ELETTRODOMESTICI
VIA CHECCHI 98
I 21013 GALLARATE
ITALY
Page 13 of 28
Tuesday, June 18, 2002
BOSCH 700 SERIES:
SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING
MICRO
F151 EEPROM FAILURE OR
COMMUNICATION CIRCUIT
ERROR
1. Check power and Display Board connectors P1B and associated wiring.
2. If OK, replace Display Board.
3. If fault persists, replace Power Board.
F153 CONTROL CALIBRATION VALUES
OUT OF RANGE
1. Check power and Display Board connectors P1B and associated wiring.
2. If OK, replace Power Board.
3. If fault persists, replace Display Board.
F155 CORRUPTED EEPROM 1. If the fault message is displayed at power-up, ignore it. Sometimes at power
down, the control saves the current time but fails to calculate and write the
checksum in its memory. At the following power-up, a fault occurs due to this
failure.
2. If F155 appears when starting a cooking mode, it means that the cooking
parameters in the control memory are corrupted. Replace immediately the Display
Board.
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