Sharp R-310AK User Manual

8
R-310AK
R-330AK
R-330AW
DESCRIPTION AND FUNCTION OF COMPONENTS
Figure O-2. Oven Schematic-Cooking Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1. DOOR CLOSED
2. COOKING TIME PROGRAMMED
3. VARIABLE COOKING CONTROL "HIGH"
4. "START" PAD TOUCHED
OVEN
LAMP
TURN-
TABLE
MOTOR
FAN 
MOTOR
POWER 
TRANSFORMER
CAPACITOR
0.94µF
MONITOR 
SWITCH
RECTIFIER
MAGNETRON
SECONDARY
INTERLOCK
SWITCH
TTM
OL FM
A3
COM.
N.O.
DOOR
SENSING
SWITCH
BA
(RY-1)
(RY-2)
CONTROL UNIT
PRIMARY
INTERLOCK
RELAY
F3
F1
F2
AH SENSOR
120V AC
60 Hz
OUTER CASE
SWITCH
OUTER CASE
SWITCH
MONITOR 
FUSE
THERMAL 
CUT-OUT (OVEN)
THERMAL 
CUT-OUT (MG.)
This Circuit is only for R-330AK and R-330AW.
These outer case switches will be used from Oct.
1996 production.
DOOR OPEN MECHANISM
The door is opened by pushing the open button on the
control panel, refer to the Figure D-1.
When the open button is pushed, the open button pushes up
the switch lever, and then the switch lever pushes up the
latch head. The latch heads are moved upward and re-
leased from latch hook. Now the door will open.
Latch Hook

Door
Sensing 
Switch
Monitor
Switch
Secondary
Interlock
Switch
Switch
Lever
Latch
Heads
Door
Figure D-1. Door Open Mechanism
DOOR SENSING AND SECONDARY INTERLOCK
SWITCHES
The secondary interlock switch is mounted in the lower
position of the latch hook and the door sensing switch in the
primary interlock system is mounted in the upper position of
the latch hook. They are activated by the latch heads on the
door. When the door is opened, the switches interrupt the
circuit to all components. A cook cycle cannot take place
until the door is firmly closed thereby activating both inter-
lock switches. The primary interlock system consists of the
door sensing switch and primary interlock relay located on
the control circuit board.
MONITOR SWITCH
The monitor switch is activated (the contacts opened) by the
latch head on the door while the door is closed. The switch
is intended to render the oven inoperative, by means of
blowing the monitor fuse, when the contacts of the primary
interlock relay and secondary interlock switch fail to open
when the door is opened.
Functions:
1. When the door is opened, the monitor switch contact
close (to the ON condition) due to their being normally
closed. At this time the primary interlock relay and

Sharp R-310AK Specifications

General

Brand	Sharp
Model	R-310AK
Category	Microwave Oven
Language	English