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VL-RDl U
2. HSWP adjustment
[Procedure]
1) Play back the alignment tape in the video mode.
2) Press the "CONTINUE" and "HSWP ADJ" keys on the adjustment remote control in this
order.
-+ This executes the HSWP adjustment.
When the adjustment
is successful,
the blue LCD lights up and the cassette
is
automatically
ejected. If not properly adjusted, the red LCD lights up.
3. DATA setting
Set the data adress 150 from adress 40.
ADJUSTING THE ELECTROMAGNETIC CONVERSION
CIRCUIT SYSTEM
Note:
During the adjustment of the electromagnetic
conversion circuit system, keep R3404 out
of operation.
1. PLL VCO adjustment
[Procedure]
1)Playback the alignment tape (or a self-recorded tape).
2)Calt the adjustment mode (V-ADJ).
3)Set the address to "2C", and call the data.
4) Using the FF key, vary the data that has been called until the playback image screen
changes to the blue back screen. Then use the REW key to vary the data backward until
the data point is found where the screen starts to switch from the blue back to the
playback image. At this time, take note of the data obtained at this point.
5) As in the above step 4), vary the data that has been called - this time using the REW
key - until the playback image screen changes to the blue back screen. Then use the
FF key to vary the data backward until the data point is found where the screen starts
to switch from the blue back to the playback image. At this time, take note of the data
obtained at the point.
Playback screen
I
Position @ at which note
is made of the datum
I"
1
Position @I at which note
is made of the datum
6) Calculate the data taken note of at the points @ and @I to find the center of these data,
and shift to and determine the central data by using the FF or REW key.
Example:
If the data taken note of at points @ and @I are 5A and 65, respectively:
5A. 58.
5C. 5D. 5E. 5F. 60. 61. 62. 63. 64. 65
The central data is set to "5F".
1 O-8
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
1
I
I
I
I
I
I
I
I
I
I
1)
2)
3)
During
mechanism
re-
placement
During E2PROM replace-
ment (IC302
inside
the
Head
amplifier
circuit
board)
During
mechanism
re-
placement
During E2PROM replace-
ment (IC302
inside
the
Head
amplifier
circuit
board)
During Circuit board (Main)
replacement
During E2PROM replace-
ment
During POWER2 PWB re-
placement
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