Sanyo LCD-27XL2 Service Manual
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Sanyo LCD-27XL2 Service Manual
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ASSY, PWB, SIGNAL X121 VIF1 IC101 (TDA9886) IF-PLL DEMODULATOR ASSY, PWB, SCAL KLP1 (27") KLP2 (32") A101 TUNER 1 2 17 TV AV1 VIDEO IN (SCALER/LVDS) IF 27":90~99 32":77~86 LCD PANEL (WXGA) IC4001 (ADE3800) ANALOG LCD DISPLAY ENGINE 33/34/38/39/43/44 SW3951~ SW3955 K19J K8J POWER KEY IN 146 KEY IN 145 SAW FILTER VIF2 ASSY,PWB, CONTROL A3901 RC RECEIVER D3901 LED AV1 TERMINAL (K1001) 12 IC1224 VIDEO SW AV2 VIDEO IN COMPISITE VIDEO IN 16 AV2 SCART (K1002) 7 AV3 VIDEO IN 153/154/155 AV4 VIDEO IN SELECTED VIDEO OUT ANALOG PB/B, PR/R, Y/G OUTPUT COMPISITE VIDEO/Y IN 20 5 IC801 (STV3600) 1 RC-IN 132 19 S-VIDEO-C IN 4 3 VIDEO MONITOR OUT 3 MAIN CPU/CAPTION DECODER 117~124 SCL 5 1 20 6 SDA R IN (AV2) 1 3 R/CR 16 G IN 14 KD 15 26 CVBS IN C IN Y IN Analog Input Stage 51 52 23 24 G IN 53 B/CB IN I C Interface 2 R/S-VIDEO C IN 15 Chassis Block Diagrams (Video Signal Lines) -4IC802 MEMORY IC1801 SUB CPU 5 K8D 63 3 2 B IN (AV2) 8 6 B/CB CB IN (AV5) 9 27 14 29 IC1251 RGB SW 12 Input SRC 19 22 18 17 R/CR IN System Clock generation G IN 11 CR IN (AV5) IC804 SDRAM IC803 SDRAM 7 B IN G/Y IN (AV2) IC2001 (STV2310) DIGITAL VIDEO DECODER IC805 FLASH MEMORY AV3 TERMINAL (K1003) COMPISITE VIDEO IN Luma Chroma Separator Standard Identifier & Chroma Demodulator PAL/NTSC/SECAM AV4 TERMINAL (K1004) COMPISITE VIDEO IN Soft Mixer RGB Insertion AV5 TERMINAL (K1006) Format Converter & Output Scaler Video Corection COMPONENT CR IN COMPONENT CB IN Synchronization & Monitoring Unit Output FIFO VBI Slicer Line-locked Output Pixel Clock Pin-19~28 COMPONENT Y IN DIGITAL Y, CB, CR OUTPUT X122 SIF1 23 24 8 TV AUDIO OUT SIF2 IC101 (TDA9886) IF-PLL DEMODULATOR ASSY, PWB, SIGNAL A101 TUNER SAW FILTER IF AV1 TERMINAL (K1001) 9 10 6 19 AUDIO R-OUT 9 29 24 14 15 AUDIO PROCESSOR/ STEREO SOUND DEMODULATOR/ 3D SURROUND HEADPHONE L-OUT AUDIO MONITOR OUT-L 18 29 19 23 L-IN R-IN 24 AUDIO MONITOR OUT-R 31 HEADPHONE R-OUT 2 27 R-OUT 28 1 AUDIO R-OUT 28 AUDIO L-OUT 1 AUDIO L-OUT 13 78 IC3501 (NJM2155) BBE/BASS EXPANDER IC001 (LA4919N) AUDIO AMP. KSPL 15/16 L-OUT SP901 AUDIO L-IN AUDIO R-IN AV2 SCART (K1002) 6 AUDIO L-IN KSPR SP902 24/25 R-OUT 2 AUDIO R-IN IC3451 (STV8216) 3 AUDIO MONITOR OUT-L 1 AUDIO MONITOR OUT-R Chassis Block Diagrams (Audio Signal Lines) -5IC1222 AUDIO SW AV3 L-IN 1 AV4 L-IN 3 L-OUT AV5 L-IN 4 TV -L 11 TV -R AV3 R-IN 13 R-OUT AV4 R-IN 14 AV5 R-IN 15 12 2 KP3 K36P3 TV OUT-L TV OUT-R 5 AUDIO MONITOR OUT (K1005) HEADPHONE JACK L-OUT K001 AV3 TERMINAL (K1003) AUDIO L-IN KIF AUDIO R-IN AV4 TERMINAL (K1004) IC3601 (CXA2104S) 2 1 11 K36IF AUDIO L-IN TV AUDIO-IN AUDIO R-IN MTS / SAP AV5 TERMINAL (K1007) ASSY, PWB, MTS AUDIO L-IN AUDIO R-IN IC Block Diagrams IC001 < AUDIO AMP. > LA4919N-E Headphone Block IC3501 < BBE/Bass Sound Processer > NJM2155M 28 HP OUT1 HP IN1 HP IN2 HP D.C HP Standby AMP Standby D.C DDL ON TIME IN2 PRE GND PRE VCC IN-VREF IN1 POWER GND 1 Ripple filter VG=6dB 24 Voltage Regulator VG=6dB Vcc IN-L HIL-L HOUT-L LOWIN-L LOWOUT-L 1 IN-R HIN-R HOUT-R LOWIN-R LOWOUT-R OUT-R VREF GIN GOUT LPIN LPOUT GND 2 3 4 5 6 7 8 9 10 11 12 13 Input amplifier 27 HP OUT2 Output A amplifier Nonlinear amplifier B 23 2 H/P Standby SW 26 POWER GND 25 OUT2- 22 3 4 BBE BBE 21 AMP. Standby SW Ripple filter 24 OUT2+ 20 5 Output amplifier Switching regulator Block H. L. S Switching Drive 23 SW GND OUT-L 19 6 22 SWB 18 7 Muting circuit used at power on A B C D *H. L. S Higher Level Signal Selector FILTER 21 SWE 17 BBE 8 20 SW OUT Intput amplifier Output amplifier stage REF amplifier Output C amplifier Control 16 Mach3 9 Headphone stage Input amplifier stage Switching regulator stage 19 VCC 18 17 16 OUT1+ PROCESS LO CONTOUR MACH3 Vcc Bias 15 10 Power TR stage 14 11 12 13 Nonlinear amplifier D 14 Output amplifier 15 OUT1- IC101 < IF-PLL Demodulator > TDA9886TSV4P cVAGC (pos) TOP TAGC VAGC VIF-PLL filter VPLL External reference signal or 4MHz crystal REF AFC 9 14 cAGC(neg) 16 cBL 19 15 21 TUNER AGC VIF-AGC RC VCO DIGITAL VCO CONTROL AFC DETEVTOR VIF2 VIF1 2 1 VIF-PLL SOUND TRAPS 4.5 to 6.5MHz 17 CVBS Video output: 2Vp-p (1.1vp-p without trap) SIF2 SIF1 24 23 SUPPLY SINGLE REFERENCE QSS MIXER INTERCARRIER MIXER AND AM DEMODULATOR MAD OUTPUT PORTS I2C-BUS TRANSCEIVER AUDIO PROCESSING AND SWITCHES 8 5 6 AUD Audio output DEEM de-emphasis network cAF cAF SIF AGC NARROW-BAND FM-PLL DEMODULATOR cAGC 20 Vp 18 AGND 13 N.C. 3 22 11 SCL 10 SDA 7 12 4 OP1 OP2 DGND SIOMAD FM-PLL FM-PLL filter Sound intercarrier output and MAD select -6- |


