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DTC-to(xlEs I
+l-t,I..
DBG AdJttstnstt
AdJustnent
1. Connect CH-l
of en æcllloseoPe to Pin 1
(RF) of CNT52 and CH-2 of an æcilloscoPe
to pin 5 (DPG) of CNT56.
2. Seteet tap Pattern 8 and make a solder
bridge to cheek the original delay value of a
PG pulse.
(Ttre detay time for one DPG SW
code is about 100psec.)
3. Turn on the power switeh, insert alignment
tape TY-?251, and gut the set into the TEST
mode.
4. Press the AMS button, then press the PLAY
( ) ) button.
5. Seleet the tap Pattern and adjust so that it
satisfies the speeified value (for approximate
adjustment).
6. Put the set into the PLAY ( ) ) mode and
finely
adjust RV50f
so
that
the
signal
waveform on the oscilloseope is 650 f
15
usec.
Notes:
. When the drum related block is replacedt
remove the former solder bridges from the
DPG tap Pattern on the MD servo board.
. Press the AMS button before the PLAY
button is pressed so that the ATF servo
system maY be ProPerlY loeked.
Aûjustment Point
MD servo board (eomponent slde)
(Reference)
OPG
Tap pattern
I
2
4
E
at
ru
8
(,
B
(t)
H
Ê
I
o
2
o
3
o o
a
o
5
o
o
6
o o
7
o o o
t
o
9
o
o
A
o
o
B
o o
o
c
o o
0
o
o o
E
o o o
F
o o o o
-26-
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