Toshiba 34AX9UE, Service Manual

Page: 15 / 109

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GENERAL ADJUSTMENTS
SPECIFIC INFORMATIONS
Adjusting parts Adjusting parts
Horizontal ampli-
tude adjustment
Adjustment on the
corrected number
of pin distortion
Adjustment on the
corrected number
of trapezoidal dis-
tortion
H. CENT
HEIGHT
VERT.POSITION
V901
Input/output points
Visual adjustment by
patterns (Bus control)
Visual adjustment by
patterns (Bus control)
Visual adjustment by
patterns (Bus control)
C.CRT adjusting mag-
netic field
Adjusting signals
WG Phillips pattern
Do not use the Phillips
pattern of FRANCE
SECAM.
WG Phillips pattern
Do not use the Phillips
pattern of FRANCE
SECAM.
WG Phillips pattern
Do not use the Phillips
pattern of FRANCE
SECAM.
Adjusting conditions and procedures
1 Conditions: These are to be Cont max, Bright cent, Color
cent, and DFS modes after adjusting V.HEIGHT, VERT
POSITION, and H.CENT.
2 Adjusting procedures
a. Turn the geomagnetism correction circuit OFF (cursor
= 00).
b. Adjust the horizontal amplitude by Sub Address WID.
Make sure that the left and right white flags are hidden
to the utmost possible limit.
c. Turn the left and right vertical bars into straight lines by
Sub Address PARA.
d. Correct the trapezoid distortion by Sub Address TRAP.
e. Adjust Sub Address WID again.
1 Conditions: Cont max, Bright cent, Color cent, and DFS
modes
2 Adjusting procedures
a Turn the geomagnetism correction circuit OFF (cursor
= 00).
b Adjust Sub Address HPOS and adjust the screen cen-
ter.
(Minimize D-C in the CRT adjusting magnetic field)
1. Conditions: Cont max, Bright cent, Color cent, and DFS
modes
2. Adjusting procedures
a. Turn the geomagnetism correction circuit OFF (cursor
= 00).
b. Adjust the V. Position to the center by Sub Address
VPOS so that the up-and-down positions of the Phillips
Pattern’s circle will come to the center.
c. Adjust HEIGHT by Sub Address HIT so that the up-
and-down flags of Phillips Pattern can be hidden to the
utmost possible limit.
d. Adjustment is to be made facing south or north. If it is
impossible to do so, offset the adjustment by geomag-
netism.
Magnetic field UC/UM(BV=35
µ
T)
UH/UE (BV=0
µΤ
)(BH=40
µΤ
)
UA (BV=–50
µΤ
)(BH=25
µΤ
)
UR (BV=45
µΤ
)(BH=20
µΤ
)
UG (BV=30
µΤ
)(BH=35
µΤ
)
UK (BV=35
µΤ
)(BH=30
µΤ
)