Bosch HBL 73 - Page 43

ELETTRODOMESTICI
VIA CHECCHI 98
I 21013 GALLARATE
ITALY
Page 12 of 28
Tuesday, June 18, 2002
BOSCH 700 SERIES:
SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING
2. If OK, replace keyboard or Display Board or both.
F125 UPPER OR SINGLE CANCEL KEY
CIRCUIT PROBLEM
1. Check all connections between keyboard (J1) and Display Board (P5).
2. If OK, replace keyboard or Display Board or both.
F126 LOWER CANCEL KEY CIRCUIT
PROBLEM
1. Check all connections between keyboard (J1) and Display Board (P5).
2. If OK, replace keyboard or Display Board or both.
F127 CANCEL KEY REDUNDANT
RETURN PROBLEM
1. Check all connections between keyboard (J1) and Display Board (P5).
2. If OK, replace keyboard or Display Board or both.
F141 SLAVE MICRO NOT FUNCTIONING 1. Check power and Display Board connectors P1B and associated wiring.
2. If OK, replace Power Board.
3. If fault persists, replace Display Board.
F143 VCC OPEN CIRCUIT ON SLAVE
MICRO
1. Check power and Display Board connectors P1B and associated wiring.
2. If OK, replace Power Board.
3. If fault persists, replace Display Board.
F145 TEMPERATURE SENSOR INPUTS
SHORTED TOGETHER (DOUBLE
OVEN)
Replace Power Board.
F147
GND OPEN CIRCUIT ON SLAVE
Replace Power Board.