HP 8711B Service Manual page 94

Category 1 Failures - Dead or No Response, No Display,
Unreadable Display, or Error Messages on the Display
Troubleshooting A6 Power Supply Assembly Problems
Check the Rear Panel LEDs
If the green LED is on and the red LED is o :
If neither LED is on:
If the green LED is on, the red LED is on steadily, and the fan is o :
If the fan is still o :
If the green LED is on, the red LED is on steadily, and the fan is on:
If the green LED is on, and the red LED is blinking:
T roubleshooting and Block Diagrams 4-5