1
TABLE OF CONTENTS
PAGE
1.
SPECIFICATIONS ….............................................................................…………...………….
2
1-1 GENERAL SPECIFICATIONS ..
…................................................…………....…………………….
2
1-2 LCD TV DESCRIPTION ...
..................................................…………...……………………………..
3
1-3 INTERFACE CONNECTOR ........................................
..............………….....………………………
3
2.
PRECAUTION AND NOTICES .................................................……………..……….…………
3
2-
1 ASSEMBLY PRECAUTION ..........................................................…………..………………………
3
2-2 OPERATIONG PRE
CAUTION .....................................................…………..………………………
3
2-
3 STORAGE PRECAUTION …........................................................…………..………………………
3
2-4 HIGH VOLTAGE WARNING ................................................
.......…………...………………………
3
3. D-SUB PIN DISTRIBUTION...
......................................................................…………….…….
4
FACTORY PRESET DISPLAY MODES……………………………………..….………………………
5
4. ADJUSTMENT.................................
........................................……………...………………….
5
4-
1 ADJUSTMENT FUNCTION.............................................................…………..…………………….
5
4-
2 ADJUSTMENTS METHOD .............................................................…………..…………………….
12
4-
3 FRONT PANEL CONTROL KNOBS ................................................…………..……………………
12
5. TROUBLE SHOOTING CHART................................................................…………...…………
13
5-1 PANEL CONTROL CIRCUIT TROUB
LE SHOOTING………………………………………………..
13
5-
2 MAIN BOARD POWER VCC TROUBLE SHOOTING………………………………………………..
14
5-
3 REMOTE CONTROL BLOCK TROUBLE SHOOTING.………………………………………………
14
5-
4 KEY BOARD CONTROL BLOCK TROUBLE SHOOTING…………………………………………..
15
5-5 PC CONTROL
BLOCK TROUBLE SHOOTING……………………………………………………….
15
5-
6 AUDIO CONTROL BLOCK TROUBLE SHOOTING...............................…………………………...
17
5-7
VIDEO CONTROL ……………………………………………………………………………………….
18
6. WHITE-
BALANCE, LUMINANCE ADJUSTMENT……………………………………….…………
19
7. SOFTWARE FLOW CHART……………………………………………………………….………….
21
8. BLOCK DIAGRAM
........................................................…………………………………………..
24
8-1 MAIN BOARD BLOCK DIAGRAM .
………………………………………………………………….
24
8-2 POWER
BOARD BLOCK DIAGRAM……………………………………………..…………………...
25
9
. SCHEMATIC DIAGRAM ….......................................................................……………………...
26
9-
1 MAIN BOARD SCHEMATIC DIAGRAM……………………………………………………………….
26
9-2 POWER
BOARD SCHEMATIC DIAGRAM……………………………………………………………
39
9-
3 KEY BOARD SCHEMATIC DIAGRAM………………………………………………………………...
43
9-4 HEADPHONE JACK
BOARD SCHEMATIC DIAGRAM……………………………………………..
44
9-
5 IR BOARD SCHEMATIC DIAGRAM…………………………………………………………………...
45
10. MECHANICAL OF CABINET FRONT DIS-
ASSEMBLY………………………………………….
46
11
. BOM LIST………………………………………………………………………………………………
47
12. PCB LAYOUT
…………………………………………………………………………………………
78
12-1 MAIN BOARD PCB LAYOUT
.…..............……………………………………………………………
78
12-2 PWPC BOARD PCB LAYOUT
..............…………………………………………………………
79
12-4 HEADPHONE BOARD PCB LAYOUT
..............……………………………………………………
80
12-5 IR BOARD AND IR BOARD PCB LAYOUT
..............…..……………………………………………
80
12-6 KEY BOARD PCB LAYOUT
…………………………………………………………………………
80
Summary of Contents for PB20C
Page 15: ...14 5 2 Main Board Power Circuit 5 3 Remote Control Block ...
Page 16: ...15 5 4 Key Board Control Block 5 5 PC Control Block ...
Page 17: ...16 ...
Page 18: ...17 5 6 Audio Control Block ...
Page 22: ...21 7 SOFTWARE FLOW CHART ...
Page 23: ...22 ...
Page 24: ...23 ...
Page 26: ...25 8 2 POWER BOARD BLOCK DIAGRAM ...
Page 44: ...43 9 3 KEY BOARD SCHEMATIC DIAGRAM ...
Page 45: ...44 9 4 HEADPHONE JACK BOARD SCHEMATIC DIAGRAM ...
Page 46: ...45 9 5 IR BOARD SCHEMATIC DIAGRAM ...
Page 47: ...46 10 MECHANICAL OF CABINET FRONT DIS ASSEMBLY ...
Page 79: ...78 12 PCB LAYOUT 12 1 MAIN BOARD PCB LAYOUT ...
Page 80: ...79 12 2 PWPC BOARD PCB LAYOUT ...