This chapter lists solutions to these problems:
Indication |
Test/Procedure |
Reference |
---|---|---|
No AC Fans are not turning No LEDs |
Check incoming AC power.
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Check keyswitch setting. | ||
Check AC distribution unit switch
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See Figure 11-2. |
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No DC or yellow LED is lighted
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Check system front panel LEDs or clock+ board LEDs.
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See Table 9-1. |
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Check PCMs.
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Check peripheral power supply.
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Check CPU/Memory+ boards.
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If clock+ board is faulty, system operation/diagnostics may be erratic.
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System error messages
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Check LEDs on: --Front panel --Clock+ board --Peripheral power supply --PCMs --CPU/Memory+ boards --I/O+ boards |
See Chapter 9, Troubleshooting Overview.
|
Indication |
Test/Procedure |
Reference |
---|---|---|
System cannot boot or cannot load UNIX |
Check LEDs on front panel or clock+ board.
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See Table 9-1 for LED codes. |
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Are CPU/Memory+ board LEDs cycling?
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See Table 9-2 for LED codes.
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Is boot disk running?
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Is OpenBoot set to boot automatically?
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In OpenBoot, check system status: -- Connect a terminal to serial port A on the clock+ board -- Reset the system -- Type v s -- Select system configuration: option 0 -- Select: option 2 -- Replace indicated components
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System boots with errors or runs with intermittent problems |
Check message files.
| |
Run SunVTS to test suspected boards, CPUs, SIMMs, power supplies, other devices.
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Refer to SunVTS User's Guide. |
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Start prtdiag log file to collect error messages.
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See "Running prtdiag". |
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"Lost carrier" or "no carrier." |
CPU/Memory+ boards are hot-pluggable.
Table 10-3 CPU/Memory+ Board Problems
Indication |
Test/Procedure |
Reference |
---|---|---|
System error message or LED code identifies a specific board |
Locate indicated board. |
LED code must be Off-On-Off. See Table 9-2. |
Check LEDs on board to verify ASR has deactivated the board.
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See "Hot-Plug Feature". |
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Replace the board or device. (Note: board is not active until system is booted.)
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Board not identified or intermittent problem |
Check /var/adm/messages | |
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Run SunVTS to test suspected boards, CPUs, SIMMs, power supplies, other devices.
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Refer to SunVTS User's Guide. |
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Check related modular power supply. |
See Table 10-7. |
Interface boards are hot-pluggable in many instances.
Table 10-4 I/O Interface
Indication |
Test/Procedure |
Reference |
---|---|---|
System error message or LED code identifies a specific board |
Locate indicated board. |
LED code must be Off-On-Off. See Table 9-2. |
Check LEDs on board to verify ASR has deactivated the board.
|
See "Hot-Plug Feature". |
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Replace the board or device. (Note: board is not active until system is booted.)
|
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Board not identified or intermittent problem |
Check system message files. |
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Start prtdiag log file, if necessary, to record error messages.
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See "Running prtdiag". |
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Run SunVTS to test suspected boards, CPUs, SIMMs, power supplies, other devices.
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Refer to SunVTS User's Guide. |
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Check I/O cable connections.
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Ensure JTAG Test Jumper on PCI cards is disabled/removed.
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Check related PCM. |
See Table 10-7. |
The disk board is hot-pluggable.
Table 10-5 Disk Board Problems
Indication |
Test/Procedure |
Reference |
---|---|---|
System error message or LED code identifies a specific board
|
Locate indicated board. |
LED code must be Off-On-Off. See Table 9-2. |
Check LEDs on board to verify ASR has deactivated the board.
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Set the SCSI IDs of the replacement drives.
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Replace the board or device.
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See "Hot-Plug Feature". |
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Note: board is not active until system is booted.
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Board not identified or intermittent problem |
Check /var/adm/messages
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Locate defective SCSI device with probe-scsi-all (OpenBoot command).
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Check ID jumpers on board.
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Indication |
Test/Procedure |
Reference |
---|---|---|
System error message or device code identifies a specific fault |
Check system messages to locate failed drive.
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Halt access to device and power down the device or array.
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Internal drives: Chapter 7. Array: service manual for the array. |
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Set ID code (if used) on replacement device before installing.
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See Table C-2, or refer to drive or array documentation for ID code. |
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If replaced unit is SPARCstorage Array or the array controller board, reset world-wide name (WWN).
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Refer to SPARCstorage Array documentation. |
Device not identified or intermittent problem |
Run SunVTS.
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Refer to SunVTS User's Guide. |
For SCSI device, use OpenBoot probe-scsi-all.
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Check cable connection.
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If replaced unit is SPARCstorage Array or the array controller board, reset world-wide name (WWN). |
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The peripheral power supply and power/cooling modules are hot-pluggable.
Boards in slots adjacent to a modular power supply may overheat if the supply is removed and not replaced. The modular power supply provides cooling air to two board slots.
Do not hot-plug boards or modules if the peripheral power supply is defective. The hot-plug feature requires a working peripheral power supply for precharge current.
Indication |
Test/Procedure |
Reference |
---|---|---|
For Peripheral power supply: System error message Peripheral device fails |
Verify module is ready: --Green LED off. --Yellow LED may be on.
| |
|
Before replacing any other hot-pluggable devices, replace faulty peripheral power supply to ensure availability of precharge current.
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|
For PCM: System error message Board fails |
Verify PCM is ready: --Green LED off. --Yellow LED may be on. |
See "Replacing a PCM". |
There is one clock+ board in the system.
The clock+ board is not hot-pluggable. You must halt the operating system and turn off AC power before replacing the clock+ board.
Indication |
Test/Procedure |
Reference |
---|---|---|
System will not boot
|
Examine LED displays. |
See Table 9-1. |
Clock+ board yellow "service" LED does not light during POST or remains lighted after POST
|
Check clock+ board. |
|
System and board LEDs do not flash, or fail POST repeatedly with random LED patterns
|
Check clock+ board and power supplies. |
See Table 10-7. |
TTY port A does not respond |
Check settings for the port. Replace peripheral power supply. |
See "Using a Terminal". |
Indication |
Test/Procedure |
Reference |
---|---|---|
Network does not respond |
Use the OpenBoot command watch-net-all to display network conditions
| |
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(For 10BASE-T only) Is Ethernet Link Integrity Test set incorrectly?
| |
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Are the TPE and MII ports in use at the same time on the same board? |