View Sharp R-86STM (serv.man6) Service Manual online
open button is pushed ,the open button push up the open lever and
then the open lever push up the latch head, , the latch head is moved
upward, and released from the latch hook now the door can be
latch head on the door while the door is closed. The switch is intended
to render the oven inoperative by means of blowing the fuse F8A when
the contacts of the monitored latch switch fail to open when the door is
closed and contacts (COM-NO) open. At this time the contacts
(COM-NO) of monitored latch switch is in the OFF condition (con-
tacts open) due to their being normally open contact switches.
contacts (COM-NO) of monitored latch switch and stop switch are
closed.(On opening the door, each of these switches operate
ing of the monitor switch (COM-NC) contacts.
FOR PROPER OPERATION. (REFER TO CHAPTER
fuse blows to prevent an electric shock or fire hazard.
tact (COM-NC) closes.
of high voltage transformer is shorted.
temperature goes up higher than 125
will open and line voltage to the high voltage transformer will cut off
and operation of the magnetron will be stopped. The defective thermal
cut-out must be replaced with a new one.
The cut-out contacts will open when temperatures exceed 145
is both directions. And it prevents the temperature rise of the high volt-
age transformer by blowing the fuse F8A when the high voltage recti-
fier is shorted.
KV. The rated peak reverse voltage of D2 of the asymmetric rectifier is
1.7 KV. D1 and D2 of the asymmetric rectifier or high voltage rectifier
are shorted when the each peak reverse voltage goes beyond the
each rated peak reverse voltage. (The process of the blowing the fuse
might flow back in the power circuit.
air is directed through the air vanes surrounding the magnetron and
cools the magnetron. This air is channelled through the oven cavity to
remove steam and vapours given off from heating food. It is then
exhausted through the exhausting air vents of the oven cavity.
on the top of the oven cavity.
at the base of the oven cavity.
(less than 105
in microwave cooking condition.
intermittently within 32-seconds time base since the oven is started in
microwave cooking condition. The oven will stop its operation when
the difference of the voltage is more than 0.781 volts in microwave
ment circuit is measured.
oven cavity and stop the oven.
convection, grill (top and bottom grills) or dual cooking mode, the
oven is turned off.
because this condition is same as above.