Kenwood DPX701 Service Manual

Also see for DPX-MP7090U: Instruction manual

Contents

22DPX701/701U/701UYDPX-MP7090U● Operation∗ Trigger for starting the sequence: detecting the inserted discwith SW 1 and 3 LOW edge.(As an exception, protect LOAD when EJECT error)SW1(LOS SW)SW3(12EJE SW)SW4(LOE/LIM SW)LOAD_ERR1LOAD_ERR2LOAD qwERR conditionSpecialcaseCD LOAD ERROR DETECTIONq If the protect timer was counted up before the LOS (SW1)up edge detection, it is recorded as LOAD_ERR1.w If the protect timer was counted up after the LOS (SW1) upedge detection, before the LOE/LIM (SW4) up edge detec-tion, it is recorded as LOAD_ERR2.∗ When DISC was inserted briefly but pulled out immediately(DISC is detected but not inserted), it is considered as anerror.Special case: Even if LOS (SW1) up edge is not detected,if LOE/LIM (SW4) up edge is detected, it is still recorded asLOAD_ERR1. Also, if SW4 up edge is detected, the motoris stopped.CD EJECT ERROR DETECTION● OverviewRecord the number of times when mechanism error (SW er-ror) occurred at CD EJECT.EJECT error recording shall be done in 4 patterns, by the SWstatus illustrated below (3 patterns in models other than TYPE-J).EJECT error is established when EJECT operation is not com-pleted after EJECT operation is started before the protect timercount is completed (False EJECT, or ejection with no CD, isconsidered as exception and is not recorded).(False EJECT is determined when: while chucking is not done,and when SW status is determined as NO DISC.)Clearing of record is done in the following situations :1) After reset is cancelled, when reading EEPROM, the codeis NG.2) While in test mode, the specified key (Play/Pause keypressed for 2 seconds) is input.3) When in EEPROM all-clear initialization mode (refer tothe test mode specification document).• Indication is shown on the test mode specification docu-ment.• Number of times with error(s) is 99 times at MAX.• Not recorded in test mode [1+3 keys].• When EJECT was error, re-try 3 times, and count each er-ror while re-try as 1 error.● Operation∗ Trigger for starting the sequence: detecting DISC ejectionby EJECT key. (As an exception, protect EJECT when LOADerror)q If the protect timer was counted up before the LOS (SW1)down edge detection, it is recorded as EJECT_ERR1.w If the protect timer was counted up after LOS (SW1) downedge before the 12EJE (SW3) down edge detection, it isrecorded as EJECT_ERR2.r If the protect timer was counted up after LOS (SW1)/12EJE(SW3) down edge before the down edge detection of anyof these, it is recorded as EJECT_ERR4.∗ When EJECT is started, if not chucking, it is not counted asEJECT error (considered as false EJECT). However, EJECTwhen SW change is detected.SW1(LOS SW)SW3(12EJE SW)SW4(LOE/LIM SW)EJECT_ERR2EJECT_ERR4EJECT qwERR condition EJECT_ERR1r