Zenith HDR230, Service Manual

Page 1: ...VN006M Model Line A Product Year 2003 Summary 1 Exploded View 2 Electrical 3 Parts List 4 Published September 2003 by Technical Publications Zenith Electronics Corporation 201 James Record Road Huntsv...

Page 2: ...1 1 SECTION 1 SUMMARY CONTENTS OVERVIEW 1 2 PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 SPECIFICATIONS 1 5 LOCATION OF CUSTOMER CONTROLS 1 6...

Page 3: ...to PVR section and HD 1 MPEG Decoder supports MP HL by using HD 1 and uses an external AC 3 Decoder PVR section stores only necessary data of TP data from the digital TV signal into HDD via IDE I F c...

Page 4: ...solder splashes or sharp solder points Be certain to remove all loose foreign par ticles 4 Check for physical evidence of damage or deterioration to parts and compo nents for frayed leads or damaged i...

Page 5: ...than 1M ohm Note 1 Accessible Conductive Parts include Metal panels Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easi...

Page 6: ...nnectors 480i Composite Digital Audio Output Coaxial Optical Dolby AC 3 output Analog Audio Output Audio Out 2 Fixed Output Level or Variable Output Level Authorized Service Port 9 pin Serial Port 1 H...

Page 7: ...DEO OUT YPbPr OUT AUTHORIZED SERVICE ONLY ANT IN S VIDEO OUT AUDIO OUT Left Right RGB OUT LOCATION OF CUSTOMER CONTROLS Remote Control Sensor Standby indicator Display format indicator Record indicato...

Page 8: ...ND TIMESHIFT Component Control Buttons Mode indicator TV INPUT POWER SELECT Arrow Buttons SELECT PAUSE PLAY SLOW FF REW EXIT MENU CC SIGNAL GUIDE RESERVED REC PROGRAM LIST REPEAT RATIO SURF INFO MUTE...

Page 9: ...2 1 SECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 2 1 Cabinet and Main Frame Section 2 2 2 Packing Accessory Section 2 3...

Page 10: ...ame Section 463 280 260 A42 A49 A46 A47A A44 300 250 320 468 468 463 463 463 464 463 463 464 457 465 466 452 A43 A47 452 463 A 5 4 3 2 1 B C D NOTE Refer to SECTION 4 REPLACEMENT PARTS LIST in order t...

Page 11: ...2 3 2 Packing Accessory Section 808 BATTERY REMOCON INSTRUCTION ASSEMBLY PACKING RF BAG CABLE CABLE CABLE CABLE PACKING LF BOX CARTON 806 804 803 811 812 820 801 900 802 803...

Page 12: ...GRAM 3 44 4 VIDEO BLOCK DIAGRAM 3 46 5 VIDEO PLL BLOCK DIAGRAM 3 48 6 AUDIO BLOCK DIAGRAM 3 50 7 TUNER VSB MICOM BLOCK DIAGRAM 3 52 8 PVR BLOCK DIAGRAM 3 54 7 CIRCUIT DIAGRAMS 3 56 1 POWER CIRCUIT DIA...

Page 13: ...5 5V 5 V GND GND 12V KEY 1 KEY 2 KEY 3 Live 5V IR In Full LED RSV LED REC LED 1080i LED FRONT LED Power LED GND Power Switch Board GND Power On Key Control Signals DATA 0 15 16 13 GND 40 Total 80 Line...

Page 14: ...eraTerm screen Preparation for S W Up data is completed message is displayed on the screen Select Send file from File menu of TeraTerm and select the file for Up data At this time select binary from O...

Page 15: ...3 08 System Info Processor 405GP PVR 40110145 Processor speed 200 MHz PLB speed 100 MHz OPB speed 33 MHz Ext Bus speed 33 MHz PCI Bus speed 33 MHz Sync Amount of SDRAM 32 MBytes Internal PCI arbiter e...

Page 16: ...t OK 32MB Flash Memory Test Start Flash Memory Test OK HD1 Test OK Audio Decoder Test OK HD1 DMA Test OK IIC EEPROM Test OK VSB Test OK TDA7440 Test OK SAA7120 Test OK Tuner IIC Test OK PDR Pro Test O...

Page 17: ...Tuner Test OK 11 PDR PRO Test OK 12 IDE Device Test OK 13 HDD Read Write Test OK 14 Front Test OK System test is passed successfully Screen shot during Test Display Error when any error is occurred At...

Page 18: ...sound output cable at the rear is correctly connected Volume by the remote control for the variable sound Check whether the battery is correctly inserted into the remote control Check whether the exte...

Page 19: ...IC101 PIN3 Are the D121 normal Does about 2 5V appear to IC103 PIN1 Is the D125 D126 normal Is the D123 D124 normal Replace the F101 Use the same Fuse Replace the BD101 Replace the TH01 Is the D102 no...

Page 20: ...in1 Check or Replace the IC155 IC156 Check or Replace the D123 D124 NO Check the com pin PWR CTL signal NO YES YES YES 4 No 12V NO 12V Is there about 14V at the IC157 IC158 Pin1 Is there about 4 5 5V...

Page 21: ...at 3 pin of CPU power IC155 Check whether the clock of 33 33MHz is generated at 7 pin of IC102 Clock Generator J101 DIP Switch Check Setting Check whether 4 pin of IC103 Reset Driver is high Check the...

Page 22: ...C152 5 signals No Pb signal Check whether there exists Q116 Base and IC152 10 signals Check the direction of IC152 component Check IC152 4 9V IC152 11 ground Check whether L122 terminal is 9V Check wh...

Page 23: ...there exists Q116 Base and IC151 10 signals Check IC151 and IC152 direction Check IC151 4 9V IC151 11 ground Check the direction of IC162 Check IC162 20 3 3V Check IC162 10 ground Check Hsync Check J...

Page 24: ...711 L711 R725 Q708 terminal C_OUT signal Check whether L708 has bad soldering Check whether L708 6 8uH has bad soldering Check whether Q704 base and Q705 base are Low 0V Mute Off Check whether the fro...

Page 25: ...to IC127 36 Pin Check whether data and clock are supplied to Audio DAC IC128 2 4 5 Pin Check whether 9V input is supplied to OP AMP IC125 126 131 132 8 Pin Check whether TR Q104 and Q1055 2 pin are Lo...

Page 26: ...at each part by referring to the block diagram Did you select the channel on air Check the clock by referring to VSB section of 3 4 Wiring diagram and Waveform See Video of 3 3 Troubleshooting guide...

Page 27: ...Check HDD Cable and HDD Power Cable connection Check PCI Clock Check 33 33MHz output at IC102 8 Pin Check IDSEL Check whether IC140 16 Pin is high at Configuration cycle Error code 125 HDD Jumper Chec...

Page 28: ......

Page 29: ...C209 3 23 0 3 22 0 C210 2 44 0 2 44 0 C213 2 44 0 2 44 0 C226 1 68 0 1 68 0 C254 9 04 0 9 04 0 C269 9 04 0 9 04 0 C272 9 04 0 9 04 0 C283 4 95 0 4 95 0 C293 9 04 0 9 04 0 C295 4 95 0 4 95 0 C297 4 54...

Page 30: ...0 3 21 0 C441 12 25 0 12 25 0 C443 9 05 0 9 03 0 C497 2 5 0 2 497 0 C505 9 03 0 9 03 0 C510 9 02 0 9 02 0 C704 2 41 0 2 41 0 47uF C278 4 59 4 49 4 49 4 57 C279 4 59 4 49 4 49 4 57 C301 8 74 0 8 74 0 C...

Page 31: ...17 C453 2 26 0 98 2 24 1 16 C471 4 53 0 4 53 0 2 C472 4 53 0 4 53 1 3 C473 4 53 0 4 53 0 3 C474 4 53 0 4 53 0 C475 4 53 0 4 53 0 C476 4 53 0 4 53 0 C741 1 748 0 1 748 0 C742 3 43 0 3 431 0 C743 1 796...

Page 32: ...125 2 77 0 2 77 0 D126 0 2 77 0 2 77 D127 2 77 0 2 77 0 D128 0 11 0 0 11 0 D129 2 77 0 2 77 0 D131 0 11 0 0 11 0 D132 1 64 0 1 64 0 D133 0 718 0 0 71 0 D134 2 77 3 22 D135 2 77 3 22 D136 2 77 3 22 D13...

Page 33: ...0 81 1 47 0 Q710 0 8 1 52 0 0 8 1 52 0 Q711 0 81 1 59 0 0 81 1 59 0 KTC3875 Q108 0 0 003 0 001 0 0 025 0 Q109 0 0 003 0 001 0 0 015 0 Q110 0 0 003 0 001 0 0 025 0 Q111 0 0 003 0 001 0 0 012 0 BF799W Q...

Page 34: ......

Page 35: ...I2C Controller PCF8584 A SYS_RESET_2 SYS_RESET_3 KIA7029 GND RESET RESET_In SYS_RESET_1 VCC AC 3 Decode r STi4600 Audio DAC CS4340 PDR Pro CPLD L_5V 10uF KIA7042 GND RESET VCC MiCOM M37272 MiCOM_RESE...

Page 36: ...2 Power_On GND 12V GND 12V GND GND 5V Regulator 7809 Regulator 7809 Tuner TDPC H901P PDR Pro LGDT7101 Volume Cont TDA7440 IDE Controller Sil0649 SAW Filter RF TR Down Converter UPC2798 Digital Encode...

Page 37: ......

Page 38: ...3 17 3 18 4 WAVEFORMS 1 DIGITAL SYSTEM CLOCK GENERATOR PART 1 2 3...

Page 39: ...3 19 3 20 2 DIGITAL SYSTEM SYSTEM MEMORY PART 1 2 3...

Page 40: ...3 21 3 22 3 VIDEO PLL PART 1 2...

Page 41: ...3 23 3 24 4 VIDEO OUTPUT CONNECTOR PART 1 2 3 BMK800 BMK800 BMK800 33PF 33PF 33PF...

Page 42: ...3 25 3 26 5 AUDIO PART 1 3 4 2 Q712 KRA102S R774 R775 22 Q713 DGND 3 K7 CA_SPDIF_MUTE STI4600_RESET...

Page 43: ...3 27 3 28 6 PVR CLOCK PART 1 2 3...

Page 44: ...3 29 3 30 7 VSB VSB DECODER PART 1...

Page 45: ...3 31 3 32 8 VSB DOWN CONVERTER PART 1...

Page 46: ...3 33 3 34 9 MICOM DOWN CONVERTER PART 1...

Page 47: ......

Page 48: ...em CPLD Volume Controller RS 232C Driver Control GPIO Digital Audio SPDIF YPbPr or RGB ITU R BT 656 External PLL VCXO Glue Logic Ethernet I F HDD Flash 8MB MiCOM IR In Video Type S W Control GPIO Spli...

Page 49: ...4V S W BLOCK Q151 R160 R161 R162 Q152 R152 R153 C157 5V REG S W BLOCK IC151 R151 C151 2 4 7 8 10 11 12 13 14 15 16 17 18 D125 D126 C128 C126 L122 C130 D123 D124 C125 C126 L123 C127 D121 C122 L121 C12...

Page 50: ...e On chip Peripheral BUS OPB UART I2C GPIO Timers I OCM D OCM JTAG Trace 50MHz Arb Clock Control Power Magmnt Code Decompression UART 16K I C 8K D C MMU DCU ICU PPC405GP CPU Core MII PPC405GP 456 PBGA...

Page 51: ...31 A_Data 0 63 B_Data 0 31 B_Address 0 10 B_Address 11 B_Data 0 63 2M x 32 4 bank Address 0 10 Data 0 31 BA0 BA1 DQM 0 3 VCC GND CS WE CAS RAS CLK B_CS B_ WE B_ CAS B_ RAS B_CLK A_Data 32 63 B_Data 32...

Page 52: ...ol Output Buffer Clock Buffer Clock Synthesis Control Output Buffer Output Buffer ICS501 Clock OSC PLL Clock Multiplayer ROM Output Buffer 27MHz AC 3 Decoder Clock 74 175MHz or 81MHz 27MHz 74 175MHz o...

Page 53: ...RCLK PCM_OUT0 Address Data PES0_REQ REQ IE958_OUT SPDIF Out RCA Jack PCMCLK Per_Data 0 7 Per_Addr 0 4 Per_Addr 20 23 DS8921 422 Driver 35101 Trans CS4340 Audio DAC TDA7440D Volume Controller MC33078 O...

Page 54: ...T3102 TP out I2C_C VSB_Reset Lock_LED 2 5V 3 3V 5V X Tal 38MH z VSB TP out Error_LED DTV Tuner TDPC H901P I2C_A 5V L_5V RF Spliter USP NT 012 MiCOM M37272 8MHz I2C_C Front I F Conn Regulator 7809 Regu...

Page 55: ...nals from VSB part ADR_B 0 10 PCI IDE Controller PCI0649 PVR CPLD EPM3128A ADR_A 0 10 DATA_B 0 31 DATA_A 0 31 TP_OUT 0 7 Control Signals to HD 1 PCI I F Signals From CPU TP_OUT 0 7 Control Signals UP...

Page 56: ...or NOTES electricial shock 03 3 15 HDR230 100 330 F No power BD101 TH01 are defective Switching Error IC102 IC103 are defective Switching Error IC101 is defective 5 4V 5 0V 5 0VA no power D121 is def...

Page 57: ...3 58 3 59 2 SYSTEM CIRCUIT DIAGRAM 1 SMEM_DATA S_MEM ADR PER_DATA PER_ADDR CPU CLOCK PCI BUS 03 3 15 HDR230...

Page 58: ...3 60 3 61 3 SYSTEM CIRCUIT DIAGRAM 2 PER DATA PER ADR TO CPU P8 P9 P4 03 3 15 HDR230 PC_MUTE 11 B5 CA_SPDIF_MUTE 7 B5 SYS_RESET_2 3 J2 5 B5 F2 STI4600_RESET 7 A4...

Page 59: ...3 62 3 63 4 SYSTEM CIRCUIT DIAGRAM 3 PER ADDR CLOCK P3 S MEM DATA S MEM ADDR PER DATA 03 3 15 HDR230...

Page 60: ...3 64 3 65 5 VIDEO CIRCUIT DIAGRAM 1 PES CLOCK PER ADDR PER DATA Valid TP DATA CLK 03 3 15 HDR230 27...

Page 61: ...6 VIDEO CIRCUIT DIAGRAM 2 PER ADDR VSB PDR TP DATA CLK VALID TP DATA CLK VALID 03 3 15 HDR230 3 66 3 67...

Page 62: ...3 68 3 69 7 AUDIO CIRCUIT DIAGRAM P11 PES P5 DIGITAL AUDIO ANALOG AUDIO PER DATA PER ADDR P6 03 3 15 HDR230 Q712 KRA102S R774 R775 22 Q713 DGND 3 K7 CA_SPDIF_MUTE STI4600_RESET...

Page 63: ...3 70 3 71 8 PVR CIRCUIT DIAGRAM 1 PDR DATA CLOCK VALID PCI CLOCK PCI BUS P2 VSBIN TP DATA CLOCK VALID CLOCK SOURCE2 03 3 15 HDR230...

Page 64: ...3 72 3 73 9 PVR CIRCUIT DIAGRAM 2 CLOCK P3 PCI BUS P 2 VSB TP Clock valid data PDR TP Clock valid data VSBN TP Clock valid data 03 3 15 HDR230...

Page 65: ...3 74 3 75 10 VSB CIRCUIT DIAGRAM IF VSB TP Data clock error valid 03 3 15 HDR230 DNS...

Page 66: ...IDEO OUTPUT CIRCUIT DIAGRAM D RGB HS D RGB HS Y B Pb P Pr G FROM P 7 CVBS OUT Y OUT C OUT 03 3 15 HDR230 BMK800 BMK800 BMK800 BMK800 BMK800 BMK800 BMK800 BMK800 33PF 33PF 33PF 33PF 33PF C768 DNS R772...

Page 67: ...3 78 3 79 12 POWER IF COM VIDEO CIRCUIT DIAGRAM CVBS OUT Y OUT C OUT 03 3 15 HDR230...

Page 68: ...3 80 3 81 13 FRONT CIRCUIT DIAGRAM RIGHT LEFT 03 3 15 HDR230...

Page 69: ...3 82 3 83 8 PRINTED CIRCUIT DIAGRAMS 1 DIGITAL MAIN PRINTED CIRCUIT DIAGRAMS TOP...

Page 70: ...3 84 3 85 2 DIGITAL MAIN PRINTED CIRCUIT DIAGRAMS BOTTOM...

Page 71: ...3 86 3 87 3 KEY LEFT PRINTED CIRCUIT DIAGRAM 4 KEY RIGHT PRINTED CIRCUIT DIAGRAM LOCATION GUIDE...

Page 72: ...3 88 3 89 5 POWER PRINTED CIRCUIT DIAGRAM LOCATION GUIDDE...

Page 73: ...SCREW 452 353 051A O SCREW SPECIAL 457 353 046N O SCREW DRAWING SPECIAL 3X8 BK 463 353 051G O SCREW DRAWING 2 D3 0 L8 0 MSWR3 FN TB ROUN 464 353 051E O SCREW SPECIAL 3X12 465 353 046K O SCREW SPECIAL...

Page 74: ...B 5YP 1608 R TP C116 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C117 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C118 0CH1104K512 O CAPACI...

Page 75: ...OR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C160 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C161 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP...

Page 76: ...B 5YP 1608 R TP C221 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C222 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C223 0CH1104K512 O CAPACI...

Page 77: ...0V 10 B 5YP 1608 R TP C285 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C286 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C287 0CH1104K512 O C...

Page 78: ...5YP 1608 R TP C342 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C343 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C344 0CH1104K512 O CAPACITO...

Page 79: ...0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C400 0CH1103K562 O CAPACITOR FIXED CERAMIC Temp c 0 01UF 50V 10 X7R X 1608 R T C404 0CH1104K512 O CAPACITOR FIXED CERAMIC Tem...

Page 80: ...85STD CYL R TP C485 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C486 0CH1104K512 O CAPACITOR FIXED CERAMIC Temp c 0 1UF 50V 10 B 5YP 1608 R TP C487 0CE107SF6DC O CAPACIT...

Page 81: ...6X0 8 R TP C717 0CH1103K562 O CAPACITOR FIXED CERAMIC Temp c 0 01UF 50V 10 X7R X 1608 R T C718 0CH1103K562 O CAPACITOR FIXED CERAMIC Temp c 0 01UF 50V 10 X7R X 1608 R T C719 0CH1103K562 O CAPACITOR F...

Page 82: ...V D106 0DR050008AA O DIODE RECTIFIERS SD05 TC R TP SEMTECH SOD323 5V D107 0DR050008AA O DIODE RECTIFIERS SD05 TC R TP SEMTECH SOD323 5V D108 0DR050008AA O DIODE RECTIFIERS SD05 TC R TP SEMTECH SOD323...

Page 83: ...5MTCX FAIRCHILD 20P TSO IC113 0ICTMLG002D O IC CUSTOMIZED LGDT1101D LG IC 480 BLACK SBGA IC114 0IMMRSS037D O IC MEMORIES K4S643232F TC L50 SAMSUNG ELEC IC115 0IMMRSS037D O IC MEMORIES K4S643232F TC L5...

Page 84: ...TER CIRC EMC HH 1M2012 121JT CERATECH TP 2 B101 6200HJC106A O FILTER CIRC EMC HH 1M2012 121JT CERATECH TP 2 B102 6200HJC106A O FILTER CIRC EMC HH 1M2012 121JT CERATECH TP 2 B103 6200HJC106A O FILTER C...

Page 85: ...CIRC EMC EMC BMK800 50V 0 2A NIIGATA R IC144 6200QL3001G O FILTER CIRC SAW X6965D EPCOS ST 44 06MHZ IC147 6200QL3001F O FILTER CIRC SAW X6931D EPCOS ST 44 0MHZ L100 0LCCE00004D O INDUCTOR CHIP 6 8UH...

Page 86: ...P BL KTC1815 KEC Q702 0TR102009AA O TRANSISTOR CHIP KRC102S T1 NB 10 10 KEC Q703 0TR101009AC O TRANSISTOR KRC101S T1 NA 4 7 4 7 CHIP KEC Q704 0TR101009AC O TRANSISTOR KRC101S T1 NA 4 7 4 7 CHIP KEC Q7...

Page 87: ...RESISTOR DRAWING 51 OHM 1 16 W 3216 5 R TP8 AR137 0RRZVTA001G O RESISTOR DRAWING 51 OHM 1 16 W 3216 5 R TP8 AR138 0RRZVTA001G O RESISTOR DRAWING 51 OHM 1 16 W 3216 5 R TP8 AR139 0RRZVTA001G O RESISTOR...

Page 88: ...H2201C622 O RESISTOR METAL GLAZED CHIP 2 2K OHM 1 16 W 1608 5 00 D R179 0RH2201C622 O RESISTOR METAL GLAZED CHIP 2 2K OHM 1 16 W 1608 5 00 D R180 0RH1002C622 O RESISTOR METAL GLAZED CHIP 10K OHM 1 16...

Page 89: ...8 5 00 D R263 0RH1200C622 O RESISTOR METAL GLAZED CHIP 120 OHM 1 16 W 1608 5 00 D R264 0RH1200C622 O RESISTOR METAL GLAZED CHIP 120 OHM 1 16 W 1608 5 00 D R266 0RH0272C622 O RESISTOR METAL GLAZED CHIP...

Page 90: ...W 1608 5 00 D R342 0RH4701C622 O RESISTOR METAL GLAZED CHIP 4 7K OHM 1 16 W 1608 5 00 D R343 0RH4701C622 O RESISTOR METAL GLAZED CHIP 4 7K OHM 1 16 W 1608 5 00 D R352 0RH3300C622 O RESISTOR METAL GLA...

Page 91: ...M 1 16 W 1608 5 00 D R427 0RJ3601C677 O RESISTOR METAL GLAZED CHIP 3 6K OHM 1 16 W 5 1608 R TP R428 0RH1201C622 O RESISTOR METAL GLAZED CHIP 1 2K OHM 1 16 W 1608 5 00 D R429 0RH1001C622 O RESISTOR MET...

Page 92: ...OHM 1 16 W 1608 1 00 D R506 0RH7500C622 O RESISTOR METAL GLAZED CHIP 750 OHM 1 16 W 1608 5 00 D R507 0RH4700C622 O RESISTOR METAL GLAZED CHIP 470 OHM 1 16 W 1608 5 00 D R508 0RH4701C622 O RESISTOR MET...

Page 93: ...1 16 W 1608 5 00 D R754 0RH1001C622 O RESISTOR METAL GLAZED CHIP 1K OHM 1 16 W 1608 5 00 D R755 0RH1201C622 O RESISTOR METAL GLAZED CHIP 1 2K OHM 1 16 W 1608 5 00 D R756 0RH1201C622 O RESISTOR METAL G...

Page 94: ...KQNQED ALPS DC 12 V 50 MA TA SW801 556 282C O SWITCH TACT SKQNQED ALPS DC 12 V 50 MA TA SW802 556 282C O SWITCH TACT SKQNQED ALPS DC 12 V 50 MA TA SW803 556 282C O SWITCH TACT SKQNQED ALPS DC 12 V 50...