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TV
Service Manual
Chassis LA2000
20 LCD 51-7401 TOP
GBC9500
20 LCD 51-7402 TOP
GBD5200
Zusätzlich erforderliche Unterlagen für den Komplettservice Additionally required Service Documents for the Complete Service
Service Manual
Sicherheit Safety
Materialnr./Part No. 720108000001
Materialnummer / Part Number 720100519000 Änderungen vorbehalten / Subject to alteration H-S41 · 0605 http://www.grundig.com
CH AU BR LY GE ON EN SE RN L U TE NA IN R ÜR NTE F R RI NU FO
GRUNDIG Service
Chassis LA2000
Es gelten die Vorschriften und Sicherheitshinweise gemäß dem Service Manual "Sicherheit", Materialnummer 720108000001, sowie zusätzlich die eventuell abweichenden, 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.
Inhaltsverzeichnis
Seite Allgemeiner Teil ................................... 1-2...1-8
Messgeräte .................................................................................. Allgemeine Hinweise .................................................................... Technische Daten ........................................................................ Bedienhinweise ............................................................................ 1-2 1-2 1-3 1-5
Table of Contents
Page General Section .................................... 1-2...1-8
Test Equipment ............................................................................ General Notes .............................................................................. Technical Data ............................................................................. Operating Hints ............................................................................ 1-2 1-2 1-3 1-7
Platinenabbildungen und Schaltpläne ................................... 2-1...2-6
Blockschaltplan ............................................................................ Hauptplatte ................................................................................... Netzteil ..................................................................................... Prozessor ................................................................................. IN/OUT ..................................................................................... Scaler ....................................................................................... Teletext .................................................................................... Audio ........................................................................................ Bedieneinheit, Kopfhöhrerplatte ................................................... 2-1 2-1 2-3 2-3 2-4 2-5 2-5 2-6 2-6
Layout of the PCBs and Circuit Diagrams ........................... 2-1...2-6
Block Circuit Diagram .................................................................. Main Board ................................................................................... Power Supply ........................................................................... Processor ................................................................................. IN/OUT ..................................................................................... Scaler ....................................................................................... Teletext .................................................................................... Audio ........................................................................................ Keybaord, Headphone Board ...................................................... 2-1 2-1 2-3 2-3 2-4 2-5 2-5 2-6 2-6
Ersatzteillisten ...................................... 3-1...3-2
Spare Parts Lists .................................. 3-1...3-2
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, muss die Leitungsverlegung zu den einzelnen Baugruppen beachtet werden. 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. Messwerte und Oszillogramme Bei den in den Schaltplänen und Oszillogrammen angegebenen Messwerten handelt es sich um Näherungswerte!
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 When making measurements on semi-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. Measured Values and Oscillograms The measured values given in the circuit diagrams and oscillograms are approximates!
1-2
GRUNDIG Service
Chassis LA2000
Technische Daten / Technical Data
Order No. EAN Approbations IM-Languages Destination Remote control Color Display Panel 16:9 wide-screen format Panel driving technology Response time Brightness Contrast ratio Viewing angle approx. Physical display resolution max. pixel PICTURE Digital Reference-Plus-Technology (Motion Adaption) Line Flicker Reduction Motion Adaptive Deinterlacing Digital Color Transition Improv. (DCTI) Digital Combfilter Digital Luminance Transition Improv. (DLTI) Picture Noise Reduction (DNR) CCS (Clear Color Screen) Preset picture modes Aspect ratios (Format switching) PIP Multifold Tuner scan (Mosaic Picture) PAT: Split screen (PICTURE + TEXT) PAP: Double Window (PICTURE + PICTURE) P2AT: Double window + TXT POP: PICTURE on PICTURE Picture freezing Zoom with point function Auto 16:9 selection via Scart Sharpness control Blue Background CHASSIS TV-Chassis Progressive Tuner Keyboard 20 LCD 51-7401 TOP G.BC 95-00 40 13833-59873 2 20 LCD 51-7402 TOP G.BD 52-00 40 13833-60061 9
CE,C-TICK,ME67 D,GB,F,I,NL,DK,N,S,E D,A,CH,F,I,E,NL,DK,FIN,N,S RC 200 silver silver/black
20" / 51 cm Clear Color Screen Active Matrix TFT-LC-Display
\
MVA ca. 16ms ca. 600cd/m2 ca. 600:1 120° vertical / 160° horizontal VGA 640 x 480
\ \ \ [ [ \ [ [ \ \ \ \ \ \ \ \ \ \ \ [ \
LA2000
[
PLL frequency synthesizer tuning 7 keys: stand-by, menu, ± for programme, ± for volume, AV-programme (lateral)
1-3
GRUNDIG Service
Chassis LA2000
20 LCD 51-7401 TOP ELECTRONIC Stand by indicator EPG (Electronic Programme Guide) Easy Dialog Megalogic Manual & autom. labeling of prog. Programmable off timer Programmable on timer Intelligent channel search (Zapping funct.) Programme Edit Intelligent Programme Switch Auto switch off Programme memory TV/AV (opt.) Teletext/Fasttext/Toptext Teletext options Childlock Youth free recognition Menu languages OSD SWAP (Recall function) Service mode Hotel mode TUNING Autom. Tuning System with country selection Frequency Based Auto Search Automatic Micro-search Automatic Programming Manual fine tuning Direct channel selection Direct frequency selection PAL/SECAM/BG/DK/I/L'/L NTSC-Playback via Scart (3,58/4,43) PAL M/N, NTSC M Cable TV / Hyperband (S1-S41) AUDIO Mono/Stereo/Nicam AV Stereo Loudspeaker Virtual Dolby Matched Sound Delay (Lip synchronous) Subwoofer Dynamic Bass DSP (Digital Sound Processor) Balance Adjustment AVL (Audio Volume Level) PIP listening via Headphone.jack Equalizer Space Sound Effect Audio mode Audio amplifier without extern LS POWER SUPPLY / CABINET Power voltage Range of regulation Power switch Integrated supply Plug-in AC adaptor Power consumption Cabinet (WxHxD) Weight REAR PANEL CONNECTIONS Euro-AV-Socket AV1 Euro-AV Socket AV2 Euro-AV Socket AV3 S-Video Camera-AV Wireless YUV input / progressive PC-input (Sub D 15) PC-Audio in DVI HDCP HDMI Headphones REAR PANEL CONNECTIONS Audio out Antenna for terrestrial reception DC-connector Power supply plug SUPPLIED ACCESSORIES Remote control (incl. battery) Power cord Cables Instruction manual Circuit diagram Wall fixture integrated
[ \ \ \ [ [ [ \ [ \ \
20 LCD 51-7402 TOP
99 / 6 [/[/[ 10 pages
\ \
6 languages: D, GB, F, I, E, NL
\ [ \ [, full automatic sorting \ \ \ [ \ \ [ [ \ [ [/[/[ [
2 wide band at the front side
\ \ \ \ \ [ \ \ [, 5 Band \
Yes, user, music, cinema, speech 2 x 5 / 3.5W (music/nominal) 230V 100-240V, 50/60Hz, in accordance to IEC 65
\
Yes
\
50W, stand-by < 5W 58,5 x 44 x 7cm (19cm with stand) ca. 10kg CVBS in-/output, Audio in/output , RGB input
\ \
Yes, (Hosiden) Yes, 3x Cinch socket in
\
Yes, via Scart Yes, (Multisync SVGA) Yes, 3,5mm jack Stereo
\ \ \ \ \
1 x Coaxial-socket for TV-tuner-in, according to DIN 45325
\
Power cord plug-in type
[ [ \ [ \ \
1-4
GRUNDIG Service
Bedienhinweise
Dieses Kapitel enthält Auszüge aus der Bedienungsanleitung. Weitergehende Informationen entnehmen Sie bitte der gerätespezifischen Bedienungsanleitung, deren Materialnummer Sie in der entsprechenden Ersatzteilliste finden.
1-5 Chassis LA2000
GRUNDIG Service
Chassis LA2000
1-6
GRUNDIG Service
Operating Hints
This chapter contains excerpts from the operating instructions. For further particulars please refer to the appropriate user instructions the part number of which is indicated in the relevant spare parts list.
1-7 Chassis LA2000
GRUNDIG Service
Chassis LA2000
1-8
GRUNDIG Service
Chassis LA2000
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Blockschaltplan / Block Circuit Diagram
Analog RGB RGB 3 U201 AD9883A VGAHS/VS 2 CVBS TUNER_ON Composite (CVBS) Full SCART CVBS IO Full SCART RGB/FB CVBS SCLK SDAT U101 TW8801 Scaler U202 74VHC14 2 VGAHS/VS CVBS2 RGB 24 FPR/G/B FPVS FPHS FPDE FPCLK PPWR TFT LCD Backlight 24
Tuner CVBS
CVBS1 SC_CVBS
TELE_RGB SC_RGB/FB 4 CVBS0 S-Video S-CHROMA / S-LUMA 2
3 U302 SAA5264 Teletext
SCALER_RESET PC Audio IN PC_SL/PC_SR 2 U402 EEPROM SCLK SDAT 7 U401 MTV230 Processor Keyboard U403 IR-Receiver
Full SCART Audio IN/OUT
SC_SL/SC_SR SC_SLO/SC_SRO
2 2 U601 STV8216
AUDIO_RESET AUDIO_ON
Audio SL/SR Tuner SIF Tuner Mono
2
+12V VCC5T 2 U602 Audio Amp. AMP_OFF U805 +12V HPL/R 2 CN8 Headphone
VCC8 VCC5
+5V
VCC3 U603 U807
AVCC3 VCC3AD
U806 +8V +5V
U802
U801
POWER SUPPLY BOARD
Inverter
Hauptplatte / Main Board
Ansicht von der Bestückungsseite / View of Component Side
2-1
GRUNDIG Service
Chassis LA2000
Hauptplatte / Main Board
Vergrößerte Ansicht von der Bestückungsseite / Larged view of Component Side
2-2
GRUNDIG Service
Chassis LA2000
Hauptplatte Netzteil / Main Board Power Supply
Hauptplatte Prozessor / Main Board Processor
P1.0-7 P3.0-2 P3.4-5 P4.0-7 P5.0-7 RST X1 X2 P0.0-7 P2.0-3 RD WR ALE P0.0-7 P2.0-3 RD WR ALE INT1 OSDHS OSDVS XIN ROUT GOUT BOUT FBKG INT HSYNC VSYNC HBLANK VBLANK ISCL ISDA HSCL HSDA
TO POWER SUPPLY BOARD
XFR
OSD CONTROL
8051 INT1 CORE
AD0-3
ADC
H/VSYNC CONTROL
PWM DAC
DA0-3
DDC & I I C I NTERFACE
MTV230M
15
3 4 1
2
4 3
power on (trigger: +12V)
power on (trigger: +12V)
1
2
3
4
%
2-3
TO KEYBOARD
GRUNDIG Service
Chassis LA2000
Hauptplatte / Main Board IN/OUT
3 4
3
TO TUNER
4
6 5
5 6
RAIN
CLAMP
A/D
8
ROUTA
GAIN
CLAMP
A/D
8
GOUTA
S1 A S2 A S1 B S2 B S1 C S2C S1 D S2D
DA DB DC DD
BAIN
CLAMP
A/D
8
BOUTA MIDSCV DTACK HSOUT VSOUT SOGOUT
HSYNC COAST CLAMP FILT SCL
SYNC PROCESSING AND CLOCK GENERATION
REF SERIAL REGISTER AND POWER MANAGEMENT
REF BYPASS
DECODER/DRIVERS EN IN
SDA A0
AD9883A
2-4
GRUNDIG Service
Chassis LA2000
Hauptplatte / Main Board Scaler
7
$
%
^
11 14 6 10 9 8
15 16 12
power on (trigger: +12V)
13 1 3 4
I2 C-bus, general I/O TV CONTROL AND INTERFACE MICROCONTROLLER (80C51) MEMORY INTERFACE
1
3
ROM
SRAM
DRAM
SAA5264 SAA5265
R G B VDS VSYNC HSYNC
4
6
CVBS
DATA CAPTURE
DISPLAY
CVBS
DATA CAPTURE TIMING
DISPLAY TIMING
Hauptplatte / Main Board Teletext
14 4 3
7
8
9
0
13
12
!
2-5
@
#
TO DISPLAY
GRUNDIG Service
Chassis LA2000
Hauptplatte / Main Board Audio
17
2 19 3 4 18 20
SDO
WS SCK
SCL
BUS0 BUS1
SDA
HPD
IRQ
ST
TO HEADPHONE
VCC IN1 ST-BY 4 TDA7266 3 + -
VCC 13 1
STV82x6
Interrupt Request Stereo Flag
IS Interface IS Interface IC Bus Expander Audio Processing Loudspeaker Audio Processing Sound IF SIF AGC A/D Multi-Standard Digital Stereo Demodulator FM, AM, A2 and NICAM Mono In MONOIN Smart Volume Control, ST WideSurround, 5-band Equalizer and Loudness, Beeper and Subwoofer Output Digital Audio Matrix Audio Stereo D/A Vol./ Bal. Gain
Headphone Detection
OUT1+
7
Demodulation
Low Noise Audio Mute
1Vrms
Loudspeaker LSL LSR SW Subwoofer Headphone HPL HPR
S-GND
9
Vref
+ + -
2
OUT1-
Source Preprocessing
IN2 MUTE
12
15
OUT2+
Headphone Audio Processing Smart Volume Control, Bass/Treble and Beeper
0.5Vrms
Stereo Flag
Audio Stereo D/A
Vol./ Bal.
Low Noise Audio Mute
1Vrms
6
Input SCARTs
AI2L AI2R
2Vrms
Input Analog Audio Matrix
Audio Matrixing
Output Analog Audio Matrix
Low Noise Audio Mute
2Vrms
AO1L AO1R
Low Noise Audio Mute 2Vrms Single Crystal Clock Generation Power Supply Management DC Regulators, Standby mode
2Vrms
AO2L AO2R
AI3L AI3R
power on (trigger: +12V)
2
3
XTI XTO
4
&
*
Output Scarts
AI1L AI1R
2Vrms
Audio Stereo A/D
Audio Stereo D/A
PW-GND
8 +
14
OUT2-
(
)
Bedieneinheit, Kopfhörerplatte / Keyboard, Headphone Board
TO MAIN BOARD TO MAIN BOARD
KEYBOARD
HEADPHONE
2-6
GRUNDIG Service
Chassis LA2000
Ersatzteilliste Spare Parts List 4 / 2005
POS. NR. ABB. POS. NO. FIG. MATERIAL-NR. ANZ. PART NUMBER QTY.
NUR FÜR INTERNEN GEBRAUCH FOR INTERNAL USE ONLY
TV
20 LCD 51-7401 TOP
MATERIAL-NR. / PART NO.: 720126012400 BESTELL-NR. / ORDER NO.: GBC9500 BEZEICHNUNG
d
DESCRIPTION
©
720126012400
20 LCD 51-7401 TOP KEIN E-TEIL GEHAEUSEVORDERTEIL SILBER RUECKWAND SILBER DEKO-RAHMEN VORDERTEIL SILBER FUSS SILBER LAUTSPRECHER LCD-DISPLAY 20" CHI MEI TUNER TCPQ9091 PD27D FERNBEDIENUNG KABEL BEDIENMODUL DATENKABEL (Display) NETZKABEL LP-HAUPTMODUL LP-BEDIENMODUL LP-NETZTEIL LP-IR-MODUL POLSTERSET LCD KARTON POLSTERSET FUSS BEDIENUNGSANLEITUNG D/F/I BEDIENUNGSANLEITUNG GB/NL/E BEDIENUNGSANLEITUNG S/DK/N SERVICE MANUAL D/GB
20 LCD 51-7401 TOP NO SPARE PART FRONT CABINET SILVER BACK COVER SILVER DECO FRAME FRONT SILVER FOOT SILVER LOUDSPEAKER LCD-DISPLAY 20" CHI MEI TUNER TCPQ9091 PD27D REMOTE CONTROL CABLE CONTROLBOARD DATA CABLE (Display) POWER CABLE MAINBOARD CONTROLBOARD POWER SUPPLY IR-BOARD CUSHION SET LCD CARTON CUSHION SET FOOT INSTRUCTION MANUAL D/F/I INSTRUCTION MANUAL GB/NL/E INSTRUCTION MANUAL S/DK/N SERVICE MANUAL D/GB
0001.000 0002.000 0003.000 0005.000 0007.000 0008.000 0019.000 0020.000 0021.000 0022.000 0025.000 0030.000 0060.000 0070.000 0080.000 0090.000 0091.000 0092.000
S
S S
759551144200 759551144100 759551144300 759551144400 759551146500 759551143500 759551146700 720117137100 759551143900 759551144000 759551144800 759551143800 759551143600 759551146600 759551143700 759551144500 759551144600 759551144700 720117106500 720117106600 720117106700 720100519000
Es gelten die Vorschriften und Sicherheitshinweise gemäß dem Service Manual "Sicherheit", Mat.-Nummer 720108000001, sowie zusätzlich die eventuell abweichenden, landesspezifischen Vorschriften!
! (!)
3-1
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.
ÄNDERUNGEN VORBEHALTEN / SUBJECT TO ALTERATION
GRUNDIG Service
Chassis LA2000
Ersatzteilliste Spare Parts List 6 / 2005
POS. NR. ABB. POS. NO. FIG. MATERIAL-NR. ANZ. PART NUMBER QTY.
NUR FÜR INTERNEN GEBRAUCH FOR INTERNAL USE ONLY
TV
20 LCD 51-7402 TOP
MATERIAL-NR. / PART NO.: 720126015600 BESTELL-NR. / ORDER NO.: GBD5200 BEZEICHNUNG
d
DESCRIPTION
©
720126015600
20 LCD 51-7402 TOP KEIN E-TEIL GEHAEUSEVORDERTEIL SILBER RUECKWAND SILBER DEKO-RAHMEN VORDERTEIL SILBER FUSS SILBER LAUTSPRECHER LCD-DISPLAY 20" CHI MEI TUNER TCPQ9091 PD27D FERNBEDIENUNG KABEL BEDIENMODUL DATENKABEL (Display) NETZKABEL LP-HAUPTMODUL LP-BEDIENMODUL LP-NETZTEIL LP-IR-MODUL POLSTERSET LCD KARTON POLSTERSET FUSS BEDIENUNGSANLEITUNG D/F/I BEDIENUNGSANLEITUNG GB/NL/E BEDIENUNGSANLEITUNG S/DK/N SERVICE MANUAL D/GB
20 LCD 51-7402 TOP NO SPARE PART FRONT CABINET SILVER BACK COVER SILVER DECO FRAME FRONT SILVER FOOT SILVER LOUDSPEAKER LCD-DISPLAY 20" CHI MEI TUNER TCPQ9091 PD27D REMOTE CONTROL CABLE CONTROLBOARD DATA CABLE (Display) POWER CABLE MAINBOARD CONTROLBOARD POWER SUPPLY IR-BOARD CUSHION SET LCD CARTON CUSHION SET FOOT INSTRUCTION MANUAL D/F/I INSTRUCTION MANUAL GB/NL/E INSTRUCTION MANUAL S/DK/N SERVICE MANUAL D/GB
0001.000 0002.000 0003.000 0005.000 0007.000 0008.000 0019.000 0020.000 0021.000 0022.000 0025.000 0030.000 0060.000 0070.000 0080.000 0090.000 0091.000 0092.000
S
S S
759551144200 759551144100 759551167300 759551167400 759551146500 759551143500 759551146700 720117137100 759551143900 759551144000 759551144800 759551143800 759551143600 759551146600 759551143700 759551144500 759551144600 759551144700 720117106500 720117106600 720117106700 720100519000
Es gelten die Vorschriften und Sicherheitshinweise gemäß dem Service Manual "Sicherheit", Mat.-Nummer 720108000001, sowie zusätzlich die eventuell abweichenden, landesspezifischen Vorschriften!
! (!)
3-2
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.
ÄNDERUNGEN VORBEHALTEN / SUBJECT TO ALTERATION