Sharp LL-T1810A, Руководство по обслуживанию

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CHAPTER 4. WAVE FORM
1. WAVE FORM DESCRIPTION
Waveform measurement condition: Input each of the display patterns
and measure the waveform (timing chart).
Wave-form
No.
Measurement point Name of waveform Display pattern
1 22 pin of the IC34 XIN Arbitrary
2 9 pin, 18 pin of the IC14 VSYNC Arbitrary
3 8 pin, 17 pin of the IC14 HSYNC Arbitrary
4 6 pin of the IC34 MPU VSY Arbitrary
5 7 pin of the IC34 MPU HSY Arbitrary
6 FL4, FL3 LCD CLKA, CLKB Arbitrary
7 FL2, FL5 LCD DEA, DEB Arbitrary
8 24 pin of the IC24 DSYNC Arbitrary
9 8 pin of the IC23 ADCLKOUT Arbitray
10 25 pin of the IC14 SOGOUT 16 monochromatic gradation patterns
11 27 pin, 30 pin, and 35 pin of the IC14 VSwitch RGB OUT 16 monochromatic gradation patterns
12 16 pin of the IC401, IC402 and IC403 VAmp RGB OUT 16 monochromatic gradation patterns
13 52 ~ 59 pins and 62 ~ 69 pins of (R) of the IC23
32 ~ 39 pins and 42 ~ 49 pins of the (G) of the IC23
12 ~ 19 pins and 22 ~ 29 pins of (B) of the IC23 A/D OUT DATA Monochrome pattern at every 2 lines
14 242 ~ 259 pins, 262 ~ 268 pins, 276 ~ 278 pins,
281 ~ 292 pins, and 295 ~ 302 pins of the IC27 ASIC IN DATA Monochrome pattern at every 2 lines
15 156 ~ 163 pins, 166 ~ 174 pins, 177 ~ 183 pins, 191 ~ 204 pins, and
207 ~ 216 pins of the IC27 ASIC OUT DATA Monochrome pattern at every 2 lines
16 1, 3, 4, 6, 7, 9, 10, 12, 13, 17, 18, 20, 21, 60, 61, 63, 64, 68, 69, 71, 72,
74, 75, 77, 78, 80, 81, 83, 84, 97, 98 and 100 pins of the IC8, IC9, and
IC10 SGRAM IN/OUT
DATA Monochrome pattern at every 2 lines
17 13, 15, and 17 pins of the IC31 OSD COLOR DATA Black pattern on entire screen OSD
menu display
CAUTION
(1) Use the probe TektronixP6139A
(2) Reception mode : VESA 1024 x 768
H:60.024 kHz V:75.075 Hz
DOTCLK:78.750MHz
Oscilloscope : Tektronix TDS744A
Input signal : VESA1024 x 768
H: 60.02 kHz V: 75.075 Hz
DOTCLK: 78.750MHz