Denon-AVR790-avr-sm维修电路原理图.pdf

RadioFans.CN 收音机爱 好者资料库2AVR-1910/1620/1610/790/590Please heed the points listed below during servicing and inspection.Heed the cautions!Spots requiring particular attention when servicing, suchas the cabinet, parts, chassis, etc., have cautions indicatedon labels or seals. Be sure to heed these cautions and thecautions indicated in the handling instructions.Caution concerning electric shock!(1) An AC voltage is impressed on this set, so touching in-ternal metal parts when the set is energized couldcause electric shock. Take care to avoid electric shock,by for example using an isolating transformer andgloves when servicing while the set is energized, un-plugging the power cord when replacing parts, etc.(2)There are high voltage parts inside. Handle with extracare when the set is energized.Caution concerning disassembly andassembly!Though great care is taken when manufacturing parts fromsheet metal, there may in some rare cases be burrs on theedges of parts which could cause injury if fingers aremoved across 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 par-ticular, for the important safety parts that are marked z onwiring diagrams and parts lists, be sure to use the desig-nated parts.Be sure to mount parts and arrangethe wires as they were originally!For safety reasons, some parts use tape, tubes or other in-sulating materials, and some parts are mounted away fromthe surface of printed circuit boards. Care is also taken withthe positions of the wires inside and clamps are used tokeep wires away from heating and high voltage parts, sobe sure to set everything back as it was originally.Inspect for safety after servicing!Check that all screws, parts and wires removed or discon-nected for servicing have been put back in their original po-sitions, inspect that no parts around the area that has beenserviced have been negatively affected, conduct an insu-lation check on the external metal connectors and betweenthe blades of the power plug, and otherwise check thatsafety is ensured.(Insulation check procedure)Unplug the power cord from the power outlet, disconnectthe antenna, plugs, etc., and turn the power switch on. Us-ing a 500V insulation resistance tester, check that the in-sulation resistance between the terminals of the powerplug and the externally exposed metal parts (antenna ter-minal, headphones terminal, microphone terminal, inputterminal, etc.) is 1M or greater. If it is less, the set mustbe inspected and repaired.Concerning important safetypartsMany of the electric and structural parts used in the sethave special safety properties. In most cases these prop-erties are difficult to distinguish by sight, and using re-placement parts with higher ratings (rated power andwithstand voltage) does not necessarily guarantee thatsafety performance will be preserved. Parts with safetyproperties are indicated as shown below on the wiring dia-grams and parts lists is this service manual. Be sure to re-place them with parts with the designated part number.(1) Schematic diagrams . Indicated by the z mark.(2) Parts lists . Indicated by the z mark.Using parts other than the designatedparts could result in electric shock, fires orother dangerous 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 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.CAUTIONCAUTIONRadioFans.CN 收音机爱 好者资料库3AVR-1910/1620/1610/790/590DIMENSION AVR-1910 model 4AVR-1910/1620/1610/790/590 AVR-1610/1620 model 5AVR-1910/1620/1610/790/590 AVR-790 model 6AVR-1910/1620/1610/790/590 AVR-590 model 7AVR-1910/1620/1610/790/590WIRE ARRANGEMENTIf wire bundles are untied or moved to perform adjustment or parts replacement etc., be sure to rearrange them neatly asthey were originally bundled or placed afterward.Otherwise, incorrect arrangement can be a cause of noisegeneration.Wire arrangement viewed from the topBack Panel sideFront Panel side8AVR-1910/1620/1610/790/590DISASSEMBLY Disassemble in order of the arrow of the figure of following flow. In the case of the re-assembling, assemble it in order of the reverse of the following flow. In the case of the re-assembling, observe attention of assembling it.About the photos used for descriptions in the “DISASSEMBLY” section. The direction from which the photographs used herein were photographed is indicated at Direction of photograph: * at the left of the respective photographs. Refer to the table below for a description of the direction in which the photos were taken. Photographs for which no direction is indicated were taken from above the product. The photograph is AVR-1910.CABINET TOP PANEL FRONT ASSYPCB CNT1PCB SPEAKER ASSYRefer to DISASSEMBLY 1.PANEL FRONT ASSYRefer to DISASSEMBL 2.PCB CNT1Refer to DISASSEMBLY 3.PCB SPEAKER ASSYand EXPLODED VIEWand EXPLODED VIEWand EXPLODED VIEWPCB POWER SW ASSYPCB CNT1 (Ref. No. of EXPLODED VIEW : 71)PCB SPEAKER ASSY (Ref. No. of EXPLODED VIEW : 9) (Ref. No. of EXPLODED VIEW : 63)PCB FUNC ASSY (Ref. No. of EXPLODED VIEW : 10)PCB FRONT ASSY (Ref. No. of EXPLODED VIEW : 11)CHASSIS BACKPCB POWER/POWER SUPPLY ASSYPCB ENCORDER Refer to DISASSEMBLY 4.CHASSIS BACKRefer to DISASSEMBLY (Ref. No. of EXPLODED VIEW : 13)and EXPLODED VIEW6.PCB POWER/POWER SUPPLY ASSYPCB HEAD PHONE ASSYand EXPLODED VIEW (Ref. No. of EXPLODED VIEW : 14)PCB POWER SUPPLY ASSYPCB V-AUX ASSY (Ref. No. of EXPLODED VIEW : 56) (Ref. No. of EXPLODED VIEW : 21)PCB POWER ASSYPCB MIC ASSYPCB MAIN ASSY (Ref. No. of EXPLODED VIEW : 57) (Ref. No. of EXPLODED VIEW : 22)Refer to DISASSEMBLY 5.PCB MAIN ASSYPCB CNT ENCORDERand EXPLODED VIEW (Ref. No. of EXPLODED VIEW : 61)PCB MAIN ASSYTRANS MAINPCB SW (Ref. No. of EXPLODED VIEW : 50)Refer to DISASSEMBLY 8.TRANS MAINRefer to DISASSEMBLY 8.TRANS MAIN (Ref. No. of EXPLODED VIEW : 78)PCB INPUT ASSYand EXPLODED VIEW (Ref. No. of EXPLODED VIEW : 51)TRANS MAINPCB VIDEO ASSY (Ref. No. of EXPLODED VIEW : 46)PCB AMP ASSY (Ref. No. of EXPLODED VIEW : 53)Refer to DISASSEMBLY 7.PCB AMP ASSYPCB DIGITAL ASSYand EXPLODED VIEW (Ref. No. of EXPLODED VIEW : 54)PCB AMP ASSYPCB HDMI ASSY (Ref. No. of EXPLODED VIEW : 33) (Ref. No. of EXPLODED VIEW : 55)The viewpoint of each photograph(Photografy direction)View from aboveFront sideDirection of photograph: BDirection of photograph: DDirection of photograph: CDirection of photograph: A9AVR-1910/1620/1610/790/5901. PANEL FRONT ASSY(1) Remove the screws.(2) Cut the wire clamp band, and loose the style pin.(3) Cut the wire clamp band, then loose the style pin and Cord holder. Disconnect the connector wire and FFC Cable.Proceeding :CABINET TOPPANEL FRONT ASSY View from bottomDirection of photograph: DStyle pin : LoosecutCord holder : LooseCord holder : LooseStyle pin : LooseCP1501CP1300Style pin : LooseCP1001CP1705FFC CableCP1307cutPlease refer to EXPLODED VIEW for the disassembly method of each P.W.B included in PANEL FRONT ASSY.10AVR-1910/1620/1610/790/5902. PCB CNT1 (1) Disconnect the connector board.3. PCB SPEAKER ASSY(1) Disconnect the connector wires.(2) Remove the screws.Proceeding :CABINET TOPPCB CNT1PCB CNT1PCB CNT (1910/790 model)Board to boardBoard to boardBoard to boardProceeding :CABINET TOPPCB SPEAKER ASSYCP1001 (1910/790 model)CN1309 (1910/790 model)CP1002 (1910/790 model) CP1003 (1610/1620/590/ model), CP1004 (1610/1620/590/ model)PCB SPEAKER ASSYDirection of photograph: A11AVR-1910/1620/1610/790/5904. CHASSIS BACK(1) Remove the screws.5. PCB MAIN ASSY(1) Cut the wire clamp band, then loose the style pin and Cord holder. Disconnect the connector wire and FFC Cable.Proceeding :CABINET TOPPCB SPEAKER ASSYCHASSIS BACKDirection of photograph: AProceeding :CABINET TOPPCB SPEAKER ASSYCHASSIS BACK PCB MAIN ASSY CP1700CP1002CP1004CP1001CP1003Style pin : LooseCP1001CP1005CP1501CP1200CP1000CP1003FFC CableStyle pin : Loosecutcut12AVR-1910/1620/1610/790/590(1) Disconnect the connector board.(2) Remove the screws.Board to boardBoard to boardBoard to boardPCB DIGITAL ASSYPCB MAIN ASSYPCB VIDEO ASSYPCB EXT. ASSY (1910/790 model)PCB INPUT ASSYPCB HDMI ASSY13AVR-1910/1620/1610/790/5906. PCB POWER/POWER SUPPLY ASSY(1) Cut the wire clamp band, then loose the style pin and Cord holder. Disconnect the connector wire.(2) Remove the screws.Proceeding :CABINET TOPPCB POWER/POWER SUPPLY ASSYcutcutCP1705CP1706CP1704CP1700Style pin : LoosePCB POWER ASSYPCB POWER SUPPLY ASSY?14AVR-1910/1620/1610/790/5907. PCB AMP ASSY(1) Remove the screws.(2) Cut the wire clamp band, then loose the style pin and Cord holder. Disconnect the connector wire.(3) Loose the style pin, then remove the screws.Proceeding :CABINET TOPPCB AMP ASSYView from bottomFFC CableCP1200CP1003Style pin : LooseStyle pin : LooseCP1005CP1001CP1001CP1000CP1309CP1501cutPCB AMP ASSYDirection of photograph: DStyle pin : LooseDirection of photograph: C15AVR-1910/1620/1610/790/5908. TRANS MAIN(1) Loose the style pin.(2) Loose the Cord holder, then disconnect the connector wire.(3) Remove the screws.Proceeding :CABINET TOP TRANS MAINDirection of photograph: DStyle pin : LooseCP1002CP1004CP1307CP1300Cord holder : Loose16AVR-1910/1620/1610/790/590CAUTION IN SERVICINGInitializing AV SURROUND RECEIVERAV SURROUND RECEIVER initialization should be performed when the com, peripheral parts of com, and Digital P.W.B. are replaced.1. Switch off the unit.2. With the SURROUND MODE 0 and SURROUND MODE 1 buttons pressed, press the ON/OFF button to turn the power on.3. Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.JIG to use for servicingWhen you repair the printing board, you can use the following JIG (Extension cable kit). Please order to Denon Official Service Distributor in your region if necessary.00D SPK- 561 EXTENSION UNIT KIT: 1 Set00D SPK- 562 9120 CONN. JOINT KIT : 1 SetWhen you update the firmware, you can use the following JIG (RS232C to internal connector conversion adapter with 8P cable kit ). Please order to Denon Official Service Distributor in your region if necessary.00DSPK-581 WRITING UNIT: 1 SetNote:If step 3 does not work, start over from step 1. All user settings will be lost and this factory setting will be recovered when this initialization mode.So make sure to m+emorize your setting for restoring after the initialization.SURROUNDMODE 0SURROUNDMODE 1ON/OFF17AVR-1910/1620/1610/790/590SPECIAL MODE gSpecial mode setting button Press the ON/OFF button to turn on while pressing both buttons A and B at the same time.ModeButton AButton BContentscom/DSP Version display modeSTATUSDIMMERSerial No. and firmware versions such as Main, Sub, DSP are displayed in the FL manager. Errors are displayed when they occur. (Refer to 18 page.)Errors checking mode (Displaying the protection history)STATUSMULT EQDisplaying the protection history(Refer to 19 page.)Initialization modeSURROUNDMODE0SURROUNDMODE1Backup data initialization is carried out.(Refer to 16 page.)Mode for switching tuner frequency stepSOURCE-(non)-E2 model only-Select with the SOURCE 01 button.Change tuner frequency step to AM9k/FM50kHz STEP or AM:10k/FM:200kHz.Mode for preventing remote control acceptanceCURSOR 0RESTOREROperations using remote control are rejected.(Mode cancellation: Turn off power and execute the same button operations as when performing setup.)Panel lock modeSURROUNDMODE0RESTOREROperations using main unit panel buttons or master volume are rejected.Panel lock mode(Remove Master volume)SURROUNDMODE1RESTOREROperations using main unit panel buttons are rejected.Cancellation of panel lock modeMENURESTORERPanel lock mode is cancelled.00DIMMERSTATUSMULTEQENTERMENUSURROUND0 MODE 1ON/OFFCURSORSOURCERESTORER18AVR-1910/1620/1610/790/5901. com/DSP Version display mode1.1. Operation specificationscom/DSP version display mode:When started up, the version information is displayed.Starting up:With the DIMMER and STATUS buttons pressed, press the ON/OFF button to turn the power on.Now, press the STATUS button to the display the 2nd item information on the FL Display.1.2. Display OrderDestination information Main-com version information Sub-com version information DSP version information APLD version information1.3. Error display gSee the following table for each Error information display and its contents (status). Display order is .Condition State DisplaySub-com NGNo response from Sub-com DIR NGNo response from DIR DSP NGWhen DSP boot, executing DSP reset makes no change to DSP FLAG0 port H. No change to DSP FLAG0 port H before issuing DSP command. When DSP data read, executing WRITE=L makes no change to ACK=H. When DSP data read, executing REQ=L makes no change to ACK=L. When DSP data write, executing WRITE=H makes no change to ACK=H. When DSP data write, executing REQ=L makes no change to ACK=L. When DSP special code boot, executing DSP reset makes no change to DSP FLAG0 port H. No change to DSP FLAG0 port H before issuing DSP special read com-mand. No change to DSP FLAG0 port H before DSP version read. Both SUB/DSP OK(No error display, version display only)19AVR-1910/1620/1610/790/5902. Errors checking mode (Displaying the protection history)2.1. Operation specificationsError mode (Displaying the protection history):When started up, the error information is displayed.Starting up: All model commonnessWith the STATUS and MULTEQ buttons pressed, press the ON/OFF button to turn the power on. The error (protection history display) mode is set.Now, press the STATUS button to turn on the FL display.2.2. About the display on the FL displayWhen the STATUS button is pressed after setting the error (protection history display) mode, a history like the one shown below is displayed, depending on the conditions.(1) Normally (when there has been no protection incident)(2) For ASO/DC (when the last protection incident was ASO or DC protection)(3) For THERMAL (when the last protection incident was THERMALprotection)When the STATUS button is pressed again after the above protection history is displayed, the normal display reappears.2.3. Clearing the protection historyThere are two ways to clear the protection history, as described below.(1) Start up the error (protection display) mode, display the error, then press and hold in the ENTER button for 3 seconds.Press and hold in the ENTER button for 3 secondsThe above is displayed and the protection history is cleared.(2) Initialize. If you want to save a backup, use the method in 3.(1) above.Warning indication by the POWER LEDIf the power is turned off when a protection inci