NEC Multi Sync EA221WMB Manuals

Manuals and User Guides for NEC Multi Sync EA221WMB. We have 1 NEC Multi Sync EA221WMB manual available for free PDF download: Service Manual

NEC Multi Sync EA221WMB Service Manual

NEC Multi Sync EA221WMB Service Manual (58 pages)

Brand: NEC | Category: Monitor | Size: 7.66 MB

Table of Contents

Service Manual
1
Very Important
2
Safety Guideline in Servicing
3
Other Cautions Necessary
3
Caution for LEAD-FREE Soldering Work
4
Solder Iron Tip Temperature and Contact Time
4
Procedure of Monitor Repair
5
Repair and Return
6
Swap
6
Table of Contents
7
Serial Number Label
8
Serial Number Information
8
No Power
10
Trouble Shooting
10
- No Video (LED Indicator Orange)
  11
- No Display (LED Indicator Green)
  12
- Image Overlap, Focus or Flicker, Color Defect
  14
- Brightness Defect
  15
- Color Defect (Missing Color(R, G, B))
  16
- White Balance Defect
  16
- Line Defect
  17
- Block Defect
  17
- Dot Defect (Bright Dot / Dark Dot)
  18
- Audible Defect
  19
- No Sound or Noise Etc.
  19
- USB Doesn't Function
  20
- Remove the Stand
  21
Disassembly
21
- Remove the Rear Cover and Bezel
  22
- Remove the Shield
  24
- Panel
  26
- Adjustment
  32
- Measuring Instruments, Jigs, and Tools
  32
- Power Supply Voltage
  32
- Power Circuit Closure
  32
- For LG Panel (LM220WE1-TLP1 GZ LGD)
  33
- Reference Signal Timing
  33
- For SEC Panel (LTM220M1-L01 LLB SZ SEC)
  33
- Basic Operation
  33
- Special Key Operation
  34
- Factory Mode
  34
- Enter Aging Mode
  34
- Factory Mode Explanations
  35
- Hours Running
  35
- Show Running Time
  35
- Factory Preset
  35
- Bright MIN
  36
- Bright MAX
  36
- Auto Adjust Count
  36
- Auto Contrast Count
  36
- Url
  37
- Expansion
  37
- Burn in Mode
  37
- Cs Sample Comp
  38
- Cs Sample Sog
  38
- Register Address
  38
- Register Value
  38
- Check for the Received Recommended Frequency
  39
- Check for OSD Control Switch
  39
- Electric Performance Inspection
  39
- Inspection
  39
- External Inspection on the LCD Module
  40
- For LG Panel
  40
- Conditions
  40
- Defect Modes
  40
- Polarizer Defects
  41
- Foreign Material
  41
- Bezel Appearance
  41
- Visual Inspection
  43
- Electrical Inspection
  43
- Criteria for Bright Dot Defect
  44
- Judge the Bright Dot
  44
- Bright Dot Definition
  44
- Bright Dot Defect Definition
  44
- Dark Dot Defect Description
  45
- Two Adjacent
  45
- Minimum Distance between Dot Defects
  45
- Bright Dot - to - Bright Dot
  45
- For LGD Panel
  46
- Ambient Conditions
  46
- Viewing Distance
  46
Writing of EDID/OSD (Monitor Information) Data
48
- EDID Data Inspection and Writing to the D-SUB Connector
  49
- Operation
  49
- Program
  49
- Input Signal
  49
- EDID Data Inspection and Writing to the DVI
  50
- EDID Data File
  52
- EDID DATA for NEC EA221WM Analog
  52
- EDID DATA for NEC EA221WM Digital
  52
- OSD "MONITOR INFORMATION" for Serial Number
  53
- System Connection
  53
- Operation Steps
  53
Shipment Setting
55
Packing Specification
56
Revision History
57

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