Panasonic NN-SN776S User manual

ORDER NO.PHAMOS0601003A1
E1
Microwave Oven
NN-SN776S / NN-SN756S / NN-SN756B / NN-SN756BT / NN-
SA746M
APH(USA)
CPH(CANADA)
Please file and use this specified manual together with the service
manual for Model NN-T695 (ORDER NO. PHAMOS0501001C1).
SPECIFICATIONS
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2006 Panasonic Home Appliances Microwave Oven (Shanghai) Co.,
Ltd. / All rights reserved. Unauthorized copying and distribution is a
violation of law.
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1. SCHEMATIC DIAGRAM
1.1. APH
1.2. CPH
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2. MEASUREMENTS AND ADJUSTMENTS
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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.
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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)
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RATED OUTPUT TEMPERATURE RISE
1200W Min. 18.5°F(10.3°C)
1300W Min. 19.8°F(11.1°C)
3. PROCEDURE FOR MEASURING MICROWAVE
ENERGY LEAKAGE
NOTE:
The U.S. Government standard is 5 mW/cm2 while in the customer’s
home. 2mW/cm2 stated here is our own voluntary standard. (1mW/cm2
for Canada)
3.1. Equipment
- Electromagnatic radiation monitor
- Glass thermometer 212°F or 100°C
- 600cc glass beaker
3.2. Procedure for measuring radiation leakage
Note before measuring.
- Do not exceed meter full scale deflection. Leakage monitor should
initially be set to the highest scale.
- To prevent false readings the test probe should be held by the grip
portion of the handle only and moved along the shaded area in Figure
no faster than 1 inch/sec (2.5cm/sec).
- Leakage with the outer panel removed ...... less than 5mW/cm2.
- Leakage for a fully assembled oven with door normally closed ...... less
than 2mW/cm 2 (1mW/cm 2 for Canada).
- Leakage for a fully assembled oven [Before the latch switch (primary) is
interrupted] while pulling the door ...... less than 2mW/cm 2.
1. Pour 275 ± 15cc (9ozss± 1/2oz) of 20°C ± 5°C (68° ± 9°F) water in a
beaker which is graduated to 600cc, and place in the center of the oven.
2. Set the radiation monitor to 2450MHz and use it following the
manufacturer's recommended test procedure to assure correct results.
3. When measuring the leakage, always use the 2 inch (5cm) spacer
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supplied with the probe.
4. Tap the start pad or set the timer and with the magnetron oscillating,
measure the leakage by holding the probe perpendicular to the surface
being measured.
3.2.1. Measurement with the outer panel removed.
Whenever you replace the magnetron, measure for radiation leakage before the outer panel is installed
and after all necessary components are replaced or adjusted. Special care should be taken in
measuring around the magnetron.
3.2.2. Measurements with a fully assembled oven.
After all components, including outer panel are fully assembled, measure for radiation leakage around
the door periphery, the door viewing window, the exhaust opening, control panel and air inlet openings.
3.3. Record keeping and notification after measurement
- After any adjustment or repair to a microwave oven, a leakage reading
must be taken. Record this leakage reading on the repair ticket even if it
is zero.
A copy of this repair ticket and the microwave leakage reading should
be kept by repair facility.
- Should the radiation leakage be more than 2 mW/cm2 (1mW/cm for
Canada) after determining that all parts are in good condition,
functioning properly, and genuine replacement parts as listed in this
manual have been used, immediately notify PASC, PSC or PCI.
3.4. At least once a year, have the radiation monitor checked for
calibration by its manufacturer.
4. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
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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.
Power will: Ammeter reading is: To do: Remedy:
Shut off in 23
seconds after
“Start”.
1. Between 0.5A and 1.0A. Check and repair open
magnetron circuit
Open magnetron wiring
between 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
(F606Y6G00CP)
2. D702 is OK Replace magnetron
Shut off in 3
seconds after
“Start”
1. Less than 0.5A Check open circuit: Latch
Switch, DPC, Power Relay and
CN701
Replace defective
component(s), or correct
switch, cables and
connectors.
5. H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y6G00CP)
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Ref. No. Part No. Part Name & Description Pcs/Set Remarks
C707 ECWH30822JUA CAPACITOR 1 8200PF,3000VDC
C706 ECWH30562JUA CAPACITOR 1 5600PF,3000VDC
D701,D702 B0FBAZ000001 DIODE SI 2
DB701 B0FBBS000001 BRIDGE DIODE 1 20A,600V
L701 F50206G00AP CHOKE COIL 1
Q701 B1JAGV000008 TRANSISTOR SI 1 900V
T701 A609A6G00CP H.V. TRANSFORMER 1
C701 ECWF5324N310 CAPACITOR 1
C702 ECWF2455N614 CAPACITOR 1
D709 ERZV10D621CS VARISTOR 1
6. EXPLODED VIEW AND PARTS LIST
6.1. EXPLODED VIEW
6.2. 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
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specified parts.
NOTE:
“A” parts are supplied by CSD (Japan)
“F” parts are supplied by PHAMOS (China)
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Ref. No. Part No. Part Name & Description Pcs/Set Remarks
1F00064W70AP CAUTION LABEL 1 SN776S APH,SN756S APH
1 F00069660AP CAUTION LABEL 1 SN756B APH,SN756BT APH,SA746M APH
1 F00067600CP CAUTION LABEL 1 CPH
2F00078E10BAP NAME PLATE 1 SN756B APH
2 F00078E10APT NAME PLATE 1 SN756BT APH
2 F00078E30SAP NAME PLATE 1 SA746M APH
3F00338F00AP FUSE LABEL 1
4F10016H60APG BASE 1
5F10084T00AP RUBBER FOOT 4
6F110D5X00SAP CABINET BODY(U) 1 SN776S CPH
6 F110D5X20SAP CABINET BODY(U) 1 SN776S APH,SN756S APH,SA746M APH
6 F110D5X20BAP CABINET BODY(U) 1 SN756B APH,SN756BT APH
7 F200A8E00AP OVEN(U) 1 EXCEPT SA746M APH
7 F200A8E40AP OVEN(U) 1 SA746M APH
8F20555K00AP COVER 1
9F21315Y00AP PULLY SHAFT 1
10 F2177-F80 WASHER 1
11 F290D9330AP ROLLER RING(U) 1
12 F3020-1200 DOOR HOOK 1
14 F3136-1200 HOOK LEVER A 1
15 F31374650AP HOOK LEVER B 1
16 F31384650AP HOOK LEVER C 1
17 F400A5Y00AP FAN MOTOR 1 AC120V,SINGLE PHASE,60Hz
18 F40084T00AP FAN BLADE 1
19 F40254W00AP AIR GUIDE A 1
20 F40264T60APG AIR GUIDE B 1
21 F41445W00AP ORIFICE 1
22 F64508660AP SENSOR COVER B 1 EXCEPT SA746M APH
24 F65434W00AP SENSOR COVER C 1 EXCEPT SA746M APH
25 A607S4M00AP STEAM SENSOR 1 EXCEPT SA746M APH
26 F612E5Y30AP INCANDESCENT LAMP(U) 1
27 J61415G10XN MICRO SWITCH 1 (PRIMARY LATCH SWITCH) (V-15G-3C25)
28 J61414T00AP MICRO SWITCH 1 (SECONDARY LATCH SWITCH) (D3V-16G-3C25)
29 F61456N60AP THERMAL CUTOUT 1 150°C/-20°C
31 F61785U30XN MICRO SWITCH 1 (SHORT SWITCH) (D3V-1G-2C25)
32 F606Y6G00CP H.V.INVERTER(U) 1
33 F65856K50AP INVERTER BRACKET 1
34 2M261-M32KLY MAGNETRON 1 APH
34 2M261-M32J MAGNETRON 1 CPH
35 F62308F00AP FUSE 1 20A/120V,60Hz
37 F63265G60AP TURNTABLE MOTOR 1
38 F900C4T60CP AC CORD W/PLUG 1 SN776S APH,SN756S APH
38 F900C4T00AP AC CORD W/PLUG 1 SN756B APH,SN756BT APH,SA746M APH
38 F900C4W10CP AC CORD W/PLUG 1 CPH
39 F66626H60AP GROUNDING PLATE 1
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Ref. No. Part No. Part Name & Description Pcs/Set Remarks
40 XTWFA4+12T SCREW 4 FOR MAGNETRON
41 F90804W00AP CANOE CLIP 1 FOR COVER
42 XTTAFE4T12A0 SCREW 5 FOR CABINET BODY
43 XTTFA4+6BFZ SCREW 2 FOR CABINET BODY SIDE (SN756B APH,SN756BT APH)
43 XTTFA4+6BN SCREW 2 FOR CABINET BODY SIDE (EXCEPT SN756B APH &
SN756BT APH)
45 F692Y8A00AP NOISE FILTER 1
46 F03347D60AP MENU LABEL 1 SN776S APH
46 F03347D60CP MENU LABEL 1 SN776S CPH
6.3. ESCUTCHEON BASE ASSEMBLY
6.3.1. NN-SN776S APH/CPH
Ref. No. Part No. Part Name & Description Pcs/Set Remarks
E1 F603L8E00AP D.P.CIRCUIT (AU) 1 SN776S APH
E1 F603L8E00CP D.P.CIRCUIT (AU) 1 SN776S CPH
E2 F603Y5W00AP D.P.CIRCUIT (DU) 1 SN776S APH
E2 F603Y5W00CP D.P.CIRCUIT (DU) 1 SN776S CPH
E3 F800L8E00SAP ESCUTCHEON BASE (U) 1 SN776S APH/CPH
E4 F66164W20AP FLAT CABLE 1 SN776S APH/CPH
E5 F82988F00KAP BUTTON 1 SN776S APH/CPH
E6 F80724W70SAP DOOR OPENING BUTTON (U) 1 SN776S APH/CPH
E7 F82565X00AP DOOR OPENING LEVER 1 SN776S APH/CPH
E8 F80375K00AP COOK BUTTON SPRING 1
E9 F630Y8E00BAP MEMBRANE SWITCH (U) 1 SN776S APH
E9 F630Y8E00SCP MEMBRANE SWITCH (U) 1 SN776S CPH
E10 F90095X00AP GROUNDING PANEL 1 SN776S APH/CPH
E15 F00078E00SAP NAME PLATE 1 SN776S APH
E15 F00078E00SCP NAME PLATE 1 SN776S CPH
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6.3.2. NN-SN756S APH
Ref. No. Part No. Part Name & Description Pcs/Set Remarks
E21 F603L7B90AP D.P.CIRCUIT (AU) 1 SN756S APH
E23 F800L7B70SAP ESCUTCHEON BASE (U) 1 SN756S APH
E26 F80724W70SAP DOOR OPENING BUTTON (U) 1 SN756S APH
E27 F82564W00AP DOOR OPENING LEVER 1 SN756S APH
E28 F80375K00AP COOK BUTTON SPRING 1
E29 F630Y8E20BAP MEMBRANE SWITCH (U) 1 SN756S APH
E33 F81274W70APG BACK PANEL 1 SN756S APH
E35 F00078E20SAP NAME PLATE 1 SN756S APH
6.3.3. NN-SN756B APH, SN756BT APH, SA746M APH
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Ref. No. Part No. Part Name & Description Pcs/Set Remarks
E41 F603L8E10AP D.P.CIRCUIT (AU) 1 SN756B APH,SN756BT APH
E41 F603L7C60AP D.P.CIRCUIT (AU) 1 SA746M APH
E43 F80346J00BAP ESCUTCHEON BASE 1 SN756B APH,SN756BT APH
E43 F80346J00SAP ESCUTCHEON BASE 1 SA746M APH
E46 F80726J00BAP DOOR OPENING BUTTON 1 SN756B APH,SN756BT APH
E46 F80726J00SAP DOOR OPENING BUTTON 1 SA746M APH
E47 F82564W00AP DOOR OPENING LEVER 1 SN756B APH,SN756BT APH,SA746M APH
E48 F80375K00AP COOK BUTTON SPRING 1
E49 F630Y8E10BAP MEMBRANE SWITCH (U) 1 SN756B APH,SN756BT APH
E49 F630Y8E30SAP MEMBRANE SWITCH (U) 1 SA746M APH
6.4. PACKING AND ACCESSORIES
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Ref. No. Part No. Part Name & Description Pcs/Set Remarks
P1 F00037C40AP INSTRUCTION MANUAL 1 SN756S APH,SN756B APH,SN756BT APH
P1 F00037C50AP INSTRUCTION MANUAL 1 SN776S APH
P1 F00037C50CP INSTRUCTION MANUAL 1 SN776S CPH
P1 F00036J30AP INSTRUCTION MANUAL 1 SA746M APH
P2 F01028E00SAP PACKING CASE,PAPER 1 SN776S APH
P2 F01028E00SCP PACKING CASE,PAPER 1 SN776S CPH
P2 F01028E20SAP PACKING CASE,PAPER 1 SN756S APH
P2 F01028E10BAP PACKING CASE,PAPER 1 SN756B APH,SN756BT APH
P2 F01028E30SAP PACKING CASE,PAPER 1 SA746M APH
P3 F01044W00AP UPPER FILLER 1 SN776S APH/CPH,SN756S APH
P3 F01045J00AP UPPER FILLER 1 SN756B APH,SN756BT APH,SA746M APH
P4 F01054W00AP LOWER FILLER 1 SN776S APH/CPH,SN756S APH
P4 F01055J00AP LOWER FILLER 1 SN756B APH,SN756BT APH,SA746M APH
P5 F01067C50AP P.E.BAG 1 EXCEPT SA746M APH
P5 F01064W00AP P.E.BAG 1 SA746M APH
P6 F01074W00AP DOOR SHEET 1
P7 F06014W00AP COOKING TRAY 1
P8 F01084W00AP TRAY PACKING 1
P9 F00065G40AP CAUTION LABEL 1 APH
P10 F02445Y00AP CAUTION LABEL 1 SN776S CPH
P12 F01924U00AP SHEET 1 EXCEPT SN776S CPH
P13 F04458E00SCP OVERLAY 1 SN776S CPH
P14 F04317D00CP UPPER-CABINET TEMPLATE 1 CPH
6.5. DOOR ASSEMBLY
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Ref. No. Part No. Part Name & Description Pcs/Set Remarks
D1 F3018-1200 DOOR KEY A 1
D2 F301A8E00SAP DOOR A (U) 1 SN776S APH,SN756S APH
D2 F301A8E00SCP DOOR A (U) 1 SN776S CPH
D2 F30016J00BAP DOOR A 1 SN756B APH,SN756BT APH
D2 F30016J00SAP DOOR A 1 SA746M APH
D3 F302K4W00AP DOOR E (U) 1
D4 F30215G10XN DOOR KEY SPRING 1
D5 F30854W00AP DOOR C 1
D6 F31454W00AP DOOR SCREEN A 1
D7 F31468E30BAP DOOR SCREEN B 1 SN756B APH,SN756BT APH,SA746M APH
D8 F02459660AP DHHS LABEL 1 SN776S APH,SN756S APH
D8 F04114180CP HC LABEL 1 SN776S CPH
6.6. WIRING MATERIALS
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