Skyworth 5R81A-50E79 Service Manual
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SERVICE MANUAL
5R81A-50E79 CHASSIS
Design and specifications are subject to change without prior notice. (Only for Referrence)
Description: SERVICE MANUAL 5R81A
MODEL. Brand Name:
JOB NO.
Engineering Dept:
Artwork By: Date: 2013-6-1
Checked By: Date:
Approved By: Date:
SIZE:A4
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CONTENT
CONTENT ------------------------------------------------------------------------2
Technical Specification-------------------------------------------------------3-12
Block Diagram -----------------------------------------------------------------13
List of key parts-----------------------------------------------------------------14
IC BLOCK Diagram--------------------------------------------------------------15-20
MAIN PCB-TOP------------------------------------------------------------------21
MAIN PCB-BOT------------------------------------------------------------------22
Circuit Diagrams----------------------------------------------------------------23-37
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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: Standard Input Voltage(100～240V AC 50/60HZ)
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 140 W 50E79
6.
Power consumption Standby 0.4 1 W
7.
Dielectric Voltage 3 kV
8.
Isolation Resistance 4
MΩ
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 NO BSMI
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 320 400
50E79
8. Video Noise Limited
Sensitivity(@S/N=30dB) VHF
60 dBuV
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Technical Specification
9. Video Noise Limited
Sensitivity(@S/N=30dB) UHF
60 dBuV
10. Selectivity -1.5M 35 dB
11. Selectivity +8M 40 dB
12. Tuning Range -0.7 MHz
13. Resolution Horizontal 3840 Lines
14. Resolution Vertical 2160 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
8 W
7. Audio ouput,Center 8 W
8. Stereo Separation 21 dB
9. Speaker Impedance 6 ohm
10. Speaker Power rating 10 W
8. Power
NO. Item Min Typ Max Unit Remark
1. DC Voltage, Audio 12 V
2. DC Voltage, Tuner 3.3 V
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Technical Specification
9. External Interface
NO. Item Min Typ Max Unit Remark
1. Video Input Level 1 Vp-p 75 ohm
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. V ideo 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. V ideo Input
Level,Component(Y,Pb,Pr)
0.7
Vp-p
18. RGB Input Resolution,Vertical 1080
pixel
19. RGB Input Resolution,Horizontal 1920
pixel
20. RGB Input Horizontal Frequency 68
kHz
21. RGB Input Frame Rate 60
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
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Technical Specification
11. Customer Menu Setup(as shipped condition)
NO. Item Specification Remark
1. PSM Standard
2. SSM Standard
3. Volume 30
4. Mute off
5. Input Mode RF-DTV
6. Customer menu language Traditonal Chinese
7. AVL On
8. Sleep Timer off
9. Auto sleep off
10. Blue back off
11. Surround off
12. Caption off
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
DTV-Productions Specification
Model #
50"
Country or Region( West Eu./East
Eu./Russia/AP/US/S.A./Japan/…)
Taiwan
Brand 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 ) E79
Product Nb Chassis solution RTD2975K
Chassis name 5R81A
Chassis PCB Standard Skyworth RGB New Standard
Predecessor (replace) -
MP date requested (ETD)
2013.6
MP date confirmed by supplier (ETD/ETA) Status( Pre./Finish ) -
Regional requirement
Homologation (Gostandard/CE/MPTT/CB/…) BSMI
RoHS Yes
Power suppl y(100-240V AC +/-10%/...) 100-240V AC (-10%,+10%)
Power consumption working / Annual Power consumption standby <0.5W
Power plug(VDE/UL/BS/…) BSMI/2pins
Picture display
Screen size : diagonale (inch)
50"
Aspect ratio (16/9 // 4/3 // 15/9) 16/9
1st panel supplier : panel suppliers CHIMEI
1st panel supplier : panel reference
Panel Display Type(MVA/PVA/IPS/…) TFT LCD
1st panel supplier : resolution 3840x2160
Dynamic contrast ratio
5000：1(TYP.)
Video signal process
Comb Filter (2D/3D) 3D
Noise Reduction (adaptative/3D/…) 3D
Picture improvement ( LTI/CTI,BLE,WLE,...) LTI/CTI
Color process (Gama correction/Skin correction /... ) Follow main Chip
Colour preset (Cool/Normal/Warm/Personal) Normal, Cool, Warm and User
Picture control ( Bright/Con./Sharpness/Color/Tint/…) Yes
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Picture presets : Standard / Bright / Soft / User
Standard / Mild / Film / Dynamic /
Personal
Picture freeze Yes
Multi picture : PIP ( AV )/POP（AV） No
Dynamic Backlight Control TBD
LED Backlight Yes
Deinterlacer (No/linerar/motion adaptive/motion
compensative)
motion adaptive
Film mode / reverse 3:2/2:2 pull down Yes / Yes
Full HD support ( 1080P ) Yes
Single scan / Dual scan ( 120HZ ) Dual scan ( 120HZ )
Zoom type : Auto ( by SCART Pin8 and WSS ) No
Picture Auto adjustment (PC mode) Yes
Sound
Sound type ( Mono/AV stereo/Stereo ) stereo
Music Power (Watt)/RMS Power (Watt) 2 x 8W
Tone control ( Bass&Treble / Graphic Equalizer ) Bass&Treble
Special sound effect ( AVL / WIDE / Pseudo /… ) AVL
Suround system ( Dolby / VD / SRS / BBE / … ) Built-in Surround
Sound control ( Volume , Balance , Mute ) Volume, Balance, Mute
Sound presets (User/Speech/News/Standard)
Standard / Music / Mov ie / Sport /
Personal
Headphone volume control ( Separated / linked ) Yes(Linked)
Sound quality ( High / Mid / Low ) Mid
Reception and Decoding capability
RF range（ATV） 54MHz～803MHz
RF range（DTV）
UHF 473-803 MHZ
Color System (PAL/SECAM/NTSC/PAL M,N ) NTSC
Audio Standard ( B/G/H/D/K/K'/I/L/L' ) M
Stereo audio system ( Nicam,MTS,A2,….) SAP
Video standard NTSC 3.58 / 4.43 (AV)/PAL 60 NTSC 3.58/4.43 , PAL
DTV SD support (DVB-T/S/C , ATSC , QAM , … ) DVB-T
DTV HD Support MPEG2,MPEG4,H.264
MHEG5 No
HD capability with Component（YPbPr）
Yes
(480i/576i/480p/576p/720p/1080i/1080p)
PC capability (up to maximum format) Up to 1600x1200 75Hz
HDMI capability （A V/PC Format)
Up to 1080P@120HZ&
3840x2160@30Hz
Compatible video format if DVD/USB:
DviX/VCD/SVCD/JPEG/AVI/MPEG2/WMV- HD/SD
JPEG/MPEG2/MPEG4/H.264/WMV/
RMVB
Compatible audio format if DVD/USB:
MP3/WMA/AAC/MPEG1/…
MP3/,WMA
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Playable Discs
(CD/CD-R(RW)/CD-ROM/DVD+R/+RW/-R/-RW)
No
Card reader format compatibility No
Macrovision Yes(Video input)
PVR NO
Network No
User convenience
OSD Language* English/Traditonal Chinese
OSD Positioning No
OSD Transparency Adjust No
OSD Timeout Adjust No
Customer Brand name(LOGO) Yes
IB languages Traditonal Chinese
ATV Program Numbers (example: 99+3AV input ) Cable 125
DTV Program Numbers 600
Program edit ( naming , sorting , skip , swap …. ) Delete,Skip,Rename,Move
Auto Naming/Auto Sorting No
TV Guide(DTV EPG) EPG(next Seven-day)
Favorite program Yes
Number of buttons on cabinet (Power; Vol+/-; Pr+/-,
Menu )
Vol+/-; Pr+/-, Men u ,Source,Power
Main switch button (yes/No) Yes
CCD（Closed Caption)/V-CHIP No/No
Text Standard: (Top, FLOF,,,) No
Teletext Level: 2.5 / 1.5 Pages for teletext Teletext character sets **** DVB-T teletext Real clock From DTV
Sleep timer 15-120 Min.
Timer Turn On / Off, Program Switch
Parent Control -Source and Channel lock (Input code for
certain channel)
No
Parent Control - Child lock (set the lock of the keyboard,
only the RCU can control the TV)
No
Parent Control - Kid pass (preset the ontime, channel for
each day of the week)
No
Parent Control - Channel lock (For digital transmission
and DVD program, to filter some programms)
No
Calendar / Games No
No program auto switch off 15 mins.
Hotel mode (Y/N) Yes
DVD player (No/slot/tray) No
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Tuner FM (yes/No) No
software download(RS232/CI/USB/OAD) USB
Factory reset
Yes（in factory menu,reset the setting to
shipment state )
Screen saver Yes
Blue Back No
LED indicator(Power on/Standby) Blue / Red
Connectors -Rear
RF Input (Antenna): Air/ Cable/ 2in1 Air+Cable
Scart : CVBS in&out / RGB / S-VIDEO No
CINCH video in / out（AV1） No
CINCH audio in / out (No volumpe control on Audio
out/can be jack 3,5mm)
No
S-video in No
Component Video Input (YCrCb/YPrPb) No
Component Audio Input (YCrCb/YPrPb) No
VGA in / Audio L/R in / Jack audio in 3.5mm VGA + dia. 3.5mm for audio in
HDMI 2
DVI No
Audio input for DVI No
CINCH subwoofer out / Coaxial out (S/PDIF) YES(Coaxial )
Headphone output connector (mm) No
RS232 ( Y/N , VGA or DB9 port …) No
Card Readers No
USB slot (No/1.1/2)
1 (Software update, JPEG, MP3, RMVB)
Multimedia depends on license
DVB-CI (common interface) No
External power converter input No
Connectors -Side
HDMI 2
AV-IN 1
AV-OUT No
Component Video Input (YCrCb/YPrPb) 1
Component Audio Input (YCrCb/YPrPb) 1(Share with AV in)
Headphone output connector (dia.mm) 1（3.5mm)
Digital Audio out (S/PDIF) NO
USB slot (No/1.1/2)
1 (Software update, JPEG, MP3,RMVB)
Multimedia depends on license
DVB-CI (common interface) No
DLNA No
UI/RC
UI design (font/pixel, 2D/3D graphic engine..) Skyworth SOD Standard
RC Model TBD
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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)
AC Cable Length 1.8m
Audio Cord (Jack 3.5mm) ‘VGA Cord No
Wallmount frame Optional
Antenna Cable No
6 in 1( YPbPr & CVBS) cable adapter 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) Yes
Adaptor for VESA wallmount compatibility (accessory
ref)
Yes
Desktop Stand (included/optionnal + ref/No) included
Panel Tilt (Fowards/Backwards/Rotation) No
Swivel function desktop stand (yes/No) + motorized? No
Docking station (yes/No) No
Floor Stand (included/optionnal + ref/No) No
Glass shield (yes/No) No
Finish on Front Finish on side Finish on back Finish on stand number of colors on carton box 2
Brand logo Customer Inlet
Other logo No
External AC/DC Power with DC power cord (yes/No) No
Handle (yes/No) No
Detachable speaker (yes/No) No
Rating Label langages English
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