Related Manuals for BBK 28LEM-3002/T2C
Summary of Contents for BBK 28LEM-3002/T2C
- Page 1 SERVICE MANUAL MODEL : 28LEM-3002/T2C;32LEM-3002/T2C (SOLUTION MSD308C) CONTENTS SAFETY PRECAUTION SPECIFICATION BLOCK DIAGRAM CIRCUIT DIAGRAM FACTORY MODE&ADJUSTMENT UPGRADE SOFTWAR TROUBLE SHOOTING APPENDIX...
- Page 2 H IJKLM NOM+ PNQRMS + H OPMLTUMH KOP ./0 12 134567 2 0 890 :;< =1 9;8>=? 6@12 A67 < ;>= 0 810 9=2 < /=2 B? 69@:< 2 2 < /;< 2 B? =1=8< 12 ; 2 ? 0 1C2 6D 2 =7 =:< ? 0 :2 1/6:C 2 6? 2 B=? 168;7 2 0 8E @? 3F ./0 12 134567 2 0 890 :;<...
- Page 3 PRODUCT SPECIFICATION Model 28LEM-3002/T2C;32LEM-3002/T2C Solution MSD308C PAL BG/DK/ I SECAM BG/DK/L 48.25~863.25 MHz Picture I.F. 38.90MHz （BG,DK,I） 32.40MHz(DK,L) Sound I.F. ATV System 32.90MHz(I) Tuning System FS With PLL Tuner Band Standard system with hyper band Auto Channel Scanning Number Of Preset Channels...
- Page 4 RCA Audio (L/R) Jack - White/Red Audio In φ3.5 Stereo Jack VGA In D-sub 15 Pin VGA Connector Terminals USB2.0 Host optional COAX Output RCA Jack (Black) Audio Output φ3.5 Earphone Jack Output Power (1 KHz 10% THD ) 2.5W NICAM / STEREO Audio Bass...
- Page 5 BLOCK DIAGRAM PANEL Main Board ~110V-240V LED+/- (Soultion:MSD308C) Display Unit Power Supply Unit LVDS Back Light Unit (soultion:BIT3251) (12V 5V) External Input Coaxal PCMCIAI x 1 Main IC:MSD308C Earphone Demodulator ,Decoder HDMI x 2 Audio Buffer SCALER, ADC,Audio/Video Decoder …… IR Board VGA x 1 Amplifier...
- Page 6 VDDC1.15V 3.3V Normalfor DVD INTERFACE 1.15V Main DC-DC +5V_STANDBY VCC_VSENSE SB3.6V SB3.3V FB/0805 +5V_STANDBY 1.8A D11 SS34 10uH/SMT/power 5V_SW 5.1K 1% C235 C236 C237 R25 100R COMP 100K C128 22PF 10uF/0805 R260 680R 靠靠 DC-DC DVD_TX VRE=0.8V 0.1uF R261 R258 RT7237A DVD_TX 0.1uF...
- Page 7 CI & TS & Front End RGB & CVBS & USB U100-B PCMDATA[0]/CI_DATA[0] Close to MST IC PCMDATA[1]/CI_DATA[1] TS1_D0 with wide trace PCMDATA[2]/CI_DATA[2] TS1_D1 U100-E PCMDATA[3]/CI_DATA[3] TS1_D2 PCMDATA[4]/CI_DATA[4] TS1_D3 AA10 PCMDATA[5]/CI_DATA[5] TS1_D4 AA15 R139 47nF C101 RIN0 RIN0 PCMDATA[6]/CI_DATA[6] TS1_D5 VGA-RIN RIN0P R107...
- Page 8 HEADPHONE 12V_SW 3904 MSD39BT Power interface +5V_STANDBY 12V_OP 6.8K R169 3904 AGND VDDC 1V EARPHONE-OUTL C148 VDDC1.15V VDDC1.15V CA92 47uF/16V/short R327 C120 C106 C124 C146 C147 C150 C151 C153 C154 10uF/0805 2.2uF/0603 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF R185 R192 220R C129,C130 102->103...
- Page 9 1.5V Normal Power for DDR3 (MST IC) (DDR3 memory) (MST IC) (DDR3 memory) R304 A-TMCK A-MCK R305 AMS1117-ADJ A-TMCKB A-MCKB A-TMDQL6 A-MDQL6 A-TMDQL4 A-MDQL4 +1.5V_DDR R300 +1.5V_DDR R301 +1.5V_DDR 1K/1% 1K/1% RP300 A-MVREFCA RP312 A-MVREFDQ DDR3 +1.5V_DDR A-TMCKE A-MCKE +1.5V_DDR +1.5V_DDR A-TMDQL0 A-MDQL0...
- Page 10 HDMI Net to other page AVINPUT LVDS Connector Note: 靠靠 Panel 端端 HDMI1 PANELVCC PANELVCC PANELVCC HDMI1/5V PANELVCC CON3 C453 C454 DIP 30 2X15 HDMI1-RX2P DATA2+ HDMI1-RX2P 0.1uF 0.1uF R701 DATA2_SHIELD AGND AGND HDMI1-RX2N DATA2- HDMI1-RX2N R704 R533 HDMI1-RX1P DATA1+ AV1-LIN HDMI1-RX1P DATA1_SHIELD...
- Page 11 LED BACKLIGHT R176 SK310 47uH/3A FB/600R/1000mA/0603 ATV/DVB-T TUNER R170 3.3K R172 2.2nH 390R 3904 AGND ZENER-8.2V AGND AGND 3.3V_TU 5V_SW R158 LED+ 1.5K LED- TJ10 VCCRF BIT3251 82pF 4.7K 3.3nF 120pF 120pF TUNER AGC,Close TUNER 3P2.0 RFIN V_SYNC R807 100R RT10 V_IF_AGC IFAGC...
- Page 12 IR BOARD SCHEMATICS TV&DVD KEY BOARD SCHEMATICS...
- Page 13 FACTORY MODE AND ADJUSTMENT 1) How to enter service mode Press “Source” button on the remote control, then press”2580”, the service menu will be displayed. Press “2580” Source...
- Page 14 Service mode description Color Temp: select a color temperature mode that you want to adjust; R Gain: red gain for white balance adjusting; G Gain: green gain for white balance adjusting; B Gain: blue gain for white balance adjusting; R Offset: red offset for white balance adjusting; G Gain: green offset for white balance adjusting;...
- Page 15 FACTORY MODE AND ADJUSTMENT Main Board Software upgrade 1 Please burn the software to USB device. Noted please, software name have to be MERGE309B.bin. 2 Power on TV, and switch source to ATV. 3 Insert USB device to TV, then screen will display a message window to inform you upgrade TV or not.
- Page 16 Operator Power is Power supply repair flowchart Screen is Screen display repair flowchart ATV &DTV ATV &DTV mode mode is ok? repair flowchart Video AV,and HDMI mode repair mode is ok? flowchart PC mode repair mode is OK? flowchart Audio is Audio repair flowchart...
- Page 17 Power supply repair flowchart...
- Page 19 ATV&DTV mode repairflowchart...
- Page 20 AV,and HDMI1&2 mode repair flowchart...
- Page 21 PC mode repairflowchart Discolor...
- Page 22 Audio repair flowchart Check the Check the speaker 1.Insert the speaker wire and sound of both Wire & connector are connector again fully insert sides speakers 1.Confirm the volume is Setting at 20 2.Change the TV main board 3.Change the speaker or speaker wire Speaker noise 1.Change the TV main board...
- Page 23 USB Repair Flowchart START Enter USB mode Insert USB device Can’t find the Check the USB device is Fully Reinsert the device USB device Insert Check the USB device is normal Change the USB device Check the USB Signal Wire are Insert the wire again Fully Insert 1: Change the USB Sub board.
- Page 24 Interface Description 7 15 11 9 17 13 5 12 4 6 2 8 14 16 10 1 1 3 Description Description J2，J4 HDMI Input CN10 DVD Interface AV Input CON4 LVDS Interface VGA Input DVD power supply jack PC Audio Input CN12 Speaker Jack...
- Page 25 ★CN4(3PIN2.0) LED Driver Jack Definition Description LED- LED Driver Negative LED+ LED Driver Positive ★CON12(4PIN2.54) Speaker jack Definition Description Right Speaker Output Left Speaker Output ★ CN104:(5PIN2.0） Key jack Definition Description Key 1 (ADC Input) Key 2 (ADC Input) VCC5V ★CN10: (7PIN2.0) DVD INTERFACE Definition...
- Page 26 ★CN2: (5PIN2.0) DVD Power jack Definition Description DVD 5V Power Supply DVD 5V Power Supply ★CN6: IR&LED jack Definition Description Remote Receiver LED-G Green Indicator LED-R Red Indicator Power Supply ★DP2: (2PIN3.94mm) AC Power Input Definition Description Internal AC220V Power Supply Internal AC220V Power Supply ★J22: (4PIN2.0) Definition Description...
- Page 27 ★C0N4: LVDS Interface Definition Description LCD-VDD Power for Panel LCD-VDD Power for Panel LCD-VDD Power for Panel EDA3+ LVDS EVEN3+ Signal EDA3- LVDS EVEN3+ Signal ECK+ LVDS EVEN Clock + Signal ECK- LVDS EVEN Clock - Signal EDA2+ LVDS EVEN2 + Signal EDA2- LVDS EVEN2 - Signal EDA1+...
Need help?
Do you have a question about the 28LEM-3002/T2C and is the answer not in the manual?
Questions and answers