Nad ser vice manual c 730 stereo receiver c 730 stereo receiver.
2 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 m151 *ah 5120-0037-0 fu t3.15a 250v ul/csa 5x20mm m152 *c 5100-2530-1b t2.5a/250v iec m154 *ah 5120-0052-0 fuse t1....
3 specifications power amplifier section 1. Rated distortion (thd 20hz-20khz, 30w, 8 ohm) ≤ 0.08% (thd 1khz, 30w, 4 ohm) ≤ 0.1% 2. Input sensitivity (ref. 30w 8 ohm, 1khz) 350+/-30mv 3. S/n ratio (a-wtd, 1k ohm, 500mv cd in, 1khz) ≥ -85db 4. Frequency response (500mv cd in, 1w, 20hz-20khz) 0±0.8db 5...
4 fm tuner section frequency range: ah 87.5 - 108 mhz step 50 khz c 87.5 - 108 mhz step 50 khz input level is expressed as the reading in open-circuit of 75-ohm source impedance signal generator. *c *ah 1. Usable sensitivity (mono, 98mhz) ≤ 15dbµ ≤ 15dbµ 2. S/n ratio (60dbµ, ihf wtd) mono ≥ 72db ≥ 7...
5 rear panel / front panel rear panel front panel 1. Power on / off 2. Stand-by indicator 3. Blend 4. Memory 5. Fm mute / mode 6. Am / fm 7. Display 8. Preset / tune 9. Preset / tune and 10. Display area 11. Volume 12. Headphone socket 13. Input selectors 14. Bass & treble 15. Tone defeat 16. Balanc...
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...
7 block diagram am loop ant fm ant front end env172d3g1 vfd protect l r cpu key ma trix t rigger out remote sensor cd disc video aux t ape-1 out t ape-2 out tc9273 t ape-2 in pre out t ape-1 in (mon) s1 1 12 17 pll lc72723m am/fm if la1837 tuner diode ma trix nad link in-out main power suppl y speak...
8 wiring diagram main board transformer secondar y board key board psu board speaker board black 6pin black 6pin black 35pin black brown blue 3pin black 3pin black red ac input blue 3pin black 4pin black black black blue green tuner board power switch board phone board led board primar y board p32 p...
Osc rf testing point tp2 testing point tp1 testing point tp3 testing point tp4 9 adjustment points diagram 1. Tuner 2. Main board.
Fm signal generator output terminal output terminal distortion analyzer distortion analyzer ac voltmeter oscilloscope ac voltmeter or oscilloscope ac voltmeter or oscilloscope output terminal output terminal l r antenna terminal antenna terminal antenna terminal am loop antenna (accessory) am loop a...
11 fm/rds section input - fm mono: 1khz, 75khz devi., 60db/µv - fm stereo: 1khz, 67.5khz devi., 60db/µv pilot signal 19khz 7.5khz devi. Outputs - connect the non-inductive type resistor of 8 ohms to all speaker terminals otherwise noted. Item fm if/rf stereo distortion stereo separation muting level...
Pcb layout key board top view bottom view phone board led board secondary board primary board 12.
13 main board.
14 tuner board psu board power switch board speaker board.
16 15 main board schematic diagram note: 1. Resistors are carbon film 5% 1/8w unless otherwise specified. 2. Ceramic capacitors are 50v 10% unless otherwise specified..
17 18 tuner board note: 1. Resistors are carbon film 5% 1/8w unless otherwise specified. 2. Ceramic capacitors are 50v 10% unless otherwise specified..
19 key board s10 s11 s12 s13 s14 s01 s02 s03 s04 s05 s06 s26 s07 s08 s09 s15 s16 s17 s18 s19 s20 s21 s22 s23 s24 s01 s03 s04 s05 s06 s07 s08 s09 s10 s11 s12 s13 s14 s15 s16 s18 s19 s20 s22 s23 s24 s33 ac4v8_1 ac4v8_2 ac4v8_2 ac4v8_1 s25 s25 ac4v8_1 ac4v8_2 s02 s21 s25 s33 +13v standby relay s17 +5v ...
S37/pe5 p00 p01 p02 p03 p04 p05 p06 p07 vss2 p10/so0 p11/si0/sb0 p12/sck0 p13/so1 p14/si1/sb1 p15/sck1 p16/buz 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 s15/t15 s14/t14 s13/t13 s12/t12 s11/t11 s10/t10 s9/t9 s8/t8 s7/t7 s6/t6 s5/t5 s4/t4 s3/t4 s2/t2 s1/t1 s0/t1 65 66 67 68 69 70 71 72 73 74 75 ...
21 u202: 24c08 vcc 8 7 4 6 5 3 2 1 gnd wp scl load load inc data word addr/counter y dec x dec r/w comp serial control logic en h.V. Pump/timing data recovery eeprom serial mux d out /ack logic device address comparator start stop logic sda a2 a1 a0 d in d out 2 s1 1 v ss 26 v dd 27 s1 3 s2 26 s2 4 ...
22 u901: la1837 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 alc am osc am mix am rf.Amp reg agc am if am s-meter tuning drive stereo drive v cc v cc am/fm if-buff fm s-meter s-curve am if fm det gnd fm if input am mixer output fm if input byp ass am if input gnd ...
23 u903: lc7218 u902: lc72723m 1 xin reference divider swallow counter 1/16,1/17 4 bit 12-bit programmable divider shift register latch universal counter 1 2 phase detector charge pump 6 syc 24 xout 19 fmin 21 pd1 22 pd2 16 hctr 18 amin 15 lctr 2 ce 3 di 4 cl 3 v dd 4 v ss 5 do 9 out0 10 out1 11 out...
24 electrical parts list reference no. Part no. Description led assembly pcb board 01000 pcb-n0940c-led led assembly led d211 3700-3517-rg led red/green (l-469hgw) main assembly pcb board 02000 pcb-n0940c-main main assembly capacitors c330, c332 150f-104k-2-fc cc 50v 0.1µf 10% at c333 150f-223k-2-fd...
25 c833 150f-223z-5-ug cc 50v 0.022µf +80/-20% c840-c843 150f-101j-5-if cc 50v 100pf 5% rl 5x3.5 c844 153f-103j-5-im cm 50v 0.01µf 5% rl 5x7 c845 157b-107m-5-kmk ce 6.3v 100µf 20% rl c846 150f-223z-5-ug cc 50v 0.022µf +80/-20% c847, c848 157d-476m-5-imk ce 16v 47µf 20% rl c849-c852 157d-106m-5-iuk c...
26 q827, q828 485a-1939-5 tr 2sa1939-0 hfe 80-160 q829, q830 4860-0190-5 tr 2sc 1845 (f.E) rl q831 485c-123j-5 tr dtc123jsa rohm q832 4850-992f-5 tr 2sa992 hfe 300-600 q833, q834 4860-0190-5 tr 2sc 1845 (f.E) rl q835, q836 4851-241a-5 tr rn1241-a q837 485a-114e-5 tr dta114esa rohm q838, q839 4853-63...
27 r723, r724 4701-472j-c rcf 1/8w 4.7k 5% ats r725, r726 4701-103j-c rcf 1/8w 10k 5% ats r727-r730 4701-393j-c rcf 1/8w 39k 5% ats r731, r732 4701-121j-c rcf 1/8w 120r 5% ats r769, r770 4701-101j-c rcf 1/8w 100r 5% ats r801, r802 4701-272j-c rcf 1/8w 2.7k 5% ats r803, r804 4701-183j-c rcf 1/8w 18k ...
28 ics u303 3130-6650-0 ic 74ls00 quad 2-input u401 3130-8160-0 ic tc9273n analog switch u501 3130-0890-0 ic njm4558d dual op amp. U601 3130-2520-3 ic 7812 12v regulator u602 3130-3800-0 ic upc79m12hf regulator u603 3130-8190-0 ic njm78m56fa 5.6v u701 3130-3410-0 ic lb1642 motor driver u702,u703 313...
29 diodes d201 4804-1480-c diode 1n4148 ats d202 4804-0040-1 diode 1n4004 al d203 4837-5b61-2 dz 1/2w 5.45-5.73 rohm d204,d209,d210 4804-1480-c diode 1n4148 ats d211 4837-5b11-2 dz 1/2w 4.94~5.20v rohm d212 4804-1480-c diode 1n4148 ats coil l201 1801-220k-m coil 22µh 10% al bl7 infra-red sensor m218...
C110 157e-227m-5-pu ce 25v 220µf 20% rl diodes d101 4804-1480-c diode 1n4148 ats d102-d105 4804-0040-1 diode 1n4004 al relay m103 4500-0890-0 relay 12vdc,250vac,10a fuse m151 *ah 5120-0037-0 fu t3.15a 250v ul/csa 5x20mm m152 *c 5100-2530-1b t2.5a/250v iec m154 *ah 5120-0052-0 fuse t1.6a 250v 5x20mm ...
31 c946 157f-105m-5-gm ce 50v 1µf 20% rl 4x7 c947 157f-474m-5-gm ce 50v 0.47µf 20% rl 4x7 c948 157f-105m-5-gm ce 50v 1µf 20% rl 4x7 c949, c950 150f-223k-2-fd cc 50v 0.022µf 10% at c951 157f-225m-5-gm ce 50v 2.2µf 20% rl 4x7 c953, c954 150d-272k-2-fc cc 16v 2700pf 10% at c959, c960 157d-226m-5-gm ce ...
Tuner m986 1300-0726-0 tuner env172d3g1 transistors q901 *c 485c-945p-5 tr 2sc945p hfe 200-400 q902 4851-9230-5 tr 2sc1923-0 hfe 70-140 q903 485a-114e-5 tr dta114esa rohm q922, q923 4860-1590-5 tr 2sc1740s q942 4860-1590-5 tr 2sc1740s q943, q944 4860-8120-0 tr 2sd 1468 s q945, q980, q981 485a-114e-5...
33 r974 4701-104j-c rcf 1/8w 100k 5% ats r975 *ah 4701-223j-c rcf 1/8w 22k 5% ats r975 *c 4701-513j-c rcf 1/8w 51k 5% ats r981 4701-101j-c rcf 1/8w 100r 5% ats r983 4701-104j-c rcf 1/8w 100k 5% ats r984 4701-105j-c rcf 1/8w 1m 5% ats r985, r986 4701-102j-c rcf 1/8w 1k 5% ats r987 4701-102j-c rcf 1/8...
34 exploded view 1556 0162 0161 0130 0155 0152 0130 0130 0130 0134 0146 0145 0140 0140 0142 0130 0130 0130 0134 0128 0124 0120 j206c 0158 0301 0200 0125 0126 0122 0122 0123 0122 0117 0121 0116 0111 0110 0109 0113 0112 0107 0105 0104 0103 0108 0142 t901 0119 0115 0114 0118 0130 0130 0130 0136 0136 01...
35 item part no. Description qty 0101 *ah 1403-7071-0 rear panel c730 (ah) 1 0101 *c 1403-7072-0 rear panel c730 (c) 1 0102 1403-7080-0 top cover c730 1 0103 1403-7090-0 sub-fascia c730 1 0104 1403-7100-0 bottom cover c730 1 0105 1403-7110-0 bottom chassis c730 1 0106 1466-8200-0 fascia c730 1 0107 ...
0200 *ah 2113-1662-0 ac outlet 2 pin 15a 125vac (ah) 1 0301 3100-5101-0 pc sheet 50x7x0.25 1 1556 3100-3211-0 silicon sheet (26x20mm) 4 j206c 7010-1660-0 flexible cable 35p l220 p1.25 1 t901 1806-3546-0 x'former i/p 120/230v n094xc 1 36 note: - the components identified by mark are critical for risk...
37 packing diagram 45 44 43 36 37 38 36 41 42 40 39 46 item part no. Description q’ty 36 1490-3773-0 polyform endcap 2 37 1497-1332-1 unit polybag 1 38 1497-1442-0 fascia cover 1 39 4060-0530-0 batteries 2 40 2107-0661-1 300 ohm t antenna 1 41 8901-2950-0 remote control handset 1 42 2103-6101-0 *ah ...
Ser vice manual © nad 2001 c 730 stereo receiver nad electronics international toronto, canada.
