LL-T2020 (serv.man8). Waveform - Sharp Monitor Service Manual (repair manual)

ll-t2020 (serv.man8) service manual
Model
LL-T2020 (serv.man8)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
76.25 KB
Type
PDF
Document
Service Manual
Brand
Device
Monitor / Waveform
File
ll-t2020-sm8.pdf
Date

Read Sharp LL-T2020 (serv.man8) Service Manual online

LL-T2020
WAVE FORM
5 – 1
CHAPTER 5. WAVE FORM
Waveform measurement condition: Input each of the display patterns
and measure the waveform (tinming chart).
CAUTION
WAVE FORM 1: REFCK (LD565)
Frequency: 81MHz
Display screen: Arbitrary
2V/DIV, 10ns/DIV
WAVE FORM 2:  XTAL (IC601 of 2PIN)
Frequency: 24MHz
Display screen: Arbitrary
1V/DIV, 25ns/DIV
WAVE FORM 3: VSYNC (LD305, LD318)
Frequency: 60Hz
Display screen: Arbitrary
1V/DIV, 5ms/DIV
WAVE FORM 4:  HSYNC (LD304, LD317)
Frequency: 75kHz
Display screen: Arbitrary
1V/DIV, 5
µµµµ
s/DIV
Wave-form
No.
Measurement 
point
Name of 
waveform
Display pattern
1
LD565
REFCK
Arbitrary
2
IC601 of 2PIN
XTAL
Arbitrary
3
LD305, LD318
VSYNC
Arbitrary
4
LD304, LD317
HSYNC
Arbitrary
5
LD502
ICK
Arbitrary
6
LD504
VS
Arbitrary
7
LF505
IHS
Arbitrary
8
IC701 of 10PIN DCLK
Arbitrary
9
IC701 of 9PIN
DEN
Arbitrary
10
LD300, LD301, 
LD302
RGB OUT
16 monochromatic 
gradation patterns
Oscilloscope: Tektronix644B
Input signal:
VESA1600 x 1200
H: 75kHz  V: 60Hz
DOTCLK: 162MHz
GND
GND
GND
GND
LL-T2020
WAVE FORM
5 – 2
WAVE FORM 5: ICK (LD502)
Frequency: 81MHz
Display screen: Arbitrary
1V/DIV, 5ns/DIV
WAVE FORM 6:  VS (LD504)
Frequency: 60Hz
Display screen: Arbitrary
1V/DIV, 5ms/DIV
WAVE FORM 7:  IHS (LD505)
Frequency: 75kHz
Display screen: Arbitrary
1V/DIV, 5
µµµµ
s/DIV
WAVE FORM 8:  DCLK (IC701 of 10PIN)
Frequency: 81MHz
Display screen: Arbitrary
1V/DIV, 5ns/DIV
WAVE FORM 9:  DEN (IC701 of 9PIN) 
Frequency: 75kHz
Display screen: Arbitrary
1V/DIV, 5
µµµµ
s/DIV
WAVE FORM 10: RGB OUT ( LD300, LD301, LD302)
Display screen: 16 monochromatic gradation patterns
0.5V/DIV, 5
µµµµ
s/DIV
GND
GND
GND
GND
GND
GND
Page of 2
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Here you can read online and download Sharp LL-T2020 (serv.man8) Service Manual in PDF. LL-T2020 (serv.man8) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp LL-T2020 (serv.man8) Monitor. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.