Agilent Technologies 8753ES Option 011 Service Manual page 206

Power Supply Troubleshooting
If the Green LEDs of the A8 Are Not All ON
light is faulty.
• If the LEDs are still not on steadily, continue to
page 5-16.
Table 5-4 Recommended Order for Removal/Disconnection
Assembly To Removal or Disconnection
Remove Method
1. A3 Source Remove from Card Cage
2. A7 Pulse Remove from Card Cage
Generator
3. A4 R Sampler Remove from Card Cage
4. A5 A Sampler Remove from Card Cage
5. A6 B Sampler Remove from Card Cage
6. A9 CPU Disconnect W35 and W36
7. A2 Front Panel Disconnect W17
Interface
8. A16 Rear Panel Disconnect W27
Interface
Inspect the Motherboard
Inspect the A17 motherboard for solder bridges and shorted traces. In particular, inspect
the traces that carry the supplies whose LEDs faulted when A8TP4 (SDIS) was grounded
earlier.
5-16
"Inspect the Motherboard" on
Other Assemblies that Receive Power
from the Removed Assembly
None
None
None
None
None
A20 Disk Drive
A1 Front Panel Keyboard
A25 Test Set Interface
A24 Transfer Switch (8753ES only)
A23 LED Front Panel
Chapter 5