Sony SLV-286EE - ACE Head Height Adjustment; Tension Torque Check

4-1-3. ACE Head Height Adjustment (rough)
(Fig. 4-3)
Playback
Measuring Blank tape
instrument
/jig
Adjusted ACE head
locations
[Adjustment method]
1) Remove the FL ass’y, complete threading without insert-
ing a cassette tape, and place the set in the specified
mode (Section 1-3).
2) Set a blank tape and allow it to run, then adjust the
spacings from the upper and lower ACE heads to tape
edges so that the ratio of @: B=1: 1.5.
Audio head
Fig. 4-3
4-1-4, Tension Torque Check
Purpose: To check tension torque and application force
acting to the tape takeup and moving parts, which
is necessary to ensure that the tape path is smooth
and that the basic perfermance of the VTR is
satisfied.
If the tape path is not smooth and/or the tape
speed is not correct, this check should be perfor-
med.
Mode Each mode of operation with torque tape
inserted
Measuring NTSC VHT-063S torque tape
instrument PAL VHT-066S torque tape
/jig NTSC VHT-404S torque tape
PAL VHT-404S torque tape
Item Torque tape used VTR mode of Operation| Reel to be measured
NTSC VHT-063S
Playback torque PAL VHT-.066S Playback Takeup reel 100+30g*cm
: NTSC VHT-063S
Back tension torque PAL VHT-.066S Playback Supply reel 47.5+12.5g°cm
Measurement Value
NTSC VHT-404S
REV torque PAL VHT-404S REV Supply reel 165+ 25g*cm
? NTSC VHT-404S
CUE torque PAL VHT-404S Takeup reel 115+45g-cm
Note : Be sure to rotate each torque tape by the minimum of one turn, and read the value at the center portion between the
maximum and minimum deflections.