Hitachi DV-PF33U Скачать руководство пользователя | Manualshive

Страница: 93 / 107

background image

1

1

KEY 2

KEY SWITCH

CL507

CN651

FUNCTION CBA

IC571

(FIP DRIVER)

DISP-DATA
DISP-CLK
DISP-ENA

DISP-DATA

DISP-CLK

DISP-ENA

FP502

LED CLOCK

G1
G2
G3
G4

A
B

H

I

J

23
22
21

28

2
1

68
69
70

20

14
16
17

7
8

6-5 Power Supply Block Diagram

28

A V

AC1001

F1001
1A 250V

LINE

FILTER

L1001

D1001 - D1004

BRIDGE

RECTIFIER

2

4

Q1001

Q1003

Q1008

8

7

1

2

3

4

IC1001

ERROR
VOLTAGE DET

HOT

T001

Q055

Q052

Q057

Q056

JUNCTION
CBA

POWER SUPPLY CBA

MAIN CBA

IC1006

(SHUNT REGULATOR)

REG

F

HOT CIRCUIT. BE CAREFUL.

20

19

18

17

16

15

14

13

12

11

Q1006

Q1005

Q1011

1 EV+1.5V
2 EV+1.5V
3 EV+1.5V
4 EV+3.3V
5 EV+3.3V

13 DVD-P-ON+5V
14 EV+9V
15 EV+9V
17

DVD-P-ON+3.3V

19 PWRCON

IC1004

+3.3V REG.

IC1002

+1.5V REG.

CN1001

Q1004

P-ON-L
P-ON+5V

DVD-P-ON+12V

-FL

P-DOWN-L

AL+15V

F2

F1

EV+3.3V

DVD-P-ON+3.3V

AL+33V

P-ON+9V

AL-24V

AL+12V

TIMER+5V

AL+5V

DVD-P-ON+5V

NOTE :

The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.
ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES
D'INCELE N'UTILISER QUE DES FUSIBLE DE MEMO TYPE.

RISK OF FIRE

-REPLACE FUSE AS MARKED.

"This symbol means fast operating fuse."

"Ce symbole reprèsente un fusible à fusion rapide."

A V

F

1

1

AL+44V

2

2

P-DOWN-L

3

3

AL+12V

5

5

AL+5V

7

7

AL-24V

1
2
3
5
7

1

1

AL+2.35V

3

3

AL+4V

6

6

F1

7

7

F2

CL1004 CN1005

1
2
3
5
7

9

11
14
15

9

11
14
15

CN1003

CN1005

CN1003

CL1002

CL1006

CL1007

TO DVD MAIN
CBA UNIT
CN401

CAUTION !

Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F001) is blown, check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.

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Содержание DV-PF33U

Страница 1: ...NUAL Digital Media Division Tokai DVD PLAYER VIDEO CASSETTE RECORDER SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT TK No 9302E DV PF73U DV PF73U C DV PF33U February 2003 VCR Mechanism Error Codes ...

Страница 2: ...5 1 5 1 CABINET DISASSEMBLY INSTRUCTIONS 5 1 5 1 1 Disassembly Flowchart 5 1 5 1 2 Disassembly Method 5 1 5 2 DISASSEMBLY ASSEMBLY PROCEDURES OF DECK MECHANISM 5 6 5 3 ALIGNMENT PROCEDURES OF MECHANISM 5 14 6 EXPLODEDS VIEWS AND PARTS LIST 6 1 6 1 EXPLODED VIEWS 6 1 6 1 1 Cabinet Section 6 1 6 1 2 Deck Mechanism View 1 Section 6 2 6 1 3 Deck Mechanism View 2 Section 6 2 6 1 4 Deck Mechanism View 3...

Страница 3: ... least 30cm away from the pickup lens when the diode is turned on Do not look directly at the laser beam Caution Use of controls and adjustments or doing procedures other than those specified herein may result in hazardous radiation exposure Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin Location Inside Top of DVD mechanism LASER RADIATION WHE...

Страница 4: ...Note especially 1 Wires covered with PVC tubing 2 Double insulated wires 3 High voltage leads D Use specified insulating materials for hazardous live parts Note especially 1 Insulation tape 2 PVC tubing 3 Spacers 4 Insulators for transistors E When replacing AC primary side components transformers power cord etc wrap ends of wires securely about the terminals before solder ing F Observe that the w...

Страница 5: ...and externally exposed accessible parts RF termi nals antenna terminals video and audio input and output terminals microphone jacks earphone jacks etc is lower than or equal to the specified value in the table below Measuring Method Power ON Insert load Z between B earth ground power cord plug prongs and exposed accessible parts Use an AC voltmeter to measure across the terminals of load Z See Fig...

Страница 6: ...2 Remove the flat pack IC with tweezers while apply ing the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 1 Release the flat pack IC from the CBA using twee zers Fig S 1 6 Caution 1 Do not supply hot air to the chip parts around the f...

Страница 7: ... of the flat pack IC you can remove it easily Fig S 1 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 3 While heating the pins using a fine tip soldering iron or hot air blower pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig S 1 5 4 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire...

Страница 8: ...due to a potential difference caused by electro static charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1MΩ that is prop erly grounded to remove any static electricity that may be charged on the body 2 Ground for Workbench 4 Be sure to place a conductive sheet or copper plate with proper grounding 1MΩ on the workbench or other surface where the semi c...

Страница 9: ...r output VHF Channel 3 or 4 Power source 120 V AC 10 60 Hz 0 5 Power consumption 24 W standby 7 0 W Operating temperature 41 F 5 C to 104 F40 C Dimensions W 17 1 8 435 mm H 3 7 8 99 mm D 8 5 8 218 mm Weight 8 1 lbs 3 7 kg Designs and specifications are subject to change without notice 2 1 SPECIFICATIONS GENERAL INFORMATION 2 ...

Страница 10: ...se Reduction Circuit O New Synchronize Circuit Picture Control Video Audio Input Rear 1 1 IN1 Video Audio Input Front 1 1 IN2 Video Audio Output Rear 1 1 OUT1 Stereo CM Skip Feature O Auto Clock Feature O Number of Timer Programming 8 Program year 7 Program year Self Diagnosis Function O 4 Modes Back up Time 30 s 60 s SQPB O Surge Absorber O Auto Power Off Feature O Local Broadcast Setting O Multi...

Страница 11: ...xial O O O Dolby Digital 5 1 ch Decode DTS Digital Out O Virtual Surround O Dynamic Range Compression Dolby Digital O DVD Audio Power on sound Search Speed 2 to 100 FORWARD REWIND DVD 2 8 50 100 CD 16 2 to 60 FORWARD REWIND DVD 2 8 30 60 CD 16 Slow Speed 1 16 1 8 1 2 FORWARD REWIND 1 16 1 8 1 2 FORWARD only IP Search Smooth 2x Play O 2x Play with Audio Step Forward Reverse O O O Still Picture Sele...

Страница 12: ...to start a recording Press repeatedly to start a Instant Recording Timer 14 REC Light Lights up during recording 15 TIMER Light This light glows when the DVD VCR is in standby mode or off for a timer recording or during a Instant Recording Timer It flashes if TIMER is pressed for a timer recording but there is no tape in the DVD VCR It flashes when all timer recordings or Instant Recording Timer a...

Страница 13: ...k 38 SKIP Buttons DVD mode Press to skip Chapters or Tracks 39 STOP Button DVD mode Press to stop the disc motion VCR mode Press to stop the tape motion 40 h Button DVD mode Press to view the DVD picture in fast reverse motion or to reverse playback of an Audio CD VCR mode Press to rewind the tape or to view the picture rapidly in reverse during the playback mode Rewind Search 41 TV POWER Button T...

Страница 14: ...te control to operate the VCR and its features press VCR on the remote control before pressing other VCR Verify that the green VCR OUTPUT Light is on DISPLAY DISPLAYS DURING OPERATION Stays on when the inserted disc is being played back Lights up when a CD is inserted into the tray Lights up when a DVD is inserted into the tray Lights up when the inserted disc comes to a pause Stays on when the A ...

Страница 15: ...television 6 COAXIAL Jack DVD only Connect an optional coaxial digital audio cable here and to the Coaxial Digital Audio In jack of a decoder or audio receiver 7 DVD AUDIO OUT Jacks DVD only Connect the supplied audio cables here and to the Audio In jacks of a television or other audio equipment DVD only 8 S VIDEO OUT Jack DVD only Connect an optional S Video cable here and to the S Video In jack ...

Страница 16: ...Press once to start a recording Press repeatedly to start a Instant Recording Timer 14 REC Light Lights up during recording 15 TIMER Light This light glows when the DVD VCR is in standby mode or off for a timer recording or during a Instant Recording Timer It flashes if TIMER is pressed for a timer recording but there is no tape in the DVD VCR It flashes when all timer recordings or Instant Record...

Страница 17: ...ively control the TV volume DVD mode 44 p o B s Buttons Move the cursor and determines its position VCR mode 44 p oButtons Press to enter digits when setting program For example setting clock or timer program Press to select the setting modes from the on screen menu BButton When setting program For example setting clock or timer program press to determine your selection and proceed to the next ste...

Страница 18: ... remote control before press ing other VCR Verify that the green VCR OUTPUT Light is on DISPLAY DISPLAYS DURING OPERATION Stays on when the inserted disc is being played back Lights up when a CD is inserted into the tray Lights up when a DVD is inserted into the tray Lights up when the inserted disc comes to a pause Stays on when the A B repeat function is on Stays on when the repeat function is o...

Страница 19: ...here 4 AC Power Cord Connect to a standard AC outlet to supply power to the DVD VCR 5 COMPONENT VIDEO OUT Jacks DVD only Connect optional component video cables here and to the component Video In jacks of a television 6 COAXIAL Jack DVD only Connect an optional coaxial digital audio cable here and to the Coaxial Digital Audio In jack of a decoder or audio receiver 7 DVD AUDIO OUT Jacks DVD only Co...

Страница 20: ... 3 When the output voltage fluctuates No Yes Does the secondary side photo coupler circuit operate normally Check the circuit and service it if defective IC1001 D1012 D1024 Check the circuit and service it if defective IC1001 IC1006 D1018 FLOW CHART NO 4 When buzz sound can be heard in the vicinity of power circuit Check if there is short circuit on the rectifying diode and the circuit in each rec...

Страница 21: ...utted normally Is 5V voltage supplied to Pin 1 of IC1004 Replace IC1004 Is the H pulse approximately 5V inputted into the base of Q1011 Replace Q1011 See FLOW CHART NO 8 P ON 12V is not outputted Yes No No Is approximately 2 35V voltage supplied to Pin 1 of IC1002 FLOW CHART NO 10 EV 1 5V is not outputted Replace IC1002 Check D1020 C1014 C1015 and their periphery and service it if detective FLOW C...

Страница 22: ... 26 of IC571 Are the filament voltage applied between 1 2 and 34 35 of the fluorescent display tube Also negative voltage applied between these pins and GND Replace the fluorescent display tube Check the EV 3 3V line and service it if detective Check the FL 28V line and service it if detective Check R572 IC571 and their periphery and service it if detective Check the power circuit D1016 D1017 R104...

Страница 23: ...ne between the RM2001 remote control receiver and Pin 22 of CN1001 and service it if detective Is the L pulse sent out from Pin 1 terminal of the RM2001 remote control receiver when the remote control unit is activated Is the L pulse signal supplied to Pin 22 of CN1001 Replace the DVD Main CBA Yes Yes Replace DVD Main CBA Yes Yes Is 5V voltage supplied to Pin 3 terminal of the RM2001 remote contro...

Страница 24: ...the DVD Main CBA Original DVD Main CBA is poor Replace the DVD Mechanism No improvement can be found No FLOW CHART NO 7 The No Disc indication When the laser beam does not light Yes Replace the DVD Main CBA Original DVD Main CBA is poor Replace the DVD Mechanism No improvement can be found No FLOW CHART NO 8 Both picture and sound do not operate normally Yes Replace the DVD Main CBA Original DVD M...

Страница 25: ...601 5PIN IC1402 9PIN Cb CN1601 3PIN IC1402 11PIN Cr Are the video signals shown above inputted into each pin of IC1402 Are the video signals outputted to each pin of IC1402 Are the video signals outputted to the specific output terminal Are the component video signals outputted to the VIDEO OUT terminal JK1403 Are the luminance signals outputted to the S OUT terminal JK1401 Are the chroma signals ...

Страница 26: ...ective Check each line between each pin of CN1601 and each pin of IC1201 on Main CBA and service it if detective CN1601 13PIN IC1201 2PIN AUDIO L CN1601 15PIN IC1201 6PIN AUDIO R Are the analog audio signals inputted to each pin of IC1201 Are the analog audio signals inputted to each pin of IC1201 Are the audio signals outputted to the specific output terminal Are the audio signals outputted to th...

Страница 27: ...erminal voltage of IC501 66 67 KEY 1 IC501 67 KEY 2 IC501 66 V Replace the RM2001 remote control receiver Or replace remote control unit Check the line between the RM2001 remote control receiver and the Pin 5 of IC501 and service it if detective Replace IC501 Is the L pulse sent out from Pin 1 terminal of the RM2001 remote control receiver when the remote control unit is activated Is the L pulse s...

Страница 28: ...if detective While the Takeup Reel is rotating is the reel pulse signal inputted to Pin 3 of IC501 While the reel pulse signal is inputting is L pulse inputted to Pin 21 of IC501 Is the specified voltage approximately 13V outputted to the terminal of the Lading Motor Unit When loading a cassette tape does the LD SW operate normally When loading a cassette tape is the specified voltage approximatel...

Страница 29: ...f IC501 and service it if detective Check the AL 12V line and service it if detective Check the AL 12V line and service it if detective Replace IC501 No No No No No No No No No No No Yes Yes Yes Is 5V voltage supplied to Pin 2 of CL502 Is the drum PG FG signal inputted to Pin 47 of IC501 Is the drum PG FG signal inputted to Pin 47 of IC501 Is 12V voltage supplied at Pin 1 11 of CL502 Is the RF SW ...

Страница 30: ...e supplied to Pin 21 of IC301 Is voltage with each inputted signal supplied to Pin 71 of IC301 Check the P ON 5V line and service it if detective Check Q760 and the OUTPUT SELECT line and service it if detective No Check the AL 12V line R779 D702 and the AL 30V line R777 R778 and service it if detective Check the line between Pin 34 of IC301 and Pin 41 of IC501 and service it if detective Check th...

Страница 31: ...t terminal Tuner audio signal Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No No No No No Check the line between Pin 57 of IC451 and Pin 15 of tuner and service it if detective Check the line between Pins 37 38 of IC451 and Pins 12 13 of IC501 and service it if detective Check the line between Pin 49 of IC451 and Pin 7 of IC501 and service it if detective Check the line betw...

Страница 32: ...signal outputted to Pin 7 of IC301 Yes Yes Replace AC head Yes Yes No No No No Check the Hi Fi H SW line between Pin 39 of IC451 and Pin 25 of IC501 and service it if detective Check the line between Pin 6 of IC451 and Pin 76 78 80 of IC301 and service it if detective Check the Bias oscillation circuit Q421 Q422 Q423 Q424 Q425 and service it if detective Replace IC451 Replace IC451 No Replace IC30...

Страница 33: ...t on the surface of AC head Is the audio signal supplied to Pin 100 of IC301 Replace IC301 Is the audio signal outputted to Pin 96 of IC301 Check the line between Pin 96 of IC301 and Pin 4 of IC451 and service it if detective Service and replace poor parts Readjust the height of the AC head Clean the surface of AC head Yes Yes Yes Is the height of AC head appropriate Yes Replace the AC head Yes No...

Страница 34: ...f At this time no buttons are available 6 Unplug the AC cord from the AC outlet Then plug it again 7 Turn the power on by pressing the power button and the tray will close 8 Press 1 2 3 4 and DISPLAY buttons on the remote control unit in that order Fig g appears on the screen 9 Press 3 button on the remote control unit Fig h appears on the screen F W Version Up Mode Please insert a DISC for F W Ve...

Страница 35: ...s on the remote control unit in that order The B E version appears on the VFD and the F E and B E versions appear on TV screen 3 Turn the power off to reset the unit Note If the firmware has been changed etc we will use Service News etc to report on how to obtain new firmware data and create an upgraded disc Fig h model Ver Region TEST 3 EEPROM CLEAR EEPROM CLEAR OK EXIT POWER RETURN ...

Страница 36: ...el only h Hours Check I Change Deck Periodic Service Schedule Ref No Part Name 1 000 h 2 000 h 3 000 h 4 000 h B2 Cylinder Assembly I I B3 Loading Motor Assembly I B8 Pulley Assembly I I B587 Tension Lever Assembly I I B31 AC Head Assembly I B573 B574 Reel SP D2 Reel TU D2 I B37 Capstan Motor I I B52 Cap Belt I I B73 FE Head I B133 B134 Idler Gear Idler Arm I I B410 Pinch Arm Assembly I I B414 M B...

Страница 37: ...hard material but since it is very thin avoid cleaning it vertically 2 Wait for the cleaned part to dry thoroughly before operating the unit 3 Do not reuse a stained head cleaning stick or a stained chamois cloth Cleaning of Audio Control Head Clean the head with a cotton swab Procedure 1 Remove the top cabinet 2 Dip the cotton swab in 90 Isopropyl alcohol and clean the audio control head Be caref...

Страница 38: ...ape into the Deck Mechanism Assembly and press the PLAY button The tape will be loaded into the Deck Mechanism Assembly Make sure the power is on TP502 SENSOR INHIBITION to GND This will stop the function of Tape Start Sensor Tape End Sen sor and Reel Sensors If these TPs are connected before plugging in the unit the function of the sensors will stay valid See Fig 1 Note Because the Tape End Senso...

Страница 39: ...wdriver 4 2 FIXTURE AND TAPE FOR ADJUSTMENT 4 2 1 How To Use The Fixtures And Tape Item No Name Part No Adjustment 1 Alignment Tape 7099046 I Head Switching Point I Tape Interchangeability Alignment 2 Guide Roller Adj Screwdriver 7099028 I Guide Roller 3 Flat Screwdriver Purchase Locally I X Value Alignment ...

Страница 40: ...loscope Dual trace with 10 1 probe V Range 0 001 50V Div F Range DC AC 20MHz 2 Alignment Tape MH 1 4 3 2 Head Switching Position Adjustment Purpose To determine the Head Switching point during playback Symptom of Misadjustment May cause Head Switching noise or vertical jitter in the picture Reference Notes Playback the Alignment tape and adjust VR501 so that the V sync front edge of the CH1 video ...

Страница 41: ... that the Moving guide preparations are in the Eject Position 4 Turn the LDG Belt in the appropriate direction shown in Fig M1 until the Moving guide prepara tions come to the Eject Position Stop turning when the preparations begin clicking or can not be moved further However the tape will be left wound around the cylinder 5 Turn the LDG Belt in the appropriate direction con tinuously and the cass...

Страница 42: ...ue and envelope Not good Do the final tape traveling test to see that the tape runs normally in play mode with out creasing or slacking Completion Not good OK OK OK Not good Not good OK Flowchart of Alignment for tape traveling 1 A 1 A 1 B 1 C 1 C 1 D 1 D 1 B 1 C 1 B 1 C 1 A 4 4 2 Tape Interchangeability Alignment Note To do these alignment procedures make sure that the Tracking Control Circuit is...

Страница 43: ...al Position of the Audio Control Erase Head Symptom of Misalignment If the Horizontal Position of the Audio Control Erase Head is not properly aligned maximum envelope can not be obtained at the Neutral position of the Tracking Control Circuit 1 Connect the oscilloscope to TP301 C PB and TP513 CTL on the Main CBA Use TP302 RF SW as a trigger 2 Playback the Gray Scale of the Alignment Tape MH 1 and...

Страница 44: ...de Roller 2 Refer to Fig M3 so that the waveform looks like the one shown in Fig M9 4 If the envelope is as shown in Fig M8 adjust the height of Guide Roller 3 Refer to Fig M3 so that the waveform looks like the one shown in Fig M9 5 When Guide Rollers 2 and 3 Refer to Fig M3 are aligned properly there is no envelope drop either at the beginning or end of track as shown in Fig M9 Note Upon complet...

Страница 45: ...o PART REMOVAL Fig No REMOVE UNHOOK UNLOCK RELEASE UNPLUG DESOLDER Note 1 Top Cover D1 7 S 1 2 Front Assembly D2 S 3 7 L 1 1 1 1 1 2 3 Top Bracket D2 4 S 2 4 DVD Mecha Assembly D3 3 S 4 CN401 CN601 5 DVD Main CBA D4 2 S 5 CN201 CN301 2 2 1 2 2 2 3 3 6 Rear Unit D5 5 S 6 4 S 7 CN1005 1 Top Cover 4 DVD Mecha Assembly 2 Front Assembly 3 Top Bracket 6 Rear Unit 5 DVD Main CBA 16 Side Bracket 10 VCR Ch...

Страница 46: ...g the FFC cable CN301 from it If you disconnect the FFC cable CN301 the laser diode of pickup will be destroyed Fig D4 2 3 Disconnect Connector CN201 Remove two Screws S 5 and lift the DVD Main CBA Fig D4 CAUTION 3 When reassembling confirm the FFC cable CN301 is connected completely Then remove the solder from the three short lands of FPC cable Fig D4 CAUTION 4 When reassembling solder wire jumpe...

Страница 47: ...ds by soldering View for B Slide S 5 CN201 5 DVD Main CBA DVD Mecha S 5 CN301 Fig D4 Fig D5 S 7 S 6 S 6 S 7 6 Rear Unit S 7 CN1005 S 8 9 Rear Panel 7 Power Supply CBA 8 PCB Bracket S 9 S 8 Fig D6 S 11 S 11 S 10 S 10 S 10 S 11 S 11 10 VCR Chassis Unit Fig D7 ...

Страница 48: ...haft Cam Gear 12 Main CBA 11 Deck Assembly 12 Main CBA SW507 LD SW Pin Desolder Desolder BOTTOM VIEW From FE Head From Cylinder Assembly From AC Head Assembly Lead with white stripe Lead with blue stripe From Capstan Motor Assembly Lead connections of Deck Assembly and Main CBA Printing side Desolder Desolder Lead with blue stripe Lead with blue stripe ...

Страница 49: ... Deck Pedestal Fig D9 DVD Mecha Deck Assembly Tray Top Cover 3 2 Rotate this roulette in the direction of the arrow 1 2 To Remove the Disc Manually 1 Remove the Top Cover 2 Rotate this roulette in the direction of the arrow as shown below ...

Страница 50: ...M6 Desolder 3 S 2 8 8 Loading Motor Assembly T DM1 DM7 Desolder LDG Belt 2 S 3 9 9 AC Head Assembly T DM1 DM7 S 4 10 2 Tape Guide Arm Assembly T DM1 DM8 P 2 11 10 C Door Opener T DM1 DM8 L 4 12 11 Pinch Arm B T DM1 DM8 P 3 13 12 Pinch Arm Assembly T DM1 DM8 14 14 FE Head Assembly T DM1 DM9 S 5 15 15 Prism T DM1 DM9 S 6 16 2 15 Sensor Gear T DM1 DM15 17 2 Slider Shaft T DM10 L 5 18 17 C Drive Lever...

Страница 51: ...stallation Refer to Deck Exploded Views for lubrication 33 32 Loading Arm TU Assembly B DM2 DM14 Refer to Alignment Sec Page 5 14 34 2 25 M Brake TU Assembly T DM1 DM15 P 7 Brake Belt 35 2 25 M Brake SP Assembly T DM1 DM15 P 8 36 35 Tension Lever Assembly T DM1 DM15 37 36 T Lever Holder T DM15 L 12 38 34 Reel TU D2 T DM1 DM15 39 38 M Gear T DM1 DM15 40 36 Reel SP D2 T DM1 DM15 41 32 36 Moving Guid...

Страница 52: ...5 8 14 13 11 10 12 7 46 8 30 40 16 39 38 42 41 43 9 34 15 36 35 Fig DM1 Top View 29 32 20 33 24 25 27 26 23 28 31 21 22 Fig DM2 Bottom View ...

Страница 53: ... up the right side on 2 to release Pin A and Pin B from the slots A Then remove Pin C and Pin D on 2 from the slots B as shown Fig DM4 2 Pin A Slots B Pin C Pin B Pin D Pull up Slide Slot A Slot A 1 2 A 3 4 5 6 L 1 L 2 P 1 Fig DM5 L 3 Fig DM6 View for A Desolder from bottom Lead with Red Stripe L 14 46 47 7 S 2 A ...

Страница 54: ...pe A 8 9 S 4 S 3 LDG Belt 28 11 13 12 A 10 L 4 Adj Screw P 3 P 2 When reassembling 10 and 12 confirm that pin of 10 and pin of 12 are in the groove of 28 as shown Pin of 12 Pin of 10 Groove of 28 View for A Fig DM8 Fig DM9 14 15 S 6 S 5 16 Fig DM10 18 17 19 S 7 L 5 P 4 ...

Страница 55: ...shown in the left figure and then install 23 while pressing the spring P 5 to the direction of the arrow in the left figure and confirming that the position of the spring P 5 is placed as shown in the left figure Pin on 22 Position of pin on 22 Top View L 6 22 23 P 5 Pin on bottom of 23 23 21 C 1 C 4 ...

Страница 56: ...First groove on 28 Align 25 and 28 as shown Bottom View 28 Pin of 34 Pin of 31 Position of Mode Lever when installed Pin of 35 Fig DM13 25 24 C 3 S 9 25 27 26 28 C 2 L 8 L 9 L 10 Refer to the Alignment Section Page 5 14 Fig DM14 31 30 29 L 11 P 6 32 33 Fig DM15 35 37 turn turn 38 39 40 36 P 8 P 7 turn Break belt 34 L 12 ...

Страница 57: ...5 13 Fig DM16 41 42 43 L 13 44 45 Slide Fig DM17 ...

Страница 58: ... mechanical or electrical parts Alignment points in Eject Position Alignment 1 Loading Arm SP and TU Assembly Install Loading Arm SP and TU Assembly so that their triangle marks point to each other as shown in Fig AL2 Alignment 2 Mode Gear Keeping the two triangles pointing at each other install the Loading Arm TU Assembly so that the last tooth of the gear meets the most inside teeth of the Mode ...

Страница 59: ...A COMPONENT REPLACEMENT 2L054 2L054 2L091 2L012 2B11 Main CBA COMPONENT REPLACEMENT A B C 001 DVD Main CBA CBA REPLACEMENT ORDER FORMAT 2B15 2B15 W011 W012 W017 W003 W004 2B13 2L071 2L071 2L071 2L071 2L071 C A B A1X 2B33 2L013 F1001 Sensor CBA COMPONENT REPLACEMENT Sensor CBA COMPONENT REPLACEMENT DVD OPEN CLOSE CBA COMPONENT REPLACEMENT 2B6 Power Supply CBA COMPONENT REPLACEMENT Junction CBA COMP...

Страница 60: ...grease SLIDUS OIL 150 1 2 3 4 H I J 6 1 2 Deck Mechanism View 1 Section 6 1 3 Deck Mechanism View 2 Section 1 2 3 4 K L M Bottom Side Grease point Bottom Side Grease point View for A Grease point B516 B559 A B52 B507 B488 B134 B133 B568 B593 B570 B491 B565 L1151 B525 B592 B31 L1406 B148 B521 B520 B590 B564 B487 B573 B574 B499 B587 B508 B558 B557 B3 B417 B591 B522 B414 B416 Mark Description Floil G...

Страница 61: ...eck Mechanism View 3 Section B303 B555 B563 B300 B562 B482 B355 B354 B483 B425 L1321 B347 L1321 B361 B359 B529 B360 B514 B313 Mark Description Floil G 684G or Multemp MH D Blue grease SLIDUS OIL 150 1 2 3 4 N O P ...

Страница 62: ... ASSEMBLY B8 TS18414 PULLEY ASSEMBLY B9 TJ16892 MOVING GUIDE S PREPARATION B10 TJ16893 MOVING GUIDE T PREPARATION B11 TJ16894 LOADING ARM TU ASSEMBLY B12 TJ16895 LOADING ARM SP ASSEMBLY SYMBOL NO P NO DESCRIPTION B31 TS18415 AC HEAD ASSEMBLY B35 TS18416 TAPE GUIDE ARM ASSEMBLY B37 TS18417 CAPSTAN MOTOR B52 TJ15161 CAP BELT B73 TS17499 FE HEAD ASSEMBLY B74 TJ15163 PRISM B121 TJ16896 WORM B126 TJ168...

Страница 63: ...91 TJ16935 BAND BRAKE TU B592 TJ16936 TG POST B593 TS18425 CAM HOLDER F ASSEMBLY B594 TJ16937 M BRAKE S L1051 TJ14055 SCREW B M2 6X6 L1053 TJ15313 SCREW S M2 6X8 L1151 TJ15236 SCREW SEMS M2 6X4 L1191 TJ15313 SCREW S M2 6X8 L1321 TJ10176 SCREW S M3X6 L1406 TJ15238 AC HEAD SCREW L1450 TE12971 SCREW SEMS M2 6X5 L1466 TJ14066 SCREW S M2 6X6 L1467 TJ15958 SCREW S M2 6X5 L1 A TJ10177 SCREW 3X8 L1 B TJ10...

Страница 64: ...IC LA71091M IC451 TC12692 IC LA72670M IC501 TC12693 IC MN101D08EFD1 IC571 TC12684 IC PT6313 S TP IC751 TC12531 IC TC4053BF N SYMBOL NO P NO DESCRIPTION IC1001 TE13224 PHOTOCOUPLER LTV 817B F IC1002 TC12682 VOLTAGE REGULATOR PQ070XF01SZ IC1004 TC12682 VOLTAGE REGULATOR PQ070XF01SZ IC1006 TC12241 IC KIA431 AT IC1201 TC12251 IC KIA4558P IC1402 TC12683 DRIVER FOR DVD MM1622XJBE Q052 TC12591 TRANSISTOR...

Страница 65: ...752 TE15132 RCA JACK JK753 TJ15136 RCA JACK YELLOW JK754 TE15495 RCA JACK WHITE JK755 TE15496 RCA JACK RED JK756 TE15133 RCA JACK JK1202 TE15134 RCA JACK BLACK JK1401 TE14821 S TYPE JACK JK1403 TE15135 RCA JACK RM2001 TC12331 REMOTE RECEIVER PIC 37043LU SA1001 TC10891 SURGE ABSORBER PVR 10D471KB SW501 TE11957 TACT SWITCH SW502 TE11957 TACT SWITCH SW503 TE11957 TACT SWITCH SW504 TE11957 TACT SWITCH...

Страница 66: ...ering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All voltages are DC voltages unless otherwise specified Values in schematic diagrams The values dielectric strength power capacitance and tolerances of the resistors excluding variable resistors and capacitors are indicated in the sche matic diagrams using abbrevia...

Страница 67: ...r part numbers in the parts list section of the service manual 4 Wire Connectors 1 Prefix symbol CN means connector can disconnect and reconnect 2 Prefix symbol CL means wire solder holes of the PCB wire is soldered directly 5 Voltage indications for PLAY and REC modes on the schematics are as shown below 6 How to read converged lines 7 Test Point Information 2 3 1 5 0 2 5 PLAY mode STOP mode 5 0 ...

Страница 68: ... L DVD A R MUTE DVD A R AUDIO 5V SPDIF 11 12 13 14 15 16 17 18 REMOTE DVD FP CLK 21 22 CAPSTAN MOTOR FULL ERASE HEAD FE HEAD VIDEO R 1 HEAD VIDEO L 1 HEAD VIDEO IN AUDIO IN R AUDIO IN L FRONT VIDEO L 2 HEAD VIDEO R 2 HEAD Hi Fi AUDIO R HEAD Hi Fi AUDIO L HEAD M DRUM MOTOR PG SENSOR MAIN CBA DECK ASSEMBLY SENSOR CBA FUNCTION CBA DVD OPEN CLOSE CBA SENSOR CBA POWER SUPPLY CBA JUNCTION CBA TO WIRING ...

Страница 69: ...IN GND 5 6 SP 7 SP 8 SL 9 SL FG IN DVD P ON 3 3V TRAY IN DRIVE CBA FG CBA FG SENSOR TRAY OUT M SLED MOTOR M SPINDLE MOTOR EV 1 5V EV 1 5V EV 3 3V EV 1 5V EV 3 3V GND GND GND GND GND 1 2 3 4 5 6 7 8 9 10 CN401 STOP PLAY OPEN CLOSE POWER 1 2 3 4 CN302 GND GND EV 9V DVD P ON 5V EV 9V DVD P ON 3 3V FP DIN FP STB PWRCON OUT SEL 11 12 13 14 15 16 17 18 19 20 GND VODEO Cr GND VIDEO Cb VIDEO Y GND VIDEO C...

Страница 70: ...5 3 1 Main 1 8 Schematic Diagram 3 SCHEMATIC DIAGRAMS ...

Страница 71: ...6 3 2 Main 2 8 Sensor Schematic Diagrams Note When it is necessary to replace one or more of the following Diodes all four should be replaced D564 D565 D566 D567 1 ...

Страница 72: ...7 3 3 Main 3 8 Schematic Diagram ...

Страница 73: ...8 3 4 Main 4 8 Schematic Diagram ...

Страница 74: ...9 3 5 Main 5 8 Schematic Diagram ...

Страница 75: ...10 3 6 Main 6 8 Schematic Diagram ...

Страница 76: ...11 3 7 Main 7 8 DVD OPEN CLOSE Schematic Diagrams ...

Страница 77: ...12 3 8 Main 8 8 Schematic Diagram ...

Страница 78: ...n the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail A V F CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MÊME TYPE RISK OF FIRE REPLACE FUSE AS MA...

Страница 79: ...14 3 10 Function Schematic Diagram Note When it is necessary to replace one or more of the following Diodes all one should be replaced D561 1 ...

Страница 80: ...15 3 11 DVD Main 1 3 Schematic Diagram ...

Страница 81: ...16 3 12 DVD Main 2 3 Schematic Diagram ...

Страница 82: ... 6 99 0 0 131 2 3 2 3 4 0 0 36 68 3 4 3 4 100 132 0 4 0 1 5 37 69 0 0 101 133 1 2 0 4 6 38 0 3 0 5 70 1 7 1 7 102 134 0 4 0 1 7 3 3 3 3 39 0 1 0 1 71 2 4 1 7 103 135 0 2 0 2 8 40 72 104 3 3 3 3 136 2 3 2 3 9 41 73 105 0 9 0 9 137 1 7 1 7 10 42 3 3 3 3 74 106 0 0 138 0 0 11 0 0 43 0 0 75 3 4 3 4 107 0 8 0 8 139 1 7 1 7 12 44 76 108 1 6 1 6 140 1 7 1 7 13 45 77 109 2 1 2 1 141 1 7 1 7 14 3 3 3 3 46 ...

Страница 83: ...18 3 13 DVD Main 3 3 Schematic Diagram ...

Страница 84: ... of Main CBA TP302 of Main CBA UPPER LOWER TP302 of Main CBA TP301 of Main CBA WF4 Pin 7 of CN1601 WF6 Pin 21 of IC1402 WF5 Pin 9 of CN1601 VIDEO Y 0 2V 20µsec VIDEO C 0 2V 20µsec VIDEO CVBS 0 5V 20µsec WF7 AUDIO L Pin 13 of CN1601 1V 0 5msec WF8 AUDIO R Pin 15 of CN1601 1V WF9 SPDIF Pin 18 of CN1601 1V 0 1µsec NOTE Input CD 1kHz PLAY WF7 WF9 DVD POWER ON STOP MODE WF4 WF6 ...

Страница 85: ...20 SW P VR501 CTL TP513 RF SW TP302 WF2 C PB TP301 WF3 V OUT TP751 WF1 S INH TP502 5 1 Main CBA Top View Sensor CBA Top View 5 CIRCUIT BOARD DIAGRAMS Sensor CBA Top View ...

Страница 86: ...21 5 2 Main CBA Bottom View ...

Страница 87: ...22 5 3 Function CBA Top Bottom View DVD OPEN CLOSE CBA Top Bottom View Function CBA Top View Function CBA Bottom View DVD OPEN CLOSE CBA Top View DVD OPEN CLOSE CBA Bottom View ...

Страница 88: ...RED A V F CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MÊME TYPE RISK OF FIRE REPLACE FUSE AS MARKED This symbol means fast operating fuse Ce symbole reprèsente un fusible à fusion rapide CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used ...

Страница 89: ... BLOCK CLOCK DATA TU701 TUNER UNIT 23 INSEL ST SL INSEL ST SL 16 11 12 VCR TV 5 DVD IND 71 TIMER IND 75 REC IND 72 D567 DVD D566 VCR D564 TIMER POWER D565 CL508 CL509 D561 REC AL 5V Q563 Q565 Q566 Q567 LD SW 68 AL 12V AL 5V VCR IND 70 AL 5V SW512 AL 12V AL 15V P ON 5V LD SW AL 5V D555 S LED FROM TO POWER SUPPLY BLOCK TO DVD SYSTEM CONTROL BLOCK DIAGRAM IIC BUS SCL IIC BUS SDA 12 13 IIC BUS SCL 77 ...

Страница 90: ...L MODE SP REC 13 88 89 90 91 42 6dB AMP ENV DET AGC AMP HPF FROM TO SERVO SYSTEM CONTROL BLOCK DIAGRAM FROM TO SERVO SYSTEM CONTROL BLOCK DIAGRAM CYLINDER ASSEMBLY R L RF SW RF SW 93 V ENV H A SW H A COMP H A COMP TP302 WF2 WF1 VIDEO L 2 HEAD VIDEO R 2 HEAD TP301 C PB BUFFER D V SYNC C SYNC SW CTL SP LP SLP SP LP SLP C ROTA D V SYNC C ROTA 34 14 71 39 59 73 TRICK H TRICK INSEL ST SL 74 45 47 49 44...

Страница 91: ...AL REC AUDIO SIGNAL Mode SP REC 16 11 12 D REC H D REC H REC EE PB A MUTE H D PB L FROM SERVO SYSTEM CONTROL BLOCK DIAGRAM FULL ERASE HEAD IC301 SIF MOD A A IN R F A IN L F A IN L A IN R A OUT R A OUT L N A OUT N A IN JK752 A IN R A IN L JK754 A IN L F JK755 A IN R F FROM TO Hi Fi AUDIO BLOCK DIAGRAM FROM DVD VIDEO AUDIO BLOCK DIAGRAM DVD SECTION FRONT REAR IC751 OUTPUT SELECT DVD A L DVD A R 98 1...

Страница 92: ... 34 33 23 4 80 2 78 37 38 54 77 1 39 26 24 27 SIF A IN R A IN L N A OUT A IN R F A IN L F DVD A L DVD A R LIM 49 MUTE A OUT L MOD A A OUT R N A IN Hi Fi H SW A MUTE H NORMAL H 40 ST SAP MODE FROM TO AUDIO BLOCK IIC BUS SDA IIC BUS SCL P ON 9V TO SERVO SYSTEM CONTROL BLOCK Hi Fi AUDIO R HEAD Hi Fi AUDIO L HEAD CYLINDER ASSEMBLY MAIN CBA Hi Fi A R 7 Hi Fi COM 8 Hi Fi A L 9 CL253 IC451 MTS SAP Hi Fi ...

Страница 93: ...ND as a common terminal CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE ATTENTION POUR UNE PROTECTION CONTINUE LES RISQES D INCELE N UTILISER QUE DES FUSIBLE DE MEMO TYPE RISK OF FIRE REPLACE FUSE AS MARKED This symbol means fast operating fuse Ce symbole reprèsente un fusible à fusion rapide A V F 1 1 AL 44V 2 2 P DOWN L 3 3 AL 12V 5 5 AL 5V 7 7 AL 24V 1 ...

Страница 94: ...RAY IN FG IN 97 SLD 70 SPDL 71 TRACKING DRIVE 152 FOCUS DRIVE 60 66 TO DVD VIDEO AUDIO BLOCK DIAGRAM 51 ADAC MD 50 ADAC MC 96 ADAC ML ADAC MC ADAC ML PCM SCLK 95 DVD A MUTE ADAC MD DVD A MUTE 17 92 FSEL POFLT AD2 IC202 OP AMP RESET 68 RESET IC461 5 4 3 3V TRAY OUT TRAY IN FOCUS SERVO SIGNAL TRACKING SERVO SIGNAL SLED SERVO SIGNAL SPINDLE SERVO SIGNAL 3 SP 4 SP 5 TRAY OUT 6 TRAY IN 7 GND 8 SL 9 SL ...

Страница 95: ...TROLLER TIMER WATCH DOG TIMER 32BIT CPU STREAM I F EXTERNAL MEMORY I F SDRAM ECC UMAC 124 125 122 123 128 129 126 127 131 130 133 132 134 78 DEBUG BCU INST CACHE D TYPE LATCH DATA CACHE D A D A D A TO DVD VIDEO AUDIO BLOCK DIAGRAM 158 164 Y C Cr Cb VIDEO Y VIDEO C VIDEO Cr VIDEO Cb TO DVD VIDEO AUDIO BLOCK DIAGRAM 181 SPDIF 175 PCM BCK 176 PCM DATA0 174 PCM LRCLK 161 160 EXT ADT 0 15 EXT ADR 16 19...

Страница 96: ...VD A L DVD A R PCM BCK SPDIF PCM DATA0 PCM LRCLK ADAC MD ADAC MC ADAC ML PCM SCLK MAIN CBA DVD MAIN CBA DVD AUDIO SIGNAL DATA AUDIO SIGNAL 18 18 SPDIF DVD A MUTE 3 3V Q1204 WF9 3 WF7 WF8 CN601 7 7 VIDEO Y 9 9 VIDEO C 5 5 VIDEO Cb 3 3 VIDEO Cr VIDEO Y VIDEO C VIDEO Cb VIDEO Cr JK1401 S VIDEO OUT CN1601 3 4 2 1 IC1402 VIDEO DRIVER 18 4dB AMP 2dB AMP LPF DRIVER Y C 21 2dB AMP DRIVER 4dB AMP 2dB AMP L...

Страница 97: ...REV LM FWD REV L Stop A Loading Stop B Unloading Note Symbol Loading Status EJ Eject CL Eject REW Reel SB REW Reel Stop B TL Stop B Brake Cancel FB Brake Cancel FF REW SF FF REW Stop M FF REW SM Stop M FF REW Stop A AU Stop A Play REC AL Play REC Still Slow SS Still Slow RS REW Search RS RS REW Search Still Slow Control Frame Advance Timing Chart 1 SP Mode 18 RF SW F AD Internal Signal C DRIVE PB ...

Страница 98: ... Internal Signal C DRIVE PB CTL 27 C F R 79 H A SW 78 ROTA STILL STILL AT ST BL Stop detection T2 Acceleration Detection T1 Slow Tracking Value Reversal Limit Value FRAME ADVANCE The first rise of RF SW after a rise in F AD signal 20ms Fig 2 ...

Страница 99: ...LD REV 0 2S 0 5S PIN NO CL EJ SS SS AU AU TL LD SW CL SS LM FWD M REV C DRIVE Z ON ON C F R DRUM ROTATION P ON A MUTE H D REC H D PB PAUSE SLOW AU AL AL AU SF SM EJ AU RS SF SM TL FB AL SB 74 21 27 22 7 23 24 TV VCR 77 POWER OFF STOP PLAY RS FS STILL SLOW PLAY STOP PLAY DISPLAY 0 1S SB TL SB FB SM SM SF AL AL RS AU AL SS AU AL SM 0 8S 0 2S 0 3S 1 0S 0 2S 1 5S 2H 2 5S 4H 0 5S 0 2S 0 8S 2H 1 2S 4H 0...

Страница 100: ...A LD REV FF LD REV LD REV LD FWD LD FWD LD FWD LD FWD LD FWD LD FWD LD FWD REC PAUSE REC REC REW LD REV LD REV LD REV LD REV LD REV LD REV LD REV PAUSE REC or PAUSE STOP EJECT STOP EJECT STOP EJECT 2 STOP A FF STOP A REW STOP A REC PAUSE PAUSE or REC STOP A EJECT STOP FF STOP REW STOP REC REC REC PAUSE STOP TL TL SM SM SF SF AL AL SM AL AL AL AU AU SM TL SB EJ RS RS SM SM SF FB SM AU AU SS SS SS S...

Страница 101: ...e Play Play Tray Open Tray IN TL221 3 3V 0V 0V 3 3V 0V 1 65V 0V 0V 0V 1 65V 1 65V 1 65V Tray OUT TL220 Sled Drive TP303 Disc Drive TP301 Focus Drive TP304 Tracking Drive TP302 Tray Close Disc Rotation Play Disc Stop Tray Open ...

Страница 102: ...T SL Input Selector Control Signal EE Rec Still Slow Playback H Hi z L 17 OUT PICTURE SEL Picture Control Signal 18 OUT RF SW Video Head Switching Pulse H L 19 OUT D V SYNC Dummy V sync Output H Hi z 20 IN RESET System Reset Signal Reset L L 21 OUT LM FWD REV Loading Motor FWD REV Out put H Z L 22 OUT P ON L Power On Signal to Low L 23 OUT D PB L Playback Instruc tion Signal L 24 OUT D REC H Delay...

Страница 103: ...SAP IN Tuner Stereo Sap Detector Signal Input A D 62 IN END S Tape End Posi tion Detect Signal A D 63 IN AFC Automatic Frequency Con trol Signal A D Pin No IN OUT Signal Name Function Active Level 64 IN V ENV Video Envelope Comparator Sig nal A D 65 IN PG DELAY Video Head Switching Pulse Signal Adjusted Voltage A D 66 IN KEY 2 A D Key Data Signal 2 A D 67 IN KEY 1 A D Key Data Signal 1 A D 68 IN L...

Страница 104: ... Used 5 VSS GND 6 VDD Power Supply 7 Out a Segment Output 8 Out b 9 Out c 10 Out d 11 Out e 12 In f 13 In g 14 Out h 15 VEE Pull Down Level 16 Out i Segment Output 17 Out 7G Grid Output 18 6G 19 5G 20 4G 21 3G 22 2G 23 1G 24 VDD Power Supply 25 VSS GND 26 In OSC Oscillator Input 27 Out DOUT Serial Data Output 28 In DIN Serial Data Input ...

Страница 105: ...A1267 Y KTA1267 GR 2SC1815 BL TPE2 2SC1815 Y TPE2 2SC1815 GR TPE2 2SC2120 Y TPE2 KTC3203 Y 2SA1015 GR TPE2 KTC3198 Y GR 2SC2001 K 2SC2001 L E C B E C B 2SC536NF NG NPA AT A K C E LTV 817 B C F MID 32A22 PT204 6B 12 G D S 2SK3543 1 4 8 5 NJM4558D KIA4558P R A K KIA431 AT KIA431A AT TL431A TA 1 2 3 4 PQ070XF01SZ 81 80 31 100 50 30 1 51 LA71091M 16 9 8 TC4053BF N BU4053BCF 1 E C 28 15 14 PT6313 S TP ...

Страница 106: ...DV PF73U DV PF73U C DV PF33U DV PF73U DV PF73U C DV PF33U DV PF73U DV PF73U C DV PF33U No 9302E TK Digital Media Division Tokai ...

Страница 107: ... pulse on IC501 49 pin Check the voltage IC501 1 pin Check the voltage IC501 2 pin Error 2 Tape loading is abnormal Mechanism will not be normal position over 7 seconds error 2 indicates Error 3 Cassette loading is abnormal Over the the following time error 3 indicates Cassette in 3 seconds Cassette out Eject 5 seconds Check MK 12 mechanism and replace the faulty parts Error4 Drum motor rotation i...

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