Hitachi-HCUR700UC-rec-sm维修电路原理图.pdf

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1、CAUTION: Before servicing this chassis, it is important that the service technician read the “Safety Precautions” and “Product Safety Notices” in this service manual. ATTENTION: Avant deffectuer lentretien du chassis, le technicien doit lire les Prcautions de scurit et les Notices de scurit du produ

2、it prsents dans le prsent manuel. VORSICHT: Vor ffnen des Gehuses hat der Service-Ingenieur die Sicherheitshinweise“ und Hinweise zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen. SERVICE MANUAL MANUEL DENTRETIEN WARTUNGSHANDBUCH DatacontainedwithinthisService manualissubjecttoalterationfo

3、r improvement. Les donnes fournies dans le prsent manuel dentretien peuvent faire lobjet de modifications en vue de perfectionner le produit. DieindiesemWartungshandbuch enthaltenen Spezifikationen knnen sich zwecks Verbesserungen ndern. OCTOBER 2000 MINI COMPONENT HI-FI SYSTEM HCUR700UC HCUR700E HC

4、UR700EBS HCUR700W SM0104 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT CONTENTS SPECIFICATIONS.3 SERVICE POINTS.4 WIRING DIAGRAM.17 PRINTED CIRCUIT BOARD.21 EXPLODED VIEW.83 REPLACEMENT PARTS LIST.87 ADJUSTMENTS 1Vp-p (75/ohms), C; 0.3Vp-p (75/ohms) COMPONENT: Y; 1Vp-p (75/ohms), CB

5、; 0.7Vp-p (75/ohms) CR; 0.7Vp-p (75/ohms) Audio frequency response: DVD: 2 Hz to 22 kHz (48 kHz sampling), 2 Hz to 44 kHz (96 kHz sampling) CD: 2 Hz to 22 KHz (44.1 kHz sampling) Power supply: UC: AC 120V 60Hz E, EBS : AC 230V 50Hz W, WUN: AC 110 127V 50/60Hz : AC 220 240V 50/60Hz Power consumption:

6、 14W Maximum external dimensions: 210(W) x 96.5(H) x 309(D) mm (including feet, controls and terminals) Weight: 2.8 kg REMOTE CONTROL SECTION Remote control unit: RB-HTAR150 (for systems), RB-HDVR100 (for HDV-R100) Remote control system: Infrared pulse Power supply: Two DC 1.5V R6P/AA batteries * Sp

7、ecifications are subject to change for performance improvement without notice. HCU-R700 4 1. Removal of Top Cover (1) Remove 4 screws 1 from each side. (2) Remove 4 screws 2 from the rear plate. S E RV I C E P O I N T S A V S U R R O U N D R E C E I V E R ( H T A - R 1 5 0 ) 2. Removal of Front Pane

8、l (1) Remove 4 screws 5 from the bottom of the front panel. (2) Remove 2 screws 3 and 2 catches from both side. (3) Remove 2 screws 4. (4) Remove Connector A. (5) Remove 2 screws 6 of P.W.B. bracket to remove Connector B to H. B C D G H E F 5 4 3 3 4 Catch Catch Fig. 2 Fig. 4 Fig. 3 6 A Fig. 1 1 2 1

9、 HCU-R700 5 Fig. 6 Fig. 5 4. Removal of Power Transformer (1) Remove the 4 screws 8. (2) Remove Connector I to K. 3. Removal for Rear Panel (1) Remove 20 screws 7. 7 8 I J K HCU-R700 6 5. Removal of P.W.B. Board. (1) Remove 1 screw 9 and 1 screw 10. (2) Remove 2 screw 11. (3) Remove 5 screws 12 from

10、 the bottom of chassis. (4) Remove 2 pieces of P.W.B. holder a from the bottom chassis. 12 a Fig. 7 11 Fig. 8 9 10 Fig. 9 HCU-R700 7 6. Removal of Front P.W.B. Board. (1) Pull the Volume knob away, and remove the nut. (2) Pull out 2 Bass/Treble knobs and remove the nuts. (3) Remove the Function knob

11、. (4) Remove 9 screws 13. 13 Fig. 11 Nut Nut Volume knob Bass/Treble knob Function knobFig. 10 HCU-R700 8 1. Removal of Top Cover (1) Remove 2 screws 1 from both side. (2) Remove 4 screws 2 from the rear panel. D V D / C D / V I D E O C D P L A Y E R ( H D V - R 1 0 0 ) 2. Removal of Front Panel (1)

12、 Remove 4 screws 3 from the bottom of the front panel. (2) Remove 2 screws 4 and 2 catches from both side. (3) Remove Connector A and B. Fig. 2 3 Fig. 3 4 4 Catch Catch A B 1 1 2 Fig. 1 HCU-R700 9 4. Removal of Main P.W.B. Board (1) Remove 4 screws 6. (2) Remove Connector C and D. 3. Removal of Rear

13、 Panel (1) Remove 6 screws 5. 5. Removal of Power Supply Board (1) Remove 4 screws 7. (2) Remove Connector E. Fig. 45 Fig. 5 Main P.W.B Board C D 6 Fig. 6 7 E HCU-R700 10 6. Removal of Deck Mechanism Assy (1) Remove 4 screws 8 to release the mechanism cover. (2) Remove 4 screws 9. 7. Removal of Fron

14、t P.W.B. Board (1) Remove away the Front Metal. (2) Pull out the Enter Button. (3) Remove 9 screws 10. Fig. 8 Fig. 9 Fig. 7 8 8 9 10 Enter Button Front Metal HCU-R700 11 I O P M E A S U R E M E N T M E T H O D When measuring Laser drive current (Iop), playback the discs (CD, DVD) described below, me

15、asure Iop for CD Laser and DVD Laser by the test point (LD1 - LD4) on the SERVO P.W.B. TEST DISC : DVD / DVDT-S01 (Manufactured by ALMEDIO INC) CD / TCD-784 (Manufactured by ALMEDIO INC) or commercially available Discs. 1. DVD Laser current measurement (1)Connect the oscilloscope GND side to test po

16、int LD1 near R147 and oscilloscope signal side to test point LD2 near R147. (2)Playback the title 1 / chapter 1 of the DVD Test Disc. (3)Measure the voltage between LD1 and LD2, calculate Iop as follows. 2. CD Laser current measurement (1)Connect the oscilloscope GND side to test point LD3 near R148

17、 and oscilloscope signal side to test point LD4 near R148. (2)Playback the track 1 of the CD Test Disc. (3)Measure the voltage between LD3 and LD4, calculate Iop as follows. When repairing, carry out failure diagnostics by following the procedure described below. If the present value of the laser dr

18、ive current is 50% up to initial value, it is the point of the pickup replacement. In case of the pickup replacement, replace the Traverse Unit with no adjustment. The initial value is indicated on the label on back side of Mecha. If the present value exceeds 80mA, replace the Traverse Unit with a n

19、ew one. Cause : Damaged electrostatically when replaced. Iop = Measurement Voltage Value 39 (Resistance Value) Iop = Measurement Voltage Value 39 (Resistance Value) O P T I C A L P I C K U P D I A G N O S T I C S A N D R E P L A C E M E N T LD3 LD2 LD1 R148 R147 LD4 LD2 LD1Oscilloscope + NO DISC ind

20、icated, Playback not smooth, etc Laser drive current check HF signal check Present value : 50% up to initial value Traverse Unit replacement (refer to the next page) Laser drive current check after replacement. If the present value is less than 80mA, write on the new label by hand, put on the new la

21、bel over the old label. Mechanism Unit bottom side HCU-R700 11 CHECKING THE WAVEFORMS To check the waveforms on the SERVO P.W.B., the GND () probe of the Osilloscope to “ ref” point. NOTES MEASURING DISC : DVD / DVDT-S01 CD / TCD-784A (It is better to use wires for extending between the probe and te

22、st points.) When watching the HF waveform, use the extending wire as short as possible. When HF waveform is noisy or can not discriminate the eye-pattern, replace the Traverse Unit after measuring the Iop. Test points 1 $ are shown below. ) O U T, T M + T M + 9TR+ (TP) 8TR (TP) 5FO (TP) ? ; A B C ?

23、; D ? ; D ? ; A B C ? E F G H = E ? I J = = K D E LM N J LM H N E DO A DP L 9 B 9 N Q I H N = F 9 B 9 N K D E LM N J L M H N E ? I A B C B D K D E LM N J LM H N E RS T U V W TX YZ T U V T U X T U V W T T U V Z T U V X _ S T U V a b a Z c S T U V X d Z T U V R e d Z a e T U V a X T U V ? ? 9 | L ? ?

24、9 : B ? 9 HCU-R700 20 19 W I R I N G D I A G R A M D V D / C D / V I D E O C D P L A Y E R ( H D V - R 1 0 0 ) CN601 CN602 FL PWB W101 W1A W1B SW PWB PG001 W4B W1B PG2 PG101 PG602 SUPPLY PWB W1 W4 E, EBS W, WUN ONLY PG601 PG3B CN101 MAIN PWB 1 10 1 2 39 40 1 7 1 2 1 4 1 10 1 3 17 1 3 CN2 CN601 CN602

25、 CN101 AP1 AC CORD W102 DVD MECHA CN2 PG3A SERVO PWB 4 11 40 PG4 PG5 PG6 PG7 PG8 1 1 1 5 3 6 1 1 15 24 2 39 HCU-R700 21 PRINTED WIRING BOARD AV SURROUND RECEIVER (HTA-R150) Component SideSoldering Side FL PWB HCU-R700 22 Component Side DSP PWB DIGITAL PWB HCU-R700 23 Soldering Side DSP PWB DIGITAL P

26、WB HCU-R700 24 Component SideSoldering Side E.VOL PWB HCU-R700 25 Component Side Soldering Side VIDEO PWB HCU-R700 26 Component Side FUNCTION PWB TU PWB HCU-R700 27 Soldering Side FUNCTION PWB TU PWB HCU-R700 28 Component Side SUPPLY PWB SP EXT PWB HCU-R700 29 Soldering Side SUPPLY PWB SP EXT PWB HC

27、U-R700 30 Component Side RECT PWB AC OUTLET (E) PWB AC OUTLET (UC) PWB HCU-R700 31 Soldering Side RECT PWB AC OUTLET (E) PWB AC OUTLET (UC) PWB HCU-R700 32 Component Side POWER PWB TRANS (1) PWB TRANS (2) PWB HCU-R700 33 Soldering Side POWER PWB TRANS (1) PWB TRANS (2) PWB HCU-R700 34 Component Side

28、 Soldering Side VOL SEL PWB VOL SEL PWB HCU-R700 35 PRINTED WIRING BOARD DVD/CD/VIDEO CD PLAYER (HDV-R100) Component Side MAIN PWB HCU-R700 36 Soldering Side MAIN PWB HCU-R700 37 SUPPLY PWB Component Side Soldering Side HCU-R700 35 Component Side FL PWB HCU-R700 36 Soldering Side FL PWB HCU-R700 37

29、Component Side HCU-R700 38 Soldering Side HCU-R700 42 HCU-R700 CIRCUIT DIAGRAM DSP Circuit 44 43 45 HCU-R700 CIRCUIT DIAGRAM PO/FL Circuit 47 46 48 HCU-R700 CIRCUIT DIAGRAM TU-MAIN Circuit 50 49 51 HCU-R700 CIRCUIT DIAGRAM PO/FL Circuit (FL DISP/TONE BLOCK) 53 52 54 HCU-R700 CIRCUIT DIAGRAM MAIN Cir

30、cuit 56 55 57 HCU-R700 59 58 60 DIGI DECCSN RDN WRN DECINT MASTER SLAVE CSEL LO AUGND RO FM- FM+ INSWN BRKN FG STBN MGND DGND TEB FEB EQB EQF DFCTN VRCK SCD SCL SCB ATAPI TATAPI2H.sch DSP TDSP2H.sch CPU TCPU2H.sch FEP TFEP2H.sch TR- FO- FO+ TR+ DPDB RFI RFCT FEI TEI FEZI RFSB RFRP RFZI DMO TR- TR+ F

31、O- FO+ TM+ TM- FM+ FM- STBN TMM RFCT RFZI TEZI RFI FEI TEI RFSB RFRP DMO TEB FEB DPDB EQB EQF DFCTN VRCK SCD SCL SCB FGAUGND LO RO RSTN MA8 RDN WRN DSPCSN DSPINT DIGI DIGI PDCK PDRQN PSYCN PD0.8 SMCK MA0.6DSPINT DECINT RESET FG RDN TR- FO- FO+ TR+ FM- FM+ INSWN BRKN FG STBN DMO SCB SCL SCD VRCK RFZI

32、 RFRP RFSB FEZI TEI FEI DFCTN RFCT RFI DPDB TEB FEB EQB EQF DIGI PDCK PDRQN PSYCN PD0.8 SMCK MD0.7 MA0.6 DECCSN RDN WRN DECINT MASTER SLAVE CSEL LO AUGND RO MA8 MA0.6 MD0.7 BRKN FG RESET DECINT DSPINT DSPCSN DECCSN TMM RSTN STBN INSWN CSEL SLAVE MASTER WRN RDN TM- TM+ FG SCB SCL SCD VRCK DFCTN EQF E

33、QB DPDB FEB TEB DMO RFRP RFSB TEI FEI RFI TEZI RFZI RFCT TMM STBN FM- FM+ TM- TM+ FO+ FO- TR+ TR- DIGI PDCK PDRQN PSYCN SMCK PD0.8 MD0.7 DSPINT DSPCSN WRN RDN MA8 RSTN RO LO AUGND DIGI AUGND LO RO AUGND LO RO AMUTE AMUTE AMUTE AMUTE P-HIGH P-LOW P-HIGH P-LOW P-LOW P-HIGH P-LOW P-HIGH CD/DVD CD/DVD C

34、D/DVD CD/DVD MGND DGND MGND DGND DGND MGND DGND MGND MGND DGND DGND MGND DGND MGND TMM DECCSN DSPCSN STBN RSTN WRN MASTER SLAVE CSEL INSWN TM+ TM- BRKN MD0.7 MA0.6 MA8 MD0.7 PD0.8 SMCK PSYCN PDRQN PDCK MD0.7 CIRCUIT DIAGRAM SERVO Circuit (1) HCU-R700 CIRCUIT DIAGRAM SERVO Circuit (2) NC 36 NC 1 VSS

35、2 H2 3 /HCS1 4 /HCS3 5 /DASP 6 CSEL 7 VSS 8 VDD 9 BD15 10 BD14 11 BD13 12 BD12 13 BD11 14 BD10 15 BD9 16 BD8 17 VDD 18 VSS 19 BD4 20 BD5 21 BD7 22 BD6 23 BD3 24 BD2 25 BD1 26 BD0 27 VSS 28 /BWU(/BWE) 29 /BWL(/CSAL) 30 /CAS(/CASU) 31 /RAS 32 /BOE 33 BA8 34 VDD 35 NC 144 VDD 109 HD7 110 HD8 111 HD6 11

36、2 HD9 113 HD5 114 HD10 115 VSS 116 HD4 117 HD11 118 HD3 119 HD12 120 HD2 121 HD13 122 HD1 123 HD14 124 HD0 125 VDD 126 VSS 127 HD15 128 HDRQ 129 /HWR 130 VSShr 131 /HRD 132 VSS24 133 IORDY 134 VDD24 135 VSS 136 /HDAK 137 INTRQ 138 /IOCS16 139 HA1 140 /PDIAG 141 HA0 142 VDD 143 NC 72 NC 37 VSS 38 BA7

37、 39 BA6 40 BA5 41 BA4 42 BA0 43 VSS 44 BA2 45 BA1 46 BA3 47 TEST0 48 TEST1 49 TEST2 50 VSSck 51 XI 52 XO 53 VDDck 54 DIGO 55 NC 56 PDCK 57 PDRQN 58 PSYCN 59 PDA8 60 (SBSY)PDA7 61 (SFSY)PDA6 62 (SBDI)PDA5 63 VSS 64 (CLCK)PDA4 65 (C2PI)PDA3 66 (DAI)PDA2 67 (BCKI)PDA1 68 (LRCK)PDA0 69 VSS 70 NC 71 NC 1

38、08 NC 73 AZCK 74 ABCK 75 ADO 76 ACHCK 77 VDD 78 SEDVD 79 VSS 80 MD0 81 MD1 82 MD2 83 MD3 84 MD4 85 MD5 86 MD6 87 MD7 88 VSS 89 VDD 90 MA0 91 MA1 92 MA2 93 MA3 94 MA4 95 MA5 96 MA6 97 /MCE 98 /MRD 99 VSS 100 /MWR 101 /MINT 102 TESTOUT 103 /RST 104 VDD 105 VSS 106 VSS 107 IC1 TC9469BF VCC 1 I/O1 2 I/O

39、2 3 I/O3 4 I/O4 5 VCC 6 I/O5 7 I/O6 8 I/O7 9 I/O8 10 NC 11 NC 12 /WE 13 /RAS 14 NC 15 A0 16 A1 17 A2 18 A3 19 VCC 20 VSS 40 VSS 21 A4 22 A5 23 A6 24 A7 25 A8 26 /OE 27 /UCAS 28 /LCAS 29 NC 30 I/O9 31 I/O10 32 I/O11 33 I/O12 34 VSS 35 I/O13 36 I/O14 37 I/O15 38 I/O16 39 IC2 M11B416256A +12V 1 GND CN2

40、 PG3A 2 GND 3 +5V 4 /RESET 1 GND 2 DD7 3 DD8 4 DD6 5 DD9 6 DD5 7 DD10 8 DD4 9 DD11 10 DD3 11 DD12 12 DD2 13 DD13 14 DD1 15 DD14 16 DD0 17 DD15 18 GND 19 (KEY) 20 DMARQ 21 GND 22 /DIOW 23 GND 24 /DIOR 25 GND 26 IORDY 27 CSEL 28 /DMACK 29 GND 30 INTRQ 31 /IOCS16 32 DA1 33 /PDIAG 34 DA0 35 DA2 36 /CS0

41、37 /CS1 38 /DASP 39 GND 40 MASTERGND SLAVEGND CSELGND AUDIO L GND GND AUDIO R D-OUT D-OUT R1 0R0 R4 OPEN R7820 R16330 R17330 R18330 R19330 R20330 R21330 R22330 R23330 R32220 R8820 R9820 R33220 R10820 R34220 R11820 R12820 R13820 R24330 R25330 R26330 R27330 R28330 R29330 R30330 R31330 R14820 R15820 PD

42、 BUS DD0 DD1 DD2 DD3 DD4 DD5 DD6 DD7DD8 DD9 DD10 DD11 DD12 DD13 DD14 DD15 R35 0R0 R36 0R0 R37 0R0 R38 0R0 R39 0R0 L1 FBM2125HM330-B BC1 104Z BC2 104Z MA BUS MD BUS BC3 104Z DIGI PDCK PDRQN PSYCN DSP DSP DSP DSP DSP D+5V SMCK L2 FBM2125HM330-B D+5V RO AUGND LO CSEL SLAVE MASTER DECINT WRN RDN DECCSN

43、C1 104Z R63 472 R65 103 R66 103 D1 1SS355 D2 1SS355 D+5V IN 1 G 2 OUT 3 IC5 BA033FP BC5 104Z BC6 104Z + EC20 10V220 D+3.3VA+3.3V D+5V A+5V M+5V L4 FBM2125HM330-B L5 FBM2125HM330-B BC7 104Z BC8 104Z BC9 104Z L6 FBM2125HM330-B +12V BC10 104Z DSP DSP DSP CPU CPU CPU CPU/DSP CPU/DSP CPU CPU CPU CPU/DSP

44、DGND AGND MGND AA0 AA1 AA2 AA3 AA4 AA5 AA6 AA7 PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7 PD8 AA8 AD0 AD1 AD2 AD3 AD4 AD5 AD7 AD6 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 AA0 AA1 AA2 AA3AA4 AA5 AA6 AA7 AA8 AD8 AD9 AD10 AD11 AD12 AD13 AD14 AD15 OE UC LC RA WE OE RA UC LC WE DD0 DD1

45、DD2 DD3 DD4 DD5 DD6 DD7 DD8 DD9 DD10 DD11 DD12 DD13 DD14 DD15 R67 103 R100 473 R68 103 R69 103 R116 562 BC11 104Z BC12 104Z BC13 104Z BC14 104Z BC15 104Z BC16 104Z BC17 104Z R70 103 BC18 104Z BC19 104Z BC20 104Z BC21 104Z R71 103 R117 102 DSP + EC23 16V100 AUGND MD0 MD1 MD2 MD3 MD4 MD5 MD6 MD7 MA0 MA1 MA2 MA3 MA4 MA5 MA6 C73 102K C74102K C72 104Z R164 471 DIGIATAPI L12 BK2125HS470-B L13 BK2125HS470-B RESETCPU IN 1 G 2 OUT 3 IC4 PST600E X1 50MHz XC6 050K XC5 100K R52 682 R53 682 R54 682 R55 682 R56 682 R57 682 R58 682 R59 682 D+5V R60 682 R61 682 R62 682 R135 682 R174 682 R175