Table 6. Troubleshooting charts (continued)

Device

Suggested action

 

 

The monitor displays video

The monitor attached to the BladeCenter T management module normally shows the

for blade server 8 during

video output from the blade server that is the current owner of the keyboard, video,

management module restart.

and mouse (KVM). When there is no actively selected video from any blade server,

 

the video from blade server 8 is routed to the management module. While the

 

management module is restarting, there is temporarily no current KVM owner. The

 

video from blade server 8 displays on the monitor briefly until the management

 

module uses its NVRAM values to reestablish ownership of the KVM and media tray

 

(CD-ROM drive, diskette drive, and USB port). After that, the video from the blade

 

server that is the current KVM owner displays on the monitor.

 

 

The screen is blank.

Make sure that:

 

1. The input and output indicators on the power supplies are lit, indicating that input

 

and output power are present.

 

2. The monitor cables are connected properly.

 

3. The KVM module LEDs indicate that the module is functioning.

 

4. The monitor is turned on and the brightness and contrast controls are adjusted

 

correctly.

 

5. The monitor is owned by a blade server that is turned on and supports the KVM

 

feature.

 

6. If you have verified these items and the screen remains blank, replace:

 

a. Monitor

 

b. KVM module

 

Note: Some IBM monitors have their own self-tests. If you suspect a problem

 

with your monitor, see the information that comes with the monitor for adjusting

 

and testing instructions.

 

 

Only the cursor appears.

See “Undetermined problems” on page 104.

 

 

The screen is wavy,

If the monitor self-tests show that the monitor is working properly, consider the

unreadable, rolling, distorted,

location of the monitor. Magnetic fields around other devices (such as transformers,

or has screen jitter.

appliances, fluorescent lights, and other monitors) can cause screen jitter or wavy,

 

unreadable, rolling, or distorted screen images. If this happens, turn off the monitor.

 

(Moving a color monitor while it is turned on might cause screen discoloration.) Then

 

move the device and the monitor at least 305 mm (12 in.) apart. Turn on the monitor.

 

Notes:

 

1. To prevent diskette drive read/write errors, be sure the distance between monitors

 

and diskette drives is at least 76 mm (3 in.).

 

2. Non-IBM monitor cables might cause unpredictable problems.

 

3. An enhanced monitor cable with additional shielding is available for the 9521 and

 

9527 monitors. For information about the enhanced monitor cable, contact your

 

IBM reseller or IBM marketing representative.

 

If the problem remains, replace the monitor.

 

 

Wrong characters appear on

If the wrong language is displayed, update the firmware in the management module

the screen.

with the correct language. If the problem remains, replace the management module.

 

 

Mouse problems

 

 

 

Mouse function lost during

If, while installing Red Hat Linux to a blade server, you or someone else selects a

Red Hat installation.

different blade server as owner of the keyboard, video, and monitor (KVM), you might

 

lose mouse function for the installation process.

 

Do not switch KVM owners until the installation process begins to install the

 

packages (after the ’About to Install’ window).

 

 

96BladeCenter T Type 8720 and 8730: Hardware Maintenance Manual and Troubleshooting Guide

Page 105 Page 107
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IBM Type 8730, Type 8720 manual Mouse problems
Page 105 Page 107

Type 8730, Type 8720 specifications

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