Panasonic NN-CD989S User manual

© Panasonic Corporation 2010 Unauthorized copy-
ing and distribution is a violation of law.
ORDER NO. MOD1002311AE
Microwave Oven
Model No. NN-CD989S
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 2
2 Warning -------------------------------------------------------------- 3
3 Specifications ----------------------------------------------------- 4
4 Location of Controls and Components ------------------- 5
5 Test Mode ----------------------------------------------------------- 7
6 Service Mode ------------------------------------------------------ 8
7 Disassembly and Assembly Instructions ---------------10
8 Schematic Diagram -------------------------------------------- 12
9 Exploded View and Replacement Parts List ----------- 13
Please file and use this manual together with the service manual for Model No.NN-C980B(Order
No.MOD0003234C1).

2
1 Safety Precautions
WARNING
1. This product should be serviced only by trained qualitied personnel.
2. Though this product has been manufactured in compliance with:”Federal Performance Standard 21 CFR Subchapter
J”(D.H.H.S.):U.S.A.models
It is very important all repairs should be made in accordance with procedfures described in this manual to avoid being
exposed excessive microwave radiation.
3. Check for radiation leakage before and after every servicing according to the “procedure for measuring radiation leakege”.
4. If the unit cannot be repaired on site,advise the customer not to use until unit be repaired.
5. Any serviceman who learns of any accident pertaining to microwave radiation leakage includng the oven operating with open
door should immediately notify the appropriate address listed below and Center for Devices and Radiological Health,DHHS
IN U.S.A. Panasonic Service and Technology Company
(PSTC) 50 Meadowland Parkway,
Secaucus, New Jersey 07094
Attention:Technical Service Division.
[phone]
6. 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 with manufacturer’s speci-
fied parts to prevent microwave leakage, shock, fire, or other hazards, do not modify the original design.

3
2Warning

4
3 Specifications
APH/RPH
Power Source: 120V AC, 60Hz
Power Requirement: Microwave 1,560 W
Heater 1,500 W
Output: Microwave 1,100 W : Full Power (IEC 705-88)
Heater 1,400 W
Microwave Frequency: 2,450 MHz
Timer: Microwave 1 hour 30min. (30min. for High power)
Heater 9 hours
Outside Dimensions: 14-13/16”(H) X 23-7/8”(W) X 19-5/16”(D)
376 mm(H) X 606 mm(W) X 491 mm(D)
Oven Cavity Dimensions: 9-1/2”(H) X 16-1/4”(W) X 16-13/16”(D)
242 mm(H) X 412 mm(W) X 426 mm(D)
Weight: Appro x.21kg
PbF: This Produt with PbF
Specitications subject to change without notice.

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4 Location of Controls and Components
4.1. CONTROL PANEL

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4.2. OPERATION GUIDE
The display defaults to English,LB-F,and Operation Guide On.
If you desire another option,see below for instructions.
A change in language or measurement must be chosen directly after plugging in the oven.
•LANGUAGE CHOICE
•OPERATION GUIDE ON/OFF
•LB-F/KG-C CHOICE
OPERATION GUIDE helps you program your oven by prompting you with the next step.
When you become familiar with your oven, the Operation Guide can be turned off.
Press More/Less Button Choice
－ENGLISH
once FRANCAIS
twice ESPANOL
Press Timer Button Choice
－ON
4 times OFF
4 times ON
Press Start Button Choice
－LB-F
once KG-C

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5 Test Mode
5.1. COMPONENT TEST PROCEDURE
5.1.1. Humidity Sensor and Digital Programmer Circuit
In order to determine if the humidity sensor fanction of the digital programmer circuit is in
working order or not, do the following test
1. Place a water load in the oven.
2. Press "Sensor Reheat"button.
3. Press "Start" button.
4. Humidity sensor detects steam about 1 to 4 minutes after the start button is pressed.
5. T1 time cooking automatically switches to remaining cooking time(T2).
6. The remaining cooking time appears in display window.
If following cooking time appears, humidity sensor fanction is normal.
T1 TIME T2 TIME(Remaining cooking time)
1 Min. ~ 4 Min. 30 Sec. ~ 2 Min.

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6 Service Mode
6.1. OPERATION AND DIGITAL PROGRAMMER CIRCUIT
TEST PROCEDURE

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6.2. SENSOR COOKING

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7 Disassembly and Assembly Instructions
7.1. CAUTION WHEN REPLACING INVERTER PCB
1. Remove 2 high voltage lead wires from magnetron.
2. Remove 2 lead wires from inverter PCB.
3. Remove 1 screw holding air guide.
4. Remove 2 screws holding noise filter from bottom.
5. Remove 2 screws holding inverter bracket, and slide it left to take it out from oven chassis.
6. Remove 1 screw holding inverter PCB from bottom.
7. Remove 4 screws holding inverter PCB.
8. Remove inverter PCB from its bracket by releasing catch hooks.
9. Remove CN703 hausing connector from the inverter PCB.
10. When re-installing it, make sure to place grounding plate in its place.
Missing grounding is very danger.