Usage of the motherboard detection card-repair the machine that is not bright by the characters displayed on the diagnosis card

The motherboard detection card is an integrated circuit module that provides CPU power supply, memory power supply, resetting signals of the north-south bridge and AO chips, moderate signals, and The rated voltage of the original Bols data database, A comparison of Pulse Signal Evaluation ·
The detection card can be directly inserted into the PCI and ISA slots of the motherboard. If the motherboard is above 845, there is no ISA plug-in, and the PCI interface is directly inserted into the PCI interface of the motherboard, shut down the power supply of the host first. <generally, do not use hot plugging.> !!
There are two parallel LEDs on the detection card, the main board voltage, the signal circuit is verified by the detection card, and then displayed in the form of code: 00, FF, 0d, 31, C1, 56,83, c0 ...... etc!
To put it simply:
1: CPU does not work: 00, FF, FC, C0. At present, only these characters are displayed. If the CPU is too hot, the protection will take off for 2 times and power off automatically. Check whether the CPU is properly inserted, stable, and operated with caution. The needle is very brittle. Do not hot plugging

2: memory problems: C1, 0d, 31, 7f, 83. Currently, only these characters are displayed. The machine directly sends an alarm to determine whether the machine is plugged in or burned out. Do not re-power the machine, 98% burn! The consequences are serious, boys, please remember, do not put in anti-power-on, try it, and never burn it in my experience.

3. Do not hot plug-in, will cause other circuit faults, be sure to pay attention, the motherboard protection circuit work, it means that non-detection card can judge the problem

4: FD is directly displayed if the virus is not highlighted in the Bols. there will be very few such cases. Household brand machines will have such cases, such as moderate Ch. The solution can be written in a soft area by a programmer, which is rare in Internet cafes!

5: If the detection card does not show any display, and the power supply is good, you have to give up the detection, just take the screw and wait for repair! Non-network management can solve the problem.

6: A motherboard needs a self-check keyboard to start up. It is best to correctly Insert the keyboard before detection.

7: Method for Detecting power supply quality: Use a soft wire or a wire, one end is inserted into any black line of The ATX Power Supply interface <grounding> one end is inserted into a unique Green Line <main board power supply circuit main power supply> the power supply will be forcibly turned on, the fan turns good, if not turned bad

8: if the battery capacity of the motherboard is insufficient, the Bols information cannot be saved. It is the most likely to cause the CPU protection circuit action, take care of the battery, the motherboard hard jumper discharge or direct short circuit, to achieve the purpose of discharge, to solve the CPU protection circuit, the motherboard will work normally. Please note that the host is not bright due to power failure!

9: there cannot be obvious gray on the motherboard. This is the premise!

I think it is very important to say that it is too much! This is a little bit of my experience over the past few years. If you know the basics of the circuit, you can also penetrate into and add me QQ in detail !, In fact, it is very easy to say that machines are dead, people are active, and they will observe and listen with their ears.

Guo Xiaofan, intern director of Wuhan jingrui netwei Yitong store

2007.03.22

Director's comment:
Director Guo Xiaofan did leave you with years of practical experience !!! Benefits !!!