AOC 919SWA manual Inverter / Power Board, Audio

Page 16

19" LCD Color Monitor

 

AOC 919Swa

6.2.2 Inverter / Power Board

AC input

Lamp

 

 

 

 

Transformer

 

 

16V

EMI filter

 

Bridge

 

 

 

 

 

(T901)

 

Rectifier diodes

 

 

Rectifier,Filter

 

 

5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Start Circuit

(R904,R905

R906)

 

 

Power Switch

PWM Control IC

 

LD7576

 

(Q901)

(IC901)

 

 

 

 

 

Photocoupler

 

Regulator

(IC903)

 

(IC904)

 

 

 

 

 

 

 

MOSFET

 

Output

 

Transformer

 

(Q805,Q806)

16V

 

 

 

Circuit

 

(PT801)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PWM Control IC

ON/OFF

Feedback

 

OZ9938GN

DIM

Circuit

 

(IC801)

PID

 

 

 

 

 

 

 

 

 

 

Audio

+5V

Audio Power Amplifier

CN601(Phone Jack)

APA2069JITUL

 

(IC601)

CN602

 

 

16

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Contents Service Revision Date Revision History T99LHDDBWKA1ANET992HDDBWKA2ANE IVO M190MWW3Monitor Specifications Monitor Block Diagram LCD Monitor DescriptionAdjusting the Picture Operating InstructionsGeneral Instructions Control ButtonsDCR LED Indicator OSDDDC-CI Status LED ColorInput/Output Specification Input Signal ConnectorFactory Preset Display Modes Pin Number Pin Side of the Signal CablePanel Specification Display CharacteristicsM190MWW3 TPM190A1Optical Characteristics M190MWW3 TPM190A1TFT LCD Module Electrical CharacteristicsBack Light Unit LCD Color Monitor AOC 919Swa Block Diagram Software Flow ChatRemark Electric Block Diagram Main BoardFlash Memory DDC1SDA DDC1SCL Eeprom M24C02-WMN6TPInverter / Power Board AudioSchematic Main BoardLCD Color Monitor AOC 919Swa Output R438 OHM 2W Power Board Power 8XFMRGND 1 009G6005 IC with Heat-sink90G6295-3 PCB Layout LCD Color Monitor AOC 919Swa Power Board LCD Color Monitor AOC 919Swa Key Board Maintainability Equipments and Tools RequirementTrouble Shooting No powerNo picture LED orange White Screen OK NGPower Board LED No Backlight Key Board White- Balance, Luminance Adjustment LCD Color Monitor AOC 919Swa Monitor Exploded View Description BOM List Location Description RemarkConnector PW9941LHD1SMT Power Board for SMT HS1Cbpc Label SUB 15PIN Vertical Conn with ScrewIC AP1117E18LA SOT223-3L Anachip IC M24C04-WMN6TP SO8PMBS3906/PHILIPS-SMT06 KEC 2N3904S-RTK/PSRST Chip 390R 1/16W 5% Fenghua Chip 22PF 50V NPO Chip BeadChip Bead 300OHM OHM BeadFET FDS8958A SO-8 RST Chip MAXRST Chipr 5.1K 1ST ChiprRST Chipr MAX0R05 4A 1/4W Fenghua RST ChiprNPO X7RRLZ 5.6B Llds PW9941LHD1AI Power Board for AI Tact Switch 2PINJumper Wire Diode LBAV70LT1G SOT-23 LRCPower Board PCB