Panasonic NN-S251BL, Service Manual, Page: 15 / 44

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.)
BEFORE A. GRILLE HAVE TO REMOVE FIRST.
A. REMOVING POWER AND CONTROL
CIRCUIT BOARD (Figures 1, 2 and 3)
(1) Remove a screw securing the control panel
assembly to the oven cavity.
(2) Remove the control panel with pushing it upward.
(3) Remove the connector (CN1) and wire leads
(Relay7) from the circuit board.
(4) Remove 3 screws securing the circuit board.
(5) Remove the FPC connector from the terminal
socket following “HOW TO REMOVE THE FPC
CONNECTOR” on the next page.
(6) Remove the circuit board from the control bracket
carefully.
7-4
Circuit Board
Figure 2
Figure 3
Control Bracket
FPC Connector(S1)
Circuit Board
DISASSEMBLY INSTRUCTIONS
Figure 1
Screw
Control Panel
(Relay 7)
Relay 7
Power Transformer
(CN1)