Casio LK-90TV Page 12 Service Manual Download | Manualshive

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M474-LED1 PCB

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M474-LED2 PCB

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Summary of Contents for LK-90TV

Page 1: ...ELECTRONIC KEYBOARD LK 90TV JUN 2004 LK 90TV Ver 1 Jun 2005 INDEX...

Page 2: ...CONTENTS Specifications 1 Block Diagram 3 Circuit Description 4 Printed Circuit Board 6 Disassembly 13 Diagnostic Program 19 Schematic Diagrams 22 Exploded View 31 Parts List 32...

Page 3: ...Scoring 3 Phrase Practice Voice Fingering Guide On Off Song Bank Piano Bank Number of Tunes 100 Song Bank Sing Along 65 Piano Bank 35 Controllers PLAY STOP PAUSE FF REW LEFT RIGHT REPEAT User Songs N...

Page 4: ...AX Power Jack 9V DC Power Supply 2 way Batteries 6 AA size batteries Battery Life Approximately 2 5 hours continuous operation on alkaline batteries AC Adaptor AD 5 Auto Power Off Turns power off appr...

Page 5: ...KC0 7 MD0 15 RAM 1MB CY62126DV30LL55ZI IC18 Monitor Output Controller IC15 SPG200A HL091 IC43 MR27V802F Keyboard LED Controller UPD65881GK 1019 ETA IC27 VD5 5 3V VE5 5V VA5 5 2V VC9 9 0V VCP 9 0V Pow...

Page 6: ...1 F4 1 G41 SI3 C42 C4 2 D42 D4 2 E42 F42 F4 2 G42 FI4 G4 1 A41 A4 1 B41 C51 C5 1 D51 D5 1 SI4 G4 2 A42 A4 2 B42 C52 C5 2 D52 D5 2 FI5 E51 F51 F5 1 G51 G5 1 A51 A5 1 B51 SI5 E52 F52 F5 2 G52 G5 2 A52 A...

Page 7: ...TEMPO PAUSE SING ALONG MODE NOMAL MODE CASIO CHORD MODE FINGERED MODE FULL RANGE CHORD SWO0 SWO1 SWO2 SWO3 SWO4 SWO5 SWO6 SWI0 SWI1 SWI2 SWI3 SWI4 SWI5 SWI6 SWI7 LED MATRIX DATA ACCESS RHYTHM ST SP SO...

Page 8: ...6 PRINTED CIRCUIT BOARDS M649 MAIN PCB Bottom View Top View...

Page 9: ...7 M649 SUB1 PCB M649 SUB2 PCB Bottom View Top View Bottom View Top View...

Page 10: ...8 M649 CONSOLE PCB Top View Bottom View...

Page 11: ...p View Top View Bottom View Top View Bottom View Top View Bottom View Top View Bottom View Top View Bottom View M649 LCD PCB Bottom View Top View M649 CONSOLE3 PCB M649 CONSOLE4 PCB M649 CONSOLE5 PCB...

Page 12: ...10 M474 LED1 PCB Top View Bottom View M474 LED2 PCB Top View Bottom View...

Page 13: ...11 CSM446 LED4 PCB Top View Bottom View Top View Bottom View CSM446 LED5 PCB CSM446 LED3 PCB Top View Bottom View...

Page 14: ...12 M6111T KEY1 PCB M6111T KEY2 PCB Top View Bottom View Top View Bottom View...

Page 15: ...9 screws on the bottom of the product Note Make sure to fix the screws with the arrow marks d in the below figure only 4 Remove the upper case 5 Unsolder six connectors Connector JJ2 To M649 MAA2 PCB...

Page 16: ...CB Connector CN15 To M649 MAA3 PCB 7 Unsolder two connectors and then remove the M649 MA1 PCB Connector JX2 To M649 CNA1 PCB 8 Unsolder two connectors and then remove seven lead wires 9 Remove four sc...

Page 17: ...he M649 CNA6 PCB M649 CNA6 PCB M649 MAA3 PCB Connectors 12 Remove two screws and the M649 CNA5 PCB 13 Remove three screws and the M649 CNA2 PCB M649 CNA2 PCB M649 CNA5 PCB 14 Remove 2 screws 15 Remove...

Page 18: ...the right order when assembling 1 3 2 6 4 5 19 Remove the rubber keys 20 Remove eight screws and two speakers Note Store the lead wire in the guide rail when assembling 21 Remove eight screws and two...

Page 19: ...B 24 Remove seven screws and unsolder one connector JE and then remove the M474 LD2M PCB Connector JF To CSM446 LD4M PCB Connector JG To CSM446 LD3M PCB Connector JE To CSM446 LD5M PCB 25 Remove three...

Page 20: ...18 28 Remove 10 screws and the M6111T KY1M PCB 29 Remove nine screws and the M6111T KY2M PCB 30 Remove five rubber keys on the keyboard Note The length of this one rubber key is different...

Page 21: ...ck 1 Press 0 button 00 Wait for confirmation sound 2 Slide switches or press buttons in the order from No 01 to No 2F BUTTON NO NOTE The button numbers are written in hexadecimal numerals 3 Press the...

Page 22: ...t and left speakers 2 Press the 5 button MID When standing in the center the tester hears the medium test sound in an equal volume from both right and left speakers 3 Press the 6 button MAX When stand...

Page 23: ...7 C2 D2 F2 G2 A2 3 C3 D3 E3 F3 G3 A3 B3 8 C3 D3 F3 G3 A3 4 C4 D4 E4 F4 G4 A4 B4 9 C4 D4 F4 G4 A4 5 C5 D5 E5 F5 G5 A5 B5 C6 10 C5 D5 F5 G5 A5 11 Console LED check 1 Press the SPEAK button Keyboard LED...

Page 24: ...22 SCHEMATIC DIAGRAMS M649 MAIN PCB 1 2...

Page 25: ...23 M649 MAIN PCB 2 2...

Page 26: ...24 M649 SUB PCB 1 2...

Page 27: ...25 M649 SUB PCB 2 2...

Page 28: ...26 M649 CONSOLE PCB...

Page 29: ...27 M649 LCD PCB...

Page 30: ...28 CSM446 LED PCBs...

Page 31: ...29 M6111T KEY1 PCB...

Page 32: ...30 M6111T KEY2 PCB...

Page 33: ...31 EXPLODED VIEW 22 20 34 1 26 25 20 3 18 16 11 6 10 5 2 17 4 24 7 8 9 15 23 27 28 29 32 14 12 13 30 31 R 2 R 1 R 3 19 21 33...

Page 34: ...our spare parts department if you need these parts for refurbish 1 Prices and specifications are subject to change with out prior notice 2 As for spare parts order and supply refer to the GUIDEBOOK fo...

Page 35: ...CONNECTOR JY 6316 01 070 1 AD X L1 10057360 COIL R2318 RB53 856396 1 BB X L2 10056228 COIL R2318 RB53 856397 1 AB X Q8 10113773 TRANSISTOR KTA1046Y 1 AC X Q7 10085192 TRANSISTOR KTC2026Y 1 AC X D3 4 8...

Page 36: ...1 1 AE C N 24 10161578 RUBBER KEY B RJM503976 001V01 1 AC C N 25 10161579 RUBBER KEY C RJM503977 001V01 1 AB C N 26 10161580 RUBBER KEY D RJM503978 001V01 1 AH C N 27 10161581 RUBBER KEY E RJM503979 0...

Page 37: ...CASIO COMPUTER CO LTD Overseas Service Division 6 2 Hon machi 1 Chome Shibuya ku Tokyo 151 8543 Japan Ver 1 Jun 2005 Correction of the EXPLODED VIEW P31...

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