46
LC-28HM2
AN-28SP2
TROUBLE SHOOTING TABLE
(Continued)
No color
Ye
s
No
No
No
No
No
No
No
No
No
No color production of video line and component
line signals
Ye
s
Is 3.58MHz supplied to
pin (10) of IC801?
Check X801 and its
peripherals.
Ye
s
Are there normal
outputs at pins (3) and
(6) of IC406?
Check the peripherals
of IC7001 and IC7002.
Ye
s
Ye
s
Ye
s
Is there normal input at
pin (13) of IC801?
Check the peripherals
of IC801 and IC7003.
No
Are there normal outputs at
pins (5) and (6) of IC801?
Check input and output of IC406.
Check the peripherals
of IC801.
Check the peripherals.
Ye
s
Are there normal inputs
at pins (51) and (52),
and normal outputs at
pins (42), (42) and (43)
of IC801?
Check IC801 and its
peripherals.
Are there normal inputs
at pins (1), (5) and (9),
and normal outputs at
pins (3), (7) and (11) of
P803?
Check RGB filter unit
unit (KA266N).
No color production of video line signals
(Commonly supplied between IC401 and IC801.)
Is there normal output at pin (83) of IC7001?
Ye
s
Ye
s
Ye
s
Is there normal output
at pin (53) of IC401?
Check IC401 and the
peripherals of IC802.
Check the line from rear terminal unit in
the case of V1(S), and the line from front
terminal board in the case of V2(S).
No color production only
with video S signals
Is there normal output
at pin (58) of IC401?
Is there normal input at
pin (5) or (12) of IC401?
Ye
s
No color production of component line signals
Ye
s
Are there normal inputs
at pins (4), (7) and (9)
of IC416 and IC417?
Check the related part
of the rear terminal
unit.
Ye
s
Is there normal output
at pin (8) of IC416 and
IC417?
Check IC416, IC417
and the peripherals of
IC404 and IC405.
Ye
s
Video signals are properly
supplied to SC503, but no
color production.
Check if "Monochrome"
setting is in effect.
The term "video composite" denotes video 1, video 2 and video 3 signals.
The term "video S" denotes video 1 (S video input) and video 2 (S video input) signals.
The term "video line" denotes the aggregate of "video composite" and "video S" signals.
The term "component line" denotes component 1 and component 2 signals.
Summary of Contents for LC-28HM2
Page 49: ...49 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT DISPLAY ...
Page 50: ...50 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT AVC SYSTEM ...
Page 70: ...76 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Ë CONTROL UNIT DISPLAY ...
Page 71: ...77 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Ë R C RECEIVER UNIT DISPLAY ...
Page 74: ...82 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Ë LAMP 1 UNIT DISPLAY ...
Page 75: ...83 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Ë LAMP 2 UNIT DISPLAY ...
Page 76: ...84 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Ë LAMP GND UNIT DISPLAY ...
Page 90: ...108 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Power Unit Display Component Side ...
Page 92: ...110 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Main Unit AVC System A Side ...
Page 93: ...111 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Main Unit AVC System B Side ...
