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 --------------------------------------------------------------------------- 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. --------------------------------------------------------------------------- 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! --------------------------------------------------------------------------- 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. --------------------------------------------------------------------------- Press 1 and 4 to select the adjustment to be made. Press 3 and 6 to make the adjustment. --------------------------------------------------------------------------- You must save all correct adjustments you make. Press [MUTING][ENTER] (on the remote) after every adjustment you wish to keep! --------------------------------------------------------------------------- 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. --------------------------------------------------------------------------- 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 ----------------------------------------------------------------- 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 =============================================================== Mr. Gizmo of Technical Connections (Gord Hunt)