LG Electronics RD-JT41 1. Final Assembly Trouble Shooting Guide

LG RD-JT40/41 Service Manual

1. Final Assembly Trouble Shooting Guide

S y s te m T ro u b le S h o o tin g F lo w C h a r

B a c k - L IG H T O K ?

Y e s

P o w e r O N O K ? (L A M P O N ? )

Y e s

N o S ig n a l?

N o

A u to P o w e r O ff?

N o

V id e o N G ?

N o

A u d io N G ?

N o

IR R e m o te C o n tro l

N G ?

N o

			S T E P :
		N o	1 .C h e c k		p o w e r c o re
			2	.C h e c k	p o w e r b o a rd	a n d	w ire
			1 .C h e c k		la m p d o o r.
			2	.C h e c k	th e rm a l s w itc h a n d w ire
			3	.C h e c k	1 2 V F a n a n d	w ire
			4	.C h e c k	p o w e r b o a rd	a n d w ire
			5 .C h e c k		c o lo r w h e e l F P C
		N o	6 .C h e c k		s c re w s o n c o lo r w h e e l
			7 .C h e c k		c o lo r w h e e l m o to r
			8	.C h e c k	D M D d riv e r b o a rd		a n d		1 2 0	p in s c o n n e c to r
			9	.C h e c k	T ra n s la tio n b o a rd			a n d	w ire		a n d 5 0 p in s c o n n e c to r
			1 0 . C h e c k M a in b o a rd
			1	1 . C h e c k A V B o x c o n n e c to r (if w ith						th is o p tio n )
			1 .C h e c k		in p u t c a b le
	Y e s
			2 .C h e c k		O S D s o u rc e s e t u p
			1 .C h e c k		O S D la m p h o u rs
			2 .C h e c k		O S D A u to O ff s e tu p v a lu e
			3 .C h e c k		la m p d o o r
	Y e s
			4 .C h e c k		1 2 V fa n
			5 .C h e c k		th e rm a l s ta tu s
			6	.C h e c k	A V B o x c o n n e c to r(if w ith th is o p tio n )
			1 .C h e c k		A V B o x
Y e s
			2 .C h e c k		V id e o c a b le
			1 .C h e c k		A V B o x
	Y e s
			2 .C h e c k		a u d io c a b le
			1	.C h e c k	R e m o te m o d u le b a tte ry
			2 .C h e c k		R e m o te m o d u le
	Y e s
			3	.C h e c k	T ra n s la tio n b o a rd
			4 .C h e c k		M a in b o a rd

P ix e l F a il?

N o

Im a g e N G ? (R a in d ro p s )

N o

Y e s

Y e s

1 .C h e c k D M D		c h ip
2 .C h e c k D M D		b o a rd
1 .C h e c k	c o lo r w h e e l a n d S e n s o r b o a rd
2 .C h e c k	D M D	c h ip a n d h o ld e r

3	.C h e c k	D M D	c o n d u c tiv e	e la s to m e rs a s s e m b lin g
4	.C le a n	D M D	c o n d u c tiv e	e la s to m e rs

A

27