Grass Valley 8964DEC v.1.1.0 - Manual (Page 65)

8964DEC/-FS — Instruction Manual 65
Service
Service
The 8964DEC modules make extensive use of surface-mount technology
and programmed parts to achieve compact size and adherence to
demanding technical specifications. Circuit modules should not be ser-
viced in the field unless directed otherwise by Customer Service.
Power-Up Diagnostic Failure
If the module has not passed self-diagnostics, do not attempt to trouble-
shoot. Return the unit to Grass Valley (see
Module Repair below).
Troubleshooting
If your module is not operating correctly, proceed as follows:
• Check frame and module power and signal present LEDs.
• Verify power at the voltage testpoints (see Figure 33 ) and check Fuse F1
if no voltage is detected.
• Check for presence and quality of input signals.
• Verify that source equipment is operating correctly.
• Check cable connections.
• Check output connections for correct I/O mapping (correct input con-
nector is used for the corresponding channel output).
Refer to Figure 7 on page 18 for the location of PWR LED and Table 2 on
page 19 for proper LED indications.
Figure 33. 8964DEC Fuse and Voltage Testpoints Locations
8208_08
r1
Voltage Testpoints
J1
+5V
–5V
+3.3V
+1.5V
Fuse: 2 A Slow
125 V F1