Component Teardown
4-13
Control Assembly And CPU Unit
Removal
CONTROL PANEL ASSEMBLY
1. Disconnect the oven power supply cord and remove
outer case.
2. Open the oven door and block it open.
3. Discharge the high voltage capacitor.
4. Disconnect the 9-pin & 14-pin harness from the
connectors CN-J and CN-H on the power unit.
5. Remove the four (4) screws securing the control
panel assembly to the oven cavity front plate.
6. Insert a flat edge screwdriver or similar object to
release the Locking Tabs on bottom of Panel angle
(See Figure 4-9).
7. Slide the control panel assembly leftward to release
the eight (6) tabs of the control panel assembly from
the oven cavity front plate.
CPU UNIT
8. Disconnect the 14-pin (CNK), 9-pin (CNL) & 10-pin
(CNM) harness from the connectors and CN-J and
CN-H on the power unit.
9. Remove the eight (8) screws securing the CPU unit
to the panel sub assembly. (See Figure 4-9).
10. Now, the CPU unit is free.
To discharge the high voltage capacitor, wait for 60
seconds and then short-circuit the connection of
the high-voltage capacitor (that is the connecting
lead of the high-voltage rectifier) against the
chassis with the use of an insulated screwdriver.
Tabs
Panel Angle
Panel
Screw
Screw
CPU
Locking tabs
Top
Bottom
Sub Assembly
Figure 4-8. Control Panel and CPU
After the panel angle is removed from the panel
sub assembly, it is can be found that the bottom
side of the panel sub assembly is melted and
transformed by heat. But it is not abnormal and
no problem to use the oven.
Reassembly Note:
When reassembling the Control Panel assembly, be
sure and lock the (Locking Tabs) back into place to
prevent any gaps.
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