40
LC-28HM2
AN-28SP2
TROUBLE SHOOTING TABLE
No picture
Blue screen
Chec
k A
VC system oper
ation.
Ye
s
Ye
s
No
Whole screen in b
lac
k
Ye
s
Ye
s
Chec
k A
VC system oper
ation.
No
Is there nor
mal output at pins
(119), (120), (137), (138), (181)
and (192) of IC4302?
Is there nor
mal output at pins (44),
(46), (47) and (48) of IC4001?
Chec
k R4018, R4019, R4020 and
R4021 and their per
ipher
al circuits
.
Chec
k IC4303 and its per
ipher
al
circuits
.
Chec
k IC4001 and its per
ipher
al
circuits
.
Ye
s
Fluorescent lamp is not ON.
No
Is there nor
mal output at pin (113)
of IC4302?
Chec
k IC4303 and its per
ipher
al
circuits
.
Ye
s
No
Is there nor
mal output at pin (15) of
P2001?
Chec
k Q2014 and its per
ipher
al
circuits
.
Chec
k A
C/DC po
w
er units
.
No sound
No
Ye
s
No
Ye
s
No
No
Ye
s
Ye
s
Is there nor
mal output at R39
of AMP po
w
er unit?
Is there nor
mal audio output at
pins (1) and (3) of P1302?
Chec
k AMP and po
w
er units
and per
ipher
als
.
Is the v
oltage 0V at R2041?
Chec
k IC1304 and its
per
ipher
al circuits
.
Is the v
oltage 0V at
R2038?
Chec
k IC2004 and its
per
ipher
al circuits
.
Chec
k IC1308 and its
per
ipher
al circuits
.
Replace BOSE speak
er
.
Содержание LC-28HM2
Страница 49: ...49 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT DISPLAY ...
Страница 50: ...50 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT AVC SYSTEM ...
Страница 70: ...76 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Ë CONTROL UNIT DISPLAY ...
Страница 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 ...
Страница 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 ...
Страница 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 ...
Страница 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 ...
Страница 77: ...85 LC 28HM2 AN 28SP2 6 5 4 3 2 1 A B C D E F G H Ë FRONT TERMINAL UNIT AVC SYSTEM DUNTKA354NJ01 ...
Страница 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 ...
Страница 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 ...
Страница 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 ...