NAD-275BEE-pwr-sm 维修电路原理图.pdf

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? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?3 SPECIFICATIONS? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 4 ALIGNMENT PROCEDURE/ALIGNMENT POINTS? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?5 WIRING DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?6 SCHEMATIC DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?7-12 PCB LAYOUT? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 13-18 ELECTRICAL PARTS LIST? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?19-32 EXPLODED VIEW? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 33 EXPLODED VIEW PARTS LIST? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?34 PACKING DIAGRAM? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 35 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 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: *AH : 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 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 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 wtd 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 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 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 the 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 drift 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. 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 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 INLET12P902AP902AP402BP402BJ401J401P102BP102BP404BP404BP205AP205AP102BP102BP201BP201BP101BP101BP901BP901BP101BP101BP204AP204AP202BP202BPOWER SWITCHPOWER SWITCH12P208AP208AJ402J402P206BP206BP203BP203BP207BP207BP103BP103BP103BP103BP403BP403BP901AP901A- 6 -WIRING DIAGRAMISCBIRIDGESCN/MUTEGNDOUTINISC TPPROTECTOffset TPFBTP2SCPO/PTP1-15VVCC+80VVSSVCC-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% RJ13 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%/3W2SA9702SA10152SC18152SC2240TEST 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.I.D122N.I.R18622KR18622KR1G31KR1G31KR1E4100R1E4100R191100R191100C11247pFC11247pFR199220R199220Q1442SC5949Q1442SC5949R107100R107100Q1112SA970Q1112SA970R12082R12082C12222pFC12222pFC102100nFC102100nFR103549R103549+C15747uF+C15747uFR11624KR11624KR1730.22R1730.22Q136KSC2690AQ136KSC2690AR1352.2KR1352.2KD1171N4148D1171N4148R1541.2KR1541.2KR16233R16233R11239KR11239KD1031N4148D1031N4148+C13047uF+C13047uFR1A6100KR1A6100KC155100nFC155100nFC12322pFC12322pF+C14310uF+C14310uFD1141N4148D1141N4148D1301N4148D1301N4148R18347KR18347KR1A124.3KR1A124.3KQ1052SA1015Q1052SA1015D1271N4148D1271N4148Q133KSC2690AQ133KSC2690AR160100R160100R1691R1691R11482R11482C135100nFC135100nFCWRV10310KCWRV10310K132R1322.2KR1322.2KQ1412SA2121Q1412SA2121C127100nFC127100nFR1F64.7megR1F64.7megR1413.9KR1413.9KQ1482SC2240Q1482SC2240R12910R12910R11939KR11939KD1071N4148D1071N4148R1E21megR1E21megR1591KR1591KR12810R12810R12710R12710C134470pFC134470pFQ1192SA1013Q1192SA1013C124430pFC124430pFP103B5PIN3.96-CP103B5PIN3.96-C12453R193100R193100Q1022SA970Q1022SA970R1G51megR1G51megQ1042SC2878Q1042SC2878+C1414.7uF+C1414.7uFR15010KR15010KG1G1N.I.G1G1N.I.1Q1122SC2240Q1122SC2240+-IC104BTL084CN+-IC104BTL084CN567R14810KR14810KR1E9330KR1E9330K+C10510uF+C10510uFR1810.22R1810.22Q1032SC2240Q1032SC2240Q131KSA1220AQ131KSA1220AD1151N4148D1151N4148Q135KSC2690AQ135KSC2690AR122100KR122100KQ101KSC2690AQ101KSC2690AR15110KR15110KR1F122KR1F122K+-IC104ATL084CN+-IC104ATL084CN321411C142100nFC142100nFR11715R11715Q1162SA970Q1162SA970R13810KR13810KCWRV102500CWRV102500132Q138KSA1220AQ138KSA1220AR196100KR196100KR18833KR18833K+C10810uF+C10810uFQ149MPSA92Q149MPSA92R1F5270KR1F5270KQ1212SC1815Q1212SC1815R1554.7R1554.7D1051N4148D1051N4148R1A8220R1A8220Q1292SA970Q1292SA970Q147MPSA92Q147MPSA92R18922KR18922KQ1392SA2121Q1392SA2121R124100KR124100KR1F210KR1F210KQ132KSC2690AQ132KSC2690AC11633pFC11633pFR17610KR17610KR1651R1651R16722R16722+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+C15010uFR1614.7R1614.7Q1172SC2240Q1172SC2240R1A410R1A410R1332.7KR1332.7KR1E124.3KR1E124.3K+-IC104CTL084CN+-IC104CTL084CN1098R158910R158910P104A5PIN2.54-CP104A5PIN2.54-C13245C154100nFC154100nFR1H31KR1H31KR1E5100R1E5100+C11510uF+C11510uFR1981KR1981KQ150MPSA92Q150MPSA92R105100R105100C110100nFC110100nFR1301KR1301KQ1302SC2240Q1302SC2240D109BAV21D109BAV21IC101TL431IC101TL431231+C11810uF+C11810uFD121N.I.D121N.I.R1790.22R1790.22R111100R111100Q1152SA970Q1152SA970R16418R16418D1061N4148D1061N4148C139100nFC139100nFR184470R184470Q1202SC2383Q1202SC2383R1E30.05R1E30.05C144100nFC144100nFQ137KSA1220AQ137KSA1220ACB102ST-22 80C L TYPECB102ST-22 80C L TYPE12Q1062SC2878Q1062SC2878+C10910uF+C10910uFC128100nFC128100nFP101B11PIN2.54-CP101B11PIN2.54-C1234567891011R1A27.32KR1A27.32KR1A97.32KR1A97.32KR1G2220KR1G2220K+C11110uF+C11110uFR10924KR10924KR17810KR17810KR1463.9KR1463.9KR113220KR113220KL103100uHL103100uHR17710R17710C113120pFC113120pF+C11410uF+C11410uFR1740.22R1740.22R18547KR18547KIC103TL431IC103TL431231R1433.3R1433.3D1121N4148D1121N4148R1403.9KR1403.9KC126100nFC126100nFR1573.3KR1573.3KR1N2N.I.R1N2N.I.C153N.I.C153N.I.R1N1100R1N1100D1131N5404D1131N5404D1252.4VD1252.4VR12382R12382R1N81KR1N81KD110BAV21D110BAV21Q1142SC2240Q1142SC2240D1206.8VD1206.8VR125200R125200C101100nFC101100nFR1F410KR1F410KR1872.2KR1872.2KR192100R192100Q1452SC5949Q1452SC5949R145330R145330R134N.I.R134N.I.R17018R17018L10210uHL10210uHC148470nFC148470nFR1E8100KR1E8100KR131N.I.R131N.I.R1681R1681Q1462SC5949Q1462SC5949Q1182SA1015Q1182SA1015R1H263.4R1H263.4R11515R11515R14910KR14910KL10110uHL10110uHR1F310KR1F310KR142330R142330R1361KR1361KR1101KR1101KR1F8390KR1F8390KC131100nFC131100nFR1820.22R1820.22C10433pFC10433pFR1800.22R1800.22R1531.8megR1531.8megR1F9110KR1F9110KC132220pFC132220pFR1F7470KR1F7470KQ1512SC1815Q1512SC1815R1750.22R1750.22CWRV104100CWRV104100132+C15847uF+C15847uFR15633R15633Q1432SC5949Q1432SC5949C149470nFC149470nFR1E7560KR1E7560KD119BAV21D119BAV21R17115R17115R1661R1661R1A3100R1A3100Q1132SC2240Q1132SC2240R1041KR1041KQ1402SA2121Q1402SA2121R108100R108100R1473.9KR1473.9KD1041N4148D1041N4148R12610R12610C152100nFC152100nFR19010KR19010KC12122pFC12122pF+C14710uF+C14710uF+C11910uF+C11910uFIC102TL431IC102TL431231Q1082SA970Q1082SA970R118220KR118220KR1H110KR1H110KD118BAV21D118BAV21D123N.I.D123N.I.Q152KSC2690AQ152KSC2690AD1021N4148D1021N4148R12182R12182R16315R16315D1291N4148D1291N4148R1G41megR1G41megR1A5100KR1A5100KR1371.5KR1371.5KR10624KR10624KR101475R101475+C12947uF+C12947uFR1N71KR1N71KR1E69.1KR1E69.1KQ1422SA2121Q1422SA2121R1G1100KR1G1100KQ109KSA1220AQ109KSA1220AD1281N4148D1281N4148D1081N4148D1081N4148+C12010uF+C12010uFD1011N4148D1011N4148R197100KR197100KQ1222SA970Q1222SA970Q1072SC2240Q1072SC2240C136470pFC136470pFD1261N4148D1261N4148C156N.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+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&TH202FOR 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 unless 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 unless noted.+C23610uF+C23610uFR254330KR254330KR218240R218240R2124.7KR2124.7KR2363.3R2363.3+C2122200uF+C2122200uFR22424.9KR22424.9KC25210pFC25210pFR2271KR2271KC220100nFC220100nFC21010nFC21010nFP208A8PIN2.54-A200BP208A8PIN2.54-A200B23415678R230100KR230100KD2141N4148D2141N4148R22256KR22256KR262N.I.R262N.I.C239N.I.C239N.I.R2251KR2251KC226100nFC226100nFR214240R214240R2292.2KR2292.2KR240820R240820IC201NJM317FIC201NJM317FO2I3ADJ1D2151N4148D2151N4148R2152.67KR2152.67KIC204LM337TIC204LM337TO3I2ADJ1C230100nFC230100nFL2011uHL2011uHR2414.7KR2414.7KCWRV201A1KACWRV201A1KA312C20910nFC20910nFRL202AJQX-115F/036/1HS1RL202AJQX-115F/036/1HS134D2021N4148D2021N4148R263220R263220D2091N4148D2091N4148S204BSK-22F03-G7S204BSK-22F03-G7456P206B11PIN2.54-CP206B11PIN2.54-C1234567891011R24810KR24810KD2051N4148D2051N4148PAD6Solder PadPAD6Solder PadL2021uHL2021uHQ2062SA1015Q2062SA1015R20222KR20222K+-IC206ATL082CP+-IC206ATL082CP321PAD2Solder PadPAD2Solder PadR2061KR2061KR251100KR251100KR23422KR23422K+C21810uF+C21810uFR24410KR24410KPAD5Solder PadPAD5Solder PadR253100KR253100KR2081KR2081KHS20270-004003-1HS20270-004003-1C227100nFC227100nFR2661megR2661megRL202BJQX-115F/036/1HS1RL202BJQX-115F/036/1HS112HS20370-004003-1HS20370-004003-1R25510KR25510KR24210KR24210KPAD4Solder PadPAD4Solder PadR2114.7KR2114.7KR220N.I.R220N.I.D2181N4148D2181N4148C259100pFC259100pFR257100KR257100K+-BR201KBU8D+-BR201KBU8D+C20410uF+C20410uFRCA201B2 HOLESRCA201B2 HOLES23R252100KR252100KS202ASK-22F03-G7S202ASK-22F03-G7123P201B5PIN3.96-CP201B5PIN3.96-C12453+C25310uF+C25310uFC206100nFC206100nF+C20310uF+C20310uF+C25010uF+C25010uFPAD3Solder PadPAD3Solder PadR23222KR23222KR26747KR26747KR2051KR2051K+C2132200uF+C2132200uFQ204MPSA42Q204MPSA42D2131N4148D2131N4148TH202BT151-500RTH202BT151-500R312R23810KR23810KR261N.I.R261N.I.RL201BJQX-115F/036/1HS1RL201BJQX-115F/036/1HS112+C23510uF+C23510uFD2201N4148D2201N4148+C21910uF+C21910uF+C25510uF+C25510uFS204ASK-22F03-G7S204ASK-22F03-G7123C205100nFC205100nFC234220nFC234220nF+C244100uF+C244100uFC24310pFC24310pF+C2281000uF+C2281000uFC249100nFC249100nFD20424VD20424V+C21610uF+C21610uFR24910KR24910KC221100nFC221100nFR217240R217240S201SK-22F03-G7S201SK-22F03-G7564123R22324.9KR22324.9KP204A5PIN3.96-AxxBP204A5PIN3.96-AxxB12345R24310KR24310KR2261KR2261KQ2052SA1015Q2052SA1015R260330KR260330KC260100nFC260100nFR2651megR2651meg+C21710uF+C21710uFP202B5PIN3.96-CP202B5PIN3.96-C12453S202BSK-22F03-G7S202BSK-22F03-G7456C20210nFC20210nFD2171N4148D2171N4148C258100pFC258100pFS203SK-22F03-G7S203SK-22F03-G7564123R210220KR210220KC256100nFC256100nFR258100KR258100KR20322KR20322KR2373.3R2373.3C23710nFC23710nFD2111N4148D2111N4148R239180R239180+C22510uF+C22510uFC247100nFC247100nFC214100nFC214100nF+-IC206BTL082CP+-IC206BTL082CP56784P203B12PIN2.54-CP203B12PIN2.54-C123456789101112Q2072SC1815Q2072SC1815D2011N4007D2011N4007R2G10R2G10P205A5PIN3.96-AxxBP205A5PIN3.96-AxxB12345+C24510uF+C24510uFCWRV201B1KACWRV201B1KA645R2314.7KR2314.7KR23333KR23333KR2452.2KR2452.2KR209100R209100RCA201A2 HOLESRCA201A2 HOLES13R264220R26422