Marantz MAR770 manuals
Home Audio > CD Player
When we buy new device such as Marantz MAR770 we often through away most of the documentation but the warranty.
Very often issues with Marantz MAR770 begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in CD Player Marantz MAR770 is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for CD Player on our side using links below.
Marantz MAR770 Service Manual
45 pages 3.23 Mb
DR6050DR6050 Compact Disc Recorder DR6050 Service ManualDR6050 / www.electronicsrepair.net/F1B, /K1B, /N1B, /U1B2 MARANTZ DESIGN AND SERVICEJAPAN ORDERING PARTS : SHOCK, FIRE HAZARD SERVICE TEST :001120MIT USA BRAZIL EUROPE / TRADING CANADA AUSTRALIA NEW ZEALAND THAILAND TAIWAN MALAYSIA AMERICAS AUSTRALIA KOREA SINGAPORE 3 1. Servicing the DR60501.1 INTRODUCTION: 1.2 OPENING THE PRODUCT: Playback & Recording and Disc 4 IMPORTANT5 2 TECHNICAL SPECIFICATIONS6 LASER PRODUCT CLASS 3BCLASS III b WARNUNG WAARSCHUWING AVVERTIMENTO Varning ! Advarsel ! Varoitus ! ESD SAFETYAVAILABLE ESD PROTECTION EQUIPMENT : U : VERSION N : VERSION LASER PRODUCT8 6. Diangostic Software6.1 Dealer mode 6.2 Dealer diagnostics DEALER DIAGNOSTICS(status of player) 6.3 Electrical service diagnostics 9 ELECTRICAL SERVICE DIAGNOSTICS"SW VERSION CD LOADER" (software versions, test for defective components)PLAYER INFORMATION"PLAYER ID" "SW VERSION BACK END" "SW VERSION CDR LOADER" "DTST1" "DTST2" "DTST3" "DTST4" "DTST5" "DTST6" "DERRn" LOADER TESTS"BERR1" "NO CDDA" "NO DISC" "BERR2" "NO CDDA" DISPLAY TEST KEYBOARD & RC TEST Player information CDR main board test DRAM test Flash checksum test Flash data erase CODEC (ADC/DAC) test CDR communication test CD communication test Loader tests CDR loader test CD loader test Display test Keyboard and remote control tests 10 6.4 Mechanical service diagnosticsFocus control test Sledge control test Tray control test 6.5 DC-erase service mode 11 DC ERASE SERVICE MODE(erasement of complete CD-RW) 12 7. Faultfinding trees16 CD MODULE17 CD MODULE PLAYBACK8. Faultfinding Guide8.1 Display BoardFigure 8-1 8.1.1 Description of display board General description Display controller TMP87C874F 18 C P U BLOCK DIAGRAM PIN DESCRIPTIONS19 Supply voltagesClock signal Control signals RESET I2C DATA/I2C CLK FTD drive lines Filament voltage Grid lines Segment lines Key matrix lines 21 19 20 22 8.2 Power Supply Unit P816 15 VC Figure 8-11 Figure 8-10 Blockdiagram P816 Description of controller MC44603 Pin connectionsOvervoltage Protection (OVP) Current Sense Input Demag. Detection Foldback Input CT Output Gnd VCC3 4 2 14 13 1 16CL 96532076_030.eps 290799 SWITCHING POWER SUPPLY PCB. (P801) 25 ch2 : Drain current ch3 : Gate voltagech2 : Oscillator voltage ch3 : Sense voltageCircuit description of P816 Input circuit 26 APrimary rectifier/smoothing RStart up circuit and Vcc supply Control circuit Power switch circuit Regulation circuit Demagnetisation Overvoltage protection circuit Secondary rectifier/smoothing circuit On/off circuit 2.5V K27 8.3 CD Main BoardFigure 8-19 8.3.1 Supply Voltages Figure 8-22 28 MeasurementsFigure 8-20 8.3.2 Clock Signals Measurements Connect the power supply as described above in "1.1.1. Supply Voltages". s.PROCESSOR Figure 8-21 8.3.3 CD10 Decoder/Servo SAA7324 (7000) Block DiagramTrigenta HF amp. CD10 SERVO DECODER UDA1320 DAC CDM VAM1250 Point Voltage Position 1000 pins 1,3 +5V 5%Position 7000 pins 5,17,21,57 +3.3V 5% 5%Position 7020 pins 25 +5V 5%Position 7020 pins 26,27,28 +10 10% 10 10 5% 5% ( other appl. 3V3 possible)Position 7309 pins 4,13 +3V3 5% 10CL96532086_049.eps 080999 Point Frequency Position 7000 pin 16 8.4672 MHz 100ppm Position 7202 pins 14,15 12MHz 5% Position 7309 pin 6 11.2896 MHz 100ppm Position 7309 pin 1 2.1168 MHz 100ppm Position 7309 pin2 44.1kHz 100ppmCL96532086_050.eps 080999 29 Pin ConfigurationSAA7324 Figure 8-23 8.3.4 TDA7073A Power Drivers (7021, 7022) Figure 8-24 Description MeasurementsFigure 8-25 8.3.5 BA6856FP Turn Table Motor Driver (7020) Description MeasurementsPin Location Value 5 7021 12V 10% 5 7022 12V 10% 1 7022 1.65V 10% 2 7022 1.65V 10% 6 7022 1.65V 10% 7 7022 1.65V 10% 1 7021 5.0 10% 2 7021 5.0 10% 6 7021 1.65V 10% 7 7021 1.65V 10%CL96532086_053.eps 080999 Pin Location Value DC 9 7022 FOC 5.8V CL96532086_054.eps 080999 30 Motor controller truth tableHall-elements input signal voltage levelsDescription Measurements Description3193 180R 180p 3180 10K 3205 2160 2138 F157 F313 Figure 8-28 DC SettingsFigure 8-29 2137 47u 2161 100p 2162 3169 3189 390R 3188 3203 2140 31 n=1 AMPn-dependant filtering n=2 AMP DUAL 4 CHANNEL MUX/DEMUX HFIN E AMPCL96532086_057.eps 080999 Force Pin Location Measure Emitter 7006 2.4 10% S1 and S2 HIGHCollector 7010 1.9 10% S1 and S2 LOWCollector 7010 1.9 10% S1 and S2 HIGH13 7025 1.6 10% S1 and S2 LOW13 7025 1.6 10% S1 and S2 HIGH3 7025 3.2 10% S1 and S2 LOW3 7025 3.2 10%CL96532086_058.eps 080999 32 Transfer CharacteristicsHFDET Setting 20% 150mV 20% 175mV 20% 4.8V Description I2S WORD-SELECT CLOCK DATA 20% 200mV < 100mV Location Voltage DC Voltage AC No HF HF F190 4.8V 20% F192 < 100mV 1.1V 20% - F206 4.9V 20% - 9. WIRING DIAGRAM 34 .... .....36 10. BLOCK DIAGRAMCDL 4009 LOADER ASSY CD OUTDEMUXSLEDGE TRAY SWITCH TURN TABLE RC5 KEYS DRAM RAM CDM3800PCS PRE-AMP POWER DRIVER FLASH EPROM DASP LASER & FORWARD SENSE PHOTO DIODES RADIAL FOCUS AEGER ANALOG ERROR SIGNAL GENERATOR FOR RECORDABLE LASER CONTROL XDAC HF AMP FILTER I2C EEPROM EFMTIM3 CDR60 DECODER ENCODER MOTOR CONTROL EFM TIMING GENERATOR FLASH ROM CODECDIGITAL AUDIO SIGNAL PROCESSOR MACE2BASIC ENGINE PROCESSOR SLAVE DISPLAY CONTROLLER EASY JOG DISPLAY ASSY I/O BOARD HEADPHONE POWER SUPPLY UNIT CD PLAYER CDR MAIN BOARD 37 POWER11. SCHEMATIC DIAGRAM AND PARTS LOCATIONPY4614001705 1410LCHVDC2 VFTD VDC1 CLKIIC OUTRC-5 INRC-5 STANDBY CDR KILL 15001708 J852 P916 PY26 PY36 PY16 PP16OUTRC-5 INRC-5 DOBM 5V OUT INCOAX INOPT RCH LCHINREC J851 DISPLAY CD CDRCD 5V GND INTERRUPT GND DATAIIC RESETN Q891 Q801Q810 Q825 Q861 Q862 L820 L8315V WA386K106-0 F820 S815 J820 C821L851 L853 U103 U054 L856 L862 L854 C855 C856 C851 R828 R825 R894 D861 R861 L832 D807 D806 Q825 C825 C826 L820 R832J851 C868 U050 U004 C866 D871 R814 R815 C809 C802 R823J881 Q871 L872 R805 C891 C867 R887 R885 R884 Q801 C820 Q810 D804D803C803 D829 R810 C804 R804 R803 C829 C801 C813 R808 D814 R801 R807 R883 C882 R886 C892 C864 R862 R852 R853 C859 R806 R802 R809 R812 C811 C814 C881 J828J821Q891 D881 C833 C872L861 C861 L873 R816 C873 L867 U001U002 U003 U006 U007 U051 U052 U053 U102 U104 J891 C828 + L831 Q871 Q892 Q851 P81616 8 9 10 15 12 14 13 57 11 38 SWITCHING POWER SUPPLY PCB. (P816)L831 MC44603P41 42J901 PY16 QY01 QY02 - QY04 PY36 39 WA386K107-0PP16PY46P916 L901 J902 C901 WA386K107-0 U030 P916 TTR
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