VAPI 0 0,1 Sets vert resolution for 3-d comb filter VMLV 0 0,1 Scanning Velocity Modulation ON(1)/OFF(0) VSMO 1 0,1 Vertical Pull In Range (1 allows PAL in B&W)ĪBLM 0 0,1 Automatic Background or Brightness Limiter NRLV 0 0-3 Find the value that gives the best resolution SHPF 3 0-15 This helps with the S-Video sharpness SBRT 22 0-63 Sub-Picture Brightness (Black Level) SCON 30 0-63 Sub-Picture Contrast (Picture) SPIX 30 0-63 Sub-Picture Contrast (Picture) Y-DC 0 0-15 BLACK background level retentionĪXIS 0 0-15 Cleans up the red & oranginess in yellow VZOM 0 0,1 Places Bars on Picture to give 16x9 Area VUSN 0 0,1 Shrinks Vertical Height to 16x9 Area HTRP 8 0-15 Keystone correction, horizontal lines HKEY 6 0-15 Keystone distortion, horizontal lines PPHA 7 0-15 Keystone correction vertical lines LPIN 10 0-31 Pincushion lower ends, vertical lines UPIN 10 0-31 Pincushion upper ends, vertical lines Initially HOSC is set to 7 (factory default), you'll need to change it to about 11 - this will eliminate the color banding in the picture. If you have a XBR250 and you're experiencing horizontal blue, green or red banding across the screen with a component video connection, you will need to enter service mode and adjust the HOSC parameter.

= Leave Service Mode any settings not written will be in effect until TV is unplugged or a Reset is performed.īEFORE storing NEW settings - unplug TV from wall, wait a few seconds, then plug back in, turn TV set on - All settings not written will have been lost.ĪFTER storing NEW settings - restore original value from list you made of original values before adjustments and store in NVRAM.

followed by = Read Default service mode value from stored settings.

followed by = Restores All *USER* settings to factory defaults Followed by = stores NEW service mode settings to NVRAM

Service manual sony trinitron