Skyworth 8M17A User manual

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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:

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Artwork By: Date: 2013-4-25
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
SIZE:A4

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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

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Technical Specification
4. Safety and Regulation
NO. Item Min Typ Max Unit Remark
1. Force Stability-Incline plane Tip Test 10 deg
2. Force Stability-Level Tip Test 100 N
3. Isolation Gap AC-AC/AC-DC 3 mm
4. Isolation Gap 6 mm
5. Power Consumption 11 W 14E57
6. Power consumption Standby 0.4 1 W
7. Dielectric Voltage 3 kV
8. Isolation Resistance 4 M
Ω
9. Leakage Current 5 MAp-p
10. Power cord captivity 40 N
11. Flammability—Back Cover PASS
12. Sharp edge PASS
13. UL Compliance NO
14. FCC Compliance NO
15. CDRH Radiation Compliance NO
16. CSA Compliance NO
17. CEB Compliance NO
18. CE Compliance Base on different order
19. CB Compliance YES
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

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10. Selectivity -1.5M 35 dB
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. Audio ouput,L/R,at 7
％THD
2 W
7. Audio ouput,Center 1 W
8. Stereo Separation N/A dB
9. Speaker Impedance 4 ohm
10. Speaker Power rating 4 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

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2. Video Input Frequency Response 4.5 MHz
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. Video 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
Vp-p
17. Video Input
Level,Component(Y,Pb,Pr)
0.7
Vp-p
18. RGB Input Resolution,Vertical N/A
pixel
19. RGB Input Resolution,Horizontal N/A
pixel
20. RGB Input Horizontal Frequency N/A
kHz
21. RGB Input Frame Rate N/A
Hz
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)
NO sec
3. Software Funcitonality Test YES
4. REMOCON Working
sensitivity,Straight
8 m
5. REMOCON Working
sensitivity,T/B/L/R
6 m
6. Close caption sensitivity N/A dBuV
7. Teletext sensitivity 46 dBm
8. Resonance of unit(sweep
freq:50~1000)
NO
Technical Specification
11. Customer Menu Setup(as shipped condition)
NO. Item Specification Remark
1. PSM Standard

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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
％
IEC-1000-4-11
5. Voltage Dip Test,100ms
％
IEC-1000-4-11
6. Operation Temperature deg
7. Operation Humidity
％
8. Storage Temperature deg
9. MTBF(confidence Level:90%) hour

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Technical Specification
Productions Specification
Model # 14”
Country( West Eu./East
Eu./Russia/AP/US/S.A./Japan/…)
Russia
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/…)
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
Picture improvement
( LTI/CTI,BLE,WLE,...)
LTI/CTI

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Technical Specification
Color process (Gama correction/Skin
correction /... )
Follow main IC
Colour preset
(Cool/Normal/Warm/Personal)
Cool/Neutral/Warm
Picture control
( Bright/Con./Sharpness/Color/Tint/…)
Yes
Picture presets : Standard / Bright / Soft /
User
Normal / Soft / Personal/ Bright
Picture freeze Yes
Multi picture : PIP ( AV )/POPAV NO
Dynamic Backlight Control NO
LED Backlight Yes
Deinterlacer (No/linerar/motion
adaptive/motioncompensative)
3D motion adaptive
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 )
N/A
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 )
Bass&Treble
Special sound effect ( AVL / WIDE /
Pseudo /… )
AVL
Suround system ( Dolby / VD / SRS / BBE
/ … )
N/A

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Technical Specification
Sound control ( Volume , Balance , Mute ) Volume, Mute
Sound presets
(User/Speech/News/Standard)
Personal/Standard/Music/News/Film
Headphone volume control ( Separated /
linked )
N/A
Sound quality ( High / Mid / Low )
Reception and Decoding capability
RF rangeATV 54MHz
～
864MHz
RF rangeDTV VHF 177-213 MHZ, UHF 473-803 MHZ
Color System (PAL/SECAM/NTSC/PAL
M,N )
PAL/SECAM
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
PAL 4.43
DTV SD support (DVB-T/S/C , ATSC ,
QAM , … )
N/A
DTV HD Support N/A
MHEG5 NO
HD capability with YPbPr Yes (720p; 1080i; 1080p@24/50/60Hz;
480i/p; 576i/p)
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
JPEG/MPEG2/MPEG4/DivX
/H.264(depending on license)
Compatible audio format if
DVD/USB:MP3/WMA/AAC/MPEG1/…
MP3/WMA(depending on license)
Playable Discs
(CD/CD-R(RW)/CD-ROM/DVD+R/+RW/-R/-RW)
NO
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