Sony TRINITRON KV-13VM30 Service Manual page 78

KV-20/13VM30/31
RM-Y138/W
10-4. CHECKING TORQUE
Purpose: It is necessary to check the tension, torque and compression force at the tape take-up section and
moving section to make the tape run smoothly and satisfy the basic performance of the VCR Check
these if the tape does not run smoothly or the tape speed is abnormal
@ Torque Gauge @ Set the VCR to each operation mode without inserting
@ Torque Gauge Adaptor a cassette
@ Cassette Torque Meter (See '2 Preparation for Adjustment')
SRK-VHT-063 : Play, Cue
SRK-VHT-303 : Review
Main brake torque, Supply and take-up reels 600g cm or more
Fast forward torque Take-up reel
Checking Method
The values are measured by using a torque gauge and tor-
que gauge adaptor with the torque gauge fixed
TORQUE GAUGE
Note: This value is measured when the VCR is shifted in
the unloading direction from the fast forward or re- TORQUE GAUGE
wind mode and quick braking is applied to both ADAPTOR
Reel Tables
t
a REEL TABLE
Fig. C-4