
GRUNDIG Service Chassis KT
1 - 2
Table of Contents Page
General Section .................................. 1-2…1-86
General Notes ...............................................................................1-2
Special Functions ..........................................................................1-3
Product and Display Variants.........................................................1-4
Service Hints .................................................................................1-4
Technical Data...............................................................................1-6
Operating Hints............................................................................1-62
Service and Special Functions ....................................................1-80
Layout of the PCBs
and Circuit Diagrams ......................... 2-1…2-45
Chassis Board VKT190R-2 ...........................................................2-1
– Block Circuit Diagram ................................................................2-9
– Power Supply...........................................................................2-10
– HDMI........................................................................................2-11
– SCART, SPDIF ........................................................................2-12
– VGA, YUV ................................................................................2-12
– USB .........................................................................................2-13
– Tuner / DVB-T2 ........................................................................2-13
– DVB-S......................................................................................2-14
– Multi Tuner ...............................................................................2-15
– PCMCIA Interface....................................................................2-16
– Scaler SOC / LAN....................................................................2-17
– FLASH .....................................................................................2-19
– RAM.........................................................................................2-20
– FRC .........................................................................................2-21
– LVDS........................................................................................2-22
– Keyboard..................................................................................2-22
– Amplifier...................................................................................2-23
UHD Board ZJA192R-2...............................................................2-24
– Power Supply...........................................................................2-27
– HDMI........................................................................................2-29
– LVDS........................................................................................2-31
– Scaler.......................................................................................2-32
– RAM.........................................................................................2-32
Power Supply DPS-106AP 1A / DPS-120AP 2A.........................2-35
Power Supply DPS-126BP A / DPS-136BP A.............................2-39
Dockiing Boards ..........................................................................2-43
IR/LED Boards.............................................................................2-45
Spare Parts Lists ................................ 3-1…3-30
Inhaltsverzeichnis Seite
Allgemeiner Teil .................................. 1-2…1-86
Allgemeine Hinweise .....................................................................1-2
Spezial-Funktionen........................................................................1-3
Geräte- und Display-Varianten ......................................................1-4
Servicehinweise ............................................................................1-4
Technische Daten..........................................................................1-6
Bedienhinweise ...........................................................................1-44
Service- und Sonderfunktionen ...................................................1-80
Platinenabbildungen
und Schaltpläne.................................. 2-1…2-45
Chassisplatte VKT190R-2 .............................................................2-1
– Blockschaltplan..........................................................................2-9
– Netzteil.....................................................................................2-10
– HDMI........................................................................................2-11
– SCART, SPDIF ........................................................................2-12
– VGA, YUV ................................................................................2-12
– USB .........................................................................................2-13
– Tuner / DVB-T2 ........................................................................2-13
– DVB-S......................................................................................2-14
– Multi-Tuner...............................................................................2-15
– PCMCIA-Interface....................................................................2-16
– Scaler-SOC / LAN....................................................................2-17
– FLASH .....................................................................................2-19
– RAM.........................................................................................2-20
– FRC .........................................................................................2-21
– LVDS........................................................................................2-22
– Keyboard..................................................................................2-22
– Verstärker.................................................................................2-23
UHD-Modul ZJA192R-2...............................................................2-24
– Netzteil.....................................................................................2-27
– HDMI........................................................................................2-29
– LVDS........................................................................................2-31
– Scaler.......................................................................................2-32
– RAM.........................................................................................2-32
Netzteil DPS-106AP 1A / DPS-120AP 2A...................................2-35
Netzteil DPS-126BP A / DPS-136BP A.......................................2-39
Docking-Platten ...........................................................................2-43
IR/LED-Platten.............................................................................2-45
Ersatzteillisten .................................... 3-1…3-30
Es gelten die Vorschriften und Sicherheitshinweise
gemäß dem Service Manual "Sicherheit", Material-
nummer 720108000001, sowie zusätzlich die even-
tuellabweichenden, landesspezifischenVorschriften!
Theregulations andsafetyinstructions shallbe 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-conductors with an oscilloscope,
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.
Allgemeiner Teil
Allgemeine Hinweise
Vor dem Öffnen des Gehäuses den Netzstecker ziehen!
Achtung: ESD-Vorschriften beachten
Leitungsverlegung
Bevor Sie die Leitungen und insbesondere die Masseleitungen lösen,
ist die Leitungsverlegung zu den einzelnen Baugruppen zu beachten.
Nach erfolgter Reparatur ist es notwendig, die Leitungsführung wieder
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
Tastköpfe mit 10:1 - Teiler verwenden.Außerdem ist zu beachten, dass
nach vorheriger Messung mit AC-Kopplung der Koppelkondensator
des Oszilloskops aufgeladen sein kann.Durch die Entladung über das
Messobjekt können Bauteile beschädigt werden.