Panasonic NN-H264SFR User manual

© 2005 Panasonic Home Appliances Microwave
Oven (Shanghai) Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
NN-P295 NN-H275
NN-S255 NN-S245
NN-H264SFR
NN-H264BFR
NN-H264WFR
NN-S254SFR
NN-S254BFR
NN-S254WFR
APH(USA)
CPH(CANADA)
Microwave Oven
Please file and use this manual together with the service manual for Model NN-S262SF (Order
No.SIMMC0203005C1)
ORDER NO.PHAMOS0503019A1
E2

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NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

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NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

1 SCHEMATIC DIAGRAM 5
1.1. APH (NN-P295, H275) 5
1.2. APH (NN-S255) 6
1.3. APH (NN-H264*FR, S254*FR) 7
1.4. CPH (NN-P295, H275) 8
1.5. CPH (NN-S255, S245) 9
2 MEASUREMENTS AND ADJUSTMENTS 10
2.1. Adjustment of primary latch switch, secondary latch switch
and short switch. 10
2.2. Measurement of microwave output 10
3 PROCEDURE FOR MEASURING MICROWAVE ENERGY
LEAKAGE 11
3.1. Equipment 11
3.2. Procedure for measuring radiation leakage 11
3.3. Record keeping and notification after measurement 11
3.4. At least once a year, have the radiation monitor checked
for calibration by its manufacturer. 12
4 SIMPLE WAY OF H.V. INVERTER/MAGNETRON
TROUBLESHOUTING 13
5 H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y6G00AP/F606Y6G00CP) 13
6 EXPLODED VIEW AND PARTS LIST 14
6.1. EXPLODED VIEW 14
6.2. PARTS LIST 15
6.3. DOOR ASSEMBLY 17
6.4. ESCUTCHEON BASE ASSEMBLY 18
6.5. PACKING AND ACCESSORIES 21
6.6. WIRING MATERIALS 22
7 DIGITAL PROGRAMMER CIRCUIT 23
7.1. NN-P295 APH/CPH 23
7.2. NN-H275 APH/CPH, NN-S255 APH/CPH 25
7.3. NN-S245 CPH, H264*FR APH, S254*FR APH 27
7.4. PARTS LIST 29
CONTENTS
Page Page
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NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

1 SCHEMATIC DIAGRAM
1.1. APH (NN-P295, H275)
5
NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

1.2. APH (NN-S255)
6
NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

1.3. APH (NN-H264*FR, S254*FR)
7
NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

1.4. CPH (NN-P295, H275)
8
NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

1.5. CPH (NN-S255, S245)
9
NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR

2.1. Adjustment of primary latch
switch, secondary latch switch
and short switch.
1.Mount the Primary latch switch, the Secondary latch switch
and the short switch to the door hook assembly as shown in
ILL.
NOTE:
No specific individual adjustments during
installation of the Primary latch switch, Secondary
latch switch or Short switch to the door hook are
required.
2.When mounting the door hook assembly to the oven
assembly, adjust the door hook assembly by moving it in
the direction of the arrows in the illustration 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 door hook assembly to the
oven assembly.
3.Reconnect the short switch and check the continuity of the
monitor circuit and all latch switches again by following the
component test procedures.
2.2. 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
*Wrist watch or stopwatch
NOTE:
Check the line voltage under load.Low voltage will
lower the magnetron output. Take the temperature
readings and heating time as accurately as possible.
1.Fill the beaker with exactly one liter of tap water.Stir the
water using the thermometer and record the water’s
temperature. (recorded as T1).
2.Place the beaker on the center of glass tray.
Set the oven for High power and heat it for exactly one
minute.
3.Stir the water again and read the temperature of the water.
(recorded as T2).
4.The normal temperature rise at High power level for each
model is as shown in table.
TABLE (1L-1min.test)
RATED OUTPUT TEMPERATURE RISE
1100W Min. 16.9°F(9.4°C)
1200W Min. 18.5°F(10.3°C)
2 MEASUREMENTS AND ADJUSTMENTS
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NN-P295 NN-H275 / NN-S255 NN-S245 / NN-H264SFR / NN-H264BFR / NN-H264WFR / NN-S254SFR / NN-S254BFR / NN-S254WFR