SERVICE MODE -2/2
4. ON/OFF laser change The ON/OFF of the laser is changed to the degree which pushes the PLAY MODE key in STOP state or during Err indicating.
Fig.5 LCD indication in stop
5. Thread Sending Operation of Pickup By the fact that it continues to push the FWD/RVS SKIP key in STOP state or during Err indicating the pickup it operates to the inside and outside lap. FWD SKIP key: Peripheral direction RVS SKIP key: Inside perimeter direction 6. Focusing search mode TOC read after the completing, length pushes the DSL key in STOP state. Focus search operation is 1 time and observation of a S character waveform is possible for it with an oscilloscope (IC501 23pin). The servo gain change of the CD-DA/R and the CD-RW is effective. As for LCD indicatory value there is no stipulation at such as amplitude value.
Fig.6 LCD indication at time of focusing search mode
7. CD-DA/R and CD-RW servo gain change At the time of TEST MODE starting, the servo gain of CD-DA/R. TOC read after the completing, change is possible in the degree which pushes the DSL key in STOP state. (Fig.7 reference)
Fig.7-1 CD DA/R
Fig.7-2 CD-RW
8. Tracking / thread servo ON/OFF change The ON/OFF it can point to tracking / thread servo to the degree which pushes the ENTER key in the PLAY.
