Pioneer DV-F727 Service Manual page 65

Simple Adjustment of Disc Detection
Connection Diagram for Adjustment
Player
Adjustment Procedure
1. Connect an oscilloscope.
2. Turn the POWER SW to ON.
3. Open the Food.
4. Press the "SINGLE LOADER PLAY" button of the player without putting a disc.
Start the disc detection if loading is come and there is no disc.
5. If the peak value is 950 - 1100mV while a disc detection goes arround the disc, is OK.
6. When peak value is except for OK range, adjust VR601 and repeat steps 3 - 5.
VOLB ASSY
VR601
KN601
Peak Peak
Minimum Maximum
VR601
Stopped 22 - NOV - 1999 16 46
CH2 = 200mV
DC P*10
GND
Go arround
(except for single loader)
CH1 CH2
(X) (Y)
Chassis GND
DV-F727, DV-F07
2 s/d
Peak value is
OK with 950 - 1100mV.
Oscilloscope
65