HP Officejet LH 6000 User Manual Page 75
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- TROUBLESHOOTING
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Chapter 5 Troubleshooting
69
a. Turn off AC power.
b. Disconnect the power cords for 10 minutes in order to reset the power supply's circuitry.
c. Turn on AC power again.
If power is still not getting to the system board, replace the power supply (or power supply
module on some HP NetServer models).
6. If power is getting to the fan but the fan isn't working, replace the fan (or replace the power
supply in HP NetServer models with fans incorporated in the power supply).
7. If the problem continues, replace the power supply module.
8. If, after replacing the power supply, the problem persists:
a. Remove all accessory boards, including any hard disk drive controller board or the video
board the customer might have installed, and reboot the system.
b. Disconnect all mass storage power cords and cables (except those to the boot device) and
reboot the system.
9. If the problem goes away, reinstall the original suspected part to verify that it is causing the
problem.
SCSI Subsystem Problems
Symptoms:
The external SCSI subsystem does not work after installation.
If the external SCSI subsystem does not work after installation, do the following:
1. Review the Troubleshooting Checklist and read "Mass Storage Guidelines" section in
Chapter 2.
2. Run the DiagTools and verify the integrity of the SCSI buses, and other switch settings on the
external storage devices are correct. Verify that each SCSI device is assigned a unique SCSI
ID.
3. Refer to the documentation that came with the SCSI devices for any specific information on
installing them.
4. Make sure that any installed SCSI controller is installed and configured correctly.
5. For any SCSI devices installed in an enclosure external to the HP NetServer chassis, make
sure that Ultra SCSI is disabled on this controller. SCSI devices external to the HP NetServer
chassis are supported in Fast SCSI mode only.
6. Check the SCSI cables for problems that may have been caused by recent computer
maintenance, hardware upgrades, or physical damage.
7. Check the ROM BIOS version to make sure it is the most recently issued version. Booting the
most recent version of the HP NetServer Navigator CD-ROM will automatically report if the
BIOS is not current and needs updating (“flashing”). Follow the instructions in the screen to
update the BIOS.
8. Check that the external SCSI subsystem BIOS is being executed properly.
◊
◊◊
◊ When you start the server, the incrementing count of the RAM appears on the screen. Then
the external SCSI BIOS displays a banner and a copyright notice.
◊
◊◊
◊ The BIOS then checks for valid devices on the SCSI bus, and reports which devices are
found. If you have installed and configured the SCSI devices correctly, you will see a list
confirming all SCSI devices installed in the system.
- HP NetServer LH 6000/LH 6000r 1
- Service Manual 1
- Audience Assumptions 2
- Contents 3
- 1 General Information 7
- (1) Unlock the bezel 8
- Anti-Tip 10
- Top Cover 11
- Right Cover 11
- Bottom Cover 11
- Top Cove 12
- Chapter 1 General Information 13
- 13
- Front View 15
- Rear View 16
- Lights and Indicators 16
- Power status 18
- LED aperture 18
- Power (Green) 19
- Main Menu 20
- Event Log Menu 21
- 2 System Information 23
- Serial Port Connector 24
- Parallel Port Connector 25
- Mini-DIN Connectors 26
- Memory Guidelines 27
- Mass Storage Guidelines 28
- Accessory Board Guidelines 29
- HP NetRAID Guidelines 30
- Processors Guidelines 31
- Technical Specification 32
- Environment Specifications 33
- Dimensions 33
- Switch Settings 34
- Switches 1 and 4 35
- System Board Illustration 36
- I/O Board Illustration 37
- Chapter 2 System Information 38
- 3 Parts Information 39
- Chapter 3 Parts Information 40
- Exploded View - Mass Storage 41
- Exploded View - Exhaust Fans 43
- Replaceable Parts List 44
- Keyboards 47
- Power Cords 47
- Cabling Diagram 47
- HP NetServer LH6000/LH6000r 48
- Cabling: Power 48
- Cabling: Data 48
- 4 Diagnostics 49
- HP NetServer DiagTools 50
- POST Routines 52
- Beep Codes 53
- Error Messages 54
- Chapter 4 Diagnostics 55
- 5 Troubleshooting 61
- The System Will Not Power Up 63
- The System Will Not Boot 63
- Intermittent Failures 63
- Switches 1 and 4 of 64
- S1, shown in the ON 64
- Password Problems 65
- BIOS Recovery 66
- Troubleshooting Checklist 67
- General System Problems 68
- • power supply failure 69
- Memory Problems 70
- CD-ROM Problems 71
- Flexible Disk Drive Problems 72
- Keyboard and Mouse Problems 73
- Power Problems 74
- SCSI Subsystem Problems 75
- Chapter 5 Troubleshooting 76
- Video/Monitor Problems 79
- Configuration Problems 81
- Status LED 82
- Indicator 82
- Processor Problems 83
- Printer/DataComm Problems 84
- 6 Replacing Parts 85
- Replacing the Control Panel 86
- Replacing the HP NetRAID DIMM 87
- Replacing the System Battery 88
- Unplug cable 90
- Backplane 90
- Battery Backup Module (BBM) 90
- Replacing System Memory 91
- Insert DIMMs in Matched Pairs 93
- Replacing a Processor 94
- Replacing a VRM 95
- Removing a Rear Chassis Fan 97
- Replacing the I/O Fans 98
- Replacing the Processor Fans 98
- Removing a Processor Fan 99
- Chapter 6 Replacing Parts 100
- Remove cage mounting screws 100
- Replacing the I/O Board 101
- Disconnecting the I/O Board 102
- Replacing the Processor Board 103
- Processor Board 104
- Replacing the System Board 105
- Hot-Swap Board Assembly 109
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