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MultiSync 20WGX2-BK
User Manuals: NEC MultiSync 20WGX2-BK LCD Monitor
Manuals and User Guides for NEC MultiSync 20WGX2-BK LCD Monitor. We have
1
NEC MultiSync 20WGX2-BK LCD Monitor manual available for free PDF download: Service Manual
NEC MultiSync 20WGX2-BK Service Manual (143 pages)
COLOR MONITOR
Brand:
NEC
| Category:
Monitor
| Size: 11 MB
Table of Contents
Adjustment Procedures
38
Table of Contents
38
Application
39
Default Setting
39
Basic Operation
40
Basic Key Function
40
How to Use Factory Mode
42
Adjustment
46
Measuring Instruments, Jigs and Tools
46
Power-Supply Voltage
46
Power Circuit Closure
46
ADC Bias and Gain Adjust
46
Panel Brightness Check
47
Panel Color Check
47
Color Temperature Check
47
Reference Signal Timing
48
Inspection
49
General Description
51
Electrical Characteristics
52
Input Signals
52
Power Supply
54
Power Management
55
Others
56
Touch Panel Capability
57
White Color Temperature
57
Criteria for Noise
58
Visual Ergonomic Requirement of TCO'03 Standard
58
Analog Video Input: Mini D-SUB 15 Pin
59
Connector Pin Assignment
59
Digital Inter Face Signals
60
Support Video Modes
61
DDC Function
63
Full Scan Capacity
63
Other Function
63
Plug & Play
63
Remote Control
63
85Hz Refresh Rate Support
64
External Inspection on the LCD Module
65
Inspection Condition
65
Polarizer Defects
66
Bezel Appearance
67
Foreign Material
67
Line Defect
67
Others
67
Dielectric Strength Test
68
Insulation Resistance Test
68
Safety
68
CTI Value of PCB
69
Ground Continuity
69
Leakage Current Test
69
Others
69
System Connection
70
Input Signal
71
Program
71
Operation
72
EDID Data File
77
EDID Write Protect Cancel Signal Timing
77
Appendix Reference Signal Timings
78
Trouble Shooting
92
No Display on Screen (Screen Is Black, Color of LED Is Amber)
93
Nothing Display on Screen (Screen Is Black, Color of LED Is Blue)
94
Checking the Back Light Unit
96
Abnormal Screen
97
Abnormal OSM Display
98
OSD Adjust Problem
98
Abnormal DDC2 (D-Sub)
99
Abnormal DDC2 (DVI)
99
Abnormal Plug and Play Operation
99
Checking the Control Circuit of Horizontal Sync Pulse
100
Checking the Control Circuit of Vertical Sync Pulse
100
Checking the Interface Circuit of Sync Signal
100
Checking the Resolution Change IC Movement
101
Checking the DC/DC Converter Circuit
102
No Power on
103
Check the USB Hub Circuit
104
HUB Is Not Recongnize
104
Connection Apparatus Is Not Recognize
105
Connection Apparatus Does Not Work
106
Check the USB IC
107
Circuit Description
108
E 2 Prom
109
E 2 PROM for EDID
109
Interface Board and Panel Power Supply
109
System Reset, LED Control Circuit
109
Video Input Circuit
109
MCU Circuit
110
Power Supply (Circuit Daigrams MAIN PWB)
113
USB 2.0 Hub Circuit
115
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