ViewSonic N4251w-1M Service Manual page 28

SPEAKER output is right. Meets earphone with the EARPHONE, Determined whether
the action of EARPHONE output is normal.
1.4.11 All Modes Reset
After final QC step, we must to erase all saved changes again and restore the factory
defaults.
You should do "All Mode Reset" again.
Turn off the LCD TV by pressing "Power" button.
TV Frequency Table:
U.S.A Channel (TABLE 1)
VIF 45.75 MHz, SIF 41.25 MHz
Ch. Freq.range fp (picture) fs (sound)
2 54 – 60
3 60 – 66
66 – 72
4
5 76 – 82
6 82 – 88
7 174 – 180
8 180 – 186
186 – 192
9
10 192 – 198
11 198 – 204
12 204 – 210
13 210 – 216
470 – 476
14
15 476 – 482
16 482 – 488
488 – 494
17
18 494 – 500
500 – 506
19
20 506 – 512
21 512 – 518
518 – 524
22
23 524 – 530
530– 536
24
25 536 – 542
26 542 – 548
548 – 554
27
28 554 – 560
29 560 – 566
30 566 – 572
31 572 – 578
578 – 584
32
33 584 – 590
34 590 – 596
35 596 – 602
36 602 – 608
608 – 614
37
38 614 – 620
39 620 – 626
40 626 – 632
41 632 – 638
639 – 644
42
ViewSonic Corporation
fosc
55.25 59.75 101.00
61.25 65.75
107.00
67.25 71.75
113.00
77.25 81.75 123.00
83.25 87.75
129.00
175.25 179.75 221.00
185.75
181.25 227.00
187.25 191.75
233.00
197.75
193.25 239.00
199.25 203.75
245.00
205.25 209.75 251.00
215.75
211.25 257.00
471.25 475.75
517.00
481.75
477.25 523.00
483.25 487.75
529.00
489.25 493.75 535.00
499.75
495.25 541.00
501.25 505.75
547.00
507.25 511.75 553.00
513.25 517.75
559.00
519.25 565.00
523.75
525.25 529.75 571.00
531.25
535.75 577.00
537.25 583.00
541.75
543.25 547.75 589.00
549.25 595.00
553.75
555.25 559.75 601.00
561.25
565.75 607.00
567.25 613.00
571.75
573.25 577.75 619.00
579.25
583.75 625.00
585.25 589.75 631.00
591.25
595.75 637.00
597.25 643.00
601.75
603.25
607.75 649.00
609.25
613.75 655.00
615.25 619.75 661.00
621.25
625.75 667.00
627.25 673.00
631.75
633.25 637.75 679.00
639.25
643.75 685.00
Ch. Freq.range fp (picture) fs (sound)
43 644 – 650 645.25
650 – 656 651.25
44
45 656 – 662 657.25
46 662 – 668 663.25
47 668 – 674 669.25
48 674 – 680 675.25
681.25
49 680 – 686
50 686 – 692 687.25
51 692 – 698 693.25
698 – 704 699.25
52
53 704 – 710 705.25
711.25
54 710 – 716
55 716 – 722 717.25
56 722 – 728 723.25
728 – 734 729.25
57
58 734 – 740 735.25
741.25
59 740 – 746
60 746 – 752 747.25
61 752 – 758 753.25
758 – 764 759.25
62
63 764 – 770 765.25
771.25
64 770 – 776
65 776 – 782 777.25
66 782 – 788
783.25
788 – 794
67 789.25
68 794 – 800
795.25
69 800 – 806 801.25
25
Confidential - Do Not Copy
(Unit：MHz)
fosc
649.75 691.00
655.75 697.00
703.00
661.75
667.75 709.00
673.75 715.00
679.75 721.00
685.75 727.00
733.00
691.75
697.75 739.00
703.75 745.00
709.75 751.00
715.75 757.00
721.75 763.00
727.75 769.00
733.75 775.00
781.00
739.75
745.75 787.00
751.75 793.00
757.75 799.00
763.75 805.00
811.00
769.75
775.75 817.00
781.75 823.00
787.75 829.00
793.75 835.00
841.00
799.75
805.75 847.00
N4251w-1M