NAD C 521BEE Service Manual - Block Diagram

Manual is about: NAD Electronics International Owner's Manual Compact Disc Player C 521BEE

Summary of C 521BEE

  • Page 1

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

  • Page 2: Safety Information

    - 2 - catuion hgkjdhsgkjhgsjk advarsel hgkjdhsgkjhgs kbvnclknbcvlknlknvlkncvncl vk jk advarsel hgklfh;l;hjmnm d hfkljhjldkljlkdjlkfhjhsgmmkjhgsjk varing hgk jdhsgkjhgklgdjh klhkfg;lkng ;lkjgf;lkjgf;lkjfl;sjk varo! Hgkjdhsgkjhjbjkbkjbjkgs kbvnclknbcvlknlknvlkncvnc lvk j k vorsict! Hgklfh;l;hhbhhjd jh...

  • 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 ...

  • 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 - 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 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 directio...

  • 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 ...

  • 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 board displa y board led board key board live board m101 (5pin) to chassis m805 b...

  • Page 9: Rf Pattern Testing

    - 9 - rf pattern testing nad - c 521bee 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. Horizont...

  • 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...

  • 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...

  • Page 12: Pcb Layout

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

  • Page 13

    - 13 - main board.

  • Page 14

    - 14 - 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 ...

  • Page 15

    - 15 - 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

    - 16 - 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

    - 17 - 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...

  • 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

    - 19 - 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 process...

  • Page 20

    - 20 - 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 ...

  • Page 21

    - 21 - 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 boa...

  • Page 22: Troubleshooting Guide

    - 22 - troubleshooting guide set power switch to on. Is power turned on ? Check fuses m507, m512-m514 open ? M507,m512-m514 defective crystal x301 defective. Microprocessor ic u401 defective. Motor drive transistor q104, q105, q106, q107 defective. Can tray be opened ? Can tray be closed ? Does init...

  • Page 23: Electrical Parts List

    - 23 - disp assy pc board pcb-n0a60c-disp pcb assy disp n0a60c wire m505a,m505b 7009-9630-0 conn wire assy 14p 100mm m509a 7010-1300-1 cn assy shield 2p p2.5 pc board 1725-221a-0102 pcb main n0a10c c521i miscellaneous 0011 4134-3011-0 lcd/el holder 0015 3716-3505-0 pc sheet filter 0016 3716-3502-0 p...

  • Page 24

    - 24 - live assy pc board *ah pcb-n0a60c-live pcb assy live n0a60c *ce pcb-n0a61c-live pcb assy live n0a61c switch m802 5200-3151-0-01 power switch pc board 1725-221a-0102 pcb main n0a10c c521i miscellaneous c800 8910-0049-0 cap400v 4700p m801,m803,m806 4132-1071-0 terminal pin m804 *ce 4132-1071-0 ...

  • Page 25

    - 25 - c385 150f-222k-2-gd cc 50v 0.0022µf 10% at c407 157d-228m-5-x9e ce 16v 2200µf 20% rl 12.5x20 c418,c530 157e-106m-5-iu ce 25v 10µf 20% rl 5x11 c506,c507 157e-228m-5-x9 ce 25v 2200µf 20% rl 12.5x20 c511 157c-227m-5-kw ce 10v 220µf 20% rl 6x12 c512,c513 157d-108m-5-s9 ce 16v 1000µf 20% rl 10x20 ...

  • Page 26

    - 26 - u507 3130-2790-1 ic njm7808fa +8v reg relay rl101 4500-0200-1 relay 2p2t bt-12s 12vdc resistor r101,r340 4701-100j-2 rcf 1/8w 10r 5% at r103,r104 4701-203j-2 rcf 1/8w 20k 5% at r105,r110,r308-r310 4701-302j-2 rcf 1/8w 3k 5% at r106 4701-154j-2 rcf 1/8w 150k 5% at r107,r212,r220,r225,r339, 470...

  • Page 27

    - 27 - d301,d303,d306,d409,d411 4804-1480-2 diode 1n4148 at d302,d513 4805-3930-2 diode 1n5393 200v 1.5a d403 4837-3v36-2 dz 1/2w +-5% 3.3v temic d505 4840-1140-0 zd 1.3w 3.3v 5% at transistor q101,q104,q105,q312,q313 4860-0060-5 tr ss8550 c/d samsung rl q103,q106,q107,q307-q309,q520 4860-0050-5 tr ...

  • Page 28: Mechanism Exploded View

    - 28 - 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

    - 29 - 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...

  • Page 30: Exploded View

    - 30 - exploded view m501.

  • Page 31: Exploded View Parts List

    - 31 - 0001 *ah tit/*ce tit 1466-5102-0 fascia silver (c521bee) 0001 *ah grey/*ce grey 1466-5101-0 fascia black (c521bee) 0002 1402-3783-2 strap (c542) 0003 *ce grey 1402-3525-1 chassis c521bee(c) 0003 *ah grey/*ah tit 1402-3524-1 chassis c521bee(ah) 0005 *ah grey/*ce grey 1402-3531-0 top cover blac...

  • Page 32

    - 32 - 0209 2900-4010-3030 ph w/washer m4x10 bl zn 0210 2954-3008-0000 tapping 3x8mm b-tite 0211 2904-3006-0000 screw m3x6 0213 2954-3008-3000 t3x8mm self tapping 0216 2954-3008-0000 tapping 3x8mm b-tite 0218 2954-3006-0000 3x6mm b-tite (yel.Zn) 0219 2904-3006-3000 screw m3x6 binding (blk) 0223,0228...

  • Page 33: Packing Diagram

    - 33 - packing diagram item part no. Description q’ty 1. 1435-8301-0-2 carton box c521bee 1 2. 1490-3783-2 polyform endcap 2 3. 1497-1062-0 polybag manual 1 4. 1497-1302-0 polybag 1 5. 1497-1332-1 polybag 1 6. 1497-1432-0 epe bag (412) 1 7. 4301-7071-1 instruction manual 1 8. 2103-7302-1 rca plug (m...

  • Page 34: Ser

    Ser vice manual © nad 2003 c 521bee comp act disc pla yer nad electronics international toronto.