Tape Transport System Adjustment - Hitachi DV-RF7U Service Manual

Dvd video recorder with video cassette recorder
Hide thumbs Also See for DV-RF7U:
Table of Contents

Advertisement

Adjustment > VCR Mechanism Adjustment

5-3-2 Tape Transport System Adjustment

When parts are replaced, perform the required adjustments, referring to the procedures for
adjusting the tape transport system. If there are any changes to the tape path, first run a T-120 (E-
120) tape and make sure that no excessive tape wrinkle occurs at the guide posts.
· If tape wrinkle is observed at the supply and take-up guide rollers, turn the supply and take-up
guide rollers until wrinkle disappears.
· If the tape wrinkle is still observed at the #8 guide post, perform the ACE head tilt adjustment.
(1) ACE Head Assembly Adjustment
a. ACE Head Height Adjustment
1) Play back the alignment tape.
2) Observe the surface of audio head using a dental mirror.
3) Turn screw (C) clockwise or counterclockwise until the gap between the lower tape edge and the
lower edge of control head is approx. 0.25 mm. (See Fig. 5-3-3 and Fig. 5-3-4)
X-VALUE
ADJUSTING SLIT
SCREW (B)
AZIMUTH ADJUST
VIDEO TAPE
(See Fig. 5-3-1
SCREW (A)
TILT ADJUST
Fig. 5-3-3 Locations of ACE Head Adjustment Screws
AUDIO HEAD
CONTROL HEAD
Fig. 5-3-4 ACE Head Height Adjustment
and
Fig. 5-3-2)
SCREW (C)
HEIGHT ADJUST
SCREW (D)
X-VALUE LOCKING
0 ~ 0.25 mm
5 - 5

Advertisement

Table of Contents
loading

Table of Contents