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MultiSync LCD1550ME
NEC MultiSync LCD1550ME Manuals
Manuals and User Guides for NEC MultiSync LCD1550ME. We have
1
NEC MultiSync LCD1550ME manual available for free PDF download: Service Manual
NEC MultiSync LCD1550ME Service Manual (131 pages)
Brand:
NEC
| Category:
Monitor
| Size: 2.87 MB
Table of Contents
Table of Contents
3
Service Manual
1
User's Manual
4
Canadian Department of Communications Compliance Statement
7
Fcc Information
7
Declaration of Conformity
8
Quick Start
10
Figure D
12
Figure E
12
Figure F
12
Figure R
13
Figure R
14
English
16
Auto Adjust
17
English
19
Recommended Use
20
English
21
Specifications
23
Features
25
No Sound
29
Serial Number Information
36
Disassembly
37
Adjustment Procedures
45
1 Application
46
Aging
46
Basic Function
46
2 Basic Operation
46
General Conditions
46
Key Layout
46
Service Mode
47
Electrification
48
Input Signals
48
Measuring Instruments to be Used
48
POWER on and Signal Input
48
Power Source Voltage
48
3 Set Adjustments
48
Input Video Signal
49
Manual Adjustments
49
VIDEO Gain Adjustments
50
Factory Setting
51
Inspection
52
Table of Contens
52
1 Set Inspection
53
Application
53
Brightness Setting
53
Configuration of Inspection Jigs
53
Equipment to be Used
53
Inspection Cables/Connections
53
Inspection Conditions
53
Inspection Mode
53
OSM Functions
53
Power Source Voltage
53
Inspection Mode Setting
54
Basic Operational Procedures
63
OSM Control Operation
63
Switch Functions
63
Inspection
64
Inspection on LCD Brightness and Contrast
64
Power on
64
Inspection on Automatic Adjustment Function
65
Inspection on Input Signal Identification
66
Inspection on Audio Function
67
Input Current Measurements
68
Safety Test
68
Setting before Shipment
68
Dielectric Strength Test
69
Power Source/Earth Connections
69
Insulation Resistance Test
70
Leakage Current Test
70
External Inspection of the Display Surface
71
2 External Inspection on the LCD Module
71
Inspection Items
71
Inspection Standards
71
A Construction of System
73
Input Signal
73
3 Inspection of PLUG & PLAY Communication and OSM "MONITOR INFORMATION" for Model Name/ Serial Number
73
Operational Procedures
74
EDID Data File
75
Trouble Shooting
76
No Display of Screen(Screen Is Black ,Color of LED Is Amber)
77
Nothing Displays on Screen(Screen Is Black ,Color of LED Is Green)
78
Checking the Back Light Unit
81
Abnormal Screen
82
No OSM Display
84
Abnormal Plug and Play Operation
85
Checking the Control Circuit of Horizontal Sync Pulse
86
Checking the Control Circuit of Vertical Sync Pulse
86
Checking the Interface Circuit of Sync Signal
86
Checking the Resolution Change IC Movement
87
No Power
88
No Power on
88
Checking the DC/DC Converter Circuit
90
Checking the Operation of CPU
91
Checking the Audio Circuit
92
Check the Inverter Board Circuit
93
Circuit Description
95
Audio Circuit
96
Audio Input
96
Audio Output
96
Power Supply
96
Definition Converter LSI Peripheral Circuit
97
On-Screen Circuit
97
Video Input Circuit
97
CPU Circuit
98
Detection of POWER Switch Status
98
Display Mode Identification
98
LED Control Circuit
98
E 2 PROM for Pnp
98
E 2 Prom
98
System Reset
98
System Reset, LED Control Circuit
98
Control of Definition Converter MCU I306
100
I 2 C Bus Control
101
User Control
100
Power on Sequence
101
Power off Sequence
102
Circuit Diagram
103
Inverter
103
Inverter Basic Function
103
Replacement Parts List
106
Block Diagram
124
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