Circuits to be checked:
l IC1801 and its Adjacent
Circuit
e
R.
G.
IT.
Output Circuit
NO SPECIFIC COLOUR (SECAM)
J
FLOW CHART NO. 1-9
Specific colours are not produced in
colour broadcast receptron.
IS there a chroma signal at pin (20)
of IC1801
(IX0969CEN
1)
and at
No
No
-
When change channel No
does colour appear?
YES
1
YES
I
I
YES
When colour control minimum,
colour disappears.
1
No
t
t
colour shading.
Colour appears but
abnormal colour.
YES
j
I
I
I
1
YES
1
No
I
r-------f
-------,
Norma,
t
’
IC1801,C1829,
;
r
Check Pins
(22).
(23),
(27)
of
ICI801
bias.
I
Cl901
l-----
----
______:
,r
Check
Q1401,Q1803,Q1804,
Q1806
i
r------------1
I
Re-adjust the
i
1
white balance. I
L------------J
Abnormal
1
,c1801
;
Check
SE”M
(H)
Signal
:
______:
Line. (
H
level at pm (9)
of connector
f
AG
]
in
SECAM Mode.)
Circuits to be checked:
l
ICI801
and its Adjacent Circuit
l
R.
G.
8. Output Circuit
FLOW CHART NO.
Z-10
NO SPECIFIC COLOUR (NTSC)
,
4
Specific colours are not produced in
colour
NTSC
3.58
receptron.
>
*
Is there a
chroma
signal
Check the VCR:
at pin
(20)
of
ICI801
No
TROUBLE SHOOTING
(iX0969CENl)
and at pin
-
‘RECORD IS IN
(8) of connector Y2 or BLACK AND WHITE
pin (3) of AD?
(EE
colour
mode)
I
Yes
,--------l
-
-
-
-
-
-
-
-
-
_
j
ICI801
(iX0969CENl)
I
;
X1801 (NTSC
3.58MHr)
;
;
Q1801-4,6,
1401
I
L__________________4
r--------1--------,
1
Readjust the white
1
I
balance.
I
I
I
Check
Q851
and its
I
I
CheckQ852andits
i
I
adjacent circuits.
I
I
I
i
adjacent circuits
I
L-________-____--_a
c_______________--2
r
-
-
-
-
-
-
-
-
--------7
I
Check
Q853
and its
I
1
adjacent circuits.
I
I
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