JVC AV-65WP74/HA Service Manual page 13

2.5 SCREEN HANDLING CAUTIONS
2.5.1 SCREEN STORAGE
Store the SCREEN ASS'Y in a standing position in order to avoid deformation. If the screen is stored horizontally, there is risk of
deforming the screen face.
When necessary to place the SCREEN ASS'Y horizontally, position the screen side upwards and sure to place spacers between the
screen and resting site (floor or stand etc.) to prevent the screen from sagging.
2.5.2 SCREEN SURFACE
Since the screen surface is easily scratched or soiled, use ample care when handling.
DISASSEMBLY PROCEDURE
If the screen or screen panel need to
be replaced, remove the 24 screws A.
Leave the screen with protector fresnel
lens and double lenticular lens attached.
If cannot be disassembled further.
2.6 PROJECTION UNIT REPLACEMENT
2.6.1 ADJUSTMENT DURING REPLACEMENT
When replacing the three R, G and B projection units, first replace the R and B units and perform focus / screen / raster centering
adjustments
with reference to the G unit. Then replace the G unit and perform G focus / screen / convergence adjustment. Finally perform R & B .
Convergence adjustments. Use care to simultaneously removes all three-projection units.
2.6.2 DISASSEMBLY CAUTION
The projection units include locations that are not to be disassembled during service. When replacing projection unit parts,
disassemble to the state indicated in the figure below.
The figure indicates screws and wires that are not to be removed. Use care not to remove these.
Deflection yoke wires : to connector on POWER & DEF. PWB ASS'Y.
[R="RHV", G="GHV", B="BHV"]
Convergence yoke wires : to connector on CONVERGENCE PWB ASS'Y.
[R="R", G="G", B="B"]
Check that tape is applied to the CRT neck.
If absent, the deflection yoke can dislodge.
LENS ASS'Y
LENS ASS'Y SCREW ( x 4)
All manuals and user guides at all-guides.com
SCREEN
Do not remove screws
FRONT CABINET
SCREEN BRACKET
A( x 7)
A( x 5)
SENSOR
SCREEN BRACKET
A( x 7)
(LEFT)
PC MAGNET
PC MAGNET
TAPE
ANODE wires : to DIVIDER
DEF. / CONVER. YOKE
CRT ASS'Y (COUPLER ASS'Y)
Do not disassembly
(TOP)
SCREEN BRACKET
(RIGHT)
SENSOR
SENSOR
A( x 5)
SENSOR
SCREEN BRACKET
(BOTTOM)
R CRT SOCKET PWB ASS'Y
G CRT SOCKET PWB ASS'Y
B CRT SOCKET PWB ASS'Y
VM PWB (G only)
(No.52096)1-13
AV-65WP7