Read Sharp R-7A65M (serv.man12) Technical Bulletin online
Sharp Electronics (UK) Limited CE Technical Support Group
Originator
$Y:
Supervisor
Approval Date / / Reference TB-M9701036
White - Carry out as required Yellow - Carry out as required and whenever unit comes in for service Red - Carry out on all units
MWO970309
Month of Issue :
March 1997
Classification :
White
MICROWAVE TECHNICAL BULLETIN
Page 1 of 1
MODELS
R7E55M
R7A66M
R7A65M
R7N76M
R7A67M
R7C55M
SYMPTOM When the oven is used on the convection function, it does not reach the correct
pre-heat temperature.
Note that if the unit under test is within the specified limit of 250 C +/- 15 C,
o
o
then no action is required.
CAUSE
Changes in component tolerances in the oven temperature sensing circuit.
ACTION
Change the value of R62 to 2k4 ( was originally 2k7 ).
If this does not have the desired effect, then it is permissible to change the value of
R62 to any value between 2k and 2k7 dependent on the resultant temperature.
R62 to any value between 2k and 2k7 dependent on the resultant temperature.
REF NO
DESCRIPTION
PART NUMBER
PRICE CODE
R62
Resistor, 2k
VRN-B12EK202F
AA
R62
Resistor, 2k4
VRN-B12EK272F
AA
R62
Resistor, 2k7
VRN-B12EF242J
AA
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