Difference between revisions of "UMCT FAQ"

Latest revision as of 16:43, 30 June 2015

What to do if the switch shuts down with a blue screen during the runtime?

Reasons and solutions for the blue screen of death during the UMCT runtime:

1） The main control board’s poor heat dissipation may cause a blue screen. If you are using the SSW-08 series UMCT switch, check if the main control board is SCU03 without a fan. If it is, replace it with SCU03-3 which includes a fan.

2） A bad memory bank may cause a blue screen too. Replace it with a good one to confirm or eliminate this possibility.

3） Poor contact between the voice board and the switch may also cause a blue screen. Replug the voice board to exclude this possibility.

4） Hard disk failure may cause a blue screen too. You can use such tool as HDTunePro.exe to test the HD.

How to use the tool HDTunePro in WinPE to check if the hard disk has bad tracks or not?

Preparations:

1. Make a WinPE startup U-Disk.

2. Copy HDTunePE.exe and shfolder.dll to the U-Disk.

Directions:

1. Click ‘Error Scan’.

2. Press ‘Start’. Note: Don’t tick ‘Quick Scan’.

3. Result: Red means bad tracks exist and you need to replace the HD; green is for ok.

What to do if the UMCT switch can't find the HD upon startup?

The factory default value of ‘Integrated Peripheral → Onchip IDE device → on ChipSerial ATA’ in CMOS settings is SATA ONLY. Either the JP1 jumper on the main control board (staying at the 1-2 position by default) or the CMOS battery being moved, the CMOS parameters will reset, and the above value will change to Disable. In such situation, the UMCT switch may not find the hard disk upon startup. To solve this problem, you can open BIOS to reset the CMOS parameters. To be exact, go to ‘Integrated Peripheral → Onchip IDE device → on ChipSerial ATA’, you will see three options: Disable, Combined Mode and SATA ONLY. Choose the third option SATA ONLY.

If the hard disk is still not found at the setting of SATA ONLY, it may be something wrong with the hardware. Please send the machine back to our company to test.

Why does the SSW080B UMCT keep alarming upon startup?

SSW080B UMCT has redundant power supply. If only one power source is provided, the UMCT will keep alarming. Press the red button ‘BUZZER RESWT’ can remove the alarm.

What to do if the USB CD-ROM connected with UMCT cannot be started normally?

Provided no failure occurs in hardware, usually this problem is caused by insufficient power supply using single USB interface. One solution is to connect both USB interfaces on the USB CD-ROM with the UMCT. Another option is to provide power using USB HUB, i.e. connect the USB CD-ROM to a USB HUB with power source using one USB line and use another USB line to connect the interface of the HUB with the UMCT.

How to set the auto-start-upon-power-on feature for the UMCT series SCU03 boards?

Enter the bios interface and select the item “Integrated Peripherals”. See the figure below.

Set the option “SuperIO Device” to “ON”. See the figure below.

Finally, restart the machine to validate the settings.

How to start the UMCT without keyboard?

Press ‘delete’ after starting up to enter CMOS. Enter the option ‘Standard CMOS Features’ and set the ‘Halt On’ configuration to ‘No Errors’ or ‘All, but keyboard’.

How to solve the problem of blank screen upon startup?

1. After plugging in the UMCT, the ‘standby’ indicator on the main panel stays green, indicating that the power line is normal. It goes out upon the startup of the machine; meanwhile the ‘power’ indicator stays green.

2. If the ‘HDD’ indicator does not flash, remove the boards (if there is any) on the UMCT and reboot the machine in order to eliminate the causes such as poor contact and hardware failure. If this still does not work, we basically conclude that the problem is caused by the main board. Please send the machine back to our company to test.

What to do if all parameters (such as Time) of the UMCT are restored to factory settings after power-off and restart?

There are two possible causes as listed below:

1. The CMOS battery (see figure below) is out of power and required to be changed. 2. The jumper switch beside the CMOS battery (see figure below) is not set to “NORMAL”.

Not being used for a time, the SSW080A UMCT fails to start (the pwr indicator is on but the machine has no response after you press the start button) and the PC fails to detect the HD. Such problem disappears after you power off the machine, wait for a short time and then restart it. What is the cause?

It is because the power supply is in the protected mode due to overload or short circuit. In such case, the machine cannot be started until you power it off and wait for a time.

What shall you pay attention to while using UMCT intelligent switches?

When you use a UMCT intelligent switch, we strongly recommend that you use the same power socket for the machine and the display lest the poor grounding cause large difference in voltage which may disable the machine or even burn down the elements.

When the UMCT switch is restarted after abnormal power-off, it can neither transmit nor receive data packets although the network card driver is good. How to solve the problem?

A too quick restart of the device after abnormal power-off results in no reset of some modules and leads to such problem. Wait for at least 10s after power-off before you restart the UMCT switch.