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Tuesday, June 18, 2002
BOSCH 700 SERIES:
ELETTRODOMESTICI
SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING
VIA CHECCHI 98
I 21013 GALLARATE
ITALY
It doesn't work or the high speed
WORKING FAN
It doesn't work or the high speed
HEATERS
All the heaters in one cavity never
1. Check the connections between the cooling fan and the Power Board
doesn't work.
2. Check R1 (78Ohms) resistor in series with the fan coil.
3. Replace the Power Board.
1. Check the connections between the cooling fan and P10 (also P19 for
doesn't work.
2. Check R2 (39Ohms) resistor in series with the fan coil.
3. Check the connections with the Auxiliary Relay Board P2.
4. Replace the Auxiliary Relay Board or the Power Board if relay outputs
1. Check connections, particularly the safety thermostats circuit in series
turn on.
2. Check the P1B Display Board ó Power Board cable and refer to the
3. Check connections with the DLB relay on the Auxiliary Relay Board, if
4. If relay outputs don't work, replace the Power Board.
(P10, P19 for SGL or P11 for DBL).
SGL) on the Power Board.
don't work.
with L2 (black wire) and the common L1 red wire on the top of relays.
table to detect the heaters relay enable lines.
present. Check, the relay outputs before replacing the Auxiliary Relay
Board.
Page 16 of 28
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