Zeiss humphrey HFA II-i series Field Service Manual page 168

Troubleshooting
System startup state 6 - Set white - The internal variable for the operation of the white
stimulus on the white bowl have failed.
Recommended Action:
• Cycle power to restart
• Check/replace spot detector/cable
• Check/replace motor driver PCB
System startup state 7 - Projector on 1 - The projector lamp warmup cycle has failed.
Recommended Action:
• Cycle System Power
• Replace Projection Bulb
• Check projection path mechanical alignment
• Check/replace projector lamp cable
• Check/replace motor driver PCB
System startup state 8 - Bowl on - The bowl failed to reach its calibrated value.
Recommended Action:
• Cycle Power to restart.
• Perform Bowl Intensity Calibration
• Check/replace spot detector/cable
• Check EEPROM
• Check/replace bowl lamps (bowl lamps must be replaced in pairs only)
• Check/replace motor driver PCB
System startup state 9 - Initialize DVM - The built in Digital Voltmeter (Motor Board)
failed
to initialize.
Recommended Action:
• Dim Room lights and Retry
• Check/replace spot detector/cable
• Refer to Common Error Messages (Section 5.10).
• Check/replace motor driver PCB
System startup state 10 - Zero detector - The built in Digital Voltmeter (Motor Board)
failed to find a reasonable zero value.
Recommended Action:
• Dim room lights and retry.
• Refer to Common Error Messages (Section 5.10)
• Check/replace spot detector/cable
• Check projection path
• Check/replace motor driver PCB
Field Service Guide
Humphrey Field Analyzer II - i
Confidential and Proprietary
5 - 18 52235C1105