27
R-7H55
HIGH VOLTAGE RECTIFIER ASSEMBLY REMOVAL
from the power transformer.
CAUTION: WHEN REPLACING THE HIGH VOLTAGE
RECTIFIER ASSEMBLY, THE GROUND SIDE
TERMINAL MUST BE SECURED FIRMLY
WITH A GROUNDING SCREW.
1. CARRY OUT 3D CHECKS.
2. Remove one (1) screw holding the rectifier assembly to
the capacitor holder.
3. Disconnect the rectifier assembly from the capacitor.
4. Disconnect the high voltage wire of the rectifier assembly
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads from the fan motor.
3. Release the main harness from the wire holder and
thermal cut-out.
4. Release two snap bands of the thermistor harness from
chassis support.
5. Remove three (3) screws holding the chassis support to
the oven cavity front face plate, magnetron and rear
cabinet.
6. Remove the chassis support.
7. Disconnect wire leads from the damper switch..
8. Remove two (2) screws holding the magnetron and fan
duct to the waveguide..
9. Remove one (1) screw holding the fan duct to the oven
cavity front face plate.
10.Release the main harness from the hole of the fan duct.
11.Release the thermistor harness from the hole of the fan
duct.
12. Remove the fan duct assembly from the oven.
13.Remove one (1) screw holding the thermal cut-out
mounting angle (with thermal cut-out) to the fan motor.
14.Remove the fan blade from the fan motor shaft according
the following procedure.
1) Hold the edge of the rotor of the fan motor by using a pair
of groove joint pliers.
CAUTION:
*
Make sure that any pieces do not enter the gap
between the rotor and the stator of the fan motor
because the rotor is easily shaven by pliers and
metal pieces may be produced.
*
Do not touch the pliers to the coil of the fan motor
because the coil may be cut or injured.
*
Do not disfigure the bracket by touching with the
pliers.
2) Remove the fan blade from the shaft of the fan motor by
pulling and rotating the fan blade with your hand.
3) Now, the fan blade will be free.
CAUTION:
*
Do not use this removed fan blade again because the
hole (for shaft) of it may become bigger than a
standard one.
15.Remove the two(2) screws holding the fan motor to the
fan duct.
16.Now, the fan motor is free.
1. CARRY OUT 3D CHECKS.
2. Disconnect filament lead of transformer from high voltage
capacitor.
3. Disconnect high voltage wire lead from the high voltage
capacitor.
4. Disconnect the high voltage wire of the rectifier assembly
from the power transformer.
5. Remove one (1) screw holding the rectifier to the capacitor
holder.
6. Remove one (1) screw holding the capacitor holder to
base plate.
7. Remove the capacitor from the holder.
POSITIVE LOCK
®
CONNECTOR (NO-CASE TYPE) REMOVAL
Push the lever of positive lock
®
connector. Pull down on the
positive lock
®
connector.
CAUTION: WHEN YOU CONNECTING THE POSITIVE
LOCK
®
CONNECTORS TO THE TERMINALS,
INSTALL THE POSITIVE LOCK
®
SO THAT
THE LEVER FACES YOU
Terminal
Push
Pull down
1
2
Lever
Positive lock
®
connector
Figure C-1. Positive lock
®
connector
FAN MOTOR REMOVAL
Coil
Gap
Rotor
Bracket
Stator
Groove joint pliers
Rear view
HIGH VOLTAGE CAPACITOR REMOVAL
Summary of Contents for R-7H55
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