KST-4217SE SERVICE-MANUAL -...

SERVICE MANUAL KST-4217SE -------------------------------------------------------------------------------------------------------

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KAON iDTV

KST-4217SE SERVICE MANUAL


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INDEX

1. Block Diagram -------------------------------------------------------------------------- 3

2. Technical Specification ---------------------------------------------------------------- 4

2.1 Main Board -------------------------------------------------------------------------- 4

2.2 MPEG Board -------------------------------------------------------------------------- 7

2.3 Connector --------------------------------------------------------------------------- 8

2.3.1 Layout ------------------------------------------------------------------------- 8

2.3.2 Pin Assignment ----------------------------------------------------------------- 8

2.4 ETC --------------------------------------------------------------------------------- 11

3. Trouble Shooting Guide ----------------------------------------------------------------- 12

3.1 Exterior Test ----------------------------------------------------------------------- 12

3.2 Main Board -------------------------------------------------------------------------- 12

3.2.1 No Power ----------------------------------------------------------------------- 12

3.2.2 No Video (PC RGB Signal) ------------------------------------------------------- 13

3.2.3 No Video (HDMI Signal) --------------------------------------------------------- 14

3.2.4 No Video (YPbPr Signal) ------------------------------------------------------- 15

3.2.4.1 Component YPbPr Signal ----------------------------------------------------- 15

3.2.4.2 Digital TV Signal ---------------------------------------------------------- 16


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3.2.5 No Video (CVBS Signal) --------------------------------------------------------- 17

3.2.6 No Video (SCART1_RGB_Signal) --------------------------------------------------- 18

3.2.7 No Video (SCART1&2_CVBS_Signal) ------------------------------------------------ 19

3.2.8 No Video (Tuner CVBS) ---------------------------------------------------------- 20

3.2.9 No Sound ----------------------------------------------------------------------- 21

3.3 Mpeg Board -------------------------------------------------------------------------- 23

3.3.1 No Power ----------------------------------------------------------------------- 23

3.3.2 No Video (Digital TV Signal)---------------------------------------------------- 24

3.3.3 No Sound (From MPEG to Main Board) --------------------------------------------- 25

3.3.4 No CI Card Detect -------------------------------------------------------------- 26

4. Schematic ------------------------------------------------------------------------------ 27

4.1 Main Board Schematic ---------------------------------------------------------------- 27

4.2 OSD Key Board Schematic ------------------------------------------------------------- 40

4.3 IR Board Schematic ------------------------------------------------------------------ 41

4.4 MPEG Board Schematic ---------------------------------------------------------------- 42

5. Bill of Materials ---------------------------------------------------------------------- 52

6. Gerber data ---------------------------------------------------------------------------- 61

6.1 Main PCB Gerber --------------------------------------------------------------------- 61

6.2 OSD PCB Gerber ---------------------------------------------------------------------- 67


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6.3 IR PCB Gerber ----------------------------------------------------------------------- 70

6.4 MPEG PCB Gerber --------------------------------------------------------------------- 73

1. Block Diagram


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2. Technical Specification

2.1 Main Board

Items Specifications

Display

Target Panel Size LCD 26~42 inch

Aspect Ratio 16:9

Resolution Up to 1366x768

Refresh Rate 50Hz, 60Hz

Maximum Pixel Rate Supports dual link up to 165MHz dot clock for WXGA

Interface Single or Dual Channel LVDS

Supported Signals

Analog PC

H Frequency Range : 20 ~ 82 kHz

V Frequency Range : 55 ~ 90 Hz

Maximum resolution : 1280 x1024@ 60Hz

Maximum pixel rate : 108 MHz

DTV mode support : 720p/1080i/480p/576p (50Hz,60Hz)

Separate / SOG sync support

HDMI

DTV mode support : 720p/1080i/480p/576p (50Hz,60Hz)

SVGA(60)

XGA(60)

CVBS, S-Video

PAL-B/D/G/H/I

NTSC-4.43

NTSC-M

SECAM L/L’

PAL-60

Component

1080i

720p

480i / 576i

480p / 576p

Analog TV PAL/SECAM Systems

Digital TV DVB-Satellite Digital TV Standard

Input Range : SD (1080i, 720p, 576i/p)

Impedance ANT In (75 ohms coaxial cable)

Input Ports (Video)

DTV Module I/F x 1 Y/Pb/Pr Component Video (1080i, 720p, 576i/p)

Scart x 2 Scart CVBS In, RGB In, RF Out

Composite x 1 RCA Video Line In x 1

Component x 1 Y/Pb/Pr DTV RCA In (75 ohms , 0.7Vp-p)

PC Analog x 1 D-Sub RGB In (Analog : 75 ohms ±10%, 0.7Vp-p ±5%)

HDMI x 2 HDMI V1.2 Compliant with HDCP 1.2


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Analog TV x 1 PAL/SECAM Multi Tuner

In/Output (Audio)

DTV L/R x 1 Analog L/R In

SCART L/R x 2 Scart Stereo Sound In/Out (500mVrms)

Composite L/R x 1 RCA Stereo Audio Line In (500mVrms)

PC Analog L/R x 1 Phone Jack Stereo Audio Line In (500mVrms)

Component L/R x 1 RCA Stereo Audio Line In (500mVrms)

Analog SIF Tuning system

Digital Audio Out DTV Module S/PDIF and HDMI Audio optical output

Speaker Out 10W × 2 Stereo Speaker (8 ohms)

TV

Tuning Range 45MHz~889MHz

No of Programs 100 Channels

Sound System BG, DK, I, L, L’

MTS Support Mono / Stereo / NICAM / Bi-Lingual

Color 4/8bit color OSG Display with two planes

OSD

OSD Type Graphic & text

Language Support

Unicode string format

English/Deutsch/Espańol/Finnish/Swedish

(later)All languages support

(later)Supports Arabic reversed string order.

Image Adjustment

Contrast / Brightness / Sharpness / Color / Tint(NTSC)

Color Temperature

Picture Standard Select

Image aspect ratio

NR(3D Noise Reduction)

Phase Adjustment ( PC only )

Active Color

User Functions

TV Function

Country

Auto Store

Manual Store

- Color System

- Sound System

- Channel Edit

- Manual Frequency Search Edit


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Digital TV Function

Channel Search

Edit Channel Edit

Program Guide

System setting

Utility

Common Interface

Sound Function

Sound Mode

Equalizer

Balance

Auto volume control (TV only)

TV Speaker

PC Function

Auto adjustment

Frequency adjustment

Phase adjustment, Clock adjustment

Up to 32 analog PC mode memorize

PIP Function

PIP Mode

(PIP On⇒Double Window1⇒Double Window2⇒PIP Off)

PIP source select

PIP position

PIP swap

TTX Up to 4.5K

Supports Teletext 2.5 spec

Timer

Sleep time select

Current / On / Off time adjustment

On time channel / volume

Miscellaneous OSD Language select

OSD tone select

Power

Supply Voltage AC 100V ~ 240V (60/50Hz)

Max Supply Power 215 Watt

Back light Power 24Voltage (170 Watt)

Standby Power 2.1 Watt

Panel Inner Power DC 12V or 5V (depends on Panel)


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2.2 MPEG Board - Digital TV (DVB-S2)

- MPEG4 HD / H.264– AVC / MPEG2 Video Decoding

- Dolby AC3 down Mix

- Common Interface

System Resources Specification

Main Processor STB7100, 32bit RISC [266MHz]

Flash Memory 8Mbyte ( Max 64Mbyte support)

System Memory 128Mbyte ( Max 256Mbyte support)

EEPROM 32Kbyte (optional expand)

Broadcast RF parameter DVB-S2

RF Input range 950MHz ~ 2150MHz

Dynamic range -65dBm ~ -25dBm

Input connector F-type, Female

Input impedance 75ohm

Multi-standard demodulation DVB-S2 = QPSK,8PSK

Symbol rate DVB-S2= Max QPSK 36 MSPS @ 108MHz fsamp

Max 8PSK 30 MSPS @ 108MHz fsamp

Multi-standard decoding LDPC and BCH (1/4,1/3,3/4,5/6,6/7,7/8)

MPEG2 TS A/V Decoding

Transport Stream MPEG2 ISO/IEC 13818

Profile Level MPEG-2 MP@ML, MPEG-4/AVC [email protected]

Input Rate Max. 100M bps

Aspect Ratio 4:3, 16:9, Letter Box

Video Resolution 1920*1080i, 1280*720p, 720*576i/p

Audio Decoding Dolby AAC, AC-3, MPEG-1 layers 1,2 and 3(MP3)

Conditional Access System

Common Interface 1 Common Interface Slot for embedded CAS


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A/V & Data Input/Output Video Y/Pb/Pr output

Audio L/R output

USB 2.0 ( Upgrade) VIA PC USB2.0 480Mbps high speed support

Type -A connector

2.3 Connector

2.3.1 Layout

2.3.2 Pin Assignment a. LVDS-out Connector (J4)

Pin No. Symbol Description 1 VLCD Power Supply +12V 2 VLCD Power Supply +12V 3 VLCD Power Supply +12V


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4 VLCD Power Supply +12V 5 GND Ground 6 GND Ground 7 GND Ground 8 GND Ground 9 Select Select LVDS Data Format 10 DCR Enable Dynamic CR Enable 11 GND Ground 12 RA- LVDS Receiver Signal(-) 13 RA+ LVDS Receiver Signal(+) 14 GND Ground 15 RB- LVDS Receiver Signal(-) 16 RB+ LVDS Receiver Signal(+) 17 GND Ground 18 RC- LVDS Receiver Signal(-) 19 RC+ LVDS Receiver Signal(+) 20 GND Ground 21 RCLK- LVDS Receiver Clock Signal(-) 22 RCLK+ LVDS Receiver Clock Signal(+) 23 GND Ground 24 RD- LVDS Receiver Signal(-) 25 RD+ LVDS Receiver Signal(+) 26 GND Ground 27 NC No Connection 28 NC No Connection 29 GND Ground 30 GND Ground

b. Inverter Connector Pin Symbol Signal assignment 1 VBL 24V Power Input 2 VBL 24V Power Input 3 VBL 24V Power Input 4 VBL 24V Power Input 5 VBL 24V Power Input 6 GND Ground 7 GND Ground 8 GND Ground


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9 GND Ground 10 GND Ground 11 VBR-A PWM amplitude control 12 Von-off Backlight On/Off control

c. Front Key button/IR Connector (CN17)

Pin Symbol Description 1 Power On/Off Power Key 2 Menu Menu Key 3 CH_DN Channel Down 4 VOL_DN Volume Down 5 VOL_UP Volume Up 6 CH_UP Channel Up 7 SELECT_KEY Select/Source Key 8 GND Ground 9 LED_A_ON Front LED Control 10 LED_B_ON Front LED Control 11 IR_Receiver Interrupt input 12 VCC Stand-by 3.3V

13,14,15 GND Ground

d. Power Supply Connector (CN7) Pin Symbol Description

1,2,3 12V Power supply of 12Vdc 6,7,8 5V Power supply of 5Vdc 4,5,9,10 GND Ground 11 STB 5Vdc of Standby 12 PWR Power On-Off Control

e. Inverter Control Connector (CN2) Pin Symbol Description 1 BLK Backlight On/Off Control 2 DIMMER PWM amplitude control


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3 NC No Connection 4 NC No Connection

f. Main Audio Speaker out Connector (CN3) Pin Symbol Description 1 L_SPK+ Main Speaker L+ Output 2 L_SPK- Main Speaker L- Output 3 GND 4 R_SPK- Main Speaker R- Output 5 R_SPK+ Main Speaker R+ Output

g. MPEG Board Interface Connector (J6) Pin Symbol Description 1 DTV_RXD UART Receiver 3 DTV_TXD UART Transmitter

2,4,6 D5Vcc Power Supply 5Vdc 7 DTV_Y Component Y Signal From MPEG Board

11 DTV_Pb Component Pb Signal From MPEG Board 13 DTV_Pr Component Pr Signal From MPEG Board 14 DTV_CVBS CVBS Signal From MPEG Board 17 DTV_L Left Audio Signal From MPEG Board 21 DTV_R Right Audio Signal From MPEG Board 25 SPDIF_DTV SPDIF Signal From MPEG Board 27 DTV_STBY_CTL MPEG Board Control in Standby mode

24,26,28 D12V Power Supply 12Vdc 5,8,9,10,12, 15,16,18,19, 20,22,23

GND Ground

* Notice: The Pin map of connector J6 (Main Board) & J3 (MPEG Board) is same.

UART communication between Main Board and MPEG Board is available

by DTV_28Pin cable.

2.4 ETC

Description Specification

Physical Dimensions - Main Body Size: 1,023 x 743 x 328mm( W x H x D)


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3. Trouble Shooting Guide

3.1 Exterior Test

Check the condition of install, joining of connectors, broken or bending PCB, cold-soldering or short of components

and problem of part, etc

3.2 Main Board

3.2.1 No Power

- Box Size: 1,140 x 885 x 380mm (W x H x D)

Weight - Net/W: 32.0Kg

- G/W: 38.4Kg

Accessories Remote Controller, Battery (AAA Type),

Operating Manual, Power Code


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3.2.2 No Video (PC RGB Signal)


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3.2.3 No Video (HDMI Signal)


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3.2.4 No Video (YPbPr Signal)

3.2.4.1 Component YPbPr Signal


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3.2.4.2 Digital TV Signal


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3.2.5 No Video (CVBS Signal)


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3.2.6 No Video (SCART1_RGB_Signal)


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3.2.7 No Video (SCART1 & SCART2_CVBS_Signal)


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3.2.8 No Video (Tuner CVBS)


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3.2.9 No Sound


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3.3 MPEG Board

3.3.1 No Power


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3.3.2 No Video (Digital TV Signal)


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3.3.3 No Sound (From MPEG to Main Board)


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3.3.4 No CI Card Detect


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4. Schematics


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4.1 Main Board Schematic


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4.2 OSD Key Schematic


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4.3 IR Board Schematic


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4.4 Mpeg Board Schematic


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5. Bill of Materials


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6. Gerber data

6.1 Main PCB Gerber


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MAIN PCB - TOP SILK


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MAIN PCB - TOP PATTERN


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MAIN PCB – BOTTOM SILK


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MAIN PCB - BOTTOM PATTERN


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MAIN PCB – INTERNAL1_GND


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MAIN PCB – INTERNAL2_POWER

6.2 OSD Key PCB Gerber

OSD PCB - TOP SILK


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OSD PCB - TOP PATTERN


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OSD PCB - BOTTOM PATTERN


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6.3 IR PCB Gerber


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IR PCB - TOP SILK


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IR PCB - TOP PATTERN


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IR PCB – BOTTOM PATTERN


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6.4 MPEG PCB Gerber

MPEG PCB – TOP SILK


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MPEG PCB – TOP PATTERN


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MPEG PCB – BOTTOM SILK


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MPEG PCB – BOTTOM PATTERN

Date post:	10-Apr-2018
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