Sony LMD-2450W/MC/MD, LMD-2050W Schematic
LCD MONITOR
LMD-2450W
LMD-2450MC
LMD-2450MD
LMD-2050W
SERVICE MANUAL
1st Edition (Revised 2)
! 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.
! A VERTISSEMENT
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.
WARNING
This unit has no power switch.
When installing the unit, incorporate a readily
accessible disconnect device in the fixed wiring, or
connect the power cord to a socket-outlet which must
be provided near the unit and easily accessible, so that
the user can turn off the power in case a fault should
occur.
WARNUNG
Dieses Gerät hat keinen Netzschalter.
Beim Einbau des Geräts ist daher im Festkabel ein
leicht zugänglicher Unterbrecher einzufügen, oder das
ß
Netzkabel mu
befindlichen, leicht zugänglichen Wandsteckdose
verbunden werden, damit sich bei einer
Funktionsstörung die Stromversorgung zum Gerät
jederzeit unterbrechen lä
mit einer in der Nähe des Geräts
ß
t.
LMD-2450W
Table of Contents
Manual Structure
Purpose of this manual ................................................................. 3
Related manuals ........................................................................... 3
1. Service Overview
1-1. Appearance Figure ..........................................................1-1
1-2. Board Location ...............................................................1-1
1-3. Disassembly ....................................................................1-2
1-3-1. Rear Cover.............................................................1-2
1-3-2. Q Board .................................................................1-3
1-3-3. Connector Plate Assembly/T Board ......................1-4
1-3-4. G1 Board (LMD-2050W/2450W)/G2 Board ........1-5
1-3-5. B Board .................................................................1-6
1-3-6. Inverter Board (LMD-2050W) ..............................1-7
1-3-7. HB1 Board/HB2 Board/X Board
(LMD-2050W) ......................................................1-8
1-3-8. HA1 Board/HA2 Board/X Board
(LMD-2450W/2450MD/2450MC) .......................1-9
1-3-9. G3 Board/S Board
(LMD-2450W/2450MD/2450MC) .....................1-11
1-3-10. DC Fan (LMD-2450W/2450MD/2450MC) ........1-12
1-3-11. Speaker (LMD-2050W/2450W) .........................1-13
1-3-12. LCD Panel ...........................................................1-14
1-3-13. G1 Board (LMD-2450MD/2450MC)..................1-15
1-4. Unleaded Solder............................................................1-16
1-5. Warning on Power Connection..................................... 1-16
3. Troubleshooting
3-1. Backlight does not light ..................................................3-1
3-2. System does not start ......................................................3-2
3-3. Control operation of this unit is abnormal ......................3-2
3-4. Image is abnormal...........................................................3-3
3-5. TALLY lamp is not lit ....................................................3-3
3-6. Fan is abnormal (LMD-2450W/2450MD/2450MC) ......3-4
4. Spare Parts
4-1. Notes on Repair Parts .....................................................4-1
4-2. Exploded Views.............................................................. 4-2
4-3. Packing Materials & Supplied Accessories ..................4-18
5. Block Diagrams
6. Frame Wiring
2. Electrical Alignments
2-1. Preparation ......................................................................2-1
2-2. White Balance Adjustment .............................................2-1
2-3. A/D Adjustment (COMPONENT) .................................2-2
2-4. A/D Adjustment (RGB) ..................................................2-2
2-5. A/D Adjustment (COMPOSITE) ...................................2-3
2-6. A/D Adjustment (Y/C) ...................................................2-3
2-7. A/D Adjustment (COMPUTER) ....................................2-4
LMD-2450W
1
Purpose of this manual
Related manuals
Manual Structure
This manual is the Service Manual of the LCD Monitor LMD-2450W/2450MC/
2450MD/2050W.
This manual contains the service overview, electrical alignments, troubleshooting,
spare parts, block diagrams, and frame wiring.
The service of this unit is basically performed by the replacement of board.
Therefore, the schematic diagram, board layout and electrical parts list are not
contained.
In addition to this Service Manual the following manual is provided.
..
. “Instruction Manual” PRINT/CD-ROM (Supplied with this unit)
..
Part No.: 3-100-040-XX (LMD-2450W/2050W) PRINT
3-100-041-0X (LMD-2450W/2050W) CD-ROM
3-113-888-1X (LMD-2450MC) PRINT
3-113-888-XX (LMD-2450MD) PRINT
3-113-889-0X (LMD-2450MD) CD-ROM
This manual describes the information (basic function and use of this unit)
required for the operation of this unit.
..
. “Semiconductor Pin Assignments” CD-ROM (Available on request)
..
This “Semiconductor Pin Assignments” CD-ROM allows you to search for
semiconductors used in Broadcast and Professional equipment.
Part number: 9-968-546-06
LMD-2450W
3
1-1. Appearance Figure
LMD-2050W/LMD-2450W LMD-2450MD/2450MC
Section 1
Service Overview
1-2. Board Location
LMD-2050W
LMD-2450W/2450MD/2450MC
G1 board
(LMD-2450MD/2450MC)
X board
G1 board
HB1 board
G1 board
(LMD-2450W)
G2 board
X board
T board
Q board
G2 board
T board
HB2 board
Inverter board
B board
HA2 board
LMD-2450W
HA1 board
B board
S board
G3 board
Q board
1-1
1-3. Disassembly
m
. In this section, remove parts in the order of numbers shown in the figure.
. When removing/installing the cabinet and replacing the board, place the unit on the conductive cushion.
1-3-1. Rear Cover
LMD-2050W/2450W
1 Top arm cover
2 Four screws
(B4 x 12)
4 Four screws
6 Screw covers
(B4 x 12)
7 Four screws
(BVTP 4 x 8)
!= Rear cover
!- Three hooks
8 Four hooks
3 Stand
5 Hinge assembly
!/ Four hooks
9 Three hooks
LMD-2450MD/2450MC
Cushion
1-2
LMD-2450W
1-3-2. Q Board
3
. Remove the rear cover. (Refer to Section 1-3-1.)
The illustration indicates LMD-2050W.
Two harnesses
J10
J14
1 Four screws
(PWH3 x 6)
2 Q board
Cushion
LMD-2450W
1-3
1-3-3. Connector Plate Assembly/T Board
. Remove the rear cover. (Refer to Section 1-3-1.)
. Remove the Q board. (Refer to Section 1-3-2.)
LMD-2450W/2450MD/2450MC
2 Wall mount
bracket
LMD-2050W
1 Five screws
(PWH3 x 6)
LMD-2450MD/2450MC
6 Connector plate
assembly
3 Harness
2 Wall mount
bracket
9 Three screws
(PWH3 x 6)
!/ T board
LMD-2050W/2450W
6 Connector plate
assembly
3 Three
harnesses
1 Four screws
(PWH3 x 6)
7 Four screws
(PWH3 x 6)
8 Option case
5 Nine screws
(PWH3 x 6)
4 Six connector screws
1-4
G2 board
CN751
CN602
CN601
G1 board
CN752
G2 board
Cushion
LMD-2450W
1-3-4. G1 Board (LMD-2050W/2450W)/G2 Board
. Refer to Section 1-3-13 for how to remove the G1 board of LMD-2450MD/2450MC.
The G2 board is removed in common.
. Remove the rear cover. (Refer to Section 1-3-1.)
. Remove the Q board. (Refer to Section 1-3-2.)
. Remove the connector plate assembly and option case. (Refer to Section 1-3-3.)
3 Four screws
(PWH3 x 6)
5 G1 board
4 Board holder
1 Harness
7 Board holder
6 Four screws
(PWH3 x 6)
2 Three harnesses
8 G2 board
Cushion
LMD-2450W
1-5
1-3-5. B Board
. Remove the rear cover. (Refer to Section 1-3-1.)
. Remove the Q board. (Refer to Section 1-3-2.)
. Remove the connector plate assembly and option case. (Refer to Section 1-3-3.)
The illustration indicates LMD-2050W.
1 Six screws
(PWH3 x 6)
2 Main case
4 Five harnesses
6 Five screws
(PWH3 x 6)
3 Two harnesses
LVDS cable
5 Two harnesses
7 B board
1-6
Cushion
LMD-2450W
1-3-6. Inverter Board (LMD-2050W)
. Remove the rear cover. (Refer to Section 1-3-1.)
. Remove the Q board. (Refer to Section 1-3-2.)
. Remove the connector plate assembly and option case. (Refer to Section 1-3-3.)
. Remove the B board. (Refer to Section 1-3-5.)
2 Inverter cover
1 Four screws
(PWH3 x 6)
3 Four screws
(PWH3 x 6)
4 Inverter board
5 Harness
Cushion
6 Four harnesses
LMD-2450W
1-7
1-3-7. HB1 Board/HB2 Board/X Board (LMD-2050W)
. Remove the rear cover. (Refer to Section 1-3-1.)
7 Main frame assembly
1 Fourteen screws
(PWH M3 x 8)
A
8 Two screws
(PWH3 x 6)
!= Keypad
(R)
2 Two screws
(PWH3 x 6)
4 Harness
!/ Ground plate (R)
!- HB1 board
6 Harness
!] X board
!' Ground plate (L)
1-3-8. HA1 Board/HA2 Board/X Board (LMD-2450W/2450MD/2450MC)
. Remove the rear cover. (Refer to Section 1-3-1.)
LMD-2450W
7 Main frame assembly
4 Harness
8 Two screws
(PWH3 x 6)
!= Keypad
(R)
2 Two screws
(PWH3 x 6)
1 Fourteen screws
(PWH M3 x 8)
0 Ground plate (R)
!- HA1 board
6 Harness
!. Keypad (L)
!' Ground
plate (L)
![ Screw
(PWH3 x 6)
A
!\ Two screws
(PWH3 x 6)
5 Harness
!, HA2 board
A
!; Six hooks
3 Three screws
(PWH3 x 6)
LMD-2450W
!] X board
Cushion
9 Six hooks
1-9
LMD-2450MD/2450MC
7 Main frame assembly
9 Two screws
(PWH3 x 6)
![ Keypad (R)
2 Two screws
(PWH3 x 6)
1 Fourteen screws
(PWH M3 x 8)
C
4 Harness
C
!= HA1 board
!\ X board
6 Harness
!] Screw
(PWH3 x 6)
D
8 Protection plate
!; Two screws
(PWH3 x 6)
5 Harness
!. HA2 board
@/ Keypad (L)
D
3 Three screws
(PWH3 x 6)
1-10
!- Ground plate (R)
0 Six hooks
!, Ground plate (L)
!' Six hooks
Cushion
LMD-2450W
1-3-9. G3 Board/S Board (LMD-2450W/2450MD/2450MC)
. Remove the rear cover. (Refer to Section 1-3-1.)
The illustration indicates LMD-2450W.
3 Two screws
(PWH3 x 6)
2 Three harnesses
5 S board
1 Two harnesses
4 G3 board
LMD-2450W
Cushion
1-11
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