Sony FWD-50PX1 (English: pgs. 52-97) User manual

FLAT WIDE DISPLAY
FWD-50PX1
FWD-50PX1N
SERVICE MANUAL
1st Edition
FLAT PANEL DISPLAY SPEAKER SYSTEM
SS-SP50FW
TV STAND
SU-50FW

FWD-50PX1
!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.
Power cord plug should be pulled out from the wall before starting the service operation.
If power switch is turned OFF only, you may receive an electric shock, because the unit may have an
electric inside.
Therefore, you should pull out the power cord plug from the wall before starting the service operation.

FWD-50PX1
Vorsicht!
Explosionsgefahr bei unsachgemäßem Austausch
der Batterie.
Ersatz nur durch denselben oder einen vom
Hersteller empfohlenen ähnlichen Typ. Entsorgung
gebrauchter Batterien nach Angaben des
Herstellers.
ATTENTION
Il y a danger d’explosion s’il y a remplacement
incorrect de la batterie.
Remplacer uniquement avec une batterie du même
type ou d’un type équivalent recommandépar le
constructeur.
Mettre au rebut les batteries usagées conformément
aux instructions du fabricant.
ADVARSEL!
Lithiumbatteri-Eksplosionsfare ved fejlagtig
håndtering.
Udskiftning måkun ske med batteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
ADVARSEL
Lithiumbatteri - Eksplosjonsfare.
Ved utskifting benyttes kun batteri som
anbefalt av apparatfabrikanten.
Brukt batteri returneres
apparatleverandøren.
VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en likvärdig typ
som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt gällande
föreskrifter.
VAROITUS
Paristo voi räjähtää jos se on virheellisesti
asennettu.
Vaihda paristo ainoastaan laitevalmistajan
suosittelemaan tyyppiin.
Hävitäkäytetty paristo valmistajan ohjeiden
mukaisesti.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according to the
manufacturer’s instructions.
1 (P)

FWD-50PX1
For the customers in the Netherlands
Voor de klanten in Nederland
Hoe u de batterijen moet verwijderen, leest u in de tekst
van deze handleiding.
Gooi de batterij niet weg maar lever deze in als klein
chemisch afval (KCA).
Für Kunden in Deutschland
Entsorgungshinweis: Bitte werfen Sie nur entladene
Batterien in die Sammelboxen beim Handel oder den
Kommunen. Entladen sind Batterien in der Regel dann,
wenn das Gerät abschaltet und signalisiert “Batterie
leer”oder nach längerer Gebrauchsdauer der Batterien
“nicht mehr einwandfrei funktioniert”. Um
sicherzugehen, kleben Sie die Batteriepole z.B. mit
einem Klebestreifen ab oder geben Sie die Batterien
einzeln in einen Plastikbeutel.
For the customers in the U.S.A. and Canada
RECYCLING LITHIUM-ION BATTERIES
Lithium-Ion batteries are recyclable.
You can help preserve our environment
by returning your used rechargeable
batteries to the collection and recycling
location nearest you.
For more information regarding recycling of re-
chargeable batteries, call toll free
1-800-822-8837, or visit http://www.rbrc.org/
Caution: Do not handle damaged or leaking Lithium-Ion
batteries.
2 (P)

1
FWD-50PX1
Table of Contents
1. Service Overview
1-1. Board Location............................................................................................1-1
1-2. Installing/Removing the Cabinet.................................................................1-2
1-2-1. Rear Cover Assembly ................................................................1-2
1-2-2. Bezel Assembly..........................................................................1-3
1-3. Replacing the Board ....................................................................................1-4
1-3-1. Q Board ......................................................................................1-4
1-3-2. B Board ......................................................................................1-5
1-3-3. SP Board.....................................................................................1-6
1-3-4. S Board .......................................................................................1-6
1-3-5. Y Drive Board ............................................................................1-7
1-3-6. X Drive Board ............................................................................1-8
1-3-7. Digital Video Board/Interface Board .........................................1-8
1-4. Replacing the Main Parts ............................................................................1-9
1-4-1. Power Unit/DC Fan (For Power Supply) ...................................1-9
1-4-2. DC Fan (For Q/B Mount).........................................................1-10
1-4-3. Plasma Display Panel ...............................................................1-11
1-5. Service Position.........................................................................................1-12
1-5-1. Service Position of the B and Q Boards...................................1-12
1-6. Packaging of the Plasma Display Panel When It Is Shipped to
Pioneer Corporation ..................................................................................1-13
1-7. Backup Battery Replacement ....................................................................1-14
1-8. Unleaded Solder ........................................................................................1-14
1-9. Warning on Power Connection .................................................................1-14
2. Electrical Adjustments
2-1. Equipment Required....................................................................................2-1
2-2. Electrical Adjustments Using the Service Mode ........................................2-1
2-3. White Balance Adjustment .......................................................................2-20
2-4. AD Calibration Adjustment ......................................................................2-20
2-5. Sub Color and Sub Hue Adjustments........................................................2-21
2-6. Video Decoder Adjustment.......................................................................2-21
2-7. Watch Error Adjustment ...........................................................................2-22
3. Troubleshooting
3-1. Judging Method When Image Does Not Appear ........................................3-1
3-2. Self Diagnosis Function ..............................................................................3-2
3-2-1. Overview ....................................................................................3-2
3-2-2. Abnormality Judgment Criterion ...............................................3-2

2FWD-50PX1
4. Circuit Description
4-1. Outline.........................................................................................................4-1
4-2. Q Board .......................................................................................................4-1
4-3. B Board .......................................................................................................4-2
4-4. S Board........................................................................................................4-2
5. Semiconductors
6. Spare Parts
6-1. Notes on Repair Parts..................................................................................6-1
6-2. Exploded Views ..........................................................................................6-2
6-3. Electrical Parts List .....................................................................................6-8
6-4. Packing Materials & Supplied Accessories ..............................................6-24
6-5. SS-SP50FW...............................................................................................6-24
7. Block Diagrams
B (1/3), Q (1/2), SP .....................................................................................7-1
B (2/3) .........................................................................................................7-2
B (3/3), Q (2/2), H1, H2, S..........................................................................7-3
8. Schematic Diagrams
B ..................................................................................................................8-2
H1, H2, SP.................................................................................................8-14
Q ................................................................................................................8-15
S.................................................................................................................8-20
U1 (FWD-50PX1) .....................................................................................8-21
Frame Wiring ............................................................................................8-22
9. Board Layouts
B ..................................................................................................................9-2
Q ..................................................................................................................9-4
H1 ................................................................................................................9-6
H2 ................................................................................................................9-6
S...................................................................................................................9-6
SP ................................................................................................................9-6
U1 (FWD-50PX1) .......................................................................................9-7

1-1
FWD-50PX1
Section 1
Service Overview
S boards
H2 board
Y drive board
Q board U1 board
(
FWD-50PX1
)
H1 board
B board
SP board
Interface board
Digital video board
X drive boardS board
Power unit board
1-1. Board Location

1-2 FWD-50PX1
PSW
M6 x20
PSW
3 x20
PSW3 x8
PSW3 x8
Conductive cushion
Handle
Nylon washer
Knob
Handle
Handle
Rear cover assembly
Handle
U1 block
assembly
(FWD-50PX1)
Panel securing
screws
1-2. Installing/Removing the Cabinet
n
When installing/removing the cabinet and replacing the board, place the unit on the conductive cushion.
1-2-1. Rear Cover Assembly
1. Loosen the two panel securing screws, then remove the U1 block assembly. (FWD-50PX1 only)
2. Remove the four screws (PSW M6 x20), then remove the four nylon washers and four knobs.
3. Remove the fourteen screws (PSW3 x20) and eight screws (PSW3 x8), then remove the rear cover
assembly while holding the handle.
4. Attach the rear cover assembly in the reverse order of steps 1 to 3.

1-3
FWD-50PX1
BVTP
4 x 16
BVTP
3 x 8
BVTP
3 x 8
BVTP
3 x 8
BVTP4 x 16
BVTP4 x 16
Portions A
Portions A
Chassis assembly Main bracket
Main bracket
Control button
H2 board
Harness
Harness
Conductive
cushion
Bezel assembly
Light tube H1 board
Control button panel
1-2-2. Bezel Assembly
m
.Be sure to remove the chassis assembly with more than two persons.
.Place the removed chassis assembly on the conductive cushion.
1. Remove the rear cover assembly. (Refer to Section 1-2-1.)
2. Remove the two screws (BVTP3 x8), then remove the control button panel.
3. Disconnect the harness from the connector on the H2 board.
4. Remove the three screws (BVTP3 x8), then remove the control button and H2 board.
5. Remove the screw (BVTP3 x8), then remove the light tube and H1 board.
6. Disconnect the harness from the connector on the H1 board.
7. Remove the twenty-six screws (BVTP4 x16).
8. Remove the chassis assembly while holding the portions A of the main bracket.
9. Attach the bezel assembly in the reverse order of steps 1 to 8.

1-4 FWD-50PX1
1-3. Replacing the Board
1-3-1. Q Board
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Remove the bolt, cushion (15x25), and two screws
(PSW3 x8), then remove the Q/B shield cover.
3. Remove the two screws (PSW3 x6), three screws
(PSW3 x8) (black) and six hexagonal screws, then
remove the Q terminal plate.
4. Move the Q terminal plate slowly in the direction shown
by the arrow, then remove it from the copper foil tape.
5. Remove the two UL tapes, then disconnect the seven
harnesses and the flexible flat cable connected to the Q
board.
6. Remove the six screws, then remove the Q board and
partition Q.
PSW
3 x 6
PSW
3 x 6
PSW
3 x 6
PSW
3 x 8
(black)
M8 x 16
CN3007 CN3005CN3008
CN3012
CN3011
CN3001
CN3006
CN3002
Q board
Conductive
cushion
Q board
Hexagonal
screw
Q terminal
plate
Harnesses
Partition Q
UL tapes
Copper foil tape
Q/B shield cover
Flexible flat
cable
Cushion
(15x25)
CN3003
7. Install the Q board in the reverse order of steps 1 to 6.
n
Place and fix the harnesses to connect the Q board and
B board as shown in the illustration.
B board
Q board
Harnesses
UL tapes

1-5
FWD-50PX1
PSW
3 x 6
CN7002
Lithium battery
(CR1220)
B board
B board
Harnesses
Harnesses
Flexible flat
cable
Conductive
cushion UL tapes
Battery
holder
CN1004
CN1005
CN1001
CN101 CN401
CN402
CN7001
1-3-2. B Board
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Remove the Q/B shield cover.
(Refer to step 2 of Section 1-3-1.)
3. Remove the two UL tapes, then disconnect the eight
harnesses and the flexible flat cable connected to the B
board.
4. Remove the six screws, then remove the B board.
5. Remove the lithium battery from the battery holder on
the B board.
6. Install the B board in the reverse order of steps 1 to 5.
n
Place and fix the harnesses to connect the Q board and
B board as shown in the illustration.
B board
Q board
Harnesses
UL tapes

1-6 FWD-50PX1
BVTP
3 x 8
Harness
SP board
1-3-3. SP Board
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Remove the harness from the SP board.
3. Remove the two screws, then remove the SP board.
4. Install the SP board in the reverse order of steps 1 to 3.
PSW
3 x 6
PSW
3 x 6
PSW
3 x 6
Harness Harness
Harness
S board
S board
S board
Conductive cushion
1-3-4. S Board
n
The three S boards are installed in this unit. When
replacing them, remove/install in the same procedure.
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Disconnect the harness from the S board.
3. Remove the screw, then remove the S board.
4. Install the S board in the reverse order of steps 1 to 3.

1-7
FWD-50PX1
PSW
3 x6
PSW
3 x 6PSW
3 x 6
M8 x 16
Connectors Clamper
Clampers Clampers
QB block
assembly
Connector
Connector
Side frame
Board cover
assembly
PSW
3 x 6Option case bracket
assembly
Flexible flat cable
Harness
Connectors
Conductive
cushion
Scan B board
Scan A board
Board holders Board
holders
Y drive board
Screw
[A]
Screw
[B]
Screw
[C]
1-3-5. Y Drive Board
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Remove the five connectors.
3. Remove the harness from the eight clampers.
4. Remove the bolt (M8 x 16) and four screws (PSW3 x
6), then remove the QB block assembly in the
direction shown by the arrow.
5. Remove the three screws (PSW3 x6), then remove
the side frame and board cover assembly.
6. Remove the four screws, then remove the option case
bracket assembly.
7. Disconnect the harness and flexible flat cable from the
connectors on the Y drive board.
8. Remove the two connectors from the scan A board and
scan B board.
9. Remove the two screws [B], six screws [A], five
screws [C] and four board holders, then remove the Y
drive board.
10. Install the Y drive board in the reverse order of steps 1
to 9.

1-8 FWD-50PX1
Screw [A]Screw [B]
Screw [C]
X drive board
Board holders
Board holders
Conductive cushion
1-3-6. X Drive Board
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Disconnect the harness and flexible flat cable from the
connectors on the X drive board.
3. Remove the two screws [A], six screws [C], five
screws [B] and four board holders, then remove the X
drive board.
4. Install the X drive board in the reverse order of steps 1
to 3.
Flexible flat cable Flexible flat cable
Flexible flat cables
Flexible flat
cables
Digital video
board
Harnesses
Harness
Board holders
Board holdersBoard holders
Interface board
Harnesses
1-3-7. Digital Video Board/Interface Board
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Remove the QB block assembly.
3. Remove the power unit.
(Refer to steps 2 and 3 of Section 1-4-1.)
4. Disconnect all harnesses and flexible flat cables from
the connectors on the digital board.
5. Remove the six board holders, then remove the digital
video board.
6. Disconnect all harnesses and flexible flat cables from
the connectors on the interface board.
7. Remove the six board holders, then remove the
interface board.
8. Install the digital video board and interface board in
the reverse order of steps 1 to 7.

1-9
FWD-50PX1
PSW
3 x 6
M8 x 16
QB block assembly
Connectors [B]
Harness
Connectors [A]
Connector [B]
Conductive
cushion
Harness Harnesses
SP board
Interface board
Imprinting
PSW
4 x 25
PSW
3 x 6
PSW
3 x 6
BVTT
3 x 8
PSW
4 x 35
Imprinting
Power unit
DC fan
DC fan
DC fan
Purse
locks
G bracket
Conductive cushion
K board bracket
assembly
Purse lock
1-4. Replacing the Main Parts
1-4-1. Power Unit/DC Fan (For Power Supply)
n
When attaching the DC fan, make sure that the orientation
of imprinting is correct.
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Disconnect the nine harnesses from the connectors on
the power unit.
3. Remove the bolt (M8 x16) and four screws (PSW3 x
6), then remove the QB block assembly.
4. Remove the four connectors [A].
5. Remove the three connectors [B].
6. Disconnect the three harnesses from the connectors on
the interface board.
7. Disconnect the harness from the connector on the SP
board.
8. Remove the harness from the four purse locks.
9. Remove the four screws, then remove the K board
bracket assembly.
10. Remove the four screws (BVTT3 x6), then remove
the G bracket.
11. Remove the two screws (PSW4 x25), then remove
the DC fan.
12. Remove the four screws (PSW4 x35), then remove
the two DC fans.
13. Remove the seven screws, then remove the power unit.
14. Attach the power unit and DC fan in the reverse order
of steps 1 to 13.

1-10 FWD-50PX1
PSW
4 x 25
Imprinting
Conductive cushion
DC fan Connector
1-4-2. DC Fan (For Q/B Mount)
n
When attaching the DC fan, make sure that the orientation
of imprinting is correct.
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Remove the connector and two screws, then remove
the DC fan.
3. Attach the DC fan in the reverse order of steps 1 and 2.

1-11
FWD-50PX1
M8 x16
(Right side as viewed from backside)
M8 x16
PSW3 x6
PSW3 x6
PSW3 x6
PSW
3 x6
Main brackets Cushion
(15x25)
Frame (H)
Side frame
Side frame
Plasma display panel
Conductive cushion
Frame (H)
1-4-3. Plasma Display Panel
n
Be sure to replace the plasma display panel with two persons.
1. Remove the rear cover assembly. (Refer to Section 1-2-1.)
2. Remove the bezel assembly. (Refer to Section 1-2-2.)
3. Remove the QB block assembly. (Refer to Section 1-4-1.)
4. Remove the S board. (Refer to Section 1-3-4.)
5. Remove the Y drive board. (Refer to Section 1-3-5.)
6. Remove the X drive board. (Refer to Section 1-3-6.)
7. Remove the digital video board and interface board. (Refer to Section 1-3-7.)
8. Remove the power unit. (Refer to 1-4-1.)
9. Remove the cushions (15x25) attached to the heads of the three bolts on the right side as viewed
from backside.
10. Remove the five bolts (M8 x16), then remove the two main brackets.
11. Remove the four screws (PSW3 x8), then remove the two frames (H).
12. Remove the six screws (PSW3 x8), then remove the two side frames.
13. Attach the plasma display panel in the reverse order of steps 1 to 12.

1-12 FWD-50PX1
1-5. Service Position
1-5-1. Service Position of the B and Q Boards
m
.Be sure to attach the stand with more than two persons.
.When attach the stand to the unit, check that four knobs are attached to the holes of the stand.
1. Remove the rear cover assembly. (Refer to Section 1-2-1.)
2. Remove the two cushions (15x25) attached to the two screws.
3. Remove the bolt (M8 x16) and two screws, then remove the QB shield assembly.
4. Attach the four knobs to the unit by the four screws.
5. Attach the four knobs to the holes of the each stand.
Unit
Unit
Stands
Stands
Bolt
(M8 x16)
PSW
M6 x20
PSW
M6 x20 PSW
3 x6
Q board
Knobs
Knobs
Q/B shield
cover
B board
Unit
Cushion
(15x25)
Atacch the two knobs
to the each stand.

1-13
FWD-50PX1
1-6. Packaging of the Plasma Display Panel When It Is Shipped to Pioneer Corporation
PP bands
Carton (Upper)
Pad R (Upper)
Pad L (Upper)
Pad L (Under)
Pad R (Under)
Carton (Under) POSITIONING
SCREWS
Individual inner case
FRONT LID
SERVICE
MODULE Individual inner case
Screws (12 pcs)

1-14 FWD-50PX1
1-7. Backup Battery Replacement
The B board contain the lithium battery for the clock.
c
When replacing the part, be sure to use the specified one
below.
Replacement with a part other than the specified part will
result in fire hazards and electric hazards.
Replacement part
Part description: Lithium battery (CR1220)
Part No.: !1-756-157-11
Replacement
1. For removing the lithium battery, refer to steps 1 to 5
in Section 1-5-3.
2. Attach the lithium battery in the reverse order of steps.
1-8. Unleaded Solder
Boards requiring use of unleaded solder are printed with a
lead free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come
printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
m
.Be sure to use the unleaded solder for the printed circuit
board printed with the lead free mark.
.The unleaded solder melts at a temperature about 40 dC
higher than the ordinary solder, therefore, it is recom-
mended to use the soldering iron having a temperature
regulator.
.The ordinary soldering iron can be used but the iron tip
has to be applied to the solder joint for a slightly longer
time. The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful.
1-9. Warning on Power Connection
Use the proper power cord for your local power supply.
FWD-50PX1
United States, Continental United Kingdom, Ireland, Japan
Canada Europe Australia, New Zealand
Plug type VM0233 COX-07 636 _a) VM1296
Female end VM0089 COX-02 VM0310B VM0303B VM1313
Cord type SVT H05VV-F CEE (13) 53rd (O.C) HVCTF
Minimum cord set rating 10A/125V 10A/250V 10A/250V 10A/125V
Safety approval UL/CSA VDE VDE DENAN-HO
a) Note : Use an appropriate rating plug which is applied to local regulations.