ELENBERG LTV-1521 - ESpecmonitor.espec.ws/files/ltv-1521_395.pdf11 1117-3.3V BCD SOT223 N804,N8062...
Transcript of ELENBERG LTV-1521 - ESpecmonitor.espec.ws/files/ltv-1521_395.pdf11 1117-3.3V BCD SOT223 N804,N8062...
ELENBERG LTV-1521
Part (Код ЗЧД=Номер ЗЧД)
1 CABINET FRONT 1 360325412 SPEAKER 23 FUNCTIONAL KNOB 1 360325094 BRACKET 1 370098175 SHIELD BOX 1 370098326 INTEFACE BOARD 1 370098147 CABINET BACK 1 360293688 CONNECTION BOARD 1 370068039 ROTATE COVER 1 36022512
10 BASE 1 3603250811 BASE BOARD 1 3603251012 SCREEN 113 LENS 1 3603250614 BRACKET(LEFT) 1 3700981915 BRACKET(RIGHT) 1 37009830
REMOTE HANDSET KK-Y298AC POWER JSI-150206(LF)- 34003794TUNER AFT1/3100 32001259SPEAKER YDT6090N-6rc(8Ω/4W) 29001071TOUCH SWITCH KFC-A06-L4-4.5×6.5-4.3B 23000611IR REMOTE CONTROL RECEIVER 21000391SMD ZENERDIODE BZV55-C/8V2-PHILIPS 16002081FUSE 20N-020H/L-2A/250V 2700122715"L.C.D SVA150XG04TB 31003232MAIN BOARD 090*KLC-1521QS-2-01/00/A 35009717KEY BOARD 090*LC-TM1509S01/00/A 35009707REMOTE CONTROL RECEIVER BOARD 35009433 REMOTE CONTRO BOARD 090*Y27401/01-T/A 35009435FRONT CABINET200*KLC1521US10/102P 36032541BACK CABINET 202*KLC1521US10/102P 36032505MODEL PLATE 412*KLC-1521QS10/02-KONKA 36033736*FUNCTION BUTTON 291*KLC1521US10/101D 36032509*POLYFOAM L 300*KLC1521US10/00 39018938*POLYFOAM R 300*KLC1521US20/00 39018943*PACKINGBAG310*080080/034R-800X800X0.025 39011083*CARTON BOX 510*KLC-1521QS10/03 39020551*MANUAL570*KLC-1521QS/02-ENGLISH 39020552SOCKET 21 SCART CS-2110VEP 25002363VGA SOCKETDP-001-01EP 25002364*STEREO JACK CKX-035-114C-01EP 25002362
Spare Parts List (LTV -1521)
DescriptionItem QTY
IMPORTANT SERVICE SAFETY INFORMATION
Operating the receiver outside of its cabinet or with its back removed involves a shock hazard. Work on these models should only be performed by those who are thoroughly familiar with precautions necessary when working on high voltage equipment.
Exercise care when servicing this chassis with power applied. if carelessly contacted, can cause serious shock or result in damage to the chassis. Maintain interconnecting ground lead connections between chassis, escutcheon, picture tube dag and tuner when operating chassis.
When it is necessary to make measurements or tests with AC power applied to the receiver chassis, an Isolation Transformer must be used as a safety precaution and to prevent possible damage to transistors. The Isolation Transformer should be connected between the TV line cord plug and the AC power outlet.
It is important to maintain specified values of all components and anywhere else in the received that could cause a rise in operating supply voltages. No changes should be made to the original design of the receiver.
Components shown in the shaded areas on the schematic diagram and/or identified by in the replacement parts list should be replaced only with exact factory recommended replacement parts. The use of unauthorized substitute parts man creates may create shock, fire, or other hazards.
Before returning the receiver to the user, perform the following safety checks: 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis
and other metal parts in the receiver. 2. Replace all protective devices such as non-metallic control knobs, insulating fish papers, cabinet backs, adjustment
and compartment covers of shields, isolation resistor-capacitor networks, mechanical insulators etc. 3. To be sure that not shock hazard exists, a check for the presence of leakage current should be made at each exposed
metal part having a return path to the chassis (antenna, cabinet metal, screw heads knobs and/or shafts, escutcheon, etc.) in the following manner.
Plug the AC line cord directly into a 110V/220V/240V, AC receptacle. (Do not use an Isolation Transformer during these checks.) All checks must be repeated with the AC line cord plug connection reversed. (If necessary, a non-polarized adapter plug must be used only for the purpose of completing these checks.)
PLEASE READ BEFORE ATTEMPTING SERVICE 1. Use an Isolation Transformer when performing any service on this chassis. 2. Never disconnect any leads while receiver is in operation. 3. Disconnect all power before attempting any repairs. 4. Do not short any position of the circuit while the power is on. 5. For safety reasons, replace components any with identical replacement parts (SEE PARTS LIST). 6. Before alignment, warm up the TV for at least 30 minutes. 7. When removing a PCB or related component, after unfastening or changing a wire, be sure to put the
wire back in its original position. 8. Inferior silicon grease can damage IC's and transistors. When replacing IC's and transistors, use only
specified silicon grease. Remove all old silicon when applying new silicon. 9. Before removing the anode cap, discharge eletricity because it contains high voltage.
A. SPECIFICATION
System : PAL- D/K,I,B/G;SECAM-L/L’,B/G,D/K Channel : 45.25MHz~855.25MHz IF Frenquency Video: 38.9MHz
Chroma: 34.47MHz Sound: 32.4 MHz(DK) 33.4MHz(BG) 32.9 MHz(I) Audio output power 10%THD 1W×2 Antenna Impedance 75Ω(Unbalance) Power Consumption 36W Power Supply : AC~100-240V,50/60Hz KLC-1521QS
item Port list 1 RF cable 2 SCART 3 PC VGA input 4 Y、Pb/Cb、Pr/Cr 5 Video 6 Audio input 7 Headphone audio output 8 Power port
ADJUSTMENT MANUAL
TEST NOTE
1. Please follow the pointed test steps and choose the right test equipment to conduct adjustment, otherwise good effect of Unit could not be obtained. The unit should be warmed up for 30 minutes before adjustment and every parameter should be adjusted repeatedly till the optimum value obtained, the pointed voltage value should be ensured during test to get satisfied test result.
2. Test environment
1) Temperature 15°C~35°C 2) Relative Humidity 45%~75% 3) Air pressure 86KPa~106KPa
3 Test equipments(The following equipment should be calibrated before testing) 1) Computer 1 set 2) Multi-meter (VICTOR VC9801) 1 set 3) Video Signal Generator (Chroma Model 2227/2327) 1 set 4) Color Analyzer (Chroma Model 7120 ) 1 set 5) DDC card (DYNACOLOR, INC D8330) 1 slice 6) TV Video Signal Generator (FLUKE PM54200) 1 set
4 Factory mode adjustment 4.1 Enter factory mode adjustment Using the remote control, press Menu button once first , then press RECALL button five times,and you can see manufacture menu on the LCD panel. 4.2 Factory menu operation method Press the PROG / button to selection the sub menu of factory menu(including F、E、UOCⅢ、Temp), and press the VOL to enter the sub menu and setting the value. 4.3 Exit the factory menu Press the MUTE button again and again or turn off the TV, it can exit the factory menu. 4.4 AGC adjustment
In TV mode, receive 60dB split field signal.Enter factory mode menu “UOCⅢ” item, press PROG / to select “RF AGC” ,then use VOL/ to adjust the item until the voltage of Pin 1 of N100 to be about 2.5V±0.2V, then noise wave of the picture point disappears. 4.5 White calibration adjustment 4.5.1 Receive black or white signal under AV or PC mode, adjusting brightness and contrast to set the brightness to 15Nit in dark area and 90 Nit in bright area. 4.5.2 Adjust white balance.Press MENU button once, then press RECALL button five times to enter factory menu, select “Temp” Menu, Adjust Red 0-100 Green 0-100 Blue 0-100 4.5.3 Adjusting chromaticity coordinates of black and white to fit the requirement, or plug automatic calibration system to adjust white calibration automatically.
BLOCK DIAGRAM
X102 M9453
X101 M3953
N100 Tuner
AGC
SIF
VIF
Audio N201 TDA1517
Audio 2 L,R
VGA Audio IN
port Y Pb Pr
UO
Port VGA
D
VGA-DAT
VGA-CLK
+12V Supply
Earphone
speaker
AMP_L
AMP_R
+12V Supply
AU2IN_L,R
AU3IN_L,R
VGA R,G,B VGA Hs,Vs
Y,Pb/Cb,Pr/Cr
,
Signal Block Diagram
SCART CVBSSCART RGB AUDIO L,R
N401
MAIN IC
TDA15021H
KEY B1、B0 IR
PWRON
DDC/HWI2C
BKLON
VCC-5Ua VCC-3.3VUSB VCC+1.8a VCC+1.8b
3.3V Supply 2.5V Supply
N303 PI5V330
C R,G,B
YUVHs YUVVs
M_Rst M_CLK M_SDA M_CS
N501 MST518
Y_GPb_B Pr_R
DC/HWI2C
LCD
PANEL
N301 PI5V330
N302 24LC21
To N401
SDASCL
LED R,G
VCC-PAN
IC BLOCK DIAGRAM 1 N401(TDA15021H1)
2 N501 (MST518)
Trouble Shooting
Key IC list
Item Type Maker Package Circuit No. Qty.
1 TDA15021H1 Philips QFP128 N401 1 2 MST518 MSTAR PQFP160 N501 1 3 24LC32A MICROCHIP SOIC-8 N402 1 4 24LC21A MICROCHIP SOIC-8 N302 1 5 MP1410ES-SOIC-8 MPS SOIC-8 N801,N802 2 6 FDS9435A FAIRCHILD SOIC-8 N803 1 8 TDA1517 PHILIPS SIL9MPF N200 1
FSAV330 FAIRCHILD9 TS5V330 TI
TSSOP-16 N301 1
11 1117-3.3V BCD SOT223 N804,N806 2 12 1117-2.5V AAC SOT223 N805 1 14 Tuner AFT1/3100G Qingjia N100 1
Start order:
Turn on the power
N401 RESET and IO port initialize
N501 electrify ,reset, initialize
Turn on back light lamp
Successful start and LCD display
1)Verify the state of TV set.Please switch the TV on ,then verify the LED color. Red is
standby state and green is working state.
2)Checking Supply Power.If the color of LED is yellow,the power supply for signal board 。
N801 supply 5V and N802 supply 3.3V,N804、N806 supply 3.3V power(Test the PIN 2).N805
supply 2.5V(Test the PIN 2),D803 supply 8.3V,V401 and V402 supply 1.8V. All these are
for main IC N401,N501. 3)After turning on the power, if blank screen appears (no back light lamp), just press POWER button several times, if blank screen still there.Check if the voltage of every power supply is normal. 4)Check if the crystal oscillator X501(14.318180MHz) X401(24.576MHz) oscillate or not, and oscillate frequency is right or not. 5)Back light control signal (BKLON) of XS801 has high level (about 2.5V) or not, if not, check whether fault soldered or short circuit happened。 6) If back light lamp is on while there is no display,check N407 and N501’s reset circuit and the output of the oscillator to confirm the CPU and SCALER are working or not.If RGB is abnormal,check N501;If RGB is working correctly and the other channel is abnormal ,please check N501.
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11
12
13
14
15
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14
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162738495
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13
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KONKA CO.LTD (NDA)
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Appendix 1 Пиложение 1.
2. Типы Дефектов
Electrical Outgouing Inspection Specification TFT LCD Спецификация для электрических проверокЖК панелей
1. Conditions Условие проведения проверокviewing distance 60 ~ 80 cmambient illumination 300 ~ 400 Lux (nominal 350 Lux)viewing angle 90 градусов к поверхности панели (45' лево/45' display pattern Pure R, G, B, Black and Whiteinspection area active area
Defect Type Accept Bright dot Яркий субпиксель (имеет большую яркость чем соседние) a) random случайный b) two adjacent два вместе c)three adjacent три вмете
a) N ≤ 1 b) N = 0 c)N = 0
Dark dot Темный субпиксель (имеет чёрный цвет) a) random случайный b) two adjacent два вместе (Fig. 2) c) three adjacent три вместе
a) N ≤ 8 b)N ≤ 2 c)N = 0
Low dot random Не яркий (имеет яркость такую же как соседние точки/субпиксели либо меньшую) субпиксель, случайный N ≤ 8Minimum distance between defects, (Fig.1) L ≥ 5mm
Fig 1.
Fig 2.
90
Допускаются пятна яркости по краям экрана размером не более 20 мм в длину и 8 мм в ширину.
Внутренние дефекты матрицы.Пятна яркости.
15 mm
5 mm
Appendix 1 Пиложение 1.
2. Типы Дефектов
с) three adjacent три вместе c)N ≤ 1
a) random случайный a) N ≤ 6b) two adjacent два вместе (Fig. 2) b)N ≤ 2 c) three adjacent три вместе c)N ≤ 1
a) случайный a) N ≤ 6b) two adjacent два вместе b)N ≤ 2
Electrical Outgouing Inspection Specification TFT LCD BOEСпецификация для электрических проверокЖК панелей
1. Conditions Условие проведения проверокviewing distance 30 ~ 50 cmambient illumination 300 ~ 700 Lux (nominal 500 Lux)
viewing angle Угол обзора (осмотра)
Угол по вертикали ±25о, по горизонтали ±40о
Vertical viewing angle ±25o, horizontal viewing angle ±40o
display pattern проверочное изображение Pure R, G, B, Black and Whiteinspection area зона проверки active area/ активная зона
Defect Type Accept Bright dot Яркий субпиксель (имеет большую яркость чем соседние) a) random случайный b) two adjacent два вместе c)three adjacent три вмете
a) N ≤ 6 b) N ≤2 c)N = 0
Dark dot Темный субпиксель (имеет чёрный цвет)
Low dot random Не яркий (имеет яркость такую же как соседние точки/субпиксели либо меньшую) субпиксель,
Dark dot + Bright dot Яркий + тёмный субпиксель N ≤ 7
Minimum distance between defects, (Fig.1) L ≥ 5mm
Fig 1.
Fig 2.
45o25o
по горизонтали
По вертикали
Допускаются пятна яркости по краям экрана размером не более 20 мм в длину и 8 мм в ширину.
Внутренние дефекты матрицы.Пятна яркости.
15 mm
5 mm