mstar lt1902s free download

File name Service Manual(LT1902S, LT2202S).pdf

Service Manual (1906 2206) HDMI MST719 2009/10/13 - 1 - Contents 1. Precautions and Safety Notices...3 2. Specification...5 3. Function Control Description...10 4. Circuit Description...11 5. Adjusting Procedure...17 6. Trouble Shooting Flow Chart...23 7. Block Diagrams...26 2009/10/13 - 2 - 1. Precautions and Safety Notices Prior to using this service manual, please ensure that you have carefully followed all the procedures outlined in the user's manual for this product. (1) Read all of these instructions. (2) Save these instructions. (3) Follow all warnings and instructions a marked on the product. (4) Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners, use a damp cloth for cleaning. (5) Do not use this product near water. (6) Do not place this product on an unstable cart, stand or table. The product may fall, causing serious damage to the product. (7) Slots and openings in the cabinet and the back or bottom are provided for ventilation, to ensure reliable operation of the product and to protect it from overheating, those openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should not be placed in a built-in installation less proper ventilation is provided. (8) These products should be operated from the type of power source indicated on the marketing label. If you are not sure of the type of power available, consult your dealer or local power company. (9) This product is equipped with a 3-wire grounding type plug, a plug having a third (grounding) pin. This plug will only fit into a grounding-type power outlet. This is a safety feature, if you are unable to insert the plug into the outlet, contact your electrician to replace your obsolete outlet. Do not defeat the purpose of the grounding-type plug. (10) Do not allow anything to rest on the power cord. Do not locate this product where persons will walk on the cord. (11) If an extension cord is used with this product, make sure that the total of the ampere ratings on the product plugged into the extension cord to the waplugged into outlet does not exceed 15 ampere. (12) Never push objects of any kind into this product through cabinet slots as they may touch dangerous voltage points or short out parts that could result in a risk of fire or electric shock. Never spill liquid of any kind on the product.

File name ‘еҐ¬л ¤«п LT1902S, LT2202S.pdf

5 4 3 2 1 MST719 INPUT D AV_MODE FB SCART_VOUT AV_MODE FB PR PY PB S/D _Y S/D_C SCART_CVBS AV_CVBS CVBS/Y VGA_R VGA_G VGA_B VGA_VS VGA_HS TXD_SDA RXD_SCL VSEL AV_MODE FB PR PY PB S/D_Y S/D_C SCART_CVBS AV_CVBS CVBS/Y VGA_R VGA_G VGA_B VGA_VS VGA_HS TXD_SDA RXD_SCL VSEL DVDIR_EN DVD_AUTO DVD_ON/OFF PANEL_EN DVD_STB DVD_IR POW_OFF DVDIR_EN DVD_AUTO DVD_ON/OFF PANEL_EN DVD_STB DVD_IR POW_OFF D AMPLIFIER AUDIO DACM_R DACM_L PWD_MT SCART_VOUT SCART_RIN SCART_LIN INNER_RIN INNER_LIN AV_RIN AV_LIN SCART_ROUT SCART_LOUT PC_RIN PC_LIN PR PY PB S/D_Y S/D_C SCART_CVBS AV_CVBS CVBS/Y VGA_R VGA_G VGA_B VGA_VS VGA_HS TXD_SDA RXD_SCL VSEL AUDIO_MUTE DACM_R DACM_L PWD_MT AUDIO_MUTE DACM_R DACM_L PWD_MT SCART_RIN SCART_LIN INNER_RIN INNER_LIN AV_RIN AV_LIN SCART_ROUT SCART_LOUT SCART_RIN SCART_LIN I NNER_RIN INNER_LIN AV_RIN AV_LIN SCART_ROUT SCART_LOUT PC_RIN PC_LIN 07_POWERAMPLIFIER IF AF SDA SCL POWER IF AF SDA SCL PC_RIN PC_LIN 02_INPUT DVDIR_EN DVD_AUTO DVD_ON/OFF PANEL_EN DVD_STB DVD_IR POW_OFF RST_34XX C RST_34XX HDMI HDMI_RIN HDMI_LIN RST_34XX C HDMI_RIN HDMI_LIN 06_AUDIO HDMI_RIN HDMI_LIN HDMI_CEC HDMI_RXCHDMI_RXC+ RX0N RX0P RX1N RX1P RX2N RX2P HOTPLUG HDMI_SDA HDMI_SCL AUMCK AURCK AUSCK AUSD HDMI_CEC HDMI_RXCHDMI_RXC+ RX0N RX0P RX1N RX1P RX2N RX2P HOTPLUG HDMI_SDA HDMI_SCL AUMCK AURCK AUSCK AUSD HDMI_CEC HDMI_RXCHDMI_RXC+ RX0N RX0P RX1N RX1P RX2N RX2P HOTPLUG HDMI_SDA HDMI_SCL AUMCK AURCK AUSCK AUSD PHS PVS PDE PCLK PHS PVS PDE PCLK 09_POWER PANEL PHS PVS PDE PCLK RA[7:0] GA[7:0] BA[7:0] VBL_CTL RA[7:0] GA[7:0] BA[7:0] VBL_CTL BLK_ADJ RA[7:0] GA[7:0] BA[7:0] BLK_ON BLK_ADJ B 03_HDMI B TUNER CVBS_OUT TV_CVBS+ TV_CVBSIF AF TV_CVBS+ TV_CVBSSCART_VOUT CVBS_OUT TV_CVBS+ TV_CVBS- BLK_ADJ 05_PANEL IF AF SCART_VOUT SDA SCL SDA SCL AUDIO_MUTE SDA SCL AUDIO_MUTE 08_TUNER A A Title Size A3 5 4 3 2 CONFIDENTIAL 01_TOP Document Number H _ V 1 . 0 C V 7 1 9 Friday, August 08, 2008 1 3000 LongDong Road Shanghai,China (86) 021-68791101 Rev V1.0 Date: Sheet 1 of 9 5 4 3 2 1 J20 SCART L10 0 J15 1 1 R188 2 D 2 75 R193 1 2 75 R189 1 2 75 R190 1 D22 R187 2 D23 D21 21 SHIELD 20 V_IN 19 V_OUT 18 BLANKGND 17 VGND 16 BLANK 15 R DATAGND 14 13 RGND 12 DATA 11 G 10 CLKOUT 9 GGND 8 SWTCH 7 B 6 A_IN_L 5 BGND 4 AGND 3 A_OUT_L 2 A_IN_R 1 A_OUT_R 2 2 SCART_VOUT FB SCART_R C166 220p/nc SCART_VOUT 1 CVBS/C 1 2 C165 220p/nc SCART_CVBS 75 R182 SCART_CVBS 2 1 2 3 4 5 6 PH-6A 1 2 3 4 5 6 SCART_VOUT SCART_LOUT SCART_ROUT FB 1 D19 J23 AV3-8R4-5 L R C167 470n 1 2 C169 470n 1 2 C168 470n 1 2 R167 1 R160 1 R161 1 0/nc 2 0/nc 2 0/nc 2 J22 RCA-1 1 FERRITEBEAD0603 L9 PH-2A +5Vsb_IN D SCART_G R186 AUDIO/RGB/16:9 1 SCART_B SCART_LIN SCART_LOUT SCART_RIN SCART_ROUT 10k 2 SCART_LIN 75 6 5 4 3 SCART_R SCART_B SC_R SC_B SC_G PR PB PY 2 1 1 2 1 2 1 J14 2 2 R197 R196 4.7k 4.7k TXD_SDA RXD_SCL TXD_SDA RXD_SCL 2 AV_MODE 1 V SCART_LOUT SCART_RIN SCART_ROUT 3.3k D20 2SCART_G 1 2 C164 220p/nc 1