Sony PFM-500A1WE Schematic

TROUBLE SHOOTING GUIDE

MODEL

.............. ......... ....................

DEST. CHASSIS NO. MODEL DEST. CHASSIS NO.

PFM-500A1WU US/CND PFM-500A1WE AEP

.............. ......... ....................

MB-514 RM-921

PFM-500A1WU/WE Flat Panel Monitor MB-514 Mounting Bracket RM-921 Remote Commander

FLAT PANEL MONITOR

! WARNING

This manual is intended for qualified service personnel only. To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.

! WARNUNG

Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt. Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung dazu besitzen.

! AVERTISSEMENT

Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement.

PFM-500A1WU/500A1WE

Table of Contents

1. Introduction

1-1. PDP Unit (FPF42C10660UD) Analysis Manual ........................................1-1

1-2. Test Equipment ...........................................................................................1-2

1-3. Burn-in Device ............................................................................................1-3

1-4. Measuring Device .......................................................................................1-3

1-5. Parts List and Their Outlined Description of the PDP Unit........................1-4

2. Repair Flow........................................................................................... 2-1

3. Data

3-1. Check Point (X-SUS) .................................................................................. 3-1

3-2. Check Point (Y-COM) ................................................................................3-2

3-3. Check Point (DC/DC) ................................................................................. 3-3

3-4. Check Point of Voltage (X-SUS, Y-SUS) ..................................................3-4

3-5. Glossary....................................................................................................... 3-5

3-6. Connection to Test Equipment....................................................................3-6

3-7. Test Equipment ...........................................................................................3-7

3-8. Photo (Burn-in Unit) ................................................................................... 3-8

3-9. Burn-in Unit Instruction Manual.................................................................3-9

3-10. Criteria Table ............................................................................................3-13

3-11. Voltage Setting Procedure.........................................................................3-19

3-12. Display Test Manual ................................................................................. 3-24

3-13. VG-826 Program Display Pattern .............................................................3-28

3-14. Fixed Display Exclusive-key Pattern ........................................................3-30

3-15. Decision Criteria Table ............................................................................. 3-31

3-16. PC Board Replacing Proceduce ................................................................ 3-32

3-17. Each PC Board Installation Screw Position/Connector Position ..............3-33

PFM-500A1WU/500A1WE

1. Introduction

1-1. PDP Unit (FPF42C10660UD) Analysis Manual

This manual explains the failure analysis procedure l for PDP unit and it is applied to analysis by the test equipment below. To perform failure analysis, see the data, as follows :

. Repair flow

. Check point (X-SUS) ............................ 3-1.

. Check point (Y-COM) .......................... 3-2.

. Check point (DC/DC) ........................... 3-3.

. Voltage check........................................ 3-4.

. Glossary ................................................ 3-5.

. Connection to test equipment ................ 3-6.

. Test equipment....................................... 3-7.

. Photo (Burn-in unit) .............................. 3-8.

. Burn-in unit Instruction Manual ........... 3-9.

. Criteria table.......................................... 3-10.

. Voltage setting procedure ..................... 3-11.

. Display test Manual .............................. 3-12.

. PC board replacing procedure............... 3-16.

Always, allow the self electrical discharge about 30 seconds between shutting down the external power supply and the operation of replacing each PC board or disconnecting connectors in the repair and analysis process.

PFM-500A1WU/500A1WE

1-1

1-2. Test Equipment (3-6, 7)

Display test is conducted with the facilities listed below and whether the test results can satisfy the criteria is determined by the display special point standard in the 3-11.

1. Video signal generator : Astro design VG-826 (Refer to the 3-12)

2. External keyboard : Astro design RB-614C (Refer to the 3-12)

3. PDP function test switch (APC/DISP ENABLE/HQEN/luminance variable volume)

1 APC (monitoring power consumption/abnormal operation)

ON: NEW.APC mode [Stability hour (about 3 minutes)]

It can monitor the power consumption on the circuit to maintain the rating power. In addition, it can monitor the X/YSUS operation and shut down the PDP circuit immediately when any abnormal operation is detected. This prevents further damage to the circuit.

OFF: OLD.APC mode [Stability hour (about 10 seconds)]

In this mode, the internal power supply is activated forcibly to run the electricity on the circuit, regardless of whether abnormal operation is detected. Set this mode with care for failure analysis.

The use of APC switch in “OFF” mode may likely cause a secondary failure. Thus, handle this switch with care. Do not power on the external power supplies at one time.

2 DISP ENABLE (screen display ON/OFF)

ON : Every operation of displaying data is disabled. OFF : Every operation of displaying data is enabled.

3 HQEN ENABLE (false frame line deletion function)

ON : The difference of each step is lightened in gradation display OFF : Each step in gradation is displayed as it is and false frame line can be seen.

4 Luminance variable volume (for changing the screen luminance)

Turn the volume to the right to increase the brightness or turn the volume to the left to decrease the brightness.

4. External power supplies (See the 3-7)

1 Vcc 0 ~ 6 V 10 A 2 Va 0 ~ 110 V 2.0 A 3 Vs 0 ~ 250 V 15 A

* Observe the following sequence, as shown below when using external power supplies: Power ON : Vcc → Va → Vs Power OFF : Vs → Va → Vcc

5. Power supply for exclusive use (See the 3-6) FPF10P-AC100/240 B Rev.B

1-2

PFM-500A1WU/500A1WE

1-3. Burn-in Device (3-8) 1

(for the Handling Method, Refer to 3-9.)

1-4. Measuring Device

1 Oscilloscope...................... 1 (equivalent to 100 MHz)

2 Digital Multimeter ............ 1

3 Analog tester ..................... 1

PFM-500A1WU/500A1WE

1-3

1-5. Parts List and Their Outlined Description of the PDP Unit

No NAME Drawing number Basic operation outline

1 Panel FPF10R-UCPANEL Processes and displays data in image processing 2 Logic FPF10R-LOGIC12 Stores and processes data and monitors the power consumption and

PC board X/YSUS operation.

3 XSUS FPF10R-XSUS Controls reservation, deletion, and writing of display data.

PC board

4 YSUS FPF10R-YSUS13 Controls writing and reservation of display data.

PC board

5 RBUS FPF10R-ABUSR Controls output of screen data to ACOM1, 2.

PC board

6 LBUS FPF10R-ABUSL Controls output of screen data to ACOM4, 5.

PC board

7 DC/DC FPF10R-DC/DC Generates the secondary power supplies Ve. Vsc.

PC board Vw. and _Vy by the external power supply.

Model UD01

ROM 197G 197L YSUS NA21701-B192 NA21701-B241

Controls output of screen data to ACOM3.

YCOM UP

YCOM DOWN

LBUS PC board

Fuse mounting position

CN43

CN44

ACOM5

YSUS PC board

CN18

CN13

CN41

CN42

CN40

CN17

CN12

ACOM4

CN30

CN20CN37 CN37

CN5CN4

CN3

CN18

DC/DC

CN49

CN25CN24CN23

CN2

Logic PC board

1 or 2

CN9

CN16

ACOM3 ACOM2 ACOM1

CN1

CN7

CN50

XSUS PC board

CN48

CN10

CN15

CN11

CN51

CN52

CN14

XBUS UP

XBUS DOWN

RBUS PC board

1-4

PFM-500A1WU/500A1WE

XBUS UP Display control section

XBUS DOWN Display control section

1/2 1/2

Panel

1/2

1/5

1/5 1/5 1/5 1/5

ACOM1 ACOM2 ACOM 3 ACOM4 ACOM5

Display control section

FUSE2 FUSE1

RBUS control section LBUS control section

Display control section

FUSE201

Logic control

Display control section

FUSE2

Display control section

FUSE1

section

1/2

YCOM UP Display control section

YCOM DOWN Display control section

PFM-500A1WU/500A1WE

1-5

2. Repair Flow

Acceptance of returned unit

Check the contents of a fault

Before repair flow

Check the contents of a fault according to IRIS CODE table.

Appearance inspection

Appearance defect?

Starts repair flow

Repair the defective position Repair part describing clearly

Appearance

repair request?

Yes

IRIS CODE

Yes

Check the contents of a request

Connect to test device

Fault occurs?

Check the contents of fault request

Yes

Non-recurrent analysis mode

Fault occurs?

Yes

Go to 6 (P2-2) Go to 1 (P2-2) Go to 3 (P2-2)

PFM-500A1WU/500A1WE

Appearance defect?

Yes

Failure analysis

Repair

2-1

From 6 (P2-1)

From 1 (P2-1)

Failure analysis

Repair the defective position

Display test

From 3 (P2-1)

Repair complete?

Yes

Re-install the defective parts (except panel).

Fault recur?

Yes

Change the defective parts again.

Check the CPU/ROM revision No.

Conduct display function test.

Repair

Go to 4 (P2-1)

2-2

Assurance test (running)

Repair complete

END (Shipping)

PFM-500A1WU/500A1WE

START

Test equipment

MAIN-SW ON

Signal generator

SW ON

* A-1 to A-4: See the 3-10 (P3-13)

A-1

Operation OK?

Check the contents of a fault

Appearance check

A-3

Appearance OK?

Yes

COM failure

Power supply AC100V measure

(MAIN-SW IN/OUT)

A-2

AC100V OK?

Yes

Fault of Test device

Repair request

Panel failure

Flexible cable

failure

MAIN-SW OFF

AC power supply correction

treatment execution

ART

Other appearance

defect

Go to P2-4

PFM-500A1WU/500A1WE

Change panel

Lacking parts

Supply, change Repair

TEST

2-3

From P2-3

Protect-cover installation

Fixes to the unit folder

Signal cable is connected with

Logic PC board (CN1)

Special power supply connection

APC function ON Program-key

PUSH “01”

Remote-control SW ON

Analysis A

Fixes to the unit folder

A-4

Screen lighting?

Yes

Evaluation analysis

Go to P2-11

Remote-control SW OFF

Separation of Special power supply

External power supply connection

APC function OFF

Program-key PUSH “01”

Go to P2-5

Signal cable is connected with

Logic PC board (CN1)

Analysis B

2-4

PFM-500A1WU/500A1WE

From P2-4

Vcc ON Vcc is gradually raised, and the voltage is set to 5V.

* B-1 to B-!- : See the 3-10 (P3-13)

B-1

Overcurrent?

Yes

External power supply OFF

Separation of SUS

Go to P2-7

Va is gradually raised, and the voltage is set to 65V.

APC function ON/Vs ON Vs is gradually raised,

and the voltage is set to 180V.

B-6

Overcurrent?

Vcc OFF→ON

B-2

Overcurrent?

Yes

Va ON

B-5

Overcurrent?

Yes

External power supply OFF

Go to P2-6

B-3

Vcc or Va checks?

Yes

B-4

Xsus or Ysus separated?

Yes

External power supply OFF

Separation SUS exchange

Analysis A

Go to P2-4

External power supply OFF

Check the separation of YCOM PC board

B-7

YCOM PC board separated?

Separation of YCOM PC board

PFM-500A1WU/500A1WE

Yes

External power supply OFF

Separation of YCOM PC board

Analysis A

Go to P2-4

Separation of SUS

Go to P2-7

2-5

From P2-5

B-8

YCOM PC board separated?

External power supply OFF

Change panel

Analysis A

Go to P2-4

B-0

Yes

Check display

Screen flicker OK?

B-9

SUS separated?

External power supply OFF

Change the separated

SUS PC board

Yes

Check flicker

Go to P2-9

All white color display check

B-!-

Any data display

Evaluation analysis No display analysis

Go to P2-11

Yes

Go to P2-19

2-6

PFM-500A1WU/500A1WE

* C-1 to C-8 : See the 3-10 (P3-14)

Separation of SUS

From P2-5

Check of connector for XSUS PC board

C-1

Separate the

XSUS PC board?

Yes

XSUS CN49/50 connection

YSUS CN41/42 separation

Analysis B

Go to P2-4

XSUS CN49/50 separation

YSUS PC board connector separation check

C-2

Separate theYSUS

PC board?

Yes

External power supply Vcc ON Vcc is gradually raised,

and the voltage is set to 5V.

C-3

Overcurrent?

Yes

Go to P2-8

Va ON

Va is gradually raised,

and the voltage is set to 65V. C-4

Overcurrent?

Yes

and the voltage is set to 180V.

C-5

External power supply OFF

DC/DC

From P2-8

Vs O

Vs is gradually raised,

Overcurrent?

Yes

External power supply OFF

Change X / YSUS PC board

Change DC/DC Analysis A

Go to P2-4

PFM-500A1WU/500A1WE

2-7

From P2-7

External power supply Vcc OFF

Separation of Logic PC board External power supply Vcc ON

C-6

Overcurrent?

Yes

External power supply Vcc OFF

Separation of LBUS (CN11) External power supply Vcc ON

C-7

Overcurrent?

Yes

External power supply Vcc OFF

Separation of LBUS (CN13) External power supply Vcc ON

External power supply Vcc OFF

Change Logic PC board

Analysis A

Go to P2-4

External power supply Vcc OFF

Change LBUS

Analysis A

C-8

Overcurrent?

Yes

External power supply Vcc OFF

DC/DC

Go to P2-7

2-8

Go to P2-4

External power supply Vcc OFF

Change LBUS

Analysis A

Go to P2-4

PFM-500A1WU/500A1WE

Check flicker

* D-1 to D-9 See the 3-10 (P3-14)

From P2-6

XSUS PC board operation test. Pump output measurement.

Measurements at probe VH27

D-1

Measurement OK?

Measurement at probe VH28

D-2

Measurement OK?

Yes

Measurement at probe VH29

D-3

Measurement OK?

Measure the output at VH27 to VH30. Voltages are within 1.3 V to 1.8 V on the oscilloscope. See the 3-4 for the measuring points.

Yes

Measurement at probe VH30

D-4

Measurement OK?

Y test

Go to P2-10

Yes

External power supply OFF

Change XSUS PC board

Analysis A

Go to P2-4

PFM-500A1WU/500A1WE

2-9

Y test

From P2-9

D-5

D-6

D-7

YSUS PC board operation test Pump output measurement

Measurement at probe VH32

Measurement OK?

Yes

Measurement at probe VH33

Measurement OK?

Yes

Measurement at probe VH34

Measurement OK?

Yes

Measure the output at VH32 to VH35. Voltages are within 1.3 V to 1.8 V on the oscilloscope. See the 3-4 for the measuring points.

D-9

D-8

Measurement at probe VH35

Measurement OK?

Yes

External power supply OFF

DC/DC changed already?

Yes

Change logic PC board

External power supply OFF

Change YSUS PC board

Change DC/DC

Analysis A Go to P2-4

2-10

PFM-500A1WU/500A1WE

* E-1 to E-!-: See the 3-10 (P3-15)

E-3

E-4

Display test

APC OK?

Yes

Display OK?

Evaluation analysis

All white color display check

E-1

Display OK?

Yes

E-2

Measure and set the panel voltage

New panel?

Yes

For the panel voltage measuring procedure, see the 3-11.

From P2-4, 2- 6

Go to P2-12

External power OFF

Shipping process

Go to P2-13

E-5

Change logic PC board

Yes

Logic PC board Changed?

E-6

New LBUS?

External power OFF

Yes

Analysis A

Go to P2-4

Logic PC board changed

E-7

Changed?

Yes

Change DC/DC

Change logic PC boardChange LBUSChange RBUS

PFM-500A1WU/500A1WE

2-11

E-8

From P2-11

Lateral display error?

Yes

Monitor XSUS PC board

E-9

Waveform OK?

Yes

Monitor YSUS PC board

See the 3-2 for the measuring points of DOXE/DOXO. See figure 1 in the 3-1 for the monitored waveform.

External power OFF

E-!-

See the 3-2 for the measuring points of DOYSU/DOYSD/YCOMDV. See figure 2,3 in the 3-1 for the monitored waveform.

E-0

Waveform OK?

Yes

Failure caused by panel error?

Yes

External power OFF

Change panel

Change XSUS PC board

Analysis A

Go to P2-4

SUS Check

Go to P2-18

Separation

Go to P2-15

2-12

Analysis A

Go to P2-4

PFM-500A1WU/500A1WE

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