GE HEALTHCAREDRAFT VOLUSON® P8 / VOLUSON® P6
DIRECTION 5459672-100, R
EVISION 6 DRAFT (JANUARY 17, 2013)  PROPRIETARY SERVICE MANUAL
Chapter 7 - Diagnostics/Troubleshooting 7-35
7-9-3 PatternGen - Pattern Generator Test.
This test can help to find out where image problems are caused from (FrontEnd of BackEnd 
processing).
•  Connect a probe and then press the FREEZE
 key to "run" the live scan (Write Mode).
•  Select the PATTERNGEN button (Pattern Generator) in the System Diagnostics Tools window.
The pattern data are fed in the RFS board. If pattern is shown correctly like below picture, this means 
that the whole BackEnd digital scan converter part of RFS is ok.
7-9-3-1 Troubleshooting
• Pattern is shown correctly:
a.) Perform "Channel Test Diagnostics", see Channels Overall Test on page 7-44.
• Pattern is shown irregular:
a.) Perform "RFS Diagnostics", see RFS Overall Test on page 7-40.
Figure 7-42  Pattern Generator is shown correctly