Sony KP-41T65C service manual +B OVP Confirmation

Page 45

SECTION 4

SAFETY RELATED ADJUSTMENTS

4-4. +B OVP CONFIRMATION

1.Remove CN651 connector.

2.Connect a voltmeter to TP135V, and TP (PROT) and ground.

3.Connect a 220kΩ variable resistor, across pin 3 and pin 5 of IC651 set to maximum value.

4.Supply 220VAC to variable autotransformer.

5.Set PICTURE and the BRIGHTNESS controls to minimum.

6.Gradually turn the 220kΩ variable resistor, and check if OVP works properly when the voltage of TP135V is between 139.0 ~ 151.5V. (Fig.4-2)

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Contents Projection TV Video Video in 2 Video 2 Input SpecificationsDisassembly Table of ContentsSafety Relatedp Adjustments DiagramsInstalling the projection TV Welcome!PrecautionsConnecting an antenna HookupTo a conventional VCR To an S video equipped VCR Connecting a DBS receiverTo a projection TV To a projection TV and VCRConnecting a camcorder Connecting an audio systemConnecting two VCRs for tape editing using Monitor OUT Getting to know buttons on the remote control Connecting a Sony Sava series speaker systemInserting batteries Button colorErasing or adding channels Setting up the projection TV automaticallySetting cable TV on or off Adjusting convergencePress Vor vto select Channel ERASE/ADD Erase and/or add channelsSwitching quickly between two channels Presetting channelsWatching the TV Muting the soundWatching two programs at one time PIP Freezing the picture Adjusting the picture VideoChanging the position of the window picture Swapping the main and window picturesPress Vor vto select Ntsc STD, MEDIUM, or High and press AdjustingSelecting Stereo or Setting the speaker Bilingual Programs Using audio effectUsing the menu to set audio effect Using the audio effect buttonSetting daylight Setting the clock Saving time Daylight Setting audio outCustomizing the channel names Setting the timer to turn the projection TV on and offSetting video labels Blocking out a Setting YourSetting your favorite channels Favorite ChannelsSetting Caption Setting the manufacturer’s codeOperating video equipment Operating video equipment Operating a cable box or DBS receiverTroubleshooting Index to parts and controlsProjection TV Front Remote control Service Position Rear Board RemovalChassis Assy Removal HA Board Removal KP-53S65C/61S65C HA Board Removal KP-41T65CBeznet Assy Removal KP-41T65C Beznet Assy Removal KP-53S65CScreen Frame Assy Removal KP-61S65C Mirror Cover Assy Removal KP-41T65C Mirror Cover Assy Removal KP-53S65CReflection Mirror Removal KP-61S65C HIGH-VOLTAGE Cable Installation and Removal Picture Tube Removal KP-41T65CPicture Tube Removal KP-53S65C/61S65C Picture Tube Bracket Assy Removal KP-41T65C Picture Tube Bracket Assy Removal KP-53S65C/61S65C Install a Chassis Assy Setting of Service Stay ASSY. KP-41T65C/53S65CScreen G2 Adjustment Screen Voltage Adjustment Rough AlignmentFocus Lens Adjustment Focus VR AdjustmentDeflection Yoke Tilt Adjustment Pole Magnet AdjustmentDefocus Adjustment Blue Display Electrical Adjustment by Remote CommanderMuting Adjust Buttons and IndicatorGH Cent BH 4PIN Mscn Main SUB Contrast Convergence Adjustment GH Cent GH BOW GH Skew GH 4BOW Green Vertical Size Adjustment GV Wave GV 4PIN White Balance Adjustment AGC AdjustmentHV Hold Down Circuit Operation Check and Adjustment Board HV Regulation Circuit Check and AdjustmentHV HOLD-DOWN Adjustment Operation Check+B OVP Confirmation SUB-HUE and SUB-COLOR Adjustment SHUE, Scol BER Display Adjustment DispSUB Contrast Adjustment Scon P Position Adjustment PIPH, PipvP SUB HUE, SUB Color Adjustment IHUE, Icol P SUB Contrast Adjustment PconMemo Block Diagram Section DiagramsComb FILTER,PIP Processor Frame Schematic Diagram Printed Wiring Boards and Schematic DiagramsCircuit Boards Location 13Vp-p 500kHz 8Vp-p H 0Vp-p H 60Vp-p Board WaveformsDiode BoardBoard IC801, 802 PA0053B 5Vp-p 4Vp-p 4Vp-p H 2Vp-p H8Vp-p H 7Vp-p H 2Vp-p H 8Vp-p 6Vp-p HPT Board IC Voltage List PT Board IC5052 SDA9288X-GEG PT Board WaveformsPT Board PT BoardCR Board Waveform CG Board Waveform140Vp-p H 160Vp-p H CR Board IC701 TDA6106Q CB Board WaveformCG Board IC701 TDA6106Q CB Board IC701 TDA6106QZDY/VM STBY5V Board HA BoardCover KP-41T65C Semiconductors66 68 5358 +BVTP 3X12 Cover KP-61S65CChassis KP-41T65C 170Chassis KP-53S65C/61S65C 217 201Picture Tube KP-41T65C 263KP-61S65C Picture Tube KP-53S65C/61S65CSection Electrical Parts List CONNECTOR, Board to Board 20P REF. no Description PT a 101 102 103 104 105 106 107 108 109 110 111 Relay CR CG CB CB HA 115 965-216-01 Accessories and Packing Materials MANUAL, Instruction