Skyworth 8M17A Schematic
SERVICE MANUAL
8M17A CHASSIS
Design and specifications are subject to change without prior notice. (Only for Referrence)
Description: SERVICE MANUAL 8M17A
MODEL. Brand Name:
JOB NO.
Engineering Dept:
-1-
Artwork By: Date: 2013-4-25
SIZE:A4
Checked By: Date:
Approved By: Date:
CONTENT
CONTENT ------------------------------------------------------------------------2
Technical Specification-------------------------------------------------------3-14
Block Diagram -----------------------------------------------------------------15-16
List of key parts-----------------------------------------------------------------17
IC BLOCK Diagram--------------------------------------------------------------18-43
MAIN PCB-TOP------------------------------------------------------------------44-45
MAIN PCB-BOT------------------------------------------------------------------46-47
Circuit Diagrams----------------------------------------------------------------48-64
-2-
Technical Specification
1. Application Area:
This product standard is use for LED chassis.
2. Specification:
All the standard are measured under following conditions without other specification.
2.1 Ambient Temperature: 20+/-5℃
2.2 Relative Humidity: 65+-10％
2.3 Power Supply Voltage: 12VDC
2.4 Adjust after 20 minutes warm-up.
3. Test and check method:
3.1 Capability: According to nation test standard
3.2 Safety: IEC60065
3.3 EMC: standard
standard
-3-
Technical Specification
％
％
％
％
％
％
4. Safety and Regulation
NO. Item Min Typ Max Unit Remark
1.
2.
3.
4.
Force Stability-Incline plane Tip Test 10 deg
Force Stability-Level Tip Test 100 N
Isolation Gap AC-AC/AC-DC 3 mm
Isolation Gap 6 mm
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Power Consumption 11 W 14E57
Power consumption Standby 0.4 1 W
Dielectric Voltage 3 kV
Isolation Resistance 4
Leakage Current 5 MAp-p
Power cord captivity 40 N
Flammability—Back Cover PASS
Sharp edge PASS
UL Compliance NO
FCC Compliance NO
CDRH Radiation Compliance NO
CSA Compliance NO
CEB Compliance NO
CE Compliance
CB Compliance YES
MΩ
Base on different order
5. Video
NO. Item Min Typ Max Unit Remark
1. Linearity Distortion, Vertical 1
2. Linearity Distortion, Horizontal 1
3. Trapezoidal Distortion, Vertical 1
4. Trapezoidal Distortion, Horizontal 1
5. Over scan, Vertical 93 95 97
6. Over scan, Horizontal 93 95 97
7. Brightness Maximum 200
14E57
8. Video Noise Limited
Sensitivity(@S/N=30dB) VHF
60 dBuV
Technical Specification
9. Video Noise Limited
Sensitivity(@S/N=30dB) UHF
60 dBuV
-4-
10. Selectivity -1.5M 35 dB
％
％ THD
11. Selectivity +8M 40 dB
12. Tuning Range -0.7 MHz
13. Resolution Horizontal 1366 Lines
14. Resolution Vertical 768 Lines
6. Chroma
NO. Item Min Typ Max Unit Remark
1. White Balance, X axis
2. White Balance, Y axis
3. White Balance, Color Temperature 6500 9800 12500 kdeg 12500(266,276)
9800(280,290)
6500(313,329)
4. Color Sensitivity 30 dB
5. Color Burst Lock-in Range +/-300 Hz
6. Color Killer Sensitivity 30 dBuV
7. Audio
NO. Item Min Typ Max Unit Remark
1. Audio Noise Limited Sensitivity, VHF-L 25 dBuV
2. Audio Noise Limited Sensitivity,VHF-H 25 dBuV
3. Audio Noise Limited Sensitivity, UHF 28 dBuV
4. Buzz(S/N Ratio) 40 dB
5. Distortion 3
6.
7. Audio ouput,Center 1 W
8. Stereo Separation N/A dB
9. Speaker Impedance 4 ohm
10. Speaker Power rating 4 W
Audio ouput,L/R,at 7
2 W
8. Power
NO. Item Min Typ Max Unit Remark
1. DC Voltage, Audio 5 V
2. DC Voltage, Tuner 3.3 V
Technical Specification
9. External Interface
NO. Item Min Typ Max Unit Remark
1. Video Input Level 1 Vp-p 75 ohm
-5-
2. Video Input Frequency Response 4.5 MHz
％
％
Vp-p
Vp-p
pixel
pixel
kHz
Hz
3. Video Input S/N 40 dB
4. Audio Input Level 0.5 Vrms
5. Audio Input Frequency Response 20 kHz
6. Audio Input S/N 40 dB
7. Audio Input Distortion 3
8. Audio Input Dynamic Range 2 Vrms
9. Video output Level N/A Vp-p
10. V ideo ouput Frequency Response N/A MHz
11. Video output S/N N/A dB
12. Audio output Level N/A Vrms
13. Audio output Frequency Response N/A Hz
14. Audio output S/N N/A dB
15. Audio output Distortion N/A
16. Video Input Level,R/G/B 0.7
17. V ideo Input
Level,Component(Y,Pb,Pr)
18. RGB Input Resolution,Vertical N/A
19. RGB Input Resolution,Horizontal N/A
20. RGB Input Horizontal Frequency N/A
21. RGB Input Frame Rate N/A
0.7
10. The Others
NO. Item Min Typ Max Unit Remark
1. Search sensitivity 40 dBuV
2. Clock,real time gain or loss(sec per
day)
3. Software Funcitonality Test YES
4. REMOCON Working
sensitivity,Straight
5. REMOCON Working
sensitivity,T/B/L/R
6. Close caption sensitivity N/A dBuV
7. Teletext sensitivity 46 dBm
8. Resonance of unit(sweep
freq:50~1000)
NO sec
8 m
6 m
NO
Technical Specification
11. Customer Menu Setup(as shipped condition)
NO. Item Specification Remark
1. PSM Standard
-6-
2. SSM Standard
％
％
％
3. Volume 30
4. Mute off
5. Input Mode RF-Air
6. Customer menu language English Base on different order
7. AVL off
8. Sleep Timer off
9. Auto sleep off
10. Blue back on
11. Surround N/A
12. Caption N/A
13. Noise Reducer Middle
12. Reliability
NO. Item Min Typ Max Unit Remark
1. ESD 4 kV IEC-1000-4-2
2. EFT/Burst kV IEC-1000-4-4
3. Surge Immunity kV IEC-1000-4-5
4. Voltage Dip Test,10ms
5. Voltage Dip Test,100ms
6. Operation Temperature deg
7. Operation Humidity
8. Storage Temperature deg
9. MTBF(confidence Level:90%) hour
IEC-1000-4-11
IEC-1000-4-11
-7-
Technical Specification
Productions Specification
Model # 14”
Country( West Eu./East
Eu./Russia/AP/US/S.A./Japan/…)
Brand Skyworth/ODM
Category (Monitor/TV/Combo/Portable TV…) TV
Panel technology (LCD / PDP) LED
Market Position (High/Mid/Access,,,) Class
Cabinet Design (Example: 01,23 series ) E57
Product Nb -
Chassis solution MST6M182XSET
Chassis name 8M17A
Chassis PCB Standard Follow Compal’s model
Predecessor (replace) -
MP date requested (ETD) 2013.5
MP date confirmed by supplier (ETD/ETA) -
Status( Pre./Finish ) -
Regional requirement
Homologation
(Gostandard/CE/MPTT/CB/…)
RoHS Yes
Power supply(100-240V AC +/-10%/...) 12V DC (+5%)
Power consumption working / Annual -
Power consumption standby <1W
Power plug(VDE/UL/BS/…) VDE
Picture display
Screen size : diagonale (inch) 14”
Aspect ratio (16/9 // 4/3 // 15/9) 16:9
1st panel supplier : panel suppliers AUO
1st panel supplier : panel reference
Panel Display Type(MVA/PVA/IPS/…) TFT LCD
1st panel supplier : resolution 1366X768
Dynamic contrast ratio 500:1
Video signal process
Comb Filter (2D/3D) 3D
Noise Reduction (adaptative/3D/…) 3D
Russia
CB
Picture improvement
( LTI/CTI,BLE,WLE,...)
-8-
LTI/CTI
Technical Specification
Color process (Gama correction/Skin
correction /... )
Colour preset
(Cool/Normal/Warm/Personal)
Picture control
( Bright/Con./Sharpness/Color/Tint/…)
Picture presets : Standard / Bright / Soft /
User
Picture freeze Yes
Multi picture : PIP ( AV )/POPAV NO
Dynamic Backlight Control NO
LED Backlight Yes
Deinterlacer (No/linerar/motion
adaptive/motioncompensative)
Film mode / reverse 3:2/2:2 pull down Yes / Yes
Full HD support ( 1080P ) Yes
Single scan / Dual scan ( 120HZ ) Single scan
Zoom type : 4/3 format YES
Zoom type : 14/9 Zoom NO
Zoom type : 16/9 Zoom YES
Zoom type : 16/9 Zoom up/down YES
Zoom type : Cinerama YES
Zoom type : 16/9 Format YES
Zoom type : Auto ( by SCART Pin8 and
WSS )
Picture Auto adjustment (PC mode) N/A
3D Panel Type(PR / SG) N/A
3D Mode
3D To 2D (Y/N)
2D To 3D (Y/N)
Left / Right Swap (For PR Panel)
Sound
Sound type ( Mono/AV stereo/Stereo ) Mono
Music Power (Watt)/RMS Power (Watt) 1X2W
Tone control ( Bass&Treble / Graphic
Equalizer )
Special sound effect ( AVL / WIDE /
Pseudo /… )
Suround system ( Dolby / VD / SRS / BBE
/ … )
Normal / Soft / Personal/ Bright
Follow main IC
Cool/Neutral/Warm
3D motion adaptive
Bass&Treble
Yes
N/A
AVL
N/A
-9-
Technical Specification
Sound control ( Volume , Balance , Mute ) Volume, Mute
Sound presets
(User/Speech/News/Standard)
Headphone volume control ( Separated /
linked )
Sound quality ( High / Mid / Low )
Reception and Decoding capability
RF rangeATV
RF rangeDTV VHF 177-213 MHZ, UHF 473-803 MHZ
Color System (PAL/SECAM/NTSC/PAL
M,N )
Audio Standard ( B/G/H/D/K/K'/I/L/L' ) BG / DK / I / L
Stereo audio system ( Nicam,MTS,A2,….) N/A
Video standard NTSC 3.58 / 4.43 (AV)/PAL
60
DTV SD support (DVB-T/S/C , ATSC ,
QAM , … )
DTV HD Support N/A
MHEG5 NO
HD capability with YPbPr Yes (720p; 1080i; 1080p@24/50/60Hz;
PC capability (up to maximum format) 1920X1080 60Hz
HDMI capability AV/PC Format) Up to 1080P 24/50/60HZ
Compatible video format if DVD/USB:
DviX/VCD/SVCD/JPEG/AVI/MPEG2/WMV-
HD/SD
Compatible audio format if
DVD/USB:MP3/WMA/AAC/MPEG1/…
Playable Discs
(CD/CD-R(RW)/CD-ROM/DVD+R/+RW/-R/-RW)
Card reader format compatibility NO
Macrovision Yes
PVR N/A
Network NO
User convenience
OSD Language* English
OSD Positioning No
OSD Transparency Adjust No
OSD Timeout Adjust No
Customer Brand name(LOGO) Yes
Personal/Standard/Music/News/Film
N/A
54MHz～864MHz
PAL/SECAM
PAL 4.43
N/A
480i/p; 576i/p)
JPEG/MPEG2/MPEG4/DivX
/H.264(depending on license)
MP3/WMA(depending on license)
NO
-10-
Technical Specification
IB languages English
ATV Program Numbers (example: 99+3AV
input )
DTV Program Numbers N/A
Program edit ( naming , sorting , skip ,
swap …. )
Auto Naming/Auto Sorting No
TV Guide(DTV EPG) N/A
Favorite program No
Number of buttons on cabinet (Power;
Vol+/-; Pr+/-,Menu )
Main switch button (Yes/No) No
CCD(Closed Caption)/V-CHIP No
Text Standard: (Top, FLOF,,,) Yes
Teletext Level: 2.5 / 1.5 -
Pages for teletext 1000
Teletext character sets **** -
DVB-T teletext -
Real clock N/A
Sleep timer 10-240 Min
Timer Turn On / Off, Program Switch
Parent Control -Source and Channel lock
(Input code forcertain channel)
Parent Control - Child lock (set the lock of
the keyboard,only the RCU can control the TV)
Parent Control - Kid pass (preset the
ontime, channel foreach day of the week)
Parent Control - Channel lock (For digital
transmissionand DVD program, to filter some
programms)
Calendar / Games No
No program auto switch off Yes
Hotel mode (Y/N) Yes
DVD player (No/slot/tray) No
Tuner FM (yes/No) No
software download(RS232/CI/USB/OAD) USB
Factory reset Yes(in factory menu,reset the setting to
Screen saver Yes
Vol+/-; Pr+/-, Source,Power
shipment state )
200
Skip
No
Yes
No
No
-11-
Technical Specification
Blue Back No
LED indicator(Power on/Standby) Green / Red
Connectors -Rear
RF Input (Antenna): Air/ Cable/ 2in1 Air
Scart : CVBS in&out / RGB / S-VIDEO No
CINCH video in / outAV1 AV
CINCH audio in / out (No volumpe control
on Audioout/can be jack 3,5mm)
S-video in No
Component Video Input (YCrCb/YPrPb) YPBPR
Component Audio Input (YCrCb/YPrPb) SAME AS AV
VGA in / Audio L/R in / Jack audio in
3.5mm
HDMI 1
DVI No
Audio input for DVI No
CINCH subwoofer out / Coaxial out
(S/PDIF)
Headphone output connector (mm) No
RS232 ( Y/N , VGA or DB9 port …) No
Card Readers No
USB slot (No/1.1/2.0) 1
DVB-CI (common interface) No
External power converter input No
Connectors -Side
HDMI No
AV-IN No
AV-OUT NO
Component Video Input (YCrCb/YPrPb) NO
Component Audio Input (YCrCb/YPrPb) NO
Headphone output connector (dia.mm) NO
CINCH subwoofer out / Coaxial out
(S/PDIF)
USB slot (No/1.1/2) NO
DVB-CI (common interface) NO
DLNA NO
RF Input (Antenna): Air/ Cable/ 2in1 NO
VGA in / Audio L/R in / Jack audio in
3.5mm
AV AUDIO
No
No
NO
NO
-12-
Technical Specification
UI/RC
UI design (font/pixel, 2D/3D graphic
engine..)
RC Model YK76HG
RC system RGB Standard
RC # of keys
Accessories included
Carton (English/French/Spanish) English
IB English
Circuit diagram No
Batteries Yes
Product registration Card Yes(English)
DC Cable Length 1.5m
Audio Cord (Jack 3.5mm) No
VGA Cord No
Wallmount frame Optional
Antenna Cable No
6 in 1( YPbPr & CVBS) cable adapter No
3D Glasses No
General Data
Size (W x H x D, with stand) in mm
Size (W x H x D, without stand) in mm
Package Size (W x H x D, without stand)
in mm
Net Weight in kg
Gross Weight in Kg
Design / Mechanical
Wallmount VESA compatible (standard
reference)
Adaptor for VESA wallmount
compatibility
Desktop Stand (included/optionnal +
ref/No)
Panel Tilt (Fowards/Backwards/Rotation) No
Swivel function desktop stand (yes/No) +
motorized?
Docking station (yes/No) No
Floor Stand (included/optionnal + ref/No) No
Glass shield (yes/No) No
Finish on Front -
SOD Standard
Yes
Yes
included
No
-13-
Technical Specification
IN
IN
SYSTEM
SYSTEM BLOCK DIAGRAM
Finish on side -
Finish on back -
Finish on stand -
number of colors on carton box
Brand logo Customer Inlet
Other logo No
External AC/DC Power with DC power
cord (yes/No)
Handle (yes/No) No
Detachable speaker (yes/No) No
Rating Label langages English
No
YPBPR
+AUDIO IN
CVBS
USB
HDMI IN
FLASH
32Mb
MST6E182XDT
IF DEMODULATOR BUILD IN
MPEG 1/2/4 DECODER
JPEG/MP3 DECODER
3D COMB FILTER VIDEO DECODER
LVDS, DIM
ON/OFF
TDA18274
IF+/-
POWER SUPPLY
KEY PAD, IR RECEIVER
LCD PANEL
TPA6211
2W
8M17A
-14-
List of key parts
NO. Name Position Type P/N
1. IR
2. Speaker 14E57 4ohm/4W 5665-104064-0010
Follow to the
IR board
HS75438
5339-147438-0S00
3. Crystal
4. Tuner U3 TDA18274HD 4706-T18270-0480
5. IC
Y100 HC-4 4975-124052-RS00
X3 HC-4 4975-116052-SS00
U7 MP1495DJ 476A-M14950-0080
Q4/Q5 ME2345A 4600-M23450-0S00
U8/U10/U25 AS1117L-3.3 47B6-A11170-03
U4 AS1117L-1.8 47B6-A11172-03
U17 AS1117L-1.2 47B6-A11175-0300
U100 GD25Q32BSIGT 47F2-G25320-0080
U14 MST6E182XDT-Z1 475C-M6E181-1560
U13 TPA6211 4722-T62110-0080
U53 SY8086 47EC-S80860-0050
-15-
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