Frigidaire CFMV152KW Servicing Manual page 34

Section 3 Troubleshooting and Testing
Pin# Signal I/O Description
OUT
34 P26
35 OUT
P25
OUT
36 P24
37 P23 OUT
OUT
38 P22
39 P21 OUT
OUT
40 P20
41 OUT
P17
OUT
42 P16
OUT
43 P15
OUT
44 P14
OUT
45-47 P13-P11
OUT
48-50
SEG24-SEG22
51-72 OUT
SEG21-SEG0
73-74 IN
VCC/VREF
IN
75 AVSS
OUT
76 COM3
77 COM2 OUT
OUT
78 COM1
OUT
79 COM0
IN
80 VL3
3-16
Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46
terminal while one of G7 line keys on key matrix is touched.
Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46
terminal while one of G6 line keys on key matrix is touched.
Terminal not used.
Terminal not used.
Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46
terminal while one of G3 line keys on key matrix is touched.
Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46
terminal while one of G2 line keys on key matrix is touched.
Key strobe signal. Signal applied to touch-key section. A pulse signal is input to P43-P46
terminal while one of G1 line keys on key matrix is touched.
Terminal not used.
Hood lamp driving signal.
To turn on and off relay(RY5). "L" level: During
Hood lamp ON. "H" level: During Hood lamp OFF.
Terminal not used.
Hood motor driving signal.
To turn on and off relay(RY4). "L" level: During
Hood motor ON. "H" level: During Hood motor OFF.
Terminal not used.
Terminal not used.
Segment data signal.
Connected to LCD.
The relation between signals are as follows:
SEG 21 (51) -------------------- SEG 21 ( 1)
SEG 20 (52) -------------------- SEG 20 ( 2)
SEG 19 (53) -------------------- SEG 19 ( 3)
SEG 18 (54) -------------------- SEG 18 ( 4)
SEG 17 (55) -------------------- SEG 17 ( 5)
SEG 16 (56) -------------------- SEG 16 ( 6)
SEG 15 (57) -------------------- SEG 15 ( 7)
SEG 14 (58) -------------------- SEG 14 ( 8)
SEG 13 (59) -------------------- SEG 13 ( 9)
SEG 12 (60) -------------------- SEG 12 (10)
SEG 11 (61) -------------------- SEG 11 (11)
Connected to GND.
Connected to VC.
Terminal not used.
Common data signal: COM2.
Connected to LCD signal COM2.
Common data signal: COM1.
Connected to LCD signal COM .
Common data signal: COM0.
Connected to LCD signal COM0.
Power source voltage input terminal.
Standard voltage for LCD.
ON
ON
SEG 10 (62) --------------------- SEG1 0( 1 2)
SEG 9 (63) ---------------------- SEG 9 (13)
SEG 8 (64) ---------------------- SEG 8 (14)
SEG 7 (65) ---------------------- SEG 7 (15)
SEG 6 (66) ---------------------- SEG 6 (16)
SEG 5 (67) ---------------------- SEG 5 (17)
SEG 4 (68) ---------------------- SEG 4 (18)
SEG 3 (69) ---------------------- SEG 3 (19)
SEG 2 (70) ---------------------- SEG 2 (20)
SEG 1 (71) ---------------------- SEG 1 (21)
SEG 0 (72) ---------------------- SEG 0 (22)
H : G ND
OFF
L
H : G ND
OFF
L