Sony SS-SP50FW User manual

SERVICE MANUAL
1st Edition
FLAT PANEL DISPLAY
FWD-50PX2
FLAT PANEL DISPLAY SPEAKER SYSTEM
SS-SP50FW
TV STAND
SU-50FW

FWD-50PX2
!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-50PX2
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-50PX2
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-50PX2
Table of Contents
1. Service Overview
1-1. Appearance Figure ..........................................................1-1
1-2. Board Location ...............................................................1-1
1-3. Disassembly ....................................................................1-2
1-3-1. Rear Cabinet Assembly .........................................1-2
1-3-2. Bezel Assembly/H1 Board/H2 Board ...................1-3
1-3-3. A Board/L Board/I Board......................................1-4
1-3-4. G Board/TEMP Board...........................................1-5
1-3-5. T Board..................................................................1-5
1-3-6. A Block Assembly/DC Fan ...................................1-6
1-3-7. YDT Board/YDB Board........................................1-7
1-3-8. Y SUS Board .........................................................1-8
1-3-9. CTRL Board ..........................................................1-8
1-3-10. Z SUS Board .........................................................1-9
1-3-11. XL Board/XC Board/XR Board ..........................1-10
1-3-12. Plasma Display Panel ..........................................1-11
1-4. Service Position ............................................................1-12
1-4-1. Service Position of A Board ................................1-12
1-5. Packing of the Plasma Display Panel ...........................1-13
1-6. Label Information of Module .......................................1-14
1-6-1. Identification Label .............................................1-14
1-6-2. Warning Label (High Voltage) ...........................1-14
1-6-3. Warning Label (Hot Surface) ..............................1-14
1-6-4. Caution Label (Mechanical Hazard) ...................1-15
1-6-5. Safety Approval Label ........................................1-15
1-6-6. Serial No. of Frame .............................................1-15
1-6-7. Voltage Label ......................................................1-15
1-7. Warning on Power Connection.....................................1-16
1-8. Unleaded Solder............................................................1-16
2. Service Mode and Adjustment
2-1. Service Mode ..................................................................2-1
2-1-1. Service Mode Startup Procedure ...........................2-1
2-1-2. Configuration ........................................................2-1
2-1-3. Description of Main Items.....................................2-2
2-2. White Balance Adjustment .............................................2-3
2-2-1. Initialization ..........................................................2-3
2-2-2. AD Calibration ......................................................2-3
2-2-3. 1PC Signal.............................................................2-3
2-2-4. White Balance .......................................................2-3
2-3. Va/Vs Voltage Adjustment.............................................2-4
2-3-1. Required Equipment..............................................2-4
2-3-2. Va Voltage Adjustment .........................................2-4
2-3-3. Vs Voltage Adjustment .........................................2-4
2-4. After Replacing the Y SUS Board..................................2-5
2-4-1. Vsc/_Vy Volatge Adjustment...............................2-5
2-5. Flash Down-loading Method ..........................................2-6
2-6. DEVICEINFO Section ...................................................2-6
3. Troubleshooting
3-1. Self Diagnosis Operation ................................................3-1
3-2. Check Point.....................................................................3-1
3-2-1. A Board .................................................................3-1
3-3. Summary of Troubleshooting Guide ..............................3-2
3-4. Image Trouble.................................................................3-3
3-5. Power (G Board) Trouble ...............................................3-4
3-6. Other Trouble..................................................................3-5
3-7. Remote Control Trouble .................................................3-6
3-8. Sound Trouble ................................................................3-6
4. Spare Parts
4-1. Notes on Repair Parts .....................................................4-1
4-2. Exploded Views ..............................................................4-2
5. Block Diagram
Overall ............................................................................5-1

1-1
FWD-50PX2
Section 1
Service Overview
1-1. Appearance Figure
1-2. Board Location
123
456
789
0
ON SET OFF
H2 board
H1 board
YDB board
YDT board
Y SUS board
Z SUS board
XR board
XC board
T board
A board
CTRL board
XL board
L board
I board
TEMP board
TEMP board
TEMP board

1-2 FWD-50PX2
1-3. Disassembly
n
When removing/installing the cabinet and replacing the board, place the unit on the conductive cushion.
1-3-1. Rear Cabinet Assembly
Conductive cushion
4BKM-FW10
3Panel securing screws
1Side cover
2Bottom cover
1Side cover
7Eighteen screws
8Fifteen screws
9Hold the four handles and remove
the rear cabinet assembly.
0Rear cabinet assembly
Upper side
5Four screws
6Four knobs

1-3
FWD-50PX2
1-3-2. Bezel Assembly/H1 Board/H2 Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
m
.When removing the chassis assembly, be sure to work with more than two persons.
.When removing the chassis assembly, hold the four portions A and remove it from
the module frame assembly.
.Place the removed chassis assembly on the conductive cushion.
Conductive cushion
1Four screws
6Two screws
8Three screws
!- Nine screws
2Eight screws
!] Two screws
Arm
!= Front frame
assembly
5Chassis assembly
![ Filter glass
!\ H1 board
!; Bezel assembly
3Harness
Arm
Upper side
7Control button bracket
!/ Control button
9H2 board
4Harness
Portions A
Portions A

1-4 FWD-50PX2
1-3-3. A Board/L Board/I Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
Conductive cushion
Upper side
3Five screws
7Five screws
9Five screws
6Six connector screws
4Cover
1Screw
2L board
5I board
8Interface cover
!- Removing the lithium battery.
CN501
CN22
CN3
CN19
CN24
CN23
CN29
CN9
CN8
CN15
CN1
P1
P3
!/ A board
!/ A board
Remove the lithium battery in the direction
of the arrow.
Lithium battery
(CR-1220)
Battery holder

1-5
FWD-50PX2
1-3-4. G Board/TEMP Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
1-3-5. T Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
Upper side
Conductive cushion
1Five screws
3Nine screws
5Two screws
5Screw
CN806
CN805
CN804
CN803
CN801
CN802 CN800 P501
P501
P501
4G board
6TEMP board
6TEMP board
6TEMP board
2Shield
Conductive cushion
Upper side
CN802
1Two screws
2T board

1-6 FWD-50PX2
1-3-6. A Block Assembly/DC Fan
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the G board. (Refer to Section 1-3-4.)
DC fan (large) installation direction
Make sure that the label is
oriented in the upward direction
of the main unit.
DC fan (small) installation direction
Make sure that the label is
oriented in the upward direction
of the main unit.
Upper side
Conductive cushion
5Two screws
9Six screws
3Two screws
7Six screws
![ Four screws !- Four screws
1Two screws
2A block assembly
4Fan bracket (large)
8Fan bracket
(large)
!= Fan bracket (small)
6DC fan (large)
!/ DC fan (large) !] DC fan (small)
CN23
CN24

1-7
FWD-50PX2
1-3-7. YDT Board/YDB Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the G board. (Refer to Section 1-3-4.)
Upper side
4Six screws
2Four screws
1Two screws
3Speaker bracket
support
3Speaker bracket support
7Harness
P1
P101
P2
P3
P4 P5
P6
P7 P8
P102
P103 P104
P105P106
P107
Conductive cushion
5YDT board
6YDB board

1-8 FWD-50PX2
1-3-8. Y SUS Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the bezel assembly. (Refer to Section 1-3-2.)
.Remove the YDT board and YDB board. (Refer to Section 1-3-7.)
1-3-9. CTRL Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the bezel assembly. (Refer to Section 1-3-2.)
.Remove the A block assembly. (Refer to Section 1-3-6.)
Upper side 5Six screws
1Four screws
3Six screws
P11
P1
P6
P5
P4
P2
P3
4Y SUS board 2Arm
6Three board brackets
Conductive cushion
1Four screws
P2
P300 P200
P105 P106
P107
P3
Upper side
Conductive cushion
4CTRL board
2Cushion retainer
3Cushion

1-9
FWD-50PX2
1-3-10. Z SUS Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the bezel assembly. (Refer to Section 1-3-2.)
.Remove the A block assembly. (Refer to Section 1-3-6.)
1Two screws
P153
P152
P3
P2
P1
P151
P4
5Z SUS board 3Speaker brackets
2Z SUS cover
4Six screws

1-10 FWD-50PX2
1-3-11. XL Board/XC Board/XR Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the bezel assembly. (Refer to Section 1-3-2.)
.Remove the G board. (Refer to Section 1-3-4.)
.Remove the A block assembly. (Refer to Section 1-3-6.)
1Four screws
1Four screws
P308
P307
P306
P305
P304
P303
P302
P301
P208
P207
P206
P205
P204
P203
P202
P107
P106
P105
P104
P103
P102
P101
P110
P100
P210
P200
P300
P310
8XR board
7XC board
4Flexible
retainers
2Two frame modules
6XL board
3Sixteen screws
5Five screws
Conductive cushion
Upper side

1-11
FWD-50PX2
1-3-12. Plasma Display Panel
.Remove each part. (Refer to Sections 1-3-1 to 1-3-11.)
Conductive cushion
1Plasma display panel

1-12 FWD-50PX2
1-4. Service Position
1-4-1. Service Position of A Board
m
.When attaching this unit to the stands, be sure to work with two persons.
.After attaching this unit to the stands, make sure that the knobs are securely inserted into the holes of
the stands.
.When assembling the service position, be sure to repair after removing the rear cabinet.
Insert the four knobs into
the holes of stands.
Unit
Stands
1Knobs
Stands
A board
2Four screws
(PSW3 x10)
Unit
Unit
1Knobs

1-13
FWD-50PX2
1-5. Packing of the Plasma Display Panel
6Protection plate for
outer box
6Protection plate for
outer box
Rear
1PDP module
2Cushion (upper)
2Cushion (upper)
3Cushion (lower)
3Cushion (lower)
4Inner box (upper)
7
Outer box (upper)
5Inner box (lower)
Front
8Outer box (lower)
9Palette

1-14 FWD-50PX2
1 5 762, 3, 4
504K250X3000065.AKLGG 12
MODEL : POPSOX30000
LG Electronics Inc. Date 2005.04 Made in Korea
7 cm
2.5 cm
1-6. Label Information of Module
1Identification label
2Warning label (High voltage)
3Warning label (Hot surface)
4Caution Label (Mechanical Hazard)
5Safety approval label
6Serial No. of frame
7Voltage label
1-6-1. Identification Label
.Model Name
.Bar Code (Contains the manufacture No.)
.Manufacture No.
.The trade name of LG Electronics
.Manufactured date (Year & Month)
.The place Origin
.Mode Suffix
1-6-2. Warning Label (High Voltage)
1-6-3. Warning Label (Hot Surface)
6 cm
1.8 cm
WARNING
HAZARD VOLTAGE.
DO NOT TOUCH ELECTRIC POINT.
HIGH
VOLTAGE
!
6 cm
1.8 cm
WARNING
HOT PART CAN BE BURN.
DO NOT TOUCH ELECTRIC PART.
HOT
SURFACE
!