Ser vice manual ser vice manual t531b t531c t531ah dvd video player models : t531b/t531c/t531ah ser vice manual © nad 2001 nad electronics international toronto t531b/t531c t531ah dvd video pla yer t531b/t531c t531ah dvd video pla yer.
Contents section 1 . . . .Summary section 2 . . . .Cabinet & main chassis section 3 . . . .Electrical section 4 . . . .Mechanism section 5 . . . .Replacement parts list.
Section 1 summary contents product safety servicing guidelines for video products ........................... 1-3 servicing precautions .................................................................................................. 1-4 • general servicing precautions • insulation checking prodedu...
1-3 prior to shipment from the factory, the products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such com- pliance, it is equally important to implement the following precaution...
1-4 fig. 3 safety check after servicing examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify complianc...
1-5 specifications dvd video player power supply ac 110~240v, 50/60hz(t531b, t531c) ac 120v, 60hz(t531ah) power consumtion 16w mass 3.0kg(6.6lbs) external dimensions 435 x 88 x 247 mm (w x h x d) signal system pal 625/50, ntsc 525/60 laser semiconductor laser, wavelength 650nm frequency range (digit...
2-1 section 2 cabinet & main chassis contents 1. Disassembly .........................................................................................................................2-2 cabinet disassembly .................................................................................................
2-2 disassembly caution before starting servicing electronic parts are susceptible to static electricity and may easily and damaged, so do not forget to take a proper grounding treatment as required. Many screws are used inside the unit. To prevent missing, dropping, etc. Of the screws, always use a...
2-3 main circuit board (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) (c) power code interface board (d) (d) scart key circuit board (e) (e) (e) (e) (5, 6, 7 tool onl y) fig. 2-4 fig. 2-5 1. Disassembling of main circuit board and interface board 1. Remove the top case.(see fig. 2-1) 2. Remove 12 screw...
2-4 exploded views 1. Cabinet and main frame section 280 465 467 465 465 463 a46 463 463 275 332 pbp00 pbt00 283 260 467 300 467 a48 a43 250 462 462 463 463 452 452 285 optional part scart a 5 4 3 2 1 b c d.
2-5 2.Packing accessory section battery 808 packing sheet 804 packing optional parts 803 806 owner's manual rf cable 810 cable set ass'y 801 remocon 900 box carton 802 packing 803 811 812 plug ass'y 1way plug ass'y 2way.
3-1 section 3 electrical contents electrical troubleshooting guide ......................................................................3-2 1. Power(smps) circuit ...............................................................................................................3-2 2. µ-com circuit........
3-2 electrical troubleshooting guide no 5v_d or 5v_a . No 5.2va. Is 5.2va section working? Is oscillation present at the base of q108? Replace q108. Check l103, c116. Replace r111. Replace bd101. (bridge rectifier) check fuse(f101). Is r111 1 Ω ? Check d105. Replace q101, 102. Is 5.2v applied to ic1...
3-3 replace ic506. Refer to front part check short reconnect it. 2. µ-com circuit a. No power does logo appear on the screen? Is oscillation of x501 normal? Are ic503 pins 14, 28 8 and 29 normal? Does no disc appear? Does hello appear at fld? Is p5901 connected normally? Is p5901 pin 23 normal? The ...
3-4 b. Audio abnormal d. Open/close abnormal check the connection of p5901. Check ic501 pins 13, 14. Check audio jack. Yes (if ok) yes no no yes yes (if ok) yes yes (if ok) yes (if ok) yes (if ok) check mpeg_clk signal of mpeg part. Refer to audio part. Refer to mpeg part. Replace b/d. Check front. ...
3-5 e. Picture abnormal check the disc. If ok yes (if ok) yes (if ok) refer to servo part check mpeg_clk signal of mpeg part check dsp check mpeg yes (if ok) replace b/d picture abnormal f. Disc error check disc yes (if ok) yes (if ok) refer to servo part replace b/d disc error.
3-6 power is on does logo appear on the screen? Does the moving picture of the dvd disc play on the screen normally? Is mpeg data signal normal? Is error signal normal? Is mpeg data signal normal? Is clock normal? Does the audio sound output from mpeg decoder? Does the moving picture of the video cd...
3-7 no no no start does remote control work normally? Do all the buttons work normally? Check waveform of ic901 pin 22. Check waveform of ic901 pin 26, 27. Is digitron on normally? Led on? Check waveform of ic901 pin 6. Is oscillation of x901 normal? Is waveform of ic901 pin 40 normal? Check wavefor...
3-8 does signal pulse input to ic201 pins 58, 59 when the power is on? Does signal goes "high" to ic201 pin194 when the power is on? Does ttl pulse output to ic201 pins 140, 142? Does 33.8688mhz clock input to ic201 pin 63? Is ic201 pins 83, 84, 88, 89 voltage about 2.2v? Replace ic201 (ic206 solder...
3-9 does tray open or close? Does the pick-up slide inner or outer track? Fig.1. Sled driver waveform fig.2. Focus driver waveform does the voltage change at pmd03 pins 1, 3 more than 2v on the basis of 3.8v? Pressing the open/close key repeatedly, check the voltage of ic2m1 pins 22 change 0v to 5v ...
3-10 focus on? Check the focus error moving the lens up and down. (ic2a1 pin 42) does the ttl level change at ic201 pin 78 and 132 moving the lens? Does the disc turn? Ic201 pin169 is "high"? Is ok the track jump. Does the signal pulse appear at ic2a1 pins 39, 29? Does the screen appear? Open/close ...
3-11 is the eye-pattern vivid? Does the sawtooth waveform emit at ic2a1 pin 41? Does the 1.6v emit? Check rf eye-pattern. Rf : 1.5-1.6v(ic2a1 pin 57) fig.5. Rf waveform check ic2a1 pins 5, 6, 7, 8. No signal: pick-up is defective replace ic201. Check ic201 pin84. No signal at ic201 : ic201 is defect...
3-12 block diagrams 1. Overall block diagram (t531c only) disc spindle mot or loading mot or focus, tracking sled vf+ vf- -24v 8v 5.2v a 5v_a 5v_d 3.3v_m 3.3v 2.5v 8v a.Gnd,d.Ngd,m.Gnd loading drive spindle loading cd,dvd:a,b,c,d,e,f mirr,tzc dvd_ldqm,dvd_sd,csi dvd_ma[0:1 1] dvd_md[0:15] dvd_sd_cas...
3-13 block diagrams 1. Overall block diagram (t531b, t531ah only) disc spindle mot or loading mot or focus, tracking sled vf+ vf- -24v 8v 5.2v a 5v_a 5v_d 3.3v_m 3.3v 2.5v 8v a.Gnd,d.Ngd,m.Gnd loading drive spindle loading cd,dvd:a,b,c,d,e,f mirr,tzc dvd_ldqm,dvd_sd,csi dvd_ma[0:1 1] dvd_md[0:15] dv...
3-14 2. Power(smps) block diagram rectifier(fld) rectifier line filter rectifier(14v) lpf reg(8v) reg(3.3v) reg(3.3v) pwr on/off f+ f- -24va 12va 8v 5.2va 5v_d 5v_a 3.3v 2.5v lpf rectifier(9v) rectifier(5.2v) 3.3v.M trans lpf feed b. Switching tr nad.
3-15 ic2a1 33p3721 rf signal processor ic206 dvdsp-3301 cd/dvd dsp dvd servo ic205 dram 256k x 16bit ic2m1 fan8727 spindlemotor,loadingmotor, actuator driver pick up dvd:a,b,c,d, fe,te,pi,sbadd sens,fok,sld_fg, msda t o,defect ,dsp_sense sqso,sqck,scor xla t ,s_clk,s_da t a dsp_cs,/wr,/rd do[0:7] ao...
4. Audio block diagram ic402 lpf &buffer njm4580d op amp ic401 pcm1716 audio dac u-com i/f dac_rst s_da t a s_clk dac_l0 da_lrck da_bck da_xck da_da t a0 mpeg i/f a/v jack i/f l r l r nad 3-16.
3-17 5. Mpeg block diagram dsp i/f ic301 ziva-4.1 mpeg a/v decoder ic303 gm72v1621 1m x 16bit sdram ic302 gm72v1621 1m x 16bit sdram ic304 tc7w04fu clock generatror 27mhz x-tal u-com i/f dvd_da t a[0:7] dai_da t a da_da t a[0:3] da_bck,da_xck,da_lrck spdif audio i/f a/v jack i/f mpeg_clk 8 sdclk1,zi...
6. µ-com block diagram av jack i/f ic506 xc9536 ic502 flash rom front i/f ic503 dram ic505 74hc374 ic501 sh6417034 mpeg i/f servo i/f dsp i/f ic504 eeprom 2402 16:9,system_sw ld_on,load close,mirr,act_mute load_open,spindle_fg,sld_fg, d[00:07],a[00:02],iic_clk,iic_da t a,sclk0, mpeg_rst ,mpeg_int ,v...
Notes) warning notes) parts that are shaded are critical notes) with respect to risk of fire or notes) electricial shock. Notes : symbol denotes ac ground. Symbol denotes dc chassis ground. Nad 3-19 3-20 circuit diagram 1. Power(smps) circuit diagram (t531b, t531c only) important safety notice when ...
3-21 3-22 notes) warning notes) parts that are shaded are critical notes) with respect to risk of fire or notes) electricial shock. Notes : symbol denotes ac ground. Symbol denotes dc chassis ground. Nad 1. Power(smps) circuit diagram (t531ah only) important safety notice when servicing this chassis...
3-23 3-24 5 5 6 tracking loop focus loop sled loop spindle loop waveform nad ic204 is defective. Scratched cd audio abnormal. Ic203 is defective. Ad converter error - no tracking/focus control 2. Dvd dsp circuit diagram.
3. Drive & rf circuit diagram 4 1 1 6 2 3 tracking loop focus loop sled loop spindle loop waveform nad 3-25 3-26 ic2a2 is defective. No fucus & tracking control. Q2a1, q2a2 are defective. Cd/dvd ld will not be on..
3-27 3-28 4. Mpeg circuit diagram • no dvd screen display • no vcd screen display. • no cd sound out. • no 2ch audio out • no 2ch audio out 1 7 2 4 3 5 6 waveform nad ic302, ic303 are defective. A/v out bad..
3-29 3-30 5. Audio dm circuit diagram 2ch l signal 2ch r signal ’01.09.10 r10674a nad q401 is defective. 2ch audio out bad. Ic403 is defective. Audio bad. Ic402 is defective. 2ch audio out bad. Ic401 is defective 2ch audio out bad.
3-31 3-32 6. µ-com/expander circuit diagram flash rom dram main cpu e x p a n d e r eeprom cpld nad servo will not operate x501 no power on video output level is unstable open, close error servo will not operate fld error.
3-33 3-34 7. Digitron(timer) & key circuit diagram p ause '01. 09. 10 r10675a nad ic902 is defective. Reset error. Rc901 is defective. R/c error. Dig901 is defective. Fld is distorted..
3-35 3-36 8. Scart circuit diagram s video (c) audio (l) audio (r) optical comp.Video s video (y) '01. 09. 10 r10676a nad 16:9 can’t be changed scart mode can’t be changed.
3-37 3-38 9. Jack circuit diagram s video (c) audio (l) audio (r) optical comp.Video s video (y) nad.
3-39 3-40 • circuit voltage chart ee play mode pin no. D s p ic201 sp3301 1 2 3 4 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2...
Ee play mode pin no. 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 0.00 0.54 3.10 3.10 0.00 0.00 0.00 0.67 3.10 3.10 0.00 0.00...
3-43 3-44 ee play mode pin no. 17 18 19 20 1 2 3 4 5 6 7 8 1 2 3 4 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 31 32 33 34 35 36 37 38 39 40 1.30 1.00 0.00 5.00 0.00 0.00 0.00 0.00 4.99 4.98 0.00 4.99 5.00 0.00 2.77 2.86 0.70 5.00 4.98 4.93 4.94 4.97 4.97 4.97 4.97 4.97 ...
3-45 3-46 • waveforms (circuit 3 drive & rf) ic2a1 pin 42, focus error ic2a1 pin 36, pi ic2a1 pin 41 tracking error ic301 pin 139 component y ic2a1 pin 41 vbr tracking error ic2a1 pin 57, rf ic201 pin 88, sled drive(fmo) ic201 pin 18, sled fg ic2a1 pin42, focus error(in focus search) ic201 pin 83, f...
3-47 3-48 printed circuit diagrams 1. Main p.C.Board location guide (solder side).
3-49 3-50 2. Power, a/v, front p.C.Board location guide.
3-51 3. Key p.C.Board 4. Power led p.C.Board (solder side) (solder side).
• top view..................................................4-1 • top view(without tray disc) .................4-1 • bottom view ...........................................4-1 1. Holder clamp....................................4-2 1-1. Clamp assembly disc .......................4-2 1-1-1. Plate clam...
4-1 deck mechanism parts location starting no. 1 1, 2 1, 2, 3 1, 2, 3, 4 1 1, 6 1, 2, 6 1, 2, 6, 8 1, 2, 6, 8, 9 1, 2, 7 1, 2, 7 1, 2 1, 2 ,13 1, 2, 13, 14 1, 2, 7, 12, 13, 14 1, 2, 13 1, 2, 7, 12, 13, 14, 15, 16, 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 holder clamp clamp assembly disc plate...
4-2 deck mechanism disassembly 1. Holder clamp (fig. 4-1) 1) release 2 screws(s1). 2) unhook 2 locking tabs(l1). 3) lift up the holder clamp and then separate it from the base main. 1-1. Clamp assembly disc 1) place the clamp assembly disc as fig. (a) 2) lift up the clamp assembly disc in direction ...
4-3 deck mechanism disassembly (c1) pick up assembly general gear assembly feed gear middle gaer assembly rack motor assembly spindle (l2) (s2) (s2) (s2) (s3) gear assembly rack gear middle gear assembly feed base pu(outsert) pick up assembly general motor assembly spindle rubber rear (s2) 3. Base a...
4-4 deck mechanism disassembly (b) (s5) (l6) (l4) (l5) (a) (l3) (a) (l6) (h1) (l6) fig. (b) guide up/down base main base main pwb assembly loading gear loading belt loading frame assembly up/down guide up/down guide up/down guide up/down (a) (b) (s4) fig. (c) fig. (a) (b) (c) gear pulley fig. 4-4 5....
4-5 deck mechanism adjustment 1. Tools and fixtures for svc • for svc program down-load • for t-skew and r-skew adjustment 2. Install process 1. Connect fig. 1, 2, 3 as fig. 7. 2. Plug out the power cord of dvd set. 3. Connect ffc cable(fig.2) to the connector on dvd set(fig.8) 4. Connect printer ca...
M e m o 4-6 deck mechanism adjustment 3. Adjustment procedure 1. Insert disc(only open/close key pressing) 2. Wait until the sector display is about 200,000 (fig.11) 3. Adjust r-skew adjusting point until the error rate has minimum rate with l-wrench (3mm). 4. Adjust t-skew adjusting point until the...
4-7 4-8 exploded views 1. Deck mechanism exploded view 002 001 003 004 429 429 026 018 008 009 016 012 430 430 430 432 020 430 011 017 014 013 015 431 a01 a02 a03 430
5-1 section 5 replacement parts list model : a:t531b , b:t531c , c:t531ah (nad) run date : 01.11.07 . Mechanical section nsp : not service part s al loca.No part no(lg) a b c description specification remarks assembly section a00 6721r-0322a o o o deck assy,video dp4 (mitsumi 2ld, bldc) nsp a01 4861...
5-2 s al loca.No part no(lg) a b c description specification remarks . Packing accessory section 801 3835rs0023f o instruction assembly dvn4021n aa1unn 801 3835rs0023z o instruction assembly dvn4021p aa3nn 801 3835rs0026p o instruction assembly dvn4021e aa2dnn_new 802 3890r-h762p o box dvn4021n aa1u...
5-3 . Electrical section nsp : not service part s al loca.No part no(lg) a b c description specification remarks capacitor c100 0ce1064k638 o o capacitor,fixed electrolytic 10m sra 50v m fm5 tp(5) c101 624-088l o o o capacitor,drawing 435d sunil electronics 0.1uf/2 c102 624-088l o o capacitor,drawin...
5-4 s al loca.No part no(lg) a b c description specification remarks c275 0ce1064f638 o o o capacitor,electrolytic 10m sra 16v m fm5 tp(5) c276 0ce1064f638 o o o capacitor,electrolytic 10m sra 16v m fm5 tp(5) c277 0ch1225f944 o o o capacitor,fixed ceramic(temp.C 2.2uf 16v 80%,-20% y5v(f) 3216 c278 0...
5-5 s al loca.No part no(lg) a b c description specification remarks c305 0ch1104k942 o o o capacitor,chip[ceramic m/l hd 0.1uf 50v z y5v(f) 1508 r/tp c306 0ch1104k942 o o o capacitor,chip[ceramic m/l hd 0.1uf 50v z y5v(f) 1508 r/tp c307 0ch1104k942 o o o capacitor,chip[ceramic m/l hd 0.1uf 50v z y5...
5-6 s al loca.No part no(lg) a b c description specification remarks c502 0ch1104k942 o o o capacitor,chip[ceramic m/l hd 0.1uf 50v z y5v(f) 1508 r/tp c503 0ch1104k942 o o o capacitor,chip[ceramic m/l hd 0.1uf 50v z y5v(f) 1508 r/tp c504 0ch1104k942 o o o capacitor,chip[ceramic m/l hd 0.1uf 50v z y5...
5-7 s al loca.No part no(lg) a b c description specification remarks d116 0dr104000aa o diode,rectifiers rz1040 bk sanken do41 40v 30a d2a1 0ds202009ca o o o diode,switching dan202k tp rohm korea sot23 80 d2a2 0ds202009ca o o o diode,switching dan202k tp rohm korea sot23 80 d601 0dd133009aa o diode,...
5-8 s al loca.No part no(lg) a b c description specification remarks l101 616-145l o filter(circ) ls-ai99f-009 fordgood l101 616-145m o o filter(circ),drawing v-04350 ls futai bulk =616-145 l102 633-088g o o o coil,choke chock(22mh) tp 5mm l103 633-088d o o o coil,choke chock ,20uh,lead cut l201 620...
5-9 s al loca.No part no(lg) a b c description specification remarks q401 0tr126709ac o o o transistor kta1267-gr mini tp kec q402 0tr126709ac o o o transistor kta1267-gr mini tp kec q403 0tr319909af o o o transistor,bipolars ktc3199-bl mini tp kec q404 0tr319909af o o o transistor,bipolars ktc3199-...
5-10 s al loca.No part no(lg) a b c description specification remarks r240 0rh0000c622 o o o resistor,metal glazed(chip) 0 ohm 1 / 16 w 1608 5.00% d r241 0rh0000c622 o o o resistor,metal glazed(chip) 0 ohm 1 / 16 w 1608 5.00% d r242 0rh0000c622 o o o resistor,metal glazed(chip) 0 ohm 1 / 16 w 1608 5...
5-11 s al loca.No part no(lg) a b c description specification remarks r2n6 0rh0000c622 o o o resistor,metal glazed(chip) 0 ohm 1 / 16 w 1608 5.00% d r2n8 0rh1002c622 o o o resistor,metal glazed(chip) 10k ohm 1 / 16 w 1608 5.00% d r2n9 0rh1002c622 o o o resistor,metal glazed(chip) 10k ohm 1 / 16 w 16...
5-12 s al loca.No part no(lg) a b c description specification remarks r409 0rd8201f608 o o o resistor,fixed carbon film 8.2k ohm 1/6 w 5.00% ta26 r411 0rd8201f608 o o o resistor,fixed carbon film 8.2k ohm 1/6 w 5.00% ta26 r412 0rd6801f608 o o o resistor,fixed carbon film 6.8k ohm 1/6 w 5.00% ta26 r4...
5-13 s al loca.No part no(lg) a b c description specification remarks r606 0rd1001f608 o o o resistor,fixed carbon film 1k ohm 1/6 w 5.00% ta26 r607 0rd1001f608 o o o resistor,fixed carbon film 1k ohm 1/6 w 5.00% ta26 r608 0rd1001f608 o o o resistor,fixed carbon film 1k ohm 1/6 w 5.00% ta26 r609 0rd...
5-14 s al loca.No part no(lg) a b c description specification remarks r999 0rd1002f608 o o o resistor,fixed carbon film 10k ohm 1/6 w 5.00% ta26 remote control receiver rc901 6712r1938ga o o o remote controller receiver tsop2838we1 temic 19mm 37.9khz switch sw601 6600r-sh02a o o switch,slide skq-23d...
Ser vice manual ser vice manual t531b t531c t531ah dvd video player models : t531b/t531c/t531ah ser vice manual © nad 2001 nad electronics international toronto t531b/t531c t531ah dvd video pla yer t531b/t531c t531ah dvd video pla yer.
