因意外短路，造成xw4600无法启动的原因？

[cadtools]

计算机在正常打开的情况下，因别处电路意外短路，造成关机，致使xw4600无法启动。

现象：
1 机器通电后，主板上的灯亮，但开关无法开启电脑。

2 首次通电（插上电源插座），机器自检，光驱灯可亮，显卡风扇 cpu风扇均可见转动，但约 3~5秒后系统关闭，无法启动，此时主板灯仍然亮。

3、再次按开关，电源等一闪既灭，机器无响应。

求教：

1、最有可能出现的故障部件？

2、最佳检测和维修方法？

谢谢。

[爱老虎油]

HP xw4600 Workstation - Diagnostic LED and Beep Codes

Issue

The workstation does not boot, but shows a LED and beep code.

Solution
Use the Diagnostic LED code to isolate the failure.

NOTE: Workstation beeps are emitted from the chassis speaker. The flashing lights and beeps repeat for five cycles. After five cycles, only the flashing lights repeat.

Blinks red 2 times (once per second), then a 2–second pause, and then 2 beeps.

Thermal shutdown has occurred:

1. Ensure that the workstation air vents are not blocked.

2. Open the access panel and press the workstation power button.

3. Verify that the system fan is running.

4. Verify that the processor heatsink fan spins. If it does not spin, ensure that the fan cable is plugged into the system board connector. Ensure that the heatsink is properly seated.

5. Replace the processor heatsink.

Blinks red 3 times (once per second), then a 2-second pause, and then 3 beeps.

Processor is not installed:

1. Install the processor.

2. Reseat the processor.

3. If the issue persists, replace the processor.

Blinks red 4 times (once per second), then a 2-second pause, and then 4 beeps. Power failure:

1. Perform the power supply self-test.

2. Open the access panel and ensure that the necessary power supply cables are connected to the system board.

3. Locate a faulty device by removing all devices and then reinstalling one at a time until the workstation fails:

a. Disconnect AC power to the workstation.

b. Remove all devices.

c. Reinstall a device.

d. Reconnect AC power. Replace the device causing the failure. Continue adding devices to ensure all are functioning properly.

4. Verify the power supply functionality.

a. Disconnect AC power.

b. Remove all internal power supply cables from the system board.

c. Plug in AC power.

If the power supply fan spins and the LED illuminates, then the power supply is good. Replace the system board.

If the power supply fan does not spin or the LED does not illuminate, replace the power supply.

Blinks red 5 times (once per second), then a 2-second pause, and then 5 beeps Pre-video memory error:

1. Ensure that the memory modules are loaded correctly in pairs.

2. Reseat memory modules.

3. Replace memory modules one at a time to find the faulty module.

4. Replace third-party modules with HP memory.

5. Replace the system board.

Blinks red 6 times (once per second), then a 2-second pause, and then 6 beeps Pre-video graphic card error:

1. Reseat the graphics card. Power on the workstation.

2. Replace the graphic card.

3. Replace the system board.

Blinks red 7 times (once per second), then a 2-second pause, and then 7 beeps System board failure (ROM detected a failure before video):

1. Replace the system board.

Blinks red 8 times (once per second), then a 2-second pause, and then 8 beeps Invalid system ROM based on bad checksum. Entering FailSafe (Boot Block) recovery mode:

1. Reflash the system ROM (FailSafe Boot Block ROM Recovery).

2. Replace the system board.

Blinks red 9 times (once per second), then a 2-second pause, and then 9 beeps System powers on, but is unable to boot:

1. Replace the system board.

2. Replace the processor.

[爱老虎油]

如果没有以上的现象,可以考虑是不会主机电源挂了.

这里不确定楼主说到的短路时在主机内部意外短路还是外部AC供电意外短路。

[爱老虎油]

也可以试试插拔所有组件,清空coms后, 短接coms reset按钮旁边的那个跳线.

xw4600.png

[carrot]

高手！！！这个机机很耗电吧？

[cadtools]

如果没有以上的现象,可以考虑是不会主机电源挂了.

这里不确定楼主说到的短路时在主机内部意外短路还是外部AC供电意外短路。

谢谢老虎的热心。

是外部AC突然短路，非机器内部。

看了上面的英文，只有LED闪，但没有发生（beep是不是滴滴声？）。

回头我再仔细观察后报告情况。

[cadtools]

报告：未见红色色LED灯和声音，只有电源旁边的绿色LED和硬盘旁的绿色LED灯亮，一会既灭。

现象如故。

插拔所有组件，现象如故。

更换显卡，现象如故。

清空COMS（按那个按钮，将绿色的跳线插头拔下插到另一个跳线地方，还原----此方法不知对否），现象如故。

[MUDBOY]

是不是电源烧了？有条件的话换个其他xw4600甚至普通台式机电源然后最小系统组件测试看看

[cadtools]

我也很怀疑电源烧了。但为什么主板上的灯是亮的呢？刚插电时风扇在转呢？

无论是与不是，准备换个电源试试看。

[cadtools]

新情况:把所有的把插件全部拔掉，只剩主板，系统 LED 3红，响三声，此过程重复。
安装CPU，现象如前，不能加电。

是否可判断是CPU坏了？谢谢。