Installing and Replacing Desktop Board Components 
47 
Table 11. Front Panel CIR Receiver (Input) Header Signal Names  
Pin Signal Name  Pin Signal Name 
1   Ground  2  LED 
3 No Connection  4 Learn-In 
5  +5 V Standby  6  Vcc 
7  Key (no pin)  8  CIR Input 
 
Table 12. Back Panel CIR Emitter (Output) Header Signal Names  
Pin Signal Name  Pin Signal Name 
1   Emitter Out 1  2  Emitter Out 2 
3 Ground  4 Key (no pin) 
5  Jack Detect 1  6  Jack Detect 2 
 
S/PDIF Header 
Figure 18, G shows the location of the S/PDIF output header.  Table 13 shows the pin 
assignments and signal names for the S/PDIF output header. 
Table 13. S/PDIF Header Signal Names 
Pin Description 
1 Ground 
2 S/PDIF Out 
3  Key (no pin) 
4 +5 VDC