English
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1. Checking for no Picture
A screen doesn
’
t display at all and condition of black pattern or power off.
(1) Check whether the CTRL B/D LED(D2) is turned on or not.
(2) Check the power and signal cable of CTRL B/D.
(3) Check the power connection of X B/D, Y B/D and Z B/D.
(4) Check the connection of X B/D, Y B/D and Z B/D to CTRL B/D.
(5) After measure the output wave of X, Y and Z B/D, find the trouble of B/D by comparing with below figure and replace.
- Measure Point fo Y B/D : TP (Bead B41)
- Measure Point fo Z B/D : TP ((Bead B11)
- Measure Point fo X B/D : COF TP
(6) Check the SCAN IC.
(7) Check the DATA COF.
(8) Replace the CTRL B/D.
<Y B/D Output wave - 1FRAME>
<COF Output wave - 1FRAME>
<COF Output wave - 1SF>
<Z B/D Output wave - 1FRAME>
<COF Output wave - Enlargement>
Содержание PDP-5016
Страница 16: ......
Страница 17: ...DbhM4812V12_Vtek_BOM sch 2 Wed Oct 06 23 58 08 2004 ...
Страница 18: ...DbhM4812V12_Vtek_BOM sch 3 Wed Oct 06 23 58 10 2004 ...
Страница 19: ...DbhM4812V12_Vtek_BOM sch 4 Wed Oct 06 23 58 11 2004 ...
Страница 20: ...DbhM4812V12_Vtek_BOM sch 5 Wed Oct 06 23 58 15 2004 ...
Страница 21: ...DbhM4812V12_Vtek_BOM sch 6 Wed Oct 06 23 58 16 2004 ...
Страница 22: ...DbhM4812V12_Vtek_BOM sch 7 Wed Oct 06 23 58 18 2004 ...
Страница 23: ...DbhM4812V12_Vtek_BOM sch 8 Wed Oct 06 23 58 29 2004 ...
Страница 24: ...DbhM4812V12_Vtek_BOM sch 9 Wed Oct 06 23 58 20 2004 ...
Страница 25: ...DbhM4812V12_Vtek_BOM sch 10 Wed Oct 06 23 58 22 2004 ...
Страница 26: ...DbhM4812V12_Vtek_BOM sch 11 Wed Oct 06 23 58 32 2004 ...
Страница 27: ...DbhM4812V12_Vtek_BOM sch 12 Wed Oct 06 23 58 25 2004 ...
Страница 28: ...DbhM4812V12_Vtek_BOM sch 13 Wed Oct 06 23 58 27 2004 ...
Страница 29: ...Dbh1S4909V12 sch 2 Thu Oct 07 00 30 42 2004 ...
Страница 30: ...Dbh1S4909V12 sch 3 Thu Oct 07 00 30 43 2004 ...
Страница 31: ...Dbh1S4909V12 sch 4 Thu Oct 07 00 30 45 2004 ...
Страница 32: ...Dbh1S4909V12 sch 5 Thu Oct 07 00 30 47 2004 ...
Страница 33: ...Dbh1S4909V12 sch 6 Thu Oct 07 00 30 49 2004 ...
Страница 34: ...Dbh1S4909V12 sch 7 Thu Oct 07 00 30 50 2004 ...
Страница 35: ...Dbh2S4909V12 sch 2 Thu Oct 07 00 32 34 2004 ...
Страница 36: ...DUBHE OSD Ver1 1_NAKS sch 1 Mon Oct 18 11 47 11 2004 ...
Страница 37: ...0025 sch 1 Mon May 16 09 25 50 2005 ...
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Страница 68: ......