Sony HDCAM HDW-F900R Maintenance Manual page 414

Check Procedure
Set the CASSE. ID MUTE to ON using the VTR
maintenance menu, A40 : PATH MODE SEL.
(Refer to Section 11-3-7.)
1. Enter the REC state
(1) Turn on the main power.
(2) Insert the torque cassette (FWD back tension)
and press the REC button to enter the REC
state.
2. FWD back tension check
Check that the supply side meter reading of the
torque cassette (FWD back tension) satisfies the
specifications.
Specification: 0.0044 ± 0.0004 N.m (44 ± 4g f.cm)
If the specification is not satisfied, check whether
the value is larger or small than the specified
value and then go to step 3.
Adjustment Procedure
3. Enter the EJECT state
(1) Press the REC button to release the REC
state.
(2) Press the EJECT button and remove the
torque cassette (FWD back tension).
4. Back tension adjustment
Change the hook position to which the spring
(lock lever) (coil) (ST) of the S-tension regulator
assembly is engaged.
Adjustment point
. When the tension is larger than the specified
value, change the hook position in the direction
of [_] to which the spring (lock lever) (coil)
(ST) is engaged.
. When the tension is smaller than the specified
value, change the hook position in the direction
of [+] to which the spring (lock lever) (coil)
(ST) is engaged.
5. FWD back tension check after
adjustment
Perform steps 1 and 2 of the check procedure and
confirm that the specification is satisfied.
8-8
+
Spring (lock lever)
(coil) (ST)
S-tension regulator assembly
Supply side meter
Cassette compartment
assembly
Torque Cassette (FWD back tension)
Specifications : 0.0044 ±0.0004 N.m
(44 ±4 gf.cm)
_
HDW-F900R/V1 (E)