Disassembly Instructions - Sanyo EM-G4750EES Service Manual

8.DISASSEMBLY INSTRUCTIONS

- OVEN MUST BE DISCONNECTED FROM ELECTRI-
CAL OUTLET WHEN MAKING REPLACEMENTS,
REPAIRS, ADJUSTMENTS, AND CONTINUITY
CHECKS BEFORE PROCEEDING WITH ANY REPAIR
WORK AFTER DISCONNECTING. WAIT AT LEAST 1
MINUTE, UNTIL THE CAPACITOR IN THE HIGH VOLT-
AGE AREA HAS FULLY DISCHARGED.
- WHEN REPLACING ANY DOOR MICRO SWITCH,
REPLACE WITH THE SAME TYPE SWITCH SPECI-
FIED ON THE PARTS LIST.
A. REMOVING PRIMARY INTERLOCK SWITCH,
DOOR SENSING SWITCH AND INTERLOCK
MONITOR SWITCH
(See Figure 1 on page 1 and Figure 12 on this page)
(1) Remove 2 screws securing the lever stopper.
(2) Disconnect all lead wires from the primary interlock
switch, door sensing switch and the interlock monitor
switch
(3) Ease away the retaining clips holding the Primary
interlock switch onto the lever stopper and remove.
(4) Remove the door sensing switch by reference to the
step (3).
(5) Remove the interlock monitor switch by reference to
step (3).
(6) Make the necessary adjustment, and make microwave
energy leakage check according to "1. ADJUSTMENT
PROCEDURES" on page 1. After the switch is
replaced with a new one, check proper operation of it
according to "CHECKOUT PROCEDURE FOR
SWITCHES" on page 8.
MICROSWITCH
RETAINING
CLIPS
Interlock Switch Replacement - when replacing faulty
switches, be sure switch retaining clips are not bent,
broken or otherwise deficient in their ability to secure
the switches in place.
B. REMOVING THE ANTENNA
(See exploded view on page 15 )
(1). Remove the screw securing the cavity cover to the
cavity.
(2). Remove the antenna complete by slightly bending it
so the retension clips holding it slide out of the cavity
wall.
C. REMOVING MAGNETRON
(See exploded view on page 16 )
(1) Remove the antenna complete according to
B. REMOVING THE ANTENNA.
(2) Disconnect the 2 lead wires from the magnetron.
(3) Remove 1 screw securing the duct to the
magnetron, and take out the duct.
(7) Remove 4 screws securing the magnetron to
the waveguide.
Take out the magnetron VERY CAREFULLY.
- When removing the magnetron, make sure that its dome
does not hit any adjacent parts, or it may be damaged.
- After replacing the magnetron, be sure to check the
microwave energy leakage with a leakage detector and
confirm the leakage is below 5 mW/cm
D. REMOVING FUSE
(A) Remove the 8A fuse with a screwdriver.
- When replacing the 8A fuse, be sure to use an exact
repair part.
- If the 8A fuse blows immediately, check the primary
interlock switch and the interlock monitor switch (termi
nals "C" and "NC") according to "CHECKOUT
PROCEDURE FOR SWITCHES" on page 8, and make
sure to check the microwave energy leakage according
to "1. ADJUSTMENT PROCEDURE" on page 1, when
the primary interlock switch or the interlock monitor
switch is replaced.
- If the primary interlock switch is defective, replace not
only the primary interlock switch but also the interlock
monitor switch.
Then install a new 8A fuse.
- If the primary interlock switch and the interlock monitor
switch (terminals "C" and "NC") operate properly,
LEVER STOPPER
determine which of the following is defective: blower
motor, turntable motor, high voltage transformer, high
voltage capacitor, high voltage diode or magnetron.
- If the high voltage diode is defective , replace not
only the high voltage diode but also the HV fuse.
E. REMOVING DOOR
Figure 12
the new door has to be set properly ensuring the correct
door gap between door body and cavity front.
1. Mount door loosely on cavity.
2. Before tigthening the top and bottom hinge screws
place feeler gauges (the thickness varies for different
models- see table below) between the door assembly and
the cavity front plate between the top and bottom hinges.
NB. Be careful not to scratch the door cover with the feel-
er gauges.
3. The door should then be aligned with the control base
and held firmly in place leaving a gap within 1-2mm.
between the door cover and control base.
-13-
NOTES
(1) Remove the 2 screws securing the upper hinge.
(2) Tilt the top of the door toward you.
(3) Lift up the door to remove it.
When replacing the door body or door assembly
To set the new door;
2
.