- DL manuals
- NAD
- Receiver
- C 542
- Service Manual
NAD C 542 Service Manual - 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 REMOVE THE SHORT CIRCUITS UNTIL YOU HAVE FINISHED FITTING THE PICK-UP.
Caution:
Laser diodes are extremely susceptible to damage from static electricity. Even if a static discharge does not ruin the
diode, it can shorten its life or cause it to work improperly. When replacing the pick-up, use a conductive mat, a
grounded soldering iron, and so on, to protect the laser diode from static damage.
Ground Conductive
Wrist Band for Body
Ground Line
Less than
10 ohm
Conductive Gum Mat
Soldering
Iron with
Ground
wire
Protective soldering place
for laser diode
Summary of C 542
Page 1
Nad c 542 c o m pa c t disc player c 542 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 varing hgkjdhsgkjhgklg djh klhkfg;lkng;lkjgf;lkjgf;lkjfl;sjk varo! Hgkjd hsgkjhjbjkbkjbjkgs kbvn clknb cvlknlkn vlknc vncl vk jk vorsict! Hgklfh;l;h hbh hj...
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 m507 *ah 5120-0052-0 fuse t1.6a 250v 5x20mm m507 *c 5120-0050-0 fuse t1.6a 250v 5x20mm m512, m513 *ah 5120-0020...
Page 4: Specifications
- 4 - specifications disc capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One disc, 120 or 80 mm decoding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Burr-brown delta sigma 24bit digital filter . . . . . . . . . . . . . . . . . . . ....
Page 5: Rear Panel / Front Panel
- 5 - digital optical out digital optical out digital out digital out trigger switch trigger switch ir in in off off auto auto nad link out in ' 2003 nad c 542 4 5 6 7 1. Line out 2. Digital optical & coaxial output 3 nad link in / out 4. Ir input 5. Trigger in 6. Trigger switch 7. Ac line cord 1. P...
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 directi...
Page 7: Block Diagram
- 7 - block diagram u301 m38b59ef system control cpu & vfl display driver q401- q403 mute circuit q301-q304 mute m313 rca jack q307 m313 ir_in m318 rca jack digital output u402 nad link micro- controller u403 74hc00 nand gate nad link in m501 vfl display m314 trigger switch m315 trigger in nad link ...
Page 8: Wiring Diagram
- 8 - wiring diagram m102 (16pin) m301a m505a m506a m120a m105a (6pin) cd mechanism live board displa y board key board main board led board m101 (5pin) brown black neutral live red m502 transformer.
Page 9: Rf Pattern Testing
- 9 - rf pattern testing nad - c 542 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. Horizontal ...
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 no...
Page 12: Pcb Layout
- 12 - pcb layout display board key board live board led board.
Page 13
- 13 - main board.
Page 14
- 14 - l302 10uh vcc r308 3k r309 3k x301 4.00m unld load xrst xlat clok data scor sysm rw/rom/ldoff rw/rom/ldoff sclk sqck 1/2x cd/cdr disco di/sw r331 4k 7 r332 1k r333 4k 7 r328 4k7 r327 4k 7 r334 4k 7 sqso sens c301 33p c302 33p c303 0.01u 1 2 3 q311 8050 d303 in4148 r312 10k r311 100k c308 10u/...
Page 15
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 u202 ba6392 sqso 1 sqck 2 xrst 3 sysm 4 data 5 xlat 6 clok 7 sens 8 scl...
Page 16
- 16 - vc 1 vdd 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 - lrck pcmd bck clko m302a 16.9344mhz c328 20p c329 20p dgnd dgnd c320 10u/16v agnd c324 10u/16v agnd c376 100u/16v c378 224k r362 4k7 r360 15.2k c353 100p r396 4k7 a-12v agnd r364 1k5 r368 2k2 r372 2k2 c357 2700p c363 4700p c367 680p r376 75r r374 100k r380 75r 1 2 m317a l q302 2sd655f q304 2s...
Page 18
- 18 - 1 2 3 4 5 6 7 8 9 10 11 m502 transformer toroid m507 t1.6a 250v m514 t315ma 250v m512 t1a 250v m513 t1a 250v j800 120v j801 230v ac1 cordest 1 2 3 4 m810 tln120a150w3r0 m802 power_sw c800 4700p ferrite ring only in c version d514 in4001 d516 in4001 c543 104k c541 104k c501 104k d515 1n4001 d5...
Page 19: Ic Block Diagram
- 19 - main board u101: cxa2581n 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 ...
Page 20
- 20 - main board u201: 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 21
- 21 - port p5(8) 8 port p6(6) 6 port p7(8) 8 port p8(8) ram 8 port p9(2) 2 port p0(8) a-d converter (10-bit x 12 channel) serial i/o serial i/o1(clock-synchronized) (256 byte automatic transfer) serial i/o2 (clock-synchronized or uart) timers timer x(16-bit) timer 1(8-bit) timer 2(8-bit) timer 3(8-...
Page 22
Input port 3 counter timers (2) interrupt control two analog comparators port 2 i/o (bit programmabel) 1 p24 p25 p26 p27 p28 xtal 2 xtal 1 p31 p32 p23 p22 p21 p20 gnd p02 p01 p00 p33 18 9 10 i/o vcc alu otp program counter machine timing & inst. Control flag flegister pointer general-purpose registe...
Page 23: Troubleshooting Guide
- 23 - 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 24: Electrical Parts List
- 24 - disp assy pc board pcb-n0a70c-disp pcb assy disp n0a70c wire m505a 7009-9620-0 conn wire assy 12p 100mm m506a 7010-2224-0 conn wire assy awg28 pc board 1725-711a-0000 pcb key n0a7xc c542 miscellaneous 0017 4134-8701-0 holder, vfd corner 0024 4152-4841-1 black cushion (el/lcd) led1 3700-5810-r...
Page 25
- 25 - led d304 3700-3517-rg led red/green (l-469hgw) wire m301a 7703-1280-2004 conn.Assy 3p p2.5 l=280 pc board 1725-201b-0100 pcb main n0a70c c542 live assy pc board *ah pcb-n0a70c-live pcb assy live n0a70c *ce pcb-n0a71c-live pcb assy live n0a71c switch m802 5200-3151-0-01 power switch pc board 1...
Page 26
- 26 - c218 150f-101k-2-fc cc 50v 100pf 10% at 3.5x2 c219,c220 150f-474m-5-ii cc 50v 0.47µf 20% rl 5x5 c226 157f-334m-5-gmk ce 50v 0.33µf 20% rl 4x7 c229 157d-477m-5-ovk ce 16v 470µf 20% rl 8x11.5 c303,c370 153f-103j-5-im cm 50v 0.01µf 5% rl 5x7 c305 157d-227m-5-omk ce 16v 220µf 20% rl 8x7 c306,c514...
Page 27
- 27 - m301b 2102-031s-004 3 pin st. Wafer m502 2101-1811-0 8p pin connector p=3.96 m505b 2102-121s-004 12p st.Wafer m506b 2102-161s-004 16p st wafer p=2.5 jack m313,m315 2113-1743-0 mono jack htj-035-12e m317 2113-1300-0 2p rca jack w/r au m318 2113-1170-0 1p rca jack yl au m319 2113-1121-0 2p rca ...
Page 28
- 28 - r105,r110,r30-r310 4711-302a-2 rmf 1/8w 3k 1% at r106 4711-154a-2 rmf 1/8w 150k 1% at r107,r212,r220,r225,r311, 4711-104a-2 rmf 100k 1/8w 1% at r373,r374,r410,r414 r108 4711-683a-2 rmf 1/8w 68k 1% at r109,r119,r218,r219,r322 4711-153a-2 rmf 1/8w 15k 1% at r112,r113,r114 4711-512a-2 rmf 1/8w 5...
Page 29
- 29 - transistor q101,q104,q105 4860-0060-5 tr ss8550 c/d samsung rl q103,q106,q107,q307-q312 4860-0050-5 tr ss8050 c/d samsung rl q301-q304 4860-1780-5 tr 2sd655f hfe:600-1200 q401,q403 4860-0660-5 tr 2sa1015 (g.R.) rl q402 4851-012f-5 tr 2sd1012f/g hfe q404 485a-114e-5 tr dta114esa rohm q405 485c...
Page 30: Mechanism Exploded View
- 30 - 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 31
- 31 - 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 32: Exploded View
- 32 - exploded view m500
Page 33: Exploded View Parts List
- 33 - 0001 *ah grey/*ce grey 1466-5103-0 fascia black (c542) 0001 *ah ti/*ce ti 1466-5104-1 fascia silver (c542) 0002 1402-3783-2 strap (c542) 0003 *ah grey/*ah ti 1402-3526-1 chassis c542(ah) 0003 *ce grey/*ce ti 1402-3527-1 chassis c542(c) 0005 *ah grey/*ce grey 1402-3531-0 top cover black (c542)...
Page 34
- 34 - note: - the components identified by mark are critical for risk of fire and electrical shock. Replace only with part number specified. - : usa, canadian model only. - : european model only. 0211 2904-3006-0000 screw m3x6 0213 2954-3008-3000 t3x8mm self tapping 0216 2954-3008-0000 tapping 3x8m...
Page 35: Packing Diagram
- 35 - packing diagram item part no. Description q’ty 1. 1435-8401-0-2 carton box c542 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. 4301-7073-0 instruction manual 1 8. 2103-7302-1 rca plug (male...
Page 36: Ser
Ser vice manual © nad 2003 c 542 comp act disc pla yer nad electronics international toronto.