Yamaha NX-A01 - Speaker Sys, Service Manual

Page 1: ...onents and failure of the product to perform as specified For these reasons we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative IMPORTANT The presentation or sale of this manual to any individual or firm does not constitute authorization certifica tion or recognition of any applicable technical c...

Page 2: ...mponents may also contain traces of chemicals found by the California Health and Welfare Agency and possibly other entities to cause cancer and or birth defects or other reproductive harm DO NOT PLACE SOLDER ELECTRICAL ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA SON WHATSOEVER Avoid prolonged unprotected contact between solder and your skin When soldering do not inhale solder fumes ...

Page 3: ...aximum Permissible Input 2 0 V Power Supply 100 240 V AC 50 60 Hz Power Consumption 8 W Standby Power Consumption C model 0 6 W T G L models 0 7 W Dimensions W x H x D 84 x 89 x 84 mm 3 5 16 x 3 1 2 x 3 5 16 Weight 310 g 11 oz Finish White color Accessories AC adaptor x 1 3 5 mm mini jack cable x 1 Specifications are subject to change without notice due to product improvements C Canadian model T C...

Page 4: ...Fig 1 c Remove CB302 and CB303 Fig 1 2 Removal of MAIN 2 P C B a Remove SPBOX ASS Y Fig 1 b Remone 4 screws 2 and then remove MAIN 2 P C B Fig 2 Fig 1 Fig 2 CB303 CB302 SPBOX Ass y Case Bottom Case Sheet Window Sheet Window 1 1 MAIN 1 P C B MAIN 2 P C B Case 2 2 About the Status Indicator LED The status indicator turns on or flashes to indicate the sta tus of this unit This unit is on This unit is...

Page 5: ...by setting it to the center of the button support jig Fig 6 Fig 3 Fig 4 Support P C B Dowel Support P C B Wind the tape 3 turns Making Button Support Jig Prepare a support P C B Ref No 16 Part No WG593900 a Using dowels together install the support P C B into its 4 installation holes Fig 3 b Wind the tape around 3 times at 4 places of the support P C B Fig 4 MAIN 2 P C B Dowel Dowel Button Ass y C...

Page 6: ...P C B to CB502 in MAIN 2 P C B is OK Trouble of audio circuit IC301 and peripheral cir cuit in MAIN 1 P C B Trouble of amplifier circuit IC304 and peripheral cir cuit in MAIN 1 P C B Trouble of microprocessor IC501 circuit in MAIN 2 P C B Good condition Is the sound produced Check the power when the power is turned on Step 1 OK NG NG NO OK YES Step 2 Step 3 1 12V and 12VA for system is OK 2 VA and...

Page 7: ...inal open or connect to VSS Input signal terminal Input signal terminal Input signal terminal Input signal terminal Input selector output terminal Volume equalizer input terminal Connection terminal for capacitor constructing treble band filter Connection terminal for capacitor and resistor constructing bus band filter Connection terminal for capacitor and resistor constructing bus band filter Vol...

Page 8: ...S terminal R ch negative side output terminal R ch 12V type VDD terminal Warning signal output terminal O D Sleep control terminal Digital ground terminal Clock input output terminal CERALOCK connection terminal 1 CERALOCK connection terminal 1 Digital ground termibnal connected to REFA terminal externally Operation mode select terminal Operation mode select terminal Operation mode select terminal...

Page 9: ...PT2 INPUT2 P32 SI0 RxD P22 KR0 P40 KR7 P47 INTP0 P30 INTP2 CTP2 P32 SO0 TxD P21 SCK0 ASCK P20 TI0 TO0 P50 TO2 P51 Watchdog timer System control 36 35 34 22 33 1 32 P03 P02 P50 TI0 TO0 P51 TO2 P52 P53 RESET X1 X2 IC NC P12 P04 37 38 39 40 41 42 43 44 2 P11 3 P10 4 P47 KR7 P46 KR6 5 P45 KR5 6 P44 KR4 7 P43 KR3 8 P42 KR2 9 P41 KR1 10 P40 KR0 11 31 P05 30 P06 29 P07 28 P20 ASCK SCK0 P21 TxD SO0 P22 Rx...

Page 10: ...N_SLEEP POWERON DET_BTU DET_PWDN INTP0 FLASH_SDI FLASH_SDO FLASH_SCK N_MUTE GNDb VOL_CE VOL_DI VOL_CL N_BTRESET GNDb N_LED_POWER GNDb 5Vb GNDb GNDb GNDb GNDb GNDb P13 for firmware version check P12 for firmware version check P11 for firmware version check P10 detection of YDA138 amplifier protection reserved must be pulled up to VDD0 POWER key input MUTE key input VOLUME DOWN key input VOLUME UP k...

Page 11: ...IER H P F and LIMITER 14dB 18dB 5V 5Vb CB302 N_SLEEP N_RESET DET_PWDN N_MUTE VOL_CE VOL_CL VOL_DI AMP_PRT IC501 µPD789022GB A70 8ES A MICROPROCESSOR MUTE SW503 SW502 SW504 STAND BY ON Vol UP Vol DOWN STATUS INDICATOR D506 509 511 SW501 AC Adapter DC IN 12V JK302 12V DC 12V 1A Q501 502 9V IC306 NJM2370U09 23 5V IC305 PQ1CZ38M2ZPH 8 MIXER ELECTRONIC VOLUME and TONE CONTROL MAIN 1 MAIN 2 See page 16 ...

Page 12: ...DET_BUT AMP_PRT POWERON GND 5V 12V VOL_CL N_BTRESET N_MUTE N_SLEEP VOL_CE N_BTPOWER GND 5V MAIN 1 P C B Side A MAIN 1 P C B Side B No replacement part available Semiconductor Location PRINTED CIRCUIT BOARDS Ref no Location D302 C2 D303 C2 D304 B7 D305 C3 D306 C3 D307 C3 D308 C3 D309 B6 D310 B6 D311 C6 D312 C6 D313 D314 D315 D316 D317 IC301 C2 IC304 C4 IC305 C5 IC306 C2 Q306 C5 ...

Page 13: ...302 VOL_DI BT_STATE DET_BUT AMP_PRT POWERON GND 5V 12V VOL_CL N_BTRESET N_MUTE N_SLEEP VOL_CE N_BTPOWER GND 5V STANDBY ON MUTE VOLUME VOLUME MAIN 2 P C B Side A MAIN 2 P C B Side B D501 B5 D502 B5 D503 C5 D506 B3 D507 C2 D508 C2 D509 B2 D510 B2 D511 C2 D512 C6 D513 B5 D514 B5 IC501 B5 Q501 C5 Q502 C5 Q503 B5 Semiconductor Location Ref no Location ...

Page 14: ...2SC2412K 1SS355 MA8160 L 15 7V RB051L 40 RB160L 40 TE25 RB500V 40 UDZ6 8B 6 8V Anode Cathode LC75348M 30 15 1 4 5 1 2 3 NJM2370U PQ1LAX95MSPQ 1 Vadj 2 GND 3 Vc 4 Vin 5 Vo 1 5 4 2 3 YDA138 42 1 22 21 µPD789022GB A70 8ES A 1 11 33 23 12 22 44 34 PIN CONNECTION DIAGRAM ...

Page 15: ...EGULATOR PORTABLE IN no_use no_use No replacement part avilable TEST V SS CE DI CL V DD Vref RVref LVref CCB INTERFACE ZERO CROSSDET MULTIPLEXER MULTIPLEXER LOGIC CIRCUIT CONTROL CIRCUIT ZERO CROSSDET NO SIGNAL TIMER TIM LOUT 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 ROUT LBASS2 LBASS1 LTRE LIN LSELO L4 L3 L2 L1 R1 NC NC R2 R3 R4 RSELO RIN RTRE RBASS1 RBASS2 ...

Page 16: ...POWER ON connect the power cable 1 Q502 E 2 Q501 C POWER ON connect the power cable POWER OFF disconnect the power cable IC501 µPD789022GB A70 8ES A 8bit single chip controller 8 bit timer event counter 00 78K 0S CPU core ROM 4 KB RAM 256 bytes Port 0 Port 1 Port 2 Port 3 Port 4 Port 5 P00 to P07 P20 to P22 P30 to P32 P40 to P47 P50 to P53 RESET X1 X2 IC 36 35 34 22 33 1 32 P03 P02 P50 TI0 TO0 P51...

Page 17: ... L DTCT LIGHT DETECTING MODULE L EMIT LIGHT EMITTING MODULE LED DSPLY LED DISPLAY LED INFRD LED INFRARED MODUL RF MODULATOR RF PHOT CPL PHOTO COUPLER PHOT INTR PHOTO INTERRUPTER PHOT RFLCT PHOTO REFLECTOR PIN TEST PIN TEST POINT PLST RIVET PLASTIC RIVET R ARRAY RESISTOR ARRAY R CAR CARBON RESISTOR R CAR CHP CHIP RESISTOR R CAR FP FLAME PROOF CARBON RESISTOR R FUS FUSABLE RESISTOR R MTL CHP CHIP ME...

Page 18: ...00 C CE CHP 1000pF 50V B C389 US063220 C CE CHP 2200pF 50V B C390 391 US063180 C CE CHP 1800pF 50V B C393 VR813200 C CE CHP 1uF 16V C394 UF037100 C EL CHP 10uF 16V C395 US035100 C CE CHP 0 1uF 16V B C402 405 WF456400 C CE M CHP 4 7uF 16V C501 US035100 C CE CHP 0 1uF 16V B C503 505 US035100 C CE CHP 0 1uF 16V B C506 WF456400 C CE M CHP 4 7uF 16V C507 US035100 C CE CHP 0 1uF 16V B C508 UF037100 C EL...

Page 19: ...720 CHIP RESISTOR SAMPLE BOOK R CHP 0Ω 1 16W J R CHP 10Ω 1 16W J R CHP 22Ω 1 16W J R CHP 100Ω 1 16W J R CHP 150Ω 1 16W J R CHP 330Ω 1 16W J R CHP 1KΩ 1 16W J R CHP 1 5KΩ 1 16W J R CHP 2 2KΩ 1 16W J R CHP 2 7KΩ 1 16W J R CHP 3 3KΩ 1 16W J R CHP 5 6KΩ 1 16W J R CHP 7 5KΩ 1 16W J R CHP 10KΩ 1 16W J R CHP 15KΩ 1 16W J R CHP 22KΩ 1 16W J R CHP 27KΩ 1 16W J R CHP 68KΩ 1 16W J R CHP 100KΩ 1 16W J R CHP 5...

Page 20: ... Cushion Button Support Jig 3 OVERALL ASS Y 2 When replacing the MAIN 2 P C B and button assembly be sure to use the button support jig for installation of the button assembly For the but ton support jig refer to DISASSEM BLY PROCEDURES 1 The sheet window once re moved cannot be reused Be sure to use a new sheet win dow for replacement ...

Page 21: ... WINDOW 19 WG595100 CUSHION M14 t 3 20 WH197800 NONSKID PAD M8 t 1 5 31 WG828600 DISH HEAD B TIGHT SCREW 2x5 MFZN2W3 33 WG828800 FLAT HEAD B TIGHT SCREW 2x5 MFZN2W3 ACCESSORIES 200 WH739100 AC ADAPTOR DC12V 2m 1pc C 200 WH739200 AC ADAPTOR DC12V 2m 1pc T 200 WH739300 AC ADAPTOR DC12V 2m 1pc G 200 WJ343600 AC ADAPTOR DC12V 2m 1pc L 201 WG871900 3 5mm MINI JACK CABLE 2P 500mm 1pc New Parts Ref No Pa...

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