Jumpers/Switches/Controls
Jumpers/Switches/Controls
Jumpers and Switches
Configuration Jumpers
TDV Jumper J4H1
Video Sleep Jumper J6A1
BIOS Program Boot Block Jumper J7C1
BIOS Boot Block Jumper J7D2
FD0/FD1 (Floppy Drive 0/1) Jumpers J9C1 and J9B1
Power Control Jumper J9C3
Configuration Switch S8C1
CMOS S8C1-1
Password S8C1-2
Flash Memory S8C1-3
Controls and Indicators
Configuration Jumpers
Jumper Pins Description
J4H1, TDV *1 2 (Enable) Enables the CPU 2 (secondary) slot to accept
TDV modules
23 (Disable) Prevents the CPU 2 slot from accepting TDV
modules (allows X-series modules)
J6A1, Video Sleep 12 (REG 46E8) Selects address register at 46E8H
*23 (REG 3C3) Selects address register at 03C3H
J7C1, Program Boot *12 (Disable) Prevents writing to the BIOS boot block
Block 23 (Enable) Enables writing to the BIOS boot block.
WARNING: J7C1 should never be moved from its default setting.
J7D2, Boot Block *12 (Disable) Normal BIOS boot block
23 (Enable) Recovery BIOS boot block
J9B1, FD1 (Floppy *12 (1.44 MB) Disables 2.88 MB size detection
Driver 1) 23 (2.88 MB) Enables automatic size detection
J9C1, FD0 (Floppy *12 (1.44 MB) Disables 2.88 MB size detection
Driver 0) 23 (2.88 MB) Enables automatic size detection
J9C3, Pwr Ctrl *12 (Enable) Disables RTC power control
23 (Disable) Enables power supply maintenance voltage
control using the RTC
* Factory default setting
TDV Jumper J4H1
When pins 1 and 2 are jumpered (default), a TDV module can be used in the CPU2 (secondary) slot on the system board. Changing the jumper setting to 2 and 3 prevents the CPU 2 slot from accepting TDV modules (allows 32-bit X-series modules).
To change the jumper setting:
1. Remove the side cover and ECC memory modules. See Removing and Replacing Parts.
2. Move the jumper to pins 2 and 3 to allow the CPU 2 slot to accept 32 bit X-series modules.
3. Replace the CPU module and side cover.
Video Sleep Jumper J6A1
If there is no keyboard activity after a specified time-out period (1 to 128 minutes), the video sleep register blanks out the monitor screen. When this happens, a password must be entered to reactivate the monitor and the keyboard.
The video sleep jumper determines which I/O port the onboard Cirrus Logic CL-GD5424 super VGA controller uses for its internal AT mode setup port. The starting address of the default port is 03C3H.
To change the starting address to 46E8H, do this:
1. Remove the side cover and the CPU module from slot CPU 1. See Removing and Replacing Parts.
2. Move the jumper to pins 1 and 2 (REG 46E8H) to change the address.
3. Replace the CPU module and side cover.
BIOS Program Boot Block Jumper J7C1
WARNING: J7C1 should never be moved from its default setting or the system board may be rendered inoperable.
BIOS Boot Block Jumper J7D2
The boot block jumper enables the BIOS flash memory special recovery mode. The system BIOS can be corrupted for example, when the update procedure is aborted due to a power outage. The flash memory contains a protected area that cannot be corrupted. Code in this area is used to boot the computer from drive A when the BIOS has been corrupted. After booting, the flash memory update utility is used to automatically recover the system BIOS from the BIOS recovery files on the diskette.
NOTE: If users map the BIOS of an add-in board to any part of the E0000H address range, they must either map it to another area or physically remove the board from the system before a recovery procedure can be completed. They do not have to remove add-in boards for normal BIOS updates.
To recover the BIOS:
1. Remove the side cover and the CPU module from slot CPU 1. See Removing and Replacing Parts.
2. Move the jumper to pins 2 and 3 to enter the recovery mode.
3. Replace the side cover and CPU module, and insert the flash memory update diskette in drive A.
4. Connect the power cord to the system and turn it on. After the system boots successfully, the speaker emits a single beep and the recovery process startsit takes about three minutes. When the recovery process completes, the system speaker emits two beeps.
5. While in the recovery mode, there is no screen display on the monitor, and the keyboard is disabled as the system automatically recovers the BIOS. The recovery status is identified through beep codes.
6. Turn the system off. Remove the side cover and the CPU module from slot CPU 1.
7. Move the jumper to pins 1 and 2 to return to the normal boot mode.
8. Replace the side cover and CPU module, and remove the flash memory update diskette from drive A.
9. After running the special recovery mode, run the SCU to specify a new password. See Using the System Configuration Utility.
FD0/FD1 (Floppy Drive 0/1) Jumpers J9C1 and J9B1
This jumper configures the floppy port for 2.88 MB drives that support automatic size detection.
1. Remove the side cover and the ECC memory module from slot MEM 1. See Removing and Replacing Parts.
2. Move the jumper to pins 2 and 3 to select the 2.88 MB diskette drive type.
3. Replace the CPU module and side cover.
Power Control Jumper J9C3
This jumper (Pwr Ctrl) enables power supply maintenance voltage control using the RTC.
To disable the RTC power control, do this:
1. Remove the side cover and the ECC memory module from slot MEM 1. See Removing and Replacing Parts.
2. Move the power control jumper to pins 2 and 3.
3. Replace the side cover and ECC memory module.
ConfigurationSwitchS8C1
The configuration switch on the system board contains three switches. To change a setting, slide the switch to the desired position.
Switch Position Function
S8C1-1 On Clear CMOS
Off* Protect CMOS
S8C1-2 On Clear password
Off* Enable password
S8C1-3 On* Enable flash write
Off Disable flash
* Factory default setting
CMOS S8C1-1
Setting this switch to ON clears CMOS and sets it and the RTC to the manufacturing defaults during system reset. Setting it to OFF preserves the settings during system reset.
To reset the system's CMOS and RTC chip to factory default values:
1. Observe the precautions in Before You Begin.
2. Remove the side cover and ECC memory modules. See Removing and Replacing Parts.
3. Slide the switch to ON; replace the ECC memory modules and side cover, and connect the power cord to the system.
4. Turn the system on, and wait for POST to complete. This automatically reprograms the CMOS and RTC to their default settings.
5. Turn the system off, disconnect the power cord from the system, and remove the side cover and ECC memory modules.
6. Slide the switch to OFF; replace the ECC memory modules and side cover, and connect the power cord to the system.
7. After resetting the CMOS, run the SCU to configure the system. See Using the System Configuration Utility.
Password S8C1-2
Setting this switch to ON clears the password when the system is reset. Setting it to OFF lets the user enter a password.
To clear and enter the password:
1. Remove the side cover and ECC memory modules. See Removing and Replacing Parts.
2. Slide the switch to ON to clear the password.
3. Replace the ECC memory modules and side cover, and connect the power cord to the system.
4. Turn the system on, and wait for POST to complete. This automatically clears the password.
5. Turn the system OFF, disconnect the power cord, and remove the side cover and ECC memory modules.
6. Slide the switch to OFF to enter and preserve a new system password.
7. Replace the ECC memory modules and side cover, and run the SCU to specify a new password. See Using the System Configuration Utility.
Flash Memory S8C1-3
Setting this switch to ON applies + 12 V power to the VPP pin on the flash memory device that allows the user to modify the contents of flash memory. Setting it to OFF write-protects the contents of flash memory.
Controls and Indicators
The controls and indicators illustration shows the front panel door (opened), the front panel, the location of the server controls and lights, the four external peripheral bays, and the 3.5-inch diskette drive.
A. Diskette drive ejector button: when pressed, ejects the disk.
B. Diskette drive activity light: when lit, indicates the drive is in use.
C. DC power push-button switch: when pressed, turns the system DC power on or off.
D. Reset push-button switch: when pressed, resets the system and causes the POST to run.
E. Front panel status lights:
 Top light (power on/off): when lit, indicates the presence of DC power in the system. The light goes out when the power is turned off or the power source is disrupted.
Second light from top: when lit, indicates an IDE hard-disk drive or SCSI device on channel A is in use.
Third light from top: when lit, indicates a SCSI device on channel B is in use.
Bottom light: when lit, indicates drive fault.
F. LCD panel: when enabled, displays system information.
G. Six sets of three hot-docking bay status lights:
Left light: when on continuously, indicates drive present and power on.
Middle light: when flashing, indicates drive activity.
Right light: when on continuously, indicates drive fault.
Beep Code Message
2 Successful completion, no errors.
4 The system could not boot from the diskette. The diskette may not be
bootable.
Continuous series The wrong BIOS recovery files are being used and/or the flash memory
of low beeps switch S8C1-3 is in the wrong position.
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