Chapter 3: Replacing Pre-Installed Components
45
J3 LAN/ID LED Connector
FAN Signal Related Connector Pin Definition
NOTE:
The FAN signal naming is based on HW circuit design only. It might
be different from the system fan naming.
J4 Fan TACH & PWM Connector
J7 Fan TACH & PWM Connector
J8 PWM Connector
1
L
2
LAN1_LED-
3
L
4
LAN2_LED-
5
L
6
LAN3_LED-
7
8
ID_LED-
9
ID_SW+
10
ID_SW-
11
KEY PIN
12
NC
1
GND
2
NC
3
FAN1_TACH
4
PWM1 (Default)
1
GND
2
NC
3
FAN7_TACH
4
PWM1 (Default)
1
GND
2
PWM2
3
FAN1_TACH
Summary of Contents for B3970-U
Page 1: ...Transport GT20 B3970 U Service Engineer s Manual ...
Page 2: ......
Page 16: ...8 Chapter 1 Overview 1 5 5 Motherboard S3970 Block Diagram ...
Page 17: ...Chapter 1 Overview 9 1 5 6 Motherboard Layout ...
Page 38: ...30 Chapter 2 Setting Up NOTE ...
Page 62: ...54 Chapter 3 Replacing Pre Installed Components NOTE ...
Page 75: ...67 NOTE ...