No. 51952
AV28CT1EKS / AV28CT1EKB
AV28CT1EPS / AV28CT1EPB
AV28CT1EIS
25
[Only AV28CT1EPS / AV28CT1EPB]
Item
Measuring
instrument
Test point
Ad justment part
Description
[Method of adjustment without measuring instrument]
Ad justment
of BLACK
OFFSET
(SECAM)
Ⅰ
Ⅰ
Ⅰ
Ⅰ
Remote
control unit
7. BL ACK
OFFSET
(R-Y)
***
(B-Y)
***
1. Receive a SECAM broadc ast.
2. Select 2.V/C from SERVICE MENU.
3. Select 7. BLACK OFFSET with the FUNCTION UP/DOWN
key.
4. Set the initial setting value for BLACK OFFSET (R-Y) and (B-
Y) with
4
and
7
or
6
and
9
keys of the remote c ontrol.
5. If the picture is not the best with the initial setting value, mak e
fine adjustment until you get the best picture.
6. Press the MENU key and memorize the setting value.
[Method of adjustment using measuring instrument]
Ad justment
of BLACK
OFFSET
(SECAM)
Ⅱ
Ⅱ
Ⅱ
Ⅱ
Signal
generator
Oscilloscope
Remote
control unit
35 PIN (R-Y)
36 PIN (B-Y)
IC-301 ON
MAIN PWB
7. BL ACK
OFFSET
(R-Y)
***
(B-Y)
***
1. Receive a SECAM COLOUR bar signal (full field colour bar
75% white).
2. Select 2.V/C from SERVICE MENU.
3. Select 7.BLACK OFFSET with the FUNCTION UP/DOWN
key.
4. Connect the oscillosc ope between
35
pin of IC-301 and TP-E
(
#
).
5. By
using
4
and
7
keys of the remote control, adjust the
BLACK OFFSET (R-Y) so that it becomes the waveform
changes from (a) to (b) shown in the figure.
6. Connect the osc illosc ope between
36
pin of IC-301 and TP-E.
7. By
using
6
and
9
keys of the remote control, adjust the
BLACK OFFSET (B-Y) so that it becomes the waveform
changes from (c) to (d) shown in the figure.
8. If the picture is not the best with the adjusted picture, make
fine adjustment until you get the best picture.
9. Press the MENU key and memoriz e the s etting value.
[R-Y]
(a)
(b)
[B-Y]
(c)
(d)
REMOTE CONTROL UNIT
1
2
3
4
5
7
8
6
9
BLACK OFFSET ON
▼
▲
▼
▲
R-Y
R-Y
B-Y
B-Y
BLACK OFFSET
OFF
