Sony SLV-E170EE - X-Value Adjustment Eee

4-1-5. ACE HEAD ASSEMBLY ADJUSTMENT
(PRECISION ADJUSTMENT)
Mode Playback
Signal Alignment tape (1kHz track)
Measuring instrument | Oscilloscope
Measuring point i i
Audio output terminal
Adjustment locations | Azimuth adjuster screw,
Height adjuster nut, Tilt adjuster screw
[Adjustment Method]
1) Adjust the tilt adjuster screw in the FWD or REV mode so
that the lower flange of guide No. 7 does not curl up or rise.
2) Altemately adjust the azimuth adjuster screw, the height
adjuster nut, and the tilt adjuster screw to maintain even
audio output at maximum with minimum deviation.
ir:
t . =e
A: Maximum BB’: Minimum
Tilt adjuster screw
Height adjuster nut
X-value
adjuster screw
<a Azimuth adjuster screw
Tracking:
Is the RF output
obtained at maximum when
the tracking is at the
center poston
Is the
maximum RF
output above or below the
center positon
Set the tracking to the center
Turn the X-value screw clockwise.
4-1-6. X-VALUE ADJUSTMENT
Purpose: To obtain compatibility with other VTR
Precaution: Be sure to perform the preset tracking adjustment
before perform this adjustment. (Refer to the
Service Guide.)
Tum off the auto tracking and set the VTR for
manual tracking mode.
Playback
Alignment tape
Measuring instrument | Oscilloscope
CH-1: Connector PB RF pin for RF PC
board check.
CH-2: Connector RF SW P pin for RF
PC board check.
Measuring point
Adjustment locations | X-value adjuster screw
[Adjustment Method]
e Adjustment by Hi-Fi alignment tape (NTSC only)
When the tracking is set at the center position (by pressing
the (V] and [A] keys simultaneously), adjust the RF output to
maximum.
X-value is normal
(Aldirection
[direction
Adjust the tracking to the center
position.
Turn the X-value screw
counter-clockwise.
RF output |
level ‘
RF output I nN W
Starts droppin Starts droppi
pe Maximum RF output Ren
Fig. 4-7
=35—