Philips FPF42C128135UA-52 Vertical line/Vertical bar problem analysis procedure

Page 18

EN 18

 

5.

 

FHP PDP

Service Modes, Error Codes, and Fault Finding

"Vertical line/Vertical bar" problem analysis procedure

Vertical line / Vertical bar

LOGIC board – ABUS-R/L

 

 

 

Y

 

Signal cable is

 

board signal cable has

 

 

 

 

 

 

 

 

 

 

 

 

 

defective

 

abnormal appearance?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

ADM flexible cable has

 

 

 

Y

 

ADM is defective

 

abnormal appearance?

 

 

 

 

 

 

(PDP is defective)

 

N

 

 

 

*1 When turning “ON” the PDP with PDP-go, refer to following procedure:

 

 

 

 

 

 

Give the “PDP-go” signal (*1)

 

 

1. Connect the special LVDS cable (see paragraph “Repair Tools”)

 

 

 

between CN01 and CN06

 

 

 

 

 

 

 

 

 

 

2. Supply power to the PSU

 

One vertical line?

 

Y

 

Tap lightly heat seal portion on

 

 

 

 

 

 

 

 

 

ADM flexible cable

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Any

Y

Heat-melted junction is defective

 

 

 

 

 

changes?

 

(PDP is defective)

 

 

 

 

 

 

 

 

N

 

Panel address has open circuit or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADM IC chip is defective

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(PDP is defective)

 

 

 

 

 

 

 

 

Logic board is defective,

 

Left half of the

 

 

Y

 

or ABUS-R board is defective,

 

 

 

 

or Signal cable is defective,

 

 

panel does

 

 

 

 

 

 

 

 

 

 

 

 

 

or loose contact of

 

not light?

 

 

 

 

 

 

 

 

 

 

 

 

 

CN02 (LOGIC) or CN41(ABUS-R)

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

Right half of the

 

Y

 

 

 

 

 

 

 

 

 

 

panel does

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

not light?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Logic board is defective,

 

 

Va (63V) exists on

Y

or ABUS-L board is defective,

 

N

or Signal cable is defective,

 

 

 

RL41(resistor) on

 

 

 

or loose contact of

 

 

 

 

 

 

 

 

 

 

ABUS-L board?

CN03 (LOGIC) or CN51 (ABUS-L)

 

 

 

N

Power cable (CN52 to CN47) is defective

 

 

 

 

or loose contact of CN47 (ABUS-

R)

 

 

Replace defective parts

(1)

 

 

G_16400_030.eps

 

 

 

 

 

310706

Figure 5-9 Vertical line / vertical bar problem analysis procedure (1/3)

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Contents Contents Colour Television ModuleSerial Numbers Technical SpecificationsSpecifications Index of this chapterConnector positions PWB locationsSome connector layouts Lvds connector CN1 Logic BoardSafety Instructions, Warnings, and Notes Safety InstructionsBoard Swap Instructions Directions for UseMechanical Instructions GeneralSUS Circuit Board Radiation plate positionMechanical Instructions ABUS-L Circuit Board ABUS-R Circuit BoardLogic Board PSU BoardHow to Connect the ComPair Tool Service Modes, Error Codes, and Fault FindingError codes Repair ToolsProcess Flow Advanced PDP Exchange Actual Way-of-WorkingCustomized Repair Repair Instructions 2 42 A4 ALiS Plasma Display PanelRemark Fault Finding Flowcharts Problem analysis procedure PDP repair / board swapProblem Analysis Procedure The entire screen does not light Short-circuit check on Boards and Power Supply Lines ABUS-L board CN52 pins 1 3 or CN52 pins 4 Are shorted? Case of Logic Board replacement ProcedureFollow the Logic Board Exchange Vertical line/Vertical bar problem analysis procedure Replace the defective parts G16400032.eps Horizontal bar problem analysis procedure Logic Board Exchange Logic Board Exchange Fault Fault status Contents #$% Philips Block Diagrams, Test point Overview, and Wave Forms Block DiagramsPower block diagram Test Points Wave FormsCircuit Diagrams and PWB Layouts Voltage Setting ProcedureAlignments Circuit Descriptions and Abbreviation List Board Function DescriptionSpecifications 42A1 42A2 42A3 42A4 Differences between the Versions A1, A2, A3, and A4Layouts SUS Spare Parts List List of abbreviationsRevision List Overview of chassis and manuals, covered by This manual
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