Harman Kardon HD750 Technical Manual Download Page 6

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HD750

Remote Control Functions

Display Button
Numeric Controls
Clear Button
Search Buttons
Skip Buttons
Stop Button
Play Button
Program Button
Pause Button
Check Button
Time Button
Random Button
Repeat Button
A B Button
Power On
Power Off
Open/ Close Button

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Summary of Contents for HD750

Page 1: ...CATIONS AND FEATURES 7 4 AUDIO CHARACTERISTICS TEST PROCEDURE 9 5 CIRCUIT DESCRIPTION 11 6 CRITICAL I C SPECIFICATION 15 7 PART LIST 41 9 BLOCK DIAGRAM 54 10 SCHEMATIC DIAGRAMS 55 11 PCB LAYOUT 59 12...

Page 2: ...coming from the pickup or allow it to strike against your skin This compact disc player uses a pickup that emits a laser beam The laser beam is emitted from the location shown in the figure When chec...

Page 3: ...can be damaged by electrostatic discharge from your clothes or your body Proper electrostatic grounding for service personal is required during servicing BEFORE REPAIRING THE COMPACT DISC PLAYER Prepa...

Page 4: ...utton Press this button to start the playback of a CD If the CD drawer is open pressing this button will automatically close the drawer When a disc is playing press this button once to momentarily sto...

Page 5: ...al to analog converter for direct access to the digital signals of HD750 DO NOT connect this jack to the standard audio inputs of any device Remote Control Input Connect the out put of a remote infrar...

Page 6: ...7 Display Button Numeric Controls Clear Button Search Buttons Skip Buttons Stop Button Play Button Program Button Pause Button Check Button Time Button Random Button Repeat Button A B Button Power On...

Page 7: ...0dB no HDCD 1 0 Vrms 1dB Output Level 1KHz 0dB HDCD output 2 0Vrms 2dB Frequency Response 20Hz 20KHz reference 0 1dB 0 5 1 5dB THD 1KHz 0dB 30KHz Filter 0 006 0 01 THD 1KHz 0dB no any filter 0 03 0 0...

Page 8: ...al Limit Black Dot TCD 725B 1000um 600um Interruption MCD 131 900um 600um Finger print 75um 65um Vertical Deviation MCD 151 0 92mm 0 92mm Eccentricity TCD 712 140um 140um 8cm test disc TCD 783 Last Tr...

Page 9: ...to LEVEL mode 3 Select track 2 of the test disc and play the CD disc 4 The output voltage and gain of the R L channels are taken by pressing the respective buttons on the control board of Audio Analy...

Page 10: ...io analyzer to DIST Mode 3 Set the unit of the audio analyzer to dB mode 4 Play track 17of the test disc 5 The dynamic range should be A 60dB Channel Separation 1 Set the mode of the filter to DIST CH...

Page 11: ...balance voltage VTBAL from Pin 31 VTBAL varies with reference to the center voltage VREF2 1 65 V within 0 5 V The tracking gain will change according to the type of disc For normal disc or CDR disc VG...

Page 12: ...voltage VFBAL from Pin 30 VFBAL varies with reference to the center voltage VREF2 1 65 V within 0 5 V The focus gain will change according to the type of disc For normal disc or CDR disc VGCTRL is set...

Page 13: ...l types of disc C38 connected to Pin 9 is for the AGC loop filter The RF Detection block detects the amplitude of the RF signal inputted from the EQ block Inputted RF signal is detected after passing...

Page 14: ...trolled current for getting regular output power thus the APC Auto Power Control circuit is composed Reference Power Supply A reference power supply for servo is built in The current capacity of the r...

Page 15: ...check Built in subcode Q data register CIRC error detection and correction C1 decoder duplex error correction C2 decoder triplex error correction Built in 16 K bits of RAM for use in de interleaving A...

Page 16: ...WVEL PLAY PLLF2 BCLK LRCK SRDATA DV DD1 DV SS1 TX MCLK MDATA MLD SENSE FLOCK TLOCK BLKCK SQCK SUBQ DMUTE STAT RST SMCK PMCK LDON BDO RFDET TRCRS OFT VDET RFENV TE FE TBAL FBAL VREF FOD TRD KICK ECS E...

Page 17: ...DON PLAY FLOCK TLOCK 40 42 11 12 26 KICK 21 TRV 16 DMUTE 1 BCLK 3 SRDATA 2 LRCK 23 PC 24 ECM 6 TX 64 IPFLAG 65 FLAG 22 TVD 27 TRD 28 FOD 31 TBAL 30 FBAL 43 WVEL 10 SENSE STAT X1 X2 MSEL CSEL PMCK FCLK...

Page 18: ...e block clock signal fBLKCK 75 Hz 14 SQCK I External clock input for subcode Q register 15 SUBQ O Subcode Q data output 16 DMUTE I Muting input Effective only for an output bit rate of 64 fs H level m...

Page 19: ...tput fPCK 4 3218 MHz or DSLB 54 VCOF2 I O VCO loop filter pin 55 SUBC O Subcode serial output 56 SBCK I Serial clock input for subcode serial output 57 VSS I Ground for oscillator circuit 58 X1 I Crys...

Page 20: ...channel audio outputs 73 OUTL O Left channel audio output 74 AVSS1 I Ground for analog circuits common use for left and right channel audio outputs 75 OUTR O Right channel audio output 76 RSEL I RF si...

Page 21: ...de band RF amp and AGC which meet CAV playback with 24 times speed or more Features Variable equalizer which meets CAV playback with 24 times speed or more CAV playback Wide band RF amp and AGC fC 20...

Page 22: ...TRL 28 FBAL 29 TEN 24 TEOUT 25 CROSS 21 CCRS 23 TBAL 30 VCC2 7 VCC1 4 GND 18 V REF1 20 BDO RF AGC BCA RFDET AC EQ ADD amp Amp 32 35 36 V REF2 22 PD 1 LD 2 FEOUT 27 FEN 26 OFTR 16 COFTR 15 BDO 14 CBDO...

Page 23: ...HPF of AGC input 9 AGC loop filter connection pin 10 AGC output pin 11 Capacitor connection pin for HPF amp 12 3TENV output pin 13 Capacitor connection pin for RF dark side envelope detection 14 BDO...

Page 24: ...Focus error amp BFO1 L VCC1 5 V VCC2 3 3 V 0 45 0 65 0 85 balance output 1 L VFB VREF2 0 5 V Focus error amp BFOH VCC1 5 V VCC2 3 3 V 4 35 6 35 8 35 dB balance relative output 2 H VFB VREF2 0 5 V Focu...

Page 25: ...dition relative gain 1 RF addition amp GRAD2 VCC1 5 V VCC2 3 3 V 1 0 0 1 0 dB addition relative gain 2 RF addition amp GRAD3 VCC1 5 V VCC2 3 3 V 1 0 0 1 0 dB addition relative gain 3 RF addition amp G...

Page 26: ...urrent IOFTR VCC1 5 V VCC2 3 3 V 0 98 1 40 1 82 A EQSW VREF2 0 5 V COFTR detection current ratio BIOFTR4 VCC1 5 V VCC2 3 3 V 3 0 3 8 4 6 EQSW VREF2 OFTR high level output voltage VOFTRH VCC1 5 V VCC2...

Page 27: ...NP tr Additional OP amp built in Applications MD CD CD ROM drive DVD DVD ROM drive HSOP042 P 0400 Unit mm 1 7 8 14 1 315 0 65 0 20 28 22 21 4 8 6 4 1 2 5 15 18 4 0 2 8 3 0 2 2 7 0 2 0 1 0 1 10 93 0 30...

Page 28: ...pin 6 Op amp non inverted input pin 7 Power supply pin 8 1 2 PVCC output pin 2 9 Driver power supply pin 2 10 Driver GND pin 2 11 Motor driver 4 reverse rotation output pin 12 Motor driver 4 forward r...

Page 29: ...or driver 1 High level threshold voltage VPCH1 VCC 5 V RL1 8 R1 10 k 2 0 V Low level threshold voltage VPCL1 VCC 5 V RL1 8 R1 10 k 0 5 V Motor driver 2 High level threshold voltage VPCH2 VCC 5 V RL2 8...

Page 30: ...not guaranteed Usage Notes 1 Avoid the short circuits between output and VCC and between output pin and GND Otherwise the IC is likely to break down or emit smoke 2 An appropriate prior study should b...

Page 31: ...re that im proves audio dynamic performance and reduces jitter sensitivity The internal digital filter operates at 8x oversampling at a 96kHz sampling rate with 120dB stopband attenuation Internationa...

Page 32: ...age 6 Full Scale 0dB 0 57 VCC Vp p Center Voltage 0 5 VCC V Load Impedance AC Load 5 k DIGITAL FILTER PERFORMANCE Filter Characteristics 1 fS 44 1kHz 48kHz optimal Passband 0 002dB 0 471fS 3dB 0 487fS...

Page 33: ...dB VO 60dB 33 dB Dynamic Range EIAJ A Weighted 96 dB Output Voltage Sine Wave 0dBFS 0 285VCC Vp p DYNAMIC ANALOG PERFORMANCE HDCD CD Digital HDCD SCALING 2 Total Harmonic Distortion Noise VO 0dB 0dBF...

Page 34: ...integrated circuit can be damaged by ESD Burr Brown recommends that all integrated circuits be handled with appropriate precautions Failure to observe proper handling and installation procedures can c...

Page 35: ...QCK SUBQ DMUTE STAT XRST PUSW CDRW P61 P60 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 P2 1 P2 0 P8 7 P8 6 AMUTE HDCD P8 3 P8 2 P8 1 P8 0 POWER DACRST DAC DATA DAC CLK DAC LD V CC PB 1 AN 1 PB 0 A...

Page 36: ...1 P50 INT0 Port 1 P10 TMOW P14 PWM P15 IRQ1 P16 IRQ2 P17 IRQ3 TRGV Port 2 P20 SCK3 P21 RXD P22 TXD Port 3 P30 SCK1 P31 SI1 P32 SO1 P90 FVPP P91 P92 P93 P94 Port 9 PB 0 AN 0 PB 1 AN 1 PB 2 AN 2 PB 3 AN...

Page 37: ...aser pickup inner switch 5V pickup at inner position 21 XRST CD DSP reset line 0V DSP reset 22 STAT CD DSP internal status output 23 DMUTE CD DSP mute control 5V mute on 24 SUBQ SUBQ output 25 SQCK SU...

Page 38: ...driver command serial data 52 VFD CLK Display driver command serial clock 53 VFD LAT Display driver command serial latch 54 P14 No connection 55 P15 No connection 56 P16 CD DSP internal status for aut...

Page 39: ...e l l o C I O B C V B C I V 0 4 E 0 1 0 A t n e r r u C f f o t u C r e t t i m E I O B E V B E I V 5 C 0 1 0 A n i a G t n e r r u C C D h E F 1 V E C I V 6 C A m 1 0 0 1 0 6 5 h E F 2 V E C I V 6 C...

Page 40: ...HD750 40...

Page 41: ...BON FILM RESISTOR 3 3K OHM 1 6W 5 TP52 5 R5 1003 304316 020 CARBON FILM RESISTOR 330K OHM 1 6W 5 AXIAL TAPE 1 R99 R146 R164 1003 902316 020 CARBON FILM RESISTOR 3 9K OHM 1 6W 5 AXIAL TAPE 3 R10 1003 9...

Page 42: ...1102 102024 000 ELECT CAP 1000UF 25V 20 3 C7 1102 220014 000 ELECT CAP 22uF 16V 20 1 C19 C21 C22 C26 C75 C112 C120 1102 221014 000 ELECT CAP 220UF 16V 20 7 C87 1102 221034 000 ELECT CAP 220UF 35V 20 1...

Page 43: ...S2M CSAN 1 2605 100502 000 50MM GND WIRE 1RING M3 AWG 22 BLK 2 Fuse Relay F2 F3 4030 100000 001 SLOW BLOW MICRO FUSE 1A 2 F1 4030 160000 512 FUSE 1 6A 250V GLASS TUBE SLOW BLOW BELL 5TT1 6 1 RL2 4050...

Page 44: ...D750 KEY PC BOARD REV A 1 VFD BOARD ASSEMBLY Reference Part Number Description Quality 9475 001000 261 HD750 VFD BOARD ASSY REV A Resistor R2 R3 R4 R5 R6 R7 R8 R10 R11 R12 R13 1001 001316 000 CARBON F...

Page 45: ...NET SILKSCREEN 1 6583 810004 000 HARMAN KARDON LOGO BADGE 1 6600 070003 000 CD90R05 RUBBER PAD LEG 4 6600 120040 000 SCREW NUT M4X7X3 2 6600 180007 000 AC CORD BUSHING PG5RF 5B 1 6600 240003 001 CLOSE...

Page 46: ...SCREW M2 6X8 W H B T B WASHER HEAD DIA 7 8MM 4 7002 616002 062 SCREW M2 6X16 W H P T P 1 7102 307003 022 WASHER 2 3X7 0X0 3MM 1 7102 712706 022 WASHER DIA2 7XDIA12 7X0 6mm ST ZN 4 RF 500TB 14415 DC M...

Page 47: ...TE CONTROL BOARD ASSY REV A Resistor R2 R3 R4 R5 1001 004316 000 CARBON FILM RESISTOR 100K OHM 1 6 W 5 4 R1 1001 507314 000 CARBON FILM RESISTOR 1 5 OHM 1 4W 5 1 Capacitor C1 C2 1100 221043 000 CERAMI...

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Page 56: ...HD750 CONTROL PANEL 56...

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Page 60: ...DISPLAY PANEL PCB POWER SWITCH PCB HEADPHONES PCB HD750 60...

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