Sharp XG-NV4SU Service Manual

I
XG-NV4SU
SHARP
SERVICE MANUAL
SSSXSXd-NV4SU
PAUSECAM/NTSC SYSTEM
LCD PROJECTOR
L
IMAGE
QUALlTV
MODEL
XG-NV4SU
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
1
CONTENTS
Page
SPECIFICATIONS 2
0
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IMPORTANT SERVICE SAFETY NOTES . . . . . . . . . . 3
l
NOTE TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 4
l
OPERATION MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 .
REMOVING OF MAJOR PARTS . . . . . . . . . . . . . . . . . . . . . . 13
l
RESETTING THE TOTAL LAMP TIMER . . . . . . . . . . 18
l
THE OPTICAL UNIT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . 19
l
CONVERGENCE AND
FOCUS ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ELECTRICAL ADJUSTMENT
. . . . . . . . . . . . . . . . . . . . . . . . . . 25
ADJUSTING THE PC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . 30
TROUBLE SHOOTING TABLE . . . . . . . . . . . . . . . . . . . . . . . . 31
0
CHASSIS LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Page
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
OVERALL WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . 53
DESCRIPTION OF SCHEMATIC DIAGRAM . . . 55
WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
PRINTED WIRING BOARD ASSEMBLIES . . . . . . 99
PARTS LIST
n
ELECTRICAL PARTS . . . . . . . . . . . . . . . . . . . . . . ..*...... 111
n
Cabinet AND MECHANICAL PARTS . . . . . 136
n
Accessories PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
n
PACKING PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
PACKING OF THE SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
SHARP CORPORA'ION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.