Asus P750 Service Manual download pdf (Page 16)

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GTC ■ Service Manual

ASUS Proprietary 16

6.2.5 Test

e can check the below signal list to verify the Micro SD function.

. MMC_PWR_EN 2.9V ->If not U600 NG.

. MMC_3.0V 2.9V->If not check U87 soldering issue.

circle ”Red->Green->B er the LED twinkled

A. RGB LED Abnormal

LED signal is controlled by CPLD. The behavior code is

n PCB.

00.

Micro SD

Figure 4. micro SD Power

Ps. The position of the Micro SD Socket had the mechanical position

declination. So the SD card still exist detect but it will cause lodged for

SD insert at assembly test.。

6.2.6 LED Test

The test item is for Red, blue, green Led die and key pad LED could

works. The scenario will step by step to follow the

lue” on indicated LED. Aft

1 Hz then keypad white LED also twinkle the key panel.

The RGB

no exist in CPLD which will cause the RGB LED always

illuminated red light. Please replace the CPLD o

If one of the colors can’t works on RGB LED, please check the

soldering issue on R621, R622, R623 or replace the LED6

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Asus P750 Service Manual Page 16