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SY-7ISA Quick Start Guide
10
Hardware
Installation
Step 6. CNR MR Card-CODEC OPTION (JP8)
CNR MR Card-CODEC
OPTION
Primary Secondary
JP8 Setting open JP8 short JP8
Step 7. Set JP9 for FWH Boot Block Write-Protect
Setting this jumper to open will prevent the boot block area of the FWH (FirmWare Hub) chip
from being written data into such that it is write-protected from unwanted or abnormal write
activity.
Note
: In some rare cases, the boot block area will need to be flashed to complete the BIOS
upgrade procedure. Setting JP9 to open will cause incomplete BIOS update in that case.
The FWH Boot Block
Write-Protect
Locked Unlocked
JP9 Setting open JP9 short JP9
Step 8. SPEAKER OPTION (JP22)
Through this jumper the case speaker output can be redirected to the external (amplified)
speakers (if connected) through the on-board Audio-Codec.
SPEAKER OPTION
Lineout SPK CASE SPK
JP22 Setting
Short pin 1-2 Short pin 2-3
1
2
1
2
1
2
1
2
1
2
3
1
2
3