Tektronix Grass Valley 4000, Installation And Service

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5-20
Section 5 — Troubleshooting and Diagnostics
Figure 5-7. 064804—Keyer Carrier Module
1. Check the Operator’s Guide to verify correct usage of the function that appears broken.
2. Verify the function in question is supported by the current software release.
3. Are the +5V and -5V LEDs at front edge of module lit? If not, check fuse.
Restore modules to original location. Now, swap Keyer
The problem
followed module.
Problem is not on
Keyer Module
064804
Swap the module in question with any
other Keyer module in the Frame.
The problem did not
follow the module.
mezzanines (064826) on the Keyer Module in question.
Keyer mezzanine is bad. Visually inspect for obvious
problems: bent connector pins (on carrier also);
improperly socketed parts; or broken solder connections.
If unable to locate problem, contact customer service for
Restore mezzanines to original location. Now, move the
Borderline mezzanine (064909) on the Keyer module in
question to another module.
The problem did not
follow the module.
Problem is not on
mezzanine module
064826
The problem
followed mezzanine.
Borderline mezzanine is bad. Visually inspect for obvious
problems: bent connector pins; improperly socketed
parts; or broken solder connections. If unable to locate
problem, contact customer service for instructions.
Problem is not on
mezzanine module
064909
The problem did not
follow the mezzanine.
Problem is probably
on the carrier.
1. Visually inspect the module for obvious problems: bent connector pins;
improperly socketed parts; or broken solder connections. If no obvious
problem is found, restore the Preview mezzanine to its original location.
2. Verify alignment of deserializers. See Alignment Procedure xxxx.
064804 - Keyer Carrier Module
instructions.
3. If unable to find a problem, contact customer service for instructions.