Adjustment Procedure; Crt Replacement - Panasonic WV-BM90 Service Manual

ADJUSTMENT PROCEDURE

1 TEST EQUIPMENT REQUIRED
The following equipment is required for adjustment of WV-
Oscilloscope
0
Digital Voltmeter
0
Completely aligned Black and Whrte Camera WV-EL90
0
Frequency Counter
0
Resolution Chart (YWV1400RB99)
0
N A T I O N A L
R E S O L U T I O N
Fig. l-1
2 D I S A S S E M B L Y P R O C E D U R E F O R
ADJUSTMENT
Remove six screws holding the cover and remove the
cover by pulling it backward.
Remove six screws
Fig. 2-1
C H A R T

3 CRT REPLACEMENT

Remove the cover as previously described in section 2.
l
Remove two screws holding the front chassis and slide
back the chassis wrth PCB unit.
l
Disconnect the anode cap.
Caution M a k e s u r e t h a t t h e a n o d e v o l t a g e i s
completely discharged by directly connected
between anode terminal and chassis.
.
Remove two screws holding the Control board assembly
and open the direction of the arrow.
Fig. 3-2
.
Disconnect the CRT socket by pulling it backward.
.
L o o s e n t h e s c r e w h o l d i n g d e f l e c t i o n y o k e a n d
convergence magnets assy and remove the yoke and
magnets assembly by pulling them backward.
Deflection holding screw
Fig. 3-3
CRT Sock