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Sony Wega CRT KV24FS120 Service Mode Settings

Posted: Fri Sep 09, 2016 6:25 pm
by AznKhmerBoi
Hi all,

I just bought a tv (Sony Wega CRT KV24FS120) and the grid matrix etc... was off, so I wanted to rebalance/fix the issue by using the service mode.
Unfortunately i tried and failed many times to get it right.


Right now its okay, the screen is filled and everything seems to be aligned, but when sprites are scrolling gets stretched and just looks bad.

I was wondering if anybody here know where I can get the default factory settings (data/number) for each field/object on the service console for a 24inch model.

Thank you,

Credit ( ... uggestions)

[PWR OFF] - [DISP], [5], [VOL+], [PWR ON]
[PWR OFF] - [DISP], [5], [PWR ON]

The TV will turn on in service mode and the screen will look something like this:

[1] = Moves to Previous Menu Item
[4] = Moves to Next Menu Item
[3] = Adjusts Value Up
[6] = Adjusts Value Down
[MTS] = Toggles Stereo/Mono Audio

[MUTE] followed by [ENTER] = stores NEW service mode settings to NVRAM

[8] followed by [ENTER] = Restores All *USER* settings to factory defaults

[0] followed by [ENTER] = Read Default service mode value from stored settings. (service mode reset)

[PWR OFF] = Leave Service Mode any settings not written will be in effect until TV is unplugged or a Reset is performed.

BEFORE 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.
AFTER storing NEW settings - restore original value from list you made of original values before adjustments and store in NVRAM.


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. 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.

AFC 0 0-3 AFC Loop Gain
HFRE 42 0-127 Horizontal Frequency
VFRE 11 0-31 Vertical Frequency
VPOS 16 0-31 Vertical Picture Position
VSIZ 18 0-63 Vertical Picture Size
VLIN 6 0-15 Vertical Picture Linearity
VSCO 10 0-15 Vertical Correction
HPOS 6 0-15 Horizontal Picture Position
HSIZ 11 0-31 Horizontal Picture Size
PAMP 18 0-31 Pincushion Amp.
CPIN 4 0-7 Corner Pincushion
PPHA 7 0-15 Pincushion Phase
UPIN 10 0-31 Pincushion upper ends, vertical lines
LPIN 10 0-31 Pincushion lower ends, vertical lines
PPHA 7 0-15 Keystone correction vertical lines
HKEY 6 0-15 Keystone distortion, horizontal lines
HTRP 8 0-15 Keystone correction, horizontal lines
VCOM 2 0-7 Vertical Compensation
VUSN 0 0,1 Shrinks Vertical Height to 16x9 Area
VZOM 0 0,1 Places Bars on Picture to give 16x9 Area
EHT 15 Adjust Height of VZOM
ASP 47 Vertical Picture Size - Aspect
SCRL 31 Vertical Picture Position
HBLK 1 0,1 Horizontal Blanking (on/off)
LBLK 15 Left Blanking
RBLK 3 Right Blanking
GAMP 18 0-31 Green Amp.
BAMP 14 0-31 Blue Amp.
GDRV 18 0-31 Green Driver
BDRV 14 0-31 Blue Driver
RCUT 15 Red Cutoff - (lower level)
GCUT 4 0-15 Green Cutoff - (lower level)
BCUT 1 0-15 Blue Cutoff - (lower level)
RDRV 21 Red Amp. - (upper level)
GDRV 18 Green Amp. - (upper level)
BDRV 14 Blue Amp. - (upper level)
DCOL 1 0,1 Color Temperature
COFF 0 0,1 Color On/Off - B/W Picture
Y-DC 0 0-15 BLACK background level retention
R-YR 15 0-15 Sets the amount of RED
R-YB 15 0-15 Sets the amount of RED
G-YG 11 0-15 Sets the amount of GREEN
G-YB 9 0-15 Sets the amount of GREEN
AXIS 0 0-15 Cleans up the red & oranginess in yellow
DPIX 0 0-3 Dynamic Picture
CROM 28 0-63 Chroma Trap
SPIX 30 0-63 Sub-Picture Contrast (Picture)
SCON 30 0-63 Sub-Picture Contrast (Picture)
SHUE 23 0-63 Sub-Picture Hue
SCOL 26 0-63 Sub-Picture Color
SBRT 22 0-63 Sub-Picture Brightness (Black Level)
RGBP 10 0-63 RGB Picture
SHAP 6 0-15 Sub-Picture Sharpness
SHPF 3 0-15 This helps with the S-Video sharpness
NRLV 0 0-3 Find the value that gives the best resolution
VSMO 1 0,1 Vertical Pull In Range (1 allows PAL in B&W)
REF 2 0-3 Reference Line
ROFF 1 0,1 Red Gun ON(1)/OFF(0)
GOFF 1 0,1 Green Gun ON(1)/OFF(0)
BOFF 1 0,1 Blue Gun ON(1)/OFF(0)
RON 1* 0,1 Red Gun ON(1)/OFF(0)
GON 1* 0,1 Green Gun ON(1)/OFF(0)
BON 1* 0,1 Blue Gun ON(1)/OFF(0)
AXPL 0 0,1 Cleans up Reds/Yellows
ABLM 0 0,1 Automatic Background or Brightness Limiter
NOTC 1 0,1 Notch Filter ON(1)/OFF(0)
VMLV 0 0,1 Scanning Velocity Modulation ON(1)/OFF(0)
VAPI 0 0,1 Sets vert resolution for 3-d comb filter
VAPG 0 0,1 Sets vert resolution for 3-d comb filter
DRGB 0 0,1 On-Screen Display (OSD) Intensity
DISP 35 0-63 On-Screen Display (OSD) Menu Placement (L/R)
VTMS 0 0-3 On Screen Display (OSD) - On/Off
DPDV 1 0-3 Lumipon
MPIC 8 0-63 Lumipon (depth)
SVOL 0 0-15 Sub-Volume (0=Max,15=Min.)
SBAL 7 0-15 Sub-Balance (0=Left,15=Right)
BASS 8 0-15 Sub-Bass (0=Min., 15=Max.)
TRE 7 0-15 Sub-Treble (0=Mix., 15=Max.)
MPX - 0-15 Audio ATT
FILO - 0-15 Audio I1
DEEM - 0-15 Audio I2
STEV - 0-15 Audio OSC1
SAPV - 0-15 Audio OSC2
PILO - 0-15 Audio PILOT
SEP - 0-15 Audio WIDE BAND
VD - 0-15 Audio SPECTRAL
LVOL - 0-15 Audio VOLUME-L
RVOL - 0-15 Audio VOLUME-R
PADJ 63 0-255 Hor/Vert Picture Adjustment (total picture)
UYBO 32 0-63 Upper Y Bow (B/R Top)
LYBO 27 0-63 Lower Y Bow (B/R Bottom)
HAMP 34 0-63 Horizontal Amp. (B/R OuterLines)
HTIL 32 0-63 Horizontal Tilt (R/R)
UCBO 39 0-63 Upper C Bow (B/R Corners Only)
UTIL 37 0-63 Upper Tilt (Top Corners)
LCBO 41 0-63 Lower C Bow (B/R Corners Only)
LTIL 40 0-63 Lower Tilt (Bottom Corners)
DCSH 36 0-63 DC Shift (Static Convergence All Vertical)
VBOW 30 0-63 Bow distortion correction vertical lines
VANG 30 0-63 Skew correction, vertical lines
RTCO - 0-63 Raster Rotation
PHPO 79 0-127 Picture In Picture (PIP) Horizontal Position
PHUE 0 0-31 Picture In Picture (PIP) Hue
MSHU - 0-31 Main PIP hue
MSCOL - 0-31 Main PIP color
SSHU - 0-31 Small PIP Hue
SSCO - 0-31 Small PIP Color
GV SKEW - 0-63 convergence service item
GH SKEW - 0-63 convergence service item
GH BOW - 0-63 convergence service item
RV SKEW - 0-63 convergence service item
BV SKEW - 0-63 convergence service item
GH PIN - 0-63 convergence service item
GH CENT - 0-63 convergence service item
GV CENT - 0-63 convergence service item
RH CENT - 0-63 convergence service item
RV CENT - 0-63 convergence service item
BH CENT - 0-63 convergence service item
BV CENT - 0-63 convergence service item
ID0 88 0-127 Model ID
ID1 127 0-127 Model ID
ID2 104 0-127 Model ID
ID3 64 0-127 Model ID
ID4 19 0-127 Model ID
ID5 1 0-127 Model ID

Re: Sony Wega CRT KV24FS120 Service Mode Settings

Posted: Mon Sep 19, 2016 8:32 am
by Ziggy587
AznKhmerBoi wrote:I was wondering if anybody here know where I can get the default factory settings (data/number) for each field/object on the service console for a 24inch model.

There are no default settings! Each TV has to be calibrated slightly different than the next, even from the factory. That's why when talking about the service menu most people say something like this: Be sure to write down all of your setting BEFORE changing anything.

What I recommend doing is writing down all your current settings now. They might not be perfect, but you can always make things worse. At least you would be able to revert back to decent settings.

Re: Sony Wega CRT KV24FS120 Service Mode Settings

Posted: Tue Oct 11, 2016 6:08 am
by Anapan
As Ziggy mentioned, each has it's own settings from the factory; That being said, I have found service manuals with default values listed - the defaults listed for my 3CRT rear projector were almost identical to what it came with. I've also helped someone find what I thought was the correct service manual and it turned out to be for a very-similar model, but the default values in it messed his TV up really bad - much worse than he had done by experimentation when he asked for help here. Don't trust listed defaults if you find some.

Here's the service manual for your TV (supposedly? - it lists it on the first page) ... fs120.html

To help fix the straightness of the display after adjusting the grid to my liking, I use a yard stick and several grid and concentric circle test patterns to try to perfect the settings. Using the yard-stick on all verticals and horizontals - deciding on a measurement for the grid lines, then using just the straight edge to align the diagonals can get things pretty close. Getting things just-right definitely takes a whole lot longer than setting them close-to-right. On the TVs I've done the grid and/or convergence to, even having things close was a lot better than how the picture was - mostly due to the amount of overscan which was cut off originally. I did find that I had to re-adjust a lot while viewing scrolling screens (you can display video, overlay the grid on the video, switch to dots , etc. while adjusting geometry). I recommend the 240p Test Suite, tho I mostly used an ancient laptop I have which has composite video output built-in and great overscan controls in it's ATI driver.

Here's my test files and such - maybe they can help you a bit.
My ISP's service is on the fritz lately - I think it's because of the optical infrastructure so let me know if the above link's down - my IP probably changed due to outage.