2-26
3-18. A/C Head Azimuth and X-value Adjustment (25M)
TEST RP ENV
POINT PB HSW
CUE
SPEC As shown in below figure.
-250µs ≤ t1, t2 ≤ +250µs
CTL
Refer to item “2. Table of Test
Point.
ADJ. A/C Head each screw M.EQ Oscilloscope
MODE See below TOOL VFK0357 (Eccentric Driver)
TAPE NTSC : VFM3582KM or VFM3582KL VFK1148 (Hex Driver)
PAL : VFM3682KM or VFM3682KL VFK1209 (Torque Driver)
VFK1375 (Hex Bit)
(Classified list) (CTL Reference)
TYPE
Model TYPE Reference (Trigger)
A AJ-D440, AJ-D450, AJ-D640, A Falling edge: refer to below figure (4b).
AJ-D650, AJ-D750, AJ-D850 B, C Rising edge: refer to below figure (4a).
AJ-D200, AJ-D210, AJ-D215,
AJ-D400, AJ-D700, AJ-D800, (VTR mode)
AJ-D220, AJ-D230, AJ-D230H,
ATF PLAY mode by RP Head. (refer to [A/C Head
AJ-D250, AJ-LT75, AJ-LT85 Adjustment mode] on item “2. Table of Test Point”.)
1. Set the VTR mode on Service Menu with type A and C models.
2. Playback an X-value Alignment tape.
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 select the HSW correspond with it (The lack track is correspond HSW
high with L ch).
5. Adjust A/C Head Horizontal position so that the reference of HSW and CTL trigger are match in the phase (t1).
To adjust X-value, 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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