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ELETTRODOMESTICI
VIA CHECCHI 98
I 21013 GALLARATE
ITALY
CONNECTION CABLE BETWEEN DISPLAY BOARD P5 (10POS) AND KEYBOARD J1 (STRIP 12POS)
P5
J1
FUNCTION
12
NOT USED
11
FREE POSITION
1
10
+15V
2
9
FEEDBACK
3
8
RETURN 3
4
7
RETURN 2
5
6
RETURN 1
6
5
RETURN 4
7
4
STROBE 3
8
3
STROBE 2
9
2
STROBE 1
10
1
GND
REMARK: The control sends three strobe signals alternatively and checks the return lines to see if one of the signals is coming back.
Every strobe line scans three keys, if there is a return signal it means that the key has been pressed.
Tuesday, June 18, 2002
BOSCH 700 SERIES:
SERVICE INSTRUCTIONS FOR OVEN TESTING AND BASIC TROUBLESHOOTING
Single oven version
OBSOLETE. THE CURRENT KEYBOARD DOESN'T USE +15V ANYMORE.
STROBE LINE FOR COOKING MODE, TEMPERATURE, LIGHT KEYS.
GROUND VOLTAGE REFERENCE FOR ALL LINES TO KEYBOARD.
NOTES
CONNECTED WITH J1-1 ON THE KEYBOARD.
USED FOR CONNECTOR POLARISING.
KEYBOARD SENSE FEEDBACK.
RETURN LINE FOR COOKING MODE KEY.
RETURN LINE FOR CANCEL, TEMPERATURE, START KEYS.
RETURN LINE FOR LIGHT, TIME KEYS.
ADDITIONAL SAFETY RETURN LINE FOR CANCEL KEY.
STROBE LINE FOR TIME, START KEYS.
STROBE LINE FOR CANCEL KEY.
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