JVC AV-56WP30, Service Manual

Page: 13 / 122

No. 52007
AV-56WP30
13
!
PARTITION
" Remove the REAR PANEL.
1. Pull out the PART ITION back ward.
! MAIN UNIT
"
Remove the SPEAKER GRILLE.
"
Remove the connector BH , X , R , BG on the
FRONT CONTROL PWB.
" Remove the REAR PANEL.
1. Remove 4 sc rews O
!
from front s ide.
2. Pull out the MAIN UNIT rear s ide.
NOTE :
" Except for confirmation of projection of images on the screen
and audio output through the s peakers, the removed main unit
is still workable in the same state as if it is still built in the TV
set. Therefore, the main unit can be removed, if nec essary, for
board diagnosis, electric testing, etc. apart from confirmation
of screen images and audio output.
" When wire clamps are removed during work, use care to
restore them precisely to their original positions. Performance
can be affected if these are not returned to the original
positions.
" Becaus e of the large size, at least two pers ons are
recommended for removal and reas semble.
" When c arrying the main unit, us e care not to drop, shock or
shake it.
" Do not stain or damage the lens of the projection unit.
"
Do not look through the projection unit.
#
CHECKING THE P.W. BOARD
When checking the MAIN PWB, POWER & DEF PWB, etc., raise
the MAIN UNIT with the HV
DIVIDER side down for the sake of
convenienc e. You c an checking the MAIN PWB.
!
LINE FILTER PWB
"
Remove the REAR PANEL.
" Remove the AV JACK BOARD.
1. Disc onnect the connector B , F on the LINE FILTER PWB.
2. Remove 3 screws P attaching the LINE FILTER BRACKET and
earth wire.
3. Remove 2 sc rews Q attaching LINE FILTER PWB.
4. Remove the LINE FILT ER PWB.
! MAIN CHASSIS
" Remove the REAR PANEL.
"
Remove the AV JACK BOARD.
" Remove the LINE FILT ER BRACKET.
1. Remove 2 sc rews R both side of the MAIN CHASSIS.
2. Remove 1 sc rews R’ attaching the earth wire.
3. Pull out the MAIN CHASSIS for back side.
NOTE :
"
If nec essary, remove the anode wires, connectors,
respectively.
MAIN UNIT
O
MAIN CHASSIS
R
R
R’
EARTH WIRE
LINE FILTER BRACKET
P
LINE FILTER BRACKET
LINE FILTER PWB
B
F
EARTH WIRE
EARTH WIRE
P
Q