Sony BVW-55 Maintenance Manual page 357

3. PLAY mode check (At the beginning
portion of the tape)
(1) Put the unit into the PLAY mode.
(2) Check the tape running condition satisfies the
specification 1.
BVW-55 P2
[Drum entrance side]
Impedance roller
Tape should run
without contacting
Full-erase
the upper and lower
head
flanges
S4 S3
S tension regulator
[Drum exit side]
Tape runs in contact
with the upper flange
T1 T2
Tape runs in contact
Tape runs in contact
with the lead with the lower flange
Upper flange
Curl
Tape
Spec. 1: (PLAY mode at the beginning portion of the tape)
[Drum entrance side]
. S2 guide
Tape runs in contact with the upper flange.
. S3 guide (S tension regulator guide)
Tape runs without contacting the upper and lower flanges.
If the tape runs in contact with the upper or lower flange, tape curl is
acceptable within the range of less than 1/10 of the tape width.
. S4 guide
Tape should run without contacting the upper and lower flanges.
[Drum exit side]
. T2 guide
Tape runs in contact with the upper flange.
If tape curl occurs, tape curl is acceptable within the range of less than
1/10 of the tape width.
. T3 guide (T drawer guide)
Tape runs in contact with the lower flange.
. T4 and T5 guides
Tape runs without contacting the upper and lower flanges.
Even if the tape runs in contact with the upper or lower flange, tape curl
could not be acceptable.
. T6 guide (T tension regulator guide)
Tape runs without contacting the upper and lower flanges.
If tape runs in contact with the upper or lower flange, tape curl is
acceptable within the range of less than 1/10 of the tape width.
. T7 guide
Tape should run without contacting the upper and lower flanges.
Even if the tape runs without contacting this tape guide roller, it is
acceptable.
5-4. Tape Running Check and Adjustment
Tape cleaner
Tape runs in contact
CTL head
with the upper flange
S2
Drum
S1
Tape runs in contact
with the lead
Tape should run without
contacting the upper and
lower flanges
Impedance roller
Capstan
AT
T3 T4 T5
head
T tension regulator
Tape curl is acceptable within
the range of less than 1/10 of
the tape width
Lower flange
T6 T7
5-15