LG RD-JT51, Service Manual

Page: 57 / 132

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3. Main Block Trouble Shooting Guide
S y s te m n o
w o r k
a . P W 1 6 4 B b a d s o ld ie r in g
b . F la s h w ith o u t s o ftw a r e in s id e .
c . R e s e t IC fu n c tio n a b n o rm a l
d . P W 1 6 4 B n o w o r k .
a . C h e c k 3 .3 V o r 2 .5 V
b . C h e c k M C L K a n d D C L K
N o d a ta s ig n a l
o u tp u t to D M D
B D
T h e im a g e d is p la y "N o
S ig n a l" w h e n th e in p u t is
P C
T h e g h o s t Im a g e
d is p la y o u tp u t o f V id e o
in p u t
C o u ld n 't d o w n lo a d n e w
s o ftw a r e to M ia n B D
R e m o te m o u s e
d o n 't w o r k
K e y p a d
w o rk in g
a b n o r m a lly
a . P W 1 6 4 B b a d s o ld ie r in g c a u s in g n o w o r k .
b . C h e c k 3 .3 V o r 2 .5 V .
c . C h e c k IC S 5 0 1 if th e re w a s M C L K a n d D C L K o u tp u t
to P W 1 6 4 B .
Y e s
a .C h e c k th e m o u s e o f P C is s till w o rk in g n o rm a lly
b .C h e c k th e m o u s e d riv e r o f P C is P S 2 c o m p a tib le
m o u s e
c .R e p la c e IR B u ffe r
a . R e p la c e S P E 2 3 2 E
b . P W 1 6 4 B
a . V P X 3 2 2 6 b a d s o ld ie rin g
b . P W 1 6 4 B b a d s o ld ie r in g
c . M a in S y s te m b a d c o n n e c tio n
a . C h e c k th e v o lta g e o f A V D D , P V D D , V D D
b . if v o lta g e a b o v e a re O K , th e n c h e c k V S Y N C a n d
H S Y N C
if th e r e w e r e th e s e tw o s ig n a l o r n o t.
c . R e p la c e A D 9 8 8 8
Y e s
Y e s
Y e s
Y e s
Y e s
C h e c k 7 4 2 4 4
C h e c k th e re s is te rs b e tw e e n IR a n d P W 1 6 4 B
a .C h e c k s o ld ie rin g c o n d itio n
b .P W 1 6 4 B b a d s o ld ie r in g
C h e c k 7 4 3 7 3
L a m p L it s ig n a l
a b n o r m a l
IR d o e s n 't
w o r k .
G r a y b a r a b n o rm a l o r
im a g e c o n to u r( P C in p u t)
Y e s
Y e s
Y e s
Y e s
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