Denon-AVR790-avr-sm维修电路图 手册.pdf

《Denon-AVR790-avr-sm维修电路图 手册.pdf》由会员分享，可在线阅读，更多相关《Denon-AVR790-avr-sm维修电路图 手册.pdf（154页珍藏版）》请在收音机爱好者资料库上搜索。

1、RadioFans.CN 2 AVR-1910/1620/1610/790/590 Please heed the points listed below during servicing and inspection. Heed the cautions! Spots requiring particular attention when servicing, such as the cabinet, parts, chassis, etc., have cautions indicated on labels or seals. Be sure to heed these cautions

2、 and the cautions 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 could cause electric shock. Take care to avoid electric shock, by for example using an isolating trans

3、former and gloves 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 extra care when the set is energized. Caution concerning disassembly and assembly! Though great care is taken when manufacturing par

4、ts from sheet metal, there may in some rare cases be burrs on the edges of parts which could cause injury if fingers are moved 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 r

5、eplacement parts, be sure to use parts which have the same properties. In par- ticular, for the important safety parts that are marked z on wiring diagrams and parts lists, be sure to use the desig- nated parts. Be sure to mount parts and arrange the wires as they were originally! For safety reasons

6、, some parts use tape, tubes or other in- sulating materials, and some parts are mounted away from the surface of printed circuit boards. Care is also taken with the positions of the wires inside and clamps are used to keep wires away from heating and high voltage parts, so be sure to set everything

7、 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 been serviced have been negatively affected, conduct an insu

8、- lation check on the external metal connectors and between the blades of the power plug, and otherwise check that safety is ensured. (Insulation check procedure) Unplug the power cord from the power outlet, disconnect the antenna, plugs, etc., and turn the power switch on. Us- ing a 500V insulation

9、 resistance tester, check that the in- sulation resistance between the terminals of the power plug and the externally exposed metal parts (antenna ter- minal, headphones terminal, microphone terminal, input terminal, etc.) is 1M or greater. If it is less, the set must be inspected and repaired. Conc

10、erning important safety parts Many of the electric and structural parts used in the set have 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 and withstand voltage) does not necessarily g

11、uarantee that safety performance will be preserved. Parts with safety properties 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) P

12、arts lists . Indicated by the z mark. Using parts other than the designated parts could result in electric shock, fires or other dangerous situations. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK

13、 Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis 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 460 kohms, the unit is defective.

14、 CAUTION CAUTION RadioFans.CN 3 AVR-1910/1620/1610/790/590 DIMENSION AVR-1910 model RadioFans.CN 4 AVR-1910/1620/1610/790/590 AVR-1610/1620 model RadioFans.CN 5 AVR-1910/1620/1610/790/590 AVR-790 model RadioFans.CN 6 AVR-1910/1620/1610/790/590 AVR-590 model RadioFans.CN 7 AVR-1910/1620/1610/790/590

15、WIRE ARRANGEMENT If wire bundles are untied or moved to perform adjustment or parts replacement etc., be sure to rearrange them neatly as they were originally bundled or placed afterward. Otherwise, incorrect arrangement can be a cause of noise generation. Wire arrangement viewed from the top Back P

16、anel side Front Panel side RadioFans.CN 8 AVR-1910/1620/1610/790/590 DISASSEMBLY 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 asse

17、mbling 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

18、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 ASSY Refer to DISASSEMBLY 1.PANEL FRONT ASSYRefer to DISASSEMBL 2.PCB CNT1Refer to DISASSEMBLY 3.PCB SPEAKER ASS

19、Y and EXPLODED VIEWand EXPLODED VIEWand EXPLODED VIEW PCB 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 BACK

20、PCB POWER/POWER SUPPLY ASSY PCB ENCORDER Refer to DISASSEMBLY 4.CHASSIS BACKRefer to DISASSEMBLY (Ref. No. of EXPLODED VIEW : 13)and EXPLODED VIEW6.PCB POWER/POWER SUPPLY ASSY PCB HEAD PHONE ASSYand EXPLODED VIEW (Ref. No. of EXPLODED VIEW : 14)PCB POWER SUPPLY ASSY PCB V-AUX ASSY (Ref. No. of EXPLO

21、DED VIEW : 56) (Ref. No. of EXPLODED VIEW : 21)PCB POWER ASSY PCB MIC ASSYPCB MAIN ASSY (Ref. No. of EXPLODED VIEW : 57) (Ref. No. of EXPLODED VIEW : 22)Refer to DISASSEMBLY 5.PCB MAIN ASSY PCB CNT ENCORDERand EXPLODED VIEW (Ref. No. of EXPLODED VIEW : 61)PCB MAIN ASSYTRANS MAIN PCB SW (Ref. No. of

22、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 MAIN PCB VIDEO ASSY (Ref. No. of EXPLODED VIEW : 46) PCB AMP ASSY (Ref. No. of EXPLODED VIEW : 53) Refer to DISA

23、SSEMBLY 7.PCB AMP ASSYPCB DIGITAL ASSY and 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 above Front side Direction of photograph: B Directio

24、n of photograph: DDirection of photograph: C Direction of photograph: A RadioFans.CN 9 AVR-1910/1620/1610/790/590 1. 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 con

25、nector wire and FFC Cable. Proceeding :CABINET TOPPANEL FRONT ASSY View from bottom Direction of photograph: D Style pin : Loosecut Cord holder : Loose Cord holder : Loose Style pin : Loose CP1501 CP1300 Style pin : Loose CP1001 CP1705 FFC Cable CP1307cut Please refer to EXPLODED VIEW for the disass

26、embly method of each P.W.B included in PANEL FRONT ASSY. RadioFans.CN 10 AVR-1910/1620/1610/790/590 2. PCB CNT1 (1) Disconnect the connector board. 3. PCB SPEAKER ASSY (1) Disconnect the connector wires. (2) Remove the screws. Proceeding :CABINET TOPPCB CNT1 PCB CNT1 PCB CNT (1910/790 model) Board t

27、o board Board to board Board to board Proceeding :CABINET TOPPCB SPEAKER ASSY CP1001 (1910/790 model) CN1309 (1910/790 model) CP1002 (1910/790 model) CP1003 (1610/1620/590/ model), CP1004 (1610/1620/590/ model) PCB SPEAKER ASSY Direction of photograph: A RadioFans.CN 11 AVR-1910/1620/1610/790/590 4.

28、 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 BACK Direction of photograph: A Proceeding :CABINET TOPPCB SPEAKER ASSYCHASSIS BACK

29、 PCB MAIN ASSY CP1700 CP1002 CP1004 CP1001 CP1003 Style pin : Loose CP1001CP1005 CP1501CP1200 CP1000 CP1003 FFC Cable Style pin : Loose cut cut RadioFans.CN 12 AVR-1910/1620/1610/790/590 (1) Disconnect the connector board. (2) Remove the screws. Board to boardBoard to board Board to board PCB DIGITA

30、L ASSY PCB MAIN ASSY PCB VIDEO ASSY PCB EXT. ASSY (1910/790 model)PCB INPUT ASSY PCB HDMI ASSY RadioFans.CN 13 AVR-1910/1620/1610/790/590 6. 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. Procee

31、ding :CABINET TOPPCB POWER/POWER SUPPLY ASSY cut cut CP1705 CP1706 CP1704CP1700 Style pin : Loose PCB POWER ASSY PCB POWER SUPPLY ASSY ? RadioFans.CN 14 AVR-1910/1620/1610/790/590 7. PCB AMP ASSY (1) Remove the screws. (2) Cut the wire clamp band, then loose the style pin and Cord holder. Disconnect

32、 the connector wire. (3) Loose the style pin, then remove the screws. Proceeding :CABINET TOPPCB AMP ASSY View from bottom FFC Cable CP1200 CP1003 Style pin : Loose Style pin : Loose CP1005CP1001CP1001 CP1000CP1309CP1501 cut PCB AMP ASSY Direction of photograph: D Style pin : Loose Direction of phot

33、ograph: C RadioFans.CN 15 AVR-1910/1620/1610/790/590 8. 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 MAIN Direction of photograph: D Style pin : Loose CP1002 CP1004 CP1307 CP1300Cord holder : L

34、oose RadioFans.CN 16 AVR-1910/1620/1610/790/590 CAUTION IN SERVICING Initializing AV SURROUND RECEIVER AV 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

35、 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 servicing When you repair the printing board, you

36、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 Set 00D SPK- 562 9120 CONN. JOINT KIT : 1 Set When you update the firmware, you can use the following JIG (RS232C to internal connector

37、conversion adapter with 8P cable kit ). Please order to Denon Official Service Distributor in your region if necessary. 00DSPK-581 WRITING UNIT: 1 Set Note: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 initializat

38、ion mode. So make sure to m+emorize your setting for restoring after the initialization. SURROUND MODE 0 SURROUND MODE 1 ON/OFF RadioFans.CN 17 AVR-1910/1620/1610/790/590 SPECIAL MODE g Special mode setting button Press the ON/OFF button to turn on while pressing both buttons A and B at the same tim

39、e. ModeButton AButton BContents com/DSP Version display modeSTATUSDIMMER Serial 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 EQ Displayin

40、g the protection history (Refer to 19 page.) Initialization mode SURROUND MODE0 SURROUND MODE1 Backup 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/FM

41、50kHz STEP or AM:10k/ FM:200kHz. Mode for preventing remote control acceptance CURSOR 0RESTORER Operations using remote control are rejected. (Mode cancellation: Turn off power and execute the same button operations as when performing setup.) Panel lock mode SURROUND MODE0 RESTORER Operations using

42、main unit panel buttons or master volume are rejected. Panel lock mode (Remove Master volume) SURROUND MODE1 RESTOREROperations using main unit panel buttons are rejected. Cancellation of panel lock modeMENURESTORERPanel lock mode is cancelled. 0 0 DIMMER STATUSMULTEQ ENTER MENU SURROUND 0 MODE 1 ON

43、/OFF CURSOR SOURCE RESTORER RadioFans.CN 18 AVR-1910/1620/1610/790/590 1. com/DSP Version display mode 1.1. Operation specifications com/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 t

44、o turn the power on. Now, press the STATUS button to the display the 2nd item information on the FL Display. 1.2. Display Order Destination information Main-com version information Sub-com version information DSP version information APLD version information 1.3. Error display g See the following tab

45、le for each Error information display and its contents (status). Display order is . Condition State Display Sub-com NG No response from Sub-com DIR NG No response from DIR DSP NG When DSP boot, executing DSP reset makes no change to DSP FLAG0 port H. No change to DSP FLAG0 port H before issuing DSP

46、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

47、 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) RadioFans.CN 19 AVR-1910/1620/1610/790/590 2. Errors checking mode

48、(Displaying the protection history) 2.1. Operation specifications Error mode (Displaying the protection history): When started up, the error information is displayed. Starting up: All model commonness With the STATUS and MULTEQ buttons pressed, press the ON/OFF button to turn the power on. The error

49、 (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 display When 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 THERMALp