Mitsubishi LCD1920NX Wartungshandbuch

COLOR MONITOR MultiSync LCD1920NX MODELS LCD1920NX (A)/-BK(A)/(B)/-BK(B) 200208 08EA1AAF 08EA2AAF 08EA1ABF 08EA2ABF SERVICE MANUAL PART NO. 59991060

1-7 Quick Installation –continuedRemove Monitor Stand for MountingTo prepare the monitor for alternate mounting purposes:1.Disconnect all cables.2.Pla

7-9 2.4.3 Circuit diagram

7-10 2.4.4 Pin description Symbol Pin # I/O Description B_IN10 1 I Channel B Data Input Color Blue (LSB) B_IN11 2 I Channel B Data Input Color

7-11 R_OUT0_O 52 O Output Color Red Odd Pixel (right pixel) R_OUT1_O 53 O Output Color Red Odd Pixel (right pixel) R_OUT2_O 54 O Output Color R

7-12 R_IN05 111 I Channel A Data Input Color Red R_IN06 112 I Channel A Data Input Color Red R_IN07 113 I Channel A Data Input Color Red (MSB)

7-13 2.4.5 Functional description The AM121-2 has the following major function block Input mode detection and auto calibration block Buffer memory an

7-14 2.6 CPU (MTV112MN32) description 2.6.1 CPU internal block The MTV112MN32 micro-controller is an 8051 CPU core embedded device specially tailored

7-15 2.6.3 Pin description Pin# Name Type 40 42 44 Description P1.0 I/O 1 1 2 General purpose I/O P1.1/HALFV I/O 2 2 3 General purpose I/O /

7-16 2.6.4 H/V-sync processing H/V Polarity Detection The Polarity functions detect the input HSYNC/VSYNC high and low pulse duty pluse. If the high

7-17 2.6.5 DDC & IIC Interface DDC1 Mode MTV112MN32 enters DDC1 mode after Reset. In this mode, VSYNC is a data clock. The HSCL pin should remain

7-18 2.7 LVDS description 2.7.1 Circuit The 48-bit digital signal output from the scaling IC (IC02) is entered in the LVDS transmitter (IC36, IC37).

1-8 6OperationsTo turn the monitor on or off, push the power button (Indication E) on the front ofthe monitor. When the power light (Indication F) tur

7-19 2.7.2 General description The THC63LVDM83A transmitter converts 28 bit CMOS/TTL data into four LVDS (Low Voltage Differential Signaling) data st

7-20 2.8 DDC circuit description 2.8.1 Analog circuit 2.8.2 Digital circuit 2.8.3 General description The EEPROM for DDC are two piece

7-21 2.9 Power system circuit and description The LCD1920NX uses an external power adaptor to provide the DC+12 voltage. In order to greatly reduce t

7-22 2.10 Over voltage protection Over voltage protection is needed on any power system. If some failure occurs and the voltage of +5Vx is too high,

7-23 2.11 TMDS signal process 2.11.1 Circuit and description This product uses IC11 (SiL153B) for digital interface, IC14 (24C02) is digital interfac

7-24 2.11.2 Chip general description IC11 uses PanelLink Digital technology to support displays ranging from VGA to SXGA (25-135MHz) which is ideal f

7-25 2.11.4 Pin description Pin Name Pin # Type Description SCDT 8 Out Sync Detect. A HIGH level is outputted when DE is actively toggling indicat

7-26 Output Pins Description Pin Name Pin # Type Description QE23 - QE0 See SiL161A Pin Diagram Out Output Even Data [23:0] corresponds to 24-bit

7-27 Reserved Pin Description Pin Name Pin # Type Description Reserved 99 In Must be tied HIGH for normal operation. Power and Ground Pin Descri

7-28 2.12 Waveforms DE (IC02 Pin34) Vsync (IC02 Pin32) Hsync (IC02 Pin31) Data-clk (IC02 Pin33) Vsync & Hsync (CH1:V

1-9 7OSD Main MenuFor screen adjustments, press the [MENU] button to display the OSD (On-Screen Display)Main Menu shown below. Press the [+] or [–] bu

7-29 Free-run Hsync +5Vx switching power frequency (D19) VLCD switch power frequency(D20) Input signal (CH1:Hsync CH2:Data) Input

7-30 2933 PFD (CH1:IC03 Pin4 CH2:IC03 Pin5) PLL output clk (IC03 Pin3) SOGIN (IC01 Pin14) “-“; ”function”; ”+”; ”select” (WO4 Pins 1~4)

7-31 OSM Data (CH1:IC04 Pin15 ) vs. Digital Vsync & DE (CH1:Vsync CH2:DE) OSM DE (CH2:IC04 Pin12) Digital Hsync & DE (CH1:Hsync CH2

REPLACEMENT PARTS LISTThe components specified for Model LCD1920NX(A)SYMBOLPart No for AmTRANPart No for NMV DESCRIPTION*** ICS ***IC01 0430-800

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONQ08 0410-0000-2106 79PZ0129 TRANSISTOR 2SA673AC TO-92Q09 0410-5000-1610 79PZ0130 TRANSISTOR M

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONINV 0500-0105-0302 79PZ0008 INVERTER DC-AC T65I008.00MAINBD 3190-0142-0150 79PZ0014 LCD MAIN BD

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONWHFI 0460-3430-0130 79PZ0007 WH FI-X30S-H/DF14-30S 157WHPH8 0460-1008-0110 79PZ0005 WH PH8P-PH8P

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONPR60 0141-4709-3851 79PZ0107 ARRAY RES. A(X) 47H 4R JPR61 0141-4709-3851 79PZ0107 ARRAY RES. A(

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR142 0130-3901-0055 79PZ0093 RES. CF 3.9K 1/10W JR143 0130-2401-0055 79PZ0085 RES. CF 2.4K 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR196 0130-2209-0055 79PZ0084 RES. CF 22H 1/10W JR197 0130-0000-0055 79PZ0061 RES. CF 0.0H 1/10W

1-10 8OSD Main Menu –continuedLCD ADJUST Sub-Menu (Analog input only): Under the Main Menu,select LCD ADJUST using the [+] or [–] button, then press [

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR64 0130-1500-0055 79PZ0072 RES. CF 150H 1/10W JR65 0130-1500-0055 79PZ0072 RES. CF 150H 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC12 0101-1471-1311 79PZ0042 E/C GEN. 470UF 25V 105' FC124 0111-3104-2536 79PZ0051 C/M MUL

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC178 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC179 0111-3104-2536 79PZ0051 C/M MULTI. 0.

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC45 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC46 0111-3104-2536 79PZ0051 C/M MULTI. 0.

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC99 0111-3470-5106 79PZ0059 C/M MULTI. 47PF 50V NPO 8-12

REPLACEMENT PARTS LISTThe components specified for Model LCD1920NX-BK(A)SYMBOLPart No for AmTRANPart No for NMV DESCRIPTION*** ICS ***IC01 0430-

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONQ08 0410-0000-2106 79PZ0129 TRANSISTOR 2SA673AC TO-92Q09 0410-5000-1610 79PZ0130 TRANSISTOR M

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONINV 0500-0105-0302 79PZ0008 INVERTER DC-AC T65I008.00MAINBD 3190-0142-0150 79PZ0014 LCD MAIN BD

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONWHFI 0460-3430-0130 79PZ0007 WH FI-X30S-H/DF14-30S 157WHPH8 0460-1008-0110 79PZ0005 WH PH8P-PH8P

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONPR60 0141-4709-3851 79PZ0107 ARRAY RES. A(X) 47H 4R JPR61 0141-4709-3851 79PZ0107 ARRAY RES. A(

1-11 9OSD Main Menu –continuedMISC Sub-MenuUnder the Main Menu, select MISC using the [+] or [–] button, then press [MENU] button toenter MISC Sub-Men

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR142 0130-3901-0055 79PZ0093 RES. CF 3.9K 1/10W JR143 0130-2401-0055 79PZ0085 RES. CF 2.4K 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR196 0130-2209-0055 79PZ0084 RES. CF 22H 1/10W JR197 0130-0000-0055 79PZ0061 RES. CF 0.0H 1/10W

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR64 0130-1500-0055 79PZ0072 RES. CF 150H 1/10W JR65 0130-1500-0055 79PZ0072 RES. CF 150H 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC12 0101-1471-1311 79PZ0042 E/C GEN. 470UF 25V 105' FC124 0111-3104-2536 79PZ0051 C/M MUL

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC178 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC179 0111-3104-2536 79PZ0051 C/M MULTI. 0.

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC45 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC46 0111-3104-2536 79PZ0051 C/M MULTI. 0.

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC99 0111-3470-5106 79PZ0059 C/M MULTI. 47PF 50V NPO 8-24

REPLACEMENT PARTS LISTThe components specified for Model LCD1920NX(B)SYMBOLPart No for AmTRANPart No for NMV DESCRIPTION*** ICS ***IC01 0430-800

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONQ08 0410-0000-2106 79PZ0129 TRANSISTOR 2SA673AC TO-92Q09 0410-5000-1610 79PZ0130 TRANSISTOR M

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONINV 0500-0105-0302 79PZ0008 INVERTER DC-AC T65I008.00MAINBD 3190-0142-0150 79PZ0014 LCD MAIN BD

1-12 10Safety Precautions and MaintenanceFOR OPTIMUM PERFORMANCE, PLEASE NOTE THEFOLLOWING WHEN SETTING UP AND USINGTHE MULTISYNC® LCD COLOR MONITOR:•

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONWHFI 0460-3430-0130 79PZ0007 WH FI-X30S-H/DF14-30S 157WHPH8 0460-1008-0110 79PZ0005 WH PH8P-PH8P

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONPR57 0141-4709-3851 79PZ0107 ARRAY RES. A(X) 47H 4R JPR58 0141-4709-3851 79PZ0107 ARRAY RES. A(

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR138 0130-1002-1859 79PZ0068 RES. CF 10K 1/4W JR14 0130-1500-1858 79PZ0074 RES. CF 150H 1/8W J

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR190 0130-1001-0055 79PZ0066 RES. CF 1.0K 1/10W JR192 0130-4701-0055 79PZ0096 RES. CF 4.7K 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR59 0130-0000-0055 79PZ0061 RES. CF 0.0H 1/10W JR60 0130-1001-0055 79PZ0066 RES. CF 1.0K 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC117 0111-3100-5106 79PZ0048 C/M MULTI. 10PF 50V NPOC118 0101-1331-1211 79PZ0040 E/C GEN. 330UF

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC175 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC176 0111-3104-2536 79PZ0051 C/M MULTI. 0.

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC42 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC43 0111-3104-2536 79PZ0051 C/M MULTI. 0.

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC96 0111-3470-5106 79PZ0059 C/M MULTI. 47PF 50V NPOC97 0111-3470-5106 79PZ0059 C/M MULTI. 47P

REPLACEMENT PARTS LISTThe components specified for Model LCD1920NX-BK(B)SYMBOLPart No for AmTRANPart No for NMV DESCRIPTION*** ICS ***IC01 0430-

1-13 CORRECT PLACEMENT AND ADJUSTMENT OF THE MONITORCAN REDUCE EYE, SHOULDER AND NECK FATIGUE. CHECK THEFOLLOWING WHEN YOU POSITION THE MONITOR:• For

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONQ08 0410-0000-2106 79PZ0129 TRANSISTOR 2SA673AC TO-92Q09 0410-5000-1610 79PZ0130 TRANSISTOR M

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONINV 0500-0105-0302 79PZ0008 INVERTER DC-AC T65I008.00MAINBD 3190-0142-0150 79PZ0014 LCD MAIN BD

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONWHFI 0460-3430-0130 79PZ0007 WH FI-X30S-H/DF14-30S 157WHPH8 0460-1008-0110 79PZ0005 WH PH8P-PH8P

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONPR57 0141-4709-3851 79PZ0107 ARRAY RES. A(X) 47H 4R JPR58 0141-4709-3851 79PZ0107 ARRAY RES. A(

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR138 0130-1002-1859 79PZ0068 RES. CF 10K 1/4W JR14 0130-1500-1858 79PZ0074 RES. CF 150H 1/8W J

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR190 0130-1001-0055 79PZ0066 RES. CF 1.0K 1/10W JR192 0130-4701-0055 79PZ0096 RES. CF 4.7K 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONR59 0130-0000-0055 79PZ0061 RES. CF 0.0H 1/10W JR60 0130-1001-0055 79PZ0066 RES. CF 1.0K 1/10

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC117 0111-3100-5106 79PZ0048 C/M MULTI. 10PF 50V NPOC118 0101-1331-1211 79PZ0040 E/C GEN. 330UF

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC175 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC176 0111-3104-2536 79PZ0051 C/M MULTI. 0.

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC42 0111-3104-2536 79PZ0051 C/M MULTI. 0.1UF 25V Y5VC43 0111-3104-2536 79PZ0051 C/M MULTI. 0.

1-14 Specifications12Monitor MultiSync® LCD1920NX™Specifications MonitorLCD Size 19.0" (full 19.0" viewable diagonal area)Type TFT (Thin Fil

SYMBOLPart No for AmTRANPart No for NMV DESCRIPTIONC96 0111-3470-5106 79PZ0059 C/M MULTI. 47PF 50V NPOC97 0111-3470-5106 79PZ0059 C/M MULTI. 47P

PowersequencycontrolcircuitVLCDPDLVDS64LC83PWR_DNTFTpanelH, V, DE, CLK, dataAD9884ADCSOGclockgeneratorcontrolcenter24 bitR G BcontrolregisterDividerDi

MODEL LCD1920NX LCD MAIN BD (1/7) SCHEMATIC DIAGRAM10-1Schematic Diagram

MODEL LCD1920NX LCD MAIN BD (2/7) SCHEMATIC DIAGRAM10-2

MODEL LCD1920NX LCD MAIN BD (3/7) SCHEMATIC DIAGRAM10-3

MODEL LCD1920NX LCD MAIN BD (4/7) SCHEMATIC DIAGRAM10-4

MODEL LCD1920NX LCD MAIN BD (5/7) SCHEMATIC DIAGRAM10-5

MODEL LCD1920NX LCD MAIN BD (6/7) SCHEMATIC DIAGRAM10-6

MODEL LCD1920NX LCD MAIN BD (7/7) SCHEMATIC DIAGRAM10-7

1-15 13FeaturesReduced Footprint: Provides the ideal solution for environments requiringsuperior image quality but with size and weight limitations. T

1-16 TroubleshootingNo picture•The signal cable should be completely connected to the display card/computer.• The display card should be completely se

WARNING The SERVICE PERSONNEL should have the appropriate technical training, knowledge and experience necessary to: • Be familiar with specialized

1-17 15References• BBS (978) 742-8706NEC-Mitsubishi Electronics Display of America Remote Bulletin Board System isan electronic service accessible wit

1-18 16Limited WarrantyNEC-Mitsubishi Electronics Display of America, Inc. (hereinafter “NMD-A”) warrants thisProduct to be free from defects in mater

1-19 17TCO’95MultiSync LCD1920NX (L19GC061) Black ModelCongratulations! You have just purchased a TCO’95 approved andlabeled product! Your choice has

1-20 18reproductive damage in fisheating birds and mammals, due to the bio-accumulative*processes. Flame retardants have been found in human blood and

1-21 TCO’9919MultiSync LCD1920NX (L19GC061) White ModelCongratulations! You have just purchased a TCO’99 approved andlabeled product! Your choice has

1-22 20TCO’99 –continuedaccumulative* processes. Flame retardants have been found in human blood and researchers fearthat disturbances in foetus devel

1-23 21Declaration of the ManufacturerWe hereby certify that the color monitorMultiSync® LCD1920NX (L19GC061)is in compliance withCouncil Directive 73

1-24 2. B Version MultiSync LCD1920NXUser’s ManualUÏivatelská pfiíruãkaBedienerhandbuchΟδηγίες ΧρήσηςManual del usuarioManuel UtilisateurManuale utente

1-25 DECLARATION OF CONFORMITYThis device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions. (1) This device ma

1-26 TCO’95MultiSync LCD1920NX Black ModelCongratulations! You have just purchased a TCO’95approved and labeled product! Your choice hasprovided you w

CONTENTS Page No. USER'S MANUAL ------------------------------------------------------------------- 1-1 SERIAL NUMBER INFORMATION -------

1-27 MultiSync LCD1920NX White ModelCongratulations! You have just purchased aTCO’99 approved and labeled product! Your choicehas provided you with a

1-28 IndexWarning, Caution ... English-1Declaration ... English-1Getting St

1-29 EnglishâeskyDeutschΕλληνικάEspañolFrançaisItalianoNederlandsPolskiРусскийTürkçe

1-30 EnglishEnglish-1DeclarationTO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. ALSO, DO NOT USETHIS UNIT'S POLARI

1-31 English-2Getting StartedCongratulations on your purchase of this TFT LCD Monitor.Please read this section carefully to get instant understanding

1-32 EnglishEnglish-3Quick Installation• Make sure the computer is turned off.• Attach the female end of the power cord (Indication E) to the AC adapt

1-33 English-4Quick Installation - continuedRemove Monitor Stand for MountingTo prepare the monitor for alternate mounting purposes:1. Disconnect all

1-34 EnglishEnglish-5OperationsPush the power button (Indication E) on the front of the LCD monitor to turn it on. When the power light (Indication F)

1-35 English-6OSD Main MenuFor screen adjustments, press the [MENU] button to display the OSD (On-Screen Display) Main Menu shown below. Press the[+]

1-36 EnglishEnglish-7LANGUAGE: Selecting preferred language used in the OSD menus. Under Main Menu, scroll to Language using [+] or[–] button, then pr

1-1 USER'S MANUAL 1. A Version MultiSync® LCD1920NXTM

1-37 English-8Recommended UseSafety Precautions and MaintenanceFOR OPTIMUM PERFORMANCE, PLEASE NOTE THEFOLLOWING WHEN SETTING UP AND USINGTHE MULTISYN

1-38 EnglishEnglish-9• If reflected light makes it hard for you to see your screen, use an anti-glare filter.• Clean the LCD monitor surface with a li

1-39 English-10TroubleshootingNo picture• The signal cable should be completely connected to the display card/computer.• The display card should be co

2-1 Serial Number Information Refer to the serial number information shown below. g g g g g g g g g Manufactured Year : ( Last

3-1 DISASSEMBLY g Before you disassemble the set, turn off power and pull out the power plug. g Use the proper screwdriver. If oversize or undersize

3-2 SYMBOL CODE DESCRIPTION 3 --- TAP. SCREW-TB #3.0*10.0L,NI SYMBOL CODE DESCRIPTION COLOR 4 79PZ0166 BACK COVER CAB. L

3-3 SYMBOL CODE DESCRIPTION 5 --- MAC. SCREW-MB M3.0*4.0L,Zn-Cc SYMBOL CODE DESCRIPTION 6 --- MAC. SCREW-MRFW M3.0*4.0L,NI

3-4 SYMBOL CODE DESCRIPTION 10 --- TAP. SCREW-TB #3.0*10.0L,NI 11 79PZ0013 LCD DISPLAY BD ASS'Y SYMBOL CODE DESCRIPT

3-5 SYMBOL CODE DESCRIPTION COLOR 13 79PZ0162 POWER BUTTON LCD1920NX White 13 79PZ0009 POWER BUTTON LCD1920NX Black 12 79PZ0165 PANEL CAB.

3-6 SYMBOL CODE DESCRIPTION 15 79PZ0004 LCD MODULE 19.0 TFT FLC4" 15

1-2 Warning ... 1Getting Started...

3-7 SYMBOL CODE DESCRIPTION COLOR 16 --- MAC. SCREW-MPSWF M4.0*10.0L,ZN 17 --- HINGE LEFT LCD1920NX 18 --- HINGE RIGHT LCD1920NX 19 79PZ

3-8 SYMBOL CODE DESCRIPTION 23 --- BASE BRACKET + HINGE HOLDER LCD1920NX 24 --- MAC. SCREW-MB M3.0*4.0L,Zn-Cc 23 24

4-1 ADJUSTMENT PROCEDURES TABLE OF CONTENTS Page 1. Application ...

4-2 1. Application This specification shall be applied to the adjustment of the LCD1920NX set. 2. Basic operation 2.1 General conditions Unless other

4-3 2.2.2 Factory mode At the time of adjustment of this model, a suggestion may be given to enter the user (factory) mode. This will be explained be

4-4 3. Set adjustments 3.1 Application This adjustment specification is applicable when the LCD MAIN BD ASSY (MAIN PWB) or the E2PROM is replaced. 3.

4-5 3.3.2 Data writing procedures (1) Connect the data writing unit, jigs, and others for the reception of VESA 1280 × 1024@60Hz (all white). (2) Let

4-6 3.4 Input video signal Preset Mode No. 1 Signal Name VESA 1280*1024 (60) Resolution 1280*1024 Dot Clock (MHz) 108.000 fh (kHz) 63.981 f

4-7 3.5 Setting before shipment CONTRAST : Approx. 60% (with an analog signal input) / Approx. 80% (with a digital signal input) BRIGHTNESS : App

5-1 INSPECTION TABLE OF CONTENTS Page 1. Set Inspection ...

1-3 1TO PREVENT FIRE OR SHOCK HAZARDS, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. ALSO, DO NOT USETHIS UNIT'S POLARIZED PLUG WITH AN EXTENSION

5-2 1. Set Inspection 1.1 Application The inspection procedures specified in this item shall be applied to the inspection of the LCD1920Nx unit. 1.2 I

5-3 1.2.7 Inspection mode setting The respective setting data shall be the data for the VG-819. Signal VG-819 setting values Mode 01 02 03 Not u

5-4 Signal VG-819 setting values Mode 06 07 08 09 10 H CLOCK HPERIOD HDISP HSYNC HBACKP HDSTART HDWIDTH [MHz] [DOT] [DOT] [DOT] [DOT] [DOT]

5-5 Signal VG-819 setting values Mode 11 12 13 14 15 H CLOCK HPERIOD HDISP HSYNC HBACKP HDSTART HDWIDTH [MHz] [DOT] [DOT] [DOT] [DOT] [DOT]

5-6 Signal VG-819 setting values Mode 16 17 18 19 20 H CLOCK HPERIOD HDISP HSYNC HBACKP HDSTART HDWIDTH [MHz] [DOT] [DOT] [DOT] [DOT] [DOT]

5-7 Signal VG-819 setting values Mode 21 22 23 24 25 Not used H CLOCK HPERIOD HDISP HSYNC HBACKP HDSTART HDWIDTH [MHz] [DOT] [DOT] [DOT] [DO

5-8 Signal VG-819 setting values Mode 26 27 28 29 30 H CLOCK HPERIOD HDISP HSYNC HBACKP HDSTART HDWIDTH [MHz] [DOT] [DOT] [DOT] [DOT] [DOT]

5-9 Signal VG-819 setting values Mode 31 32 33 34 35 H CLOCK HPERIOD HDISP HSYNC HBACKP HDSTART HDWIDTH [MHz] [DOT] [DOT] [DOT] [DOT] [DOT]

5-10 Signal VG-819 setting values Mode 36 37 38 39 40 H CLOCK HPERIOD HDISP HSYNC HBACKP HDSTART HDWIDTH [MHz] [DOT] [DOT] [DOT] [DOT] [DOT]

5-11 Note 1: According to the designation of sync signals and the setting of each inspection mode, the analog outputs (BNC) of the signal generator sh

1-4 2Getting StartedCongratulations on your purchase of this LCD Monitor.Please read this section carefully to get an instant understanding ofthis pro

5-12 1.3 Operational description of OSD control Each OSD function is available by pressing the buttons (MENU, -, +, AUTO) located on the lower section

5-13 1.4 POWER ON Turn on the power supply in the procedures specified below. 1) Make connections according to the mode in which the VG-819 cable is

5-14 1.5.2 Inspection of automatic adjustment function 1) Enter Signal 26 through D-SUB port. (A screen of one-dot missing plus external frame) 2) D

5-15 1.5.3 Inspection of input signal discrimination Purpose of this inspection: Intended to confirm that a normal display is presented for any signal

5-16 1.5.4 Inspection of VIDEO DETECT function This inspection shall be carried out to confirm that the [VIDEO] function of the OSD menu is normally a

5-17 2. External inspection on the LCD module 2.1 External inspection of the display surface The display surface shall be visually inspected according

5-18 No Item description Standard Remark 1 dot (R/G/B) N≤4 2 dots adjacent ≤1 ≥3 dots N=0 Bright Tot al N ≤4 1 dot N≤5 2 dots Adjacent N≤2

5-19 No Content FLC48SXC8V Specification (FJ) Remarks Clear mura (with clear border) By 8% ND filter Unclear mura (with unclear border) By 8% ND filt

5-20 3. Inspection of PLUG & PLAY communication and OSD for model name/ serial number 3.1 System Connection This system should be connected as sho

5-21 3.3 Operational procedures 1. Start PNP.EXE from DOS mode or the Windows DOS prompt. 2. Operation key assignment • Determine the operation mode w

1-5 3Adjusting the MonitorPress down on the stand and gently adjust the monitor to a suitableviewing angle (see Figure below). Please note that this m

5-22 f. Upon normal completion, a screen display is presented "OK". g. A power-supply switch is switched off -> turned on, A signal gen

6-1 TROUBLE SHOOTING TABLE OF CONTENTS Page 1. Power is not available ...

6-2 1. POWER is not available Confirm if there is any withdrawal of internal cables, disco

6-3 2. No image display 2.1 LED green, but no OSD, no back light and no image NO YES Is the LED turned green

6-4 2.2 LED green, and no OSD and no back light Is +12V available at L01and L02? NO YES Fai

6-5 2.3 LED green, and OSD present, but no image Is there a VIDEO signal at W01,and H-sync V-sy

6-6 3. Picture errors 3.1 High-light in white or black OK NG Is High-light in white or black? N

6-7 3.2 Image is unclear Failure point 1) Change to resolution of 1280x1024.2) Adjust [SMOOTHING] func

6-8 3.3 Image noise Failure point Analog : Confirm the input signal level of D-SUB (Pin10, Pin6 of IC06) Dig

6-9 4. Others operational error 4.1 DDC read error 1) D-SUB • Check the power supply for IC26. • Check the clock signal waveform at Pin 6 of IC26 and

1-6 GCABFED4Quick Installation• Make sure the computer is turned off.• Attach the female end of the power cord (Indication E) to the AC adapter(Indica

6-10 5. Switching power circuit failure NO YES Is +12V power source available? (IC18 pin7,

6-11 END Failure point 1) Check +5V ok? 2) Check IC08 ok? 3) Check the value of R198, R199.NO YES

7-1 CIRCUIT DESCRIPTION TABLE OF CONTENTS Page 1. Summary ...

7-2 1.Summary LCD1920NX is a dual input, multi-frequency and multi mode color TFT LCD monitor. It supports different resolutions including SXGA, XGA,

7-3 2. Circuit description 2.1 System block diagram PowersequencycontrolcircuitVLCDPDLVDS64LC83PWR_DNTFTpanelH, V, DE, CLK, dataAD9884ADCSOGclockgene

7-4 2.2 Analog signal input circuit This product uses 74F153 as a signal switch in order to support composite SYNC and SYNC on Green ti

7-5 2.3 A/D converter The A/D converter (IC01) is used to convert the RGB video signals of about 0.7Vp-p into the digital signals of odd-numbered a

7-6 The AD9884 is a complete 8-bit 140MSPS, monolithic graphics digitizer optimized for digitizing RGB graphics signals from personal computers and w

7-7 2.4 AM121-2and peripheral circuits The AM121-2 is enhanced version of the AM100 chip. It is an IC designed for dual-interface SXGA TFT LCD monito

7-8 2.4.2 AM121-2 internal block diagram Input mode detection and auto calibration AM121-2 can handle up to 14 different modes, it can automatically