Bosch HBL 73 Service Manual page 49

Tuesday, June 18, 2002
BOSCH 700 SERIES:
ELETTRODOMESTICI
SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING
VIA CHECCHI 98
I 21013 GALLARATE
ITALY
CALIBRATION
ERROR
BAD In both cavities the temperature
TEMPERATURE curves can't reach steady
PROFILE conditions or the heaters turn off.
POWER UP SEE
CALVAL ERROR
(condition)
SLV_EE CHIP/
CKT BAD OR
RTDS NOT CAL
DO NOT USE
OVEN
CALL SERVICE
1. This message is displayed at power-up when a calibration error has
been detected. The problem can be due to bad values in the memory
or to problems in the memory circuit or during data transmission
between the two boards. Replace the Power Board.
2. If the problem persists, replace the Display Board too.
This message is also displayed at first power-up when a Display Board
still configured as a double is installed in a single oven, before being re-
configured.
There can be a HW problem on the Power Board that prevents the pull-in
voltage pulses generation to switch the relays on. The problem becomes
evident when many relays are activated simultaneously. Replace the
Power Board.
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