Tascam LA-MC1, Service Manual

Page 1: ...d Parts List MD CD1 38 11 Included Accessories MD CD1 43 12 Specification LA MC1 44 13 The Connection Method LA MC1 45 14 PC Boards and Parts List LA MC1 50 15 Included Accessories LA MC1 51 1 SAFETY...

Page 2: ...ible laser radiation emitted inside of this product is completely confined in the protective housings The label required in this regulation is shown CAUTION USE OF CONTROLS OR ADJUSTMENT OR PERFORMANC...

Page 3: ...DIF Keyboard Mini DIN 6 pin MD specifications Frequency response 20 Hz to 20 kHz 0 5 dB S N ratio 98 dB playback A filter 95 dB recording A filter Dynamic range 98 dB playback A filter 95 dB recording...

Page 4: ...o 104 F Supplied accessories remote control unit 1 AA batteries 2 power cord 1 rack mounting kit 1 owner s manual 1 warranty 1 For product improvement specifications and external appearance are subjec...

Page 5: ...s procedure is applicable for MD CD system microcomputer version 1 10 and above VERSION UP VERSION CHK When an item is selected and you press the CD STOP key you will go back to the test mode menu 3 3...

Page 6: ...to operate which encoder in this order 1 Rotate the center encoder counterclockwise over a distance of 3 clicks 2 Rotate the center encoder clockwise over a distance of 3 clicks 3 Push the center enc...

Page 7: ...ial setting of EEP ROM for Japan For use before shipment 2 DEF PARA JPN Initial setting of EEP ROM for Japan Total play and record times not initialized 3 DEFAULT US Initial setting of EEP ROM for oth...

Page 8: ...out Disc Set is displayed Place the disc carrying the update from file copy in the tray and press the OPEN CLOSE key to close the tray You can also manually close the tray The loaded disc is checked...

Page 9: ...wn both keys until Test Mode is displayed Terminating test mode Switch off the power Selecting test mode options Select options with the multi jog and press the ENTER key to confirm your selection Pre...

Page 10: ...nts to a power outlet A three prong plug should be converted to a two prong plug 3 The adjustment reference voltage is available at Vc So avoid shorting Vc to ground Don t connect the GND terminal of...

Page 11: ...g the CD STOP key in the process of adjustment interrupts the process bringing you back to MD ADJUST If you interrupt the process re do adjustment 1X speed adjustment When LD Adjust x1 is displayed pr...

Page 12: ...en the meter registers the correct value press the ENTER key to save data and the laser stops emitting light The display changes to read LD Adjust x4 4X Speed Adjustments When LD Adjust x4 is displaye...

Page 13: ...nism assembly 2 When Pit Read is displayed press the ENTER key and the laser starts emitting light The display changes to read Pit Read xxx 3 Check to see that the laser power meter registers 0 66 mW...

Page 14: ...t The display changes to read Write x 4 xxx 3 Check to see that the laser power meter registers 8 1 mW or so 4 Press the ENTER key and the laser stops to emit light The display changes to read 1 2 Wri...

Page 15: ...RV 2 MULTI JOG 3 ENTER EFB MO TOCx 1X speed MO adjustment 1 MO in record adjustment 1X speed EFB Write x1 1 When Rec Disc Set is displayed insert SONY MDW 74 or equivalent disc 2 When the disc is load...

Page 16: ...splayed as a result of completing process 4 press the ENTER key and EFB xx GRV 4 is displayed in several seconds 2 Make adjustment by rotating the multi jog 3 After making adjustment for a proper valu...

Page 17: ...adjustment the process is interrupted bringing you back to MD ADJUST If you interrupt the process re do adjustment 1 MO Disc adjustment 1 When FBIAS ADJUST is displayed insert MMD 221 2 When the disc...

Page 18: ...sc Pit Disc MO Disc Pit Disc Track Number Area Cluster Address Hex MO Disc LDPWR CHECK RF CD STOP MD ADJUST 10 1 1 MULTI JOG ENTER MD ADJUST CREC MODE CREC OUT x 2 CREC OUT x SONY MDW 74 Caution To pr...

Page 19: ...c play This check is made only for 1X speed Connect the jitter meter probe to the RF terminal If no jitter meter is available check C1 value displayed against what is shown within angle brackets We re...

Page 20: ...isc TOC Now Editing Editing operation is being performed Edit Over Write Overwrite recording mode is on Message Details response Disc Error The disc has malfunctioned Please replace with a new disc Di...

Page 21: ...se the Group mode is on Can t Sel Menu selection cannot be performed due to selection prohibitions Can t Undo You can ft undo since no editing has been done Undo Undo Rec Error was an error during rec...

Page 22: ...SEMBLING AND REASSEMBLING MD MECH MD TASCAM MD CD1 LA MC1 6 1 Disassembling reassembling the main block 6 1 53 55 31 47 51 32 54 A 45 56 50 49 32 32 C 44 32 46 B 23 68 23 35 36 23 42 43 24 25 54 54 gr...

Page 23: ...the 3 screws x to remove the mode switching mechanism c 20 Remove the 2 INSULATORs R 21 Remove the HD LIFTER Notes Do not mistake SW NOB L for SW NOB S when reassembling Be careful not to deform the O...

Page 24: ...DG MTR ASSY from the chassis and take care not to scratch the press fitting gear when reinstalling it Reinstall the SLED LDG MTR ASSY paying attention to the polarity of its terminals Fig 6 6 Place th...

Page 25: ...w toward A Fig 6 9 to remove the RACK SLIDER o Apply screw locking compound to the tip of the screw a after completing installation 1 PICK UP UNIT t Fig 6 8 FPC PICK 2 a SLED BASE u 3 SLED BASE RACK S...

Page 26: ...isassembly procedure to reassemble Refer to the figures for the screw tightening torque or the lubrication target for grease or screw locking compound Note that if the standard torque is used to tight...

Page 27: ...JM2750 COMMON OUT R COMMON OUT L 24bit CODEC U113 AK4528 MD OUT R MD OUT L BALANCE OUTPUT OPTION SELECT SW PHONE OUT MD IN R MD IN L MD OPTICAL DIGITAL OUT MD OPTICAL DIGITAL IN BCK LRCK DI DO MD AUDI...

Page 28: ...SW U102 NJM2750M NJM2750M U104 AK4528 U113 U504 U116A U116B U115B U115A U114B U114A SW180 VR180 U180A U180B J104 U302A U302B U402A U402B U301A U301B U401A U401B B L C L C R B R A L A R D R D L E R E...

Page 29: ...ACK UNBALANCE OUTPUT LEVEL 50 dBv 10 10 20 30 40 0 U G O 20 15dB infinity 6dBv CD PLAY BACK INPUT FULL SCALE 0dB N 30 MD PLAY BACK INPUT FULL SCALE 0dB 40 0 10 20 T MD PLAYBACK UNBALANCE OUTPUT LEVEL...

Page 30: ...30 TASCAM MD CD1 LA MC1 Q 10 20 30 F CD MD PLAYBACK BALANCE OUTPUT LEVEL 0 J 10 6dBv dBv G S 17 81dBv 20dBm CD MD PLAYBACK UNBALANCE COMMON OUTPUT LEVEL G 0 H dBv 20 6dBv P 30 F 10 10 I 6dBv 0 5dBv...

Page 31: ...LANCE ANALOG INPUT MD RECORDING LEVEL 50 dBv 10 10 20 30 40 0 A B C 20 7dBv 0 5dBv ANALOG INPUT REF LEVEL 10dBv 10 B 20 10 8dBm 50 20 0dB 30 ANALOG INPUT REF LEVEL 4dBm D 40 dBm 0 BALANCE ANALOG INPUT...

Page 32: ...d capacitors refer to the circuit diagrams contained in this manual Parts marked with this sign are safety critical components They must be replaced with identical components refer to the appropriate...

Page 33: ...9 EXPLODED VIEWS AND PARTS LIST EXPLODED VIEW 1 33 TASCAM MD CD1 LA MC1...

Page 34: ...EXPLODED VIEW 2 34 TASCAM MD CD1 LA MC1...

Page 35: ...22 3B00051 06A SCREW BPS M2X6 1 23 3B00057 06A SCREW BPB M3 6 BLK 1 24 3M00572 00B FLAP DISC B MD 5B 1 25 M018902 00B BRACKET MDMECH MCD1 1 26 3B00057 06A SCREW BPB M3 6 BLK 1 27 3B00057 06A SCREW BPB...

Page 36: ...00A HOLDER FL MCD1 1 79 3M01812 00A TUBE A PVC 130MM G 1 80 E952008 00A PCBA MAIN MD CD1 PCBA MAIN Refer to page 38 39 1 81 E902010 00B PCB FRONT MD CD1 PCBA Gather Refer to page 40 1 82 E902011 00B...

Page 37: ...2 23 9A07556100 SCREW 1 7 3X4 UG23V 11 2 24 9A07556200 SCREW 0 PAN 3 1 7X4 UG16C 12 2 25 9A07556300 O W HD DU111 11 2 31 9A07568700 SIDE BKT R DC114 17 2 32 9A07557000 SCREW PAN TT 2X4 KG194 34 2 35...

Page 38: ...38 TASCAM MD CD1 LA MC1 MAIN PCB ASSY SIDE A 10 PC BOARDS AND PARTS LIST...

Page 39: ...39 TASCAM MD CD1 LA MC1 MAIN PCB ASSY SIDE B...

Page 40: ...TASCAM MD CD1 LA MC1 GATHER PCB ASSY PCB FRONT PCB VOL KEY I F PCB PHONE PCB POW SW PCB 232C PCB SLIDE SW SIDE A GATHER PCB ASSY PCB FRONT PCB VOL KEY I F PCB PHONE PCB POW SW PCB 232C PCB SLIDE SW SI...

Page 41: ...S ARRAY 1 16W 4 33 J RA511 R0017404 RES ARRAY 1 16W 4 33 J RA512 R0017404 RES ARRAY 1 16W 4 33 J RA513 3R010174 R ARRAY 47OHM 4 0603 G RA514 3R010174 R ARRAY 47OHM 4 0603 G RA515 3R010174 R ARRAY 47OH...

Page 42: ...SW TACT SKQNAE D010 SW8 3E018680 SW TACT SKQNAE D010 SW9 3E018680 SW TACT SKQNAE D010 SW10 3E018680 SW TACT SKQNAE D010 SW11 3E018680 SW TACT SKQNAE D010 SW12 3E018680 SW TACT SKQNAE D010 SW13 3E0186...

Page 43: ...E D008424 20A OWNERS MNL G MCD1 E D008424 30A OWNERS MNL I MCD1 E D008424 40A OWNERS MNL S MCD1 E E009356 00A RMT CONT RC MC1 MCD1 G 3E003660 BATTERY UM 3 2P X ED 3E014140 POWER CORD DM G J 3E014150 P...

Page 44: ...alanced 1 ground 2 hot 3 cold Nominal output level 4dBu Maximum output level 20dBu Output impedance 75 MD ANALOG BALANCED INPUT Connector XLR balanced 1 ground 2 hot 3 cold Nominal input level 4dBu Ma...

Page 45: ...ut the cable tie above the MAIN PCBA shown below 3 Remove the cables from the following connectors on the MAIN PCBA of the MD CD1 P101 7 pin from J103 on the VOL KEY I F PCBA P105 5 pin from J106 on t...

Page 46: ...46 TASCAM MD CD1 LA MC1 4 Remove the flat cable from the harness clip 5 Bind the cables except the flat cable using the clip 6 Cut the cable tie shown below 4 5 6...

Page 47: ...onnect the cable removed from P101 to P303 7 pin 8 Push the flat cable from the CD drive to the front Turn the cables from the PHONES PCBA at the harness clip and pull them to the left viewed from the...

Page 48: ...the MAIN PCBA Connect the cable from J301 9 pin to P106 Connect the cable from J302 5 pin to P105 Connect the cable from J303 7 pin to P101 12 Bind the cables using cable ties at the four positions sh...

Page 49: ...49 TASCAM MD CD1 LA MC1 13 Place the flat cable from the CD drive above the LA MC1 14 Secure the top cover to the MD CD1 13 CD LA MC1 14...

Page 50: ...50 TASCAM MD CD1 LA MC1 XLR PCB ASSY SIDE 1 XLR PCB ASSY SIDE 2 14 PC BOARDS AND PARTS LIST LA MC1 LA MC1...

Page 51: ...0320 JACK XLR NC3FAH1 P301 3E006130 CONNECT PLUG B9B PH K BLK P302 3E007980 CONNECTOR B 5B ZR P303 3E003860 CONNECTOR PLUG B7B PH RED RA301 R009785 00A RES ARRY M 6277 RA302 R009785 00A RES ARRY M 627...