Philips FPF42C128135UA-52 Problem Analysis Procedure The entire screen does not light

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5.

FHP PDP

Service Modes, Error Codes, and Fault Finding

Problem Analysis Procedure: The entire screen does not light

1

The entire screen does not light

Remove CN06

(on LOGIC Board,

PSU-LOGIC cable)

All the boards are connected

Connect the set to mains.

Switch “ON” the set via the mains switch

Vpr2 (3.3 V) on	N
the PSU board is present?

Y

Turn “OFF” AC power

Connect CN 6 (LOGIC)

Turn on AC power

Vpr2 (3.3 V) on	N
the PSU board is present?

Y

Disconnect the mains plug.

Remove the following power connections:

on X-SUS: CN23 (PSU -> X-SUS)

on X-SUS: CN26 (X-SUS -> ABUS-R) on X-SUS: CN32 (X-SUS -> Y-SUS)

on ABUS-R: CN47 (ABUS-R -> ABUS-L)

2

Caution 1: never disconnect connectors or remove boards when the mains plug is connected. Allow discharge of power supplies before disconnecting connectors!

Caution 2: do not interchange boards between different PDPs, this might damage your PDP

PSU board is defective

Replace the

Power Supply

LOGIC board is

defective

Replace Logic Board

Follow the

“Logic Board Exchange” procedure

G_16400_026.eps 310706

Figure 5-5 Problem analysis procedure: the entire screen does not light

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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 Tools Customized Repair Process Flow Advanced PDP Exchange Actual Way-of-Working Remark Repair Instructions2 42 A4 ALiS Plasma Display Panel 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? Follow the Logic Board Exchange Case of Logic Board replacementProcedure 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 FormsAlignments Circuit Diagrams and PWB LayoutsVoltage Setting Procedure Circuit Descriptions and Abbreviation List Board Function DescriptionLayouts Specifications 42A1 42A2 42A3 42A4Differences between the Versions A1, A2, A3, and A4 SUS Spare Parts List List of abbreviationsRevision List Overview of chassis and manuals, covered by This manual