TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
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RELAY SYMBOL ,
OPERATIONAL
CONNECTED COMPONENTS
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VOLTAGE
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RYl
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Acprox.
19V.3.C.
/ Ovenlamp ana Turntable motor
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I
RY2(COOK)
/ Amrox. ‘SV.3 C. Power transformer
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RY3(HEATER!
1 Poprox. ! 8V.3.C
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1 tiestrng element
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RY4
1 Acprox. 19V.a C,
amoer motor
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RY5
] Ai;orox. - Eiv 3 2.
!”
Lc~~Jec:Icn mctcr
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RY6
j Apo:ox. t9v.z 2, / Cooling fan morcr
N
PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD
(PWB) IS OPEN.
To protect the electronic circuses. this model s provided with a fir+ fo;i pat:ern adcec; ‘o ;!-2 zrimar\, 3r;
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the PWB. this foil pattern acts as a fuse.
:f th$ foii pattern is open. foilow :he
:rtci.,Cis~Fc:_71in$ gLice
given below for repair.
Problem: POWER ON. $ndicaror does GOI ilghr tip
Disconnect the leads iron the primary ZIP :he power transfcrmer. MaKe SG:~ :hs:,: :pe :escs reTa:‘:
isolated from other oven
zompcnents ant shXSiS.( Use ,nsularicn tape :f ?ec2ssa?:l
“y~q~;c; -cE
supply.
STEPS
OCCURANCE
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I
CAUSE 3R CORRECI;C~~i
1
The rated voltage s not applied to POWER i Check supply vo!tage ano oven poiver ~3rd
terminal of CPU connector ,9-A)
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2 The rated voitage s applied to primary side of Power transformer or seccnaary zrrcu~t oefec;i’Je C,neck
.
power transformer
and repair.
3
Only pattern at “a” IS broken
*Insert jumper wrre 1 and soider
4
Pattern at “a” and ‘5’ are broken. *Insert the coil RCiLF2003YAZZ betweer ‘c” and “d”
NOTE: At the time of these repairs. make a
visual inspection of the varistor for
burn damage and test the transformer
with an ohmmeter for the presence of
layer short-circuit (check primary coil
resistance). If any abnormal condition
is detected, replace the defective
parts.
0
AH SENSOR TEST
Checking the initial sensor cooking condition
(1) The oven should be plugged in at least five minutes before sensor cooking.
(2) Room temperature should not exceed 95”F(35”C).
(3) The unit should not be installed in any area where heat and steam are generated. The unit should
not be installed, for example, next to a conventional surface unit. Refer to the “INSTALLATION In-
structions” in the operation manual.
71
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