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Service
NOTE:
This Service Manual repeaces Service Manual Order No. MMCA9ö10016Ci
MWA
97030!5Sl
b."o.dels NE-1257A'C
NE-2157A.'C.
Specifications:
Models:
NE.1257A
Power
Source.'
120V AC Single Phase 60Hz
Power Requiremenl$:
'High frequency Ouqput:
MED
LOW
Microwave Frequency;
Maximum programmable Éme tor single stage heating
T?mer:
HI antl MED powæ-r IS min
DEF = 30 mn.
Oueside
Dimensions;
Inside
Dimensions:
330mm
Weight:
Panasonic
and Supplements Order No. MMCA97J3015Sl,
and NE. f 757A'C
as well as Service
i NE-i257C
1gsow-
(1
120-ow
öaow
340W
X 20-
X
il-4}
X
X 335mm
X 31 Omm
X 175mm (H)
'Output power: *EC706-eB Test procedure
SpecificaEions subjece ea change without notice
Manual
Commerciai
MODELS
NE-1257A
NE-1257C
NE-1757A
NE.1757C
NE-.2157C
and Supplements Order Nc.
MMCA97060i
731 and MMOC971202391
Order
No_ MMOC97T1ß27C1
NE-1757C
NE-1757A
AC Single Phase 60Hz
2650W, (14..1A}208V
03.3A}
272DW.03.3A} 23DV! 2530W. {12.3A) 230V;
1700W
85QW
340W
2,450MHz
62 Ib$/28-3 kg
AILngh1R
ORDER
NO. MMOCG8020$6C.l
Ela
Microwave
Oven
USA
ANADA
APH
CPH
for
for ModeFs
INE.2157A'C
3200"
(IS..3A)
2100W
1050W
340W
65 10&29.5 kg
co..
Ltd.
c*yiT.g
and
a
of
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Related Manuals for Panasonic NE-1257A
Summary of Contents for Panasonic NE-1257A
- Page 1 NOTE: This Service Manual repeaces Service Manual Order No. MMCA9ö10016Ci and Supplements Order Nc. 97030!5Sl and Supplements Order No. MMCA97J3015Sl, MMCA97060i 731 and MMOC971202391 b."o.dels NE-1257A'C and NE. f 757A'C as well as Service Order No_ MMOC97T1ß27C1 for ModeFs NE-2157A.'C.
- Page 2 IN U.S.A. Panasonc Home & Commercial Products Company One Panasonic Way. Panazip: 4A-5 Secaucus. New Jersey 07094 Altenlion; Service Engineering 6. There are special cornpanenls used In the mcrmuave oven •which are far safety. These parts are with a in the replacement parts list. It is essential Zhalthese critical pans should be replaced only with the manufacturers specified parts prevent microwava leakage, shock.
- Page 3 CONTROL PANEL ±T.v..r STAGF LIJI- - 10 Digital Display Window (see below) Start Program Pad Oven Lamp Cover Power Level Selector Door Handle NumberfMemory Pads Air Filter Stop/Reset Pad Splatter Shield (top of inner cavity) DIGITAL DISPLAY WINDOW PROG 8888 STAGE A-Program Display...
- Page 4 OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE 1. Manual heating for single stage heating 2. Manual heating for 2nd stage heating OPERATION DISPLAY OPERATION 1. Plug lhe powar supply wall . Follow steps 1 •.c for single stage. 2. open l.ne ocor. 2.
- Page 5 3. Memory setting for single stage heating OPERATION RATION l. Oi•splilY rr•usl be blark terar2 pro• Touch PRCG padagain. or•ammingcan begln. Heel:ng time is displayed adding pad. Single am 2r•d I lii•e. Prog b inkiFQand sage indica• LOTS remain III. Proar3111rliing lor 2nd PRIX, Slane haa1i"lQ is mr•nNeta-d.
- Page 6 6, Setting time for Alr Filter Replacement 7. To Read the cycle Counter OPERATION OPERATION 1. Opan door and leave it open. ov,Bn tne coor and leave it open. ! E.While "3•ss.ngSTART:pad. Whilepressing STOP "RESET 6655 and open the gad. press *ach memory øaø. The dispay snows numbar of time-s each memory pad Fas been...
- Page 7 To select length of tone at end of heating cycle there 9. To Release Program Lock are 2 options. OISPLAY A. 3 beeps {factory setting). 1. Plug thæ power cord into B. 60 seconds of short beeps. rcceotac19. To set for 60 seconds of shon beeps CPERATION DISPLAY 2 apgr'l the door.
- Page 8 w." hSEL Napa UDISIUV,•,.
- Page 9 LÉ.*C: e OLSI.•••.•.
- Page 10 VähO UOLRWVh. w:rag...
- Page 11 #ääI-C i...
- Page 14 WIRING DIAGRAM (NE-1257A) NOTE: When replacing, check the Fead wire color as shown. Mag netron [UPPER} D•od8 {LOWER) HIGH VOLTAGE CAPACITOR (UPPER} Oi.cde HIGH VOLTAGE h*agnetron VOLTAGE TRANSFORMER CLOWER} TRANSFORMER (LOWER) NOTE: •When reolacing, check the lead mre color as shown.
- Page 15 WIRING DmGRAM (NE-1257C) NOTE: Wnen replacing, check the tead wire c.o'or as shown. Magnetron {UPPER} Diode {LOWER) HIGH VOLTAGE CAPACITOR (UPPER} Oicoe HIGH VO'TAGE %gnetron HIGH VOLTAGE TRANSFORMER (LOWER) TRANSFORMER (UPPER} NOTE: •When lepzacing, check tbo leac color as shown. WIRING DIAGRAM *Carote shown by (...
- Page 16 WIR'NG DIAGRAM (NE-1757A) NOTE: When replacing, check lhe lead wire color as shown. Magnetron Oioee HIGH VOLTAGE CAPACITOR (UPPER) Chode VOLTAGE Magnetron HIGH VOLTAGE TRANSFORMER TRANSFORMER 'LOWER) {UPPER} {LOWER) WIRING DIAGRAM NOTE: 'When replacing. checx Ehelaad wire color as shown. •colors sncwn by ( indicate colors of leac wire connector housing.
- Page 17 WIRING DIAGRAM (NE-1757C) NOTE: When replacing%check the lead wire calor as shown. Magnetron [UPPER) Deoae (LOWER} HtGH VOLTAGE CAPACTOR (UPPER} Dioda HIGH VOLTAGE HICH VOLTAGE Magnstron TRANSFORMER TRANSFORMER {LOWER} (UPPER) (LOWER) NOTE: •When replacing, chec.Kth$ lead wire color as shown. WIRING DIAGRAM 'Colors...
- Page 18 WIRING DIAGRAM (NE-2157A) NOTE: When replating, check the wire color as shown. Magnetron (UppeR} Dioda (LOWER) HIGH VOLTAGE CAPACITOR (UPPER} Doda VOLTAGE h&gnetrera HIGH VOLTAGE TRANSFORMER (LOWER} TRANSFORMER quppER) (LOWER) NOTE: •Whan replacing. chack the read wire color as snown, WIRING DIAGRAM *Colors shown by (...
- Page 19 WIRING DtAGRAM (NE-2157C) NOTE: When replacing, check lhe Leadwire color as shown, Magnetron Oiode HIGH VOLTAGE CAPACITOR {UPPER) Oiode .-.tvo HECH VOLTAGE Magnatrcn HIGH VOLTAGE TRANSFORMER {LOWER} TRANSFORMER NOTE; 'When replacing, the lead Wire color as shown. 'Colors 5horm by ( indicale color;...
- Page 20 DESCRIPTION OF OPERATING SEQUENCE Variable power cooking control The coils 01power relay RY.3and RY4 are energized intermittently by the digital programmer circuit. when the oven is set to MEDIUM or DEFROST power position. The digital programmer circuit controls the ON-OFF time of the power relay RYI and RY2 conkacts in order to vary the OLEIput power ot the microwave oven.
- Page 21 VOI:line with 208 vo[tage will towar lhe power outpu' ot oven, {gsulting in heating 01 the food. Panasonic is NOT responsible tor damage resulting [rom Ine use or Fle oven wilh other than specified vouage. NE-21ST v.•aov NE-MA...
- Page 22 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appåances_ thg m.;crowaueoven is high-voltage. Important Note high-current equipment. Though it free from dangel in 01dinary 1. High vollage above 250 volts exist on tha following parls use, extrema care should be laken during rapair. during opera!ion.
- Page 23 DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE CAUTION I Servicem should r emove their w atches whenever work- ing cfose to or replacing Themagnetron. 1. Replacement ot magnetrons Upper magnetron (A) Döcharqe electri= drarge remaining on Ihe hgh vot•taqacapacitors. (B) Remove 'he enlire rear panei by iernoving screws as shown. (FIG.
- Page 24 Removal or P0$lUve Lock (FIG. & {FIG. 8} The pos'UVG lock conneclo: is a specially dac:gned locking type connector and you will find this conneclor in many lead wire con- neclions. To remove this conneclgr, pull lhe lead wiro while pressing OISCONNECT tha IG•ckinglever in the center receptacle terminal as shown.
- Page 25 4. Replacement 01 upper antenna CAUTEON The upper and lower rotating antennas are different types . and are not interchangeable witn each other. Care should be taken not to reverse the top and Bonom antemas_ (A) Romove ceding plate by genEy moving The and right tabs inward while pulling lhe plate down and outward.
- Page 26 6. Replacement temperature sensor (Thermal protectGO (FIG. 13) (A) CUE2 lead wires 31the eep ot sensor terminals. (B) Remove 2 screws holding lemp sensor and replace with new ong- Solder Eha lead wires securely to 'he sensor termnalS 7. Disassembly of door assembly (FIG. 141 (A) Remove 2 boll* each holding and lower hinges.
- Page 27 COMPONENT TEST PROCEDURE CAUTION WINDING 1. High voltage is present aTlhe high voltage terminal cf TERMNALSfD SCALE the high voltage Iransfarmer during any cook cycte. P. 11 ig neikher necessary nor advisable attempt mea- surernent of the high voltage. SECONDARY a.
- Page 28 4. Diode (FIG. 20) (A) Isolate the diode from Ehacircuil by disconnecling lhe leads. Wilh the ohmmeter set on the highest resistance scale. measure the resistance across the diode terminals. Reverse the meter leads end again observe the resistance reading. A metar wilh öV.
- Page 29 MEASUREMENTS ADJUSTMENTS WARNING For continued protection against excessive radialion emis- sion, replaceonly with identical replacementparts,When DOOR the 18.125 Amp. fuse is blown due to lhe operation ot the OOOR HOOK FnterlockMonitor Switch. you must replace. ASSEMBLY TYPE V-16G-3C26(ANE61424LOAG} f or Secondary DOOR KEY A Interlock SW.
- Page 30 PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE (B) Should the radialion leakage more than WARNING Canada) after delermining that all parts are in good condition, funs- Check for radiation leakage atter every servicing, Should lioning properly. and genlÆngreplacement parts as 115ted in *115 the l*akage be more than 2 mW/cm7 {1mW.:crn;•...
- Page 31 TROUBLESHOOTING GUIDE CAUTION Ensure thal lhe oven is properly grounded betore proceeding wilh troubEesht01ing or reparr. Takethe necessary precaolionswhentroubleshootingor repairingthe highvoltage circuitry. Discharge high voltage capacitor. Whenchecking E he coniinuity 0 1Ehe switches o rthehighvoltage transtormer disconnect oneleadwirefromEhese p arts and then check conlinuitywith the AC plug removed.To do otherwisamayresult in a false readingor damage to yoovme;er.
- Page 32 EXPLODED VIEW AND PARTS LIST (NE-1257AIC, NE-1757A/C)
- Page 33 PARTS LIST (NE-1257A/C, NE-1757A/C) NOTES:• When orderingrep'acementpart(s). pleaseuse part number(s)shownin this pads list. Do not use descnptjonof the part. • Important safety nolice: Components 'denlitjed by have special characteristics important tor safety When replacing any these components, use only manuiacturer's specified parts, •...
- Page 34 CORO W.•PLUG ANE900TBVOAP ANTENNA [IJJ. ANTENNA B ANÉT032iÜoÄä CLIP (BLACKI FILTER SCREW X VN40Fl ANE9T438UOAP ANE91448UOAP BRACKET ANE91628UOAP CLIP (FOR NE-1257A. NE-125J130.SKVA) TRANSPORMEA H.V. TRANSFORMER NE-1137A. CABINET XTC4+lOBC SCREW <XID (FORLAMPCOVER) SCREW 128K x TT4*EE SCREW COVER) NE-IZ5fA. • 96...
- Page 35 MEMO...
- Page 36 EXPLODED VIEW AND PARTS LIST (NE-2157A/C)
- Page 37 PARTS LIST (NE-2157A/C) NOTES: • When ordering replacement part(s), please use pan numbeqs) shown in Ihis parts fist. 00 not use description ot the pael- • Important safety notice: Components identified by 3..mark have special charaetærislics important for salety. Whea replacing any of these components, use only manufaciurer's specified pans. •...
- Page 38 Ref.No. Pan Name & Descnptfon PesjSet Remarks B00036260AP WARNING LA?EL WARNING I-NEEL 80921 0002..] CUSHION RUBBER CUSHION RUBBER INSULATION SHEET A6070-3280 A6C'71 3280 INSULATION SHEET (V-15G-3C26}PRIMARYLATCHSWITCH ANE$142-F60 MICROSWITCH MICFöSWlTCH ANESfd24LOAG f.v- SECONOANY SWITCH A6i 44303üGP MOTOR IOWER - UPPER ANTENNA MOTOR A6144366üAP NE-215M (FOROVEN)
- Page 39 DOOR ASSEMBLY {ALL MODELS) tsa378 APR) Ret.No. Part Name 8 Description Pcg..•Se Remarks I ANE30078UOÅP i-UNGE ANE3tTA3UOAP DOOR ÅNE30TH8UOAÖ DOOR ANE30T88UOÅP ODOR ANE3ti98UOAP coopReF$RTNö ANE30218UOAP A30703170GP HANDLE PIECE ANESoa1P60AP ; OOOR HINGE SPACER ANE30858UOAP ÅNEäGdÖUÖAF HA¯NDLE P iece a ANÉ314E8UOAP 000B SCREEN ANE314E8UOAP...
- Page 40 ESCUTCHEON BASE ASSEMBLY (ALL MODELS) IS-37B APR) Pes/Set Ret.No, Part Pan Name & Description Remarks F FLAT CABLE A65go-32B0 BOARO ANE8337-3280 CUSHION RU3aE-R ANE80028UOAP ESCJTCHEON ESCUTCHEON ANE80068UNP 793650AP MEM8RANE SWITCH ANE800L8UGAP ESCUTCHEON BASE ANE80018UOAP ESCUTCHEONA...
- Page 41 PACKING ACCESSORIES OOOR INSIALL PLAT Cu' inlo pans wne-npacnng PACK r RAY PACKING INSTALLATION (INSIDE CAW I V) VIEW lhe oven obliuelv. Cul inro two pans wnen packing • (S -365,qpH) Ref.No. Part Pan Name & Description PcsjSe Remarks B0003365?ÅP INSTRUCTION 800K.•ENGLISH 800033651...
- Page 42 WIRING MATERIALS (ALL MODELS} H V CAPACITOR MAGNETRON pperj To Chassis H.V.TRANSFORMER H. V TRANSFORMER MAGNETRON {Lower} Ref.No. Part Neme & Description Pcs,Se Remarks LEAO WIRE HAHNE-SS dü30A3öSOAP 8030A36SOC? LEAD WIRE HARNESS LEAD WIRE HARNESS NE-1757A B030A3660C.? WIRE HARNESS WINE HARNESS NE-.2157A •WIX...
- Page 43 Remarks Pari Name & DescrFption Ret.No- Part REFNO.83 NOISEFILTER(Y) (CANADIANMODELSONLY) csos--¯-r ECÖU2Ä224MNA. POLYESTER CAPACITOR CAPACITOR AEEMMDOD70.3W CONNECTOR CNIO vAHlSTOR D 504 Z-RZCtODKaar 030.3 ERZV10D182 VARISTOR ERZVIOOÉIIEI VARISTOR 0502 A623160103P HOLDER 1-500 A621Å.i811 REFNÖ.äiL.VrTRANSFORMER (U) ÄLL MÖÜÉ$¯ AMÜ6114gvtÅP POWER RELAY BRACKET ANZ-654dBUOAP SPACER SPACER...
- Page 44 DIGITAL PROGRAMMER CIRCUIT (NE.1257A & C, NE1757A & C) SCHEMATIC DIAGRAM P.C.B. IAC3L3EEOAn:. (ASQ3L3650AP) S.355A1'H...
- Page 45 HM-17StRt ORE" .JPR2 SHÖäfiä P.c.e !R-12574C ii-i iSFE '*I" i?--xaw---------_ CQ-eq. — 45...
- Page 46 DIGITAL PROGRAMMER CIRCUIT (NE-2157A & C) SCHEMATIC DIAGRAM P.C.B. AU P.C.B (B603L378CAP) SS8*b8 S. 9B...
- Page 48 DIGITAL PROGRAMMER CIRCUIT (ALL MODELS) PARTS LIST Note; Items marked * are supplied by MMOC {MAC} (U.S.A.) • For niormaticn purpose only. Rems marked # are new Pan No's. far Pre I.G. Onitial Guidance) list. REF No, PART NO. DESCRIPTION REMARKS EFBRL±7C20 BUZZER...
- Page 49 Service Manual Commercial Microwave Oven MODELS ANADA NE-1257A NE-1257C NE-1757A NE.1757C NE-2157A NE-2157C Please file and use this Supplement Service Manual together with lhe following Service Manual. 257A etc.. ORDER MMOC9802046C1. WARNING This service inrorrnalien is designed [or experienced repair tec,hr11Glans o nly and nat designed for use by the general public.
- Page 50 NE-2157A NE-2157C Please file and use this Supplement Service Manual together with the following Service Manual NE-1257A etc., ORDER NO. MMOC9802C46C1- WARNING This serviceinformation designedfor experierH*2d repairlechQioians only and is not designedToruse by the generalpubtic-l! does not contain warnings or caulions to advise nonytechnical individuals OE potential dangers in aftempting to service a product.
- Page 51 WIRING MATERIALS (ALL MODELS) H.V.CAPÅCITOR (Back} (Front' MAGNETRON IUpper) To Chassrs DIODE DIODE To chassis H.V.TRANSFORMEF H. V TRANSFORMER MAGNETRON IS-373 (Lower} Part Part Name & Description Remarks 3030A3650ÅP LE.ÅD WIRE HARNESS NE-12S7A 3030A3Bö0CP LEAO WIRE HARNESS NE.12ö7C 3030A3660ÅP LEAD WIRE HARNESS NE-17S7A...
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