Sony FWD-42PX2 User manual

FLAT PANEL DISPLAY
FWD-42PX2
REMOTE COMMANDER
RM-980
SPEAKER SYSTEM
SS-SP42FW
SERVICE MANUAL
1st Edition

FWD-42PX2
!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.

FWD-42PX2
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)
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.

1
FWD-42PX2
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-R Board/T-L Board............................................1-5
1-3-6. A Block Assembly/DC Fan ...................................1-6
1-3-7. Y-DRV Board/Y-SUS Board ................................1-7
1-3-8. CTRL Board ..........................................................1-8
1-3-9. Z-SUS Board .........................................................1-8
1-3-10. XL Board/XR Board .............................................1-9
1-3-11. Plasma Display Panel ..........................................1-10
1-4. Service Position ............................................................1-11
1-4-1. Service Position of A Board ................................1-11
1-5. Packing of the Plasma Display Panel ...........................1-12
1-6. Label Information of Module .......................................1-13
1-6-1. Warning/Caution Label .......................................1-13
1-6-2. Voltage Label ......................................................1-14
1-6-3. Identification Label .............................................1-14
1-6-4. Safety Approval Label ........................................1-14
1-6-5. Serial No. of Frame Label ...................................1-14
1-7. Warning on Power Connection.....................................1-15
1-8. Unleaded Solder............................................................1-15
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. Vs Voltage Adjustment .........................................2-4
2-3-3. Va Voltage Adjustment .........................................2-4
2-4. Vsc/_Vy Voltage Adjustment ........................................2-5
2-4-1. Required Equipment..............................................2-5
2-4-2. Vsc Voltage Adjustment .......................................2-5
2-4-3. _Vy Voltage Adjustment ......................................2-5
2-5. Flash Down-loading Method ..........................................2-6
2-6. DEVICEINFO Section ...................................................2-7
3. Troubleshooting
3-1. Self Diagnosis Operation ................................................3-1
3-2. Check Point.....................................................................3-1
3-2-1. A Board .................................................................3-1
3-2-2. Plasma Display Panel ............................................3-2
3-3. Image Trouble.................................................................3-3
3-4. Power (G Board) Trouble ...............................................3-4
3-5. Remote Control Trouble .................................................3-5
3-6. Sound Trouble ................................................................3-5
3-7. Other Trouble..................................................................3-6
3-8. Plasma Display Panel .....................................................3-7
3-8-1. Image is not displayed...........................................3-7
3-8-2. Vertical Image is abnormal ...................................3-8
3-8-3. Horizontal Image is abnormal ...............................3-9
3-8-4. Mal Discharge .......................................................3-9
4. Spare Parts
4-1. Notes on Repair Parts .....................................................4-1
4-2. Exploded Views ..............................................................4-2
5. Block Diagram
5-1. Circuit Description..........................................................5-1

1-1
FWD-42PX2
Section 1
Service Overview
1-1. Appearance Figure
1-2. Board Location
123
456
789
0
ON SET OFF
H2 board
H1 board
Y-DRV board
Y-SUS board
Z-SUS board
T-L board
XR board
A board
CTRL board
XL board
T-R board
BKM-FW10
G board
L board
I board
TEMP board TEMP board
TEMP board

1-2 FWD-42PX2
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
2BKM-FW10
1Two panel securing
screws
3Four screws
5Fourteen screws
6Fourteen screws
4Four knobs
7
Hold the two handles and
remove the rear cabinet assembly.
8Rear cabinet assembly
Upper side

1-3
FWD-42PX2
1-3-2. Bezel Assembly/H1 Board/H2 Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
Portions A
Portions A
m
.When removing the chassis assembly, be sure to work with more than two persons.
.When removing the chassis assembly, hold the four portionsA and remove it from
the front frame assembly.
.Place the removed chassis assembly on the conductive cushion.
2Two screws
4Three screws
3Control button
bracket
6Control button
3H2 board
Conductive cushion
1Four screws
8Ten screws
!] Two screws
Arm
![ Front frame
assembly
9Chassis assembly
!\ H1 board
!- Bezel assembly
0Harness
Arm
Upper side
CN3
7Four screws
!= Filter glass

1-4 FWD-42PX2
1-3-3. A Board/L Board/I Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
Upper side
1Four screws
8Four screws
3Four screws
Conductive cushion
CN501
CN22
P1
P1
P3
CN3
CN19
CN23 CN29 CN1
CN24
CN9
CN15
CN8
5Six connector screws
4Two screws
9A board
6Screw
2L board
!/ I board
9A board
7Interface cover
CN20
!= Removing the lithium battery.
Remove the lithium battery in the
direction of the arrow.
Lithium battery
(CR-2032)
Battery holder

1-5
FWD-42PX2
1-3-4. G Board/TEMP Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
1-3-5. T-R Board/T-L Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
Upper side
Conductive cushion
P501
P501
6TEMP boards
5Two screws
1Eight screws
CN807
CN801
CN802 CN800
CN803
CN804
CN805
CN8
2G board 3Screw
P501
4TEMP board
Upper side
1Three screws
5Screw
6Screw
8Two screws
3Two screws
2AC outlet cover CN1304
CN1302
4T-R board
9T-L board
7Option shield plate
Conductive cushion

1-6 FWD-42PX2
1-3-6. A Block Assembly/DC Fan
.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.)
Upper side
DC fan installation direction
DC fan installation direction
Make sure that the label is
oriented in the upward
direction of the main unit.
Make sure that the label is oriented in the
upward direction of the main unit.
DC fan installation direction
Make sure that the label is
oriented in the upward
direction of the main unit.
1Five screws
!\ Screw
7Screw
9Two
screws
!- Six screws
!' Two screws
![ Six screws
2Screw
4A block assembly
3Round type
connector
!; Fan bracket
!= Fan brackets
!, DC fan
!] DC fans
0DC fan
5CN23
Conductive cushion
8Fan bracket
6CN24

1-7
FWD-42PX2
1-3-7. Y-DRV Board/Y-SUS Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the bezel assembly. (Refer to Section 1-3-2.)
1Two screws
5Three screws
2Speaker bracket
support
P2
P11
P4
P9
P1P2 P3P4 P5 P6 P7 P8
Upper side
Conductive cushion
7Y-DRV board
8Y-SUS board
P1
P152
P8
6Six screws
3Two screws
4Speaker bracket
support

1-8 FWD-42PX2
1-3-8. 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.)
P4
P5
1Five screws
P1
Upper side
Conductive cushion
2Z-SUS board
P6
P2
1Four screws
P11
P10
Upper side
Conductive cushion
4CTRL board
2Cushion retainer
3Cushion
4CTRL board P4
P6
P7
1-3-9. Z-SUS Board
.Remove the rear cabinet assembly. (Refer to Section 1-3-1.)
.Remove the bezel assembly. (Refer to Section 1-3-2.)

1-9
FWD-42PX2
4Six screws
1Four screws
6Six screws
P10 P11
P208
P207
P206
P205
P204
P203
P202
P201
P108
P107
P106
P105
P104
P103
P102
P101
Upper side
Conductive cushion
9XR board
5Flexible retainer
2Two frame modules
7XL board
8Five screws
P110
P210
3Seven
screws
1-3-10. XL 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 A block assembly. (Refer to Section 1-3-6.)

1-10 FWD-42PX2
1-3-11. Plasma Display Panel
.Remove each part. (Refer to Sections 1-3-1 to 1-3-10.)
3Two screws
1Screw
7Four screws
4AC socket
support
8Speaker bracket
supports
2Bracket
6Bracket
5Screw
!= Plasma
display
panel
9Five covers
!/ Five screws
!- G board bracket
Upper side
Conductive cushion

1-11
FWD-42PX2
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
1Knobs
Stands
A board
2Four screws
Unit
Unit

1-12 FWD-42PX2
1-5. Packing of the Plasma Display Panel
Front
1PDP module
7Outer box
8Lid of outer box
3Inner box (front)
2Protection plate for inner box
4Inner box (rear)
2Protection plate
for inner box
5Protection plate for outer box
5Protection plate
for outer box
6Palette
Rear

1-13
FWD-42PX2
2 3 1 4 5
WARNING
HAZARD VOLTAGE.
DO NOT TOUCH ELECTRIC POINT.
HIGH
VOLTAGE
!
WARNING
HOT PART CAN BE BURN.
DO NOT TOUCH ELECTRIC PART.
HOT
SURFACE
!
CAUTION
MECHANICAL HAZARD.
DO NOT TOUCH POINTED PART.
WOUND
!
18.5 cm
123
2.1 cm
1-6. Label Information of Module
1Warning/Caution label
2Voltage label
3Identification label
4Safety approval label
5Serial No. of frame
1-6-1. Warning/Caution Label
1Warning (High Voltage)
2Warning (Hot Surface)
3Caution (Mechanical Hazard)

1-14 FWD-42PX2
7 cm
2.5 cm
MODEL : PDP42X3####
All Voltage : DC(=) 5.2V
Va : 60V Vs : 186V
150 / -200 / 120 / N.A / 100
Max Watt : 330W(Full White)
512K343X3001108.AKLGG CC
MODEL : PDP42X30000
LG Electronics Inc. Date 2005.12 Made in Korea
7 cm
2.5 cm
7.5 cm
2.5 cm
MODEL=PDP42X3####
Rating
Total Max Watt:340W
Max Volt(=):5.25V/65Va/195Vs
Max Amps:4.5A/2.0A/1.5A
LG Electronics Inc.
1-6-5. Serial No. of Frame Label1-6-2. Voltage Label
1-6-3. 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
1-6-4. Safety Approval Label
.Model Name
.Max. Watt (Full White)
.Max. Volts
.Max. Amps
.The Trade Name of LG Electronics
.TUV Approval Mark
.UL Approval Mark
.UL Approval No.
7 cm
2.5 cm
W4205C014819
P/N : 3315Q-H034A
LG Electronics Inc.