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Address
304 North Cardinal
St. Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
Repair of Shenzhou z7-kp7gz notebook splash screen
[machine model] Shenzhou z7-kp7gz notebook
[mainboard version] gk5cn6x Rev: 1.1
[fault phenomenon] notebook splash screen
[maintenance process]
Received Shenzhou z7-kp7gz notebook, boot display start on splash screen, the kind of crazy flash.No matter moving the screen, there is no change.I started to wonder if it was a screen problem.The machine was disassembled and replaced with a high-resolution screen. It didn’t flash, but the brightness couldn’t be adjusted. I thought whether the original screen would be needed. The original screen was still splash screen.So the direction of the transfer, the measurement screen line, are all connected.That can only be a problem with the motherboard. Open the drawing and locate the screen display interface.As shown in the figure:
Maintenance drawing 1 of Shenzhou z7-kp7gz notebook splash screen
Measure the relevant VCC above to get the following data:
Maintenance drawing 2 of Shenzhou z7-kp7gz notebook splash screen
There are some signals that I can’t understand, such as this a_Cover LED_BL。So I went to the forum to search.Hey, we got a link ,The signal is normal, it seems to be 0V.But this one is 5V, so according to his practice, we removed q27 from Figure 1.
After removal, power on test,Normally booting up, troubleshooting, and maintenance are finished.