NEC JC-1531 VMA-2, Service Manual

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2 . M a i n A d j u s t m e n t
Service
adjustment
*
Set the user switch positions as follows unless otherwise instructed.
CONTRAST VR : F u l l y c l o c k w i s e
BRIGHTNESS VR: Adjust to the point where the back raster just disappears
COLOR SW :
F a r o n y o u r l e f t ( p o s i t i o n “N”)
SYNC SW : L e f t s i d e ( o f f )
(LED)
SW105 SW1 07
D118 SW102
q q q
SW111 SW112
LEVEL MEMORY
SW108
MANUAL COLOR SYNC
ID RECALL SIZE POSITION DEGAUSS
Switch inside the front door
* The user level 1 LED indicators the level as follows
LEVEL 1 : T u r n o f f
LEVEL 2 : Turn on
LEVEL 3 :
Turn on and off
U n l e s s o t h e r w i s e instructed, set the user level to level 1.
* Changing the user level
To LEVEL 1 : Simultaneously press DEGALlSS(SW110) and V POS UP(SW107)
To LEVEL 2 : Simultaneously press DEGAUSS(SW110) and H POS RIGHT(SW103)
To LEVEL 3 : Simultaneously press DEGAUSS(SW110) and V POS DOWN(SW108)
* User switch functions
a) LEVEL 1 (POSITION,SIZE)
V SIZE UP v POSI U P
H POSI
L E F T
MEMORY H SIZE
RECALL D O W N
H S I Z E
UP
MANUAL
DEGAUSS
V SIZE DOWN V POS DOWN
b) LEVEL 2 (INTENSITY, SIDE
P I N
)
G INT DOWN
0
G INT UP
R INT
UP 0
B INT
UP
MEMORY R INT
RECALL DOWN
MANUAL
DEGAUSS
SIDE PlN(PIN)
SIDE PIN(BARREL)
c) LEVEL 3 (S
U
B - B R
I
G
H
T )
G SBBRT DOWN G SBBRT UP
R SBBRT
Up 0 B sBB;;
MEMORY R SBBRT
RECALL DOWN
0
MANUAL
DEGAUSS
NON NON
d) VR503: H S I Z E F u l l y c l o c k w i s e
*
Adjustment jig
Set all switches at “Open” position.
Connect TP-A and TP-B to Adjustment jig.
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