Pb Head Lista Sensitivity Adjustment And Sensitivity Detection (25M Mode) - Panasonic DVCPRO50 Service Manual

3-34. PB Head LISTA Sensitivity Adjustment and Sensitivity Detection
(25M Mode)
SPEC.
Sensitivity 100±10 (mV/µm)
MODE
SERVO Adjustment Menu "A17 : PBL GAIN 25"
! ATF (PB-L)
TEST POINT
" H SW (PB-L)
# GND
ADJUSTMENT
SERVO Adjustment Menu: "A17 : PBL GAIN 25"
TAPE
NTSC: VFM3581KM or VFM3581KL(LISTA)
(PAL: VFM3681KM or VFM3681KL(LISTA))
1. Open the Service Menu and select "A17: PBL GAIN 25" in the "SERVO ADJUST" menu. Set the Lista software
in 25M mode. 25M and 50M mode can be changed by "0" key.
2. Playback a LISTA alignment tape (VFM3581KM or VFM3581KL).
3. Select the LISTA Main Menu "(6) ATF Error Signal Monitor" so that the screen of <ATF Error Signal monitor>
appears. Then press Enter to start the software.
4. When the picture is appeared as shown in figure 3-34-3, adjust ATF Gain (A17: PBL GAIN 25) so that the "Sens.
Value:" is in the Specification.
5. After finishing the Adjustment, press ESC key to return the main menu.
6. Select the Lista Main Menu "(1) Sensitivity Measurement" so that the screen of <ATF Error Signal monitor>
appears (refer to 3-34-2).
7. Playback a Lista alignment tape and press "ENTER" to start the Sensitivity measurement.
8. Confirm that the sensitivity value is within the specification. (refer to figure 3-34-3).
9. If it is out of specification, return to item 3.
TP5701 RF (F8) (not TP6701 (R/P-L ATF))
TP232 SERVO (F7)
TG102
Figure 3-34-1
In case "ATF Error Signal Monitor"
or "sensitivity Measurement" is selected.
Figure 3-34-2
Select for sensitivity detection
Select for Linearity adjustment
Select for sensitivity
adjustment
MECH-29