Denon-PMA2000AE-int-sm维修电路原理图.pdf
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1、SERVICE MANUALMODELPMA-2000AEINTEGRATED AMPLIFIERFor Europe modelX0240 V.03 DE/CDM 0512注意前、必読。本機、火災、感電、対安全性確保、配慮、法的電気用品安全法、所定許可得製造。従際、安全性維持、記載注意事項必守。 本機仕様性能改良、予告変更。 補修用性能部品保有期間、製造打切後 8年。Some illustrations using in this service manual areslightly different from the actual set.Please use this service
2、manual with referring tothe operating instructions without fail.For purposes of improvement, specifications anddesign are subject to change without notice.修理際必取扱説明書参照上、作業行,。 本文中使用、説明都合上現物多少異場合。Denon Brand Company, D&M Holdings Inc.TOKYO, JAPANVer. 3Ver. 3RadioFans.CN 收音机爱 好者资料库2PMA-2000AEPlease heed
3、 the points listed below during servicing and inspection.Heed the cautions!Spots requiring particular attention when servicing, such asthe cabinet, parts, chassis, etc., have cautions indicated onlabels or seals. Be sure to heed these cautions and the cau-tions indicated in the handling instructions
4、.Caution concerning electric shock!(1) An AC voltage is impressed on this set, so touching inter-nal metal parts when the set is energized could causeelectric shock. Take care to avoid electric shock, by for ex-ample using an isolating transformer and gloves whenservicing while the set is energized,
5、 unplugging the powercord when replacing parts, etc.(2)There are high voltage parts inside. Handle with extra carewhen the set is energized.Caution concerning disassembly and assembly!Though great care is taken when manufacturing parts fromsheet metal, there may in some rare cases be burrs on theedg
6、es of parts which could cause injury if fingers are movedacross them. Use gloves to protect your hands.Only use designated parts!The sets parts have specific safety properties (fire resis-tance, voltage resistance, etc.). For replacement parts, besure to use parts which have the same properties. In
7、particu-lar, for the important safety parts that are marked ! on wiringdiagrams and parts lists, be sure to use the designated parts.Be sure to mount parts and arrange thewires as they were originally!For safety reasons, some parts use tape, tubes or other insu-lating materials, and some parts are m
8、ounted away from thesurface of printed circuit boards. Care is also taken with thepositions of the wires inside and clamps are used to keepwires away from heating and high voltage parts, so be sure toset everything back as it was originally.Inspect for safety after servicing!Check that all screws, p
9、arts and wires removed or discon-nected for servicing have been put back in their original posi-tions, inspect that no parts around the area that has beenserviced have been negatively affected, conduct an insulationcheck on the external metal connectors and between theblades of the power plug, and o
10、therwise check that safety isensured.(Insulation check procedure)Unplug the power cord from the power outlet, disconnect theantenna, plugs, etc., and turn the power switch on. Using a500V insulation resistance tester, check that the insulation re-sistance between the terminals of the power plug and
11、the ex-ternally exposed metal parts (antenna terminal, headphonesterminal, microphone terminal, input terminal, etc.) is 1M orgreater. If it is less, the set must be inspected and repaired.Concerning important safety partsMany of the electric and structural parts used in the set havespecial safety p
12、roperties. In most cases these properties aredifficult to distinguish by sight, and using replacement partswith higher ratings (rated power and withstand voltage) doesnot necessarily guarantee that safety performance will be pre-served. Parts with safety properties are indicated as shownbelow on the
13、 wiring diagrams and parts lists is this servicemanual. Be sure to replace them with parts with the designat-ed part number.(1) Schematic diagrams . Indicated by the ! mark.(2) Parts lists . Indicated by the ! mark.Using parts other than the designated partscould result in electric shock, fires or o
14、therdangerous situations.SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECKBefore returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassisresista
15、nce check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the powercord is less than 460 kohms, the unit is defective.CAUTIONCAUTION、点検時注意願。注意事項守!特注意必要個所、部品、捺印注意事項表示。 注意書取扱説明書注意事項必守。感電注意!(1) 、交流電圧印加通電時内部金属部触感電。従通電時、絶縁使用手袋着用、部品交換、電源抜感電注意。(2) 内部高電圧部分、
16、通電時取扱十分注意。分解、組立作業時注意!板金部品端面、部品製造時充分管理、 板金端面鋭利箇所有、 部品端面触指動怪我場合十分注意作業下。 手保護手袋着用。指定部品使用!部品難燃性耐電圧安全上特性持。従交換部品、使用同特性部品使用。特配線図、部品表 ! 印指定安全上重要部品必指定使用。部品取付配線引、 元!安全上、絶縁材料使用、基板浮取付部品。 内部配線引発熱部品高圧部品接近配慮、 必元。後安全点検!取外、部品、配線元、 個所周辺劣化点検、外部金属端子部、電源刃間絶縁、安全性確保確認。(絶縁方法)電源電源抜、 外、電源入。500V 絶縁抵抗計用、電源端子外部露出金属部端子、端子端子、入力端子間
17、、絶縁抵抗値 M 以上、値以下点検修理必要。安全上重要部品本機使用多電気部品、 機構部品安全上、 特別特性持。 特性場合、外観判別、部品高定格(定格電力、耐圧)持使用安全性維持、限。安全上特性持部品、配線図、 部品表表示必指定部品番号使用願。(1) 配線図 ! 表示。(2) 部品表 ! 表示。指定部品異使用場合、感電、火災危険生恐。注意注意RadioFans.CN 收音机爱 好者资料库3PMA-2000AEIDLING ADJUSTMENTIDLING CURRENTSetup1.Lay the unit at an ordinary position away from a direct c
18、urrent from an air condition or fan. Do the adjustment at atemperature between 15C (59F) and 30C (86F).2.Set control as follows.POWER SWITCHOFF ().VOLUME CONTROLFully counterclockwise in the minimum position ().(Main Volume and Semifixed resistors VR501, VR502)SPEAKER TerminalsOpen: do not connect t
19、he speakers, dummy load etc.Adjustment1.Remove top cover. And then connect DC Voltmeter to test points of 1U-3707-1 (Lch) and 1U-3707-2 (Rch) Power AmpPrinting Wiring Board.2.Connect power cord to AC wall outlet, and turn POWER switch ON (). Within 10 seconds turn VR501 (Lch) andVR502 (Rch) clockwis
20、e so that the DC Voltmeter reads 12 5mV.3.Then after 2 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 125mV.4.And after 10 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 125mV.DC VoltmeterMain Volume1U-3707-2Power Amp P.W.B. (R)VR5021U-3707-1Power Amp P.W.
21、B. (L)VR501PowerTransPowerTrans4PMA-2000AEBLOCK/LEVEL DIAGRAM5PMA-2000AEE2 model SEMICONDUCTORS / 半導体一覧表Only major semiconductors are shown, general semiconductors etc. are omitted to list.主半導体記載。汎用半導体記載省略。ICsTMP87CC46N-4C08 (IC901)2122(VASS)VSSVAREF2023XOUTP60(AIN0)1924XINP61(AIN1)1825RESETP62(AIN2
22、)1726TESTP63(AIN3)1627P00P64(AIN4)1528P01P65(AIN5)1429P02P66(AIN6)1330P03P67(AIN7)1231P04P10(INT0)1132P05P11(INT1)1033P06P12(INT2/TC1)934P07P13(DVO)835(INT3/TC3)P70P14(PPG)736(INT4)P71P15(TC2)637(PDO/PWM)P72P16538(SCK)P73P17439(SI)P74P20(INTS/STOP)340(SO)P75P21(XIN)241(HSCK)P76P22(XOUT)142(HSO)P77VD
23、DPower SupplyTerminalResetI/O TerminalTest TerminalVDDVSSRESETTESTHigh Freq.OscillatorConnectionTerminalXINP22P20I/O PortVAREFALUPSWStack PointerInterrupt Control CircuitProgram CounterProgram Memory(ROM)Data memory(RAM)Unviersal register BlankFlagRBSSystem Control CircuitStandby Control CircuitTimi
24、ng GeneratorTime BaseTimer16 bitTimer/CounterTC1P28 bitA/D ConverterP6P0P1P7TC28 bitTimer/CounterTC3TC48 bit SerialInterfaceCommandregisterCommanddecoderSIOHSOWatch DogTimerClockGeneratorHigh Freq.UseLow Freq.UseAnalogVrefXOUTP67P66(Analog Input)I/O PortP07P00P17P10P77P70P65 (AIN5)P60 (AIN0)6PMA-200
25、0AEE2 model TMP87CC46N-4C08 (IC901) Terminal FunctionFunctionI/OPinNo.Port NameType1P77OCACACPOWER RELARELAYY DRIVE2P76OC3P75(SO)OC4P74(SI)OC5P73(SCK)OC6P72OCMUTE/STMUTE LEDAND-BY LED DRIVE7P71(INT4)OCMOTOR VOLUME UP8P70(INT3)ICREMOTE CONTROL SIGNAL INPUT9P07OCTAPE-2 LEDTAPE-2TAPE-1, ARELAY DRIVE10P
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