AOC LCD Monitor P/N : 41A50-144 Wartungshandbuch

SERVICE MANUAL 17" LCD Monitor LM730 P/N : 41A50-171

9 2. Clock adjustment Set the Chroma at pattern 63 (cross-talk pattern) or WIN98/95 shut-down mode (dot-pattern). Adjust until the vertical-Stripe-sh

105. CIRCUIT-DESCRIPTION 5-1 SPECIAL FUNCTION WITH PRESS-KEY A). press Menu button during 2 seconds along with plug-in the DC Power cord: That o

11MODULE-TPYE COMPONENT: 1. ADAPTER : CONVERSION-module to convert AC 110V-240V to 12VDC, with 4.16 AMP 2. INVERTER : CONVERSION-module to conv

125-3 SOFTWARE FLOW CHART I. Power-On Subroutine CHART OKCheck White-balance data(6500 &

13II. MAIN SUBROTINE LOOP ) Main loop start Process Power-saving status ( according to below flow

146 A). INTERFACE-BOARD TROUBLE-SHOOTING CHART *Use the PC Win 98 white pattern, with some icon on it, and Change the Resolution to 640x480 60 H

15PANEL-POWER CIRCUIT INVERTER Control Relative Circuit OSCILLATOR BLOCK U200-DATA OUTPUT OK

16II (a) THE SCREEN is Abnormal , stuck at white screen, OSD window can’t appear, but keyboard & LED was normal operation. At general, this symp

17II. (b)The screen had the Vertical Straight Line, might be stuck in Red, Green, Blue That symptom is cause by bad Panel issue ( might be the Source

18 POWER-BLOCK check **Note : the Waveform of U304 pin 2 can determined the power situation 1. stable rectangle waveform with equal duty, f

1 THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MA

19 III.ALL SCREEN HAS INTERFERENCES OR NOISE, CAN’T BE FIXED BY AUTO KEY ** NOTE: There is so many kind of interferences, 1). One is cause by some V

20 There is interferences in DOS MODE NOTE :the criteria of doing AUTO-CONFIGURATION : must be a full-size screen, if the screen not full , the

216 B). INVERTER –MODULE SPEC &TROUBLE SHOOTING CHART For LM720 model , use Hydis panel, and the INVERTER is made by SAMPO SAMPO Parts No: DI

22D) FUNCTION TEST CIRCUIT: CON1 1 2 3 4 5120KΩ 120KΩ 120KΩ 120KΩ 10Ω 10Ω 10Ω 10Ω VT-181 1 2 1 2 VT-181 VT VT 1 2 1 2 CON2 CON3 CON4 C

23 II. TROUBLE SHOOTING BLOCK DIAGRAM A) NO POWER: FAIL PASS FAIL

24 C) OUTPUT CURRENT ABNORMALITY: FAIL PASS

25F) TRANSFORMER ABNORMALITY: FAIL PASS G) INSTRUMENTS FOR TEST: 1. DC

26 7. MECHANICAL OF CABINET FRONT DIS-ASSEMBLY

27BILL OF MATERIAL ========== ====================== ======================== ========= ===== 1 ADPC12416AF LCD ADAPTER ASS'Y 1 PCS 1 CBPC78

281 45L 88607 PE BAG FOR MONITOR 1 PCS 1 50L 500 1 竕絬 1 PCS 1 50L 600 2 HANDLE1 1 PCS 1 50L 600 3 HANDLE2 1 PCS 1 52L 1186 SMALL TAPE

2TABLE OF CONTENTS PAGE 1. SPECIFICATIONS ... 31-1

292 C916 65L305M3322F3 3300PF400VAC/250VAC 1 PCS 2 C900 65L305M4722B2 4700 +-20% 400VAC ACFY 0 PCS 2 C900 65L305M4722B3 4700PF +-20% 400VAC/2

303 IC902 56L 158 2 T 3PIN IC TL431C/T.I. 0 PCS 3 IC905 56L 158 2 T 3PIN IC TL431C/T.I. 0 PCS 3 IC902 56L 158 4 T A HTL431 1PCS 3 I

313 R906 61L1206304 CHIP 300K OHM 1/8W 1PCS 3 R907 61L1206304 CHIP 300K OHM 1/8W 1PCS 3 R908 61L1206304 CHIP 300K OHM 1/8W 1PCS 3 R909 61L1

323 D911 93L 60226 STPS 20H1.0 SGS-THOMSO 0 PCS 3 D912 93L 60226 STPS 20H1.0 SGS-THOMSO 0 PCS 3 D911 93L 60227 MBR20100CT 1PCS 3 D912 93

333 U304 56L 563 1 LM2596S-5.0 SMT 1 PCS 3 U305 56L 563 7 AIC1084-33M 1 PCS 3 U202 56L 566 6 SI9953DY-T1 1 PCS 3 U904 56L 585 4 AIC111

343 R315 61L0603103 CHIPR 10K OHM +-5% 1/1 1 PCS 3 R326 61L0603103 CHIPR 10K OHM +-5% 1/1 1 PCS 3 R327 61L0603103 CHIPR 10K OHM +-5% 1/1 1 P

353 C211 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS 3 C212 65L0603104 12 0.1UF +-10% 16V X7R 1 PCS 3 C213 65L0603104 12 0.1UF +-10% 16V X7R 1 P

363 C615 67L 312100 3 SMD 10uf +-20% 16V 1 PCS 3 C620 67L 312100 3 SMD 10uf +-20% 16V 1 PCS 3 C200 67L 312101 3 SMD 100UF +-20% 16V 1 PCS

373 D200 93L 39147 TZMC5V6-GS08 1 PCS 3 D201 93L 39147 TZMC5V6-GS08 1 PCS 3 D208 93L 39147 TZMC5V6-GS08 1 PCS 3 D209 93L 39147 TZMC5V6

382 C71 67L305L331 6 330UF +-20% 35V 1PCS 2 JP2 88L 304 1S DC POWER JACK 0 PCS 2 JP2 88L 3041CE DC JACK 1PCS 2 F01 95L 90 23 TIN COATED

31. SPECIFICATIONS FOR LCD MONITOR 1-1 General specifications 1. LCD-Panel : Active display area 17 inches diagonal Pixel pitch 0.264 mm x 0.

392 34L 918 CA B STAND BACK COVER 1 PCS 2 34L 919 CA B BASE 1PCS 2 37L 448 1 LCD HINGE 1 PCS 2 Q1L 140 10128 SCREW 6 PCS 2 Q1L1030 10128

4010. PCB LAYOUT MAIN PCB LAYOUT Gmzan2LVDS Keyboard-connector Inverter-connector MCUPanel-Power Control AIC1084 5V to 3.3v LVDS power ( LT

4111. SCHEMATIC DIAGRAM TOP-LEVEL FLOW +2.5VEEPROM1 24C16SDASCLVCC+5VMICRO CONTROLLER WinbondHDATA0MFB7MFB8MFB9HCLKHFSRXDTXDIRQSDASCLVCCTCLK

ADC-AGND+2.5VPCLKAR20675 IRQC2200.1 uFGNDPD0PD7PD13C2270.1 uFD2031N4148A C+5V+3.3VL20701 2PGNDTCLKRVDDAPD40CN200HEADER 141234567891011121314+5V+5VGNDC

TX3+EPD11TXO0L603BEAD (120)TX1+ETXE1C6160.01UFTXO5TXO8ADC GNDAPD[0..5]TX0-OTXE1PD28+10uF16VC607PD46PD39U904LT1117312INADJOUTC6010.1uFPD39AVDD_3.3PD16P

2C9440.1 uF+5VR31110 KCN303HEADER 512345GNDPW5V-ONC30633 pFCP3011000 pF15684327R3400R43110 K(OP)GNDR3034.7KGNDR32910 KU3028XC51/PLCC35234567894422242

3C3080.1 uFL906CHOKE1 2C3110.1 uFC945470uF/16VR3100+3.3VR3054.7KGND+5VFB301INDUCTOR-P2 146 53R30610KL905CHOKE1 2(OP)+12V+3.3V715L820-2-2APOWERSIEMENS

41-2 LCD MONITOR DESCRIPTION The LCD MONITOR will contain an main board, an Inverter module, keyboard, External Adapter which house the flat panel

52. PRECAUTIONS AND NOTICES 2-1 ASSEMBLY PRECAUTION (1) Please do not press or scratch LCD panel surface with anything hard. And do not soil LCD

63. OPERATING INSTRUCTIONS This procedure gives you instructions for installing and using the LCD monitor display. 1. Position the display on the d

74. ADJUSTMENT 4-1 ADJUSTMENT CONDITIONS AND PRECAUTIONS Adjustments should be undertaken only on following function : Contras , Brightness, Black

8 II. Gain adjustment : a. adjust 7200 color-temperature 1. Set the Contrast of OSD function to 45 and Adjust Brightness to chroma 7120