GRUNDIG Service Chassis BL (LX prime IDTV)
1 - 2
Table of Contents Page
General Section.................................. 1-2…1-26
General Notes ...............................................................................1-2
Note to Starting Up for Sets with "Zero Standby"
Toronto 37/42.................................................................................1-3
Product and DisplayVariants.........................................................1-3
Technical Data...............................................................................1-4
Operating Hints............................................................................1-16
Service and Special Functions....................................................1-23
Layout of the PCBs
and Circuit Diagrams ......................... 2-1…2-52
Main Board XLB190R-3XLB190R-3.................................................................2-1
– Version XLB190R-6 ...................................................................2-9
– Version XLB190R-11 ...............................................................2-17
– Power Supply ..........................................................................2-25
– VGA Socket..............................................................................2-27
– HDMI Sockets..........................................................................2-28
– AV Sockets...............................................................................2-29
– Scart Sockets...........................................................................2-30
– Tuner........................................................................................2-31
– COFDM Demodulator..............................................................2-32
– Amplifier...................................................................................2-33
– Scaler.......................................................................................2-34
IDTV Board XLC192XLC192....................................................................2-37
– Power Supply...........................................................................2-40
– MPEG Decoder & CPU............................................................2-40
– Common Interface...................................................................2-42
Overview......................................................................................2-43
Power Supply Board XLA194-03/-05XLA194-03/-05...........................................2-44
IR Receiver XBP192....................................................................2-49
Keyboards XGA191, XGE191, XGJ191, Z7K191XGA191, XGE191, XGJ191, Z7K191XGE191, XGJ191, Z7K191, Z7K191........................2-49
Soft Touch Keyboard YCL192......................................................2-50
Zero StandbyYCL191 .................................................................2-51
Socket Boards XFA197, XGA193XFA197, XGA193XGA193................................................2-51
Head Phone Board 8R9198 ........................................................2-52
Spare Parts Lists................................ 3-1…3-17
Inhaltsverzeichnis Seite
Allgemeiner Teil .................................. 1-2…1-26
Allgemeine Hinweise.....................................................................1-2
Hinweis zur Inbetriebnahme der Geräte mit "Zero Standby"
Toronto 37/42.................................................................................1-3
Geräte- und Display-Varianten......................................................1-3
Technische Daten..........................................................................1-4
Bedienhinweise ...........................................................................1-10
Service- und Sonderfunktionen...................................................1-23
Platinenabbildungen
und Schaltpläne.................................. 2-1…2-52
Hauptplatte XLB190R-3.................................................................2-1
– Version XLB190R-6 ...................................................................2-9
– Version XLB190R-11 ...............................................................2-17
– Netzteil ....................................................................................2-25
– VGA-Buchse............................................................................2-27
– HDMI-Buchsen ........................................................................2-28
– AV-Buchsen.............................................................................2-29
– Scart-Buchsen.........................................................................2-30
– Tuner........................................................................................2-31
– COFDM Demodulator..............................................................2-32
– Verstärker.................................................................................2-33
– Scaler.......................................................................................2-34
IDTV-Platte XLC192 ....................................................................2-37
– Netzteil.....................................................................................2-40
– MPEG Decoder & CPU............................................................2-40
– Common Interface...................................................................2-42
Übersicht .....................................................................................2-43
Netzteil-Platte XLA194-03/-05.....................................................2-44
IR-EmpfängerYBP192 ................................................................2-49
Keyboards XGA191, XGE191, XGJ191, Z7K191........................2-49
Soft Touch Keyboard YCL192......................................................2-50
Zero StandbyYCL191 .................................................................2-51
Buchsen-Platten XFA197, XGA193.............................................2-51
Kopfhörer-Platte 8R9198.............................................................2-52
Ersatzteillisten.................................... 3-1…3-17
Es gelten dieVorschriften und Sicherheitshinweise ge-
mäßdemServiceManual"Sicherheit",Materialnummer
720108000001, sowie zusätzlich die eventuell abwei-
chenden, landesspezifischen Vorschriften!
The regulations and safety instructions shall be valid
as provided by the "Safety" Service Manual, part
number 720108000001, as well as the respective
national deviations.
General Section
General Notes
Before opening the cabinet disconnect the mains plug!
Attention: Observe the ESD safety regulations
Wiring
Before disconnecting any leads and especially the earth connecting
leads observe the way they are routed to the individual assemblies.
On completion of the repairs the leads must be laid out as originally
fitted at the factory to avoid later failures or disturbances.
Carrying out Measurements
Whenmakingmeasurementsonsemi-conductorswithanoscilloscope,
ensure that the test probe is set to 10:1 dividing factor. If the previous
measurement was made on AC input, please note that the coupling
capacitor in the oscilloscope will be charged. Discharge via the item
being checked can damage the components.
MeasuredValues and Oscillograms
The measured values given in the circuit diagrams and oscillograms
are approximates!
Change of the Main Board
After changing the main board all settings in the service mode must
be done according to the table "Basic Settings" (point 1 in chapter
"Service and Special Functions" on page 1-23).
AllgemeinerTeil
Allgemeine Hinweise
Vor dem Öffnen des Gehäuses den Netzstecker ziehen!
Achtung: ESD-Vorschriften beachten
Leitungsverlegung
BevorSiedieLeitungenundinsbesonderedieMasseleitungenlösen,ist
die Leitungsverlegung zu den einzelnen Baugruppen zu beachten.
NacherfolgterReparaturistesnotwendig,dieLeitungsführungwieder
in den werkseitigen Zustand zu versetzen um evtl. spätere Ausfälle
oder Störungen zu vermeiden.
Durchführen von Messungen
Bei Messungen mit dem Oszilloskop an Halbleitern sollten Sie nur
Tastköpfemit10:1-Teilerverwenden.Außerdemistzubeachten,dass
nach vorheriger Messung mit AC-Kopplung der Koppelkondensator
desOszilloskopsaufgeladenseinkann.DurchdieEntladungüberdas
Messobjekt können Bauteile beschädigt werden.
Messwerte und Oszillogramme
Bei den in den Schaltplänen und Oszillogrammen angegebenen
Messwerten handelt es sich um Näherungswerte!
Austausch der Hauptplatte
NachAustauschderHauptplattemüssenalleEinstellungenimService
ModenachTabelle "Grundeinstellwerte" (Punkt 1 im Kapitel "Service-
und Sonderfunktionen" auf Seite 1-23) eingestellt werden.