Tape Guide Posts And Guide Screws; Pi N Ch Rol Ler - TANDBERG 3400 X Service Manual

4.3 TA P E G UIDE P O S T S A N D G UT DE
SCREWS
4.4 P IN CH R OL L E R
Fig. 4.3. Adjustable tape guide posts.
a
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Thread a tape into the tape path. pull the joustick
slowly down into the ) position and tishten the
tape by rotating the left reel slowly cloikwise.
Check that the tape does not come into contact
with the edges of the tape guide screws. If necessarv,
adjust the guide screws shown in Figure 4.3.
When the machine is in the playback mode and
tape is passing the heads, the tape may touch the
top edges of the guide posts and guide screws, but
u n der n o c irc um stanc es s h ou ld i t tw is t o r di sto rt.
The two adjustments possible on the pinch roller
are parallelism and azimuth.
Parallelism.
Push the pressure roller arm in and check that the
pinch roller is parallel with the capstan. To adjust,
loosen screw A and adjust screw B (Figure 4.4)
until the pinch roller and capstan are parallel.
Tighten up screw A.
Azimuth.
Put a tape into the tape path and move the joystick
to ) . Check that the tape does not distort when
it has passed the pinch rbller. To adjust, loosen
screw A and move bracket C (Figure 4.4) until the
tape runs properly. Tighten up screw A.
Fig. 4.4. Adjusting the pinch roller.
A