Bosch HMV9302 Service Manual - Page 34

PROBLEM - E: Unit does not heat up even if display counts down when START key is touched for HIGH POWER cooking. 1 Check: 1. PRIMARY AND SECONDARY INTERLOCK SWITCHES 2. THERMOSTAT Check the contact of relay 2(see page 7-18) 2 NO continuity Contact OK Replace circuit board Normal circuit board Check contact of connector S1 Poor contact Contact OK Correct seating Replace circuit board Normal contact Normal circuit board Measure resistance of H.V.Transformer (see page 7-15) Resistance incorrect Replace H.V.T. Normal H.V.T. Resistance incorrect Replace H.V.C. Normal H.V.C. Normal resistance Check the continuity of H.V.C. (see page 7-16) Normal resistance Check the continuity of H.V.D. (see page 7-16) Abnormal Replace H.V.D. Normal H.V.D. Normal Replace Magnetron Normal Magnetron Runs Runs Runs Runs Runs Runs Runs 7-23