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Measuring point 89:
QI/
7.2.4.1
Check of subcarrier
.
Player switched off.
Connect
frequency
counter
to testpoint
83 ,(
Pin
6
IC
7609
) and
turn
on the player.
The frequency
on
testpoint
83 should be;
PAL=
4 433
618
Hz.±
50 Hz.
NTSC
=
3 579 545 Hz.
±
7
Hz.
The
amplitude on
testpoint
83 should be in between;
400 mV
and
1000 mVpp
If
for
PAL
the
frequency
of
this
signal
deviates,
perform
alignment of
trimmer
2650.
7.2.4.2 Check of standard
control signal
SW
The
control signal SW on testpoint
78,
should
be
low
(
0
V
)
for
PA
L
and
high
(5
V) for
NTSC.
7.2.4.3 Check of RGB input signals
On
the
given
photo
below
the
signals are given
for
R
-
G -
B.
On Testpoints
86,
87 and 88.
....
'
.u..J
Ll"
I
R
!!:i
.
-
""
-I
..
....
....
...
.
.
,
..
"'
G
I~
[
:
I
.
.
B
"
·
L i.ii
.I
.
.
r=::
...
.
;;;;;;;;
..
..
=
....
' '
'!
•·
I.
-
c::
==
-=
-
·
~
'
Check
of Output
signals for
CVBS
-
Y
/
C
;(
CVBS
signals
Testpoint 89
Video signal
1000
mVpp
White
level
710
mVpp
sync
290
mVpp
Burst
290
mVpp
Y IC Sign.
Testpoint
91 /92
Video signal
1000 mV
pp
White level
710
mVpp
sync
290
mVpp
Chroma
300
mVpp
PCS
67 666
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