18
29WF200
29WF500
18-1
18-2
No
Yes
Yes
Yes
No
Turn on colour control. Does
colour appear?
TROUBLE SHOOTING FLOWCHART (Continued)
NO SPECIFIC COLOUR
C
Is only RF signal's colour abnormal?
Set colour
control.
Turn on colour system forced
switch. Does colour appear?
Fix cotrol to
coloured
system.
Check Q1900
and their
peripherals.
Check D621
and its
peripherals.
Check TU51, Q405,
IC1900 and their
peripherals.
Yes
Yes
Yes
No
No
Is chroma input level of IC201
pin (43) proper?
Are signal waveforms at
TP47R and TP47B proper?
Is SCP signal waveform at pin (30) of
IC201 proper?
No
NO COLOUR
Check IC850.
Check IC201 and
their peripherals.
No
PAL, SECAM,
NTSC4.43:
Check X800, pin
(12) of IC201 and
their peripherals.
SET Sub-
colour.
Check IC201
and its
peripherals.
TROUBLE SHOOTING FLOWCHART (Continued)
C
COLOUR PRODUCED
Colour in B/W mode.
Colour control circuit detective.
Colour saturation control does not
work.
Fix control to coloured system.
Turn colour control to minimum.
Does colour disappear?
Turn up and down colour control.
Does colour gain go up and
down?
Can the sub-colour be readjusted
in service mode?
Turn on colour system forced
switch. Does colour appear?
APG circuit:
Check IC201
and its
peripherals.
Yes
Yes
White
balance:
Check RGB
output circuit
of IC201.
Check IC201.
No
Yes
No
Check D621 and its
peripherals.
PAL, SECAM, NTSC4.43:
Check X800 pin (12) of IC201 and
their peripherals.
No
No
Is chroma input level pin (43) of
IC201 proper?
Ref. value: 100 ~ 500mVp-p.
Yes
Fix control to
coloured system.
No
Is SCP signal waveform at pin
(30) of IC201 proper?
Are signal waveforms at TP47B and TP47R
proper?
Yes
Yes
Check pin (45) of
IC1900, IC1402, and
their peripherals.
No
No
Yes
Check IC201.
Содержание 29WF200
Страница 19: ...19 29WF200 29WF500 SOLID STATE DEVICE BASE DIAGRAM TOP VIEW SIDE VIEW ...
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Страница 22: ...22 29WF200 29WF500 MODEL 29WF200 CHASSIS LAYOUT ...
Страница 23: ...23 29WF200 29WF500 MODEL 29WF500 CHASSIS LAYOUT ...
Страница 24: ...24 29WF200 29WF500 BLOCK DIAGRAM 29WF200 ...
Страница 25: ...25 29WF200 29WF500 BLOCK DIAGRAM 29WF500 ...
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Страница 36: ...36 29WF200 29WF500 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 AV COMB UNIT 29WF200 ...
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Страница 40: ...40 29WF200 29WF500 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 S CONTROL UNIT 29WF200 ...
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Страница 42: ...42 29WF200 29WF500 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 S CONTROL UNIT 29WF500 ...
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Страница 44: ...44 29WF200 29WF500 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 FRONT UNIT 29WF200 ...
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Страница 52: ...52 29WF200 29WF500 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 PWB B CRT UNIT ...
Страница 55: ...55 29WF200 29WF500 10 11 12 13 14 15 16 17 18 19 I C4 3 0 1 ...
Страница 67: ...Ref No Part No Description Code Ref No Part No Description Code 67 29WF200 29WF500 PACKING OF THE SET ...