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

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 Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web DPR 1005 / 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 RadioFans.CN Harman Consumer Group 250 Crossways Park Dr. Woodbury, New York 11797 Email T Web Operation 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 operation. 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 developed 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, +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. At 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 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 two driver Transformers (T201, T202), then to a Mosfet Bridge to drive T103. RadioFans.CN 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 are 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 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 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 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 located 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, 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 latched). 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 off 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 is 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 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 pin 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 removed 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 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 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 of 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 using 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 supplies 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. After 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 Figure 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 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 shows 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 DPR 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 components 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 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 on 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 division Pins 16, 18 on daughter board One half BTL output. 50 volts per division Page 10 C250C250 104104 + + C222C222 50V220050V2200 Q105Q105 IRFP350IRFP350 Q101Q101 C1008C1008 C254C254 1000PF1000PF R R1 11 12 2 1/2W820K1/2W820K Q102Q102 IRFP350IRFP350 C103C103 275V474275V474 R15R15 6.8KF6.8KF ZD201ZD201 1/2W5V1/2W5V C C1 11 15 5 224M224M R105R105 5W155W15 L201L201 10uH10uH D203D203 HER204HER204 U203U203 KA7818KA7818 1 13 3 2 2 ININOUTOUT G G C238C238 104104 T102T102 EER3541EER3541 6 6 8 8 3 3 4 4 1010 17177 7 2 2 5 5 1818 1 11 1 1212 1414 1515 1616 1010 C231C231 104104 R107R107 1W100K1W100K R218R218 10W2.2K10W2.2K + + C108C108 35V47035V470 R208R208 1/4W4.7KF1/4W4.7KF C232C232 104104 R104R104 5W155W15 Q103Q103 IRFP350IRFP350 +39V+39V L203L203 10uH10uH BD202BD202 DF06DF06 1 13 3 2 24 4 + + - - R R1 11 10 0 1/4W1001/4W100 C C1 11 1 104104 Q202Q202 C1008C1008 LF102LF102 10mH10mH GNDGND R204R204 1/2W 10K1/2W 10K R201R201 1/4W 101/4W 10 ST5VST5V R4R4 4.7KF4.7KF + + C5C5 35V4735V47 C9C9 152J152J C125C125 101 Y1101 Y1 R8R84.7KF4.7KF R209R209 1/4W4.7KF1/4W4.7KF R122R122 5W4705W470 C218C218 35V47035V470 +18VA+18VA CN202CN202 5267-105267-10 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 1010 ZD102ZD102 1W15V1W15V L206L206 100100 - -+ + BD101BD101 600V25A600V25A RL101RL101 ALE15B12ALE15B12 4 4 3 3 1 1 2 2 C126C126 101 Y1101 Y1 U1U1 KA3525KA3525 2 2 1 1 3 35 5 6 6 7 7 8 8 9 9 1010 1616 4 4 1 11 1 1414 1313 1515 1212 +V+V -V-V SYNCSYNCCTCT R RT T DISCDISC CSSCSS COMPCOMP SDSD VREFVREF OSCOSC OUOUT TA A OUTBOUTB VCVC VCCVCC GNDGND D207D207 UF4004UF4004 R18R18 1/4W1001/4W100 GNDGND L204L204 10uH10uH D224D224 1N41481N4148 R123R123 1W1.51W1.5 R224R224 1/4W4.7K1/4W4.7K GNDGND LF101LF101 10mH10mH C247C247 104104 R3R3 10KF10KF C101C101 275V474275V474 R109R109 1W100K1W100K R210R210 1/4W1K1/4W1K C205C205 25V100025V1000 D217D217 HER204HER204 R14R14 2222 R121R121 1/4W3.9K1/4W3.9K C13C13 104M104M R206R206 1/4W100K1/4W100K 0 0 C127C127 152 Y1152 Y1 - -+ + D218-221D218-221 1N41481N4148 1 1 2 2 3 3 4 4 KJP-7013/DPR1005 - USKJP-7013/DPR1005 - US1 1 AUDIO POWERAUDIO POWER A2A2 1 11 1WWednesdaednesday y, August , August 1 11, 2001, 2004 4 T Titl itle e SizeSizeDocument NumberDocument NumberRevRev Date:Date:SheetSheetofof U206U206 KA7912KA7912 1 13 3 2 2 I IO O G G C105C105 152 Y1152 Y1 +18VL+18VL C121C121 250V 475K250V 475K R5R5 2.2K2.2K C206C206 25V100025V1000 + + C229C229 10V47010V470 C210C210 63V10063V100 VR202VR202 5K5K C251C251 103103 C120C120 102Y1102Y1 R R1 11 19 9 1/4W3.9K1/4W3.9K R223R223 1/4W4.71/4W4.7 CN203CN203 35313-08V35313-08V 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 C C11111 1 50V4750V47 +39V+39V +44V+44V L207L207 8uH8uH R R1 11 1 4.7K4.7K R R1 11 16 6 1/4W221/4W22 C102C102 275V474X275V474X Q205Q205 A708A708 ZD101ZD101 1W15V1W15V C C 50V4.750V4.7 C C1 11 19 9 152 Y1152 Y1 C249C249 105M105M R R1 11 13 3 1/4W 47K1/4W 47K U207U207 KA7905KA7905 1 13 3 2 2 I IO O G G T201T201 EE1927EE1927 1 1 6 6 2 2 5 5 7 7 8 8 R13R13 4.7KF4.7KF C246C246 104104 Q1Q1 2N22222N2222 R202R202 1/4W 101/4W 10 H8.4VH8.4V D103D103 UF4007UF4007 C C1 11 16 6 224M224M Q2Q2 2N22222N2222 C241C241 1KV1021KV102 C234C234 104104 C3C3 104104 R9R9 4.7KF4.7KF R225R2252.7KF2.7KF C6C6 223223 Q204Q204 C1008C1008 R R1 11 17 7 1/4W3.9K1/4W3.9K R1R1 100KF100KF GNDGND C1C1 104104 R216R216 10W2.2K10W2.2K D104D104 UF4004UF4004 U204U204 KA7805KA7805 1 13 3 2 2 I IO O G G R102R102 1/2W1M1/2W1M -12V-12V C C1 11 13 3 50V150V1 C244C244 104104 R221R221 220220 R203R203 2W4.7K2W4.7K U201U201 TL431TL431 R214R214 1W221W22 C227C227 25V100025V1000 C C1 11 14 4 224M224M C204C204 10V100010V1000 C7C7 152J152J C235C235 104104 R207R207 1/4W3301/4W330 P-CONP-CON PC101PC101 ETET1 110103 3 D101D101 UF4004UF4004 T203T203 IRON13IRON13 + + C107C107 200V1200200V1200 M.OCPM.OCP V.CKV.CK Q203Q203 A708A708 R108R108 1W220K1W220K PC102PC102 ETET1 110103 3 C203C203 10V220010V2200 D1D1 6.2V6.2V + + C216C216 25V100025V1000 L101L101 L3550L3550 U202U202 S S111117-50P17-50PI I 1 1 3 3 ININOUTOUT D2D2 1N41481N4148 H8.4VH8.4V C C1 11 10 0 104104Q104Q104 IRFP350IRFP350 ZD103ZD103 1W15V1W15V D222D222 IN4148IN4148 R2R21 11 1 1/4W4.7K1/4W4.7K P-S/WP-S/W R219R219 10W2.2K10W2.2K F101F101 250V T12A250V T12A D223D223 1N41481N4148 + + C224C224 50V220050V2200 GNDGND D215D215 KCF25A20KCF25A20 C208C208 35V100035V1000 C C1 11 12 2 104104 R2R2 9.1KF9.1KF GNDGND C214C214 25V100025V1000 C10C10 104104 ZD104ZD104 1W15V1W15V R106R106 1W100K1W100K T103T103 EE5555AEE5555A 5 5 9