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Acer AL716 AL716 Monitor Service Guide - Page 36

Performance Troubleshooting

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6.1.2 Performance Troubleshooting 36

Section	Page
AM777/778/677/678 TFT LCD MONITOR CONTENTS	1
INTRODUCTION	3
Scope	3
Description	3
ELECTRICAL REQUIREMENTS	4
Standard Test Conditions	4
All tests shall be performed under the following conditions, unless otherwise specified.	4
MEASUREMENT SYSTEMS	4
LCD monitor General specification	4
LCD Panel Specification	5
LCD Panel Model (Hydis LT17E12-200)	5
LCD Panel Model(AU M170EN05)	6
Input Signals	12
Video input	12
Sync input	12
Interface frequency	12
Supported Timing	13
85Hz refresh rate Support	14
Video input Connector	14
CONTROLS	16
Control panel (monitor front panel)	16
OSD Functions	16
White Color Temperature	18
POWER SUPPLY	19
input Voltage Range	19
Input Frequency Range	19
Input power frequency range shall be from 47.5 to 63 Hz over the specified input voltage range.	19
Quick specification review	19
Power Management	19
Meet VESA DPMS proposal	19
Power Consumption	19
Plug & Play(EDID)	20
Audio Technical specification (AM777/677 Only)	20
General Description:	20
Electrical characteristics (Tamb=25()	20
Speakers	20
Headphone output	20
VL-713 DISPLAY CONTROL BOARD	21
Description	21
Features	21
BLOCK DIAGRAM	22
System Block Diagram	22
Connector Locations	22
Connector Type	23
Connector pin assignment	23
CN1	23
CN5	24
CN302	24
CN301	25
CN6	25
CN4	25
VK-713 Control Panel Board	26
Description	26
Connector and Switch Locations	26
Connector type	26
Connector pin Assignment	26
J4	26
J2	26
J3	27
J1	27
Switch definition	27
LED definition	27
POWER SUPPLY & INVERTER BOARD	28
Description	28
Power supply ( AC to DC section)	28
input Voltage Range	28
Input Frequency Range	28
Input power frequency range shall be from 47.5 to 63 Hz over the specified input voltage range.	28
Quick specification review	28
Inverter (DC to AC Section)	29
Electrical characteristics	29
FOR AU PANEL M170EN05	29
Connector locations	30
Connector type	30
Connector pin assignment	30
J970, J971	30
J803 For Display control board (Interface)	30
P62 For AM777/AM677	31
FOR HYDIS PANEL HT17E`12-200	31
Connector locations	32
Connector type	32
Connector pin assignment	32
J920,J941,J980,J981	32
J803 For Display control board (Interface)	32
P62 For AM777/AM677	33
TROUBLESHOOTING	34
Main Procedure	34
	34
Power Circuit and Backlights Troubleshooting	35
	35
Performance Troubleshooting	36
Function Troubleshooting	37
Power Line Transient Test (IEC 61000-4-4 Fast Transients/Burst)	38
Peak Voltage:	38
Polarity : + / -	38
Repetition Frequency of the impulse : 5 KHz.	38
Rise-Time : 5ns ( 30%	38
Impulse Duration: 50 nS ( 30%	38
Relation to Power Supply: Asynchronous	38
Burst Duration: 15 ms ( 20%	38
Burst Period: 300 ms ( 20%	38
Climatic Conditions:	38
Test Procedure:	38
Power Line Surge Test (IEC 61000-4-5 Surge)	40
Climatic Condition	40
Ambient Temperature: 15(C to 35(C	40
Relative Humidity: 10% to 75%	40
Atmospheric Pressure 86kPa(860 mbar)to 106kPa (1060mbar)	40
Test Conditions:	40
Wave-shape of the current surge: (refer to IEC 61000-4-5)	40
Polarity:positive / negative	40
Phase shifting:in a range between 0o to 270o versus the AC line phase angle	40
Repetition rate:at least 1 per minute	40
Number of tests:at least 5 positive and 5 negative at the selected points.	40
Display set high-resolution mode, AC input use AC 240V.	40
ENVIROMENT REQUIREMENT	41
Operating	41
Storage or Shipment	41
TEST PROCEDURE:	41
REGULATION COMPLIANCE	42
This product comply to the most current revisions of following regulations:	42
Electrostatics Discharge (ESD)	43
QUALITY AND RELIABILITY	44
Quality Assurance	44

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