Pioneer DV-F727 Service Manual page 64

DV-F727, DV-F07
2
Disc-select Rotation Adjustment
Connection Diagram for Adjustment
Player
Adjustment Procedure
1. Connect all equipment as shown in the diagram.
2. Turn on the power (Normal mode) and put the test disc in the No. 1 disc slot.
3. Enter the Test mode by pressing the "ESC" → "TEST" button of the test mode remote control unit.
4. Press the "DIG/ANA" button of the test mode remote control unit. (Disc 1 is clamped.)
5. Adjust VR601 on the VOLB Assy so that the voltage becomes 830 ± 5mV.
6. Switch the connection of Digital multimeter from INPUT to OUTPUT of the Jig.
7. Press the "DIG/ANA" button of the test mode remote control unit. (Starts the disc detection and peak hold .)
8. Confirm the voltage during the disc detection.
If voltage is between 920 to 1170mV, go to step 13. If not, go to step 9.
9. Switch the connection of Digital multimeter form OUTPUT to INPUT of the Jig.
10. Press the "DIG/ANA" button of the test mode remote control unit. (Disc 1 is clamped.)
11. Adjust VR601 to become the value for addition (or subtraction) that to have an adjustment voltage.
(Refer to the following table.)
12. Perform steps 6 to 8 again and confirm the voltage during the disc detection.
If voltage is between 920 to 1170mV, go to step 13. If not, repeat steps 9 to 12.
13. Confirm that Disc No. display doesn't become "1" others when you turn the Jog dial.
14. Release the Test mode by pressing the "ESC" button or turn off the power.
Adjustment voltage value
Peak hold voltage (mV)
to 859
859 to 879
879 to 920
920 to 1170
1170 to 1309
1309 to 1520
1520 to 1840
1840 to 2220
2220 to
64
VOLB ASSY
VR601
KN601
Adjustment voltage (mV)
+20
+10
+ 5
OK
- 5
-10
-20
-30
-40
–8V
GND
+8V
JIG
(Peak hold circuit)
SW
INPUT OUTPUT
DC power supply
A
V
Digital multimeter
GND
(Under Base)