PACKING CASE PAPER 1 SD755S P3 F0104BP80AP UPPER FILLER 1 P4 F0105BP80AP LO...

Страница 38: ...10 DIGITAL PROGRAMMER CIRCUIT 10 1 SCHEMATIC DIAGRAM NN SE795S 38 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 39: ...39 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 40: ...40 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 41: ...10 2 SCHEMATIC DIAGRAM NN ST785S ST775S ST765S 41 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 42: ...42 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 43: ...10 3 SCHEMATIC DIAGRAM NN SD765S SD755S 43 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 44: ...44 NN SE795S NN ST785S NN ST775S NN ST765S NN SD765S NN SD755S...

Страница 45: ...29 POWER RELAY 1 T10 G4DYA0000681 SWITCH POWER SUPPLY 1 120V FUSE1 K5G402YA0159 FUSE 1 4A 250V SW1 SW23 EVQ11L05R SWITCH 23 10 4 3 NN ST775S Ref No Part No Part Name Description Pcs Set Remarks BZ210...

Страница 46: ...AA1 L S I 1 IC10 C0DBGYY05981 IC 1 VOLTAGE STABILIZED IC25 C0DBBYY00073 IC 1 IC480 C0ABBA000230 IC 1 PC25 B3PAA0000302 IC 1 RL1 K6B1AYY00129 POWER RELAY 1 T10 G4DYA0000681 SWITCH POWER SUPPLY 1 120V Z...

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