4-23
TROUBLESHOOTING
“Confidential, Do Not Duplicate without written authorization from NEC.”
12V
1
f
12V Input
12V
2
GND
3
–
GND
5V
4
f
5V Input
GND
5
–
GND
I2C_SCL
6
f
I2C communication between uC BD and Fan Driver BD
I2C_SDA
7
n
FAN_Driver BD_Flag
8
g
If FAN actual RPM is out of the programmed value, ALERT pin
goes low.
–
9
–
–
FG1
1
f
FAN Speed indication. (Pluse)(5V)
Vout
2
g
Fan voltage out
GND
3
–
GND
FG1
1
f
FAN Speed indication. (Pluse)(5V)
Vout
2
g
Fan voltage out
GND
3
–
GND
–
4
–
–
1-3-4. Fan Driver Board – C side
CN9811
CN9813
CN9810
CN9812
CN9814
Fan Driver BD – C side
J9810 From SLAVE uC BD (J8)
Note: Pin to Pin
J9811 for Fan8
J9812 for Fan6
Содержание NP-NC900C-A
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