Grass Valley 8950ADC - Manual (Page 35)

8950ADC Instruction Manual 35
Service
Service
The 8950ADC 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.
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 ( Figure 17 ) and check Fuse F2 (on
the back of the module circuit board) if no voltage is detected.
• Check for presence and quality of input signals.
• Verify that source equipment is operating correctly.
• Check cable connections.
Refer to Figure 4 for the location of PWR LED and Table 2 on page 12 for
proper LED indications.
If the module is still not operating correctly, replace it with a known good
spare and return the faulty module to a designated Grass Valley repair
depot. Call your Grass Valley representative for depot location.
Refer to the Contacting Grass Valley at the front of this document for the
Grass Valley Customer Service Information number.
Figure 17. 8950ADC Fuse and Voltage Testpoint Locations
GRASS VALLEY GROUP 8 9 5 0 A D C
6 7 1 - 4 7 9 9 -
F1.5A 125V
Solder side
(back)
F2
JP8
JP8
- 5 V
+ 5 V
+ 3 V
G N D
V o l t a g e T e s t p o i n t s
Fuse
0603_07