Read Sharp R-209 Service Manual online
R-209(SL)
R-209(W)
R-209(W)
9
CARRY OUT 3D CHECKS.
Disconnect the leads from the terminals of noise filter.
Using an ohmmeter, check between the terminals as described in
the following table.
Using an ohmmeter, check between the terminals as described in
the following table.
MEASURING POINTS
INDICATION OF OHMMETER
Between N and L
Open circuit
Between terminal N and WHITE
Short circuit
Between terminal L and RED
Short circuit
If incorrect readings are obtained, replace the noise filter unit.
CARRY OUT 4R CHECKS.
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
E
SWITCH TEST
CARRY OUT 3D CHECKS.
Isolate the switch to be tested and using an ohmmeter check between the terminals as described in
the following table.
Isolate the switch to be tested and using an ohmmeter check between the terminals as described in
the following table.
F
TEMPERATURE FUSE TEST
CARRY OUT 3D CHECKS.
A continuity check across the temperature fuse terminals should indicate a closed circuit unless the
temperature of the temperature fuse reaches approximately 248˚F(120˚C).
temperature of the temperature fuse reaches approximately 248˚F(120˚C).
An open temperature fuse indicates overheating of the oven, exchange the temperature fuse and
check inside of oven cavity and for improper setting of cooking time or operation of control unit. Check
for restricted air flow through the vent holes of the oven cavity, especially the cooling fan and air guide.
check inside of oven cavity and for improper setting of cooking time or operation of control unit. Check
for restricted air flow through the vent holes of the oven cavity, especially the cooling fan and air guide.
CARRY OUT 4R CHECKS.
G
BLOWN FUSE
CARRY OUT 3D CHECKS.
1. If the fuse is blown, there could be a shorts or grounds in electrical parts or wire harness. Check
them and replace the defective parts or repair the wire harness.
2. If the fuse is blown when the door is opened, check the monitored latch switch, monitor switch,
timer switch and relay RY1.
If the fuse is blown by incorrect door switching replace the defective switch(es) and the fuse.
CARRY OUT 4R CHECKS.
CAUTION:
Only replace fuse with the correct value replacement.
H
NOISE FILTER TEST
Table: Terminal Connection of Switch
Plunger Operation
COM to NO
COM to NC
Released
Open circuit
Short circuit
Depressed
Short circuit
Open circuit
COM; Common terminal,
NO;
NO;
Normally open terminal
NC;
Normally close terminal
If incorrect readings are obtained, make the necessary switch adjustment or replace the switch.
CARRY OUT 4R CHECKS.
FUSE
T6.3A
T6.3A
N
L
LINE CROSS CAPACITOR
0.068
µ/AC250V
NOISE SUPPRESSION COIL
LINE BYPASS
CAPACITOR
0.0022
CAPACITOR
0.0022
µ/AC250V
LINE BYPASS
CAPACITOR
0.0022
CAPACITOR
0.0022
µ/AC250V
NOISE FILTER
WHT
RED
Click on the first or last page to see other R-209 service manuals if exist.