2. When installing the new key board membrane, make
sure that the surface of escutcheon base is clean to
prevent a malfunction or shorted contacts.
6.3. Digital programmer circuit
(D.P.C.) DU and low voltage
transformer
1. Disconnect connectors CN1 & CN2 from D.P.C. board DU
(power supply board).
2. Remove 1 screw holding D.P.C. board DU (power supply
board) on inverter reinforcement/grounding bracket A.
3. Use tools such as pincers to reject the tab of plastic
bracket.
4. Remove D.P.C. board DU (power supply board).
5. Using solder wick or a desoldering tool and 30W soldering
iron carefully to remove all solder from the terminal pins of
the low voltage transformer and/or power relays.
CAUTION:
Do not use a soldering iron or desoldering tool of
more than 30 watts on D.P.C. contacts.
6. With all the terminal pins cleaned and separated from
D.P.C. contacts, remove the defective transformer/power
relays. Replace components making sure all terminal pins
are inserted completely, then resolder all terminal contacts
carefully.
6.4. H.V. Inverter
1. Discharge high voltage remaining in high voltage capacitor.
2. Remove
2
screws
holding
the
inverter
reinforcement/grounding bracket A on oven cavity.
3. Remove 2 screws holding inverter reinforcement bracket B
on cavity top plate.
4. Remove 1 screw holding oven thermistor on cavity top
plate.
5. Release lead wire harness from locking tabs on Inverter
bracket A.
6. Disconnect 2 lead wires from fan motor terminals.
7. Disconnect 2 lead wires from the harness of noise filter (U),
which are connected to both "Netural" and "live" lead wires
of oven circuit breaker (black and white housing
connectors).
8. Disconnect 2 lead wires form oven circuit breaker harness
connecting to main lead wire harness (blue and yellow
housing connectors).
9. Disconnect 2 high voltage lead wires from magnetron
filament terminals.
10. Unplug connector CN701 & CN702 from H.V. Inverter
board.
11. Remove 1 screw holding inverter air guide bracket on
reinforcement bracket B, then release locking tabs, detach
air guide bracket.
12. Release locking tabs connecting Inverter bracket A with
Inverter bracket B detach bracket A & B.
13. Remove 2 screws holding H.V. Inverter on Inverter bracket.
15
NN-CS599S
Summary of Contents for NN-CS599S
Page 2: ...2 NN CS599S ...
Page 3: ...3 NN CS599S ...
Page 5: ...1 FEATURE CHART 2 CONTROL PANEL 5 NN CS599S ...
Page 6: ...3 SCHEMATIC DIAGRAM 6 NN CS599S ...
Page 32: ...10 EXPLODED VIEW AND PARTS LIST 10 1 EXPLODED VIEW 32 NN CS599S ...
Page 40: ...11 DIGITAL PROGRAMMER CIRCUIT 11 1 SCHEMATIC DIAGRAM 40 NN CS599S ...
Page 41: ...41 NN CS599S ...
