Lenovo PC 300 Hardware Maintenance Manual (HMM) for Aptiva, IBM PC300, and Net - Page 125

J12: For 2X11 Pins Jumper, Soft PWR: Soft Power Connector, RES: Reset Switch, Open: Normal Operation

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J19: Front Panel USB Port (Optional) Pin No. 1,4,5,10 2 3,7,9 6 8 Function NC +5V GND USB P0+ USB P0- JP18: SPDIF (Optional) Pin No. Function 1 VCC 2 SPDIF OUT 3 GND JP19: USB Device Wake up Pin No. 1-2 close Function Disable USB Device Wake up (Default). 2-3 close Enable USB Device Wake up. JP20/JP21: Quad Speaker (Optional) Pin No. 1-2 close Function LINE_IN 2-3 close QUAD OUT JP24: FWH Write Protection Pin No. Function Open Normal (Default) Close Write Protection. J12: For 2X11 Pins Jumper GD J12 1 PWR P+P−P− HD GN 1 1 1 RES SPKR Soft PWR: Soft Power Connector RES: Reset Switch Open: Normal Operation Short: Power On/Off Open: Normal Operation Short: For Hardware Reset System 125

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125
±
J19: Front Panel USB Port (Optional)
Pin No.
Function
1,4,5,10
NC
2
+5V
3,7,9
GND
6
USB P0+
8
USB P0-
±
JP18: SPDIF (Optional)
Pin No.
Function
1
VCC
2
SPDIF OUT
3
GND
±
JP19: USB Device Wake up
Pin No.
Function
1-2 close
Disable USB Device Wake up (Default).
2-3 close
Enable USB Device Wake up.
±
JP20/JP21: Quad Speaker (Optional)
Pin No.
Function
1-2 close
LINE_IN
2-3 close
QUAD OUT
±
JP24: FWH Write Protection
Pin No.
Function
Open
Normal (Default)
Close
Write Protection.
J12: For 2X11 Pins Jumper
Soft PWR: Soft Power Connector
Open: Normal Operation
Short: Power On/Off
RES: Reset Switch
Open: Normal Operation
Short: For Hardware Reset System
J12
PWR
P+P
−
P
−
HD
RES
SPKR
GN
GD
1
1
1
1