Service Manual
Page 7
...MiniDisc with this product, check the following before calling your authorised SHARP dealer or service centre. The recording time will be reduced. For MiniDiscs on how the disc has been recorded or edited. Therefore, the recording time will be reduced. MD-MS722... mode? Is the AC adaptor unplugged or did a power failure occur whilst recording or editing? Read the operation manual for approximately 30 ...MiniDiscs on the disc yet? When the unit is placed in ? If this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply...
...MiniDisc with this product, check the following before calling your authorised SHARP dealer or service centre. The recording time will be reduced. For MiniDiscs on how the disc has been recorded or edited. Therefore, the recording time will be reduced. MD-MS722... mode? Is the AC adaptor unplugged or did a power failure occur whilst recording or editing? Read the operation manual for approximately 30 ...MiniDiscs on the disc yet? When the unit is placed in ? If this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply...
Service Manual
Page 8
MD-MS722/C/W/MS721W - 8 - BLANK DISC (BLANK) Can't COPY (Not REC) Can't EDIT Nothing is damaged. Can't REC (Not REC) Can't WRITE DEFECT (DEFECT) Recording cannot be made because of the digital cable. The disc is recorded. The EJECT lever was recorded. Improper power is being erased. The ...left for a while and try recording again. There is out of recording space. Reload the disc or replace it with another recorded disc. Replace it . Replace the disc with another recordable disc. Turn off the power and remove the MiniDisc. Erase all of the disc has...
MD-MS722/C/W/MS721W - 8 - BLANK DISC (BLANK) Can't COPY (Not REC) Can't EDIT Nothing is damaged. Can't REC (Not REC) Can't WRITE DEFECT (DEFECT) Recording cannot be made because of the digital cable. The disc is recorded. The EJECT lever was recorded. Improper power is being erased. The ...left for a while and try recording again. There is out of recording space. Reload the disc or replace it with another recorded disc. Replace it . Replace the disc with another recordable disc. Turn off the power and remove the MiniDisc. Erase all of the disc has...
Service Manual
Page 13
... reflection disc MMD-110 (TEAC Test MD) 2 Lowreflection disc MMD-212 (TEAC Test MD) 88GMMD-110 88GMMD-212 3 Low reflection disc Recording minidisc UDSKM0001AFZZ Note: Use the low reflection...the process proceeds to connect the power supply). (3) Test Mode STOP [ _ T E S T _ ] 2. After the indication "INIT" -> "BYE OK" disappears, release the power supply of disc, namely recording disc (low reflection disc) ...position where the INNER switch is turned on which music has been recorded. MD-MS722/C/W/MS721W Test disc ADJUSTMENT MD adjustment needs two types of DC IN. DIGITAL INPUT Mode ...
... reflection disc MMD-110 (TEAC Test MD) 2 Lowreflection disc MMD-212 (TEAC Test MD) 88GMMD-110 88GMMD-212 3 Low reflection disc Recording minidisc UDSKM0001AFZZ Note: Use the low reflection...the process proceeds to connect the power supply). (3) Test Mode STOP [ _ T E S T _ ] 2. After the indication "INIT" -> "BYE OK" disappears, release the power supply of disc, namely recording disc (low reflection disc) ...position where the INNER switch is turned on which music has been recorded. MD-MS722/C/W/MS721W Test disc ADJUSTMENT MD adjustment needs two types of DC IN. DIGITAL INPUT Mode ...
Service Manual
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MD-MS722/C/WMS721W P30 P31 P32 A ATA ATA K K K ON ON CNT EMPH1 B C D E F G ...R481 36K C481 0.1 DSPSTB DSPSCK DSPDAT 7 7 TP485 TP484 TP483 TP482 TP481 6 5 4 3 2 1 1 CN482 FLEXIBLE PWB LCD LCD DRIVER MS722/MS722C MS722W/MS721W(S) /MS721W(BL) R765·766 10 27 L710 0.47µH EMPH0 +B +B C506 IC501 0.001 AK4519VF AD/DA C505 0.001... 76 54 3 2 1 RI LI AGND IR3R54N AUDIO AMP. C805 100/6.3 R814 1K 4 3 IC841 2 5 1 XC62HS02 POWER SUPPLY MICROCOMPUTER R842 1K R811 330K R812 180K R813 100K 1 2 R844 100K C804 1 D841 1SS361 TP808 R801 2.2K R800 560 R810...
MD-MS722/C/WMS721W P30 P31 P32 A ATA ATA K K K ON ON CNT EMPH1 B C D E F G ...R481 36K C481 0.1 DSPSTB DSPSCK DSPDAT 7 7 TP485 TP484 TP483 TP482 TP481 6 5 4 3 2 1 1 CN482 FLEXIBLE PWB LCD LCD DRIVER MS722/MS722C MS722W/MS721W(S) /MS721W(BL) R765·766 10 27 L710 0.47µH EMPH0 +B +B C506 IC501 0.001 AK4519VF AD/DA C505 0.001... 76 54 3 2 1 RI LI AGND IR3R54N AUDIO AMP. C805 100/6.3 R814 1K 4 3 IC841 2 5 1 XC62HS02 POWER SUPPLY MICROCOMPUTER R842 1K R811 330K R812 180K R813 100K 1 2 R844 100K C804 1 D841 1SS361 TP808 R801 2.2K R800 560 R810...
Service Manual
Page 41
... not operate.Clean the objective lens,and check the playback operation.When this section may be No set ? Turn the power off. Is the power supply turned on when the remote control button or main unit button is pressed? No Is playback state set ". button Is...switch of isopropyl alcohol. Perform the check stated in item "Playback state connot be caused by build up to 10 errors) are recorded as mentioned below." MD-MS722/C/W/MS721W TROUBLESHOOTING It is advisable to use the TEST mode (refer to "L"? Causes of operation errors (up of troubles before starting repair...
... not operate.Clean the objective lens,and check the playback operation.When this section may be No set ? Turn the power off. Is the power supply turned on when the remote control button or main unit button is pressed? No Is playback state set ". button Is...switch of isopropyl alcohol. Perform the check stated in item "Playback state connot be caused by build up to 10 errors) are recorded as mentioned below." MD-MS722/C/W/MS721W TROUBLESHOOTING It is advisable to use the TEST mode (refer to "L"? Causes of operation errors (up of troubles before starting repair...
Service Manual
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MD-MS722/C/WMS721W FUNCTION TABLE OF IC IC401 RH-iX2772AF03(IX2772AF):System Microcomputer (1/2) Pin No. Ground potential 19 PE4 PCNT1 Outout Vref supply control output of power IC 20 PE5 SYRS Output System LSI register selection output 21 PE6 _SYRD Output System LSI read enable output ... 34 PC2 _INPGI Input Line/digital plug insertion detection 35 PC3 INPGCK Input Line/digital plug type detection 36 PC4 RCPCNT Output Record circuit power control output 37 PC5 TEST1 Input Test mode setting input 1 38 PC6 TEST0 Input Test mode setting input 0 39 PC7 ...
MD-MS722/C/WMS721W FUNCTION TABLE OF IC IC401 RH-iX2772AF03(IX2772AF):System Microcomputer (1/2) Pin No. Ground potential 19 PE4 PCNT1 Outout Vref supply control output of power IC 20 PE5 SYRS Output System LSI register selection output 21 PE6 _SYRD Output System LSI read enable output ... 34 PC2 _INPGI Input Line/digital plug insertion detection 35 PC3 INPGCK Input Line/digital plug type detection 36 PC4 RCPCNT Output Record circuit power control output 37 PC5 TEST1 Input Test mode setting input 1 38 PC6 TEST0 Input Test mode setting input 0 39 PC7 ...
Service Manual
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...64 STBY 65 Vcc _STBY VCC Input - laser power setting output 87 AVss AVSS - Ejection lever operation detection input Positive power supply 99 P10 PCNT2 Output Vcc supply control output of power IC 100 P11 HDON Output Recording head current control output In this unit, the ... 85 AN6 TEMP Input Ambient temperature detection input 86 DA1 LDVAR Output P.U. Crystal connection terminal 67 EXTAL EXTAL - MD-MS722/C/W/MS721W IC401 RH-iX2772AF03(IX2772AF):System Microcomputer (2/2) Pin No. Ground potential 89 P24 90 TIOCB4 START MCMON Input Output ...
...64 STBY 65 Vcc _STBY VCC Input - laser power setting output 87 AVss AVSS - Ejection lever operation detection input Positive power supply 99 P10 PCNT2 Output Vcc supply control output of power IC 100 P11 HDON Output Recording head current control output In this unit, the ... 85 AN6 TEMP Input Ambient temperature detection input 86 DA1 LDVAR Output P.U. Crystal connection terminal 67 EXTAL EXTAL - MD-MS722/C/W/MS721W IC401 RH-iX2772AF03(IX2772AF):System Microcomputer (2/2) Pin No. Ground potential 89 P24 90 TIOCB4 START MCMON Input Output ...
Service Manual
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....,IR3R54N J AQ Audio Amp.,IR3R54N J AE 2.5V Regulator,TK71225M J AD Constant Current Drive, HN1C03FU J AH Power Select Charge Drive, NDH8304P J AL Power Drive,IR3M09N J AE P-ch MOS FET,CPH3303 J AE Power Supply Microcomputer, XC62HS02 J AF C-MOS Logic,7WH123FU J AL Power Drive,IR3M09N J AE N-ch MOS FET,CPH3403 J AE 4.5V Regulator (ON/OFF),TK71345M J AM 3-Phase... µH RCILC0353AFZZ J AB Tip Solid Induction,100mA RCILC0352AFZZ J AB Tip Impeder,150mA RCILC0353AFZZ J AB Tip Solid Induction,100mA RCILC0353AFZZ J AB Tip Solid Induction,100mA NO. MD-MS722/C/W/MS721W NO.
....,IR3R54N J AQ Audio Amp.,IR3R54N J AE 2.5V Regulator,TK71225M J AD Constant Current Drive, HN1C03FU J AH Power Select Charge Drive, NDH8304P J AL Power Drive,IR3M09N J AE P-ch MOS FET,CPH3303 J AE Power Supply Microcomputer, XC62HS02 J AF C-MOS Logic,7WH123FU J AL Power Drive,IR3M09N J AE N-ch MOS FET,CPH3403 J AE 4.5V Regulator (ON/OFF),TK71345M J AM 3-Phase... µH RCILC0353AFZZ J AB Tip Solid Induction,100mA RCILC0352AFZZ J AB Tip Impeder,150mA RCILC0353AFZZ J AB Tip Solid Induction,100mA RCILC0353AFZZ J AB Tip Solid Induction,100mA NO. MD-MS722/C/W/MS721W NO.