GE JVM1790SK Service Manual - Page 15

Disassembly Instructions - control panel

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DISASSEMBLY INSTRUCTIONS IMPORTANT NOTES: UNIT MUST BE DISCONNECTED FROM ELECTRICAL OUTLET WHEN MAKING REPAIRS, REPLACEMENTS, ADJUSTMENTS AND CONTINUITY CHECKS. WAIT AT LEAST ONE MINUTE, UNTIL THE HIGH VOLTAGE CAPACITOR IN THE HIGH VOLTAGE POWER SUPPLY HAS FULLY DISCHARGED. THE CAPACITOR SHOULD BE DISCHARGED BY USING INSULATED WIRE - I.E. TEST PROBE CONNECTED TO 10K-OHM RESISTOR IN SERIES TO GROUND. WHEN RECONNECTING THE WIRE LEADS TO ANY PART, MAKE SURE THE WIRING CONNECTIONS AND LEAD COLORS ARE CORRECTLY MATCHED ACCORDING TO THE OVERALL CIRCUIT DIAGRAM. (ESPECIALLY SWITCHES AND HIGH VOLTAGE CIRCUIT.) A. REMOVING POWER AND CONTROL CIRCUIT BOARD (Figures 1, 2 and 3) (1) Disconnect power at the main fuse or circuit breaken, or pull the plug. Remove the top grille by removing the two screws that hold it in place. (2) Remove a screw securing the control panel assembly to the oven cavity. (3) Remove the control panel with pushing it upward. (4) Remove the six connectors (CN1, CN2, CN3, CN5, CN6, CN8) and wire leads (Relay2, Relay11) from the circuit board. Screw Control Panel (5) Remove 7 screws securing the circuit board. Circuit Board Figure 2 (6) Remove the FPC connector from the terminal socket following "HOW TO REMOVE THE FPC CONNECTOR" on the next page. (7) Remove the knob. (8) Remove the circuit board from the control bracket carefully. Control Bracket Power Transformer (CN3) (CN6) (Relay 11) (Relay 2) (CN8) (CN5) Figure 1 (CN2) (CN1) FPC Connector(S1) Circuit Board 7-4 Figure 3

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IMPORTANT NOTES:
UNIT MUST BE DISCONNECTED FROM ELEC-
TRICAL OUTLET WHEN MAKING REPAIRS, RE-
PLACEMENTS, ADJUSTMENTS AND CONTIN-
UITY CHECKS. WAIT AT LEAST ONE MINUTE,
UNTIL THE HIGH VOLTAGE CAPACITOR IN THE
HIGH VOLTAGE POWER SUPPLY HAS FULLY
DISCHARGED.
THE CAPACITOR SHOULD BE DISCHARGED BY
USING INSULATED WIRE - I.E. TEST PROBE
CONNECTED TO 10K-OHM RESISTOR IN SERIES
TO GROUND.
WHEN RECONNECTING THE WIRE LEADS TO
ANY PART, MAKE SURE THE WIRING CONNE-
CTIONS AND LEAD COLORS ARE CORRECTLY
MATCHED ACCORDING TO THE OVERALL CIR-
CUIT DIAGRAM. (ESPECIALLY SWITCHES AND
HIGH VOLTAGE CIRCUIT.)
A. REMOVING POWER AND CONTROL
CIRCUIT BOARD (Figures 1, 2 and 3)
(1) Disconnect power at the main fuse or circuit
breaken, or pull the plug. Remove the top grille by
removing the two screws that hold it in place.
(2) Remove a screw securing the control panel
assembly to the oven cavity.
(3) Remove the control panel with pushing it upward.
(4) Remove the six connectors (CN1, CN2, CN3, CN5,
CN6, CN8) and wire leads (Relay2, Relay11) from
the circuit board.
(5) Remove 7 screws securing the circuit board.
(6) Remove the FPC connector from the terminal
socket following “HOW TO REMOVE THE FPC
CONNECTOR” on the next page.
(7) Remove the knob.
(8) Remove the circuit board from the control bracket
carefully.
7-4
DISASSEMBLY INSTRUCTIONS
Figure 1
Control Panel
Screw
Power
Transformer
(CN2)
(CN1)
(Relay 2)
(CN6)
(Relay 11)
(CN5)
(CN3)
(CN8)
Circuit Board
Figure 2
FPC Connector(S1)
Control Bracket
Circuit Board
Figure 3