Acer H235H manual Panel Power Circuit, Ok Ng

Page 38

3. Panel Power Circuit

White screen

Measure Q106 base is low level?

OK

Check CN404 is solder and Q106, Q104 is OK?

NG

X401 oscillate waveform is normal

OK NG

Check reset circuit of

U401 is normal

Replace X401

Check Correspondent	NG
Check Correspondent
component.

OK

Replace PANEL

NG	Check Correspondent
	Check Correspondent
	component.

OK

Replace U401

37

Image 38

Contents Acer H235H Service Guide Service Guide Version and Revision Trademarks CopyrightDisclaimer ConventionsPreface Precautions Special Notes on LCD MonitorsTable Of Contents Scope Chart of H235HIntroduction DescriptionMeasurement systems Electrical Requirements of H235HStandard Test Conditions LCD Monitor General Specification 55.2 41.4 Electrical Characteristics LCD Panel Specification of H235HGeneral Specifications Optical Specifications Page Factory Preset Timing of H235H Monitor Block Diagram Main Board Diagram Power Board Diagram Software Flow Chart Remark Main Board Layout Symbol Description Installation Screen Position Adjustment Attaching the BaseFront panel controls Page How to Adjust a Setting Page Using the Right Power Cord Tool for disassembly is as follows Disassembly ProcedurePage Page Page Lvds cable Remove the five screws remarked in red Page Panel No Power No Picture LED is orange Panel Power Circuit OK NGKey Board Power Board No powerNo Backlight Connector Information Pin color display signal cable Exploded Diagram Model H235H FRU Field Replaceable Unit List ChapterDescription TPV Part No Acer Part no `ty Part List Picture Description TPV Part No Acer Part noCBPCRA6ABQ4 Main Board TO252RED TSUMO58GDJ-LF-1 Lvds Wafer Connect Hdmisel Output IC with Heat-sink90G6119-1 Power board KBP208GXxxx