Sony service adjustments 1993 Sony

Technical Connections
=====================

You may want to print this out and stuff it in your
service truck somewhere....................

Sony service adjustments

(C) 1994 Copyright Rob Myers

Sony TV software service adjustments

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Most Sony TV's made since 1990 have electronic service adjustments.
This means that adjustments like picture geometry, white balance, and
colour
presets are adjusted via on screen displays, using the remote control.

Here are some generic instructions on how to get to the adjustments,
and a listing of the adjustments that may be made.

These apply to North American (NTSC 3.58) TV's only, to the best of
my knowledge.
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Warning!

Please don't mess around with the service adjustments unless you know
what you're doing! Remember, if something goes wrong, don`t save the
adjustment! Just unplug the TV and plug it back in, and any unsaved
adjustments will be restored to their factory presets. Also, the TV
will be out of service mode now.

I strongly recommend that you get the SAMS or Sony service manual for
your TV before you change any settings.

As you modify settings, record the factory preset values so that you
may return to them if something goes wrong. Also, record your new values,
in case they aren`t saved properly. Nominal values are listed below
for most settings below. And, please, ple don't mess with the ID-x
settings!
These are different for every chassis, so the nominal values below
won't probably be valid!
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   Before entering service mode, turn on the TV and tune in a good
picture; turn it off.
   Look at the jack panel on the back of the set; is there a service
switch?  This is a small, round opening in the cabinet near the video
1/video 2 inputs or the antenna jack.
   If so (typically on early-90's TV's), push a plastic pen cap or
similar device into the opening while turning the power on. The TV
should now be in service mode.
   If there is no service switch (typically on more recent TV's) type
the following sequence on the remote (within one second of each other):

[DISPLAY][5][VOL +][POWER]

   If that doesn't work, turn the TV off and try:
[DISPLAY][5][POWER]

   The TV should turn on in service mode.
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   Press 1 and 4 to select the adjustment to be made.
   Press 3 and 6 to make the adjustment.
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You must save all correct adjustments you make.
   Press [MUTING][ENTER] (on the remote) after every adjustment you
wish to keep!
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   To verify that the settings have been stored, unplug the TV, wait
a few seconds, plug the TV back in, reenter service mode, and ensure
that the settings are correct.
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Here is the list of settings.

(*) denotes set-up adjustments- return them to their nominal values
after alignment.

------------------------------ PREFORMATTED -------------------------------

Display       Description              Data Range   Nominal Value

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AFC           AFC Loop Gain            0-3          0 *

HFRE          Horizontal Frequency     0-127        70

VFRE          Vertical Frequency       0-31         14

VPOS          Vertical Center          0-31         17

VSIZ          Vertical Size            0-63         28

VLIN          Vertical Linearity       0-15         8

VSCO          Vertical Correction      0-15         6

HPOS          Horizontal Center        0-15         6

HSIZ          Horizontal Size          0-31         31

PAMP          Pincushion Amp           0-31         24

CPIN          Corner Pincushion        0-7          3

PPHA          Pincushion Phase         0-15         6

VCOM          V Compensation           0-7          2 *

GAMP          Green Amp.               0-31         20

BAMP          Blue Amp.                0-31         17

GCUT          Green Cutoff             0-15         7

BCUT          Blue Cutoff              0-15         8

CROM          Chroma Trap              0-63         28 *

SPIX          Sub Contrast [Picture]   0-63         20

SHUE          Sub Hue                  0-63         33

SCOL          Sub Colour               0-63         32

SBRT          Sub Brightness           0-63         35

RGBP          RGB Picture              0-63         30 *

SHAP          Sharpness                0-15         10 *

VSMO          V Pull In Range          0,1          0 *

REF           Reference Line           0-3          2 *

ROFF          Red Out                  0,1          1 *

GOFF          Green Out                0,1          1 *

BOFF          Blue Out                 0,1          1 *

ABLM          ABL Mode                 0,1          0 *

NOTC          Notch On/Off             0,1          1 *

DRGB          OSD Intensity            0,1          0 *

DISP          Display Position         0-63         40

DPDV          Lumipon (dpdv)           0-3          1 *

MPIC          Lumipon (depth)          0-63         48 *

SVOL          Sub Volume               0-15         0 *

SBAL          Sub Balance              0-15         7

BASS          Sub Bass                 0-15         8 *

TRE           Sub Treble               0-15         8 *

UYBO          Upper Y Bow              0-63         31

LYBO          Lower Y Bow              0-63         25

HAMP          Horiz Amp                0-63         33

HTIL          Horiz Tilt               0-63         33

UCBO          Upper C Bow              0-63         38

UTIL          Upper Tilt               0-63         40

LCBO          Lower C Bow              0-63         41

LTIL          Lower Tilt               0-63         46

DCSH          DC Shift                 0-63         37

PHPO          PIP Horiz Position       0-127        76

PHUE          PIP Hue                  0-31         0 *

ID-0          Model ID                 0-127        =

ID-1          Model ID                 0-127        =

ID-2          Model ID                 0-127        =

ID-3          Model ID                 0-127        =

ID-4          Model ID                 0-127        =

= When IC 102 is replaced, these values must be reset.  Here are the

nominal values for a few chassis:

Model #            ID-0   ID-1   ID-2   ID-3   ID-4

----------------------------------------------------

KV-27S10           64     77     64     0      16

KV-29RS10          64     77     64     0      16

KV-32S10           72     77     64     0      16

KV-27V10           120    127    72     0      17

KV-27V10C          120    127    32     0      17

KV-27V10M          120    127    32     0      17

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Mr. Gizmo of Technical Connections

(Gord Hunt)
