Denon-PMA1520AE-int-sm维修电路原理图.pdf

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1、MODELJPE3E2EKEAE1CE1K PMA-1520AEPP INTEGRATED AMPLIFIER Ver. 5 Please use this service manual with referring to the operating instructions without fail. Some illustrations using in this service manual are slightly different from the actual set. For purposes of improvement, specifications and design

2、are subject to change without notice. Please refer to the MODIFICATION NOTICE.e SERVICE MANUAL e RadioFans.CN 收音机爱 好者资料库 ABOUT THIS MANUAL .3 What you can do with this manual .3 Using Adobe Reader (Windows version) .4 SAFETY PRECAUTIONS .6 NOTE FOR SCHEMATIC DIAGRAM .7 NOTE FOR PARTS LIST .7 TECHNIC

3、AL SPECIFICATIONS .9 DIMENSION .9 DISASSEMBLY .10 1. FRONT PANEL ASSY .11 2. POWER AMP PWB .12 3. INPUT PWB .12 4. U-COM PWB .13 5. REC INPUT PWB .13 6. TRANS .13 ADJUSTMENT .14 IDLING CURRENT ALIGNMENT .14 TROUBLE SHOOTING .15 1. The power can not be turned on. (Power indication LED does not light.

4、） .15 2. The power turned on, but a sound does not output normally. (Both channels) .15 LEVEL DIAGRAM .17 POWER DIAGRAM .18 WIRING DIAGRAM .19 PRINTED WIRING BOARDS .20 SCHEMATIC DIAGRAMS (1/3) .24 SCH01_AMP_POWER_FRONT .24 SCH02_INPUT_TONE .25 SCH03_U-COM_FUNCTION .26 EXPLODED VIEW .27 PACKING VIEW

5、 .29 SEMICONDUCTORS .30 1. ICs .30 目次CONTENTS 2 RadioFans.CN 收音机爱 好者资料库 Jump to the target of a schematic diagram connector Click the Ref. No. of the target connector in the red box around a schematic diagram connector. The screen jumps to the target connector. Pagemagnificationstaysthesameasbeforet

6、he jump. ABOUT THIS MANUAL Read the following information before using the service manual. What you can do with this manual Search for a Ref. No. (phrase) (Ctrl+Shift+F) You can use the search function in Acrobat Reader to search for a Ref. No. in schematic diagrams, printed wiring board diagrams, b

7、lock diagrams, and parts lists. 1.Press Ctrl+Shift+Fonthekeyboard. The Search window appears. 2.EntertheRef.No.youwanttosearchforinthe Search window, and then click the Search button. A list of search results appears. 3.Click an item on the list. The screen jumps to the page for that item, and the s

8、earchphraseisdisplayed. Ctrl Shift F 3 Using Adobe Reader (Windows version) Properties Click this button and check that the printer is set to a suitable paper size. Page to print Select the following checkbox. More Options : Current View Page Sizing & Handling Select the following checkbox. Size / S

9、ize Options : Fit Add notes to this data (Sign) TheSignfunctionletsyouaddnotestothedatain this manual. Savethefileonceyouhavefinishedaddingnotes. Example using Adobe Reader X On the View menu, click Sign. The Sign pane appears. Example using Adobe Reader 9 On the Document menu, click Sign. Magnify s

10、chematic / printed wiring board diagrams - 1 (Ctrl+Space, mouse operation) Press Ctrl+Spaceonthekeyboardanddragthe mousetoselecttheareayouwanttoview. Theselectedareaismagnified. Whenyouwanttomovetheareashown,hold down Space and drag the mouse. Whenyouwanttoshowafullpageview,press Ctrl+0onthekeyboard

11、. CtrlSpace 0 Print a magnified part of the manual ThePropertiesdialogboxandfunctionswillvarydependingonyourprinter. 1. Dragthemousetomagnifythepartyouwanttoprint. 2. On the File menu, click Print. 3. ConfigurethefollowingsettingsinthePrintdialogbox. 4. Click the Print button to start printing. 4 Ma

12、gnify schematic / printed wiring board diagrams - 2 (Pan & Zoom function) ThePan&Zoomfunctionletsyouseewhichpartof amagnifieddiagramisbeingshowninaseparate window. Example using Adobe Reader X On the View menu, point to Zoom, and then click Pan & Zoom. The Pan & Zoom window appears on the screen. Ex

13、ample using Adobe Reader 9 On the Tools menu, point to Select & Zoom, and then click Pan & Zoom Window. Magnify schematic / printed wiring board diagrams - 3 (Loupe Tool function) TheLoupeToolfunctionletsyoumagnifyaspecific part of a diagram in a separate window. Example using Adobe Reader X On the

14、View menu, point to Zoom, and then click Loupe Tool. The Loupe Tool window appears on the screen. Example using Adobe Reader 9 On the Tools menu, point to Select & Zoom, and then click Loupe Tool Window. 5 SAFETY PRECAUTIONS The following items should be checked for continued protection of the custo

15、mer and the service technician. leakage current check Beforereturningthesettothecustomer,besuretocarryouteither(1)aleakagecurrentcheckor(2)alinetochassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 46

16、0 kohms, the set is defective. Be sure to test for leakage current with the AC plug in both polarities, in addition, when the sets power is in each state (on,offandstandbymode),ifapplicable. CAUTION Please heed the following cautions and instructions during servicing and inspection. Heed the caution

17、s! Cautions which are delicate in particular for servicing are labeled on the cabinets, the parts and the chassis, etc. Be sure to heed these cautions and the cautions described in the handling instructions. Cautions concerning electric shock! (1) AnACvoltageisimpressedonthisset,soifyou touch intern

18、al metal parts when the set is energized, youmaygetanelectricshock.Avoidgettingan electricshock,byusinganisolatingtransformer and wearing gloves when servicing while the set is energized,orbyunpluggingthepowercordwhen replacing parts, for example. (2) Therearehighvoltagepartsinside.Handlewith extra

19、care when the set is energized. Caution concerning disassembly and assembly! Through great care is taken when parts were manufacturedfromsheetmetal,theremaybeburrson theedgesofparts.Theburrscouldcauseinjuryiffingers are moved across them in some rare cases. Wear gloves toprotectyourhands. Use only d

20、esignated parts! Thesetspartshavespecificsafetyproperties(fire resistance,voltageresistance,etc.).Besuretouseparts which have the same properties for replacement. The burrs have the same properties. In particular, for the importantsafetypartsthatareindicatedbythez mark on schematic diagrams and part

21、s lists, be sure to use the designated parts. Be sure to mount parts and arrange the wires as they were originally placed! Forsafetyseasons,somepartsusetapes,tubesorother insulatingmaterials,andsomepartsaremountedaway from the surface of printed circuit boards. Care is also takenwiththepositionsofth

22、ewiresbyarrangingthem andusingclampstokeepthemawayfromheatingand highvoltageparts,sobesuretoseteverythingbackas itwasoriginallyplaced. Make a safety check after servicing! Check that all screws, parts and wires removed or disconnected when servicing have been put back in their original positions, ch

23、eck that no serviced parts have deteriorate the area around. Then make an insulation check on the external metal connectors and between the blades of the power plug, and otherwise check that safetyisensured. (Insulationcheckprocedure) Unplug the power cord from the power outlet, disconnect the anten

24、na, plugs, etc., and on the power. Using a 500V insulation resistance tester, check that the insulation resistancevaluebetweentheinplugandtheexternally exposedmetalparts(antennaterminal,headphones terminal,inputterminal,etc.)is1Morgreater.Ifitis less, the set must be inspected and repaired. Manyofth

25、eelectricandthestructuralpartsusedinthe sethavespecialsafetyproperties.Inmostcasesthese propertiesaredifficulttodistinguishbysight,andtheuse ofreplacementpartswithhigherratings(ratedpower andwithstandvoltage)doesnotnecessarilyguarantee thatsafetyperformancewillbepreserved.Partswith safetypropertiesa

26、reindicatedasshownbelowonthe wiring diagrams and the parts list in this service manual. Be sure to replace them with the parts which have the designated part number. (1)Schematicdiagrams .Indicatedbythez mark. (2)Partslists .Indicatedbythez mark. The use of parts other than the designated parts coul

27、d cause electric shocks,firesorotherdangerous situations. CAUTION Concerning important safety parts 6 NOTE FOR SCHEMATIC DIAGRAM WARNING: Partsindicatedbythezmarkhavecriticalcharacteristics.UseONLYreplacementpartsrecommendedbythemanufacturer. CAUTION: Beforereturningthesettothecustomer,besuretocarry

28、outeither(1)aleakagecurrentcheckor(2)alinetochassisresistancecheck.If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the set is defective. WARNING: DONOTreturnthesettothecustomerunlesstheproblemisidentifiedandreme

29、died. NOTICE: ALLRESISTANCEVALUESINOHM.k=1,000OHM/M=1,000,000OHM ALLCAPACITANCEVALUESAREEXPRESSEDINMICROFARAD,UNLESSOTHERWISEINDICATED.PINDICATESMICRO-MICRO FARAD.EACHVOLTAGEANDCURRENTAREMEASUREDATNOSIGNALINPUTCONDITION.CIRCUITANDPARTSARESUBJECT TOCHANGEWITHOUTPRIORNOTICE. Parts indicated by nsp on

30、this table cannot be supplied. When ordering a part, make a clear distinction between 1 and I (i) to avoid mis-supplying. A part ordered without specifying its part number can not be supplied. General-purpose Carbon Chip Resistors are not included are not included in the P.W.Board parts list. (Refer

31、 to the Schematic Diagram for those parts.) Parts indicated by the z mark have critical characteristics. Use ONLY replacement parts recommended by the manufacturer. General-purpose Carbon Film Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.) Part indicated by m

32、ark is not illustrated in the exploded view. WARNING: 1. 2. 3. 4. 5. 6. NOTE FOR PARTS LIST INSTRUCTIONS FOR HANDLING SEMI-CONDUCTORS AND OPTICAL UNIT Electrostaticbreakdownofthesemi-conductorsoropticalpickupmayoccurduetoapotentialdifferencecausedby electrostatic charge during unpacking or repair wo

33、rk. 1. GroundforHumanBody Besuretowearagroundingband(1M)thatisproperlygroundedtoremoveanystaticelectricitythatmaybe chargedonthebody. 2. GroundforWorkbench Besuretoplaceaconductivesheetorcopperplatewithpropergrounding(1M)ontheworkbenchorothersurface, wherethesemi-conductorsaretobeplaced.Becausethest

34、aticelectricitychargeonclothingwillnotescapethrough thebodygroundingband,becarefultoavoidcontactingsemi-conductorswithyourclothing CBA Grounding Band Conductive Sheet or Copper Plate 1M 1M CBA 7 Personal notes: 8 nPower amplifier section Rated Output Power: both channels driven (CD IN SPEAKER OUT) 7

35、0 W + 70 W (8 /ohms, 20 Hz 20 kHz, T.H.D. 0.07 %) Dynamic power: 140 W + 140 W (4 /ohms, DIN, 1 kHz, T.H.D. 0.7 %) High frequency distortion: 0.01 % (Rated output: 3 dB), 8 /ohms, 1 kHz Output terminals: Speaker: A or B: 4 16 /ohms A + B: 8 16 /ohms Suited for headphones/stereo headphones Input Sens

36、itivity / Input Impedance: P. DIRECT: 0.84 V / 47 k/kohms Gain: 29 dB nPre amplifier section Equalizer amplifier output: (REC OUT terminals) 150 mV Input Sensitivity/Input Impedance: PHONO (MM):2.5 mV/47 k/kohms PHONO (MC): 200 V/100 /ohms CD, TUNER, AUX, NETWORK, RECORDER: 125 mV/47 k/kohms (SOURCE

37、 DIRECT: Off) 125 mV/23 k/kohms (SOURCE DIRECT: On) RIAA Deviation: PHONO: 20 Hz 20 kHz 0.5 dB Maximum Input: PHONO (MM):130 mV/1 kHz PHONO (MC):10 mV/1 kHz Rated Output: PRE OUT: 0.84 V (Input CD 125 mV) nOverall performance S/N Ratio (A network): PHONO (MM): 89 dB (With input terminals short-circu

38、ited, 5 mV input signal) PHONO (MC): 74 dB (With input terminals short-circuited, 0.5 mV input signal) CD, TUNER, AUX, NETWORK, RECORDER: 108 dB (input terminals short-circuited) Tone control : BASS: 100 Hz 8 dB TREBLE: 10 kHz 8 dB nGeneral Power supply (for E2 model) : AC 230 V, 50/60 Hz Power supp

39、ly (for E1C model) : AC 220 V, 50 Hz Power supply (for JP model) : AC 100 V, 50/60 Hz Power consumption : 295 W Power consumption during standby : 0.2 W Unit : in. (mm) Weight : 16.1 kg 374 414 2515964 18117 135 434 344 60 45 45 2515 TECHNICAL SPECIFICATIONS DIMENSION 9 FRONT PANEL ASSY Refer to DIS

40、ASSEMBLY 1.FRONT PANEL ASSY and EXPLODED VIEW POWER SW.UNIT (Ref. No. of EXPLODED VIEW : 1-3) FRONT SW UNIT (Ref. No. of EXPLODED VIEW : 1-4) VOLUME UNIT (Ref. No. of EXPLODED VIEW : 1-5) POWER LED UNIT (Ref. No. of EXPLODED VIEW : 1-6) VOL SUB UNIT 1 (Ref. No. of EXPLODED VIEW : 1-7) VOL SUB UNIT 2

41、 (Ref. No. of EXPLODED VIEW : 1-8) H/P UNIT (Ref. No. of EXPLODED VIEW : 1-9) FUNCTION SW UNIT (Ref. No. of EXPLODED VIEW : 2-3) REMOTE IN/OUT UNIT (Ref. No. of EXPLODED VIEW : 2-4) TONE UNIT (Ref. No. of EXPLODED VIEW : 2-5) POWER AMP PWB Refer to DISASSEMBLY 2. POWER AMP PWB and EXPLODED VIEW POWE

42、R AMP UNIT (Ref. No. of EXPLODED VIEW : 1-1) POWER TRANS Refer to DISASSEMBLY 6. POWER TRANS and EXPLODED VIEW POWER TRANS (Ref. No. of EXPLODED VIEW : 37) REC INPUT PWB Refer to DISASSEMBLY 5. REC INPUT UNIT and EXPLODED VIEW REC INPUT UNIT (Ref. No. of EXPLODED VIEW : 1-10) AC UNIT Refer to DISASS

43、EMBLY and EXPLODED VIEW AC UNIT (Ref. No. of EXPLODED VIEW : 1-2) INPUT PWB Refer to DISASSEMBLY 3. INPUT PWB and EXPLODED VIEW INPUT UNIT (Ref. No. of EXPLODED VIEW : 2-2) U-COM PWB Refer to DISASSEMBLY 4. U-COM PWB and EXPLODED VIEW U-COM UNIT (Ref. No. of EXPLODED VIEW : 2-1) TOP COVER DISASSEMBLY Disassemble in order of the arrow in the following figure. In the case of the re-assembling, assemble it in order of th