NN-S651WF, NN-S541WF - Panasonic Home Appliance Service Manual (repair manual)

nn-s651wf, nn-s541wf service manual
Model
NN-S651WF NN-S541WF
Pages
28
Size
3.44 MB
Type
PDF
Document
Service Manual
Brand
Device
Home Appliance / MICROWAVE OVEN
File
nn-s651wf-nn-s541wf.pdf
Date

Read Panasonic NN-S651WF / NN-S541WF Service Manual online

Service Manual
ORDER NO. SIMMC 0109018C3
E1
Microwave Oven
Specifications:
Power Source:
Power Requirement:
Output(IEC705-88):
Microwave Frequency:
Timer:
Outside Dimensions:
Oven Cavity Dimensions:
Weight:
Output power: IEC705-88 Test Procedure
Specifications subject to change without notice.
Specifications:
Models:
240V AC Single Phase, 50Hz ................ For KNQ Models
220V AC Single Phase, 50Hz ................ For KKE, RPE, ZPE Models
220V AC Single Phase, 50/60Hz ........... For SNM Models
220V AC Single Phase, 60Hz ................ For RPK Models
*2450MHz
*99 min. 99 sec.
*20”(518mm)(W) x 16”(407mm)(D) x 11”(301mm)(H)
*14”(375mm)(W) x 15”(386mm)(D) x 8”(225mm)(H)
*26.5 lbs. (12.0kg)
NN-S651WF
1050W
1000W
1150W
1100W
NN-S541WF
MODELS
NN-S651WF
NN-S541WF
KKE KNQ SNM ZPE RPE RPK
WARNING
CONTENTS
     (Page)
(Page)
- 2 -
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE EXPOSURE
TO EXCESSIVE MICROWAVE ENERGY
(A) Do not operate or allow the oven to be operated with the
door open.
(B)  Make the following safety checks on all ovens to be serviced
before activating the magnetron or other microwave source,
and make repairs as necessary:
(1) Interlock operation
(2) Proper door closing
(3) Seal and sealing surfaces (arcing, wear, and other
damage)
(4) Damage to or loosening of hinges and latches.
(5) Evidence of dropping or abuse
(C) Before turning on microwave power for any service test or
inspection within the microwave generating compartments,
check the magnetron, waveguide or transmission line, and
cavity for proper alignment, integrity and connections.
(D) Any defective or misadjusted components in the interlock,
monitor, door seal, and microwave generation and trans-
mission systems shall be repaired, replaced, or adjusted
by procedures described in this manual before the oven is
released to the owner.
(E) A microwave leakage check to verify compliance with the
Federal Performance Standard should be performed on
each oven prior to release to the owner.
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.  It does not
contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians.  Any attempt to service or repair
the product or products dealt with in this service information by anyone else could result in serious injury or death.
1. This product should be serviced only by trained, qualified personnel.
2. Check for radiation leakage before and after every servicing according to the “procedure for measuring radiation leakage.”
3. If the unit cannot be repaired on site, advise the customer not to use until unit is repaired.
4. There are special components used in the microwave oven which are important for safety. These parts are marked with
a      on the replacement parts list. It is essential that these critical parts should be replaced only with the manufacture’s
specified parts to prevent microwave leakage, shock, fire, or other hazards. Do not modify the orginal design.
This service manual covers products for following markets.
When troubleshooting or replacing parts, please refer to the country/area identifications shown below for your
applicable product specification.
KKE .......................................... For UAE, Egypt, Iran
KNQ ......................................... For Kuwait, Doha, Qatar, Oman, Bahrain, Pakistan
SNM ......................................... For Saudi Arabia
RPE .......................................... For Peru
RPK .......................................... For Chile
ZPE .......................................... For CLS Countries
FEATURE CHART ............................................................................... 4
CONTROL PANEL ............................................................................... 4
OPERATION AND DIGITAL PROGRAMMER
CIRCUIT TEST PROCEDURE ............................................................ 5
SCHEMATIC DIAGRAMS .................................................................... 7
DESCRIPTION OF OPERATING SEQUENCE ................................... 9
CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING ......... 10
DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE ........... 12
COMPONENT TEST PROCEDURE .................................................... 15
MEASUREMENTS AND ADJUSTMENTS ........................................... 16
TROUBLESHOOTING GUIDE ............................................................ 17
EXPLODED VIEW AND PARTS LIST .................................................. 21
SCHEMATIC DIAGRAM &
PARTS LIST OF DIGITAL PROGRAMMER CIRCUIT ......................... 26
!
!
DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE (HOT/LIVE) OF THE INVERTER POWER SUPPLY 
(U)
INVERTER WARNING
This Inverter board looks like a regular PCB.  However, this PCB drives the magnetron tube with extremely high voltage
and high current.
IT HAS:   1.
Very high voltage and high current circuits.
It functions the same as the high voltage transformer and high voltage capacitor in ordinary microwave ovens.
2.
Aluminum heat sink is energized with very high voltages and high heat energy.
3.
Very high voltage may remain in circuitry even when oven is off.  High voltage may remain in the capacitors
on the board.
DO NOT:
1.
Do not touch circuitry because it has very hot (high voltage) circuitry.  Even when replacing board, extreme
care should be taken to avoid possible electric shock hazards.  High voltage may remain in circuit.
2.
Do not touch aluminum heat sink because it is very hot in high voltage and also very hot in high heat energy.
3.
Do not try to adjust or tamper with preset volume on the Inverter board because it is very dangerous to
adjust without proper test equipment.
4.
Do not test oven while Inverter grounding plate or screws are loose.  It is very dangerous to operate H.V.
Inverter Circuit (U) with loose mounting screws or if improperly grounded.
5.
For USA only:
Do not try to repair Inverter PCB because it is very dangerous to repair it.  Replace as whole High Voltage
Inverter Circuit unit and return fully re-packed with original shipping box and shipping materials.
INVERTER POWER SUPPLY
- 3 -
*
*
*
*
*
HEAT SINK
(RECTIFIER BRIDGE)
CHOKE COIL
CURRENT
TRANSFORMER
SAND BAR
RESISTOR
HIGH VOLTAGE
TRANSFORMER
PCB
FILM CAPACITORS
VARISTOR
PRIMARY WINDINGS
SECONDARY
WINDINGS
HIGH VOLTAGE
DIODES
DO NOT TOUCH
NEW H.V.
FEATURE CHART
- 4 -
CONTROL PANEL
NN-S651WF
14. Start Pad
One tap allows oven to begin functioning. If
door is opened or STOP/RESET Pad is
pressed once during oven operation, START
Pad must again be pressed to restart oven.
15.Stop/Reset Pad
Before cooking: One tap clears your
instructions.
During cooking: One tap temporarily stops the
cooking process. Another tap cancels all
your instructions and time of day or colon
appears on the display window.
FEATURE
Five Stage Cooking
Inverter Turbo Defrost
Auto Reheat
Inverter Auto Cook
Timer
Digital Clock
MODEL
NN-S651WF
NN-S541WF
1
2
4
5
7
6
9
14
15
3
8
/
1
5
11
10
7
6
3
8
1
2
4
5
7
6
9
14
15
3
8
12
13
14
15
1. Display Windows
2. Micro Power Pad
3. Auto Reheat Pad
4. Time Pads
5. Turbo Defrost Pads
6. Timer Pad
7. Clock Pad
8. Auto Cooking Pads
9. Recipe Store Pad
10. Popcorn Pad
11. Number Pads
12. Power Level Pad
13. Quick Min Pad
NN-S541WF
Page of 28
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Here you can read online and download Panasonic NN-S651WF / NN-S541WF Service Manual in PDF. NN-S651WF / NN-S541WF service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic NN-S651WF / NN-S541WF Home Appliance. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.