Tape Path Adjustment - Sony DCR-TRV140 Service Manual

DCR-TRV140/TRV140E/TRV140M
2-4-2.

Tape Path Adjustment

1) Playback the SW/OL standard tape. (WR5-2D)
2) Turn the tape guide No.3 and No.6 alternately until the wave-
form becomes flat. (Fig. 5-2-5)
Note: Zenith adjustment screws for the TG3 and TG6 do not
need to be adjusted.
[Entrance side adjustment]
3) Turn the No.3 guide slowly in the clockwise direction until
the waveform amplitude at the entrance side begins to become
small. (Fig. 5-2-6 (A))
Confirm the rotation angle (A) of the No.3 guide.
4) Turn the No.3 guide slowly in the counterclockwise direction
until the waveform becomes flat. (Fig. 5-2-5)
5) Turn the No.3 guide slowly in the counterclockwise direction
until the waveform amplitude at the entrance side begins to
become small. (Fig. 5-2-6 (B))
Confirm the rotation angle (B) of the No.3 guide.
6) Turn the No.3 guide slowly in the clockwise direction and set
up in the angle (C) in the middle of the rotation angle (A) and
the rotation angle (B). (Fig. 5-2-4)
[Exit side adjustment]
7) Turn the No.6 guide slowly in the clockwise direction until
the waveform amplitude at the exit side begins to become small.
(Fig. 5-2-7 (A))
Confirm the rotation angle (A) of the No.6 guide.
8) Turn the No.6 guide slowly in the counterclockwise direction
until the waveform becomes flat. (Fig. 5-2-5)
9) Turn the No.6 guide slowly in the counterclockwise direction
until the waveform amplitude at the exit side begins to be-
come small. (Fig. 5-2-7 (B))
Confirm the rotation angle (B) of the No.6 guide.
10) Turn the No.3 guide slowly in the clockwise direction and set
up in the angle (C) in the middle of the rotation angle (A) and
the rotation angle (B). (Fig. 5-2-4)
Guide zenith adjustment screw
B
No.3 guide
or
No.6 guide
No.6 guide
(TG6)
No.3 guide
(TG3)
Fig. 5-2-3
C
A
Fig. 5-2-4
Entrance side amplitude
Entrance side amplitude
5-32
Fig. 5-2-5
Fig. 5-2-6 (A)
Fig. 5-2-6 (B)
Exit side amplitude
Fig. 5-2-7 (A)
Exit side amplitude
Fig. 5-2-7 (B)