Tektronix TG8000 Service Manual

HD3G7 module troubleshooting
Problem ident
ification
Ifthereisaproblem,first perform the HD3G7 Performance Verification procedure,
foundintheTG8000 Specifications and Performance Verification Te chnical
Reference ma
nual, available on the Web at www.tektronix.com/downloads. Any
problems found with that procedure can be a starting point for troubleshooting.
General pro
blems and actions to follow are shown in the following table.
Table 11-4: HD3G7 module troubleshooting
Problem Actions
• Fails Power On Self Test (POST)
• HD3G7 does not appear in menu
• Run power on test procedure.
• Run power on in Factory mode test procedure.
• Check for current software.
• Run power supply test.
• Perform swap modules procedure.
• No output from Signal BNCs
• Run power on test procedure.
• Check diagnostics reported values.
• Run power supply test.
• Verify configuration.
• Perform swap modules procedure.
• No s ignal at Trigger Output BNC • Check diagnostics reported values.
• Run Test Multiple Frame Rate procedure.
• Verify configuration.
• Check diagnostics reported values.
• CRC Errors in converter mode
• Run converter mode test procedure.
• Run Check diagnostics procedure.
• Generator video color errors • Verify configuration.
• Perform swap modules procedure.
Generator Mode:
• Unstable video
• Excessive jitter
• Check diagnostics reported values.
• Run Test Multiple Frame Rate procedure.
Converter Mode:
• Unstable video
• Excessive jitter
• Check diagnostics reported values.
• Run converter mode test procedure.
• Generator output lost when
format is changed
• Run Test Multiple Frame Rate procedure.
• If no other problem found, replace the HD3G7 m odule.
TG8000 Multiformat Test Signal Generator Service Manual 11–13

Tektronix TG8000 Specifications

General

Brand	Tektronix
Model	TG8000
Category	Portable Generator
Language	English