Sony KDS-R50XBR1 Training Manual page 107

The DMB is capable of displaying 2 sets of test

patterns.
Service item "PATN" displays test patterns that take

the same path as the main video from the DMB.
Service item "GTPN" displays test patterns that take

the same path as the graphics generated in the DMB.
To display the DMB internal test pattern:

Enter service mode: [Display] + [5] + [Vol. +] + [Power].

Once in service mode press the [JUMP] button one

time on the remote to enter DM service mode.
You will be in the "QM Info." Screen.
Scroll to Item 1 "PATN" or Item 2 "GTPN"

using the [1] button on the remote.

You can scroll through the various test patterns

using the [3] button on the remote.
TVP-21
DMB Test Patterns
Appendix
104