Hi,

What are the typcal setting names to look for in the service menu for grayscale adjustment?

I own a toshiba 72mx196.

RGB cuts and gains.

AKA RGB drives/biases
AKA RGB brightness/contrast
etc
etc
etc

and my personal favorite - items #32-37

Thanks for you replies guys.

From what I have read in another thread:

the gain/drive controls are for high (near white) grayscale settings and the cutoff/bias controls are for Low (near black) grayscale settings for each primary color.

What I would like to know is their actual names in the Toshiba 72mx196 service menu. I can't seem to find the service manual for this TV on the net like I did for my previous Sony set.

Here a list of acronyms I find in my Toshiba's service menu:

VPOS
HPOS
CNTB1
CNTR1
CNTG1
BRBL1
BRBH1
BRRL1
BRRH1
BRGL1
BRGH1
VOLM
WTBL
WTBH
WWSP
WFCS
VVDD
VTBL
VTBH
VFCS
VS3D
VSTB
ALOF
ALS
WON2
ETRE
EBAS
TREC
BASC
TONN
TREX
BASX
VOLX
EVOL
VOLST
VOLBS
V100
V75
V50
V25
V01
MAGC
OPT3
OPT2
OPT1
RYBK
BYBK
GG
ID1
CC
VBIS
SHRC
CNTX
UVTT
COLC
BRTC
CNTCB
CNTCG
CNTCR
BRCBL
BRCGL
BRCRL

Which one are used for grayscale calibration?

These sound like grayscale controls to me, although I've never been inside the service menu of a Toshiba TV. This is just based on how the acronyms look to me, so hopefully this helps but I assume you'll want to hear from somebody else who has actually calibrated grayscale on a Toshiba...

CNTCB
CNTCG
CNTCR
Sound like contrast controls for blue, green and red, which means they're the "drive" controls

BRCBL
BRCGL
BRCRL
Sound like brightness controls for blue, green and red, which means they're the "cut" controls

These also look like contrast and brightness controls for blue red and green, although I'm not sure why the brightness controls each apparently have "low" and "high" specifications:
CNTB1
CNTR1
CNTG1
BRBL1
BRBH1
BRRL1
BRRH1
BRGL1
BRGH1

So gain/drive controls = contrast and
cutoff/bias controls = brightness?

or is it the other way around like krasmuzik seems to suggest?

Here a list of acronyms I find in my Toshiba's service menu:

VPOS
HPOS
CNTB1
CNTR1
CNTG1
BRBL1
BRBH1
BRRL1
BRRH1
BRGL1
BRGH1
VOLM
WTBL
WTBH
WWSP
WFCS
VVDD
VTBL
VTBH
VFCS
VS3D
VSTB
ALOF
ALS
WON2
ETRE
EBAS
TREC
BASC
TONN
TREX
BASX
VOLX
EVOL
VOLST
VOLBS
V100
V75
V50
V25
V01
MAGC
OPT3
OPT2
OPT1
RYBK
BYBK
GG
ID1
CC
VBIS
SHRC
CNTX
UVTT
COLC
BRTC
CNTCB
CNTCG
CNTCR
BRCBL
BRCGL
BRCRL

Which one are used for grayscale calibration?

I've found some definitions...

BRTC...BRIGHT CENTER
COLC...COLOR CENTER
UVTT... BASEBAND TINT FEH
CNTX... SUB CONTRAST MAX
CNTCG... G CONTRAST CENTER
CNTCR... R CONTRAST CENTER
CNTCB... B CONTRAST CENTER
HPOS... H-POSITION
VPOS... V-POSITION
OPT1... TV SET OPTION 1
OPT2... TV SET OPTION 2
OPT3... TV SET OPTION 3
V100... VOLUME (DATA)
V75... VOLUME (DATA)
V50... VOLUME (DATA)
V25... VOLUME (DATA)
V01... VOLUME (DATA)


I still need some input on which settings (drive/cut) I have to edit to lower grayscale temp near 6500 k?

In other words I wonder which are RCUT, GCUT, BCUT, RDRV, GDRV and BDRV equivalents?

Could it be BRBL1, BRBH1, BRRL1, BRRH1, BRGL1 and BRGH1?

just found more detailled descriptions and presets

It is there, but obviously it is buried. From the service manual:

1. Turn volume to minimum
2. Press mute twice on remote control
3. Press mute button again and hold button down
4. While continuing to hold MUTE on remote, press MENU button ON TV SET

You are now in service menu.

The following adjustments are available:
Item Name of adjustment Preset Data
BRCRL Same as BRRL1 00H 00H (b)
BRCGL Same as BRGL1 00H 00H (b)
BRCBL Same as BRBL1 00H 00H (b)
CNTCR Same as CNTR1 64H 64H (b)
CNTCG Same as CNTG1 64H 64H (b)
CNTCB Same as CNTB1 64H 64H (b)
*BRTC BRIGHTNESS CENTER 78H 78H (a)
*COLC COLOR CENTER C0H C0H (a)
*UVTT BASE BAND TINT 80H 80H (a)
*CNTX CONTRAST MAX FFH FFH (a)
VBIS VBI Setting 64H 64H (a)
CC Closed Caption 64H 64H (a)
ID1 VBID 64H 64H (a)
GG Gemstar 00H 00H (a)
BYBK B-Y OFF SET 00H 00H (a)
RYBK R-Y OFF SET 00H 00H (a)
OPT1 TV SET OPTION 1 00H 00H (b)
OPT2 TV SET OPTION 2 25H 25H (b)
OPT3 TV SET OPTION 3 00H 00H (b)
MAGC AGC of MTS decoder 00H 00H (b)
VO1 Volume1 Data 53H 54H (b)
V25 Volume25 Data A1H A2H (b)
V50 Volume50 Data D3H D0H (b)
V75 Volume75 Data EDH E7H (b)
V100 Volume100 Data EFH EFH (b)
VOLBS Correction Volume at DTV FEH FEH (b)
VOLST Correction Volume at Stereo/SAP of ATV 00H 00H (b)
EVOL Reduce Volume For Bassboost (Nonuse) 00H 00H (b)
VOLX Volume Limiter For Hotel 64H 64H (b)
BASX Bass Max Data 18H 1CH (b)
TREC Treble Max Data 19H 19H (b)
TONN Tone Min Data 02H 0EH (b)
BASC Bass center Data 01H FFH (b)
TREC Treble center Data FAH FAH (b)
EBAS Add Bass on FOCUS 00H 05H (b)
ETRE Add Treble on FOCUS 01H 03H (b)
WON2 Bass Reducer 08H 0DH (b)
ALS ALS point 00H 00H (b)
ALOF Reduce in ALL (wow, TruSurround) off 00H 00H (b)
VSTB Reduce Volume For Stable Sound 00H 00H (b)
VS3D Reduce Volume For SRS3D 00H 00H (b)
VFCS Reduce Volume For FOCUS 00H 03H (b)
VTBH Reduce Volume For TruBass High 00H 01H (b)
VTBL Reduce Volume For TruBass Low 00H 01H (b)
VVDD Reduce Volume For Dolby 00H 00H (b)
WFCS FOCUS Level 01H 01H (b)
WWSP SRS 3D Level 02H 02H (b)
WTBH TruBass High Level 02H 02H (b)
WTBL TruBass Low Level 01H 01H (b)
VOLM Volume coefficient at 1/2 Mute 32H 32H (b)
BRGH1 G BRIGHTNESS HIGH 00H 00H (b)
BRGL1 G BRIGHTNESS LOW 00H 00H (b)
BRRH1 R BRIGHTNESS HIGH 00H 00H (b)
BRRL1 R BRIGHTNESS LOW 00H 00H (b)
BRBH1 B BRIGHTNESS HIGH 00H 00H (b)
BRBL1 B BRIGHTNESS LOW 00H 00H (b)
CNTG1 G CONTRAST 64H 64H (b)
CNTR1 R CONTRAST 64H 64H (b)
CNTB1 B CONTRAST 64H 64H (b)
VPOS V-POSITION 00H 00H (b)
HPOS H-POSITION 00H 00H (b)

These sound like grayscale controls to me, although I've never been inside the service menu of a Toshiba TV. This is just based on how the acronyms look to me, so hopefully this helps but I assume you'll want to hear from somebody else who has actually calibrated grayscale on a Toshiba...

CNTCB
CNTCG
CNTCR
Sound like contrast controls for blue, green and red, which means they're the "drive" controls

BRCBL
BRCGL
BRCRL
Sound like brightness controls for blue, green and red, which means they're the "cut" controls

These also look like contrast and brightness controls for blue red and green, although I'm not sure why the brightness controls each apparently have "low" and "high" specifications:
CNTB1
CNTR1
CNTG1
BRBL1
BRBH1
BRRL1
BRRH1
BRGL1
BRGH1

according to my post above...

if

CNTCB = CNTB1
CNTCG = CNTG1
CNTCR = CNTR1
Sound like contrast controls for blue, green and red, which means they're the "drive" controls

BRCBL = BRBL1
BRCGL = BRGL1
BRCRL = BRRL1
Sound like brightness controls for blue, green and red, which means they're the "cut" controls

then what's the use of these 3?
BRBH1
BRRH1
BRGH1

the L and H near the end means they apply to the Low and High color temps.

Anybody has any idea whats the use of these?

BYBK B-Y OFF SET 00H 00H (a)
RYBK R-Y OFF SET 00H 00H (a)

So gain/drive controls = contrast and
cutoff/bias controls = brightness?

or is it the other way around like krasmuzik seems to suggest?

You are correct, gain/drive is the bright portion, cuts/bias/g2 is the black portion.

I don't believe Kras meant to suggest otherwise, he was just suggesting the controls as examples in terms of names.

For 2006 toshiba mx196 owners ... this could be interresting. I am very happy with the result!

Hi all,

After reading this thread (http://www.avsforum.com/avs-vb/showthread.php?t=852536) I realized that my calibration quite was a bit off. I had not taken into account the color brightness (Y) but only xy (tint and saturation) in my Color Management System (CMS). So I decided to redo it all over again...

I was able calibrate tint, saturation and brightness (xyY) to almost perfectly match the CIE chart. My only deception is that this set (out of box) has quite a strong yellow cast in skin tones as we can clarely see in the transformer pics (Megan Fox's face) a few posts back. The yellow cast was still a bit apparent even after calibration. So I had to slide the yellow tint a bit towards red color to correct that (while keeping yellow saturation and brightness at proper level) and boy am I happy with the results!!

Here are the results:

Service menu (Grayscale):

Offsets:

CNTCB/CNTB1: -24 (6CH to 54H)
CNTCR/CNTR1: -11 (64H to 59H)
CNTCG/CNTG1: -4 (68H to 64H)

BRCBL/BRBL1: +3 (00H to 03H)
BRCRL/BRRL1: +3 (00H to 03H)
BRCGL/BRGL1: +8 (00H to 08H)

Possible values are 00H, 01H, 02H, 03H, 04H, 05H, 06H, 07H, 08H, 09H, 0AH, 0BH, 0CH, 0DH, 0EH, 0DH, 10H, 11H etc... (up to FFH)

User menu:

PS3 & xbox 360 Elite and Cable (Games, Blu-ray, HD-DVD, DVD and HD broadcasts)

Picture Settings

Contrast : 92
Brightness : 57
Color : 45
Tint : +7
Sharpness : 7

Advanced Settings

Dynamic Contrast : Low
DNR : Off
MPEG Noise Reduction : Off
Color Temperature : Warm
Lamp Mode : High Bright
Vertical Edge Enhancer : Off

Color management (CMS) :

Red : 19, -2, 11
Green -9, -8, 21
Blue : -29, 10, 3
Yellow : -13, -9, 2
Magenta : -6, -10, 6
Cyan : 2, -11, 20

Game Mode : Off