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CONVERGENCE HAP
PAGE
4 OF
5
(Step 037 continued)
Did your results match the expected
results?
Y N
038
-See Figure 1-4.
The amplifier card may
have the 4 potentiometers marked
'GAIN' .
-If not take the N path now.
These are the gain controls for the
convergence amplifiers.
-First write down their settings.
The red, green and blue controls arQ
normally set 3/4 away from the
counterclockwise position, and the blue
lateral set fully clockwise (Maximum
gal n).
-If
any are set
less than normal, set
them to normal and repeat step 037.
-If the results are still not as
expected set all 4 gain controls to
maximum (fully clockwise), and repeat
step 037.
Do your results now match the expected
results?
Y N
R 5
039
-Switch power OFF
~.
-Reset all 4 GAIN controls to the
positions you wrote down.
• Reseat the AS connector on the logic
gate and the PIS connector (Figure
1-4)
on the amplifier card.
-Switch power ON
m.
Is the problem fixed?
Y N
040
-Switch power OFF
~.
-Check
the continuity of the
connections in the table below.
(See Figure 6-10)
LOGIC GATE AMPLIFIER CARD
PIN.
TEST POINT
B2S05
F
(red)
B2S06
G
(green)
B2U07
H
(blue)
B2S03
E (blue let)
Is the continuity of each good?
Y N
041
·locat~
and repair bad connection.
See Figure 3-2
GO TO MAP 0000, ENTRY POINT BB.
042
-Exchange the amplifier card.
GO TO MAP 0000, ENTRY POINT BB.
043
GO TO MAP 0000, ENTRY POINT BB.
B M N R S
HAP 0600-4
133
L
GO TO MAP 0000, ENTRY POINT BB.
045
-Exchange logic card B2 (then C2
then D2).
GO TO MAP 0000, ENTRY POINT BB.
046
GO TO STEP 050,
ENTRY POINT CC.
047
eGo to the adjust instructions, MIM
Chapter 5 to set up static convergence
and purity.
-Start at MIM section 5.3.1 to set up
static convergence, then go to MIM
section 5.3.2 to set up purity.
.If you make any purity adjustment, go
back to MIM section 5.3.1 to check the
static convergence.
-Verify that the raster 15 correctly
centered etc.
and then go to MIM
section 5.3.3 to set up the dynamic
convergence.
Could you set up the purity and static
convergence?
Y N
048
-Switch power OFF
~
.
-Verify the connections to the
convergence/purity coil assembly from
P19
on the amplifier card.
(See
Figure 3-2 and Figure 1-4.)
-If no failure is found, exchange the
amplifier card, then the convergence
Call
assembly
GO TO MAP 0000, ENTRY POINT BB.
049
Could you set up dynamic convergencel
Y N
050
(ENTRY POINT CC)
-Switch power OFF
~.
-Check position of the convergence
coil assembly.
See Figure 4-8.
-Exchange the amplifier card if no
problem is found .
• See MIM Chapter 5 to carry out
adjustments.
-If the problem remains, exchange the
B2 logic card (then D2 then C2).
GO TO MAP 0000, ENTRY POINT BB.
051
GO TO MAP 0000, ENTRY POINT BB.
052
-leave the convergence routine by holding
down the ALT key and pressing TEST.
Did an Error Code 228 or 229 (3274) or 55
or 56 (327&) appear?
II
5 5
T U
04FEB81
HAP 0600-4
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