Philips FPF42C128135UA-52 Case of Logic Board replacement, Follow the Logic Board Exchange

Page 17

Service Modes, Error Codes, and Fault Finding

FHP PDP

 

5.

 

EN 17

4

Connect CN23 (X-SUS) and

CN32 (Y-SUS), and give the “PDP-go” signal (*1)

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

1.Connect the special LVDS cable (see paragraph “Repair Tools”) between CN01 and CN06

2.Supply power to the PSU

Are Vcc (5V), Vs (85V),

N

and Va (63V) present on

 

the PSU board?

 

Y

Turn “OFF” AC power Connect SDM (with CN34 and CN35)

Give the “PDP-go” signal (*1)

On PSU board

N

Vcc (5V), Vs (85V)

 

exist ?

 

Y

Turn “OFF” AC power.

Connect CN 26 (X-SUS)

Give the “PDP-go” signal (*1)

PSU board

N

Va (63V) exists ?

 

Y

Turn “OFF” the AC power.

Connect CN 47 (ABUS-R)

Give the “PDP-go” signal (*1)

PSU board

N

Va (63V) exists ?

 

Y

 

End of analysis

Logic board, or X-SUS board, or

Y-SUS board is defective

In case that Vs Power system or Va Power system of X-SUS or Y-SUS is defective, Vcc starts but goes down in a few seconds.

SDM or PDP is defective

Turn “OFF” AC power.

And remove ADMs from following connectors

CN43, CN44, CD45, CN46

Afterwards give the “PDP-go” signal (*1)

PSU board

N

ABUS-R board is defective

Va (63V) exists ?

 

 

 

Y

 

ADM is defective

 

(PDP is defective)

 

 

Turn “OFF” AC power.

And remove ADMs from following connectors

CN53, CN54, CD55, CN56

Afterwards give the “PDP-go” signal (*1)

PSU board

N

ABUS-L board is defective

Va (63V) exists ?

 

 

 

 

 

Y

 

 

ADM is defective

 

 

 

 

 

 

(PDP is defective)

 

 

 

 

 

 

Replace defective boards

 

 

(In case of Logic Board replacement:

 

 

Follow the “Logic Board Exchange”

 

 

procedure!)

 

 

 

G_16400_029.eps

 

 

 

310706

Figure 5-8 Short circuit check on boards and power supply lines (3/3)

Image 17
Contents Colour Television Module ContentsSpecifications Technical SpecificationsSerial Numbers Index of this chapterPWB locations Connector positionsLvds connector CN1 Logic Board Some connector layoutsSafety Instructions Safety Instructions, Warnings, and NotesMechanical Instructions Directions for UseBoard Swap Instructions GeneralRadiation plate position SUS Circuit BoardABUS-L Circuit Board ABUS-R Circuit Board Mechanical InstructionsPSU Board Logic BoardError codes Service Modes, Error Codes, and Fault FindingHow to Connect the ComPair Tool Repair ToolsCustomized Repair Process FlowAdvanced PDP Exchange Actual Way-of-Working Remark Repair Instructions2 42 A4 ALiS Plasma Display Panel Problem analysis procedure PDP repair / board swap Fault Finding FlowchartsProblem 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 Block Diagrams, Test point Overview, and Wave FormsTest Points Wave Forms Power block diagramAlignments Circuit Diagrams and PWB LayoutsVoltage Setting Procedure Board Function Description Circuit Descriptions and Abbreviation ListLayouts Specifications 42A1 42A2 42A3 42A4Differences between the Versions A1, A2, A3, and A4 SUS List of abbreviations Spare Parts ListOverview of chassis and manuals, covered by This manual Revision List

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