Network Problems; Observable Problems - Lenovo ThinkSystem SR860 Maintenance Manual

The monitor has screen jitter, or the screen image is wavy, unreadable, rolling, or distorted.
1. If the monitor self-tests show that the monitor is working correctly, consider the location of the monitor.
Magnetic fields around other devices (such as transformers, appliances, fluorescents, and other
monitors) can cause screen jitter or wavy, unreadable, rolling, or distorted screen images. If this
happens, turn off the monitor.
Attention: Moving a color monitor while it is turned on might cause screen discoloration.
Move the device and the monitor at least 305 mm (12 in.) apart, and turn on the monitor.
Notes:
a. To prevent diskette drive read/write errors, make sure that the distance between the monitor and any
external diskette drive is at least 76 mm (3 in.).
b. Non-Lenovo monitor cables might cause unpredictable problems.
2. Reseat the monitor cable.
3. Replace the components listed in step 2 one at a time, in the order shown, restarting the server each
time:
a. Monitor cable
b. Video adapter (if one is installed)
c. Monitor
d. (Trained technician only) System board.
The wrong characters appear on the screen
Complete the following steps until the problem is solved:
1. Verify that the language and locality settings are correct for the keyboard and operating system.
2. If the wrong language is displayed, update the server firmware to the latest level. See "Firmware
updates" on page 5.

Network problems

Use this information to resolve issues related to networking.
• "Could not log in using LDAP account with SSL enabled" on page 181
Could not log in using LDAP account with SSL enabled
Complete the following steps until the problem is resolved:
1. Make sure that the license key is valid.
2. Generate a new license key and log in again.

Observable problems

Use this information to solve observable problems.
• "Server hangs during the UEFI boot process" on page 182
• "The server immediately displays the POST Event Viewer when it is turned on" on page 182
• "Server is unresponsive (POST is complete and operating system is running)" on page 182
• "Server is unresponsive (cannot press F1 to start System Setup)" on page 183
• "Voltage planar fault is displayed in the event log" on page 183
• "Unusual smell" on page 183
.
Chapter 4 Problem determination
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