Acer CE-6430, Руководство по обслуживанию

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15 Chapter 4
Item NG point NG Analyzing solution
Aperture not
moving 1. Check if the lens unit, power U802 +5.0V and +3.3V
are ok;
2. Check F/W version and update F/W again;
3. Confirm the output control signal of MCU board is
normal
4. Check if the output signal ISM1 and ISM2 of U601
are normal.
Power
system Power on failure 1. Check if VP&+3.3VS power are normal, and
PDETECT signal is in the specification (>1.24V);
2. Test if there are PWRON input and PWR_CTRL
signal output;
3. Confirm if each power voltage of the camera is
normal;
4. Confirm if there is big electric current in the process
of power on;
5. Update F/W again;
6. Confirm if lens is ok, and the DSP signal of lens part’s
feedback;
7. Confirm if U701 (NAND FLASH), U201 (DDR) and
its periphery circuit is ok;
8. Download the power-on F/W;
9. Check if the crystals Y1 and Y2 on MCU/B are ok.
Display
and
Image
system Fail to capture:
1. LCD displays
“Memory Full”
2. No reaction
while press
capture button
3. Fail to store
images
1>. The camera memory and SD card are full;
2>. Check the F/W version and update F/W again.
1>. Check if SW1 and SW3 are ok;
2>. Check F/W version and update F/W again.
1>. Confirm if the SD card used is ok;
2>. Check if MCU/B U701 (NAND FLASH) is ok;
3>. Check the F/W version, update F/W again;
4>. Check if SD card is cold soldered.