Daewoo DSC-34W70N Manuel de service télécharger pdf (Page 17)

8. Troubleshooting charts

- 16 -

No Picture

(NTSC Signal)

OSD is on the screen.

Check OSD signal of I701.

R/G/B OSD : #64, 63, and 62

BL OSD : #61

Check OSD signal of UC107.

R/G/B OSD : #50, 51, and 52

BL OSD : #49

Check video signal of IA1.

Video1 :CVBS to #43, Y to #45,

and C to #47

Video2 :CVBS to #1

Video3 :CVBS to #7, Y to #9,

and C to #11

Check each

input signal.

When CVBS input, CVBS is to #34 of IA1.

When Y/C input, Y/C is to #37 and #39 of IA1.

When CVBS input, CVBS is to #88 of UC100.

Y/C signal of 3D comb filter is to #84 and #83 of UC100.

When Y/C input, Y/C is to #88 and #96 of UC100.

Y/C signal is to #73 and #71 of IC UC104.

Check below signal of UC104

-Y and C signal : #73, #71

-Picture Bus Y(MY0~MY7)

-Picture Bus C (MC0~MC7)

-V sync pulse (VSM) : #57

-Active video output (AVO) : #54

-Clock out (LLC2) : #27

Check below signal of UC106

-Picture Bus Y(MY0~MY7)

-Picture Bus C (MC0~MC7)

-V sync pulse (VSM) : #26

-Active video output (AVO) : #27

-Clock out (LLC2) : #18

-Y /Cb /Cr out: #87, 84, and 90

-H/V sync : #4, 5

Check below signal of UC107

R/G/B out : #35, 37, and 39

Check TV video signal of IA1.

CVBS of main tuner (TU01) : #41

CVBS of sub tuner (TU02) : #27

Check DVD signal to UC104.

Y/Cb/Cr : #5, 4, and 3

Check Tuner

(TU01 & TU02).

No Picture

(DVD Signal)

Check below signal of UC107

Y/Cb/Cr in : #69, 68 and 67

H/V sync : #66, 65

No Picture

(DTV Signal)

Check DTV signal of UC107

Y/Pb/Pr in : #5, 4 and 3

OSD

END

AV Signal RF Signal

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Daewoo DSC-34W70N Manuel de service Page 17

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