Tektronix Grass Valley 4000, Installation And Service

Page: 264 / 286

5-30
Section 5 — Troubleshooting and Diagnostics
Figure 5-17. 064820—Serial Input Module
064820 - Serial Input 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. Is the LED at front edge of the Sync Generator module lit? If not, check fuse on the
The problem
is still
Problem is
now absent.
Using a video monitor, examine the active loop-through
output of the input in question on the suspect module.
1. Visually inspect the module for obvious problems: bent connector
pins; improperly socketed parts; or broken solder connections.
2. If unable to locate problem, contact customer service for instructions.
Serial Input Module.
4. Identify which Serial Input Module is responsible for the input in question from the
following list:
Serial Input 1 (Slot C16): Inputs 1 thru 8
Serial Input 2 (Slot C15): Inputs 9 thru 16
Serial Input 3 (Slot C14): Inputs 17 thru 24
Serial Input 4 (Slot C13): Inputs 25 thru 32
Serial Input 5 (Slot C12): Inputs 33 thru 40
Serial Input 6 (Slot C11): Inputs 41 thru 48
Serial Input 7 (Slot C10): Inputs 49 thru 56
Serial Input 8 (Slot C8): Inputs 57 thru 64
Move the suspected module (as identified above) to
another Serial Input slot in the frame. Reconfigure the
switcher, select this input, and view on the switcher’s
output or at an Aux Bus output.
Problem is not on
Serial Input
The problem did not
follow the module.
Module 064820
Problem is
Module in
The problem
module.
probably the
question.
followed the
apparent.
Problem is
Module in
probably the
question.