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3-18. A/C Head Azimuth and Horizontal Position Adjustment (AJ-D940)
50M : -125µs ≤ t1, t2 ≤ +125µs CUE OUT
VFK0357 (Eccentric Driver)
VFK1148 (Hex Driver)
VFK1209 (Torque Driver)
MODE ATF mode PLAY on PB L13ch Head
Format : 50M
Select item ”A05:PBL13 LINEAR” on
TAPE NTSC : VFM3582KM or VFM3582KL
PAL : VFM3682KM or VFM3682KL
1. Open the SERVO ADJUST MENU on Service Menu and select the item “A05 : PBL13 LINEAR”.
2. Playback a X-value alignment tape on 50M mode.
3. Adjust screw (F) so that the CTL and Lack part of CUE (t2) is match in the phase. (refer to A/C Head
Adjustment Procedure).
4. Confirm the lack track of envelope, and remember the HSW is high or low at the portion (H SW High or Low is
changed at each tape loading).
5. Adjust A/C Head Horizontal position so that the memorized HSW and CTL trigger at the frame start is match
in the phase (t1). The frame start CTL is located at the edge between 6 : 4 and 5 : 5 portion. To adjust A/C
Head Horizontal position, loosen the screw C and D, adjust the hole E by VFK0357. After adjustment tighten
the screw C and D with 24.5cN-m (2.5Kg) torque. At this time adjust the phase simultaneously with Azimuth so
that the CTL and CUE phase is kept.
6. Hit the top plate (portion L as shown in figure) of A/C Head lightly by a pointed end of Eccentric driver, then
confirm the phase is not shifted finally.
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