HP LH4r HP Netserver Service Handbook, Volume 2 - Mid - Page 58

System Board Jumpers and Switches, Processors

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System Board Jumpers and Switches The following table explains all connector points, sockets, and switches on the system board. Num. Purpose J1 Keyboard J3 Video Connector J5 Serial A J7 Parallel J13 Optional Battery J15 Power Connector J17 Embedded AT (IDE) Controller Hard Drive Connector J19 HD Activity Light J24 CPU Fan Connector (**) J26 Speaker Connection U18, U19 SCSI Terminator U80, U81 Video DRAM Sockets (*) make sure pins 1 and 2 are jumpered (**) not used at this time Num. J2 J4 J6 J8-J12 J14 J16 J18 J20-J23 J25 U87 SW1 Purpose Mouse Connector External SCSI connector Serial B Accessory Boards Slots Internal SCSI Connector Flexible Disk Drive Connector Control Header (*) Memory Sockets (SIMMs) Control Panel Connection ZIF Microprocessor Socket System Board Switches Processors Processor HP or Intel P/N 486/33DX D2169A (HP) OverDrive/33 D2172A (HP) i486DX2/66 A80486DX2-66 SX OverDrive/66 ODP486SX-66 DX OverDrive/66 ODPR486DX-66 DX OverDrive/66 ODP486DX-66 Switch Block SW1 Pin Type Switch 6 Switch 7 DX OFF ON 487 ON OFF DX OFF ON 487 ON OFF DX OFF ON 487 ON OFF 50

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50
System Board Jumpers and Switches
The following table explains all connector points, sockets, and switches on the system board.
Num.
Purpose
Num.
Purpose
J1
Keyboard
J2
Mouse Connector
J3
Video Connector
J4
External SCSI connector
J5
Serial A
J6
Serial B
J7
Parallel
J8-J12
Accessory Boards Slots
J13
Optional Battery
J14
Internal SCSI Connector
J15
Power Connector
J16
Flexible Disk Drive Connector
J17
Embedded AT (IDE) Controller Hard
Drive Connector
J18
Control Header (*)
J19
HD Activity Light
J20-J23
Memory Sockets (SIMMs)
J24
CPU Fan Connector (**)
J25
Control Panel Connection
J26
Speaker Connection
U18,
U19
SCSI Terminator
U87
ZIF Microprocessor Socket
U80,
U81
Video DRAM Sockets
SW1
System Board Switches
(*) make sure pins 1 and 2 are jumpered
(**)
not used at this time
Processors
Switch Block SW1
Processor
HP or Intel P/N
Pin Type
Switch 6
Switch 7
486/33DX
D2169A (HP)
DX
OFF
ON
OverDrive/33
D2172A (HP)
487
ON
OFF
i486DX2/66
A80486DX2-66
DX
OFF
ON
SX OverDrive/66
ODP486SX-66
487
ON
OFF
DX OverDrive/66
ODPR486DX-66
DX
OFF
ON
DX OverDrive/66
ODP486DX-66
487
ON
OFF