Nad-C-350-Service-Manual 电路图 维修手册.pdf

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2、7 n, / nzot z 15K ) : : : , D 1 1 3 7 tx+t.a .7 1/1W R207 10/tw | 100N/63V v 4 _J_ C127 R221 1.3K 100N/63V 1106 1uH D114 7 rruaral 613s -14-50v Q406 A1015 1-c147 | 10u/25 v R237 l+ 47K zl- C148 | 10u/25v v D1t6 tN4146 R235 330K + c150 -L / l + 10u/25V R240 1 K Q139 BD1 39 R272 looK R2zg 7 220K R274

3、o147 A1015 R270 100K 56K 680 680 Q 1 4 1 Cj53 C1815 22Oul50V cT401 c154 220u150V R254 4142 41015 R2s6 680 R271 100K c1 65 22N163V J Q140 BD140 c420 t l t t o 3 l v tr7 c350 r-JF-r + 103 rh c351 -lFr t 1 0 3 1 v t7f N10C350F01 D402 Il tN5402 a-4-1 I R t 1 5 | 0. /1w F 416 0.1/1W R413 2K2 . STANDBY il

4、tv l DGND I a.AcoFF l 2 3 4 4P3.96-C TO22A TO92 TO9Z NOTE: 1. RESISTORS ARE CARBON FILM ,1/4W 5% UNLESS SPECIFIED. FP- FLAME PROOF 5%, FS-FUSIBLE 5% MF - METAL FILM 2%. CE-CERAMIC CASE 5% 2, ALL CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 50V, 206 3. FUSE F4O3C IS ONLY FOR C VERSION CIRCUIT AND FUSE

5、 F4O3AH IS ONLY FOR AH VERSION CIRCUIT. ADJUST VR104 LETVOLTAGE BETWEEN T101 AND T102 :5-6.5mV ADJUST VR103 LET VOLTAGE BETWEEN T103 AND T104 :5-6.smv 0C35r)F05 - 1(f - RadioFans.CN 收音机爱 好者资料库 scH EMATIC DIAGRAM(AMP) R141 _l: c113 100 .1-t 100u/63V D105 | -_N_ Vz R12s _lj10e 33 -Irsp c117 + N =. c11

6、9 + 1 0 0 1 R109 | 22K c1o5 | 47OP I aJr-J-l r r o 1 o 3 l c2240 R1t3 Rt2l 6K8 | 1oo -r- v t ( D103 (Rtts rN4148 2 gsr -N- A D1 09 | 1N4148 -Ja 61.15 R13O I C110 c 1 1 8 : l P N c120 + l t F -lH 47oP c1;4-o c1815 R149 a t00/1 rLr R199 1K2t2W A c133 22OOul6 I e R201 15K Q133 4101 5 100N D 1 1 3 lN41.

7、8 - | 100N/6 v A AV104F L I N R128 39K c108 h) ct3t R2091 R21 q D 1 1 4 tN4t43 c138 ,.4,r A fira.aetzsov-sor-oaau I l CONNECTERS N10C350F08 N10C350F04 D4o2 l:l tN5402 R407 R4OaR.t15 0. nw F BL(AH) A ACOUT (AH) I 0.1/1W R414 220 o406 4101 5 A a A Q40r A101 t ACIN wBo1H5-001 N10C350F09 /T 2200u/50V I

8、V | + c502 L C U C . 100u/16V c2403 4P-2.54-C I c514 103 R505 100 D10C350F05 E EEI E E E EE EEI r- .a - 1 4 v 1 4 3 2 I -i- .-9-EwI- :-sr -J 4FcT40 .54-A SHORT THERMAL FUSE IN TMNSFORMER cT501 8P2.54-A1 208 - 1(f - RadioFans.CN 收音机爱 好者资料库 SCH EMATIC DIAGRAM(PREAMP) AV101C AV1 01 E VIDEO AV102C TUNER

9、 AV102E TAPE2 AV103A REC2 AV103C TAPEl AV103E RECl AV1 01 F VIDEO AV102D TUNER AV102F rAPE AV103F neq(t 470 R330 tM R314 470 R332 1 M s- 1316 470 R334 1 M R318 lOOP L.CH INPUTS ,R341 ,3K3 : ts ns+sQ 820 t! a U g N - o ,R351 2K2 VR3O2A ,10KA t- q q a R353 560 18N/63V/5% C330 220N163Vt5% l-u-ora8 Low

10、NotsE AMp MIDULE - +t8V vR303A / 20KB/ D301 D302 D303 D304 D3o5 1 N4148 ,t N4148 1N4.t48 1 N4148 1 N4148 470 R321 1 M R305 470 R323 1 M R307 470 R325 1 M R309 470 R327 1 M R31 1 470 R329 1 M R3r3 470 R33 t 1 M R3t5 470 R333 1M R317 470 R335 1M 7 AV105A t t N AV105B our D306 1 N4148 +l8V c321 It-N I

11、V 47ul25V cH301 UJ l l! q, a i ! tM R306 470 R324 1 M R308 470 TRxMrnE- - l c322 47ul25V u NOTE: 1. RESISTORS ARE CARBON FILM 1/4W 5% UNLESS SPECIFIED. MF - METAL FILM 2OlO 2, ALL CAPACITORS, UNLESS OTHERWISE SPECIFIED, ARE 5OV, 20% 3.CD BEING SELECTEO -11 - NAD C35O PRE-AMP N8C350F01 SCHEMATIC DIAG

12、RAM(KEY BOARD) r a 6 t s 9 h t 6 N i V E b; IJJ -J a A - a r3 3: z i 9 fi $F $F 3 b U O 3otrft :Rf ? 6 f ? sgr= S f , t ! . !xls HFS$ !=t s$H :$:i e* Q =: I5; :5 5 _:u55 Fi$ o A o o bx= -*Egi$ q i a E , U z: o o e 6 l $ l q E s l = l U z: a l E s; N J 9 X $ 8 N ! 9 X o t 9= 6 ul 3 Y 8 6 z O o z I I

13、t, I I I N O c3lMd lf-ltr, t t o N o 3 F o z o N x N N N a = orur exraarc uos 3 Nt, qo - l l : F 3 R P e - O O Y N tr N R - R B S 6 8 N q a a d 6 a 4 4 a * - - - I ddddvqrh; AilddXXdd = F N J E T 9s as lr, C I Y N rls rO a z o .IJ O Eo rO 90 90 rO 8O so s! = $= BF $* B $ ; I=B d F - = I 3 l S ,u* lj

14、K: afuu: -l o t I l o t 3 r l 8 |: t l l - l r L-lz irrtr/ f: T*KE- o l x 5 _qi_ f.-lt l r 4 s ll -E t t t s u | 5? - l u I I -12- ALIGNMENT PROCEDURE l. lNlTlAL ADJUSTMENT (No load connected) A. OUTPUT OFFSET VOLTAGE 1. Connect a DC Millivoltmeter to L Channel speaker output terminals. 2. Turn unit

15、 ON and adjust VR102 (1 kohms) to get a reading of 0V+/-30 mV. 3. Connect the DC Millivoltmeter to R Channel speaker output terminals and adjust VR 101 (lkohms) to get a reading of 0 V+/-30 mV. B. IDLING CURRENT 1. Leave power ON for a minimum of 5 minutes. 2. Connect a DC Millivoltmeter to T101 and T102 and adjust VR104 (300 ohms) for 5- 6.5 mV reading on meter. 3. Connect a DC Millivoltmeter to T103 and T104 and adjust VR|03 (300 ohms) for 5- 6.5 mV reading on meter. II. FINAL ADJUSTMENT Repeat procedure A and B for offset voltage and idling current alignment respectively. -6-