CTL Head Replacement, Overviews | Sony DVW-790WS/790WSP instruction

4-2. Parts Replacement

4-2-14. CTL Head Replacement

Overviews

Replacement

Entrance Head Assembly Removal

CTL Head Replacement

Entrance Head Assembly Installation

Entrance Head Assembly Cleaning

Adjustments after replacement

Tape Running Adjustment

Video Tracking Adjustment

CTL Head Height Adjustment

CTL Head Position Adjustment

CUE/TC Head Position Adjustment

Preparations

1.Check that the unit is in the unthreading end mode.

2.Turn the power off.

3.Remove the front lid and the outside panel. (Refer to section 1-6 of Maintenance Manual Part 1.)

Tools
. Torque screwdriver bit (for M2)	: J-6325-380-A
. Torque screwdriver bit (for 3 kg)	: J-6325-400-A
. Cleaning cloth	:	3-184-527-01
. Cleaning fluid	:	9-919-573-01

4-62	DVW-790WS/709WS/707

DVW-790WSP/709WSP/707P P2V1

Image 146

Sony DVW-790WS/790WSP, DVW-709WS/709WSP manual CTL Head Replacement, Overviews

Contents

DVW-707/707P DVW-709WS/709WSP DVW-790WS/790WSP Warnung Recycling NICKEL-CADMIUM Batteries Page Table of Contents Mechanical Deck Parts Replacement Audio IN, Audio OUT CH1, CH2, DC IN, DC OUT Tape Path Adjustment VTR System Alignment DVW-790WS/709WS/707 Camera System Electrical Alignment Only for DVW-707/707P Page Contents Purpose of this manual Related manuals Illust No. Part No Description Usage Fixtures and Adjustment EquipmentFixtures Illust No Description Usage Adjustment Equipment Equipment Model Name Procedure Using the Extension BoardsUsing the EX-655 and EX-656 Boards Board to be Extension board Reference Checked Using the EX-657 and EX-658 Boards When extending the DCP board assembly DC-DC Converter Using the EX-667 BoardSV-210 Board CN2CN22 DIF-75 Board Optional Board BKDW-702CN2 Reconnecting Disconnecting/Reconnecting Flexible Card WiresDisconnecting IC Link Description on CCD Block Number Description on EEPROM/NV-RAM DataSpare CCD Units Eeprom on the ES-23 Board Setting/Adjustment After Board ReplacementAdjusting After Eeprom Replacement Ref. No. Address Data stored Board Setting/Adjusting after Replacement DC Fans PrecautionSetting/Adjusting After Board Replacements Page How to Enter the Service Mode Service ModeAbout the Setup Card Data Structure Fundamental Operation of the Setup Menu Contents of Setup Menu MID White PresetMaster Gain LOW High ID Edit Setup Card Read →CAMWrite →CARD Write Protect SEL DCC VTR ModeFunction 2/2 DCC Function FIX/DCC/ADP.K FIX Zebra 2 Detect VF Setting Zebra 1 DetectZebra 1 Aperture Zebra Select ENC Setup LVL Burst PhaseRGB Setup LVL Level Skin Tone DTL Test OUT ENC/R/G/B Level BlackFlare Level Gamma Table Iris Mode Level PhaseSC Phase Iris Weight SAW AdjustmentShading G Para Offset Whitea Preset WHTOffset WHT WARM-COOLA LOW Light BatteryOperation B-G SEL LOW Light Level Service DelayData Reset Operation AWB Level Gate Menu SEL Marker 1/3 Menu SEL Setup CardVF Setting Marker 2/3 Modulation ResolutionMeasurement Sensitivity ND Comp ND Detection OFF/EXEC/RESET AD Gain AD Clock PhaseClock Phase VTR ADJ EQ Adjustment Display Description DTL DP DIAG.STATUSMPX ROM Setup Menu List Setup C RM-P9 RM-B150 SET C-SET Remark Turbo YES Remark Setup CVTR Mode YES OFF REC Inhibit CCU Assignable SW Shutter EVS YES CLS SET Remark YES Level ENC Y Level YES Black Flare Test OUT SC 0/180 SEL RM-B150 SET C-SET Remark REC Tally YES Upper Time Code Disp OFF Loop Recording Preset WHT Color Temp P YESDelay YES FRM Shutter FRM Shutter Unit YES OFF YES OFF Level 11SC-H YES Function 1/2 OFF Function 2/2 VF Setting Wide ScreenYES OFF Level 143DTL Level 243DTL Menu SEL Preknee KS on Test OUT ENC Test SAW OFF BC COMP.ADJ FIELD/FRAME YES Field Test OUT ENC VsubGain TMP MOD.BAL. TMP SAW/REC Test Level Test SAW OFF AD ADJ AD Gain AD Clock Phase ND Comp ND Detection OFF YET Setup C RM-P9 RM-B150 F-SET MPX DTL ROM SV1 SV2 WSHPage Section Parts Replacement Replacing Boards Replacing the MB-810 and MB-811 Boards MB-810 Board MB-811 Board Replacing the HN-260 Board Replacing the CI-20 and CI-21 Boards Removal Replacing Boards Reinstallation Required tools Replacing the CCD Unit and Its Components ReplacementAdjustments after replacement Replacing the CCD Unit Removal Removing the Front Assembly CN1 CN2 Removing the CCD Unit Removing the ND Filter KnobRemoving the CC Filter Knob DVW-790WS/790WSP/709WS/709WSP DVW-790WS/790WSP/709WS/709WSP DVW-790WS/709WS Reinstallation Reinstalling the CCD UnitReinstalling the ND Filter Knob DVW-707 Electrical Alignment Reinstalling the Front AssemblyAdjustment After Replacement Tape Running Adjustment CN3 ReinstallationAdjustment After Replacement Replacing the Boards Inside the CCD Unit CN7 CN4 CN5 CN2CN3 CN1 CN6 790WS/790WSP Removing the Connector Box Assembly Replacing the External Connectors/SwitchesCH2, DC IN, DC OUT Connectors Removing the RM-180 Board Removing the CNB-11 BoardRemoving the CNB Stay DC in connector Removing the ConnectorAudio IN/AUDIO OUT connector DC OUT connector VF Connector MIC in Connector Power Switch, MIC in ConnectorPower Switch Shutter Switch Replacing the Rotary Encoder Replacing the DC Fans Upper DC Fan Lower DC Fan Replacing the Camera SW Ornamental Plate CP-329 board Removal Required tool Camera SW ornamental plate Mm or less Inside panel Reinstallation Required tool Replacing the Card Door AssemblyReplacing the 40-pin Fitting Assembly About Tools General Information for Parts Replacement and AdjustmentAbout Cleaning Blade Tape Cleaner depending on model Unthreading End Mode Threading End/Unthreading End ModeThreading End Mode Selection Procedure into the Unthreading End Mode Manual Eject Assembly Removal/Installation Installation Index Part Name Section About screwdriver and torque reading About stop washer About oil and grease Upper Drum Assembly Replacement Overviews Tools Basic informationPreparations Brush Assembly Removal Removal Brush Cover Removal Desoldering the Leads of Slip Ring Assembly Upper Drum Assembly Removal Installation Cleaning of Contact Surfaces Upper Drum Assembly Installation Upper Drum Eccentricity Adjustment Tool Installation Upper Drum Eccentricity Adjustment Upper Drum Eccentricity Adjustment Tool Removal Brush Cover Installation Soldering the Leads of Slip Ring AssemblyBrush Assembly Installation Cleaning of Video Heads and Tape Running Surfaces CTL Head Height Adjustment Adjustments After Replacement Tape Running AdjustmentVideo Tracking Adjustment CTL Head Position Adjustment Brush Assembly Replacement for Slip Ring 2x2 Brush assembly Brush cover Connector Installation Brush Assembly Installation Slip Ring Assembly Replacement Remove this screw first Blue Slip Ring Assembly RemovalInstallation Slip Ring Assembly Installation Brush Assembly Installation Drum Assembly Replacement Removal Video Head Cleaner Removal Disconnection of the Brush Assembly Connector Drum Assembly Removal CN2 CN3 Cleaning Drum assembly Positioning pins Video Head Cleaner Installation Drum Assembly InstallationConnection of the Brush Assembly Connector Cleaning of Video Heads and Tape Running Surface CUE Head Height Adjustment Video System Adjustment Pinch Roller Replacement Pinch Roller Cleaning Installation Install Shaft CleaningPinch Roller Installation Removal Pinch Roller Removal HC Roller Assembly Replacement for Video Heads Removal Mode Selection VH Cleaner Assembly Removal Operation Ceck Installation HC Roller ReplacementVH Cleaner Assembly Installation CUE Brush Replacement for CUE Head Manual Eject Assembly Removal Operation Check Installation CUE Brush ReplacementManual Eject Assembly Installation Brake Band Assembly Replacement Brake Band Assembly Removal Removal Band Holder Removal Installation Reel Table Cleaning Brake Band Assembly Installation Band Holder Installation FWD Back Tension Adjustment Soft Brake Assembly Replacement Adjustment after replacement Removal Soft Brake Assembly Removal Soft Brake Assembly Installation Adjustment After Replacement Brake Torque Check 10. S/T Idler Assembly Replacement Or T Idler Assembly Installation Or T Idler Assembly RemovalInstallation Cleaning of the Installation Shaft 4x2.5 Swing Gear Assembly Replacement Removal Removal of the Swing Gear Assembly Fixing Screw Mechanical Deck Assembly Removal Swing Gear Assembly Removal Installation Swing Gear Assembly Installation Mechanical Deck Assembly Installation Swing Gear Assembly Fixation Adjustment After Replacement Belt Tension Adjustment Timing Belt Replacement Removal Mechanical Deck Assembly Removal Timing Belt Removal Installation Cleaning of the PulleysTiming Belt Installation HN hole Capstan Motor Replacement Removal Manual Eject Assembly Removal Installation Capstan Motor Installation Capstan Motor Removal With drop-safe Pin of the chassis Adjustments After Replacement Belt Tension Adjustment CTL Head Replacement Removal Entrance Head Assembly Removal Entrance Head Assembly Cleaning Installation CTL Head ReplacementEntrance Head Assembly Installation Adjustments After Replacement Tape Running Adjustment CUE Head Replacement Gear Block Assembly Removal Cassette Compartment Removal CUE Head Block Assembly Removal Installation CUE Head Replacement CUE Head Block Installation Gear Block AssembIy InstaIIation Cleaning of the HeadCassette Compartment Installation Video Tracking Adjustmen Audio System Adjustment Reel Table Replacement Removal Reel Table Removal S reel table removal Reel table removal Reel Table Height Adjustment Installation Reel Shaft CleaningReel Table Installation Adjustments After Replacement FWD Back Tension Adjustment Put the remaining poly washer s in the step Pinch Arm Assembly Replacement Removal Pinch Arm Assembly Removal Installation Installing Shafts Cleaning Applying Oil to Installing Shafts Pinch Arm Assembly Installation Pinch Eoller Cleaning Sensor a Detection Pin Replacement Removal Sensor Cover a Removal Installation Detection Pins Installation Sensor Cover a Installation Sensor B Detection Pin Replacement Removal Sensor Cover B Removal Sensor Cover B Installation Tension Regulator Arm Assembly Replacement Tension Regulator Arm Assembly Removal Removal Brake Band Removal Tension Regulator S4 Guide Cleaning Installation Tension Regulator Arm Assembly InstallationBrake Band Installation Overviews Preparations Disconnection Brush Assembly Connector Removal Cassette Guide Removal Catcher S Removal Drawing Arm RemovalDriving Gear Removal Threading Link Assembly Removal Slider Threading base Threading gear assembly installation Parts Replacement Threading Link Assembly Installation Catcher S Installation Driving Gear Installation Drawing Arm Installation 100 Cleaning of the Head and the Tape Running Surface Connection the Brush Assembly ConnectorCassette Guide Installation Replacement of Loading Motor Motor Removal Pinion Gear Removal Installation Pinion Gear Installation Motor Installation Gear Block Assembly Installation Replacement of FE Head 108 FE Head Removal Remove the one screw and remove the FE head BLK GRY Harness RemovalHarness Soldering Installation FE Head Installation Installation Tape Cleaner Installation Replacement of Tape CleanerTape Cleaner Removal Replacement of Tape Guide Tape Guide Removal Installation Tape Guide Installation 114 Adjustment After Replacement Tape Guide Height Adjustment 115 116 Attaching the Mechanical Deck Mechanical Deck ReplacementRemoving the Mechanical Deck Mechanical Adjustment Tension Regulator Operating Position Adjustment Check Mode Selection Mode Cancel Adjustment Position AdjustmentPoint for adjustment Tension Regulator Operating Position Check FWD Back Tension Adjustment Tool Back Tension Adjustment Check REC Mode SettingAdjustment Eject Mode Setting Reference of adjustment Brake Torque Check Adjustment Mode Cancel Check SettingCase that the value does not meet the specification Side Brake Torque Check Belt Tension Adjustment Adjustment Belt Tension AdjustmentPage Index Location of Tape Path System Contents Specifications Tape Running AdjustmentChecks Play Mode Playing back the tape top Drum Entrance Side Threading End Mode Play Mode Playback at tape end FWD Mode Fast forward at tape topREW Mode Rewind at tape top REW Mode Rewind at tape end REV Mode Rewind at tape endFWD Mode Fast forward at tape end Tape Running Check at the Drum Exit Side Checks After Adjustment Video Tracking CheckTape Running Re-check at the Drum Entrance Side CTL Head Height Check Drum Exit Side Checks Play Mode Playing back the tape top REV Mode Rewind at tape end Tape Running Check Around the Capstan Shaft CUE Head Azimuth Adjustment Adjustments T2 and T3 Guides Height AdjustmentReference for adjustment Tape Running Re-check at the Drum Exit Side Video Tracking Adjustment RF Waveform Check Checks Play ModePlay Mode REV search mode Tape Running Check Drum exit side Tracking Adjustment Drum Exit SideVideo Tracking Re-check CUE Head Height Check CTL Head Height Adjustment Checks Play Back If the Level Increases When Pushing Up the TapeAdjustments After Adjustment CTL Head Position Adjustment CTL Head Position Adjustment CTL Head Position Re-check Adjustments CTL Head Position AdjustmentAdjustment After Adjustment CUE/TC Head Position Adjustment CUE Head Height Adjustment Play back ZR2-1/P from 00 minute to 15 minute segment Adjustments CUE Head Height Adjustments CUE Head Head-to-contact Check CUE Head Azimuth Check CUE Head Head-to-tape Contact Adjustment CUE Head Azimuth Check CUE Head Head-to-tape Contact Adjustment CUE Head Head-to-tape Contact Re- check Adjustments CUE Head Head-to-tape Contact AdjustmentCUE Head Head-to-tape Contact Check CUE/TC Head Position Adjustment CUE/TC Head Position Re-check Adjustments Play BackAdjustment SV REF CF Re-check according to the steps 1 CUE Output Level Check Check CUE Output Level Check Preparation Adjustment Procedure Power System AdjustmentBattery End Detection Voltage Adjustment Check Procedure Setting upon Completion of Adjustment Servo System AdjustmentAutomatic Servo Adjustment Automatic PG Phase Adjustment Manual PG Phase Adjustment GND Audio System Adjustment1. D/A Level Adjustment Output Limiter Adjustment AGC Level Adjustment CUE Playback Level Adjustment CUE Recording Bias Adjustment CUE Recording Level Adjustment Video System Adjustment Preparation Playback Equalizer Automatic Adjustment Confirmation Procedure Recording Current Automatic Adjustment PrecautionPage Screen Mode Setting General Information for Electrical AdjustmentInitial Switch Settings Equipment/Fixtures Initial Setting Replacement period when the chart is used as the reference Maintaining the Grayscale ChartHandling precautions Murakami Color Research Laboratory Setting Illumination when the reflective chart is used INT SC Frequency VCO Cont Frequency CheckTest OUT → ENC Video GEN OUT Lock Clock Phase AD Clock Phase AdjustmentAD Clock Phase IRE Ntsc ENC OUT Adjustment ENC Level Adjustment Chroma Adjustment Setting After Adjustment INT SC Phase AdjustmentSC Phase Blanking Width RGB Sync Test OUT Level AdjustmentRGB Setup RGB Level Modulator Balance Adjustment → CAM/ON Test SAW Adjustment AD Gain R/B AD Gain AdjustmentKnee → OFF Test SAW → OFF Gamma Gamma → on VA Gain AdjustmentS35*PRESET WHT Color Temp P Black Shading Adjustment Preset White AdjustmentShading Adjustment S32 *W-SHADING B White Shading AdjustmentS30 *W-SHADING G Test SAW → OFF Gamma Correction AdjustmentMaster Gamma Black Set Adjustment Setting After Aadjustment Flare Adjustment Flare Knee and White Clip Adjustments Manual Knee and White Clip Adjustments Preknee DCC DCC Pre Knee AdjustmentGamma → OFF Test SAW DCC D Range DCC Knee AdjustmentDCC Point → Level Depandent Adjustment Detail Signal AdjustmentCrispening Adjustment Ratio Detail Frequency Adjustment16-4. H/V Ratio Adjustment Knee APT Detail Level AdjustmentKnee Aperture Adjustment APT.LVL Detail Black Clip Adjustment 169/43 Mode → Select the 43 mode 17-4. H/V Ratio Adjustment Detail LVL DTL H B . Clip 43 Factory setting Skin Tone Adjustment Zebra Adjustment Iris Weight → 0 MIN Automatic Iris AdjustmentIris Mode Iris Weight Adjustment After Replacing Filter Disk Unit ND Detection → Exec Iris → C Close Initial Setting for SwitchesLens S06*MASTER Gain Maintaining the Grayscale Chart Setting Illumination when the reflective chart is used Video OUT GEN SC Lock OUT Spec = 40 ± 1 IRE Ntsc = 300 ± 7 mV PAL On the setup menu, adjust as follows S40*ENC ADJ Spec 10.9 ± 0.2 us Ntsc 12.0 ± 0.3 us PAL Spec = 100 ± 2 IRE Ntsc = 700 ± 14 mV PAL Spec = 100 ± 2 IRE Ntsc = 700 ± 10 mV PAL Make sure that the carrier leakage at portion B is not S35*PRESET WHT S50*B-SHADING B Fine WhitepS48*B-SHADING G Para On the setup menu, adjust as follows S25 *LEVEL Spec ± 1 IRE Ntsc ± 7 mV PAL Spec 109 ± 2 IRE Ntsc 763 ± 14 mV PAL Spec ± 2 IRE Ntsc DCC Knee Adjustment Reduce the noise at gray portion to a 16-4. H/V Ratio Adjustment Detail Level Adjustment On the setup menu, set as follows S12*FUNCTION 1/2 Component in the saturation detection ZEBRA1 APT. LVL → 1 % Adjustment Procefure Adjustment After Replacing Filter Disk Unit DVW-790WS/709WS/707 DVW-790WSP/709WSP/707P P2V1 Sony Corporation