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background image

1-13

Opener Lever

Cassette Door Tab

View "A"

Cassette Door-Lid

Cassette Door-Lid

VCR Unit

View "A"

Press

CAUTION

Portion "a"

Top Plate

Tab

Lever

Lever

Hole

Hole

Holder Unit

Tab

Slide

+

P2552

Unsolder

Chassis

Motor P.C.B. of
Motor Block Ass'y

Rear Side View

-

P2551

DC Power Supply

(+10VDC)

"a"

"c"

"b"

"a"

"b"

Load

Unload/Eject

Main Cam Gear

Needlenose Pliers

HOT CIRCUIT

Primary circuit exists on the Main C.B.A., TV Main C.B.A., and
TV Power C.B.A.
This circuit is identified as "HOT" on the C.B.A. and in the
Service Manual. Use extreme care to prevent accidental shock
when servicing.

SERVICE MODE

In order to inhibit detection of the Supply & Takeup Photo
Transistors, Reel Sensor, and Cylinder Lock, place a jumper
between TP6001 and GND.

In this mode, Mechanism movement can be confirmed. When
removing Cassette Up Ass'y, it can be confirmed without a
cassette.

To release from this mode, remove the jumper between
TP6001 and GND.

INSTALLATION OF VCR UNIT
CAUTION

1. Swing the Cassette Door -Lid all the way open until the

Cassette Door tab clears the Opener Lever.

2. Make sure that all guide tabs are aligned properly. Then,

press the VCR Unit straight in.

Fig. 3

METHOD FOR LOADING/
UNLOADING OF MECHANISM

(Manual Method)

Turn the Main Cam Gear counterclockwise (for loading) or
clockwise (for unloading) using needlenose pliers etc.

Note:

Do not use this method if Mechanism is jammed or locked.

Fig. 4-1

(Electrical Method)

Remove the solder as shown and apply +10.0 VDC Power
Supply (DC + to Portion "a," DC - to Portion "c").

Note:

Be careful not to let the DC Power Supply Unit GND contact
the chassis GND. This may damage the Loading Motor Drive
IC (IC 2501).
Be sure to apply DC + to Portion "a" of Motor P.C.B.
If DC + is applied to Portion "b", the Loading Motor Drive IC
(IC2501) may be damaged.

Fig. 4-2

Note:

Do not forget to solder Portions "a" and "b" after loading/
unloading operation is completed.

When loading without a cassette, press Portion "a" on
both sides of the Holder Unit of Cassette Up Ass'y so that
the Levers clear the Tabs and Holes.

Fig. 4-3

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Содержание Omnivision PV-M2768

Страница 1: ...dB LP SLP more than 40 dB Hi Fi Stereo SP LP SLP more than 60 dB Wow and Flutter Normal Mono SP Less than 0 2 WRMS LP Less than 0 3 WRMS SLP Less than 0 4 WRMS Hi Fi Stereo Less than 0 015 WRMS Broadcast Channels VHF 2 13 UHF 14 69 CATV Channels Midband A through I 14 22 Superband J through W 23 36 ITEM SPECIFICATION 1 2 Video Audio VCR Tuner Tape Speed Tape Format VCR Picture Tube DISPLAY Power T...

Страница 2: ... Power Supply Signal Process OSD Audio Amp System Control Servo TV Y C Process C B A 4 2 Junction C B A 4 4 TV Main C B A 4 6 CRT C B A 4 8 Head Amp C B A 4 8 TV Stereo C B A 4 9 Hi Fi Audio C B A 4 9 Hi Fi Audio Video Head Amp C B A 4 11 Operation I II C B A 4 12 TV Main Child C B A 4 12 TV Power C B A 4 14 Audio Video Jack C B A 4 15 Capstan Stator Unit 4 15 Signal Waveform 4 16 BLOCK DIAGRAMS P...

Страница 3: ...re handling the tube 8 After servicing make the following leakage current checks to prevent the customer from being exposed to shock hazards LEAKAGE CURRENT COLD CHECK 1 Unplug the AC cord and connect a jumper between the two prongs on the plug 2 For physically operated power switches turn power on Otherwise skip step 2 3 Measure the resistance value with an ohmmeter between the jumpered AC plug a...

Страница 4: ...therwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity ESD sufficient to damage an ES device NOTE to CATV system installer This reminder is provided to call the CATV system installer s attention to Article 820 40 of the NEC that provides guidelines for proper grounding and in particular specifi...

Страница 5: ...e gW 5 hf V Xf g e e g7 Y hf V 1f g e e f J Yhg V L e g e e fW Y hg V Xe g e e e W Y V X g e eW Y V X g e W Y V X g e L W Y V O2 K H V hO2 0M I4 6K 5 V I4 6K g Y V X I4 6K Y V X I4 Y V X W Y V K O Y V Y V4 0Y VHF UHF Antenna Input Terminal In from your Antenna or Cable AC Power Plug When plugged into an AC outlet the Combination VCR consumes 7 W of electric power in OFF condition MAIN SLEEP CLOSED...

Страница 6: ...5 e f 0Y 3T5 J X e hV Y Y V4 e e h X T26T2 W26X e h 1 B 7 B1 e h e h X C 3 C5 e h R40R40R4 V40Y e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e L J e 3 K O 5 e V4 0Y e Blank Tape No Video Signal Indication When a blank section of tape comes up in Play mode or the selected channel has no broadcast signal the TV screen will turn a solid blue Warning and Instruction Displays These dis...

Страница 7: ... 7 B1 h W Y e h e e h e h T C5 3 C5 heI40M e h R MI40Y V40Y e e 6X W e heW T2 g 6KO2 e 1 7 e he MI g X e e heS U h X N H e T e he g S J L e R R e heV Y f R MI4 e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e L J e 3 K O 5e V4 0Ye Press AUDIO AUDIO FM TV DISPLAY Example O2 6X e Xe 1e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e ...

Страница 8: ... g e J V 5eW Yhf O2 6K V 1e W 1e g e 7 X H W Y heW2 W 6X hfN L 3 Y L g e V 5 7 Yhf7 M 3 I 1 hf 31 N W 1 g eJ H J H he J HeJ N e N Lhf N 3 Y L g e7 5e75hf 75 e75 f31 N W 1 g e He Hhf f H L e e3 Y g 5 e Lhf 31 J 31 e75 eN 3 f W H e31hf N O 5 N e Hhf J e LN h 7 5fN H W2 hfW 5 e 31 Lh J Hf L hf I 3 M 7 Y e N W 1h O 5 f 31 N V H hf J Hg3 Y h Y f V O gV 3 e 5 N Xg J H 31g 75 N L f H 31 f J V Lf 7 1f f h...

Страница 9: ...N button on the remote control and try the button again 2 Cable Box Universal Remote Control Operation 2 The clock is set VCR Plus Setup is complete Before you begin make sure The Remote Control may be set up to control some of the functions on your Cable box The remote control is designed to control the brands listed However it will not operate all Cable boxes made by these manufactures If you ge...

Страница 10: ... D 0 1 2 3 4 4 Explanation of Codes Code No SERVICE MODE 2192 TV Screen Fault Code Cassette Down SW and S Tab SW Data Take Up Photo and Supply Photo Sensor Data Present mechanism position code Lock code Code Digit Position Power is OFF REW FF Press Over 3 seconds SERVICE NOTES SIMPLIFIED FAULT FINDING DATA SimplifiedSelf DiagnosticSystemfacilitatesfindingthecause of the fault 4 digit fault code wi...

Страница 11: ...on does not require the use of Exten sion Cables However for more extensive servicing Exten sion Cables should be used 1 Basic Service Position Service Position 1 1 Remove Rear Cover VCR Unit TV Power C B A A V Jack C B A Top Shield Plate Ass y and Stereo Amp C B A 2 Place VCR Unit TV Power C B A A V Jack C B A and Stereo Amp C B A as shown Fig 2 1 CAUTION HOT CIRCUIT Primary circuit exists on the...

Страница 12: ...sing Coil Connector CAUTION HOT CIRCUIT DO NOT touch Power circuit during service Stereo Amp C B A Insulated material 2 Service Position with Extension Cable Kit In Service Position with Extension Cable Kit mechanism check from the Bottom Side of Mechanism Chassis and Capstan Stator Unit Capstan Motor Drive Loading Motor Drive Circuit check with power on condition can be performed Fig 2 3 Service ...

Страница 13: ...low Wire 4 pin b 8 Pin Connector P6002 on the Main C B A c 14 Pin Connector P6201 on the Main C B A d Set Mode Select SW on the Mode Select SW Ass y to EJECT position and install onto Mechanism Chassis Extension Cable 2 VUVS0005 for 2 Head Model Mode Select SW Ass y VUVS0001 8 pin 3 clip on wires 14 pin 2 pin 12 pin 15 pin 20 pin Extension Cable 2 VUVS0004 for 4 Head Model Extension Cable 2 VUVS00...

Страница 14: ...o turn this SW on Note To avoid damaging the connectors on Main C B A it is necessary to secure connectors with tape as shown 5 Set Mode Select SW on the Main C B A to Service Position 6 Plug the AC plug into an AC outlet 7 Insert a cassette The power comes on the tape is fully loaded and the unit goes into the STOP Mode 8 Place a jumper between TP6001 and GND to place the unit in Service Mode 9 C...

Страница 15: ...nd GND INSTALLATION OF VCR UNIT CAUTION 1 Swing the Cassette Door Lid all the way open until the Cassette Door tab clears the Opener Lever 2 Make sure that all guide tabs are aligned properly Then press the VCR Unit straight in Fig 3 METHOD FOR LOADING UNLOADING OF MECHANISM Manual Method Turn the Main Cam Gear counterclockwise for loading or clockwise for unloading using needlenose pliers etc Not...

Страница 16: ...Rotor Unit Fig 5 2 3 Remove the tape from the tape path 4 Rewind the tape into the cassette by rotating the Center Clutch Unit counterclockwise 5 Unhook Spring A of the Drive Rack Unit 6 Remove Screw A 7 Lift the Drive Rack Unit up so that the slot clears the guide tab WhilepullingtheDriveRackUnitoutfarenoughsothat it clears the Drive Rack Arm slide the Drive Rack Unit as indicatedbythearrowtoremo...

Страница 17: ...ying 10 0VDC Power Supply again 5 After completing the removal procedure resolder Jumper J6004 Electrical Method Electrical method can only be performed when the mechanism is moved by rotating the Main Cam Gear CAUTION If loading does not start in approx 2 seconds after DC Power Supply is applied DO NOT continue to apply DC Power Supply Instead perform Manual Method Method 1 1 Remove the solder as...

Страница 18: ...ers HOT circuit on TV Power C B A Anode Lead Degaussing Coil Connector Leads Heat Sink Plate Heat Sink Plate Deflection Yoke Connector Leads Speaker Connector Leads A V Jack C B A Leads After servicing make sure that all wires leads and clampers are placed in their original position It is important for the best operation of the unit Note Anode Lead DO NOT touch the Picture Tube Speaker Connector L...

Страница 19: ...rotect Combination VCR from being damaged by accidental shorting that may occur during servicing Also when troubleshooting the above type of Power Supply Circuit a variable isolation transformer is required in order to increase the input voltage slowly Soldering Iron Presolder Tweezers Chip Soldering Iron SPECIAL NOTE All integrated circuits and many other semiconductor devices are electrostatical...

Страница 20: ... Layout Notes for mark Z Tweezers Solder Soldering Iron b Press the part downward with tweezers and solder both electrodes as shown below Fig 8 3 Note Do not glue the replacement leadless component to the circuit board MODEL NO IDENTIFICATION MARK Use Marks shown in the chart below to distinguish the different models included in this Service Manual ...

Страница 21: ... they must not be reused Always use a new part when installing a chip part 1st 2nd 3rd B E C 1 CRT C B A 1 TV STEREO C B A or HI FI AUDIO C B A E B C LA7837 2SD1555LBMTV 2SD2499LBMA STR30130 2SC3063 AN7420 1 2SD601 2SD601A 2SB709 TV POWER C B A E C B E B C 2SC3852 2SC4533LP KT 2SC5130LF608 2SC4130LF608 2SC4559LP KT 1 2 4 3 E C B AN5265 AN3809K 1 ON3131 R KT ON3131 S KT 2SC945A 2SA733 AN5367FB AN34...

Страница 22: ...B A 3 DISASSEMBLY ASSEMBLY PROCEDURES DISASSEMBLY ASSEMBLY PROCEDURES OF CABINET Disassembly Flowchart Perform all disassembly procedures in the order described in the DisassemblyFlowchart shownbelow Whenreassembling use the reverse procedure CAUTION Disconnect AC plug before disassembly Fig D1 Rear Cover Disassembly Procedure Remove 10 Screws A Then pull the Rear Cover away Fig D2 Rear View Rear ...

Страница 23: ...he clamper 7 Model B C Disconnect Connector P4207 on the Hi Fi Audio C B A and remove the leads from the clampers 8 Disconnect 2 Connectors P805 and P806 on the TV Power C B A and remove the leads from the clampers Fig D3 1 9 SlightlyliftuptherearsideoftheVCRUnittorelease2Tabs B 10 Slide the VCR Unit out as far as it will go Then lift up the VCR Unit to release 2 Guide Tabs A and remove the VCR Un...

Страница 24: ...4 Locking Tabs B Note Work carefully so as not to break the Locking Tabs Fig D6 3 TV Power C B A Locking Tabs A Screw C Heat Sink Support Angle Sub Frame Screws B 3 TV Power C B A Tabs C Degaussing Coil Connector Sub Frame TV Power C B A Disassembly Procedure 1 Disconnect the Degaussing Coil Connector on the TV Power C B A 2 Slide out the Sub Frame along with the TV Power C B A as far as it will g...

Страница 25: ...mper Top Shield Plate Ass y TV Main C B A 6 Stereo Amp C B A Screws D Screw E Ground Wires Clampers Clampers B 7 Top Shield Plate Ass y Top Shield Plate Ass y Disassembly Procedure 1 Release 2 Clampers B on the Top Shield Plate Ass y and remove the leads from the clampers 2 Remove 3 Screws D 3 Remove Screw E and 2 Ground Wires Then remove the Top Shield Plate Ass y Fig D8 Stereo Amp C B A Disassem...

Страница 26: ...n in Disassembly Assembly Procedures of Mechanism Frame Screw H A B 9 VCR Chassis Unit Locking Tab E Locking Tab D Screws G Cassette Up Ass y Screw I Screw H Holder Unit Locking Tab F Alignment Projection Mode Select SW EJECT Position SERVICE Rotate Main C B A Disassembly Procedure 1 Disconnect 4 Connectors of P2531 P2552 P3501 and P4001 2 Carefully lift the Mechanism Chassis and Cassette Up Ass y...

Страница 27: ...ocking Tab G Then lift it up and remove Fig D12 Reassembly Notes Installation of Cassette Up Ass y 1 Confirm that the 3 pins and Locking Tab G under the Cassette Up Ass y are in each of the 4 Guide Holes on the MechanismChassiswheninstallingtheCassetteUpAss y Then slide the Cassette Up Ass y towards the back 2 Slide Holder Unit refer to Method for Loading Unloading of Mechanism in Service Notes to...

Страница 28: ...er A Step Loc No Order of steps in procedure Part Part to be removed or installed Prior Step s Steps to be completed prior to the current step Disassembly Method This chart indicates Step Location No of Parts to be serviced and prior steps to gain access items to be serviced when disassembling When reassembling perform the step s in the reverse order Cylinder Unit 3 5 3 4 5 3 4 5 7 9 Upper Cylinde...

Страница 29: ...bottom side of the mechanism chassis Main Lever Through Hole Line Up T Loading Arm Unit S Loading Arm Unit Main Cam Gear Drive Rack Arm Through Holes Through Hole Through Hole Main Lever Drive Arm Loading Rack Unit T Loading Arm Unit endmost groove endmost tooth Endmost tooth meets endmost groove Through Holes 1 Loading Post Base S Unit 2 Chassis Boss Edge The edge should be positioned within area...

Страница 30: ...stallation of Cylinder Unit 1 Install the Cylinder Unit so that the 2 holes on the lower surface of the Cylinder Unit fit over the 2 Guide Pins on the Cylinder Base and loosely secure it with 3 Screws A 2 Install the Head Amp C B A so that the hole on the Head Amp C B A lines up with the hole on the chassis and secure it with 2 Screws with Washers A 3 Position the Cylinder Unit so that foil patter...

Страница 31: ...ility Adjustment procedures Opener Piece Pinch Arm Unit Motor Block Ass y and Audio Control Head Unit Disassembly Procedure 1 Remove the Opener Piece by pulling it upward while releasing 2 Locking Tabs A 2 Pull up on the Pinch Arm Unit 3 Release 3 Locking Tabs B and remove Screw with Washer C Then remove the Motor Block Ass y and Audio Control Head Unit Fig J4 Reassembly Notes 1 Installation of Au...

Страница 32: ...ssis Through hole A as shown 3 Install the Main Cam Gear so that the 2 holes B marked E arealignedwiththeholeonchassis Through hole B as shown E indicates the EJECT position Fig J5 3 2 Holes on Main Cam Gear 1 The holes on Main Cam Gear should be aligned with the hole on chassis in each mode Through hole as shown Fig J5 4 3 Installation of Main Cam Gear and Main Cam Push Nut 1 Position the chassis...

Страница 33: ...holes 2 Turn the P5 Arm Unit to the Capstan Rotor Unit Shaft side 3 Turn the T Brake Unit to the T Reel Table side 4 Position the Main Lever so that the Loading Rack Unit Pin fits in the niche of Main Lever Confirm that pins and bosses are in the position and that the hole of Main Lever is aligned with the hole on chassis Through hole as shown Then install the Main Lever 5 Push down the Locking Ta...

Страница 34: ... distinguish between S Reel Table and T Reel Table Fig J8 2 2 Cut Washer A is not reusable Install a new one FullEraseHead TensionArmUnit SSpring Arm and S Reel Table Disassembly Procedure 1 Turn the Full Erase Head fully counterclockwise while releasing Locking Tab F as shown Then remove it 2 Unhook Spring A 3 RemovetheTensionArmUnitbypullingitupwhilereleasing 2 Locking Tabs G 4 Remove the S Spri...

Страница 35: ...or Unit Capstan Holder Unit and SS Brake Arm Unit Disassembly Procedure 1 Remove the Capstan Belt 2 Cut the Stopper with a cutter to remove 3 Pull up on the Capstan Rotor Unit 4 Remove 3 Screws B Then remove the Capstan Holder Unit 5 Unhook Spring B 6 Turn the SS Brake Arm Unit so that the Tab A lines up with the niche Then remove the SS Brake Arm Unit Fig J11 1 Reassembly Notes 1 Installation of ...

Страница 36: ...y as a replacement part Capstan Rotor Unit Capstan Holder Unit and Stopper are not reusable Install all new parts BecauseeveninvisiblescratchesontheCapstanRotor Unit shaft and the Capstan Holder Unit made when cutting the Stopper could cause tape path instability 3 Adjustment of FG Head 1 After installing perform the FG Head gap Adjustment procedures 29 PCB Holder 27 Capstan Stator Unit IC2501 CAU...

Страница 37: ... Notes 1 Installation of Center Clutch Unit 1 Fit the Center Clutch Unit into the Changing Gear as shown Fig J14 2 2 Cut Washer B is not reusable Install a new one Center Clutch Unit Changing Gear T Loading Arm Unit and S Loading Arm Unit Disassembly Procedure 1 Remove the T Loading Arm Unit by pulling it up while releasing Locking Tab K 2 Pull up on the S Loading Arm Unit Fig J13 1 Reassembly Not...

Страница 38: ...move Top Plate by releasing 2 Locking Tabs A on the left side and 2 Locking Tabs B on the right side of the Top Plate 2 Remove Wiper Arm Unit by releasing 2 Locking Tabs C Then remove the Holder Unit Fig K1 1 Loading Rack Unit Disassembly Procedure 1 Slide the Loading Rack Unit as indicated by the arrow Then pull up on the Loading Rack Unit Fig J15 Reassembly Notes 1 Alignment of Loading Rack Unit...

Страница 39: ...ar right as indicated by the arrow 2 Install the Wiper Arm Unit so that the hole on the Wiper Arm Unit is aligned with the hole on the Drive Rack Unit Fig K1 2 2 Installation of Holder Unit 1 Turn the Wiper Arm Unit so that the grooves on each end are aligned with the each groove on Side Plate L and R 2 Insert Holder Unit boss A and B into the grooves See Fig K1 1 on previous page 3 Finally in the...

Страница 40: ...late VFK0329 Post Adjustment Driver VFK1301 Silicon Grease VUZS0002 Extension Cable Kit VFK27 Head Cleaning Stick VFK0330 H Position Adjustment Driver VFKS0081 Grease Video Audio Color Bar Monoscope 6kHz MONO Extension Cable 2 VUVS0005 for 2 Head Model Mode Select SW Ass y VUVS0001 Extension Cable 2 VUVS0004 for 4 Head Model Extension Cable 2 VUVS0003 for Hi Fi Model Extension Cable 1 VUVS0002 8 p...

Страница 41: ...ench adjust the nut on the Tension Adjust Piece counterclockwise only so that there is a space of 1 mm between the left edge of the P1 Post and the right edge of the Tension Post Make sure that the center of the Hex Wrench hole is within Area A 5 After adjustment remove the Hex Wrench 6 Press the STOP EJECT button to place the unit in the EJECT Mode 7 Release the unit from the Service Mode Refer t...

Страница 42: ...ion 25 2 5g 1 Play back a T120 cassette tape from the beginning for approx 10 to 20 seconds to stabilize tape movement 2 InsertaTensionMeterintotapepathandmeasuretheback tension 3 If the reading is out of specification make sure that there is no dust or foreign material between the Tension Band of Tension Arm Unit and the Reel Table If cleaning does not correct the tension measurement replace the ...

Страница 43: ...han 15mVp p P2 AND P3 POST HEIGHT ADJUSTMENT PRELIMINARY ADJUSTMENT Purpose To properly align the position of the tape with the Cylinder Lead so that the tape runs with stability Symptom of Misadjustment 1 Since the Envelope Waveform Signal cannot be tracked properly the Playback picture will be poor 2 Since the tape does not run smoothly the tape will eventually be damaged 3 Tape interchangeabili...

Страница 44: ... the tape and insert it again to access the Neutral Tracking position 4 Play back the alignment tape and confirm that the RF envelope appears 5 With Post Adjust Driver adjust P2 and P3 post height so that the envelope waveform V1 V max is 0 7 or more becomes as flat as possible No envelope drop If the envelope drop appears on the left half of the waveform adjust P2 post height If the envelope drop...

Страница 45: ...l Head Symptom of Misadjustment Ifthecontrolsignalisnotproperlypickedup Servo Operation cannot be achieved A Blue screen will be seen in Playback This confirmation is required when the Audio Control Head is replaced 1 Play back a T120 cassette tape and check that the lower edge of the tape runs approximately 0 25 mm above the lower edge of the Audio Control Head 2 If necessary adjust Black Screws ...

Страница 46: ...velope is at maximum 6 Before finding the center of the maximum period of the envelope rotatethefixturebackandforthslightlytoconfirm the limits on either side of the maximum period 7 Push the Tracking Control Up Button on the Remote Control several times count the number of times pushed until the maximum envelope is reduced to 1 2 8 Reset the tracking to the neutral position by ejecting the tape a...

Страница 47: ... 4 Frequency Counter Frequency Range 0 to 150MHz 5 Plastic Tip Driver and Non Metal Driver 6 Isolation Transformer Variable 7 VHS Alignment Tape VFMS0003H6 8 White Pattern Generator HOW TO READ THE ADJUSTMENT PROCEDURES Fig E1 PG SHIFTER ADJUSTMENT Purpose DeterminetheVideoHeadSwitchingPointduringPlayback Symptom of Misadjustment May cause Head Switching Noise and or Vertical Jitter Test Point TP3...

Страница 48: ...inimum Model B C Adjust R4951 SEPARATION ADJ so that the signal level is minimum Fig E3 1 8 P4201 GND 4 pin FM VCO ADJUSTMENT Purpose To set VCO free run frequency Symptom of Misadjustment Even when stereophony is received only monaural sound will be output Test Point Pin 4 of P4201 TP9201 TV Stereo C B A Model A Hi Fi Audio C B A Model B C Adjustment R9206 TV Stereo C B A Model A Hi Fi Audio C B ...

Страница 49: ... 2 Press DISPLAY key on the remote control for collapse scan Note Before pressing DISPLAY key on the remote control for collapse scan select the desired control function and move the shaded area to the value for adjustments you will proceed Fig E5 7 How to release from Service Mode Press DISPLAY key again on the remote control EVR Electronic Variable Register Adjustment with the remote control Thi...

Страница 50: ...CUS CONTROL Flyback Transformer SCREEN CONTROL Flyback Transformer SUB BRIGHT EVR B DRIVE EVR R DRIVE EVR B CUT OFF EVR G CUT OFF EVR R CUT OFF EVR Specification Refer to descriptions below Input Video Input Jack Monoscope Pattern Signal Mode STOP Equipment Oscilloscope NTSC Video Pattern Generator 1 Supply a Monoscope Pattern Signal to the Video Input Jack 2 Connect the Oscilloscope to TP50 on th...

Страница 51: ... Point Pin 5 of PK5 TV Main C B A or TP49 CRT C B A Adjustment SUB COLOR EVR SUB TINT EVR Specification C 1 50 0 15Vp p Input Video Input Jack Rainbow Color Bar Mode STOP Equipment Oscilloscope NTSC Video Pattern Generator 1 Supply the Rainbow Color Bar signal to Video Input Jack 2 Select SUB BRIGHT in EVR adjustment mode Then after making a note of the original value adjust to the minimum C0 3 Co...

Страница 52: ...t FOCUS CONTROL Flyback Transformer SCREEN CONTROL Flyback Transformer SUB BRIGHT EVR G DRIVE EVR B DRIVE EVR R CUT OFF EVR G CUT OFF EVR B CUT OFF EVR Specification Refer to descriptions below Input Video Input Jack Monoscope Pattern Signal White Pattern Signal Mode STOP Equipment NTSC Video Pattern Generator White Pattern Generator Oscilloscope 1 Supply a Monoscope Pattern Signal to the Video In...

Страница 53: ...ly a White Pattern Signal to the Video Input Jack 11 Press DISPLAY key on the remote control again to return for full frame scan 12 Select G DRIVE and B DRIVE in EVR adjustment mode and adjust so that the entire screen is white 13 Select SUB BRIGHT in EVR adjustment mode Then after making a note of the original value adjust to the minimum C0 and while turning SUB BRIGHT value from minimum C0 up to...

Страница 54: ...mal Audio signal Service Test Point inhibit sensors defeat auto tracking function connect to 5V TP6009 5V Head SW Test Point Information Test Point with a Test Pin Test Point with a jumper wire across a hole in the P C B Test Point with no Test Pin TV Stereo C B A Model A Foil Side Foil Side TV STEREO SECTION FM MPX SECTION SEPARATION ADJ SEPARATION ADJ TP4202 TP9201 R4901 R9206 P4201 1 8 4 4 pin ...

Страница 55: ...ration II C B A Operation I C B A Component Side Component Side Component Side 1 5 PK5 PK2 5 pin CRT C B A TP50 TP47E TP49 Foil Side VOLUME UP VOLUME DOWN REW REVIEW PLAY REPEAT POWER FF CUE CH DOWN CH UP REC TIME STOP EJECT ...

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Страница 129: ...ts are replaced apply the recommended lubricants or adhesive for better maintenance of the unit Note Parts with no Ref No in EXPLODED VIEW are not supplied And some Ref No will be skipped Be sure to make your orders of replacement parts according to the parts list Mark Kind of Lubricant Availability Part Number Silicon Grease Available from Factory VFK1301 Spindle Oil Purchase from Local Supplier ...

Страница 130: ...or Unit Capstan Holder Unit and Stopper are supplied as a Capstan Rotor Kit only 2 Capstan Stator Unit Capstan Rotor Unit Capstan Holder Unit and Stopper are supplied as a Capstan Stator Kit only However IC2501 AN3845SC is available separately as a replacement part 3 When installing the IC2501 or Capstan Stator Unit be sure to apply Silicon Grease VFK1301 Refer to Capstan Stator Unit of Disassembl...

Страница 131: ...ant Availability Part Number Silicon Grease Available from Factory VFK1301 Spindle Oil Purchase from Local Supplier Grease Available from Factory VFKS0081 CASSETTE UP COMPARTMENT SECTION 69 4 As an ESD Countermeasure the spring should be installed in the proper position Please refer to Disassembly Assembly Procedure of Mechanical Section for more information 62 64 67 70 61 68 66 65 63 4 ...

Страница 132: ...SAFETY NOTICE COMPONENTS IDENTIFIED BY THE SIGN HAVE SPECIAL CHARACTERISTICS IMPORTANT FOR SAFETY WHEN REPLACING ANY OF THESE COMPONENTS USE ONLY THE SPECIFIED PARTS CHASSIS FRAME SECTION 1 To A in Chassis Frame Section 2 A To B in Chassis Frame Section 2 B 445 426 426 426 426 445 445 445 443 48 93 93 92 443 106 90 86 85 106 84 38 71 72 E9 446 446 446 446 446 73 101 457 433 457 174 E23 E42 E12 E47...

Страница 133: ...EMODULATOR UNIT has already been pre adjusted at the factory do not try to adjust the UHF VHF TUNER TV DEMODULATOR UNIT The UHF VHF TUNER TV DEMODULATOR UNIT replacement part is available as a complete assembly unit only To A in Chassis Frame Section 1 A 97 103 404 460 449 449 449 460 404 460 T551 5 A IC451 Q551 not supplied not supplied E17 E50 E53 E52 E44 E22 E18 E41 E45 E43 E48 E4 E57 E5 E30 E2...

Страница 134: ...e Infrared Remote Control Unit replacement part is available as a complete assembly unit only Do not try to disassemble the Infrared Remote Control Unit However the battery cover is available separately as a replacement part not supplied 56 118 121 122 133 134 125 126 123 100 6 ...

Страница 135: ...as already been pre adjusted at the factory do not try to adjust the UHF VHF TUNER TV DEMODULATOR UNIT The UHF VHF TUNER TV DEMODULATOR UNIT replacement part is available as a complete assembly unit only 5 The Infrared Remote Control Unit Ref No 123 replacement part is available as a complete assembly unit only Do not try to disassemble the Infrared Remote Control Unit However the battery cover is...

Страница 136: ...m rpeflk ibcqIpqvolcl j S hbf NPP qmaVTOMRM _lqqlj rpeflk ibcqIpqvolcl j S hbf NPQ qmaVTOMQV _lqqlj rpeflk ofdeqIpqvolcl j S hbf NRP qjjTTQNO i jmbo R hbf NRQ qjjTTQNP i jmbo R hbf NTQ qruTTNNR eb q pfkh prmmloq kdib Q hbf MECHANICAL REPLACEMENT PARTS LIST The complete Exploded Views are shown in this manual EXPLODED VIEWS 1 MECHANISM TOP SECTION 8 18 5 9 11 13 429 Part Name Remarks Part No Ref No...

Страница 137: ...o ELECTRICAL REPLACEMENT PARTS LIST E1 E2 E4 E5 E6 E7 E9 E11 E12 E16 E17 E18 PRINTED CIRCUIT BOARD ASSEMBLY bN sbmpPMRMb j fk K_K K bKpKaK oqi hbf E F bN sbmpPMRMa j fk K_K K bKpKaK oqi hbf E _I F bO sbmpQMNS N qs pqbobl K_K K bKpKaK oqi hbf E F bO sbmpQMOQ_ efcf rafl K_K K bKpKaK oqi hbf E _I F bQ sbmpUMOS N lmbo qflk f K_K K oqi hbf bR sbmpUMOT N lmbo qflk ff K_K K oqi hbf bV sbmpMQNOUcN raflLsf...

Страница 138: ...NLNMt Nh oPMPU boapOqgOOO OKOh oPMPV bogSdbvgOTOs jdc efm NLNMt OKTh E F oPMQM bogSdbvgNMPs jdc efm NLNMt NMh E F oPMQO bogSdbvgNMPs jdc efm NLNMt NMh oPMQP bogSdbvgOOOs jdc efm NLNMt OKOh E F oPMQQ bogSdbvgRSOs jdc efm NLNMt RKSh E F oPMQR boapOqgNUO NKUh E F oPMQS bogSdbvgRSOs jdc efm NLNMt RKSh E F oPMTT bogSdbvgNMNs jdc efm NLNMt NMM oPMUN bogSdbvgUOOs jdc efm NLNMt UKOh oPMUO bogSdbvgOOPs jdc...

Страница 139: ...h oQMPP bogSdbvgUONs jdc efm NLNMt UOM oQMPQ bogSdbvgNMPs jdc efm NLNMt NMh E _I F oQMPS bogSdbvgPPPs jdc efm NLNMt PPh E _I F oQMPT boapOqgOOP OOh E _I F oQNMN bogSdbvgRSPs jdc efm NLNMt RSh oQNMO bogSdbvgPVQs jdc efm NLNMt PVMh oQNMP bogSdbvgNRPs jdc efm NLNMt NRh oQNTN bogSdbvgNMPs jdc efm NLNMt NMh E F bogSdbvgNRPs jdc efm NLNMt NRh E _I F oRPMN bogSdbvgOONs jdc efm NLNMt OOM oRPMO bogSdbvgOOP...

Страница 140: ...apOqgOON OOM oSOMN bsk v MP_NR s of _ib NMMh E F bsjcSp MM_NR s of _ib NMMh E _I F oSOMO bogSdbvgNMQs jdc efm NLNMt NMMh oSOMP bogSdbvgPPPs jdc efm NLNMt PPh oSOMQ bogSdbvgNMOs jdc efm NLNMt Nh oSOMR bogSdbvgOQPs jdc efm NLNMt OQh oSOMS bogSdbvgPPPs jdc efm NLNMt PPh oSOMT bogSdbvgOOPs jdc efm NLNMt OOh oSOMU bogSdbvgUOPs jdc efm NLNMt UOh oSOMV bogSdbvgOOQs jdc efm NLNMt OOMh E F bogSdbvgNUQs jdc...

Страница 141: ...RMs MKMN PMRQ b rsNeNMPwck efm HUMBJOMB RMs MKMN E _I F PMRR b rsNbNMQwck efm HUMBJOMB ORs MKN PMRS b rsN OOQwck efm HUMBJOMB NSs MKOO PMRT b rsNbNMQwck efm HUMBJOMB ORs MKN PMRU b rsNeNMPwck efm HUMBJOMB RMs MKMN PMSM b b N h NMM bib qolivqf NSs NM PMUO b rsNeOTOh_k efm RMs OTMMm PMUP b rsNeNMPwck efm HUMBJOMB RMs MKMN PMVN b rsNeNMPwck efm HUMBJOMB RMs MKMN PMVO s vp o NMPkv bo jf HJPMB NSs MKMN...

Страница 142: ...Ps OO SOOO b rsNeOTOh_k efm RMs OTMMm SOOP b rsNeNMPh_k efm RMs MKMN SOOQ b b Mgh NMN bib qolivqf SKPs NMM SOOR bogSdbvMoMMs jdc efm NLNMt M SOOU s vp_o NMQju bo jf HJOMB NSs MKN SOPN b b N h NMM bib qolivqf NSs NM FILTERS ciQMMN sicpMMNQ COILS iNMMN bicNRkMMR ifkb cfiqbo MKR NUj lo bicNUaOVM ifkb cfiqbo MKR NUj lo iikOPMNO ifkb cfiqbo MKR NUj lo sinpMNRT ifkb cfiqbo MKR NUj lo sinpMNSS ifkb cfiqb...

Страница 143: ...SdbvgQTPs jdc efm NLNMt QTh oVPNP bogSdbvgQTPs jdc efm NLNMt QTh oVPNQ bogSdbvgQTPs jdc efm NLNMt QTh oVPNS bogSdbvgQTPs jdc efm NLNMt QTh oVPNT bogSdbvgQTPs jdc efm NLNMt QTh oVPNU bogSdbvgPVPs jdc efm NLNMt PVh oVPNV bogSdbvgNMPs jdc efm NLNMt NMh oVPOM bogSdbvgNMPs jdc efm NLNMt NMh oVPOQ bogSdbvgPPPs jdc efm NLNMt PPh oVPOS bogSdbvgPPPs jdc efm NLNMt PPh oVPOT boapOqgOON OOM CAPACITORS QPNS b ...

Страница 144: ...MMh hbf oVOMT bogSdbvgPPOs jdc efm NLNMt PKPh oVONN bogSdbvgQTOs jdc efm NLNMt QKTh CAPACITORS QOMN b n_NeQTPhc mlivbpqbo RMs MKMQT QOMO b n_NeQTPhc mlivbpqbo RMs MKMQT QOMP b b Mgh PPM bib qolivqf SKPs PP QOMQ b b Mgh PPM bib qolivqf SKPs PP QOMR b b Neh OoO bib qolivqf RMs OKO QOMS b b Neh OoO bib qolivqf RMs OKO QOMT b b Mgh NMN bib qolivqf SKPs NMM QOMU b b Mgh NMN bib qolivqf SKPs NMM QOMV b ...

Страница 145: ... ptfq e ptSPMU bsnm aMRo mrpe ptfq e ptSPNM bsnm aMRo mrpe ptfq e ptSPNN bsnm aMRo mrpe ptfq e ptSPNO bsnm aMRo mrpe ptfq e MISCELLANEOUS bPS sjupMRTR iba pm bo AUDIO VIDEO JACK C B A A INTEGRATED CIRCUITS f QRMN rm QRTM f I ifkb o lm jm DIODES aQRMN ewpR Nqa wbkbo RKNs hbf aQRMO ewpR Nqa wbkbo RKNs hbf aQRRO ewpV_Pqa wbkbo VKNs hbf aQRRP ewpV_Pqa wbkbo VKNs hbf RESISTORS oQRMN boapOqgRSO RKSh oQR...

Страница 146: ...SdbvgQTPs jdc efm NLNMt QTh oPRMO bogSdbvgRSMs jdc efm NLNMt RS oPRMP bogSdbvgRSMs jdc efm NLNMt RS oPRMQ bogSdbvgRSMs jdc efm NLNMt RS oPRMR bogSdbvgRSMs jdc efm NLNMt RS oPRMS bogSdbvgRSNs jdc efm NLNMt RSM oPRMT bogSdbvgRSNs jdc efm NLNMt RSM oQQMR bogSdbvgNMOs jdc efm NLNMt Nh oQQMS bogSdbvgNUMs jdc efm NLNMt NU oQQMT bogSdbvgRSNs jdc efm NLNMt RSM CAPACITORS OSMQ b rsNbNMQh_k efm ORs MKN OSMR...

Страница 147: ...F s vp_obQTPhu bo jf ORs MKMQT hbf E _I F QSMU b N jNMM_ bib qolivqf NSs NM QSMV b N jNMN_ bib qolivqf NSs NMM QSNM s vp_obQTPhu bo jf ORs MKMQT hbf QSNN b N jQTM_ bib qolivqf NSs QT QSNO b N jNMM_ bib qolivqf NSs NM QSNP b NejQoT_ bib qolivqf RMs QKT QSNQ s vp_obNMPhu bo jf ORs MKMN hbf E F s vp_obQTPhu bo jf ORs MKMQT hbf E _I F QSNR b N jNMM_ bib qolivqf NSs NM QSNS b NbjNMO_ bib qolivqf ORs NM...

Страница 148: ...O sobp OqhUOR plifa HJNMB NLOt UKOj lo sobp OqhUORq plifa HJNMB NLOt UKOj oTMMO boapOqgOTN OTM oTMPM boapOqgNUO NKUh oTMPN boapOqgNUO NKUh oTMPO boapOqgNUO NKUh CAPACITORS QMN b b NedbOoO bib qolivqf RMs OKO QMO b b N rQTN bib qolivqf NSs QTM QMU b NedbMNMh_ bib qolivqf RMs N hbf QMV b NsjNMN_ bib qolivqf PRs NMM QNP b n_NeNMQhc mlivbpqbo RMs MKN QNQ b b N rOOO bib qolivqf NSs OOMM QNU b NsjNMN_ b...

Страница 149: ...kPHcNMp p obt tLt peboIpqbbi bQV uvkPHcUp p obt tLt peboIpqbbi bRN qg SPNV crpb eliabo bRO qr TTRQO c_q pefbia mi qbIpqbbi hbf bRP qjjNSQUMJN i jmbo bUM irpSPMMO pr_ eb q pfkh mi qbIpqbbi hbf TV MAIN CHILD C B A TRANSISTORS nRMR Op TPPEqnF hbf nRMS Op TPPEqnF hbf nRMT Op VQR EqnF nRQN Op TPPEqnF hbf nRTN Op VQR EqnF DIODES aRMT j QOMMJe wbkbo OMs aRMU j NSR aRQN j NSR RESISTORS oRMN boapOqgUON UOM...

Страница 150: ...oqi bV sbmpMQNOMdN raflLsfabl g h K_K K oqi bV sbmpMQNOUcN raflLsfabl g h K_K K oqi bNN sbmpQMNQc pqbobl jm K_K K oqi bNN sbmpQMNQd pqbobl jm K_K K oqi bNO iomOPMMV qs mltbo K_K K oqi bNS iojSNMMRa qs j fk K_K K oqi bNS iojSNMMR qs j fk K_K K oqi bNT iomSPMMOk oq K_K K oqi bNU iomOPMNN qs j fk efia K_K K oqi bON sbnpMRVU qrkboIrecLsecLcj ko bOO icuSNMO loa tLmird bOO qpuTNRNJk loa tLmird bOP sgppP...

Страница 151: ...Printed in Japan ...

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