HarmanKardon-DPR2005-avr-sm2维修电路原理图.pdf

《HarmanKardon-DPR2005-avr-sm2维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《HarmanKardon-DPR2005-avr-sm2维修电路原理图.pdf（11页珍藏版）》请在收音机爱好者资料库上搜索。

1、 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web harman consumer group SMPS DPR 1005/2005 Theory of operation and Service information By Andy Andersen RadioFans.CN 收音机爱 好者资料库 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web DPR 1005

2、/ 2005 Block Diagram A: Voltage Doubler and inrush B: Over Voltage protect C: Over Current protect D: Over Current / Voltage protect E: Multi Voltage SMPS F: Mosfet Bridge Figure 1 Page 2RadioFans.CN 收音机爱 好者资料库 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web Operati

3、on summary Applied AC line voltage for stand by. AC line voltage from the relay board goes to connector CN101 and supplies the voltage for transformer (T101). T101 supplies standby and run voltages +18VAB, ST5V H8.4V (AC for display). These are the source voltages for the micro (IC62) for stand by o

4、peration. The applied AC flows through inrush resistors R105 and R104 then rectified by BD101 to charge C106 and C107. BD101 with C106 and107 are configured as voltage doublers for 120 operation. Jumper J102 is removed for 240 volt operation. In either 120 or 240 volt operation 300 volts is develope

5、d for secondary transformer T102. Stand by to power on When a High signal is received to connector P-S/W (from micro on main board) Q201 turns on. Q201 controls optoisolator PC102. PC102 controls U101 at pin 3. U101 is the driver IC for the SMPS that supplies run voltages +5VA, +5vd, +12V,-12V, +18V

6、, +24V, +44V for the main board. Other activities at power on When voltage is developed at D101 and C108 (off T102 of the SMPS) RL101 closes (Pins 3, 4 make contact) A short is produced across the in rush resistors R105 and R104 (5W 15) Current now flows through RL101 and not the inrush resistors. A

7、t the same time voltage is applied to relay SK41 (located on the Outlet Board (rear relay board). Its contacts are wired across the main power switch and is used to prevent all the receivers current from flowing through the main power switch (the switch is rated for 8amps, relay for 20 amps). Power

8、on Once the secondary voltages are developed from T102 (smps), the micro sends a signal to power on (4volt high) the high current SMPS used for the D2 audio module (cn201 pin 11 P-CON, CN2 pin 1 PWR CNTR-2). IC U1 (PWM KA3525) pin 10 goes low, and a PWM signal is developed to pins 11,14 (out A/B) to

9、 two driver Transformers (T201, T202), then to a Mosfet Bridge to drive T103. Page 3 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web Details When AC is applied to the SMPS, R104 and R105 are used to protect the inrush to capacitor C106 and C107. After the voltages a

10、re developed from the SMPS of T102, Relay RL101 closes across the inrush resistors. For the 120 volt version to develop the 300 volts need to drive the two switch mode power supplies a bridge diode assembly is used for the full wave voltage doubler. For the 230/240 volt SMPS a voltage doubler is not

11、 necessary. To change from 120 to 240 volt operation, remove jumper J102 for the SMPS part of the power supply. Please note the standby transformer is specific for each AC voltage. The main power switch cannot handle the current the DPR can draw. A relay (SK41) was added to shunt the power switch at

12、 turn on. When the main switch is turned on and after voltage is developed in the stand by supply (from T101) the relay will close. At this point the main A/C portion of the power switch assembly cannot turn off the DPR. For power down the D/C portion of the power switch sends a command to the micro

13、 to sequence the power supply down, the last step is to release the power relay. Figure 2 Figure 3 Figure 4 Page 4 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web A group of small transistors, the protection latch and the PWM IC with its related components are locat

14、ed on a small upright daughterboard at the rear of the main SMPS board. When servicing this board, be aware of differences from the schematic and the actual PCB for CN1 (the schematic is correct but the PCB is wrong). U1, KA3525 is a common PWM IC. In servicing the PWM check for VCC pin 15, and VC,

15、VCC should be 15 volts. Power on SD pin 10 has to be low for the PWM to work. If not low check the signal from the CPU (CN201 pin 11) for a high. If the power on from the CPU is high check for a protect event trigger (could be a bad Mosfet or an over voltage problem and protect has triggered and lat

16、ched). From Standby to power on T102 develops the voltages for the secondary regulators. T102 and U101 are part of a single IC switch mode power supply. The micro sends an on command (pin6 CN201 P-S/W 5V) to optoisolator PC102. PC102 keeps Q101 off so a high can be developed on pin 3 of U101. The of

17、f state for U101 is pin 3 low. Pin 4 of U101 is the regulation control for the SMPS. Regulation is controlled by reference IC U201 (adjustable precision shunt regulators) controlling optical coupler PC101.Caution must be observed when working on this circuit. This is hot to the AC line voltage and i

18、s supplied by 300 volts from the main filter caps C106 and C107. Figure 5 Figure 6 Page 5 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web Protection for the D2 audio module is accomplished by monitoring over voltage and over current of the supply voltages developed

19、by T103. If a fault event is detected the output of U2 will be latched high to keep pin 10 of the PWM IC U1 high (power off). Over voltage is detected by IC U2A. A reference voltage is set for pin 2 (about 4.8 volts) and if that reference is exceeded at pin 3, pin 1 will go high. When the rise of pi

20、n 1 exceeds 6.2 volts (Zener D1 prevents false trigger), a high will be sent to pin 5 of U2B. The output pin 7 will now send a high to shut the D2 audio module supply off. The high from pin 7 is also sent through diode D2 to latch pin 7 high. The output of the op amp can not go low until power is re

21、moved from the op amp. The protection state is monitored by the CPU (CN201 pin10 M.OCP), and if a fault is detected a command is sent to put the DPR in standby. There is no other indication of a protect shutdown for the power supply, but there are protect modes for the D2 module (as mentioned in the

22、 D2 audio info in the service manual) that would be displayed. Figure 7 Figure 8 Page 6 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web Current sense transformer T203 detects the AC current flow for the high current needed for the D2 module. The AC from T203 goes to

23、 a diode bridge, rectified and the dc is sent to the protection IC U2. When the voltage exceeds 5 volt reference, the protect will trigger and latch. Do not adjust the over current pot VR201. This is set at the factory for a protect trigger of 31.2 amps at the 50 volt output (1.6 load). The output o

24、f the PWM IC (U1 KA3525 pins11, 14) drives two driver transformers (T201, T202). Using T201 for the example, trigger high (5 Volts through R16) turns on Q202 and stores energy in T201 through C248. When the Trigger goes low the energy stored in T201 is replaced through D222 and Q203. The result of u

25、sing this dual transistor setup is almost perfect square wave at the output of T201. The result is no ringing or over shoot at the pulse transformer dual outputs. Figure 9 Figure 10 Figure 11 Page 7 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web 300 volts DC suppli

26、es the mosfets Q102-Q104. The high current supply for the D2 module comes from T103. T103 is driven by 4 mosfets in a bridge mode to produce 600 volt PP for T103. Extreme caution is needed when working around the mosfets. How to test and run the DPR with the D2 amp board removed from the receiver. A

27、fter removing PCB (T/F code : PBD04KAM20) loaded with D2Audio, and connecting wire as pictured, then you will be able to check the operation of processor PCB and the SMPS. You can also check the signal 2ch-out and 8ch-preout (Remark): After checking, because of possible Semiconductor damage on Figur

28、e 12 Processor PCB, remove the connected wire first then load D2 AMP PCB. PCB CON3: schematic PCB CON3: bottom view Wire added P814 P815 Figure 13 Figure 14 Page 8 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web DPR1005/2005: Tech notes in no order Protection check

29、connector CN1 is hooked up in the print correctly but on the daughter board is hooked up to pin 5 of IC U2. The pin outs for CN201 have a different description on the main board and the pin numbers are reversed. The output mosfets on the DPR1005 are not IRFP3050 but SKH30N40. The service manual show

30、s only the 120 version. You must refer to the parts list for the correct value of the AC input components. The grounds are common on the SMPS but note that current and digital will take a different path out of the connectors. If a complaint of noise is noted check the solder on the connectors. The D

31、PR series is not lead-free or ROSH compliant. The standby transformer T101 will run warm. This is normal. The Over Current pot can not be adjusted by the service centers. In the case of the DPR2005 the 50 volt output load current would have to be set at 31.2 amps (1.6 Load) There are replacement com

32、ponents available except for the transformers. The heat sink of U101 can be used has the hot ground (ground for IC 101 and the power mosfets). Do not hookup without adding a screw, the coating on the heat sink is an insulator. ! Caution ! must be used around the primary side of T103. There is a 600

33、volt PP AC signal around the components! Power on Timing: The regulator SMPS (using IC U101) will turn on about one second before the D2 supply voltage raises. CN201 pin 6 (P-S/W) will turn on before pin11 (P-CON). The voltage out of CN203 (50 volts for the DPR2005, 39 volts for the DPR1005) turns o

34、n with a slow rise of 20v / Second. Figure 15 Page 9 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web A B C D E 300 volts PP Pin 1 of T202 off D223 5 volts per divisionPins 16, 18 on daughter board One half BTL output. 50 volts per division Page 10C250C250104104+ +C2

35、22C22250V220050V2200Q105Q105IRFP350IRFP350Q101Q101C1008C1008C254C2541000PF1000PFR R1 11 12 21/2W820K1/2W820KQ102Q102IRFP350IRFP350C103C103275V474275V474R15R156.8KF6.8KFZD201ZD2011/2W5V1/2W5VC C1 11 15 5224M224MR105R1055W155W15L201L20110uH10uHD203D203HER204HER204U203U203KA7818KA78181 13 32 2ININOUTOU

36、TG GC238C238104104T102T102EER3541EER35416 68 83 34 4101017177 72 25 518181 11 112121414151516161010C231C231104104R107R1071W100K1W100KR218R21810W2.2K10W2.2K+ +C108C10835V47035V470R208R2081/4W4.7KF1/4W4.7KFC232C232104104R104R1045W155W15Q103Q103IRFP350IRFP350+39V+39VL203L20310uH10uHBD202BD202DF06DF061

37、13 32 24 4 + + - -R R1 11 10 01/4W1001/4W100C C1 11 1104104Q202Q202C1008C1008LF102LF10210mH10mHGNDGNDR204R2041/2W 10K1/2W 10KR201R2011/4W 101/4W 10ST5VST5VR4R44.7KF4.7KF+ +C5C535V4735V47C9C9152J152JC125C125101 Y1101 Y1R8R84.7KF4.7KFR209R2091/4W4.7KF1/4W4.7KFR122R1225W4705W470C218C21835V47035V470+18V

38、A+18VACN202CN2025267-105267-101 12 23 34 45 56 67 78 89 91010ZD102ZD1021W15V1W15VL206L206100100- -+ +BD101BD101600V25A600V25ARL101RL101ALE15B12ALE15B124 43 31 12 2C126C126101 Y1101 Y1U1U1KA3525KA35252 21 13 35 56 67 78 89 9101016164 41 11 11414131315151212+V+V-V-VSYNCSYNCCTCTR RT TDISCDISCCSSCSSCOMP

39、COMPSDSDVREFVREFOSCOSCOUOUT TA AOUTBOUTBVCVCVCCVCCGNDGNDD207D207UF4004UF4004R18R181/4W1001/4W100GNDGNDL204L20410uH10uHD224D2241N41481N4148R123R1231W1.51W1.5R224R2241/4W4.7K1/4W4.7KGNDGNDLF101LF10110mH10mHC247C247104104R3R310KF10KFC101C101275V474275V474R109R1091W100K1W100KR210R2101/4W1K1/4W1KC205C205

40、25V100025V1000D217D217HER204HER204R14R142222R121R1211/4W3.9K1/4W3.9KC13C13104M104MR206R2061/4W100K1/4W100K0 0C127C127152 Y1152 Y1- -+ +D218-221D218-2211N41481N41481 12 23 34 4KJP-7013/DPR1005 - USKJP-7013/DPR1005 - US1 1AUDIO POWERAUDIO POWERA2A21 11 1WWednesdaednesday y, August , August 1 11, 2001,

41、 2004 4T Titl itle eSizeSizeDocument NumberDocument NumberRevRevDate:Date:SheetSheetofofU206U206KA7912KA79121 13 32 2I IO OG GC105C105152 Y1152 Y1+18VL+18VLC121C121250V 475K250V 475KR5R52.2K2.2KC206C20625V100025V1000+ +C229C22910V47010V470C210C21063V10063V100VR202VR2025K5KC251C251103103C120C120102Y1

42、102Y1R R1 11 19 91/4W3.9K1/4W3.9KR223R2231/4W4.71/4W4.7CN203CN20335313-08V35313-08V1 12 23 34 45 56 67 78 8C C11111 150V4750V47+39V+39V+44V+44VL207L2078uH8uHR R1 11 14.7K4.7KR R1 11 16 61/4W221/4W22C102C102275V474X275V474XQ205Q205A708A708ZD101ZD1011W15V1W15VC C50V4.750V4.7C C1 11 19 9152 Y1152 Y1C24

43、9C249105M105MR R1 11 13 31/4W 47K1/4W 47KU207U207KA7905KA79051 13 32 2I IO OG GT201T201EE1927EE19271 16 62 25 57 78 8R13R134.7KF4.7KFC246C246104104Q1Q12N22222N2222R202R2021/4W 101/4W 10H8.4VH8.4VD103D103UF4007UF4007C C1 11 16 6224M224MQ2Q22N22222N2222C241C2411KV1021KV102C234C234104104C3C3104104R9R94

44、.7KF4.7KFR225R2252.7KF2.7KFC6C6223223Q204Q204C1008C1008R R1 11 17 71/4W3.9K1/4W3.9KR1R1100KF100KFGNDGNDC1C1104104R216R21610W2.2K10W2.2KD104D104UF4004UF4004U204U204KA7805KA78051 13 32 2I IO OG GR102R1021/2W1M1/2W1M-12V-12VC C1 11 13 350V150V1C244C244104104R221R221220220R203R2032W4.7K2W4.7KU201U201TL4

45、31TL431R214R2141W221W22C227C22725V100025V1000C C1 11 14 4224M224MC204C20410V100010V1000C7C7152J152JC235C235104104R207R2071/4W3301/4W330P-CONP-CONPC101PC101ETET1 110103 3D101D101UF4004UF4004T203T203IRON13IRON13+ +C107C107200V1200200V1200M.OCPM.OCPV.CKV.CKQ203Q203A708A708R108R1081W220K1W220KPC102PC102

46、ETET1 110103 3C203C20310V220010V2200D1D16.2V6.2V+ +C216C21625V100025V1000L101L101L3550L3550U202U202S S111117-50P17-50PI I1 13 3ININOUTOUTD2D21N41481N4148H8.4VH8.4VC C1 11 10 0104104Q104Q104IRFP350IRFP350ZD103ZD1031W15V1W15VD222D222IN4148IN4148R2R21 11 11/4W4.7K1/4W4.7KP-S/WP-S/WR219R21910W2.2K10W2.2

47、KF101F101250V T12A250V T12AD223D2231N41481N4148+ +C224C22450V220050V2200GNDGNDD215D215KCF25A20KCF25A20C208C20835V100035V1000C C1 11 12 2104104R2R29.1KF9.1KFGNDGNDC214C21425V100025V1000C10C10104104ZD104ZD1041W15V1W15VR106R1061W100K1W100KT103T103EE5555AEE5555A5 59 91 11 1171718181414232320202222R215R2

48、1510W1.5K10W1.5KD206D206HER204HER204+5VA+5VAD202D20231DQ0631DQ06C209C20935V47035V470C220C22016V220016V2200L202L20210uH10uHC C1 11 17 7224M224MC2C21 11 163V10063V100R6R62.2K2.2KR R1 11 18 81/4W221/4W22GNDGNDT101T101EI4EI41 11 15 53 31 15 56 67 79 910108 8GNDGNDC C1 11 18 82KV2212KV221CN201CN2015267-5

49、267-1 11 11 12 23 34 45 56 67 78 89 910101 11 1T202T202EE1927EE19271 16 62 25 57 78 8R R1 11 14 41/4W221/4W22+ +C228C22863V4763V47R7R74.7K4.7KD214D214KCF25A20KCF25A20HS102HS102C219C21925V22025V220CN1CN15267-025267-021 12 2C245C245104104+ +- -U2BU2BLM393ALM393A5 56 67 78 84 4+ +C223C22350V220050V2200

50、R217R21710W2.2K10W2.2K+ +C106C106200V1200200V1200C128C128152 Y1152 Y1U208U208KA7815KA78151 13 32 2I IO OG GC248C248105M105MR213R2131W221W22D102D1021N41481N4148C104C104152 Y1152 Y1C253C253100PF100PFCN204CN2045267-025267-021 12 2L206-1L206-11010+ +C215C21516V220016V2200C243C243105M105MR220R2202K2KBD20