38
R-1750
R-1751
R-1752
R-1754
Terminal
Push
Pull down
1
2
Lever
Positive lock®
connector
POSITIVE LOCK
®
CONNECTOR (NO-CASE TYPE) REMOVAL
1. Disconnect the power supply cord and remove the oven
from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")
2. Open the door and block it open.
3. To discharge high voltage capacitor, wait for 60 seconds.
4. Push the lever of positive lock
®
connector.
5. Pull down on the positive lock
®
connector.
CAUTION: WHEN CONNECTING THE POSITIVE LOCK
®
CONNECTORS TO THE TERMINALS, IN-
STALL THE POSITIVE LOCK
®
SO THAT THE
LEVER FACES YOU.
Positive lock
®
connector
STOP SWITCH, PRIMARY INTERLOCK SWITCH, SECONDARY INTERLOCK SWITCH AND
MONITOR SWITCH REMOVAL
1. Disconnect the power supply cord and remove the oven
from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")
2. Open the door and block it open.
3. To discharge high voltage capacitor, wait for 60 seconds.
4. Remove the control panel assembly, referring to the
procedure of "CONTROL PANEL ASSEMBLY ,
CONTROL UNIT AND KEY UNIT REMOVAL".
5. Remove the two (2) screws holding the latch hook to the
oven cavity front flange.
6. Remove the latch hook from the oven cavity front flange.
7. Disconnect the wire leads of each switch.
8. Remove each switch from the latch hook by pushing the
one (1) stopper tub holding each switch.
9. Now, each switch is free.
Re-install
1. Re-install each switch in its place. The secondary interlock
switch is in the lower position, stop switch and primary
interlock switch are in the upper position and the monitor
switch is in the middle position.
2. Re-connect wire leads to each switch. Refer to pictorial
diagram.
3. Secure the latch hook (with two (2) mounting screws) to
oven cavity front flange.
4. Make sure that the monitor switch is operating properly
and check continuity of the monitor circuit. Refer to
chapter "Test Procedure" and "Adjustment procedure".
7. Disconnect the wire leads from the relay RY1.
8. Disconnect the connectors CN-A, CN-B, CN-F, CN-E
and CN-H from the control unit.
9. Remove the control panel assembly from the oven.
10.Now, the control panel assembly is free.
11.Disconnect the connector CN-G from the control unit.
12.Release the four (4) screws holding the LSI unit to the
key fixing plate.
13.Remove two (2) screws holding the power unit to the key
fixing plate.
14.Release the two (2) tabs holding the power unit to the key
fixing plate.
15.Now, the control unit is free.
16.Remove the one (1) screw holding the key fixing plate to
the control panel.
17.Release the nine (9) tabs holding the key fixing plate to
the control panel.
18.Remove the key fixing plate from the control panel.
19.Tear the key unit from the key fixing plate.
20.Now, the key unit is free
NOTES FOR KEY UNIT REPLACEMENT
1. Do not reuse the torn key unit because the performance
of the adhesive becomes weak.
2. Before attaching a new key unit, wipe off remaining
adhesive on the key fixing plate surfaces completely with
a soft cloth soaked in alcohol.
3. When attaching the key unit to the key fixing plate, adjust
the upper edge and right edge of the key unit to the
correct position of key fixing plate.
4. Stick the key unit firmly to the key fixing plate by rubbing
with soft cloth not to scratch.
1. Disconnect the power supply cord and remove the oven
from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")
2. Open the door and block it open.
3. To discharge high voltage capacitor, wait for 60 seconds.
STOP SWITCH, PRIMARY INTERLOCK SWITCH, SECONDARY INTERLOCK SWITCH AND
MONITOR ADJUSTMENT
4. Remove the control panel assembly, referring to the
procedure of "CONTROL PANEL ASSEMBLY ,
CONTROL UNIT AND KEY UNIT REMOVAL".
If the stop switch, secondary interlock switch and monitor
switch do not operate properly due to a misadjustment, the
