Panasonic NN-9509 User manual

CNN-e500 | OT
[NN-9809 pes ae rea
[ NN-9859
DIMENSIONS
Specifications
oor NO. a.
Manual
Microwave Oven
(CANADA
©
Power.
Source
:
120
V
AC
Single
Phase
60
Hz
Power
Requirement
:
Microwave
:
1,400
W
(12.2
A)
Heater : 1,500 W (12.5 A)
Output
:
Microwave
:
700
W
(Full
Power)
» Heater : 1,400 W
__Oscillation
Frequency
:
2,450
MHz
=
~
Timer
:
;
99
min.
99
sec./9
hr.
99
min.
:
Outside
Dimensions:
23-7/8"
(W)
X
18-7/8"
(D)
X
14-13/16"
(H)
606
mm
(W)
X
481
mm
(D)
X
376
mm
(H)
Oven
Cavity
Dimensions
:
16-1/4”
(W)
X
16-13/16"
(D)
X
9-1/2”
(H)
;
412
mm
(W)
X
426
mm
(D)
X
242
mm
(H)
Weight
:
=
NN-9509/NN-9809
APH-+---+
53 Ibs (24.1 kg)
NN-9859 APH, NN-9809/NN-9859 CPH::-59 Ibs (26.9 kg
Specifications subject to change without notice.
Matsushita Services Company Panasonic Sales Company,
Division of Matsushita Electric Division of Matsushita Electric
| i
; Corporation of America of Puerto Rico, Inc.
50 Meadowland Parkway, San Gabriel industrial Park
, ® Secaucus, New Jersey 07094 65th Infantry Ave. Km.9.5
Carolina, P.R. 00630
Copyright©
1989
by
Matsushita
Electric
Corporation
of
America,
All
rights
reserved.
Matsushita Electric
of Canada Limited
5770 Ambler Drive, Mississauga
Ontario, L4W 2T3
RO I

NN-9809,
NN-9859,
NN-9509
MQss9gW,
MQ8869W
: SUSE g ~ WARNING
1. This pradaet should be Benibed ee by trained qualified personnel.
‘2. Though this product has been manufactured in compliance with:
i ob Performance Standard 21 CFR Subchapter J” (D.H.H.S.): U.S.A. models
i. “Radiation Emitting Devices Act” (NHW): Canadian models
“it is-very important all repairs should be made in accordance with procedures described in this manual to avoid being
exposed to. excessive microwave radiation.
"3. Check for radiation leakage before and after every servicing according to the “procedure for measuring radiation leakage”.
4, lf the unit cannot be répaired 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 including 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. Matsushita Services Company IN PUERTO RICO PSG
(MSC) Division of Matsushita Electric (PSC) San Gabriel Industrial Park
Corporation of America 65th Infantry Ave. Km.9.5
50 Meadowland Parkway, Carolina, Puerto Rico 00630
Secaucus, New Jersey 07094 [phone]
Attention: Engineering Support Division. IN CANADA Matsushita Electric of Canada Limited
(201) S48-(0S0 sage ae aise (MELCA). 2 5770. Ambler Drive, Mississauga,
fe hac arr ieee ae oes ve” Ontario; LaweTs
8) 624-5010)”
6. There are special cofnpanstits used in ‘the microwave oven "whieh: are important for safety. These parts are marked with a
ZX on the replacement parts list. It is essential that these critical: parts should: be replaced with manufacturers specified
parts to prevent microwave. leakeae,, ‘shock fire, ( hazard Do not modify the Original design.
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE EXPOSURE
TO EXCESSIVE MICROWAVE ENERGY
(A) Do not operate or allow the oven © be ‘operated ith 1 compartments, check the phagnatran: waveguide ot or
the door open. ees - transmission. line, and. cavity for proper alignment,
(B) Make the following safety checks on all ovens to be. integrity and connections.
serviced before activating the magnetron or: other (D) Any defective or misadjusted components in the
microwave source, and make repairs as necessary: interlock, monitor, door seal, and microwave gen-
(1) Interlock operation eration and transmission systems shall be repaired,
(2) Proper door closing replaced, or adjusted by procedures described in
(3) Seal and sealing surfaces (arcing, wear, and this manual before the oven is released’ to. the:
other damage) owner.
(4) Damage to or loosening of hinges and latches. (E) A microwave leakage check to verify compliance
(5) Evidence of dropping or abuse with the Federal Performance. Standard should be
(C) Before turning on microwave power for any service performed on each oven prior to release to the
test or inspection within the microwave generating owner.
CONTENTS
age)
FEATURE CHART 3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING: ai
CONTROL PANEL *=""° oe ssh Welsh be conedoeoseveserte ‘ee velieeca'e gandes eseatGsevendcadde 4 DISASSEMBLY AND PARTS REPLACEMENT PROGEDURE --------+---+- 15
OPERATION
AND
DIGITAL
PROGRAMMER
COMPONENT
TEST
PROCEDURE®***++s--sesrersressteerteeeeeverens
vesereeees
20
CIRCUIT TEST PROCEDURE SabduvisGededicds Swsivaderecteecesscensseaseasveesevens cee MEASUREMENTS AND ADJUSTMENTS <icretecetetere sete ceteresserneeenereeseres 90
SCHEMATIC DIAGRAM : ; sechgeetces PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE -: 23 °
DESCRIPTION OF OPERATING SEQUENCE oivvvtseeresesttteeeeeeserteeeets +10 TROUBLESHOOTING GUIDE «ee fan cina nd ce dbeucede dues cbevederecosvecedsectees 24
EXPLODED VIEW AND PARTS LIST ode vedeeds Meee iasidesbaeccweatenscds 28
SCHEMATIC DIAGRAM & PARTS LIST OF DIGITAL ‘
PROGRAMMER CIRCUIT -- aa aceee thao een eens nneeeenes 33

NN-9809, NN-9859, NN-9509
_MaQsse9w, MQ8869W
FEATURE CHART (NN models)
NN-9809, NN-9859
FEATURE
CYCLICDEFROST (ti(i‘isé~™C
3-STAGE COOKING
AUTO SENSOR COOK
AUTO SENSOR REHEAT
AUTO WEIGHT DEFROST Hos 4
AUTO REHEAT ae ee
AUTO WEIGHT COMBINATION
COMBINATION (TIME COOKING)
BAKING (AUTO PREHEATING)
BROILING (AUTO PREHEATING)
BROILING (TIME COOKING) .__.
AUTOSTART
STAND/TIMER me
FEATURE CHART (MQ models)
MQss99w MQ8869W
TIMER/STAND
RECIPE MEMORY

NN-=9809,
NN-9859,
NN=
9509
MQss9oW,
MQ8869W
-
wy
..
CONTROL
PANEL
Control Peearoe ni ai rin tnt tt Q ce RUE ALARM :
NN-9859/NN-9809
Controls with Auto Count-Up Feature*
Display Window Auto Sensor Cook Pad*
Time Pads* @ Stop/Reset Pad*
Power Pad* Door Release Button
Bake Pad* @ Indicator Lights
Broil Pad A. Start/Clock Pad
Auto Weight Combination Pad* Stand/Timer Pad
1.0 Ib/0.1 Ib Pads* Combination Pad*
Cooking Guide Auto Weight Defrost Pad
©8OO©OOOO
NN-9509
Auto Sensor Reheat Pads
Doneness Control Pad
More/Less Pad
Start Pad
Auto Reheat Control Pads*
Memory Recipe Pads
(including Popcorn Pad)
Control Pearrel iti tcninin in nt gv ben 0 0 AE
MQssg99
if fu ‘stants
i STAKO ‘clock
ee;
Controls with Auto Count-Up Feature*
@ Display Window Automatic Weight
@ Time Pads* Combination Pad*
© Power Pad* © 1.0 Pound Pad*
@ Convection Pad* @ Timer/Stand Pad
© Broil Pad @ Hold/Clear Pad
© Humidity Sensor Cook @ Recipe Memory Pad
Pad* @® Combination Pad*
@ Cooking Guide @ Custom Cook Pad
MQ8869
© Humidity Sensor Reheat
Pad*
@ Automatic Weight
Defrost Pad
@ 0.1 Pound Pad*
@® A. Start/Clock Pad
® Start Pad
@ Programmed Reheat Pad

NN-9809, NN-9859, NN-9509
MaQssgew, MQ8869W Ne
OPERATION
AND
DIGITAL
PROGRAMMER
CIRCUIT
TEST
PROCEDURE
1. To Set Clock
OPERATION
1.
Plug
the
power
supply
cord
into
wail
receptacie.:
i"
: . < DISPLAY... -
OPERATION “" “ DISPLAY
7. When first stage cooking time has can.
elapsed, oven automatically switches fo
2nd stage. cooking.
8. When 2nd stage cooking time has
elapsed, oven beeps 5 times and shuts
off.
2. Tap pad.
3. Auto esa Defrost (NN models)
"3.
Enter
time
of
day
(TOD)
by
tapping
appropriate pads.
4, Tap pad.
TOD
has
now
been
registered
into
the
digital
programmer
circuit
and
will
count
up
by
minutes.
2. Set the weight for 3 pounds by tapping
(Ib) pad three times.
2.
Time
Cooking
For
Two
Stage
:
OPERATION
DISPLAY
1.
Place
a
‘weter
load
in
the
oven.
|
3, Tap [Start] Pad. puto’
vaN
~,
2.
Tap
(Powetl
pad
once
for
High
p
pow-
er.
(1st
stage)
4. Tap |Stop/Reset Pad twice TOD reappears in the display.
Oven shuts off. window.
3, Set for 5 seconds by tapping
pad.
4.
Tap
pad.3
times
for
Medium,
|
power.
ek
eR
nd
stage)
5. Set for 10 seconds by tapping
pad.
6. -Tap[Start| pad.

NN=9809,
NN-9859,
NNe
9509
MQssg9W,
MQ8869W
.
4.
Automatic
Weight
Defrost
me
models)
«
OPERATION
oy
:
.
DISPLAY
1.
ali
WEIGHT
DEFROST]
Pad
2. Set the weight for 3 pounds by tapping
(LB) pad three times.
3, Tap [START] Pad.
4, Tap | HOLD/CLEAR Pad twice TOD reappears in the display
Oveni shuts off. window.
5. Auto. Reheat aco
2. Tap [Start] Pad.
3. When cooking time has elapsed. ¢ TOD reappears in the display
* Oven beeps five times and shuts off. window.
6. Programmed Reheat (MQ8869W)
1. Tap [REHEAT] Pad 4 times.
2. Tap |START| Pad.
3, When cooking time has elapsed. * TOD reappears in the display
« Oven beeps five times and shuts off. window.
7. Auto Sensor Cooking (NN-9809, NN-9859): ... ,
NOTE: Make sure. that the outer panel is. installed. before Auto Sensor
Cooking Test, since Auto Sensor function does Not operate prop-
erly without the outer panel.
1. Pour 150 + » 1860 ast 12 ozs) of | COVER THE TOP OF THE
room temperature water in a beaker, | BEAKER WITH PLASTIC WRAP
securely cover the top of the beaker
with plastic wrap and piace the beaker
in the center of the oven.
. Tap Auto Sensor | Cook] Pad 6 times.
Tap Pad.
. The humidity sensor detects steam ab-
out 2 to 5 minutes after the Start Pad is
tapped.
Auto Sensor Cooking (T1) automatically
switches to time cooking (T2). ...
“A6” disappears with beep sounds and
the remainder of cooking time appears
Vi
- via,
‘
in display window. =AUTO- = = COOK-
NOTE: Cooking time will vary depend- a 4
ing on the water temperature, ha 4
the shape of beaker or the
power source voltage.
NOTE: K factor for A6 program is 0.1.
NOTE: If 9 to 27 (9 seconds to 27
seconds) appears, AUTO
SENSOR FUNCTION is
_ formal.
. When the balance of cooking time has ¢ TOD reappears in the 6 Hleotay
elapsed, oven stops and beeps five window.
times.
8. Humidity Sensor Cooking (MQ8899W) ©
NOTE: Make sure that the outer panel is installed before Hu idity Sen-
sor Cooking Test, since Humidity Sensor function doés not oper-
ate properly, without the outer panel.
OPERATION ~ . DISPLAY
1. Pour 150 + 15cc (4.5 + 1/2 ozs) of COVER THE TQ! OF THE
i6om temperature water in a beaker, A V
securely cover the top of the beaker
with plastic wrap-afid place the beaker
in the center of the oven.
2. Tap HUMIDITY SENSOR }COOK
Pad 8 times.

NN-9809, NN-9859, NN-9509
MQ88s99W, MQ8869W
OPERATION
DISPLAY
10.
Convection
Cooking
with
Preheat
(MQ
models)
3, Tap [START] Pad.
4 : 1. Tap CONVEG pad twice.
4.
The
humidity
sensor
detects
steam
ab-
out
2
to
5
minutes
after
the
START.Pad
is
tapped.
Lobes
Humidity
Sensor
Gooking
(T1)
auto-
~SENSOR-
matically
switches
to.time
cookirig
(T2),
“A8” disappears with béep sounds and
the remainder of cooking time appears
in display window.
NOTE:
Cooking
time
will
vary
depend-
SE
,
SOOK.
ing
on
the
water
temperature,
+
:
bay']
4
. Tap [START] pad.
3, When preheating is completed, oven
beeps 3.times.
“p” begins to blink.
the
shape
of
beaker
or
the
4
power
source
voltage.
NOTE:
K
factor
for
A8
program
is
0.1.
..|
NOTE:
If
9
to
27
(@
seconds
fo
27
seconds)
appears,
AUTO
SENSOR
FUNCTION
is
normal.
. After completion of preheating, be sure
to open the door.
.
When
thie
balance
of
cooking
time
has
«
TOD
reappears
in
the
display
elapsed,
oven
stops
and
beeps
five
window.
times.
. Close the door and set convection
cooking time for 2 minutes.
9.
Bake
Cooking
with
Preheat
(NN
models)
OPERATION
;
DISPLAY
1. Tap pad twice.
. Tap [START] pad.
. Tap pad.
. When preheating is completed, oven
beeps 3 times.
ép” begins td blink.
. After completion of preheating, be sure
to open the door. ;
.
Close
the
door
and
set
bake’
cooking
:
time
for
2
minutes.
. Tap pad.

NN-9809,
NN=9859,
NN=9509
MagsgoW,
MQ8869W
SCHEMATIC DIAGRAM
NN-9509/NN-9809/NN-9859
APH
NOTE:
Door
is
closed,
ink
Unit
is
not
operated.
WHITE
BROWN /WHITE
BROWN / WHITE
WHITE
HUMIDITY SENSOR
F z .
IGH VOLTAGE
ER
LOW VOLTAGE.
TRANSFORMER
.
HUMIDITY
SENSOR
”
5-012
OVEN
TEMP
SENSOR
ne
(NN-9809,NN-9859)
(OVEN THERMISTOR) (S-545 APH)
NN-9809/NN-9859
CPH
NOTE:
Door
is
closed.
Unit
Is
not
operated.
& Ground
WHITE
wr
Chassis
BROWN/ WHITE
BROWN/WHITE
WHITE
HUMIDITY SENSOR
6900000000000
HUMIDITY SENSOR 53-013
OVEN TEMP SENSOR (NN~9809,NN-9859)
(OVEN THERMISTOR) (S-546 CPH)
MQss69W/MQ8899W
AQH
NOTE:
Door
is
closed.
Unit is not operated.
CUTOUT & Ground
(MAGNETRON)
WHITE
BROWN/ WHITE
BROWN/ WHITE
WHITE
HUMIDITY SENSOR
FORMER
; HUMIDITY SENSOR 53-014
' {OVEN TEMP SENSOR "" (maqssssw)
+
(OVEN
THERMISTOR)
or
(S-545
AQH)

NN-=9809, NN-9859, NN-9509
Masagew, MQ8869W
SCHEMATIC DIAGRAM
MQss99W
CQH
NOTE:
Door
is
closed.
:
Unit
Is
not
operated.
de
Ground
WHITE
ar
Chassis
BROWN/ WHITE
BROWN / WHITE
WHITE
HUMIDITY SENSOR
CUTOUT
(MAGNETRON)
FUSE
15A
1000000000000 Jo
VARISTOR ied POWER {SECONDARY
laa) RELAY D TATCH
SWITCH
PP RNase
DIGITAL PROGRAMMER CIRCUIT LeGme HUMIDITY SENSOR 53-015
OVEN TEMP SENSOR A card
(OVEN THERMISTOR) A (S-546 CQH)
WIRING DIAGRAM
SHORT SWITCH
(BOTTOM)
SECONDARY LATCH
SWITCH C
Coasts.)
198]
ime
w
lige
NOTE: #*When replacing, check the lead a eee
wire colour as shown. BLUE
)
*Colours
shown
by
(_
)
indicate
|"
_BR__|
BROWN
colours of
lead
wire
connector
|
—¥
WHITE
housing. an YELLOW
SHORT SWITCH | GR |
(BOTTOM) 8

NN-9809, NN-9859, NN-9509
MQ8sg9W, MQ8869W
DESCRIPTION OF OPERATING SEQUENCE
1. Variable power cooking control
The coil of power relay B (RY2) is energized intermittently by the digital
programmer circuit, when the oven is set at any power selection
except for High power position. The digital programmer circuit controls
the ON-OFF tine of power relay B contacts in order to vary the output
power of the microwave oven from “Warm” to “High” power. One
complete ON and OFF cycle of power relay B is 22 seconds.
The relation between indications on the control panel and the output of
the microwave oven is as stiown in table.
NOTE: The ON/OFF time ratio does not correspond with the percentage
of microwave power since approximately 2 seconds are required
for heating of magnetron filament.
2. Cyclic defrost/MULTI-STAGE DEFROST
When defrost power and defrosting time is selected and Start pad is
touched:
(A) The digital programmer circuit (DPC) divides the total defrosting time
into 8 equal periods, consisting of four defrosting periods, each
followed by a standing period.
(B) During defrosting power periods, power relay B is energized for 9
"seconds and de-energized for 13 seconds by DPC.
(C) During Standing periods, power rélay B is always open resulting in no
microwave power.
NOTE: Defrost time selected is converted into seconds by the DPC but
display will show selected time in minutes and seconds as
programmed. The total number of seconds is divided into 8 time
periods. The remainder (seconds not equally divisible by 8) are
added to the fast standing time period.
Example: lf Defrosting time is selected for 5 minutes, each operating
period will be as follows :
5 minutes = 300 seconds
300/8 = 37 and remainder is 4 seconds.
The 4 seconds is added to the last time period.
NOTE: When defrosting time is selected for not more than 7 seconds, the
power'relay B will not be energized at all.
3. Auto/Automatic weight defrost, Auto/Programmed
reheat control
When those Auto Control feature is.selected and the Start Pad is tapped:
(A) The digital programmer circuit determines the power level and
cooking time to complete cooking and indicates the operating state in
the display window.
Table shows the corresponding cooking times for respective serving
by categories.
(B) When cooking time in the display window has elapsed, the oven turns
off automatically by a controll signal from the digital programmer circuit.
ON-OFF TIME OF
POWER RELAY B (RY2)
OUTPUT
POWER(W)
APPROX.
POWER SETTING
es
a
eee
ne |
a
DEFROST 110W of cyclic defrost
5 MIN (300 SEC)
1ST
DEFROSTING
(37S)
9$)13S 9S ; 6S
1ST 2ND
STANDING DEFROSTING
(378) (378)
9$)15S )9S , 6S
2ND
STANDING
(378)
ALL OFF
Auto/Automatic Weight Defrost
Auto Reheat —
eee
| 16 sec. | sec, 1 min. | 1 min. 30 sec. | sec, | 8 min, 30 sec. | min. 30 sec.
Programmed Reheat (MQ8869W)
oe ae
—10—-—

4.
Baking/Convection
cooking
control
The
digital
prograrimer
circuit
controls
the
ON-OFF
time
of
the
heater
in
order
to
control
oven
Cavity
temperature.
7
(A).
After
the
start
pad
is
tapped.with
the
desired
.baking/convection
program
set,
an
18V
DC
signal
comes
out
of
the
digital
programmer
circuit:and
is
applied
to
coil
of
power
relay
C
(RY4).
(B)
When
the
contacts
of
power
relay
C
close,
power
source
voltage
(120V
AC)
is
applied
to
the
heater
and
the
heater
turns
on.
(C)
When
the
oven
temperature
reaches
the
set
temperature,
the
digital
programmer
circuit
senses
the
temperature
through
oven
temp
sen-
sor
atid
stops
supplying
an
18V
DC
signal
to
the
coil
of
power
relay
C
and
the
heater
turns
off.
a
(D)
After
the
heater
turns
off,
the
oven
temperature
will
continue
increas-
ing
a
while
and
then
decrease
as
shown
in
Figure.
When
the
oven
tamperature
drops
below
the
set
temperature,
the
digital
programmer
circuit
senses
the
signal
and
starts
supplying
an
18V
DC
signal
to
the
€oil.of
power
relay
again;
She
yh
We
:
eet
NOTE:
When
Broil
feature
is
selected,
oven
temperature
is
determined
automatically
as
shown
in
Figure.
5.
Combination
cooking
control
-Combination
cooking
is
accomplished
by
microwave
and
baking-
/convection
cooking
being
done
alternately
during
one
combination
cooking
cycle.
One
combination
cooking
cycle
is
22
seconds.
(A)
During
combination
cooking,
the
digital
programmer
circuit
controls
ON-OFF
time
of
both
power
relay
B
and
C
as
shown
in
Figure.
(B)
When
the
power
relay
B
(RY2)
is
turned
on,
heater
turns
off
and
after
the
power
relay
B
turns
off,
power
relay
C
turns
on.
NOTE
1:
Note
that
the
heater
may
not
be
on
during
a
heater
on
period
if
the
preprogrammed
oven
temperature
has
been
reached.
This
is
due
to
the
fact
that
the
oven
is
keeping
the
preprogrammed
oven
temperature
constant,
so
of
course
the
heater
will
only
be
on
when
it
is
needed
and
off
when
it
is
not
needed.
NOTE
2:
As
for
temperatures
of
combination
cooking
for
convection,
the
temperatures
by
each
program
are
preprogrammed
in
the
mic-
roprocessor
as
shown
in
Figure.
NN-9809, NN-9859, NN=9509
MaQss99W, MQ8869W
Baking/Convection Cooking
START SELECTED. OVEN. TEMP
' !
OVEN TEMP
HEATER
Broil Cooking
CATEGORY OVEN TEMP ;
ve
Combination Cooking
POWER
RELAY C
(HEATER)
POWER
RELAY B
(MICROWAVE)
Combination Cooking
MICROWAVE HEATER
8/22 SEC 14/22 SEC 275F
8/22 SEC 14/22 SEC 300°F
CATEGORY OVEN TEMP
8/22 SEC 14/22 SEC
8/22 SEC 14/22 SEC 375°F

NN-9809, NN-9859, NN-9509
‘MQssg9Ww, MQ8869W
6. Auto/Automatic weight combination cooking conirol
When the Auto/AUtomatic Weight Control, Coribination Cooking fea-
ture is selected by tapping the appropriate key pads and Start pad is
tapped. ‘
(A) The digital programmer circuit determines the power level, oven
temperature and combination cooking time to complete combination
cooking and indicates the operating ‘state in the display window.
Table shows the combination cooking times for respective weights.
(B) When the combination cooking time in the display window has
'” @lapsed, the oven turns off automatically by the controlled signal from
the digital programmer circuit.
7. Auto/Humidity sensor cooking
(NN-9809, NN-9859, MQ8899W)
Auto/Humidity sensor cooking is a revolutionary way to cook by micro-
wave without setting a power level or selecting a time.
All that is necessary is to select an Auto/Humidity sensor Program
before starting to cook.
Understanding of Cooking
As food cooks, a certain amount of steam is produced. If the food is
covered, this steam builds up and eventually escapes from the con-
tainer. In Auto/Humidity Sensor Cooking, a carefully designed instru-
ment, called the humidity sensor element, senses this escape of
steam. Then, based upon the Auto/Humidity Sensor Program
selected, the unit will automatically determine the correct power level
and the proper length of time it will take to cook the food.
NOTE: Auto/Humidity Sensor Cooking is successful with the foods and
recipes found in the Auto/Humidity Sensor Cooking Guide. Be-
cause of the vast differences in food composition, items not men-
tioned in the Cooking Guide should be prepared in the micro-
wave oven using power select and time features. Please consult
Variable Power Microwave Cookbook. for. procedures.
Explanation of the Auto/Humidity Sensor Cooking process
1) The shaded columns in Figure indicate when the humidity sensor hea-
ter is on.
2) During the 30 second period there is no microwave activity. When
calculating the T2 time by using the formula below, make sure this 30
seconds is subtracted from the TO time.
3) T1 time-----The total amount of time it takes the microwave oven. Dur-
ing this time one of the Auto/Humidity sensor programs. will be.shown
in display.
4)T2 time-----When the steam escapes from the cooking container
placed in the oven, the humidity sensor detects it and the microp-
rocessor calculates the balance of cooking.time. This T2 time is then
shown in the display and begins counting down.
(NN models)
“WEIGHT TOTAL COMBINATION COOKING TIME
SELECTED |CATEGORY 1|CATEGORY 3|CATEGORY 5|CATEGORY 8
1 hour 42 min. 52 rin. 00 see,
=
Pee =
1 hour 26 min.
3 hours 1 2 min.
(MQ models)
WEIGHT _ TOTAL COMBINATION COOKING TIME
seecn| CATEGORY 1[OATEGORY s|CATEGORY E[CATEGORY
18 min. 00 sec. 30 min, wee 24 fie 00 pail
54 min. 00 sec. | 1 hour 30 min. | 1 hour 12 min.
1 hour 30. min. | 2 hours 30 min. = [+ hour 96 min. |
MAGNETRON STEAM
START ON DETECTED
ia TIME} \ 4 Y :
1 30 | 30 | a
'
i t
i}
' SEC. | SEC. TIME 1 30 MIN. !
1S SEC!
iy
t
1
1
i}
'
'
t
REFRESHING

Balance.
of
cooking
time
(T2.time)
The
balance
of
cooking
time
which
is
called.
T2
time,
‘can
be
calcu-
lated
by
the
following
formula.
‘T2
time
(in
sec.)
=T1'time
X
K
factor
NOTE:
Remember,
the
T1
time
starts
after
the
Start
pad
is
tapped:
The
coefficient
K
is
programmed
into
the
microprocessor
memory
and
they
are
listed
in
the
following
tables
along
with
the
P1
and
P2
powers.
NOTE:
When
“More”
or
“Less”
pad
is
selected,
the
K
factor
varies
re-
sulting
in
T2
time
to
be
increased
or
decreased.---NN-9809,
NN-
9859
NOTE:
When
CUSTOM
COOK
pad
is
selected,
the
K
factor
varies
re-
sulting
in
an
increased
or
decreased
T2
time."
‘MQ8899W
Example
of
calculating
the
T2
time
Example
1:
If
the
T1
time
is
measured
to
be
2
minutes
and
40
seconds,
and
the
Auto/Humidity
Sensor
program
selected
is
COOK
1
T2=T1X*K
=
2
min.
and
40
sec.
X
2:5
=
160
sec.
X
2.5
=
400
sec.
=
6
min.
40
sec.
8.
Auto/Humidity
sensor
reheat
(NN-9809,
NN-9859,
MaQss99W)
With
Auto/Humidity
sénsor
reheat,
you
can
accurately
reheat
foods
in
accordance
with
their
current
state
of
preparation.
This
allows
you
to
set
the
oven
to
reheat
either:
1)
Room
temperature
foods,
2)
Refriger-
ated
foods
and
3)
Frozen
foods
at
their
appropriate
power
levels
and
times.
Best
of
all,
Auto
Sensor
automatically
does
it
all
at
the
touch
of
a
button!
NOTE:
The
Auto/Humidity
sensor
reheat,
process
is
same
as
process.
NN-9809, NN-9859, NN-9509
MQ8899W;,, MQ8869W -
Auto Sensor Cook (NN-9809, NN-9659)
K factor
Standard
K factor
Standard
Auto Sensor Reheat (NN-9809, lemons
Category K factor
cs eo
1. Room Temp Foods | HIGH |
Humidity Sensor Reheat (MQ8899W)
Category K factor
Power Power
[icon tonp Feo | wen [wen | o8_|

‘NN-9809, NN-9859, NN-9509
__MQss99W, MQ8869W
CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
Unlike many other applianéés, thie microwavé oven is high-voltage, high- | 5, Avoid inserting nails, wire, etc. through any holes inthe
current
equipment.
Though
it
is
free
from
danger
in
ordinary
use,
extreme
unit
during
operation.
.
“
.
3s
care should be taken during repair.
Never insert a wire, nail.or any other metal object.through the lamp
holes.on the cavity or any other holes or..gaps,. because. such objects
CAUTION may work as.an-antenna and cause microwave leakage.
Servicemen should remove their watches whenever j
working close to or replacing the magnetron.
4. Check the grounding
Do not operate on a 2-wire. extension cord. The. microwave oven is
designed to be used when grounded. It is imperative, therefore, to
make. sure it is grounded properly before beginning repair work.
2. Warning about the electric charge in the high voltage
capacitor
For about 30 seconds after the oven is turned off, an electric charge
remains in the high voltage capacitor.
When replacing of Ghecking parts; remove the’ power plug: from the
outlet and short the terminal of the high voltage capacitor (terminal of
lead wire from diode) to chassis ground with an insulated handie
screwdriver or insulated jumper lead wire to discharge.
WARNING
There is high-voltage present, with high-current
capabilities in the circuits of the high voltage winding
and filament winding of the high voltage transformer. It
is extremely dangerous to work on or near these
circuits with oven energized.
DO NOT measure the voltage in the high voltage
circuit including filament voltage of magnetron.
HIGH. VOLTAGE
CAPACI TOR
Touch chassis side first then short to the high voltage capacitor
terminal.
6. Confirm after repair
WARNING :
nl ee (A) After repair or replacement of parts, make sure that the screws of the
Never touch any circuit wiring with your hand nor with oven, etc. are neither loose nor missing.
an insulated tool during operation. Microwaves might leak if screws are not properly tightened.
(B) Make sure that all electrical connections are tight before inserting the
plug into the wall outlet.
3. When parts must be replaced, remove the power plug (C) Check for microwave energy leakage. (Refer to procedure for
from the outlet. measuring microwave energy leakage).
4. When the 15 Amp fuse is blown due to the operation of
short switch:
WARNING
When the 15 Amp. fuse is blown due to the operation
of short switch, you must replace Primary latch switch
and short switch. For U.S.A. models, also replace
power relay B when the continuity check reads
shorted contacts (1-2).
(A) This is mandatory. Refer to “Adjustments and Measurement” for these
switches.
(B) When replacing the fuse, confirm that it has the appropriate rating for
these models.
(C) When replacing faulty switches, be sure mounting tabs are not bent,
broken or otherwise deficient in their ability to hold the switches.

‘NN-9809, NN-9859, NN-9509
MQ8899W, MQ8869W
DISASSEMBLY
AND
PARTS
REPLACEMENT
PROCEDURE
1. Magnetron
(A)
Discharge
the
high
voltage
capacitor.
(B)
Remove
2
screws
holding
air
guide
A.
(C)
Remove
1
screw
holding
air
guide
B.
(MQ
models)
(D)
Disconnect 2
high
voltage
lead
wires
from
magnetron
filament
termin-
als.
(E)
Remove
4
screws
holding
the
magnetron.
NOTE:
After
replacement
of
the
magnetron,
tighten
mounting
screws
properly
making
sure
there
is
no
gap
between
the
waveguide
and
the
magnetron
to
prevent
microwave
leakage.
CAUTION
When
replacing
the
magnetron,
be
sure
the
antenna
gasket
is
in
place.
CAUTION
When
connecting
2
filament
lead
wires
to
the
mag-
netron
terminals,
be
sure
to
connect
the
lead
wires
in
the
correct
position.
The
lead
wire
of
high
voitage
transformer
should
be
connected
to
“F
terminal”
and
the
lead
wire
from
high
voltage
capacitor
should
be
connected
to
“FA
terminal”.
(NN models)
7
ESCUTCHEON
2.
Digital
programmer
circuit
(DPC)
and
membrane
key
BASE
board.
(NN
models)
—
NOTE:
Be
sure
to
ground
any
static
electric
charge
built
up
on
your
body,
before
handling
the
DPC.
(A)
Disconnect
all
connectors
from
D.P.C.
(B)
Remove
1
screw
holding
escutcheon
base
and
slide:the:escutcheon
base
upward
slightly.
(C)
Release
CN4
connector's
lock
of
DPC
by
pushing
both
levers
to
LOW
VOLTAGE
J]
inside
and
pull
them
upward,
and
remove
flat
cable
of
membrane
key
TRANSFORMER
board.
pe
(D)
Remove
2
screws
holding
DPC.
LJ
'
MEMBRANE
To
replace
membrane
key
board
|
KEY
BOARD
(E)
Remove
escutcheon
bracket
from
escutcheon
base
by
freeing
4
catch
hooks
on
the
escutcheon
base.
(F)
Push
the
upper
part
of
key
board
sheet
(display
window
portion)
from
back
of
escutcheon
base
and
peel
key
board
sheet.
(G)
Peel
off
membrane
key
board
from
escutcheon
base.
NOTE:
1.
The
membrane
key
board
is
attached
to
the
escutcheon.
base
with
double
faced
adhesive
tape.
5
2,
When
installing
new
membrane
key
board,
make.sure.
that
the
surface
of
escutctieon
base
is
cleaned
sufficiently
so
that
any
“problems
(shorted
contacts
or
uneven
surface).can
be
avoided.
board.(MQ
models)
—
APS
NOTE:
Be
sure
to
ground
any
static
electric
charge
built:
up
on
your
body,
before
handling
the
DPC.
;
ESCUTCHEON
(A)
Disconnect
all,connectors
from
D.P.C.
ey
BRACKET
(B)
Remove
2
screw
holding
escutcheon
base
and
slide
the
escutcheon
i
i
f
base
upward
slightly.
(C)
Release
CN4
connectors
lid
and
pull
off
the
flat
cable
of
the
mem-
brane
key
board.
(D)
Remove
4
screws
holding
DPC.
To
replace
membrane
key
board
(E)
Remove
2
screws
holding
escutcheon
bracket
to
the
escutcheon
base.
{F)
Peel
off
the
membrane
key
board
from
the
escutcheon
bracket.
NOTE:
1.
The
membrane
key
board
is
attached
to
the
escutcheon
bracket
with
double
faced
adhesive
tape.
2.
When
installing
new
membrane
key
board,
make
sure
that
the
surface
of
escutcheon
bracket
is
cleaned
sufficiently
so
that
any
problems
(shorted
contacts
or
uneven
surface)
can
be
avoided.
3.
Make
sure
that
new
membrane
key
board
is
aligned
to
the
left
and
lower
edges
of
the
escutcheon
bracket.
3.
Digital
programmer
circuit
(DPC)
and
membrane
key
. CN4
CONNECTOR

NN=9809, NN-9859, NN-9509
—MQssg9W, MQss69W
4.
Low
voltage
transformer
and/or
power
relays
(RY1,
2,
4,
5)
NOTE:
Be
sure
to
ground
any
static
electric
charge
built
up
on
your
body
before handling the DPC.
(A)
Using
solder
wick
or
a
desoldering
tool
and
30W
soldering
iron,
care-
fully
remove
al!
solder
from
the
terminal
pins
of
the
low
voltage
trans-
former
and/or
power
relays.
;
NOTE: Do not use a soldering iron or desoldering tool of more than 30
watts on DPC contacts. :
(B)
With
all
the
terminal
pins
cleaned
and
separated
from
DPC
contacts,
remove
the
defective
transformer/power
relays
and
install
new
trans-
former/power
relays
making
sure
all
terminal
pins
are
inserted
com-
pletely.
Resolder
all
terminal
contacts
carefully.
5, Fan motor and high voltage capacitor (NN models)
(A) Disconnect 2 lead wires from fan motor terminals.
(B) Disconnect 2 lead wires from fuse holder terminals.
(C) Disconnect 4 high voltage lead wires from high voltage capacitor
terminals.
(D) Remove 4 screws holding fan motor and orifice assy and detach the
orifice assy with fan motor from oven assy.
(E) Remove fan blade from the fan motor shaft by pulling it straight out.
(F) Separate the fan motor from the orifice assy by freeing 2 catch hooks
on the orifice assy.
To replace high voltage capacitor
(G) Remove 1 screw holding high voltage capacitor
6. Fan motor and high voltage capacitor (MQ models)
(A) Disconnect 2 lead wires from fan motor terminals.
(B) Disconnect 2 lead wires from fuse holder terminals.
(C) Disconnect 4 high voltage lead wires from high voltage capacitor
terminals. we INE
(D) Disconnect 1 lead wire from thermal cutout terminal.
(E) Remove 1 screw from power supply cord.
(F) Remove 1 screw holding oven reinforcement bracket.
(G) Remove 3 screws holding fan motor bracket and detach the fan motor
bracket with fan motor from oven assy.
(H) Remove fan blade from the fan motor shaft by pulling it straight out.
(1) Remove 2 screws holding the fan motor to the fan motor bracket.
To replace high voltage capacitor
(J) Remove 1 screw holding high voitage capacitor.
(NN models)
ORIFICE ASSY
REMOVE 4 SCREWS
FAN BLADE
HIGH VOLTAGE
CAPACITOR
02-012 _
(MQ models)
FAN MOTOR
BRACKET
FAN MOTOR
BRACKET
7 HV,
H.V. CAPACI TOR
CAPACI TOR

7. Heater
(A)
Remove
fead
wires
from
lead
wire
holders.
(B)
Remove
belt
from
pulleys
of
circulation
fan.
(C)
Remove
2
screws
holding
oven
temp
sensor.
(D)
Remove
2
lead
wires
from
heater
terminals
by
removing
screws.
(E)
Remove
4/6
scréws
holding
the
both
sides
of
heater
unit
and
lift
it
up
carefully.
(F)
Remove
2
spring
nuts
from
heater
terminals.
(G)
Remove
2
screws
holding
heater
supports
and
detach
the
heater.
NN-9809, NN-9859; NN-~9509
MQ8899W, MQ8869W © :
PULLEY OF
CIRCULATION FAN HEATER UNIT
LEAD WIRE QVEN TEMP BELT HEATER
HOLDERS
SENSOR
FAN
MOTOR
SPRING NUTS
HEATER TERMINALS
HEATER SUPPORTS
HEATER CIRCULATION FAN

NN-9809,
NN-9859,
NN-9509
Mass99ow,
MQ8869W
8. Door assembly
(A)
Open
the
door
and
remove
4
screws
holding
door
C.
(B)
Remove
the
door
C
from
door
E
by
carefully
pulling
outward
starting
from
upper
right
hand
corner.
(C)
Remove
door
key
spring
and
remove
3
screws
holding
door
handle.
(MQ
models)
;
(D)
Separate
the
door
A
ftom
the
door
E
by
freeing
8/6
catch
hooks
on
the
door
A.
(E)
Remove
door
key
spring
and
door
key.
(NN
models)
(F)
Remove
door
keys,
door
key
lever,
door
key
spring-and
door
key
pins.
(MQ
models)
rr
After
replacement.
of
the
defective
component
parts
of
the
door,
reas-
semble
it
and
follow:
the
instructions
below
for
proper
installation
and
adjustment
so.as
to
prevent
an
excessive.
microwave
leakage.
(1)
When
mounting.the
door
to
the
oven,
be
sure
to
adjust
the
door
parallel
tothe
bottom
line
of
the
oven
face
plate
by
moving
‘tie
upper
thinge
and
lower
hinge
in
the
direction
necessary
for
proper
align-
ment.
(2)
Adjust
so
that
the
door
has
no
play
between
the
inner
door
surface
and
oven
front
surface.
If
the
door
assembly
is
not
mounted
properly,
microwave
may
leak
from
the
clearance
between
the
door
and
oven.
(3) Perform the microwave leakage test.
9.
Turntable/Antenna
motor
DOOR
KEY
A
(A)
Remove
2
screws
holding
motor
cover.
(B)
Disconnect
2
lead
wires
from
turntable/antenna
motor.
; DOOR KEY
(C)
Remove
2
screws
holding
turntable/antenna
motor.
LEVER
DOOR KEY B
DOOR KEY
SPRING
(NN models)
ANTENNA °
MOTOR
TURNTABLE
TOR
—18—

410.
Floor
shelf
and/or
moving
antenna(MQ
models)
(A)
Bend
metal
cover
which
covers
thie
floor
shelf
removal
opening
located
on
left
side
oven
wall
and
insert
a
phillips
type
screwdriver
or
equivalent
approx.3”
(7.5
cm)
in
shaft
length
in
the
hole.
(B)
Carefully
{ift
up
the
floor
shelf
by
using
the
screwdriver
until
the
floor
shelf
is
lifted
up
over
the
level
of
oven
opening
front.
(C)
Remove
the
floor
shelf:
by
lifting
it
up
from.oven
front.
To
replace
the
moving
antenna.
(D)
Remove
the
moving
antenna
by
simply
lifting
it
up
off
the
antenna
motor
"shaft.
NOTE:
When
replacing
the
moving
antenna,
make
sure
the
plastic
antenna
spacers
are
correctly
in-place.
(E)
When
installing
floor
shelf
in
position,
make
sure
that
front
edge
side
of
the
floor
sheif
is
inserted
in
position
first
then
press
down
the
rear
side.
=49—
NN-9809, NN-9859, NN-9509
MaQssg9eW, MQ8869W
COVER FOR
FLOOR SHELF __
REMOVAL OPENING
FLOOR SHELF
REMOVAL OPENING:
FLOOR SHELF
REMOVAL OPENING
SCREWDRIVER
FLOOR SHELF
MOVING
ANTENNA
ANTENNA SPACERS

NN-9809,
NN-9859,
NN=9509
Mass99w;
MQ886gWw
COMPONENT TEST PROCEDURE
CAUTION
1. High voltage is present at the high voltage terminal
of the high voltage transformer during any cook
cycle. ~ :
2. It is neither Necessary nor advisable to attempt
measurement of the high voltage.
3, Before touching any oven components, or wiring,
always unplug the oven from its power source and
discharge the high voltage capacitor.
FILAMENT
WINDING
“TERMINALS
SECONDARY
WINDING
TERMINALS
em
PRIMARY
WINDING
TERMINALS
Se
a
4. Primary Latch Switch, Secondary (Secondary Latch
Switch and Power relay B) Interlocks.
(A)
Unplug
lead
connectors
to
Power
Relay
B
and
verify
continuity
of
the
power
relay
B
1-2
terminals.
;
(B)
Unplug
lead
connectors
to
Primary
Latch
Switch.and
Secondary
Latch
Switch.
(C)
Test
the
continuity
of
switches
at.door
opened
and
closed
positions
with
ohm
meter
(low
scale).
Norma!
continuity
readings
should
be
as
follows.
RTENNS
[Boor Opened [Boor Giosed |
2. Short Switch & Monitor Circuit
(A)
Unplug
lead
wires
from
H.V.
transformer
primary
terminals.
(B) For CPH/CQH only
make short circuit across the lead wires connected to power relay B
(RY2)
with
temporary
jumper
wire
for
testing.
MAGNETRON
_
FILAMENT
(C)
Connect
test
probes
of
ohm
meter
to
the
disconnected
leads
which
CASE
_
~
TERMINALS
were
connected
to
H.V.
Transformer.
(D)
Test
the
continuity
of
short
switch
with
door
opened
and
closed
01-030
positions
using
lowest
scale
of the
ohm
meter.
Normal
continuity
readings
should
be
as
follows.
Mechanical Models Some Ohm 0Q
See Note
NOTE:
In
this
case,
the
ohm
meter
indicates
some
resistance
of
the
part(s)
such
as
oven
lamp,
blower
fan
motor,
etc.
connected
in
parallel
with
the
monitor
circuit.
3.
High
voitage
transformer
(A) Remove connections from the transformer terminals and check
COOLING
continuity.
(B)
Normal
(cold)
resistance
readings
should
be
as
follows:
Secondary
winding
see
enee
neon eneneeseseseeseascncoscoenes
Approx.
802
~120Q
Filament
winding
-*--
ans
Approx.
0Q
Primary
winding
qhiee
se
cechecsetaddeocbescussheveseceoteens
Approx.
0Q~
12
4. High voltage capacitor
(A)
Check
continuity
of
capacitor
with
meter
on
highest
OHM
scale.
(B)
A.normal
capacitor
will
show
continuity
for
a
short
time,
and
then
itidicate
9MOQ
once
the
capacitor
is
charged.
(C)
A
shorted
capacitor
will
show
continuous
continuity.
(D)
An
open
capacitor
will
show
constant
9MQ.
(E)
Resistance
between
each
terminal
and
chassis
should
be
infinite.
5. Magnetron
Continuity checks can only indicate an open filament or a shorted
magnetron. To diagnose for an.open filament or shorted magnetron.
(A) Isolate magnetron from the circuit by disconnecting the leads.
(B)
A
continuity
check
across
magnetron
filament
terminals
should
indicate
one
ohm
or
less.
(C)
A
continuity
check
between
each
filament
terminal
and
magnetron
case
should
read
open.
: