Vaio notebooks have made great progress in the Chinese market. Its powerful performance has been loved by the masses. We are In the process of using Vaio notebooks, some common problems will inevitably occur, which makes us very troubled. However, it is very troublesome to send it for repair. How can we solve these problems without going to a repair shop? Let's take a look below. Repair common faults of vaio notebooks.
Vaio notebook maintenance:
1. No power supply:
The power circuit of vaio notebook needs to have corresponding voltage to cooperate with each other. To form a complete boot circuit, the voltage needs to be measured to get it. Measure DVMAIN, H8VDD5, +5VAS, +5V, +5VS, VCCA, VCCP, +3V_ICH, +1.8V_ICH +12V, DDR2.5V, +3V_LAN, +3VCLK66,+3VCLKCPU,+3VCLKPCI,3V_USB.
In addition, we also need to understand the relevant signals of the startup circuit of the vaio notebook power supply. These signals are PCIRST, PWRSW, H8-RESET, IDEREST, VCC5M_ON_PMH4, THERMDA, H8_SDA1, etc. etc. These signals are very necessary. All vaio notebook motherboards need to follow certain principles to operate normally. The principle is the architectural design principle of vaio notebook motherboards.
2. There is no display when charging: < /p>
The failure of the vaio notebook to charge but no display may occur due to multiple situations. The first situation is that the voltage fails. We must first check the voltage of the vaio notebook. If there is no problem with the voltage, it is due to other reasons;
The second situation may be due to a problem with the vaio notebook signal. In this case, we will measure the signals of the vaio notebook one by one. The measured signals include SMB_CLK, CPU_STP, PCI_STP, CLK_ENABLE, USBCLK_48M, LPCCLK_H8, etc. , after completing the measurement of the signal light, the vaio laptop can be repaired. Other situations include the quality of the memory of the vaio notebook, the quality of the graphics card, the quality of the signal output of the LCD screen, etc.
The above is an introduction to the common fault repairs of vaio notebooks. After understanding these introductions, we can easily find the causes and repairs of vaio notebook failures.