NAD-275BEE-pwr-sm 维修电路原理图.pdf

《NAD-275BEE-pwr-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《NAD-275BEE-pwr-sm 维修电路原理图.pdf（36页珍藏版）》请在收音机爱好者资料库上搜索。

1、LAUNAMECIVRESLAUNAMECIVRESC275BEE C/AH? NAD 2010NAD ELECTRONICS INTERNATIONALTORONTOC275BEEHA/C STEREO AMPLIFIERC275BEEHA/C STEREO AMPLIFIERSTEREO AMPLIFIERRadioFans.CN 收音机爱 好者资料库CONTENTS FRONT PANEL/REAR PANEL VIEW? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

2、 ? ?3 SPECIFICATIONS? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 4 ALIGNMENT PROCEDURE/ALIGNMENT POINTS? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?5 WIRING DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

3、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?6 SCHEMATIC DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?7-12 PCB LAYOUT? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

4、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 13-18 ELECTRICAL PARTS LIST? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?19-32 EXPLODED VIEW? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

5、? 33 EXPLODED VIEW PARTS LIST? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?34 PACKING DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 35 SERVICE SAFETY PRECAUTIONS 1. Replacing

6、 the Fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. REFERENCE NO. PART NUMBER DESCRIPTION Rear Panel AH A20-12103-00 Littelfuse618 T10AL/250V C A20-12702-20 Littelfuse618 T5AL/250V STANDBY Board F401 A20-12102-00 Littelfuse618 T1AL/250V NOTE: *A

7、H : North American version only *C : European version only 2. Safety-check out (North American model only) Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit. Parts marked with

8、 the symbol are critical with regard to the risk of fire and electric shock.Replace only parts recommended by the manufacturer. - 2 -RadioFans.CN 收音机爱 好者资料库? ? ? ? ? ? ? ? ? ?- 3 - FIXED IN, SPEAKER OUT Continuous average power , stereo,8 and 4 ohms at rated thd ,20-20k 150W Continuous average power

9、 8 ohms , bridge mode 330W Rated thd, 20-20k, SMPTE and CCIF IMD, DIM 100 170W IHF dynamic power 8 ohms 250W IHF dynamic power 4 ohms 410W IHF dynamic power 2 ohms 600W IHF dynamic power 8 ohms(Bridge Mode) 800W IHF dynamic power 4 ohms(Bridge Mode) 1200W Peak output current 1msec, 1 ohm 50A S/N A w

10、td re 1 W 102 dB S/N A Wtd re 150W 123 dB Damping factor ( re 8 ohms, 50 Hz and 1kHz) 180 Frequency response 20-20k 85 dB 10kHz 75 dB Minimum Input Level for AUTO TRIGGER 1mV at 1KHz Time to power OFF at no signal in AUTO mode 10 minutes Rated power ( 230 or 120 V AC 50.60 Hz) 312 W Standby power 1W

11、 Idle power 100W Net weight 14.6 kg Shipping weight 16.9 kg Dimensions 435x133x352 mm - 4 -SPECIFICATIONSA. DC OFFSET VOLTAGE The DC OFFSET between OFFSET Test Point and AGND must be within 0+/-20mV. B. IDLING CURRENT The idling current in the output stage of the poweramp should be set to 30mA+/-5mA

12、 per pnp-npn transistor pair (This means the mid point voltage is 6.6mV with down limit of 5.5mV and up limit of 7.7mV). The alignment procedure is: At first, adjust RV102 (Marked as “Idling Current ADJ” in the drawing below) for a voltage of 6.6mV +/- 1mV between Test point 1 and 2. Then preheat th

13、e unit for 1 minutes, let idling current settled and then readjust to 6.6mV +/- 1mV. This is a no-load adjustment. Pls note: Though the idling current is set as 6.6mV +/-1mV during the adjustment, due to the influence of varied ambient temperature and mains voltage etc., the idling current will drif

14、t after some time. During the normal checking of idling current in the service field, its acceptable as long as the voltage is in the range of 5.5mV7.7mV C. ISC SENSITIVITY The ISC sensing voltage can allow 0mV+/-50mV. But, for the alignment process in our factory, we tighten the limit to 0mV+/-10mV

15、. That is to adjust Pot RV103 (as marked as “ISC SENS ADJ” in the below drawing) to get a voltage between the “ISC SENSE TEST POINT” and AGND to be 0mV+/-10mV. - 5 -ALIGNMENT PROCEDURELEFT POWERAMP BOARDRIGHT POWERAMP BOARDPAD6PAD3PAD2PAD5PAD4FROM PAD1-6FROM P208AFROM P206BFROM P204ATO LEFT P101BTO

16、LEFT P103BTO P901BTO L&R P102BTO P402BFROM P901AFROM XFORMERFROM XFORMERFROM XFORMERFROM XFORMERFROM REAR PANEL L&NTO RIGHT P103BTO RIGHT P101BFROM P207BFROM P205AFROM P208AMAIN BOARDBINDING POST BOARDSTANDBY BOARDDISPLAY BOARDPAD1FROM P902ATO P203BAC INLETAC INLET12P902AP902AP402BP402BJ401J401P102B

17、P102BP404BP404BP205AP205AP102BP102BP201BP201BP101BP101BP901BP901BP101BP101BP204AP204AP202BP202BPOWER SWITCHPOWER SWITCH12P208AP208AJ402J402P206BP206BP203BP203BP207BP207BP103BP103BP103BP103BP403BP403BP901AP901A- 6 -WIRING DIAGRAMISCBIRIDGESCN/MUTEGNDOUTINISC TPPROTECTOffset TPFBTP2SCPO/PTP1-15VVCC+80

18、VVSSVCC-80V+15V-15V-15VVCC+15V+15V-15V+15V+80V-80V111/5W/5W/5W/5WTO MAIN BOARD/1%/1KV/100V/1W/1/4W/100V/1W/1%/1W/1%/1W/1%/1%/1/2W/1%/1W/1%DC SERVO/100V/3W/1W/1%/1KVTO MAIN BOARDAll Polyester capacitors are 63V 10% unless noted.All Elec. capacitors are 50V 20% unless noted.All Resistor are 1/6W 5% RJ

19、13 unless noted.All Zener diode are 1/2W unless noted.ISC COMPARATOR/3W/3W/1%/1KV/1KV/1KV/25V/25V/1/2WMPSA42MPSA92bceMPSA06MPSA562SA21212SC5949KSA1220AKSC2690Abcebcebc/1/4We/1/4W/1/4W2SA1013/1/4W/1/4W2SC2383/1/2W/100V/1KV/1KV/5W/1KV/1%/1/4W/1%/3W/1%TO MAIN BOARDcbe/1/2W/5W/1/4W/1/2W/250V/1%/3W2SA970

20、2SA10152SC18152SC2240TEST POINT/5W/1KV/1/4W/100V/1%/100V/1KV/1%/250V/5W/100V/100V/1KV/1KVQ152 mount tomain heatsink/2W/1%/1%/1%/1%C138220pFC138220pFD1161N4148D1161N4148C151100nFC151100nFR13936KR13936KR195100R195100P102B5PIN2.54-CP102B5PIN2.54-C12345R1720.22R1720.22R19410R19410+C10710uF+C10710uFD122N

21、.I.D122N.I.R18622KR18622KR1G31KR1G31KR1E4100R1E4100R191100R191100C11247pFC11247pFR199220R199220Q1442SC5949Q1442SC5949R107100R107100Q1112SA970Q1112SA970R12082R12082C12222pFC12222pFC102100nFC102100nFR103549R103549+C15747uF+C15747uFR11624KR11624KR1730.22R1730.22Q136KSC2690AQ136KSC2690AR1352.2KR1352.2KD

22、1171N4148D1171N4148R1541.2KR1541.2KR16233R16233R11239KR11239KD1031N4148D1031N4148+C13047uF+C13047uFR1A6100KR1A6100KC155100nFC155100nFC12322pFC12322pF+C14310uF+C14310uFD1141N4148D1141N4148D1301N4148D1301N4148R18347KR18347KR1A124.3KR1A124.3KQ1052SA1015Q1052SA1015D1271N4148D1271N4148Q133KSC2690AQ133KSC

23、2690AR160100R160100R1691R1691R11482R11482C135100nFC135100nFCWRV10310KCWRV10310K132R1322.2KR1322.2KQ1412SA2121Q1412SA2121C127100nFC127100nFR1F64.7megR1F64.7megR1413.9KR1413.9KQ1482SC2240Q1482SC2240R12910R12910R11939KR11939KD1071N4148D1071N4148R1E21megR1E21megR1591KR1591KR12810R12810R12710R12710C13447

24、0pFC134470pFQ1192SA1013Q1192SA1013C124430pFC124430pFP103B5PIN3.96-CP103B5PIN3.96-C12453R193100R193100Q1022SA970Q1022SA970R1G51megR1G51megQ1042SC2878Q1042SC2878+C1414.7uF+C1414.7uFR15010KR15010KG1G1N.I.G1G1N.I.1Q1122SC2240Q1122SC2240+-IC104BTL084CN+-IC104BTL084CN567R14810KR14810KR1E9330KR1E9330K+C105

25、10uF+C10510uFR1810.22R1810.22Q1032SC2240Q1032SC2240Q131KSA1220AQ131KSA1220AD1151N4148D1151N4148Q135KSC2690AQ135KSC2690AR122100KR122100KQ101KSC2690AQ101KSC2690AR15110KR15110KR1F122KR1F122K+-IC104ATL084CN+-IC104ATL084CN321411C142100nFC142100nFR11715R11715Q1162SA970Q1162SA970R13810KR13810KCWRV102500CWR

26、V102500132Q138KSA1220AQ138KSA1220AR196100KR196100KR18833KR18833K+C10810uF+C10810uFQ149MPSA92Q149MPSA92R1F5270KR1F5270KQ1212SC1815Q1212SC1815R1554.7R1554.7D1051N4148D1051N4148R1A8220R1A8220Q1292SA970Q1292SA970Q147MPSA92Q147MPSA92R18922KR18922KQ1392SA2121Q1392SA2121R124100KR124100KR1F210KR1F210KQ132KS

27、C2690AQ132KSC2690AC11633pFC11633pFR17610KR17610KR1651R1651R16722R16722+C12510uF+C12510uF+-IC104DTL084CN+-IC104DTL084CN121314R10210KR10210K+C14610uF+C14610uFD124N.I.D124N.I.CB101ST-22 90C L TYPECB101ST-22 90C L TYPE12+C14510uF+C14510uFR1443.3R1443.3+C10310uF+C10310uFD11118VD11118V+C15010uF+C15010uFR1

28、614.7R1614.7Q1172SC2240Q1172SC2240R1A410R1A410R1332.7KR1332.7KR1E124.3KR1E124.3K+-IC104CTL084CN+-IC104CTL084CN1098R158910R158910P104A5PIN2.54-CP104A5PIN2.54-C13245C154100nFC154100nFR1H31KR1H31KR1E5100R1E5100+C11510uF+C11510uFR1981KR1981KQ150MPSA92Q150MPSA92R105100R105100C110100nFC110100nFR1301KR1301

29、KQ1302SC2240Q1302SC2240D109BAV21D109BAV21IC101TL431IC101TL431231+C11810uF+C11810uFD121N.I.D121N.I.R1790.22R1790.22R111100R111100Q1152SA970Q1152SA970R16418R16418D1061N4148D1061N4148C139100nFC139100nFR184470R184470Q1202SC2383Q1202SC2383R1E30.05R1E30.05C144100nFC144100nFQ137KSA1220AQ137KSA1220ACB102ST-

30、22 80C L TYPECB102ST-22 80C L TYPE12Q1062SC2878Q1062SC2878+C10910uF+C10910uFC128100nFC128100nFP101B11PIN2.54-CP101B11PIN2.54-C1234567891011R1A27.32KR1A27.32KR1A97.32KR1A97.32KR1G2220KR1G2220K+C11110uF+C11110uFR10924KR10924KR17810KR17810KR1463.9KR1463.9KR113220KR113220KL103100uHL103100uHR17710R17710C

31、113120pFC113120pF+C11410uF+C11410uFR1740.22R1740.22R18547KR18547KIC103TL431IC103TL431231R1433.3R1433.3D1121N4148D1121N4148R1403.9KR1403.9KC126100nFC126100nFR1573.3KR1573.3KR1N2N.I.R1N2N.I.C153N.I.C153N.I.R1N1100R1N1100D1131N5404D1131N5404D1252.4VD1252.4VR12382R12382R1N81KR1N81KD110BAV21D110BAV21Q114

32、2SC2240Q1142SC2240D1206.8VD1206.8VR125200R125200C101100nFC101100nFR1F410KR1F410KR1872.2KR1872.2KR192100R192100Q1452SC5949Q1452SC5949R145330R145330R134N.I.R134N.I.R17018R17018L10210uHL10210uHC148470nFC148470nFR1E8100KR1E8100KR131N.I.R131N.I.R1681R1681Q1462SC5949Q1462SC5949Q1182SA1015Q1182SA1015R1H263

33、.4R1H263.4R11515R11515R14910KR14910KL10110uHL10110uHR1F310KR1F310KR142330R142330R1361KR1361KR1101KR1101KR1F8390KR1F8390KC131100nFC131100nFR1820.22R1820.22C10433pFC10433pFR1800.22R1800.22R1531.8megR1531.8megR1F9110KR1F9110KC132220pFC132220pFR1F7470KR1F7470KQ1512SC1815Q1512SC1815R1750.22R1750.22CWRV10

34、4100CWRV104100132+C15847uF+C15847uFR15633R15633Q1432SC5949Q1432SC5949C149470nFC149470nFR1E7560KR1E7560KD119BAV21D119BAV21R17115R17115R1661R1661R1A3100R1A3100Q1132SC2240Q1132SC2240R1041KR1041KQ1402SA2121Q1402SA2121R108100R108100R1473.9KR1473.9KD1041N4148D1041N4148R12610R12610C152100nFC152100nFR19010K

35、R19010KC12122pFC12122pF+C14710uF+C14710uF+C11910uF+C11910uFIC102TL431IC102TL431231Q1082SA970Q1082SA970R118220KR118220KR1H110KR1H110KD118BAV21D118BAV21D123N.I.D123N.I.Q152KSC2690AQ152KSC2690AD1021N4148D1021N4148R12182R12182R16315R16315D1291N4148D1291N4148R1G41megR1G41megR1A5100KR1A5100KR1371.5KR1371.

36、5KR10624KR10624KR101475R101475+C12947uF+C12947uFR1N71KR1N71KR1E69.1KR1E69.1KQ1422SA2121Q1422SA2121R1G1100KR1G1100KQ109KSA1220AQ109KSA1220AD1281N4148D1281N4148D1081N4148D1081N4148+C12010uF+C12010uFD1011N4148D1011N4148R197100KR197100KQ1222SA970Q1222SA970Q1072SC2240Q1072SC2240C136470pFC136470pFD1261N41

37、48D1261N4148C156N.I.C156N.I.R152845R152845TP2AGND TP- 7 -SCHEMATICS DIAGRAMVCCISCBRSCN/MUTEPROTECT LSCPISCRELAYSCN/MUTEPROTECT RSCPL O/PR O/PVSSBRIDGE12V TRIG INDGNDMUTESEN DEFEATSC LEDTRIG ENABLEPROTECTSIGNAL+15VAGND+5VBG LED+26V-80V+80V+15V+80V-80V+15V-15V+80V-80V+15V-15VVCCVSS-15V-26V-26V+36V+36V

38、+36V+26V-26V+5V+5V+5V+15V+5V+26V+5V/100V/100V/250V/100V/100V/250V/100V/100VFROM MAIN TRANSFORMER/250V/250VFROM MAIN TRANSFORMER/16V/16VTO LEFT POWERAMPTO RIGHT POWERAMP/1%/1%/1%/1%/1%/1%/1/2W/1/2WSOFT CLIPPING/50VBRIDGESTEREO POSITIONNORMAL POSITION/2W/160V/160V/250V/250VFOR BR201&TH201FOR BR202&TH2

39、02FOR IC201&IC202FOR IC203&IC204SPEAKER ASPEAKER B/1W/1%/1%/1%/1%/1%/1%/1%/1%/1KV/1KVTO L/R POWERAMPBOARD P102BBRIDGESTEREO POSITIONTO DISPLAY BOARDAll Polyester capacitors are 63V unless noted.All Elec. capacitors are 50V unless noted.All Zener diodes are 1/2W unless noted.All Resistor are 1/6W unl

40、ess noted./1KV/1KV/1WSENSE DEFEAT+12V TRIG IN/6.3VFixed/Variable In FIXED POSITIONTO LEFT POWERAMPTO RIGHT POWERAMPINPUT SIGNAL/6.3V/3WAll Polyester capacitors are 63V 10% unless noted.All Elec. capacitors are 50V 20% unless noted.All Resistor are 1/6W 5% RJ13 unless noted.All Zener diode are 1/2W u

41、nless noted.+C23610uF+C23610uFR254330KR254330KR218240R218240R2124.7KR2124.7KR2363.3R2363.3+C2122200uF+C2122200uFR22424.9KR22424.9KC25210pFC25210pFR2271KR2271KC220100nFC220100nFC21010nFC21010nFP208A8PIN2.54-A200BP208A8PIN2.54-A200B23415678R230100KR230100KD2141N4148D2141N4148R22256KR22256KR262N.I.R262

42、N.I.C239N.I.C239N.I.R2251KR2251KC226100nFC226100nFR214240R214240R2292.2KR2292.2KR240820R240820IC201NJM317FIC201NJM317FO2I3ADJ1D2151N4148D2151N4148R2152.67KR2152.67KIC204LM337TIC204LM337TO3I2ADJ1C230100nFC230100nFL2011uHL2011uHR2414.7KR2414.7KCWRV201A1KACWRV201A1KA312C20910nFC20910nFRL202AJQX-115F/03

43、6/1HS1RL202AJQX-115F/036/1HS134D2021N4148D2021N4148R263220R263220D2091N4148D2091N4148S204BSK-22F03-G7S204BSK-22F03-G7456P206B11PIN2.54-CP206B11PIN2.54-C1234567891011R24810KR24810KD2051N4148D2051N4148PAD6Solder PadPAD6Solder PadL2021uHL2021uHQ2062SA1015Q2062SA1015R20222KR20222K+-IC206ATL082CP+-IC206A

44、TL082CP321PAD2Solder PadPAD2Solder PadR2061KR2061KR251100KR251100KR23422KR23422K+C21810uF+C21810uFR24410KR24410KPAD5Solder PadPAD5Solder PadR253100KR253100KR2081KR2081KHS20270-004003-1HS20270-004003-1C227100nFC227100nFR2661megR2661megRL202BJQX-115F/036/1HS1RL202BJQX-115F/036/1HS112HS20370-004003-1HS

45、20370-004003-1R25510KR25510KR24210KR24210KPAD4Solder PadPAD4Solder PadR2114.7KR2114.7KR220N.I.R220N.I.D2181N4148D2181N4148C259100pFC259100pFR257100KR257100K+-BR201KBU8D+-BR201KBU8D+C20410uF+C20410uFRCA201B2 HOLESRCA201B2 HOLES23R252100KR252100KS202ASK-22F03-G7S202ASK-22F03-G7123P201B5PIN3.96-CP201B5

46、PIN3.96-C12453+C25310uF+C25310uFC206100nFC206100nF+C20310uF+C20310uF+C25010uF+C25010uFPAD3Solder PadPAD3Solder PadR23222KR23222KR26747KR26747KR2051KR2051K+C2132200uF+C2132200uFQ204MPSA42Q204MPSA42D2131N4148D2131N4148TH202BT151-500RTH202BT151-500R312R23810KR23810KR261N.I.R261N.I.RL201BJQX-115F/036/1H

47、S1RL201BJQX-115F/036/1HS112+C23510uF+C23510uFD2201N4148D2201N4148+C21910uF+C21910uF+C25510uF+C25510uFS204ASK-22F03-G7S204ASK-22F03-G7123C205100nFC205100nFC234220nFC234220nF+C244100uF+C244100uFC24310pFC24310pF+C2281000uF+C2281000uFC249100nFC249100nFD20424VD20424V+C21610uF+C21610uFR24910KR24910KC22110

48、0nFC221100nFR217240R217240S201SK-22F03-G7S201SK-22F03-G7564123R22324.9KR22324.9KP204A5PIN3.96-AxxBP204A5PIN3.96-AxxB12345R24310KR24310KR2261KR2261KQ2052SA1015Q2052SA1015R260330KR260330KC260100nFC260100nFR2651megR2651meg+C21710uF+C21710uFP202B5PIN3.96-CP202B5PIN3.96-C12453S202BSK-22F03-G7S202BSK-22F0

49、3-G7456C20210nFC20210nFD2171N4148D2171N4148C258100pFC258100pFS203SK-22F03-G7S203SK-22F03-G7564123R210220KR210220KC256100nFC256100nFR258100KR258100KR20322KR20322KR2373.3R2373.3C23710nFC23710nFD2111N4148D2111N4148R239180R239180+C22510uF+C22510uFC247100nFC247100nFC214100nFC214100nF+-IC206BTL082CP+-IC20

50、6BTL082CP56784P203B12PIN2.54-CP203B12PIN2.54-C123456789101112Q2072SC1815Q2072SC1815D2011N4007D2011N4007R2G10R2G10P205A5PIN3.96-AxxBP205A5PIN3.96-AxxB12345+C24510uF+C24510uFCWRV201B1KACWRV201B1KA645R2314.7KR2314.7KR23333KR23333KR2452.2KR2452.2KR209100R209100RCA201A2 HOLESRCA201A2 HOLES13R264220R26422