In the interests of user-safety (Required by safety regulations in some countries) the se t should be restored to its original condition and only parts identical to those specified should be used.
Parts marked with "" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the
servicing guidelines which follow:
WARNING
1. For continued safety, no modification of any circuit should be
attempted.
2. Disconnect AC power before servicing.
CAUTION: FO R C O N T I N U E D PROTECTION
AGAINST A RISK OF FIRE REPLACE ONLY WITH
SAME TYPE FUSE.
F7001 (250V 5A)
BEFORE RETURNING THE RECEIVER (Fire &
Shock Hazard)
Before returning the receiver to the user, perform the following
safety checks:
3. Inspect all lead dress to make certain that leads are not pinched,
and check that hardware is not lodged between the chassis and
other metal parts in the receiver.
4. Inspect all protective devices such as non-metallic control knobs,
insulation materials, cabinet backs, adjustment and compartment
covers or shields, isolation resistor-capacitor networks, mechanical
insulators, etc.
5. To be sure that no shock hazard exists, check for leakage current
in the following manner.
• Plug the AC cord directly into a 120 volt AC outlet.
• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.
• Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.
• Connect the resistor connection to all exposed metal parts having a
return to the chassis (antenna, metal cabinet, screw heads, knobs
and control shafts, escutcheon, etc.) and measure the AC voltage
drop across the resistor.
All checks must be repeated with the AC cord plug connection
reversed. (If necessary, a nonpolarized adaptor plug must be used
only for the purpose of completing these checks.)
Any reading of 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or
more is excessive and indicates a potential shock hazard which
must be corrected before returning the monitor to the owner.
Many electrical and mechanical parts in LCD color television have
special safety-related characteristics.
These characteristics are often not evident from visual inspection, nor
can protection afforded by them be necessarily increased by using
replacement components rated for higher voltage, wattage, etc.
Replacement parts which have these special safety characteristics are
identified in this manual; electrical components having such features
are identified by "" and shaded areas in the Replacement Parts List
and Schematic Diagrams.
For continued protection, replacement parts must be identical to those
used in the original circuit.
The use of a substitute replacement parts which do not have the same
safety characteristics as the factory recommended replacement parts
shown in this service manual, may create shock, fire or other hazards.
Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux
conseils suivants.
A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ
AVERTISSEMENT
1.
N'entreprendre aucune modification de tout circuit. C'est dangereux.
Débrancher le récepteur avant toute réparation.
2.
PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE
F7001 (250V 5A)
•
10 watts en parallèle avec un condensateur de 0.15µF en série
avec toutes les pièces métalliques exposées du coffret et une terre
connue comme une conduite électrique ou une prise de terre
branchée à la terre.
Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour
•
mesurer la chute de tension en travers de la résistance.
Toucher avec la sonde d'essai les pièces métalliques exposées qui
•
présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson,
etc.) et mesurer la chute de tension CA en-travers de la résistance.
Toutes les vérifications doivent être refaites après avoir inversé la
fiche du cordon d'alimentation. (Si nécessaire, une prise
d'adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.)
La tension de pointe mesurèe ne doit pas dépasser 0.75V (correspondante au courant CA de pointe de 0.5mA).
Dans le cas contraire, il y a une possibilité de choc électrique qui
doit être supprimée avant de rendre le récepteur au client.
VERIFICATIONS CONTRE L'INCEN-DIE ET LE
CHOC ELECTRIQUE
Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes.
Inspecter tous les faisceaux de câbles pour s'assurer que les fils
3.
ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.
Inspecter tous les dispositifs de protection comme les boutons de
4.
commande non-métalliques, les isolants, le dos du coffret, les couvercles ou blindages de réglage et de compartiment, les réseaux
de résistancecapacité, les isolateurs mécaniques, etc.
S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la
5.
fuite de courant, de la facon suivante:
Brancher le cordon d'alimentation directem-ent à une prise de cou-
•
rant de 120V. (Ne pas utiliser de transformateur d'isolation pour
cet essai).
De nombreuses pièces, électriques et mécaniques, dans les téléviseur ACL présentent des caractéristiques spéciales relatives à la sécurité, qui ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être nécessairement augmentée en utilisant des
pièces de remplacement étalonnées pour haute tension, puissance,
etc.
Les pièces de remplacement qui présentent ces caractéristiques sont
identifiées dans ce manuel; les pièces électriques qui présentent ces
particularités sont identifiées par la marque "" et hachurées dans la
liste des pièces de remplacement et les diagrammes schématiques.
Pour assurer la protection, ces pièces doivent être identiques à celles
utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas
les mêmes caractéristiques que les pièces recommandées par l'usine,
indiquées dans ce manuel, peut provoquer des électrocutions, incendies, radiations X ou autres accidents.
• “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The
alphabetical character following LF shows the type of lead-free solder.
Example:
Indicates lead-free solder of tin, silver and copper.Indicates lead-free solder of tin, silver and copper.
Using lead-free wire solder
• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 °C, we recommend you to use a dedicated soldering
bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.
Soldering
• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder by 40 °C, and as it has poor
solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be
peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the
steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as
required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
• Be careful when replacing parts with polarity indication on the PWB silk.
LC-60/70LE650U/C6500U/LE657U
NDKEYMF953FM06MAIN Unit
NDUNTKF975FM20LCD CONTROL Unit
NDUNTKF800FM53KEY Unit
NDUNTKG014FM02ICON Unit (LC-60/70LE657U)
NDUNTKG014FM03ICON Unit (LC-60/70LE650U/C6500U)
NDUNTKG015FM03R/C OPC Unit
NRUNTKA936WJQZWi-Fi Unit
NRUNTKB126WJQZBLUETOOTH Unit (LC-60/70LE657U)
NRUNTKB109WJQZPOWER/LED DRIVER Unit (LC-60LE650U/C6500U/LE657U)
NRUNTKB131WJQZPOWER/LED DRIVER Unit (LC-70LE650U/C6500U/LE657U)
LC-60/70LE755U/757U/857U/C7500U
NDKEYMF953FM06MAIN Unit
NDUNTKF961FM19LCD CONTROL UNIT (LC-60LE755U/757U/857U/C7500U)
NDUNTKF961FM20LCD CONTROL UNIT (LC-70LE755U/757U/857U/C7500U)
NDUNTKF800FM53KEY Unit
NDUNTKG014FM02ICON Unit (LC-60/70LE755U/757U/857U)
NDUNTKG014FM03ICON Unit (LC-60/70C7500U)
NDUNTKG015FM03R/C OPC Unit
NRUNTKB116WJQZPOWER/DRIVE Unit (LC-60LE755U/757U/857U/C7500U)
NRUNTKB118WJQZPOWER/DRIVE Unit (LC-70LE755U/757U/857U/C7500U)
NRUNTKA936WJQZWiFi Unit
NRUNTKB126WJQZBLUETOOTH Unit (LC-60/70LE755U/757U/857U)
NOTE: *1 Replace MAIN PWB Units (DKEYMF953FM06) in case of IC3103 and IC3104 failure.
*2 Replace LCD CONTROL Units (DUNTKF975FM20) in case of IC5803 failure.(LC-60/70LE650U/C6500U/LE657U)
OTHER Unit
Ref NO. PARTS CODEDESCRIPTION
NR1JE600D3GV2AZ60" LCD PANEL MODULE Unit (JE600D3GV2AZ) (LC-60LE650U/C6500U/LE657U)
NR1JE695D3GW8CD70" LCD PANEL MODULE Unit (JE695D3GW8CD) (LC-70LE650U/C6500U/LE657U)
NR1JE600D3HD60Z60" LCD PANEL HIRAKI (Open Cell) Unit (LC-60LE755U/757U/857U)
NR1JE695D3HB10Z70" LCD PANEL HIRAKI (Open Cell) Unit (LC-70LE755U/757U/857U)
IC For Exclusive Use Of The Service
Ref No.Parts No.DescriptionQ’ty
IC2004RH-iXD515WJN7QIC (Monitor Microprocessor)1
Service Jigs
Ref No. PARTS CODEDESCRIPTIONQ'ty
NQCNW-C222WJQZConnecting Cord L=1000mm 80pins, LCD Control Unit to LCD Panel Unit, x22
NQCNW-L214WJQZ
NQCNW-F676WJQZConnecting Cord L=1000mm 41pins, Main to LCD Control Unit (LW)1
NQCNW-M539WJQZConnecting Cord L=1000mm 24-24/4pins, Power-Main/LCD Control (PD)1
Connecting Cord L=1000mm 64pins, LCD Control Unit to LCD Panel Unit, x2 (LC-60/70LE755U/
757U/857U)
When fixing the Rear Cabinet, be careful not to catch the backlight LED harness, speaker harness and other harnesses in it.
• The hooks on the external wall of the Rear Cabinet are fitted in the Front Cabinet Ass’y. After putting the Rear Cabinet in place, fit the hooks
securely; then tighten the screws.
(Work method of Rear Cabinet fixation)
Rear Cabinet
(Mat parts)
Front Cabinet Ass'y
(Luster parts)
There is a gap without the fingernail fitting in completely only when covering
with Rear Cabinet.
It becomes the factor of a gap increase of Front Cabinet Ass'y/Rear Cabinet
and the Rear Cabinet misregistration.
[3] The location putting on the heat measure sheet (LC-60/70LE650U/C6500U/LE657U)
1. MAIN PWB Unit
• LC-60LE650U/C6500U/LE657U
• LC-70LE650U/6500U/LE657U
(1) Stick***
PSPAZD031WJKZ
MAIN CPU COOLER
(20 20 7T)
(20*20*7T)
Stick standard
Punch mark
Side View of
MAIN•CPU COOLER
Center
First , please put "PSPAZC805WJKZ" along the standard point.
next , please put "PSPAZC854WJKZ" on the center of "PSPAZC805WJKZ".
( Don't protrude from edge of "PSPAZC805WJKZ".)
[4] Precautions for assembly (LC-60/70LE650U/C6500U/LE657U)
1. Points to be checked and precautions when servicing the unit
Mount the main PWB Ass’y on the backlight chassis and check that the EMI-prevention parts are not peeled and twisted from the access holes. (The
EMI-prevention parts, conductive nonwoven fabric gaskets, must be seen from the access holes.)
[Countermeasure]
Attach the conductive nonwoven fabric gaskets on the shielded case on the main PWB.
• LC-60LE650U/C6500U/LE657U
(1) Prepare***
LANGKD145WJFW
.
PositioningPositioning
Back side
TERMINAL SIDE
Positioning
Stick a conductor seat in the projection part.
Back side
Stick a conductor seat in the projection part .
(2) Stick ***
PSPAZC690WJZZ
CONDUCTR:8x255
(1) Prepare***
LANGKD146WJFW
TERMINAL BOTTOM
(2) Stick ***
PSPAZC691WJZZ
PSPAZC691WJZZ
CONDUCTR:8x180
CONDUCTR:8x180
Positioning
4 – 14
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