Denon-AVR3801-avr-sm维修电路原理图.pdf

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1、Hi-Fi ComponentSERVICE MANUALMODEL AVR-3801AV SURROUND RECEIVER? Some illustrations using in this service manual are slightly different from the actual set.RadioFans.CN 收音机爱 好者资料库2AVR-3801SPECIFICATIONS! ! ! ! ! AUDIO SECTION Power AmplifierRated output:Front:105W + 105W (8/ohms, 20Hz 20kHz with 0.0

2、5% T.H.D.)150W + 150W (6/ohms, 1kHz with 0.7% T.H.D.)180W + 180W (6/ohms, EIAJ)Center:105W (8/ohms, 20Hz 20kHz with 0.05% T.H.D.)150W (6/ohms, 1kHz with 0.7% T.H.D.)180W + 180W (6/ohms, EIAJ)Surround:105W + 105W (8/ohms, 20Hz 20kHz with 0.05% T.H.D.)150W + 150W (6/ohms, 1kHz with 0.7% T.H.D.)180W +

3、180W (6/ohms, EIAJ)Surround Back: 105W + 105W (8/ohms, 20 Hz 20kHz with 0.05% T.H.D.)150W + 150W (6/ohms, 1kHz with 0.7% T.H.D.)180W + 180W (6/ohms, EIAJ)Dynamic power:140W 2ch (8/ohms)210W 2ch (4/ohms)240W 2ch (2/ohms)Output terminals:Front, Center, Surr. Back/Multi Zone: 6 16/ohmsSurround:A or B 6

4、 16/ohmsA + B 8 16/ohms AnalogInput sensitivity/input impedance:200mV/47k/kohmsFrequency response:10Hz 100kHz: +0, 3dB (DIRECT model)S/N:102dB (DIRECT mode)Distortion:0.005% (20Hz 20kHz) (DIRECT mode)Rated output:1.2V DigitalD/A output:Rated output 2V (at 0dB playback)Total harmonic distortion 0.008

5、% (1 kHz, at 0 dB)S/N ratio 102dBDynamic range 96dBDigital input:Format Digital audio interface Phono equalizer (PHONO input REC OUT)Input sensitivity:2.5mVRIAA deviation:1dB (20Hz to 20kHz)Signal-to-noise ratio:74dB (A weighting, with 5mV input)Rated output/Maximum output:150mV/8VDistortion factor:

6、0.03% (1kHz, 3V)! ! ! ! ! VIDEO SECTION Standard video jacksInput/output level and impedance:1Vp-p, 75/ohmsFrequency response:5Hz 10MHz +0, 3dB S-video jacksInput/output level and impedance:Y (brightness) signal 1Vp-p, 75/ohmsC (color) signal 0.286Vp-p, 75/ohmsFrequency response:5Hz 10MHz +0, 3dB Co

7、lor component video jacksInput/output level and impedance:Y (brightness) signal 1Vp-p, 75/ohmsCB (blue) signal 0.7Vp-p, 75/ohmsCR (red) signal 0.7Vp-p, 75/ohmsFrequency response:5Hz 27MHz +0, 3dB! ! ! ! ! TUNER SECTIONFM (note: V at 75/ohms, 0dBf=1 10-15 W)AMReceiving Range:87.50MHz 107.90MHz520kHz

8、1710kHz(for North America and multiple voltage models)(for North America and Multiple voltage models)87.50MHz 108.00MHz522kHz 1611kHz(for Europe, China, Hong Kong, Taiwan R.O.C. and Multiple voltage models)(for Europe, China, Hong Kong, Taiwan R.O.C. and multiple voltage models)Usable Sensitivity:1.

9、0V (11.2dBf)18V50dB Quieting Sensitivity:MONO: 1.6V (15.3dBf)STEREO: 23V (38.5dBf)S/N (IHF-A):MONO: 80dBSTEREO: 75dBTotal Harmonic Distortion (at 1kHz):MONO: 0.15%STEREO: 0.3%! ! ! ! ! GENERALPower supply:AC120V, 60Hz (for North America and Taiwan R.O.C. models)AC230V, 50Hz (for Europe model)AC220V,

10、 50Hz (for China model)AC115V/230V, 50/60Hz (for Hong Kong and Multiple voltage models)Power consumption:7.0A (for North America model)400W (for Europe, China, Hong Kong and Multiple voltage models)360W (for Taiwan R.O.C. model)2.0W Max (Standby)Maximum external dimensions:434 (W) 171 (H) 416 (D)mm

11、(17-3/32 6-11/32 16-3/8)Weight:17.0kg (37 lbs 8 oz)! ! ! ! ! REMOTE CONTROL UNIT(RC-883: for North America, China, Hong Kong, Taiwan R.O.C. and Multiple voltage models)(RC-884: for Europe model)Batteries:R6P/AA Type (three batteries)External dimensions:61 (W) 230 (H) 34 (D)mm (2-13/32 9-1/16 1-11/32

12、)Weight:200g (Approx. 7 oz) (including batteries)* For purposes of improvement, specifications and design are subject to change without notice.SAFETY PRECAUTIONSThe following check should be performed for the continued protection of the customer and service technician.LEAKAGE CURRENT CHECKBefore ret

13、urning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassisresistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of thepower cord is less than 460 kohms, the unit is defective.Spec.p6500/09

14、/12, 14:36Page 2Adobe PageMaker 6.5J/WinRadioFans.CN 收音机爱 好者资料库3AVR-3801WIRE ARRANGEMENTIf wire bundles are untied or moved to perform adjustment or parts replacement etc.,be sure to rearrange them neatly as theywere originally bundled or placed afterward.Otherwise, incorrect arrangement can be a ca

15、use of noise generation.Wire arrangement viewed from the top4AVR-3801DISASSEMBLY(Follow the procedure below in reverse order when reassembling)1. Top CoverRemove 3 screws 1 on the rear and 6 screws 2 on bothsides to detach the Top Cover as shown in the arrowdirection.2. Front Panel(1) Remove 7 screw

16、s 3 from the top and bottom edges ofthe Front Panel.(2) Release 4 top and bottom hooks, then detach the FrontPanel as shown in the arrow direction.Top Cover3. Inner PanelPull out the Inner Panel in the arrow direction after removing3 screws 4.Inner PanelHook221333HookHookHookFront Panel44Disassembly

17、.p6500/09/12, 14:31Page 4Adobe PageMaker 6.5J/Win5AVR-38014. Inner Panel Assy(1) Remove 3 round and 1 square knobs, and unscrew 4nuts.(2)Remove 15 screws 5 fixing each P.W.B.Round Knob555NutSquare KnobRound KnobNut5. Power Transformer(1) Remove 4 screws fixing the Power Transformer and 4connectors.(

18、2) Be careful when removing the Power Transformer as itis heavy.Before proceeding to the next stop, take off the PowerTransformer.Disassembly.p6500/09/12, 14:31Page 5Adobe PageMaker 6.5J/Win6AVR-38017. Regulator UnitTake off the Regulator Unit ? ? as shown in the arrowdirection after removing 8 scre

19、ws ? ?.? ? ?6. Component Video Unit / PRE-OUT Unit /AMP Connect Unit(1) Remove 9 screws 6 to detach Component Video Unit7 and Pre-out Unit 8.(2) Take off the Amp Connect Unit 9 as shown in thearrow direction after removing 1 screw ? ?.8679? ?Disassembly.p6500/09/12, 14:32Page 6Adobe PageMaker 6.5J/W

20、in7AVR-38018. S-Video / C-video / Audio-in & DSP /Ext-in & VR / Digital-in / Tuner Unit(1) Remove 37 screws ? ? to detach the Rear Panel.(2) Take off the objective P.W.B. upward.9. How to Check Power Amp / -com Unitwith Power-on(1) Remove 12 screws ? ?, 1 screw ? ?, and 4 screws? ? fixing to the Cha

21、ssis.(2) Pull up the Unit to separate from the Chassis.Rear Panel? ? ? ? ? ? ? ? ? ? ? ? ?Disassembly.p6500/09/12, 14:32Page 7Adobe PageMaker 6.5J/Win12345678ABCDE8LEVEL DIAGRAMSAVR-380187654321ABCDEAVR-38019CLOCK FLOW & WAVE FORM IN DIGITAL BLOCKWave FormCH1: D-DATA(IC510 (5) )1 CH1: DATACH2: fsCH3

22、: 64fsCH4: 256fs3CH1: DATACH2: fsCH3: 64fs210AVR-3801FM/MPX ALIGNMENTInputOutputAdjustStepAlignmentItemTuningFrequencySettingTypeFrequencyInput LevelModulationCouplingTypeConnect toPointsAdjust toRemarks1Tuning Center98.1 MHzFM SSG98.1 MHz60 dBNoneAntennaTerminalDigitalVoltmeterTP102(JV36- JV67)T502

23、 50mVFunction : FMMode : Auto2Separation98.1 MHzFM SSG98.1 MHz60 dBStereo (L)1KHz 100%AntennaTerminalACVoltmeterAUDIOOUTTerminal (R)VR502MaximumSeparation?3Signal Level98.1 MHzFM SSG98.1 MHz20 dBOffAntennaTerminal?VR501Light“TUNED”FLDCharacter?AM ALIGNMENTOutputAdjustmentStepAlignmentItemFrequencyIn

24、putTypeConnect toPointsAdjust toRemarks1IF?IF SWEEP(Input level is not over to work A.G.C.)OscilloscopeIC502 12PinT503Maximum height and bestsymmetry curveADJUSTMENTADJUSTMENTTuner SectionTuner SectionCONNECTION DIAGRAM OF MEASURING INSTRUMENTSCONNECTION DIAGRAM OF MEASURING INSTRUMENTS? FM FM? AM A

25、MSTEREOMODULATORFMSSGDIGITALVOLTMETERTP102T502VR501VR502I C50 27511U-3318-5 TUNER UNITT503IC502112PinGNDAMAM IFOUTOSCILLOSCOPE1U-3318-5 TUNER UNIT1111AVR-3801AVR-38011212AVR-3801AVR-3801Audio SectionAudio SectionIdling Current (1U-3315-1)Idling Current (1U-3315-1)Required measurement equipment : DC

26、VoltmeterRequired measurement equipment : DC VoltmeterPreparationPreparation(1)(1)Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room tempereture 15 C 30 CAvoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room tem

27、pereture 15 C 30 C(59 F 86 F).(59 F 86 F).(2)(2)PresettingPresetting? ? POWER (Power sourse switch)POWER (Power sourse switch)?OFFOFF? ? SPEAKER (Speaker terminal)SPEAKER (Speaker terminal)?No load (Do not connect speaker, dummy resistor, etc.)No load (Do not connect speaker, dummy resistor, etc.)Ad

28、justmentAdjustment(1)(1) Remove top cover and set VR101, VR102, VR201, VR202, VR301, VR302, VR401, on 1U- 3315- 1 (Power Unit) at Remove top cover and set VR101, VR102, VR201, VR202, VR301, VR302, VR401, on 1U- 3315- 1 (Power Unit) at fullyfullycounterclockwise ( counterclockwise ( ) ). .(2)(2)Conne

29、ct DC Voltmeter to test points (FRONT- Lch: TP101, FRONT- Rch: TP102, CENTER ch: TP401, SURROUND- Lch:Connect DC Voltmeter to test points (FRONT- Lch: TP101, FRONT- Rch: TP102, CENTER ch: TP401, SURROUND- Lch:TP201, SURROUND- Rch: TP202, SURROUND BACK- Lch: TP301, SURROUND BACK- Rch: TP302).TP201, S

30、URROUND- Rch: TP202, SURROUND BACK- Lch: TP301, SURROUND BACK- Rch: TP302).(3)(3)Connect power cord to AC Line, and turn power switch ON.Connect power cord to AC Line, and turn power switch ON.(4)(4)Presetting.Presetting.MASTER VOLUMEMASTER VOLUME : : - - - counterclockwise ( - - - counterclockwise

31、( min.) min.)MODEMODE: : 7CH STEREO7CH STEREOFUNCTIONFUNCTION: : CDCD(5)(5)Allow 2 minutes, and turn VR101 clockwise ( Allow 2 minutes, and turn VR101 clockwise ( ) to adjust the TEST POINT voltage to 6.5 mV ) to adjust the TEST POINT voltage to 6.5 mV 0.5 mV DC.0.5 mV DC.(6)(6)After 10 minutes from

32、 preset, turn VR101 to set the voltage to 8 mV After 10 minutes from preset, turn VR101 to set the voltage to 8 mV 0.5 mV DC.0.5 mV DC.(7)(7)Adjust the Variable Resistors of other channels in the same way.Adjust the Variable Resistors of other channels in the same way.(8)(8)After 5 minutes from (6),

33、 turn VR101 to set the voltage to 8 mV After 5 minutes from (6), turn VR101 to set the voltage to 8 mV 0.5 mV DC.0.5 mV DC.(9)(9)Adjust the Variable Resistors of other channels in the same way.Adjust the Variable Resistors of other channels in the same way.VR302DC VoltmeterTP302VR401TP401VR102TP102V

34、R101TP101VR202TP202VR201TP201TP301VR301SBR chC chFR chFL chSR chSL chSBL chNameFunctionTMP88CU74F Terminal FunctionPinNo.1P02/S01RDS RESETOCZLRDS reset output (LC7074)2P03OSD RSTOCZHOSD control output (M35015)3P04ST/MONOOCZLSTEREO/MONO control signal, L: STEREO4P05PLFL DATAOCZLPLL, FL control termin

35、al (LC72131 & LC75721NE)5P06PLL STBOCZLPLL control terminal (LC72131)6P07PLFL CLKOCZLPLL, FL control terminal (LC72131 & LC75721NE)7VssVssIGNDLGND8XoutXoutOXTAL9XinXinIXTAL10RESET_RESET_IEuLvLReset input11P22/XTOUT TUNED_IEuLvZTuning detect, L: Tuned12P21/XTINSTEREO_IEuLvZL: At stereo receive13TESTT

36、ESTIGNDSConnect to GND14P20/INT5_B.DOWN_IEuLvZPower down detect, L: Power down15P10/INT0_PROTECT_IEdE&LZPROTECTION detect input, H: Detect16P11/INT1RDS STARTIZLRDS data input (LC7074)17P12OSD CLKOCZHOSD control output (M35015)18P13OSD CSOCZHOSD control output (M35015)19P14OSD DATAOCZLOSD control out

37、put (M35015)20P15/INT3REMOCONIEdE&LZRemote control signal input21P16/INT2ACKOCZLMAIN-SUB CPU comm. control terminal22P17/INT4REQIEuZLMAIN-SUB CPU comm. control terminal23P30/SCLSIIMAIN-SUB CPU comm. control terminal24P31/SDASOOCMAIN-SUB CPU comm. control terminal25P32/SCK0_ CLKOCMAIN-SUB CPU comm. c

38、ontrol terminal26P40/AIN0MODEIEuLvZDestination switching input27P41/AIN1KEY1IEuLvZButton input 128P42/AIN2KEY2IEuLvZButton input 229P43/AIN3KEY3IEuLvZButton input 330P44/AIN4FUNC STB1OCZLFunction control output, REC OUT (TC9274-011), EXT/SOURCE (TC9274-012)31P45/AIN5FUNC/T. CON CLKOCZLFunction contr

39、ol output (TC9274N, TC9273), TONE control output (TC9184P)32P46/AIN6FUNC/T. CON DATAOCZLFunction control output (TC9274N, TC9273), TONE control output (TC9184P)33P47/AIN7E.VOL STB2OCZLMulti Elect. volume control output (TC9459)34P50/AIN8E.VOL STB1OCLLElect. volume control output (TC9459)35P51/AIN9TO

40、NE STBOCLLTONE control output (TC9184P)36P52/AIN10E.VOL DATAOCLHElect. volume control output (TC9459)37P53/AIN11E.VOL CLKOCLHElect. volume control output (TC9459)SymbolI/OTypeOpDetResInitSEMICONDUCTORS! ! ! ! ! ICsNote: Abbreviation ahead of IC No. indicates the name of P.W.B.PO: Power P.W.B.RE: Reg

41、ulator P.W.B.EX: Exit in P.W.B.AU: Audio/DSP P.W.B.CO: Control P.W.B.AC: Amp Connect P.W.BTMP88CU74F(CO: IC303)Function38VASSVASSIRef. volt (GND)39VAREFVAREFIRef. volt (VDD)40VDDVDDIPower supply41P60FL CEOPEdSLHFL display control output (LC75721NE)42P61FL RESOPEdSLHFL display control output (LC75721

42、NE)43P62FUNC STB2OPEdZLFunction control output (TC9273), INPUT (TC9273)44P63SA-RELAYOPIdLLSurround SP relay A control terminal, L: Mute45P64SB-RELAYOPIdLLSurround SP relay B control terminal, L: Mute46P65C-RELAYOPIdLLCenter SP relay control terminal, L: Mute47P66F-RELAYOPIdLHFront SP relay control t

43、erminal, L: Mute48P67PRE F MUTEOPEdLHFront PRE OUT mute control terminal, L: Mute49P70PRE C MUTEOPEdLLCenter PRE OUT mute control terminal, L: Mute50P71PRE S MUTEOPEdLLSurround PRE OUT mute control terminal, L: Mute51P72SUB WOOFER MUTEOPEdLHSub-woofer PRE OUT mute control terminal, L: Mute52P73H/P R

44、ELAYOPIdLHH/P OUT relay control terminal, L: Mute53P74EXP OEOPEdLHPort expander control terminal (BU4094)54P75EXP CLKOPEdLLPort expander control terminal (BU4094)55P76EXP DATAOPEdLLPort expander control terminal (BU4094)56P77EXP STBOPEdLLPort expander control terminal (BU4094)57P80POWEROPIdLHPower r

45、elay control output, H: ON58P81RESET2OPIdLLReset signal output to sub-CPU, H: Reset59P82PRE S.BACK MUTEOPIdLLSurround Back PRE PUT mute control terminal, L: Mute60P83S.BACK VOL MUTEOPIdLLSurround Back volume mute, L: Mute61P84STANDBYOPIdLHStandby LED drive output H: Light62P85S.BACK RELAYOPIdLLSurro

46、und Back SP relay control terminal, L: Mute63P86LED CKOPIdLLLED control terminal (BU2090F)64P87LED DATAOPIdLLLED control terminal (BU2090F)65P90TUNER MUTEOPEdLHTUNER mute control terminal, H: Mute66P91MULTI MUTEOPIdLHMULTI PREOUT mute control terminal, H: Mute67P92S MONI DETIEuLvZS monitor connectio

47、n detect input, L: Connected68P93S SIG DETIEuLvZS signal detect input, H: Detected69P94SYNC DET.IEuLvZSync detect input, H: Ext. sync70P95SEL A (M)IEuLvZMaster volume rotation detect input (rotary encoder)71P96SEL B (M)IEuLvZMaster volume rotation detect input (rotary encoder)72P97CINEMA EQOPEuLvZLC

48、INEMA EQ control output, H: ON73PD0VOL MUTEOPEdLLMaster volume minimum control, L: Min.74PD1SEL C (S)IEuLvZSurround mode rotation detect input (rotary encoder)75PD2SEL D (S)IEuLvZSurround mode rotation detect input (rotary encoder)76PD3SEL E (F)IEuLvZInput selector switch rotation detect input (rota

49、ry encoder)77PD4SEL F (F)IEuLvZInput selector switch rotation detect input (rotary encoder)78VkkVkkGND fixed79P00/SCK1_ RDS CLKISZRDS clock input (LC7074)80P01/SI1RDS DATAISZRDS data input (LC7074)I/OTypeOpDetResInitNamePinNo.SymbolNOTE:Pin No.: Terminal number of microcomputer.Port Name: The name e

50、ntered in the data sheet of microcomputer.Symbol: Symbolized interface function.I/O: Input or out of part.“I”= Input port“O”= Output portType: Composition of port in case of output port.“C”= CMOS output“N”= NMOS open drain output“P”= PMOS open drain outputOp: Pull up/Pull down selection information.