Sharp R-1500AT, Service Manual

Page: 14 / 56

R1500AT
5 – 2
SPECIFICATION OF ERROR
Outline Operation when error occurs Display in operation usually
When a basic performance and the function are ruined Displaying and heating stop EE0, EE1, EE2, EE3, EE8
When the dangers of the state of the high temperature and the ignition, etc. are
foreseen
Displaying and heating stop EE7
When you mistake the setting of the heating time Operation stop EE9
When neither the power supply nor the environmental condition are proper Operation stop EE4, EE5, EE6
When informing of the exchange time of parts Display Only CC1, CC2, CC3, CC4
Display for maintenance
Error his-
tory display
Content of maintenance Check item
Parts to be
replaced CC1 CC2 CC3 CC4
 – MG1 exchange time information Using time of MG1 MG1

– MG2 exchange time information Using time of MG2 MG2
 – Exhaust Fan motor exchange time information Using time of Exhaust motor Exhaust motor
 – T/C unit exchange time information Using number of times of RY2/RY3 Relay unit
A TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
B D C E F H I K L M R P S S T
EE0
EE0
EE0
EE0
EE0
EE0
EE0
EE1
EE1
EE2
EE2
EE3
EE3
EE3
EE4
EE5
EE6
EE6
EE60
EE7
EE7
EE7
EE8
EE8
EE8
EE8
EE8
EE8
EE8
EE8
EE8
EE9
Magnetron
MG1and
/or
MG2
Power
transformer
T
1
&
T2
High
voltage
capacitor
C1
and
/or
C2
H.V.rectifier
assembly
1
and/or
2
Secondary
interlock
switch
S
W1
and/or
SW2
Primary
interlock
system
Fuse
8A
F1
and/or
F2
Weak
points
for
F
an
motors
(DC24V)
Magnetron
temp.
fuse
TF1
and/or
TF2
Magnetron
thermistor
1
and/or
2
T
H
Exhaust
thermistor
Fan
m
otors
F
M
Exhaust
motor
EM
Antenna
motor
1
and/or
2
A
M
Air
flow
blocked
Low
or
High
power
supply
voltage
No
load
or
small
load
operation
Loose
wiring
Exceeding
of
maxmum
cooking
time
Burned
food
Relay
unit
Control
unit
Antenna
sensor
(1)
(Upper)
Antenna
sensor
(2)
(Lower)
Microwave
sensor
Frequency
of
power
supply
is
high.
EE 1 Failer of high voltage circuit 1
EE 2 Failer of high voltage circuit 2
EE 3 Failer of high voltage circuit 1&2
EE 4 Too high of input v13%)
EE 5
Too low of input voltage(-13%)
EE 7
Food burned (temp., too high)
EE 8
Melted contacts of relays
EE 9
Over maximum cooking time
EE 10 EEPROM error
EE 11 Life end of magnetron MG1
EE 21 Life end of magnetron MG2
EE 31 Life end of magnetron MG1, 2
EE 81 Life end of relays RY2/RY3
EE 83 Over Current error
EE 14
MG1 Cooling Fan lock judge
EE 24
MG2 Cooling Fan lock judge
EE 44
Exhaust motor lock judge
EE 54
Life end of exhaust motor
EE 15
MG1 antenna rotation error
EE 25
MG2 antenna rotation error
EE 35
MG1/2 antenna rotation error
EE 16
MG1 thermistor open
EE 26
MG2 thermistor open
EE 17
MG1 temperature, too high
EE 27
MG2 temperature, too high
EE 18
Magnetron MG1
EE 28
Magnetron MG2
EE 38
Magnetron MG1& MG2
EE 29
Exhaust thermistor open/short
EE 19
No food
EE 39
EE 60 Small food
Not correct frequency
Error history
display
Usual error
display
Content of error
If the power supply voltage is higher than 240V+10% (264V), EE4 will be displayed.
If the power supply voltage is lower than 230V-12% (202V), EE5 will be displayed.
NOTE 1:
1) If the magnetrons are used for more than 4000 hours, EE11, EE21 or EE31 will appear when error histories are checked.
2) If the on/off counts of the relay (RY2 or RY3) become more than 400000 times, EE81 will appear when error histories are checked.
3) Even if EE11, EE21, EE31 or EE81 appears when error histories are checked, if the oven is not operated for 3 minutes or more,
or if the oven is disconnected from the power supply once and then the oven is connected to the power supply, the oven can
be operated once more. But after that when the oven is going to be used again, EE1, EE2, EE3 or EE8 will appear and the oven
will not operate.
NOTE 3:
" " means that the parts should be replaced if EE11, EE21, EE31 or EE81 is indicated on the display when error histories are checked. NOTE 2: