Panasonic DVC PRO Studio AJ-D950P Service Manual page 34

5.6.21. A/C Head Azimuth and Horizontal Position Adjustment
Specification 25MMode -250us<=t1, t2<=+
250us
50MMode -125us<=t1, t2<=+
125us
Adjustment A/C Head
Mode Playback
Tape VFM3582KM (A/C Head H.
Position)
1. Set the VTR in 25M Mode and playback an Alignment Tape (A/C
Head H. Position).
2. Adjust Azimuth so that the CTL and CUE drop portion is match
(Refer to Azimuth Adjustment).
3. Connect a scope CH1 to TP201 on H3 board and CH2 to TP722 on
F1 board. Then find the R/P ENV lack portion, and remember the
H_SW is High or Low at the portion. (H_SW High or Low is changed
at each tape loading.)
4. Adjust A/C Head Horizontal Position so that the memorized H_SW
and CTL trigger at the frame start is matched. The frame start CTL
is located at the falling edge between 6:4 and 5:5 portion. To adjust
Test Point
M. EQ
Tool
34
TP201 R/P ENV L(RFEQ:H3)
TP722 R/P HSW (SERVO:F1)
TP101 CUE AUDIO (CUE:H1)
TP30 CTL (SERVO:F1)
Oscilloscope
VFK0357(Eccentric Driver)