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H J K l
S S S S
CONTROL MAP
PAGE
7 OF
I
083
.Check the +5v and the +8.Sv on the
video card test points - see Figure
6-9.
Are both voltages correct?
Y N
084
.Switch power OFF
~.
-See Figure 6-7 to check the
continuity of the voltage
supplies.
Repair any failure
found.
GO TO MAP 0000. ENTRY POINT BB.
085
-Exchange logic card C2 then 02.
GO TO MAP 0000. ENTRY POINT BB.
086
-Exchange logic card 02 then C2.
GO TO MAP 0000. ENTRY POINT BB.
087
-If the screen is not blank, take the Y
path now.
• Press keys CONTROL and B 0 I
• Set the TEST/NORMAL switch to NORMAL.
Does the screen always remain completely
blank?
Y N
088
-Exchange logic card C2.
If this
corrects the problem,
GO TO MAP
0000.
ENTRY POINT BB.
elf the problem remains,
GO TO MAP
0300.
ENTRY POINT A.
089
GO TO MAP 0300. ENTRY POINT BB.
90
GO TO MAP 0300. ENTRY POINT A.
MAP
0100-7
091
(ENTRY POINT Cel
·Observe the TEST 0 pattern at high and
low settings of the BRIGHTNESS control on
the front panel.
-Take the Y path
if
the image is missing
or too poor to answer the question.
.00
not
mistake a missing color(s) or a
continuous raster for poor color balance.
Do the raster. focus. pu,"ity and color
balance adjustments look good?
Y N
092
eMake any necessary adjustments to the
CE controls (see Figure 1-4 ).
You may use MIM section 5.3.5 (Raster)
or MIM section 5.3.4 (Focus) or MIM
section 5.3.2 (Purity) or MIM section
5.3.6 (Color balance) to make the
adjustment.
If this corrects the problem,
GO TO MAP 0000. ENTRY POINT BB.
If the problem is still present,
GO TO PAGE 3. STEP 027 •
ENTRY POINT DO .
093
-If this display contains no feature
cards, (E2, F2, G2, G4) take the Y path
nOl.J.
-Switch power OFF
~
and remove any feature
cards.
.Replace the CS-DS(-ES) top card
connector,
if
moved.
See Figure 1-6.
-Switch power ON
~.
-Repeat preceding test (step 003 or 005).
Is test still bad?
I
;~4TO
MAP 0800. ENTRY POINT A.
095
.Set the TEST/NORMAL switch to TEST.
-Engage Intensi ty Overri de.
(Turn the
brightness knob fully counterclockwise.)
The image on the screen may not be very
bright.
Around some of the edges
tIle
three rasters
should not be aligned and the 3 primary
colors (Red, Green, Blue) should be
visible in some areas around the edge.
See Figure 2-1.
Does the image look similar to this?
Y N
8
U
096
GO TO MAP 0300. ENTRY POINT A.
04FEB81
MAP
0100-7
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