Daewoo DDC500 - Page 7

Noise 1>. Check if lens is normal. Change
another lens;
2>. Check if power wire of camera is OK.
TFT-LCD is too dark 1>. Check if the power, resistance and
audion of LCD back light circuit are OK;
2>. Check if LCD is OK.
TFT-LCD displays
white image
1>. Check if LCD interface is inserted to
the end or the interface is cold soldering;.
2>. Check if each group of power +5VL,
+15VL, D3.3V, -7.5VL of LCD are
normal;
3>. Check if the contact between I/O
board & MCU connecting U model board
and interface is OK.
TFT-LCD displays
menu without image
1>. Check if lens shutter and aperture are
opened;
2>. Check if CCD flex board installation
is OK and flex board is broken;
3>. Check if CCD and related
components are OK;
4>. Check if each voltage of CCD is OK.
TFT-LCD color
deviation/aberration
1>. Check if CCD flex board installation
and flex board are OK;
2>. Check if CCD is short-circuit, cold
soldering or insufficient soldering;
3>. Check if U5 is cold soldering,
insufficient soldering or NG.
TV displays nothing 1>. Check the TV interface is OK;
2>. Check if camera base J4 soldering is
OK;
3>. Check if J602 on I/O board is OK, U
model flex board is OK and contact is
OK.
Display and
image system
TV playback without
sound/ noise/ voice too
low/ too high
1>. Check if base TV interface is OK;
2>. Check if microphone wire soldering is
OK;
3>. Check if J602 on I/O board is OK, U
model flex board is OK and contact is
OK.
Charging
triggering
system
Charging fail/ fail to
charge fully
1>. Check the U805 and surrounding
components and voltage are normal;
2>. Check if Q808/ D807/ D808/ T801/
R847 and big capacitor are normal;
3>. Check if R480/ R841/ R842/ R843/
R844 are normal;
4>. Check if big capacitor is OK or leaks
liquid.