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L M
4 4
VIDEO OUTPUT RPQ MAP
PAGE
5 OF
5
I
052
-Exchange logic card C2.
-Reinstall cable in position C4.
GO TO STEP 057,
ENTRY POINT FF.
53
-Install
a
jumper between C4D04 and C4D08,
and a jumper between C4D02 and C4D08.
-Observe the image on the 3279 screen.
DOeS a faint green image appear with the
blue?
Y N
05'1
-Remove jumpars.
-Exchange logic card C2.
-Reinstall cable in position C4.
GO TO STEP 057,
ENTRY POINT
FF.
SS
-Remove jumpgrs.
-Measure resistance between D04 and D08 on
the free end of the connector.
With the VIJEO CONTROL switch set to
ENHANCE the resistance should be
approximately 0 ohms.
With the VIDEO CONTROL switch set to
NORMAL the connection should be
open-circuit.
I S
a
11
correct?
Y N
056
-Inspect cable and VIDEO CONTROL switch.
-Exchange any failing FRU.
-Reinstall cable in position C4.
GO TO STEP 057,
ENTRY POINT FF.
57
-Reinstall cable in position C4.
-Exchange logic card C2.
GO TO SlEP 057,
ENTRY POINT FF.
(ENTRY POINT
FFI
-Perform VIDEO OUTPUT checkout procedure
in PDG.
-Return VIDEO CONTROL and SIGNAL POLARITY
switches to their original settings.
GO TO MAP 0000, ENTRY POINT
BB.
MAP 1000-5
04FEB81
MAP 1000-5
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