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NAD C521i Service Manual

Other manuals for C521i: Owner's Manual
Manual is about: NAD C521i Compact Disc Player Owner's Manual

Summary of C521i

  • Page 1

    Nad c 521i c o m pa c t disc player c 521i comp act disc pla yer ser vice manual.

  • Page 2: Safety Information

    2 catuion hgkjdhsgkjhgsjk advarsel hgkjdhsgkjhgs kbvnclknbcvlknlknvlkncvncl vk jk advarsel hgklfh;l;hjmnmd hfkljhjldkljlkdjlkfhjhsgmmkjhgsjk varin g hgkjdhsgkjhgklgdjh klh kfg ;lkng;lkjgf;lkjg f;lkjfl;sjk varo ! Hgkjdhsgkjhjbjkbkjbjkgs kbvn clknbcvlknlkn vlkncvncl vk jk vorsict! Hgklfh;l;h hbh hjd j...

  • Page 3: Service Safety Precautions

    3 service safety precautions 1. Replacing the fuses caution: for continued protection against the risk of fire replace only with same type of fuse. Reference no part number description m502-m504 *ah 5120-0020-0 fu t1a 250v ul/csa 5x20mm m502-m504 *c 5120-0018-0 fu t1a 250v semko/ude 5x20mm m505 *ah ...

  • Page 4: Specifications

    4 specifications disc capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One disc, 120 or 80 mm decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Burr-brown delta sigma 20bit digital filter . . . . . . . . . . . . . . . . . . . . . ....

  • Page 5: Rear Panel / Front Panel

    5 i 1 1. Line out 2. Digital out 3. Ac line cord 1. Power on / off 2. Disc drawer 3. Display 4. Open 5. Play / pause 6. Time 7. Stop 8. Repeat 9. Random 10. Scan back ( ) / forward ( ) 11. Skip back ( ) / forward ( ) 12. Standby led i 1 i rear panel / front panel rear panel front panel.

  • Page 6: Disassembly Instructions

    6 disassembly instructions 1. Remove machine screws m 4.0 x 6.0 ( 1 to 4 ) from the side panels. Remove tapping screw 3.0 x 8.5 ( 5 )from the back panel. Refer to figure no.1 . Figure no.1 2. Pull both sides of the top cover slightly outwards 6 and tilt approx. 35˚ and then remove in the direction a...

  • Page 7: Block Diagram

    7 block diagram u401 m38223e4hp4 system control cpu & lcd display driver q401- q405 mute circuit q301-q304 mute m317 rca jack u302 pmc1710 m318 rca jack digital output m501* lcd display 8 7 27 22 2 1 3 51 78 35 1 2 16 13 3 61 62 63 51 43 39 40 46 45 38 24 12 9 2 4 3 6 60 l r l r cd audio o/p 12 15 2...

  • Page 8: Wiring Diagram

    8 wiring diagram 115v:j401,j404 230v:j403 l401 j403 j406 j407 j402 j404 j401 1723-006a-0000 8v 0v 0v 8v 15v 0v 15v issue b m120c m505b m301 live neutral m500a m102 (16pin) m105 (6pin) m505a cd mechanism transformer bo ard displa y bo ard key bo ard live bo ard m101 (5pin) to chassis m805 br o w n m8...

  • Page 9: Rf Pattern Testing

    9 rf pattern testing testing point nad - c 521i pcb testing points diagram testing procedure (1) load the test disc (sony test cd yeds-7) and set the unit into play mode. (2) connect the scope to r227 (pin 15 of u101) and dgnd (j144). Scope setting: coupling : ac. Vertical sensitivity : 0.2 v/ div. ...

  • Page 10: Important Notes

    10 important notes instruction for handling optical system block pick-up electrostatic breakdown of the laser diode in the optical system block may occur due to a potential difference caused by electrostatic charge accumulated on clothing, human body, etc. A ground must be provided as follows to pre...

  • Page 11

    11 precautions when changing laser pick-up when removing the pick-up assembly, short circuit the pcb tracks on the optical block as show in the drawing in order to protect the pick-up before removal. Note : replacement pick-up assemblies are supplied with the pcb pattern already protected. Do not re...

  • Page 12: Pcb Layout

    12 pcb layout display board key board live board led board.

  • Page 13

    14 13 main board.

  • Page 14

    15 16 schematic diagram display sl+ 1 sl- 2 rcin1 3 srdr 4 sfdr 5 vrefi 6 vrefo 7 gnd 8 frdr 9 ffdr 10 rcin2 11 fcs+ 12 fcs- 13 gnd1 14 mute 15 trk+ 16 trk- 17 rcin3 18 tfdr 19 trdr 20 vcc 21 vcc1 22 vbin 23 spdr 24 vbin1 25 sp- 26 sp+ 27 gnd2 28 gnd 29 gnd 30 u201 ba6392 sqso 1 sqck 2 xrst 3 sysm 4...

  • Page 15

    18 17 mcu p67/an7 1 p66/an6 2 p65/an5 3 p64/an4 4 p63/an3 5 p62/an2 6 p61/an1 7 p60/an0 8 p57/adt 9 p56/tout 10 p55/cntr1 11 p54/cntr0 12 p53/rtp1 13 p52/rtp0 14 p51/int3 15 p50/int2 16 p47/srddy 17 p46/sclk 18 p45/txd 19 p44/rxd 20 p43/i1 21 p42/int0 22 p41 23 p40 24 /reset 25 p71/xcin 26 p70/xout ...

  • Page 16

    19 20 vc 1 vcc 2 e 3 d 4 a 5 b 6 c 7 f 8 gnd 9 ld 10 vr 11 pd 12 fcs+ 13 trk+ 14 trk- 15 fcs- 16 m102 16pin ld 1 pd 2 eq_in 3 ac_sum 4 gnd 5 a 6 b 7 c 8 d 9 e 10 f 11 sw 12 dvcc 13 dvc 14 rfac 15 fe 16 fei 17 te 18 te_bal 19 ce 20 cei 21 vcc 22 rfg 23 bst 24 vfc 25 rfc 26 vc 27 rfdco 28 rfdci 29 dc_...

  • Page 17

    21 10 1 2 3 4 5 6 7 8 9 m500 1 2 3 4 m810 tln120a150w3r0 ac1 ac cordest ferrite ring * only in c version m802 power_sw c800 4700p j800 230v j801 120v d514 in4001 d516 in4001 c543 104k c541 104k c501 104k d515 1n4001 d517 1n4001 c542 104k c540 104k vin gnd vout 1 2 3 u507 7808 dgnd c529 4700u/16v c52...

  • Page 18: Ic Block Diagram

    Ac sum ac vca eq_on/off vc d vcc r w/r om r w/r om r w/r om r w/r om r w/r om r w/r om r w/r om vc vc vc dv c dv c v ofst v ofst b c a d v ofst eq apc 23 rfg 24 bst 26 rfc 25 vfc 14 dvc 27 vc 5 gnd 22 vcc 1 ld 2 pd 12 sw 11 e 10 f 9 d 8 c 7 b 6 a 15 rf a c 30 dc_ofst 29 rfdci 28 rfdco 17 fei 16 fe 1...

  • Page 19

    23 main board u301: cxd3017q clock generator efm demodurator error corrector 16k ram digital out d/a interface serial-in interface over sampling digital filter pwm pwm timing logic 3rd-order noise shaper sub code processor servo auto sequencer servo interface servo block dac block signal processor b...

  • Page 20

    24 input interface timing control digital filter mode control noise shaper 5-level dac left low pass filter left cmos amp left 5-level dac right low pass filter right cmos amp right 1 2 3 4 6 8 10 12 5 7 9 11 13 14 lrcin din bckin clko xti xto dgnd vdd vcc2r agnd2r ext1r ext2r voutr agnd1 28 27 26 2...

  • Page 21

    25 a1 b1 y1 a2 b2 y2 gnd vcc b4 a4 y4 b3 a3 y3 1 2 3 4 5 6 7 14 13 12 11 10 9 8 main board u403: tc74hc00ap v0 gnd v1 main board u503: upc79m12hf amplifier 1 output inverting input non-inverting input v – amplifier 2 v + output inverting input non-inverting input 1 2 3 4 8 7 6 5 + – – + main board u...

  • Page 22: Troubleshooting Guide

    26 troubleshooting guide set power switch to on. Is power turned on ? M502, m503, m504, m505 defective crystal m401 defective. Microprocessor ic u401 defective. Motor drive ic u701 defective. Can tray be opened ? Can tray be closed ? Does initial reading occur ? Can disc be played ? Check tracking s...

  • Page 23: Electrical Parts List

    27 display assembly pcb board 1000 * pcb-n0a10c-disp display assembly backlight m502 2450-1146-0 el backlight lcd m501 2460-1340-1 lcd display (522) ir sensor m113 4816-043t-3 ir sensor pic-26043tm2 conn ector wires m505a, m505b 7009-9630-0 conn wire assy 14p 100mm m509a 7010-1300-1 cn assy shield 2...

  • Page 24

    28 power switch m802 5200-3151-0-01 power switch transformer m810 *c 1806-2170-0 emi filter tln12ua 150w3r0 transformer assembly 4000 *ah pcb-n0a10c-pwr transformer assembly 4000 *c pcb-n0a11c-pwr transformer assembly transformer m500 1806-2194-0 ei-57 transformer 740 ac3 fuse assembly fuses m502-m5...

  • Page 25

    29 c330,c370 153f-103j-5-im cm 50v 0.01µf 5% rl 5x7 c331 157c-226m-5-iuk ce 10v 22µf 20% rl 5x11 c352,c353 150f-331k-5-ge cc 50v 330pf 10% rl 4x3 c356,c357 153f-272j-5-jm cm 50v 2700pf 5% rl 5.5x7 c362,c363 153f-472j-5-km cm 50v 4700pf 5% rl 6x7 c366,c367 158f-681j-5-kw cp 50v 680pf 5% rl 6x12 c368,...

  • Page 26

    30 m317 2113-1300-0 2p rca jack w/r au m318 2113-1170-0 1p rca jack yl au m500a 2102-071s-004 wf t8 de 7pin coulomb m505a,m505b 2102-141s-004 14p st. Wafer p=2.5mm m509 2102-021s-004 2p st.Wafer p=2.5mm m509a 2102-022s-008 wafer 2pin pitch=2.54mm crystals m302 2300-0110-0 crystal 16.9344 mhz x301 23...

  • Page 27

    31 r311,r331,r335,r347 4701-102j-c rcf 1/8w 1k 5% ats r312-r314 4701-223j-c rcf 1/8w 22k 5% ats r317 4711-362a-2 rmf 1/8w 3.6k 1% at r318,r330,r338,r346 4701-103j-c rcf 1/8w 10k 5% ats r320 4701-471j-c rcf 1/8w 470r 5% ats r321-r323 4701-472j-c rcf 1/8w 4.7k 5% ats r325-r329,r377,r378 4701-472j-c rc...

  • Page 28: Mechanism Exploded View

    32 mechanism exploded view 27 11 3 15 28 29 22 10 1 9 24 (x2) 21 (x4) (x2) (x4) 23 30 31 (x2) 8 26 26 5 12 17 16 6 25 (x2) (x2) 14 32 20 13 25 19 18 (x2) 2 7 4 wsl-2130ccm.

  • Page 29

    33 1 4102-9000-0 outside main chassis 1 2 4102-9001-0 tray 1 3 4102-9002-0 subchassis 1 4 4102-9003-0 chucking plate 1 5 4102-9004-0 drive gear 1 6 4102-9005-0 control cam 1 7 4102-9006-0 chucking pulley 1 8 4102-9007-0 gear cover 1 9 4102-9008-0 tray gear 1 10 4102-9009-0 intermediate gear 1 11 410...

  • Page 30: Exploded View

    34 exploded view.

  • Page 31: Exploded View Parts List

    35 0001 1465-5705-3 fasscia w/ss paint 1 0002 1402-3781-2 starp 1 0003*ah 1402-3520-0 chassis w/ss paint 1 0003*c 1402-3521-0 chassis w/ss paint 1 0005 1402-3530-0 cover 1 0006 2442-1000-0 power button 1 0007 4154-4191-0 cd door w/ss paint 1 0008 3716-4313-0 window lens w/ss 1 0010 2444-1201-0 butto...

  • Page 32: Packing Diagram

    36 packing diagram 36 37 38 36 41 42 40 39 44 43 45 item part no. Description q’ty 36 1490-3783-1 polyfoam endcap 2 37 1497-1332-1 unit polybag 1 38 1497-1432-0 fascia cover 1 39 4060-0530-0 batteries 2 40 2103-7302-1 rca cable 1 41 8912-0005-0 remote control handdset 1 42 1497-1302-0 remote control...

  • Page 33: Ser

    Ser vice manual © nad 2002 c 521i comp act disc pla yer nad electronics international toronto.