Instruction/ maintenance manual of the product NE-1757CR Panasonic
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© 2000 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthoriz ed copying and distribution is a violation of law. NE-1257R/ NE- 1257CR NE-1757R/ NE- 1757CR NE-2157R/ NE- 2157CR NE-1258R Commercial Microw a v e Oven ORDER NO.
1 OUTLINE DIAGRAM 4 2 OPERATIO N PROCEDURE 5 3 WIRING REQUIREM ENTS AND POWER SOURCE VOLTAGE SELECTIO N 10 4 SCHEMAT IC DIAGRAM (NE -125 7R, N E-12 58R) 11 5 SCHEMAT IC DIAGRAM (NE -125 7CR) 12 6 SCHE.
14 WIRING DIAGRAM (NE -2 157 R) 21 15 WIRING DIAGRAM (NE -2 157 CR ) 22 16 DESCRIPT ION OF OPERATIN G SEQUENC E 23 17 CAUTIONS TO BE OBSERVE D WHEN TROUBLESHOOTING 24 18 DISASSEM BLY AND PARTS REPLACE.
1 OUTLINE DIAGRAM 4 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
2 OPERATIO N PROCEDU RE 5 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
6 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
7 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
8 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
9 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
Wiring Requiremen ts No other applian ce should share the circuit with the microwave oven. If it does, the branch circuit fuse may overloa d and either cause the oven to heat slower than expect ed or blow the fuse. 1. For Mode NE-1257 The oven must be on a SEPAR ATE, 20 Amp, 60 Hz-120V GROU NDED CIRCUIT.
4 SCHEMATIC DIAGRAM (NE-1257R, NE-1258R) 11 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
5 SCHEMATIC DIAGRAM (NE- 1257CR) 12 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
6 SCHEMATIC DIAGRAM (NE- 1757R) 13 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
7 SCHEMATIC DIAGRAM (NE- 1757CR) 14 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
8 SCHEMATIC DIAGRAM (NE- 2157R) 15 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
9 SCHEMATIC DIAGRAM (NE- 2157CR) 16 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
10 WIRING DIAGRAM (NE-1257R, NE-1258R) NOTE : When replacing, check the lead wire color as shown. 17 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
11 WIRING DIAGRAM (NE-1257CR) NOTE : When replacing, check the lead wire color as shown. 18 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
12 WIRING DIAGRAM (NE-1757R) NOTE : When replacing, check the lead wire color as shown. 19 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
13 WIRING DIAGRAM (NE-1757CR) NOTE : When replacing, check the lead wire color as shown. 20 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
14 WIRING DIAGRAM (NE-2157R) NOTE : When replacing, check the lead wire color as shown. 21 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
15 WIRING DIAGRAM (NE-2157CR) NOTE : When replacing, check the lead wire color as shown. 22 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
Variab le power cookin g contro l The coil of power relay A and B are energized intermittently by the digital progra mmer circuit, when the oven is set to MEDIU M or DEFRO ST power positio n. The digital progra mmer circuit contro ls the ON-OFF time of the power relay A and B contac ts in order to vary the output power of the microw ave oven.
Unlike many other applian ces, the microw ave oven is high- voltage, high-cu rrent equipm ent. Thoug h it is free from dange r in ordina ry use, extrem e care should be taken during repair. 17.1. Check the grounding Do not operat e on a 2-wire extens ion cord.
17.5. Confirm after repair 1. After repair or replace ment of parts, make sure that the screws of the oven, etc. are neither loose nor missin g. Microwave might leak if screws are not proper ly tightened. 2. Make sure that all electrical connec tions are tight before insertin g the plug into the wall outlet.
18.1. Replacement of magnetrons (Upper and Lower) Upper magne tron 1. Discha rge electric charge remain ing on the high voltage capacitors. 2. Remov e the entire rear panel by removing screws as shown. 3. Discon nect all lead wires from magne tron and thermal cutout.
Removal of Positiv e Lock conne ctor The positiv e lock connec tor is a specially design ed loose free connec tor and you will find this connec tor in many lead wire connec tions. To remove this connector, pull the lead wire by pressin g an extruded lever in the center of recept acle terminal as shown.
18.4. Replacement of upper antenna 1. Remov e ceiling plate by gently moving the left and right tabs inward while pulling the plate down and outwar d. 2. Using a small flat screwdriver or the like, remove two plastic clips located on the antenn a ring.
2. Remov e 2 screws holding temp sensor and replace with new one. 3. Solder the lead wires secure ly to the sensor termin als. 18.7. Disassembly of door assembly 1.
19.1. High voltage transformer 1. Remov e connec tions from the transfo rmer terminals and check continu ity. 2. Norma l (cold) resista nce readin gs should be as follows : Secon dary windin g Approx . 80 Ω —120 Ω Filame nt windin g Approx . 0 Ω Primary windin g Approx .
one or both directio ns. 19.7. Temp sensor (Thermal protector) A temp sensor is mount ed on exhaus t guide. Its purpos e is to autom atically shut off the oven in case the cavity overhe ats for any reason. The therma l protec tor will operate at 257°F (125°C ).
20.1. Installation of Safety switch A , Safety switch B and Short switch 1. When mount ing Safety switch A, Safety switch B and short switch to door hook assem bly, mount the Safety switch A, Safety switch B and the short switch to the door hook assem bl y as shown .
NOTE: The U. S. Gover nment standa rd is 5 mW/cm 2 while in the custom er's home. 2 mW/cm 2 stated here is our ow n voluntary standa rd. (1 mW/cm 2 for Canad a) 21.1. Equipment Note before measu ring. 1. Do not exceed meter full scale deflect ion.
34 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
22 TROUBLE SHOOTIN G GUIDE 35 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
23 EXPLODE D VIEW AND PARTS LIST 36 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
24 PARTS LIST NOTE : When ordering replace ment part(s), please use part numbe r(s) shown in this parts list. Important safety notice: Compo nents identifi ed by mark have specia l characteristic s important for safety. When replaci ng an y of these compo nents, use only manuf acture 's specifi ed parts.
Ref. No. Part No. Part Name & Description Pcs/ Set Remarks 37 A8251-3180 SPACER 1 38 A3020-3850 DOOR HOOK A 1 39 A3136-3470 HOOK SPACER A 1 40 A3137-3850 HOOK SPACER B 1 41 A3138-3470 HOOK SPACER .
Ref. No. Part No. Part Name & Description Pcs/ Set Remarks 83 A6408-3280 WASHER 1 84 ANE65448U0AP SPACER A 1 85 A6585-3280 P.C.B.HOLDER 1 86 ANE66038U0AP OVEN LAMP BRACKET 1 87 ANE66268U0AP THERMAL CUTOUT MOUNT 1 NE-1257R NE-1258R NE-1757R 88 A6688-3180 P.
25 DOOR ASSEMBL Y Ref. No. Part No. Part Name & Description Pcs/ Set Remarks D1 A3145-3500 DOOR SCREEN A 1 D2 ANE31468U0AP DOOR SCREEN B 1 D3 ANE30038U0AP DOOR FRAME(U) 1 D4 ANE301A8U0AP DOOR A 1 .
26 ESCUTCH EON BASE ASSEMBL Y Ref. No. Part No. Part Name & Description Pcs/ Set Remarks E1 A8337-3280 ESCUTCHEON SHEET 1 E2 A603M3310GP PC BOARD B (U) 1 E3 A64793310QP MEMBRANE SWITCH 1 E4 A6590-.
27 PACKING AND ACCESSO RIES Ref. No. Part No. Part Name & Description Pcs/ Set Remarks P1 A00033960CP INSTRUCTION BOOK 1 NE- 1257CR NE-1757CR NE-2157CR P1 A00033960AP INSTRUCTION BOOK 1 NE- 1257R .
28 WIRING MATERIAL Ref. No. Part No. Part Name & Description Pcs/ Set Remarks W1 A030A3960CP LEAD WIRE HARNESS 1 NE-1257CR W1 A030A3960AP LEAD WIRE HARNESS 1 NE-1257R NE-1258R W1 A030A3970CP LEAD .
29 REF. NO. 89 L. V. TRANSFORMER (U) Ref. No. Part No. Part Name & Description Pcs/ Set Remarks ANE61158U0AP POWER RELAYBRACKET 1 ANE65448U0AP SPACER A 6 ANE65458U0AP SPACER B 2 A6338-3280 INSULAT.
31 REF. NO. E2 P. C. BOARD (U) Ref. No. Part No. Part Name & Description Pcs/ Set Remarks CN250 AEEMHLIM21S CONNECTOR 1 21PIN DISP25 0 A64563080AP FLOURESCENT TUBE 1 FV443 ANE82848U2AP SPACER 1 45.
32 DIGITAL PROGRAMMER CIRCUIT SCHE MATIC DIAGRAM 46 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258R.
47 NE-1257R /NE-1257CR / NE-17 57R/N E-175 7CR / NE-21 57R/NE-215 7CR / NE-1258.
33 DIGITAL PROGRAMMER CIRCUIT PARTS LIST Ref. No. Part No. Part Name & Description Pcs/ Set Remarks BZ1 EFBRL37C20 BUZZER 1 3.7KHZ C10 35 36 37 ECA1HM471B ELECTROLYTIC CAPACITOR AL 4 470MF/50V C11 ECA1HM221B ELECTROLYTIC CAPACITOR AL 1 220MF/50V C12 13 15 28 34 AECF50F104Z CERAMIC CAPACITOR 5 0.
An important point after buying a device Panasonic NE-1757CR (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Panasonic NE-1757CR yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Panasonic NE-1757CR - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Panasonic NE-1757CR you will learn all the available features of the product, as well as information on its operation. The information that you get Panasonic NE-1757CR will certainly help you make a decision on the purchase.
If you already are a holder of Panasonic NE-1757CR, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Panasonic NE-1757CR.
However, one of the most important roles played by the user manual is to help in solving problems with Panasonic NE-1757CR. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Panasonic NE-1757CR along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
