Panasonic SC-TM72DV Service Manual Download Page 96

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Summary of Contents for SC-TM72DV

Page 1: ... canal 6 1 kHz 10 DAT 90 W RCM por canal 6 1 kHz 10 DAT 90 W RCM por canal 6 100 Hz 10 DAT POTENCIA DE SALIDA AMPLIFICADOR SC TM72DV FRONTAL SURROUND CENTRAL SUBWOOFER AMPLIFICADOR POTENCIA DE SALIDA CONSUMO DE POTENCIA ALIMENTACION SENSIBILIDAD AUX RANGO DE SINTONIA AM RANGO DE SINTONIA FM DIMENSIONES BXHXL PESO SC TM72DV 4800 W P M P O 215 W 127 V ca 10 60 Hz 250 mV 520 1710 kHz paso de 10 kHz 8...

Page 2: ...HighMAT standard 13 Procedure for repairing the set 13 1 Distinguish the problem 13 1 1 Troubleshooting Guide Part 1 13 1 2 Troubleshooting Guide Part 2 13 1 3 Checking of VIDEO COMPONENT OUTPUT 13 2 Diagnosis of Optical Pick up Unit 14 Optical Pickup Self Diagnosis and Replacement Procedure 14 1 Self diagnosis 14 2 Cautions to Be Taken During Replacement of Optical Pickup and Spindle Motor 14 2 1...

Page 3: ...eplacement for optical pickup unit DVD mechanism 17 8 Procedure for removing CD loading mechanism 17 9 CR16 mechanism disassembly procedure 17 9 1 Gear for servicing information 17 9 2 Replacement for the disc tray 17 9 3 Replacement for the traverse deck 17 9 4 Disassembly for CD loading unit 17 10 CR16 MECHANISM ASSEMBLY PROCEDURE 17 11 Disassembly for Traverse Unit 17 12 Disassembly of Deck Mec...

Page 4: ... B 22 5 H Power Supply P C B 22 6 I Power Amp P C B N CD Loading P C B 22 7 J Power P C B 22 8 F Deck P C B G Deck Mechanism 22 9 K Voltage Selector P C B 22 10 M Voltage Selector P C B L AC Inlet P C B 23 Wiring Connection Diagram 24 Illustration of ICs Transistors and Diodes 25 Terminal Function of IC 25 1 IC6800 C2CBJG000460 System Microprocessor 26 Parts Location and Replacement Parts List 26 ...

Page 5: ...o ground DO NOT SHORT CIRCUIT DIRECTLY with a screwdriver blade for instance as this may destroy solid state devices After repairs are completed restore power gradually using a variac to avoid overcurrent Current consumption at AC 110 127 220 230V 50 60 Hz in NO SIGNAL at vol min in CD mode should be as below 2 1 Rework Process for Main Board Versión RJBX0405A 1 For Main PCB version 1 only RJBX040...

Page 6: ...rned on Sound stops during a performance The function of this circuitry is to prevent circuitry damage if for example the positive and negative speaker connection wires are shorted or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used If this occurs follow the procedure outlines below 1 Turn off the power 2 Determine the cause of the problem and ...

Page 7: ... following leakage current checks to prevent the customer from being exposed to shock hazards 4 1 1 Leakage Current Cold Check 4 1 2 Leakage Current Hot Check See Figure 1 4 1 1 Leakage Current Cold Check 1 Unplug the AC cord and connect a jumper between the two prongs on the plug 2 Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on...

Page 8: ...onductor component or semiconductorequiped assembly drain off any ESD on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging ESD wrist strap whichshould be removed for potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equiped with ES devices place the assembly on a conductive surf...

Page 9: ...e optical pickup could be destroyed due to static electricity as a potential difference is caused by electrostatic load discharged from clothes or human body Handling the parts carefully to avoid electrostatic destructionduring repair 7 1 Handling Optical Pickup 7 2 Replacing Precautions for Optical Pickup Unit 7 3 Grounding for Preventing Electrostatic Destruction 7 1 Handling Optical Pickup 1 Do...

Page 10: ... conductive sheet or ironboard where optical pickup is placed Refer to Fig 7 2 Note Keep your clothes away from optical pickup as wrist strap does not release the static electricity charged in clothes Fig 7 2 8 Precaution of Laser Diode Caution This product utilizes a laser diode with the unit turned ON invisible laser radiation is emitted from the pick up lens Wavelength 662 nm CD 785 nm DVD Maxi...

Page 11: ... THIS PRODUCT UTILIZES A LASER USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE _ Use of Caution Labels Inside of product ...

Page 12: ...9 Accessories Remote Control N2QAJB000110 FM Indoor Antenna RSA0007 L AM Indoor Antenna N1DAAA00001 Video Cable RJL1P016B15A ...

Page 13: ...10 Operation Procedures ...

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Page 15: ...11 Disc information ...

Page 16: ...ay of reading data when general consumer products such as DVD players and PCs are used and thus itis easy to operate for the user 12 2 Why use HighMAT Up to now there was no harmonized standard from playing digital content stored in CD ROM formats including CD R on consumer products like DVD players Therefore we used to have problems such as follow There was no common play list or attached informa...

Page 17: ... and consumer products Regardless of the types of consumer products such as DVD players portable CD players car stereos and micro computers a consistent way to pay for digital content will be created and it will make it easier to retrieve data You can also play digital content on the disc which was created in accordance with the HighMAT format with a conventional CD ROM player ...

Page 18: ...ize 3 MB Limitations regarding the number of files on the media etc Total number of audio files Maximum 450 Total number of still picture files Maximum 999 Total number of animation files Maximum 200 Total number of directories Maximum 400 Length of a file name Maximum 108 characters Unicode Total number of play lists Maximum 200 Number of contents in the playlist Maximum 900 Composition of HighMA...

Page 19: ...13 Procedure for repairing the set ...

Page 20: ...ouble View mechanical part if visual damage occurred Confirm the movement of mechanical parts assembly tray ass y loading mechanism ass y etc Diagnose if Optical Pickup Unit is faulty refer to diagnosis of Optical Pickup Unit If mechanism and OPU are OK it is P C B 13 1 1 Troubleshooting Guide Part 1 13 1 2 Troubleshooting Guide Part 2 13 1 3 Checking of VIDEO COMPONENT OUTPUT 13 1 Distinguish the...

Page 21: ...W4 W6 W7 If connection is good please proceed to checkfor Transformer Circuit Transformer Circuit 1 No power supply voltage to the Power Circuit from AC In Transformer no output voltage Power Line filter relay RL502 Replace of Transformer T501 if found faulty Replace of Power Relay if found faulty D950 open circuit 1 No supply voltage to Power Supply Circuit from Transformer Circuit VccL VccH VccL...

Page 22: ...ry 2 Bias frequency L1002 IC1004 Q1004 Q1005 problem Check level of bias frequency and oscillation Replace these components if necessary when level is below specification Deck Circuit 3 No supply voltage B M0 B See section on Panel Circuit 1 FL No Display Vp too low to power FL display FL Display Driver IC problem IC6803 See section on Power Circuit Replace IC6803 is faulty Panel Circuit 2 Error c...

Page 23: ...C2809 C9ZB00000377 Pin No Pin Name Pin Description 21 22 PYOUT1 PYOUT2 Signal Output Terminal for luminance signal progressive type 17 19 CrOUT CbOUT Signal Output Terminal for color difference signal 32 COUT Signal Output Terminal for chroma signal 29 30 MIXOUT1 MIXOUT2 Signal Ouptut Terminal for Y C Mix Signal 24 25 YOUT1 YOUT2 Signal Output Terminal for luminance signal interlaced type 3 12 14 ...

Page 24: ...n unit and 5 on remote controller Unit display jitter value on FL Confirmation 2 If servo is very unstable due to optical error and you cannot confirm jitter value clean the lens and check appearance of pick up unit cutting coil of actuator etc then check circuitry 14 Optical Pickup Self Diagnosis and Replacement Procedure 14 1 Self diagnosis 14 2 Cautions to Be Taken During Replacement of Optical...

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Page 26: ... the optical pickup Note If an anti static soldering iron is not available short circuit the terminal surface of the flexible cable and then the land using a clip or equivalent device Item Status and Key Function Display Checking DVD CD laser usage time With the unit stopped and no disc inserted press the button on the player and the buttonon the remote controller unit T1_xxxx_yyyy xxxx DVD yyyy C...

Page 27: ... 1 1 Automatic Display Function 15 1 2 Re Display 15 1 3 Description of Error Code 15 2 Memorized Error Codes 15 2 1 Activating Self Diagnosis Function and Displaying Method 15 2 2 Re Display 15 3 Mode Table 1 15 4 DVD CD Self Diagnosis Error Code Description 15 5 Error Codes Stored During No Play 15 6 Mode Table 2 15 7 Tray Lock Function 15 7 1 Setting 15 8 Things to Do After Repair ...

Page 28: ...eve the code turn on the power button so that the code F61 appears however is switched to time display after three seconds and the power is automatically turned off For F76 o The abnormalities is an output or the abnormalities in a power supply of POWER AMP 15 1 3 Description of Error Code 15 1 3 1 F61 State Condition When the power is turned on the unit is automatically turned off The power does ...

Page 29: ...retrieve them follow the procedure described the above Activating Self Diagnosis Function and Displaying Method 15 3 Mode Table 1 Following modes are available with combinations of the pressed buttons on the player and on the remote controller unit Player Remote Controller Unit Usage 0 Error code display Refer to the Item 15 4 DVD Error Code Description 5 Tilt adjustment Jitter 6 Region number and...

Page 30: ... out F880 Unsuitable task number When a message arrives from not existing task F890 A message is sent during AV task transmission During transmission of a message to AV task F891 Unable to transmit a message to AV task When transmission of a message to AV task starts F893 DVD Module problem Check for firmware version F894 EEPROM failure F895 Firmware compatibility problem Check for firm version fo...

Page 31: ... CD in EEPROM LDO 1 _013 2 _032 3 1 Laser current electricity measurement mode 2 DVD current electricity value 3 CDcurrent electricity value Values are shown in the decimal digit The above example indicates that the current electricity initialization value is 13mA at DVD laser and 32mA at CD laser when laser is turned on Automatically exits the mode after five seconds Measurement of DVD laser curr...

Page 32: ...troller unit Region display srrrxxyzzzz s Panecon model type rrr Panecon release number x Syscon generation 45 y Syscon model type zzz Syscon release number Automatically exits the mode after five seconds Firmware version display While the player is stopped and no disc is inserted press and hold down the button on the player and the number button 7 on theremote controller unit Firmware version dis...

Page 33: ...ds Reset spindle use time While the usage time 2 is displayed press and hold down the button on the player and the button on the remote controller unit Usage time 2 reset Spindle motor usage time T2_00000 Automatically exits the mode after five seconds Communication error display While the player is stopped and no disc is inserted press and hold down the button on the player and the MENU button on...

Page 34: ...message ___LOCKED_ appearswhen the function is activated Note The following buttons are invalid and the player displays ___LOCKED_ while the lock function mode is entered 15 8 Things to Do After Repair Follow the procedure described below after repair 1 While the power is on press the button to close the tray 2 Press the power button to turn off the power 3 Unplug the power cable Note It is prohib...

Page 35: ...urs replace FLASH ROM IC and restart version upgrade Version upgrade disc number is informed when ordered 16 3 Firmware Version Upgrade Process by Using Disc and Recovery Process Recovery process Firmware version upgrade process Both of the above procedures automatically start when the recovery disc is replayed General CD R disc allows version upgrade process and recovery process making version up...

Page 36: ...letion appears on the screen Remove the disc b Follow the instruction appearing on the screen and remove the disc 6 Turn off the power 16 5 Total Usage Time Display 1 Details of Operation Display Keys for Operation Laser usage time While the player is stopped and no disc is inserted press both the button on the player and the button on the remote controller unit Spindle motor usage time While the ...

Page 37: ... B Power P C B Power Amp P C B Power Supply P C B Transformer P C B Voltage Selector P C B 17 5 1 Disassembly of Power Amp P C B 17 5 2 Disassembly of Power P C B 17 5 3 Disassembly of Power Supply P C B 17 5 4 Disassembly of Transformer P C B Voltage Selector P C B 17 6 Replacement for traverse deck 17 7 Replacement for optical pickup unit DVD mechanism 17 8 Procedure for removing CD loading mech...

Page 38: ...nternal inspection when carrying out the servicing To assemble the unit reverse the steps shown in the chart as below 17 2 Disassembly of Top Cabinet Step 1 Remove 3 screws each side and 5 screws at rear panel Step 2 Lift up both sides of cabinet ass y push the cabinet ass y toward the rear and remove the top cabinet ...

Page 39: ...Follow the Step 1 Step 2 of Item 17 2 Step 1 Detach FFC Boards CN2811 CN2815 Step 2 Remove 1 screw at rear cabinet as show below Step 3 Lift the DVD changer unit upwards Step 4 Release the claws on both ends and remove the DVD changer unit ...

Page 40: ... the DVD Module P C B 17 3 1 Disassembly of the DVD Module P C B Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Step 1 Remove 2 screws Step 2 Remove the mechanism unit cover Step 3 Lay the unit ...

Page 41: ...ssembly for Panel P C B MIC P C B Tact Switch P C B Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Step 1 Disconnect FFC board CN2811 CN2815 CN5806 Step 2 Lay the unit as shown below ...

Page 42: ... Remove 2 screws at the bottom chassis Step 4 Release the 2 claws and then draw the front panel ass y forward Disassembly of Panel P C B Mic P C B Step 5 Remove 7 screws Step 6 Detach FFC board CP6803 CP6800 ...

Page 43: ...Step 7 Release 3 catches Step 8 Remove 2 screws Step 9 Lift up Mic P C B to remove it Disassembly of Tact Switch P C B Step 10 Remove the volume knob ...

Page 44: ...em 17 4 Step 1 Remove 2 screws Step 2 Lift the spring sideward Step 3 Remove Lid Note Do not misplace the spring 17 5 Disassembly of Main P C B Power P C B Power Amp P C B Power Supply P C B Transformer P C B Voltage Selector P C B Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Disassembly of Main P C B Step 1 Remove the 12 screws Step 2 Detach CN2808 CN2809 Fan Step 3...

Page 45: ...mbly of Power P C B 17 5 3 Disassembly of Power Supply P C B 17 5 4 Disassembly of Transformer P C B Voltage Selector P C B 17 5 1 Disassembly of Power Amp P C B Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Follow the Step 1 Step 4 of Item 17 4 Follow the Step 1 Step 3 of Item 17 5 Step 1 Remove the 2 screws ...

Page 46: ...ws 17 5 2 Disassembly of Power P C B Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Follow the Step 1 Step 4 of Item 17 4 Follow the Step 1 Step 3 of Item 17 5 Step 1 Detach cable CN953 CN950 CN951 Step 2 Detach cable CN5807 CN5810 ...

Page 47: ...Step 3 Lift up Power P C B as arrow shown 17 5 3 Disassembly of Power Supply P C B Step 1 Remove the 2 screws at heat sink Step 2 Remove the 2 screws ...

Page 48: ...ment of Power Amp IC Step 1 Remove 2 screws fixed to the Power Amplifier IC Step 2 Remove 2 screws fixed to the Power Amplifier IC and Voltage Regulator Step 3 Break the joint with a metal cutter as shown below ...

Page 49: ...Step 4 Unsolder the terminals of Power Amp IC replace the component ...

Page 50: ... Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Step 1 Remove 4 screws Step 2 Disconnect connector CN950 CN951 17 6 Replacement for traverse deck Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Follow the Step 1 Step 3 of Item 17 3 1 Step 1 Move ribs at both sides to the arrow direction The verticval rack R slides and the groove opens ...

Page 51: ...Step 2 Remove CD traverse deck rotating to the arrow direction ...

Page 52: ...p unit DVD mechanism Follow the Step 1 Step 2 of Item 17 2 Follow the Step 1 Step 4 of Item 17 3 Follow the Step 1 Step 3 of Item 16 3 1 Follow the Step 1 Step 2 of Item 17 6 Step 1 Pull out FFC Step 2 Widening the catch push the pin in ...

Page 53: ...Step 3 Remove 4 pins Step 4 Remove the traverse deck Note As floating springs 4 pieces come off at the same time be careful not to lose them ...

Page 54: ...r Step 7 Pull FFC out from the connector Note Insert a short pin into FFC of the optical pickup See Notice on handling of the optical pickup Step 8 Rotate the traverse deck B to the arrow direction and shift the optical pickup to the furthest backward ...

Page 55: ...Step 10 Remove the catch of the drive rack and take out the drive rack ...

Page 56: ...Step 11 Place the convex part of an optical pickup to the concave part of a traverse base then take out the optical pickup ...

Page 57: ... for the traverse deck 17 9 4 Disassembly for CD loading unit 17 9 1 Gear for servicing information This unit has a gear which used for checking items open close of disc tray up down operation of traverse unit by manually when servicing For gear information that is described on the items for disassembly procedures For preparation of gear for servicing perform the procedures as follows In case of r...

Page 58: ...17 9 2 Replacement for the disc tray ...

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Page 62: ...17 9 3 Replacement for the traverse deck Follow the Step 1 Step 10 of item 17 9 2 ...

Page 63: ...17 9 4 Disassembly for CD loading unit Follow the Step 1 Step 10 of item 17 9 2 Follow the Step 1 Step 3 of item 17 9 3 ...

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Page 72: ...ed greases and or oil must be applied when some specific parts are changed 1 Floil grease VFK1298 The floil grease must be applied to tray tray L and tray R 2 Hanarl oil VFK1700 The hanarl oil must be applied to any parts with grease other than the said parts ...

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Page 105: ...17 11 Disassembly for Traverse Unit Follow the Step 1 Step 10 of item 17 9 Follow the Step 1 Step 3 of item 17 10 ...

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Page 109: ...17 12 Disassembly of Deck Mechanism Unit Follow the Step 1 Step 2 of Item 18 2 Follow the Step 1 Step 4 of Item 18 3 Follow the Step 1 Step 3 of Item 18 3 1 Step 1 Remove the connector ...

Page 110: ...ve the 2 claws and then draw the front panel ass y Step 4 Detach FFC Board CN601 CN602 Step 5 Detach flat cable wire CN1001 Step 6 Push the lever upward and then open the cassette lid ass y For DECK1 and DECK2 Step 7 Remove the 5 screw ...

Page 111: ...rrow 1 and then remove it in the direction of arrow 2 Disassembly of Deck P C B Step 9 Unsolder the motor terminals Step 10 Remove 4 screws Step 11 Remove Deck P C B The mechanism as shown below is for DECK1 For the one of DECK 2 perform the same procedures ...

Page 112: ... Disassembly of pinch roller ass y head block Step 12 Release the 2 claws and then remove the pinch roller R F Step 13 Release ther 2 claws and then remove the head connector ...

Page 113: ...or ass y capstan belt A capstan belt B and winding belt 17 12 1 Replacement for the CD motor ass y capstan belt A capstan belt B and winding belt Step 1 Release the 2 claws and then remove the head connector Step 2 Remove 6 screws Step 3 Remove the sub chassis ...

Page 114: ...tep 5 Remove the flywheel R Step 6 Release the claw of tape side and then remove the winding lever and spring Step 7 Remove the flywheel F Installation of the belt Step 1 The boss and marking should be positioned horizontally ...

Page 115: ...Step 2 Put the winding belt on the pulley temporarily Step 3 Install the flywheel F Step 4 Put the winding belt on the flywheel F ...

Page 116: ...Step 5 Install the winding lever and spring while pressing the winding arm in the direction of arrow Step 6 Install the flywheel R ...

Page 117: ...Step 7 Put the capstan belt A temporarily as shown below ...

Page 118: ...Step 8 Put the capstan belt B on the motor ass y pulley Step 9 Install the sub chassis to the mechanism and then tighten screws ...

Page 119: ...Step 10 Remove 3 screws Step 11 Put the capstan belt B as shown below Step 12 Put the capstan belt A on the motor ass y pulley ...

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Page 121: ...easure for tape trouble Follow the Step 1 Step 2 of Item 17 2 Step 1 If a cassette tape cannot be removed from the deck since the tape is caught by the capstan or pinch roller uring playback or recording rotate the flywheel F in the direction of the arrow to remove the tape ...

Page 122: ... C B and AC Inlet P C B 18 3 Checking the Panel P C B Tact Switch P C B Mic P C B Deck P C B Deck Mechanism P C B 18 1 Checking Procedure Note For the disassembling procedure see Section 17 18 2 Checking the Main P C B Power P C B Power Supply P C B Power Amp P C B Transformer P C B Voltage Selector P C B and AC Inlet P C B 1 Remove Top Cabinet and Rear Panel 2 Remove DVD Mechanism Unit 3 Connect ...

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Page 124: ...C B 1 Remove Top Cabinet and Rear Panel 2 Remove DVD Mechanism Unit 3 Remove volume knob at front panel 4 Remove Panel P C B Mic P C B Tact Switch P C B 5 Remove Deck Mechanism P C B 6 Use the extension cable REEX0310 10 Pins to reconnect CP6800 Panel P C B and CN971 Deck Mechanism P C B ...

Page 125: ... 3 Bias and Erase Voltage Check 19 1 4 Bias Frequency Adjustment Deck 1 2 19 1 1 Head Azimuth Adjustment Deck 1 2 Caution Please replace both azimuth adjustment screw and springs simultaneously when readjusting the head azimuth shown in Fig 2 Even if you wish to readjust the head azimuth without replacing the acrews and springs a fine adjustment to theazimuth screw and spring Please remove the scr...

Page 126: ...pe QZZCWAT to DECK 2 and playback FWD side the middle portion of it 3 Adjust Motor VR DECK 2 for the output value shown below Adjustment target 2940 3060 Hz NORMAL speed 4 After alignment assure that the output frequency of the DECK 1 FWD are within 60 Hz of the value of the output frequency of DECK 2 FWD ...

Page 127: ... output is within the standard value Bias voltage for Deck 2 14 4mV Normal Erase voltage for Deck 2 80mV Normal Fig 2 19 1 4 Bias Frequency Adjustment Deck 1 2 1 Set the unit to AUX position 2 Insert the Normal blank tape QZZCRA into DECK 2 and set the unit to REC mode use REC STOP key 3 Adjust L1002 so that the output frequency is within the standard value Standard Value 97 8 kHz Fig 4 ...

Page 128: ...Alignment 19 2 2 AM RF Adjustment 19 2 1 AM IF Alignment 1 Connect the instrument as shown in Fig 5 2 Set the unit to AM mode 3 Apply signal as shown in Fig 5 from AM SG 4 Adjust Z102 so that the output frequency is maximized in Fig 6 ...

Page 129: ... OSC so that the EVM AC is maximized 6 Set AM SG to 600Hz 7 Receive 600Hz in the unit 8 Adjust Z101 ANT so that the EVM SG is maximized 9 Set AM SG to 520kHz 10 Receive 520kHz in the unit 11 Adjust Z101 OSC so that the EVM DC value is with 1 1 0 5V Fig 7 19 3 Alignment Points 19 3 1 Cassette Deck Section 19 3 2 Adjustment Point 19 3 1 Cassette Deck Section ...

Page 130: ...19 3 2 Adjustment Point ...

Page 131: ...20 Block Diagram ...

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