Acer G195HQ manual Panel Power Circuit, Ok Ng

Page 35

3) Panel Power Circuit

White screen

Measure Q302 base is low level?

OK

Check CN301 is solder and Q302, Q301 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

35

Image 35

Contents Acer G195HQ Service Guide T89AM5D8MXAFN2 Service Guide Version and RevisionT89AM6D8MXAFH2 Conventions CopyrightDisclaimer TrademarksPreface Special Notes on LCD Monitors PrecautionsTable of Contents Description Chart of G195HQIntroduction ScopeMeasurement systems Electrical Requirements of G195HQStandard Test Conditions EPA Energy Star LCD Monitor General SpecificationTTL G195HQ General Specifications LCD Panel Specification of G195HQOptical Specifications Factory Preset Timing of G195HQ Monitor Block Diagram RGB Main Board DiagramT89AM6D8MXAFH2 Dual-Input Model DVION/OFF DIM Power Board DiagramMosfet Software Flow Chart Remark 715G2883 1 Symbol DescriptionMain Board Layout Installation Attaching / Removing the Base Screen Position AdjustmentUser Controls Volume Up / DownEColor Management OSD Adjusting the OSD settingsPage Page Using the Right Power Cord Disassembly Procedure Tool for disassembly is as followsPage Page Lvds Cable Page Panel Okng Main Board 1 No PowerNo Picture LED is orange OK NG Panel Power CircuitKey Board No power Power BoardNo Backlight Connector Information FRU Field Replaceable Unit List Chapter Exploded Diagram Model G195HQDescription TPV Part No Acer Part No `ty Picture Description TPV Part No Acer Part No Part ListKEPC9QKO Page DDC2SCL DDC2SDA Main BoardAO3401L TSUM5PFHL Lock type DSUBB+ LVB0M RXO0 CBPC9M5AFQN TSUM1PEL Power board Dbrt VIN AUTO1K Key board