Toshiba 29SH9UH Service Manual page 5

(5)Adjust the sub-4-pole magnets only in case there is any deviation of Xv bow-shaped convergence. (To be usually set at
the initial position)
Align both sides with the sub-4-pole magnets and minimize the deviation of blue and red with the main 4-pole magnets.
blue
red
Main 4-pole magnet
I CIRCUMFERENCE CONVERGENCE:
Perform correction in the following manner.
*
A
blue
green
B
red
C
(Parts code:23 948 274) TC-S
S
N
Blue color or blue mark
Adjust VR 1 and minimize the deviation of YH. *Only 27", 30" and 32".
green
Red blue
Red blue
green
Adjust VR 2 (YHC) and minimize the deviation of YH.
green
Red blue
blue
Red
green
Adjust VR 3 (YV) and minimize the deviation of YV.
G
red/blue
red/blue
blue
red
6-pole magnet
blue
green
red
D
(Insertion position of correction
piece)
D
E
E
F
F
*Insert the correction piece between the
picture tube and the deflection yoke.
Bonded surface
green
blue Red
blue Red
green
green
blue Red
Red blue
green
Red
green
blue
blue
green
Red
H
Xv bow-shaped deviation of convergence
green
green
• Adjust coils and minimize deviation
(The 27" unit has coils underneath it)
A
A
B
B
C
C
I 30", 27", 32"
VR3
I 34"
blue
green
Red
Red
green
blue
G H
– 5 –
blue
red
Sub-4-pole magnet
D
blue
green E
red
F
(Parts code:23 948 464)
N
S
Bonded surface
Transparent
VR2 VR1
YV YHC
27" (Part No. 23 947 371)
32", 30" (Part No. 23 947 121)
34" (Part No. 23 993 080)
Perform correction by inserting the
correction piece into the clear-
ance of terminal board coils of
the deflection yoke.
Note:
Perform insertion by turning the
metal side to the terminal board
side of the deflection yoke.