Bosch HMV9302 Service Manual - Page 15

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) 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 (Relay6) from the circuit board. Screw Control Panel (4) Remove 3 screws securing the circuit board. Circuit Board Figure 2 (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. Power Transformer (CN5) (CN2) (CN5)-For the sensor model only (CN2) Relay 2 (Relay 2) Control Bracket FPC Connector(S1) Circuit Board (CN1) Figure 1 7-4 Figure 3