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37

2. Power circuit (Power supply circuit)

2-1. Abstract And Function

It selects SMPS(SWITCHING MODE POWER SUPPLY) which is possible to put in from AC 108V~132V/60Hz with
SANKEN Ic STR-S5707 and supply the stable voltage which each circuit needs.
The voltage which electric resources circuit supplies is followed.

2-2. I801 STRS-5707

1) BLOCK DIAGRAM

NO. SUPPLY ELECTRIC

SOURCE

SUPPLY CIRCUIT

APPLICATION

RESOURCES

TRANS SECOND RECTIFIED

FBT

FBT B

+

1

DC 125V

VOLTAGE

PIF

For channel

D814

selecting(33V)

2

DC 12V

REGULATOR IC

SERVO circuit

For driving DRUM,

(MOTOR 12V)

I805(PQ12RF11)

CAPSTAN MOTOR

TUNER

For channel selecting(9V, 5V)

3

DC 12V

REGULATOR IC

IF AMP circuit

IF amp. circuit(9V), V/SIF(5V)

(ON/OFF 12V)

I804(PQ12RF11)

AUDIO circuit

For driving AUDIO I/O circuit

VIDEO circuit

For driving VIDEO, ANALOG circuit

4

DC 6.0V

REGULATOR IC

SERVO, TIMER IC

For driving SYSCON, TIMER,

(EVER 5.3V)

I803(KIA7806)

SYSCON IC circuit

SERVO circuit

TRANS SECOND

5

DC 14V

RECTIFIED VOLTAGE

AUDIO circuit

AUDIO AMP. B

+

D813

6

DC 9V

REGULATOR IC

DEFLECTION circuit

VERTICAL IC B

+

I806 (KIA7809)

H. VCC

START UP

OVP

LA TCH

PROPOTONAL

DRIVE

OSC

OCP

PRB RBG

T.S.D

SENS

R6

R7

R8

R9

R1

C1

R2

C2

C4

R5

INH

C3

R4

R3

Trl

B

3

C

GND

OCP

SINK

DRIVD

Tr2

PNP

+2D

7

9

VIN

1

4

8

5

6

2

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Содержание DVN-14F6N

Страница 1: ...DVN 20F6N DAEWOO ELECTRONICS CO LTD Caution In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please...

Страница 2: ...rotection circuit test 7 White valance adjustment 8 Convergence magnet assembly positioning Leadless chip Instruction Cleaning and rubrication of deck mecanism 7 1 Leadless chip component removal inst...

Страница 3: ...LS 5 IN05 BA6209 6 IN03 MC4558C 7 I503 TC4066BP 8 I301 TA8445K 9 IN01 Syscon TMP91C642AN 3178 10 I701 Timer M37267M6 101SP 11 I501 Chroma IC M52335SP 600 Important Signal WaveForms 80 Troubleshooting...

Страница 4: ...RCA 1 0Vp p 75 unbalanced Audio AUDIO IN jack RCA 3 8dBm over 100K OHM unbalanced TV Tuner VHF input CH2 CH13 Cable channels A W 75 unbalanced UHF input CH14 CH 69 Video Horizontal Resolution More tha...

Страница 5: ...for reference only Be sure to confirm the precise values for your particular country and locality 4 Leakage current test confirm specified or lower leakage current between B earth ground power cord pl...

Страница 6: ...ssis in the cabinet always be cer tain that all the protective devices are put back in place such as non metallic control knobs insulating covers shields isolation resistor capacitor network etc 4 Bef...

Страница 7: ...gh voltage protector when R409 of power PCB is connected to 30k 1 4w in parallel 3 If high voltage protector is operated remove 30k 1 4w and confirm whether high voltage protector is still on 4 Confir...

Страница 8: ...l RJ13 if necessary 4 Loosen the clamp screw holding the yoke and slide the yoke backward to provid vertical green belt zone in the picture screen 5 Remove the Rubber Wedges 6 Rotate and spread the ta...

Страница 9: ...t and make dot movement com plex B CIRCUMFERENCE CONVERGENCE ADJUSTMENT NOTE This adjustment requires Rubber Wedge Kit 1 Loosen the clamping screw of deflection yoke to allow to yoke to tilt 2 Place a...

Страница 10: ...C 150 C for about two minutes 1 2 Removing the leadless component Resistors Capacitors Grasp the leadless component body with tweezers and alternately apply heat to both electrodes When the sol der o...

Страница 11: ...10 1 47 A cleaning the Tape Transport System The following parts should be cleaned after every 500 hours of use TENSION POLE S GUIDE POST FE HEAD S SLANT POLE VIDEO HEAD DRUM T SLANT POLE T GUIDE ROL...

Страница 12: ...se Ass y 7 S Sub Brake Ass y 8 S Main Brake Ass y 9 Idler Plate Total Ass y 10 T Main Brake Ass y 11 T Sub Brake Ass y 12 Relay Lever 13 Capstan Motor 14 Pinch Lever Total Ass y 15 L C Bracker Total A...

Страница 13: ...ack 22 Connect Plate 23 Reel Belt 24 Reel Gear Total Ass y 25 Record Safety Lever 26 Loading Lever L 27 Loading Lever R 28 Drum Total Ass y 29 Loading Rack Fig 10 Tape Transport Mechanism Identificati...

Страница 14: ...acket R 3 Prism Cap 4 Release Lever 5 Loading Lever R 6 CST Holder Ass y 7 Loading Shaft 8 Loading Lever L 9 Door opener 10 Safety Lever 11 Safety Lever R Fig 11 Front Loading Mechanism Identification...

Страница 15: ...ove the cassette holder assembly Fig 13 4 Remove the prism cap and remove one 1 screw hold ing the prism link R and remove the prism link R from the F L bracket R Fig 4 5 Remove one 1 screw holding th...

Страница 16: ...tape runs smoothly and confirm all tape path adjustment procdures in the Mechanical Adjustment section of this service publica tion Reel belt Loading Rack Loading Gears and S T Slant Pole Removal Fig...

Страница 17: ...moval Fig 22 1 Remove one 1 screw from the L C bracket assem bly and remove the L C bracket assembly from the deck mechanism Fig 22 NOTE When reassembling refer to Fig 23 for alignment instruc tions R...

Страница 18: ...rom the main base and disconnect the s sub brake lever assembly from the main base 4 Unlook the T sub brake spring from the main base and disconnect the T sub brake lever assembly from the main base T...

Страница 19: ...side down and remove one polywasher 2 Release the tab B of the main base and part the reel gear total ass y from the main base 3 Push the connect plate to the left direction and sepa rate it from the...

Страница 20: ...when reassembling parts in this mechanism be sure to confirm the following instruc tions to confirm the following 1 Make sure that the datum hole of the cam gear A is aligned with the hole B in the ma...

Страница 21: ...nfirm that the two 2 triangular marks aligned with each other in the EJECT mode Fig 3 4 Make sure that the boss A of the Pinch Lever Total Ass y is positioned at the point B of the cam gear in EJECT m...

Страница 22: ...ding Gear R Ass y in EJECT mode Fig 5 6 Make sure that the teeth of the Loading Rack are aligned with the those of the Loading Gear R so that hole C of the Loading Rack aligns with the circulr mark D...

Страница 23: ...fication 25 33gr 4 If the result is not within the specification adjust the tension spring If the measured result exceeds the specification locate the spring on the hook A If the value does not reach...

Страница 24: ...f the mechanism is in the desired mode remove the Power Tension Pole Position Adjustment 1 Make the mode PLAY without a cassette loaded Refer to Operating the VCR Without a Cassette Tape 2 Confirm tha...

Страница 25: ...M 22 MECHANICAL ADJUSTMENTS CLEANING PATH ROUGH ADJ S GUIDE ROLLER HEIGHT ADJ DRUM TOTAL ASS Y A C HEAD ASS Y PINCH LEVER TOTAL ASS Y S POLE BASE ASS Y T POLE BASE ASS Y TENSION LEVER ASS Y A C HEAD H...

Страница 26: ...CHEMATIC DIAGRAM OF TAPE TRANSPORTING SYSTEM TENSION POLE S GUIDE POST FE HEAD S GUIDE ROLLER P2 S SLANT POLE DRUM T SLANT POLE T GUIDE ROLLER P3 A C HEAD T GUIDE POST CAPSTAN SHAFT PINCH ROLLER VERTI...

Страница 27: ...24 S SH HA AP PE E E EQ QU UI IP PM ME EN NT T O OF F D DV VN N 1 14 4 2 20 0F F6 6N N 1 DVN 14F6N DVN 20F6N 1 1 FRONT OF TV VCR 1 2 SIDE OF TV VCR SPEAKER RIGHT FRONT DOOR...

Страница 28: ...25 1 3 REAR OF TV VCR DVN 14F6N ONLY VHF Input connect VHF antenna to this terminal VHF INPUT Rear of TV VCR s Shape of DVN 20F6N is similar to DVN 14F6N S...

Страница 29: ...when recording and lights up when set for timer recording 6 CHILD LOCK Yellow indicator This indicator lights up when the child lock is set 7 REC button record Press this button to begin recording Pre...

Страница 30: ...s this button to find the most recent index mark on a tape and begin playing 8 REC ON OFF Use this buttin to enable or disable timer recording 9 MENU press this button to turn the on screen menu syste...

Страница 31: ...eliminate video noise when display ing a still frame 20 CLEAR Press this button to erase timer recording settings 21 PLAY Press this button to begin normal playback of a tape or to move the cursor in...

Страница 32: ...pluse 2 Adjust P2 to position which the edge of ENVELOPE signal has equal degree to the body of ENVELOPE signal Adjusting P3 is same to P2 s 3 Remark 1 After adjusting press stop button to eject the t...

Страница 33: ...2 to the V OUT PY09 and trigger the scope with the signal from CH1 2 Adjustment 1 Adjust RN90 to position the rising edge of SW PULSE at 6 5H from the V SYNC Mode Adjustment parts Check point Test equ...

Страница 34: ...t RU57 to obtain 3 0 mVrms 3 Adjustment Inspection Standard 3 0 0 1mVrms If you don t have Service Remocon You can set this rec mode by inserting a tape with record top and pushing rec button Item Mod...

Страница 35: ...e s signal width 2 Adjustment Inspection standard Maximum Point Item Mode Adjustment parts Check point Test equipments Test tape Input signal Audio Azimuth PLAY AC HEAD S P602 Signal GEN DN 2 7KHz Adj...

Страница 36: ...e scope with the signal from CH1 3 Adjust RY34 to the 3 58MHz Y component of MULTI BURST signal becomes less than 20 mVp p Location of Adjustment Parts Observation Waveform Y C PCB Horizontal Axis 10...

Страница 37: ...CH2 to the YNR TP RY05 and trigger the scope with the signal from CH1 3 Adjust RY91 until Color signal becomes minimum Location of Adjustment Parts Observation Waveform Y C PCB Horizontal Axis 10 S D...

Страница 38: ...nals video signal from pin 1 of I503 and video signal from PLAY MODE is selected and the selected signal is transmitted to pin 2 and pin 3 of I503 Final video signal is inputted to pin 22 of I701 to d...

Страница 39: ...ING TABLE OF I503 MODE RF A V PLAY TOGGLE PIN EE 5 L L H VIDEO 6 H L L AUDIO 12 L H H AUDIO 13 H H L VIDEO The input signal is transmitted to putput port when switching port is at logically high state...

Страница 40: ...SERVO circuit For driving DRUM MOTOR 12V I805 PQ12RF11 CAPSTAN MOTOR TUNER For channel selecting 9V 5V 3 DC 12V REGULATOR IC IF AMP circuit IF amp circuit 9V V SIF 5V ON OFF 12V I804 PQ12RF11 AUDIO c...

Страница 41: ...6 INH Inhibit Terminal Off Time Synchronizing Latch Terminal Latch Circuit Operation Signal Input 7 SENS Sensing Terminal Constant Voltage Control Signal Input 8 DRIVE Drive Terminal Base Drive Currne...

Страница 42: ...ect wound wire pin no 4 T801 TRANS increases and is rectified through D807 and C809 and DC 32V is put in I801 sense pin no 7 TRANS secondary voltage is established When MAIN TR of power IC is off ener...

Страница 43: ...by Mitsubish Syscon receives the signal from user s remocon and it becomes to be serial communication CLOCK S DATA IN S DATA OUT signal Timer IC selects channel with CLOCL DATA EN and receives the fu...

Страница 44: ...of Tracking In order to keep the constant speed It s put out to C PWM from caption Motor DC amplified in power curcuit and gets caption Motor drived By comparing with CTL signal from CTL Head connecte...

Страница 45: ...1 are amplified to 60dB respectively by V SW put out to 7 IY03 and put in to 4 IY01 LA7423A FM signal put in to 14 of IY01 is demodulated at FM DEMODULATIOR after passing through FM EQ within IC and p...

Страница 46: ...tions min typ max Unit put put T1 T2 PB mode T12 5 0V T10 OPEN EP SW30 T4 OPEN PB SP MUTE Current dissipation I CCP The current flowing 0 14 18 22 mA into pins 12 Voltage gain L CH1 GVP 1 T17A T7A Vi...

Страница 47: ...EC 5 5 ENV DET PB See attached OUT sheet REC 0 6 GND 2 2 7 PB OUT PB 2 3 REC C IN REC 3 6 8 REC Y IN REC 3 6 1k 100k 1 6V HA COMP 20k 80k 1 2V H SYNC COMP 20k 80k 1 6V REC PB COMP 100 20k 1k 50k 3 2V...

Страница 48: ...0 REC 1 6 10 REC CUR ADJ2 PB 2 5 REC 2 5 11 REC CUR PB 4 5 ADJI REC 5 0 12 VCC 13 REC BIAS PB 0 REC 1 7 14 REC OUT PB 0 REC 4 2 16 PB Amp 19 2 nd Filt PB 2 0 REC 3 6 100 1k 5k 1k 100 10k 20k 500 VCC C...

Страница 49: ...6 2 6 2 6 2 6 11 5 1 4 3 5 1 5 2 5 2 5 2 5 2 12 5 1 5 2 5 1 5 2 5 2 5 2 5 2 13 0 1 7 0 0 0 0 0 14 0 4 2 0 0 0 0 0 15 5 2 5 2 5 2 5 2 5 2 5 2 5 2 16 2 1 3 8 2 1 2 1 2 1 2 2 1 17 0 7 0 7 0 7 0 7 0 7 0 7...

Страница 50: ...tip clamp circuit Sample and hold circuit and output Amp 4fsc clock generator with PLL circuit VCO 4fsc output circuit 4 Absolute Maximum Ratings Items Symbol Unit Min max Conditions supply voltage V...

Страница 51: ...1 16 2 1 2 1 2 1 2 1 4 6 2 5 17 3 9 3 9 3 8 3 9 3 8 3 9 3 8 18 2 8 2 8 2 7 2 8 2 7 2 8 2 7 19 2 7 2 7 2 7 2 7 2 7 2 7 2 7 20 2 7 2 7 2 7 2 7 2 7 2 7 2 7 21 1 9 1 9 1 9 1 9 1 9 1 9 1 9 22 2 2 2 2 2 2 2...

Страница 52: ...t Output configuration Remarks 5 IY01 LA7423A Y C PROCESS IC 49 SYNC DET OUT 1 DC S DET OUT REC Y REC 2 4V 2 MADE DE PB 2 0V EMPH OUT REC 3 0V 3 CLAMP PB 3 2V EMPH OUT REC 2 1V 4 R P CTL PB 4 4V REC 2...

Страница 53: ...put Output configuration Remarks SP 0 1 5 V 7 MODE CTL LP 1 5 3 2 V EP 3 2 5 0 V REC 3V 8 VCA FILT DC PB 3V REC 2 2V 9 VCA IN PB 2 2V 10 GND 0V REC 1 0V 11 CCD DRIVE PB 1 0V PIC CTL REC 3V SOFT 2 0 2...

Страница 54: ...5V 13 NC CTL under 1 5V N C OFF 2 0 3 0V N C CTL PB 2 5V over 3 8V Y CMix OFF N C Center REC C OUR REC 2 4V 14 PB YC IN PB 3 2V Y FM Low Chroma AGC TC 1 REC 2 4V 15 BALANCER PB 2 3V REC APC REC 2 3V...

Страница 55: ...nfiguration Remarks REC 2 8V 19 SLD FILT PB 2 8V AFC APC REC 2 8V 20 FILT PB 2 8V REC 1 9V XO mode when over 3 5V 21 C OUT PB 1 9V ANR ON when over 3 5V Color 1 9V 22 KILL FILT Killer 3 1V REC 1 7V 23...

Страница 56: ...53 No Pin function Type voltage V Signal waveform Input Output configuration Remarks 25 REG 4 2 4 2V D C 26 SYNC OUT 1 75V when CNR mode 27 VCC 1 28 VIDEO OUT 29 QV QH INS CHARA INS 30 ROT PLS...

Страница 57: ...Input Output configuration Remarks REC 2 7V 31 VIDEO IN PB 2 7V REC 1 6V 32 AGC TC2 D C PB 1 6V REC 0V 33 SVHS FM IN PB 3 7V Normal VHS 0V MOD OUT REC 3 0V 34 DOC STOP H PB 3 6V 3 95 DOC STOP REC 0V...

Страница 58: ...E STOP REC PLAY REW FWD REV FF PAUSE STILL 1 0 0 0 0 0 0 0 2 4 6 4 6 4 6 4 6 4 6 4 6 4 6 3 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 5 11 2 11 2 11 2 11 2 11 2 11 2 11 2 6 4 7 4 7 4 7 4 7 4 7 4 7 4 7 7 11 4 11 4...

Страница 59: ...9 0V 10k Vcc 6 PB NFB PB AMP fecdback 3 5V B NPN 7 Vcc Vcc 9 0V 8 PB EQ PB EQ selecting switch 3 5V 55 ON OPEN 9 EQ CTRL EQ control 10 PB OUT EQ AMP output 3 5V EE 11 PB TU EE CTRL PB TU EE control 12...

Страница 60: ...1 3 3 2 3 2 3 2 3 3 3 3 4 0 0 0 0 0 0 0 5 2 8 2 7 3 3 3 3 3 3 3 6 3 6 6 0 9 0 9 3 2 3 2 3 2 3 3 3 3 7 1 4 1 4 3 7 3 7 3 7 5 3 5 3 8 6 6 6 6 6 6 6 PIN MODE STOP REC PLAY 1 6 6 6 2 5 3 0 5 3 3 0 0 0 4...

Страница 61: ...turation Voltage 2 Vs12 11 6 1 0 1 8 3 6 V Pump up output Voltage 1 Vs7 8 7 1 0 2 0 3 0 V Pump up output Voltage 2 Vs8 10 8 0 2 0 8 1 6 V No signal Current Ib 9 2 6 mA Center Voltage VCENTER 10 8 0 12...

Страница 62: ...6 18 0 4 8 4 8 4 8 4 8 4 8 4 8 19 0 2 7 2 7 2 7 2 7 2 7 2 7 20 4 7 3 2 3 2 3 2 3 2 4 7 4 7 21 5 2 5 2 5 3 5 3 5 3 5 3 5 3 22 0 0 0 0 0 0 0 23 0 2 6 2 6 2 6 2 6 2 6 2 6 24 0 0 0 0 0 0 0 25 0 0 0 0 0 0...

Страница 63: ...0 0 0 0 51 0 0 0 0 0 0 0 52 0 0 0 0 0 0 0 53 0 0 0 0 0 0 0 54 2 1 3 5 3 5 3 5 2 1 3 5 3 5 55 2 6 2 6 2 6 2 1 5 2 2 6 2 6 56 5 5 5 5 5 5 5 57 5 2 5 2 5 2 5 2 5 2 5 2 5 2 58 5 3 5 3 5 3 5 3 5 3 5 3 5 3...

Страница 64: ...H reverse L of CAP M T 12 C SYNC Composite SYNC 13 REMOCON IN REMOTE controller signal 14 REEL PULSE Take Up Reel Pulse IN 15 STROBE Port to have S DATA with TUNER 16 RENTAL H Set on H when rental 17...

Страница 65: ...when special play Audio MUTE output 38 SP L tape speed SP L output 39 LP L tape speed LP L output 40 R CTL Change Record CTL DUTY when MARK ERASE mode 41 2HD 4HD 4HD L OR 2HD H 42 A MUTE H Audio Mute...

Страница 66: ...NT SEARCH DC ENVE input AUTO TRACKING RESTART CONDITION SP 2 5V SPL LP 1 5 5V CASSETTE IN in play mode when tape speed is changed in play mode PB CTL PULSE off PB CTL PULSE on 61 SYSTEM SEL NOT USED 6...

Страница 67: ...9 25 XOUT P63 OSC2 XCIN 28 26 VSS VCC 27 HSYNC INPUT VSYNC INPUT AFT INPUT N C SYNC DETECT INPUT N C N C N C MONITOR POWER ON L OUTPUT SERIAL STROBE OUTPUT TINT PWM OUTPUT COLOT PWM OUTPUT PLL STROBE...

Страница 68: ...STROBE SERIAL STROBE OUTPUT SIGNAL O LOW 11 P00 PWM4 TINT TINT PWM OUTPUT SIGNAL O 12 P01 PWM5 COLOR COLOR PWM OUTPUT SIGNAL O 13 P02 PWM6 PLL STROBE PLL STROBE OUTPUT SIGNAL O 14 P17 SIN S DATA IN S...

Страница 69: ...D 32 P30 N C NOT USED 33 P03 N C NOT USED 34 P16 N C NOT USED 35 P05 N C NOT USED 36 P14 SDA2 N C NOT USED 37 P13 SDA1 E2PROM DATA E2 PROM DATA IN OUT TERMINAL I O 38 P12 SCL2 N C NOT CONNECTED I 39 P...

Страница 70: ...E 47 P05 PWM1 BRIGHT BRIGHT PWM OUTPUT TERMINAL I 48 P04 PWM0 CONTRAST CONTRAST PWM OUTPUT TERMINAL O 49 P55 OUT1 BLANK BLINKING OUTPUT TERMINAL O 50 P54 B B B OUTPUT TERMINAL O 51 P53 G G G OUTPUT TE...

Страница 71: ...VIF IN VIF IN VCC 1 VIF SIF APC FILTER VCC 2 DEF AFC FILTER AFC FBP IN 32fH OSC X RAY PROTECT COINCIDENCE OUT V OUT Vcc 2 VC H OUT COLOR CONT Y OUT R Y OUT G Y OUT B Y OUT OSD B ATT AMP AF AMP EQ DET...

Страница 72: ...he EM detector is a quadrature detector and externally connects a tank coll or discrimina tor This is also used as an AV switching pin to apply voltage through a 10k GND to EXT Y DL OPEN to TV Y DL Vc...

Страница 73: ...aracteris tics Set a filter constant to avoid a sag around 70dB RFAGC delay point is set by the voltage applied to this pin Input resistance is 1k Input capacitance is 7pF The f characteristic of a lo...

Страница 74: ...external resistor R to provide a faster response speed However horizontal jit ters in a weak electric field will increase Flyback pulse is sliced on 4V to generate an AFC2 detector pulse Remember tha...

Страница 75: ...izontal AFC is locked otherwise the voltage goes down therefore the pin can be also used as a MUTE detector At that time pay attention to high impedance Pulse as shown below is putput Power supply for...

Страница 76: ...flybaxk pulse is entered for blanking from outside a blanking pulse is entered internal ly and a chroma symbol is also blanked The blanking threshold volt age is 7 1V Open emitter output with maximum...

Страница 77: ...oltage of 2 5V or more causes blanking Cap challenge is changed by R As R is decreased the cap chal tenge becomes narrow er but phase jitters are reduced Use XTAL of series capacitance type As R is de...

Страница 78: ...38 CHROMA IN 4 5V BRIGHTNESS Pin holding the most dark part of a video sig nal As R is increased the black peak is held contrarily the peak gets cloaer to an average To decrease killer sensi tivity co...

Страница 79: ...N 3 3V 42 EXT VIDEO IN Used to connect a hold capacitor Sharpness control pin By increasing voltage the pin is set to soft side Make an entry at low input impedance to avoid pedestal clamp Standard co...

Страница 80: ...5V 44 SYNC IN 6 6V 45 TV IN 2 5V 46 VCO COIL 4V 47 Output at 1 5Vp p Sync separation of emit ter input type Vertical sync separation is done inside the 1C Make an entry at 1V p p Reference tuning capa...

Страница 81: ...to 0 5V 51 VIDEO OUT Volume control pin Applying voltage 0f 2 5v or more defeats AFT Current output type As load resistor R is increased detector sen sitlvity becomes higher but offlot becomed larg er...

Страница 82: ...79 Pin Name Voltage and Peripheral circuit of pins Description of function No wave Information 52 RF AGC OUT current output type Max 0 4mA DESCRIPTION OF PIN cont 50 0 4mA 0 4mA...

Страница 83: ...IY01 PIN 14 PB ENVELOPE IN03 PIN 1 CTL HEAD IMPORTANT SIGNAL WAVEFORMS 80 IY01 PIN 2 PLAY IN01 PIN 20 CTL PULSE I501 PIN 38 IY01 PIN 2 REC...

Страница 84: ...81 I501 PIN 43 IY01 PIN 31 VIDEO IY01 PIN 28 VIDEO OUT PLAY IY01 PIN 26 C SYNC P504 PIN 4 Y PH502 PIN 2 HEATER PULSE...

Страница 85: ...AUDIO WAVE FORMS IU01 3 REC IU01 10 PLAY IU01 12 PLAY IU01 16 REC 82 IU01 21 REC IU01 22 REC IU01 23 REC SP Mode LU06 7 REC...

Страница 86: ...supplied to FBT Suggestions when service power supply unit 1 When change components of trouble part disconnect Power pulg and discharge voltage across both terminals of C806 completely use scores of K...

Страница 87: ...mal Is feedback Voltage of T801 TRANS normal Be all right Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No Are diodes operated D802 D803 D804 D805 Check F801 Power code Check R803 C8...

Страница 88: ...r terminal of Q402 normal Is 180V of FBT output normal Is FBP correct Check CRT PCB Yes Yes Yes Yes Yes No No No No No No No Yes Is 26 5V of FBT output normal Check R832 R809 Check R301 and D301 Check...

Страница 89: ...supplied at pin 7 and pin 1 of I301 check a waveform at pin 5 of I301 check a waveform at pin 11 of I301 Checking connecting part of DY Be all right Yes Yes Yes Yes Yes Yes No No No No No Is waveform...

Страница 90: ...Is collector waveform of Q402 normal Check R406 C413 L402 C409 D404 R407 Be all right Yes Yes Yes Yes No No Yes Check the capacity of C412 and soldering condition Check T401 and L401 Check T402 pin 1...

Страница 91: ...Yes Yes Yes Yes Yes Yes No No No Noise shakes up and down on the screen Is CTL pulse applied to pin 7 of IN03 Is CTL pulse applied to pin 20 of IN01 Check IN 01 Noise appears although change cassette...

Страница 92: ...circuit Is SW pulse suppiled from pin 23 of IN01 Check connector Head Amp and Clean heads Check D PG input IN01 pin 18 and connector PY04 Check patten Yes No No Yes Instrument goes to auto stop durin...

Страница 93: ...nector PY04 and DRUM Motor Capatan Motor does not rotate Is Motor 12V supplied to PY03 pin Chock I805 Is the voltage of pin PY03 2 3 5V Check circuit of RN77 RN76 RN75 Is the voltage of PY03 pin 2 5V...

Страница 94: ...blinks Is EVER 6V supplied Check I803 Check IN01 and XN01 Check connector PAN04 CAM SW in DECK Mechanism Does XN01 crystal oscillate Is CAM SW DATA at pin 54 and 55 of IN01 Correct Check IN05 and loa...

Страница 95: ...of IN01 Check pattern Check pattern Check DN13 RCN22 RN21 Check IN01 Are there changes in the cam data when the cassette is in Is 6V applied to pin of IN05 when casette IN Is 5V applied to pin of IN0...

Страница 96: ...signal output from pin 43 of I501 Is signal input into pin 4 of I503 Is signal input into pin 38 of I501 Check PIF circuit and LINE IN JACK Check ON OFF 9V circuit Check I501 Check Y C PCB Check pin 5...

Страница 97: ...No video Check clock enable and data of tuner Check pin 35 36 37 of I701 Check oscillation at pin 24 of I701 Check Tuner Is IF signal from tuner normal Refer from EE mode no video trouble shooting flo...

Страница 98: ...2 Check IY01 pin 24 27 5V Check IY01 pin 4 EE mode L PB mode H Change QY01 Change IY01 Check QY09 and QY07 QY08 QY10 Change IY01 Is signal output from pin 3 of I503 Check pattern Is signal output from...

Страница 99: ...heck C sync Check IN01 pin 23 Is REC color signal output from IY01 pin 14 Is luminance signal output from IY01 pin 2 Is luminance input to IY01 pin3 Is REC Y FM signal output from IY01 pin34 Is C sync...

Страница 100: ...k if there is input at pin 48 of I501 Check Z103 CC115 CC116 L104 Check Q101 Base TV L AV H Check if there is input at pin 2 of I501 Check I501 Check if there is output at pin 5 of I601 Check of 14V a...

Страница 101: ...07 Check QN06 Check IU01 Is 5V applied to pin 11 of IU01 Is pin 24 of of IU01 0V Is pin 3 of IU01 Ground Check pin 3 4 of PAN05 Is the signal applied to pin 1 of I501 Is Q101 base H Check I501 Check I...

Страница 102: ...3 Check Q105 Change I501 Check I503 pin 8 Check IU01 pin 24 When recording Check QN06 and IN01 Is the voltage 12V at pin 3 of LU06 Check QU05 Check LU06 Check IU01 Does LU06 pin 5 oscillate Is record...

Страница 103: ...62 HORIZONTAL WITH 3 63 WITHOUT 4 64 1 1 RESISTOR CODING ELECTRICAL PARTS LIST 100 Type of Resistor C Composition Resistor D Carbon Resistor F Fusible Resistor K Ceramic Resistor N Metal Film Resisto...

Страница 104: ...lastic Voltage 1 AC125V 2 AC250V 3 125 250V Size A MF41 4 6x16 B MF51 5 2x20 C MF60 6 3x30 D MF61 6 3x31 8 E MF01 10 3x38 1 F MF04 14 3x50 8 G MF05 20 5x76 2 Characteristic Capacitance Temperature coe...

Страница 105: ...000PF K TAPPING C908 CEXF2E100C C ELECTRO 250V RUS 10MF 10 20 TP D901 D1N4148 DIODE 1N4148 TAPPING D902 D1N4148 DIODE 1N4148 TAPPING D903 D1N4148 DIODE 1N4148 TAPPING G4 4857417500 TERM PIN DA IB0214...

Страница 106: ...CB POWER 164 5X94 5 330X246 2X2 C301 CCXB2H102K C CERA 500V B 1000PF K TAPPING C302 CMXM2A103J C MYLAR 100V 0 01MF J TP C304 CMXM2A103J C MYLAR 100V 0 01MF J TP C305 CMXM2A104J C MYLAR 100V 0 1MF J TP...

Страница 107: ...25 ULW 300 4850709S03 CONN AS YH025 09 YST025 ULW 400 DVN 20F6N PA803 4850702S15 CONN AS YPH500 02 YLT500 ULW 300 4850702S03 CONN AS YPH500 02 YLT500 ULW 400 DVN 20F6N PA804 4850701S06 CONN AS YFH800...

Страница 108: ...100K OHM J R821 RS03Y362JS R M OXIDE FILM 3W 3 6K OHM J SMALL R822 RS03Y362JS R M OXIDE FILM 3W 3 6K OHM J SMALL R823 RD 4Z103J R CARBON FILM 1 4 10K OHM J R826 RD 4Z104J R CARBON FILM 1 4 100K OHM J...

Страница 109: ...Z 2012 CCY52 HCQK470JCA C CHIP CERA 50V CH 47PF J 2012 CCY55 HCBK103KCA C CHIP CERA 50V X7R 0 01MF K 2012 CCY56 HCBK103KCA C CHIP CERA 50V X7R 0 01MF K 2012 CCY57 HCBK103KCA C CHIP CERA 50V X7R 0 01M...

Страница 110: ...PING DY05 D1N4148 DIODE 1N4148 TAPPING DY11 D1N4148 DIODE 1N4148 TAPPING DY12 D1N4148 DIODE 1N4148 TAPPING IY01 1LA7423A IC VIDEO LA7423A Y C 1CHIP NTSC IY02 1LC89960 IC VIDEO LC89960 1H CCD NTSC IY03...

Страница 111: ...JCA R CHIP 1 10 8 2K OHM J 2012 RCY07 HRFT182JCA R CHIP 1 10 1 8K OHM J 2012 RCY09 HRFT272JCA R CHIP 1 10 2 7K OHM J 2012 RCY11 HRFT122JCA R CHIP 1 10 1 2K OHM J 2012 RCY12 HRFT391JCA R CHIP 1 10 390...

Страница 112: ...CARBON FILM 1 6 22K OHM J RY38 RD AZ182J R CARBON FILM 1 6 1 8K OHM J RY91 RV4121202P R SEMI FIXED NVZ6THT 2K OHM XY01 5XE3R5795B CRYSTAL QUARTZ HC 49 U 3 579545MHZ 15PPM LOC PART CODE PART NAME PART...

Страница 113: ...LM 1 6 1K OHM J RQ20 RD AZ224J R CARBON FILM 1 6 220K OHM J RQ21 RD AZ392J R CARBON FILM 1 6 3 9K OHM J RQ22 RD AZ331J R CARBON FILM 1 6 330 OHM J SWQ01 5S50101090 SW TACT SKHV17910A SWQ02 5S50202002...

Страница 114: ...527 CEXF1H228V C ELECTRO 50V RSS 0 22MF 5X11 TP C532 CEXF1H220V C ELECTRO 50V RSS 22MF 5X11 TP C534 CEXF1H109V C ELECTRO 50V RSS 1MF 5X11 TP C560 CEXF1H220V C ELECTRO 50V RSS 22MF 5X11 TP C570 CEXF1H1...

Страница 115: ...P C819 CCZF1E103Z C CERA 25V F 0 01MF Z AXIAL C820 CEXF1E101V C ELECTRO 25V RSS 100MF 6 3X11 TP C822 CCXB1H152K C CERA 50V B 1500PF K TAPPING C823 CMYE2J222J C MYLAR 630V PL 2200PF J C824 CH1BFE472M C...

Страница 116: ...82PF J 2012 CC533 HCQK681JCA C CHIP CERA 50V CH 680PF J 2012 CC536 HCQK151JCA C CHIP CERA 50V CH 150PF J 2012 CC540 HCQK151JCA C CHIP CERA 50V CH 150PF J 2012 CC603 HCQK681JCA C CHIP CERA 50V CH 680P...

Страница 117: ...2012 CCN38 HCQK471JCA C CHIP CERA 50V CH 470PF J 2012 CCN39 HCQK471JCA C CHIP CERA 50V CH 470PF J 2012 CCN44 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012 CCN46 HCBK103KCA C CHIP CERA 50V X7R 0 01MF K...

Страница 118: ...F1C100A C ELECTRO 16V RSM 10MF 5X7 CU13 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 CU16 CMXM2A103J C MYLAR 100V 0 01MF J TP CU17 CEXF1H220V C ELECTRO 50V RSS 22MF 5X11 TP CU18 CEXF1H339V C ELECTRO 50V RSS...

Страница 119: ...5C DIODE BYV95C TAPPING D808 DBYV95C DIODE BYV95C TAPPING D809 DBYV95C DIODE BYV95C TAPPING D810 DBYV95C DIODE BYV95C TAPPING D811 DBYV95C DIODE BYV95C TAPPING D812 DBYV95C DIODE BYV95C TAPPING D813 D...

Страница 120: ...790LS L102 58B25R2S60 COIL PIF TRF 0082 STICK L103 58C5580019 COIL CHOKE TRF 9225 0 55UH L104 5CPZ470K02 COIL PEAKING 47UH K AXIAL 3 5MM L105 5CPZ101K04 COIL PEAKING 100UH K AXIAL 10 5MM L106 58C55800...

Страница 121: ...ER KKP 8W SPT 2 18AWG ST PY01 4859249420 CONN WAFER YF254 08 PY02 4859250020 CONN WAFER YF254 14 PY03 4859278220 CONN WAFER TKC G10P A1 PY04 4859278120 CONN WAFER TKC G06P A1 Q101 TKSC945CY TR KSC 945...

Страница 122: ...RH0638C 4 7K OHM B R507 RD AZ332J R CARBON FILM 1 6 3 3K OHM J R524 RD 4Z241J R CARBON FILM 1 4 240 OHM J R525 RD AZ101J R CARBON FILM 1 6 100 OHM J R528 RD AZ683J R CARBON FILM 1 6 68K OHM J R530 RD...

Страница 123: ...HM J TAPPING R809 RF02Z278J R FUSIBLE 2W 0 27 OHM J TAPPING R812 RD 2Z124J R CARBON FILM 1 2 120K OHM J R813 RD 4Z104J R CARBON FILM 1 4 100K OHM J R814 RD 4Z680J R CARBON FILM 1 4 68 OHM J R815 RD 4Z...

Страница 124: ...470K OHM J 2012 RC140 HRFT330JCA R CHIP 1 10 33 OHM J 2012 RC141 HRFT120JCA R CHIP 1 10 12 OHM J 2012 RC142 HRFT102JCA R CHIP 1 10 1K OHM J 2012 RC143 HRFT272JCA R CHIP 1 10 2 7K OHM J 2012 RC144 HRF...

Страница 125: ...012 RC562 HRFT103JCA R CHIP 1 10 10K OHM J 2012 RC563 HRFT103JCA R CHIP 1 10 10K OHM J 2012 RC564 HRFT122JCA R CHIP 1 10 1 2K OHM J 2012 RC565 HRFT273JCA R CHIP 1 10 27K OHM J 2012 RC566 HRFT561JCA R...

Страница 126: ...J 2012 RC764 HRFT473JCA R CHIP 1 10 47K OHM J 2012 RC765 HRFT683JCA R CHIP 1 10 68K OHM J 2012 RC767 HRFT471JCA R CHIP 1 10 470 OHM J 2012 RC769 HRFT101JCA R CHIP 1 10 100 OHM J 2012 RC770 HRFT103JCA...

Страница 127: ...M J 2012 RCN36 HRFT273JCA R CHIP 1 10 27K OHM J 2012 RCN40 HRFT472JCA R CHIP 1 10 4 7K OHM J 2012 RCN44 HRFT472JCA R CHIP 1 10 4 7K OHM J 2012 RCN47 HRFT473JCA R CHIP 1 10 47K OHM J 2012 RCN49 HRFT472...

Страница 128: ...JCA R CHIP 1 10 10 OHM J 2012 RCU33 HRFT104JCA R CHIP 1 10 100K OHM J 2012 RCU34 HRFT102JCA R CHIP 1 10 1K OHM J 2012 RLY1 5SC0101328 SW RELAY SDT SS 112DM RN05 RD AZ391J R CARBON FILM 1 6 390 OHM J R...

Страница 129: ...RH0638C 47K OHM B RN94 RD AZ472J R CARBON FILM 1 6 4 7K OHM J RN95 RD AZ472J R CARBON FILM 1 6 4 7K OHM J RN96 RD AZ472J R CARBON FILM 1 6 4 7K OHM J RN97 RD AZ472J R CARBON FILM 1 6 4 7K OHM J RN98...

Страница 130: ...DSW1003S FILTER SAW DSW 1003S Z102 5PXPS45MB FILTER CERA TPS 4 5MB TRAP TAPPING Z103 5PXFSH4R5M FILTER CERA SFSH4 5MCB TF21 TAPING Z801 DSVC271D14 VARISTOR SVC271D14A The exclamation point within an e...

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Страница 141: ...ENGINEER NOTE...

Страница 142: ...DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA PRINTED DATE NOV 1996 S M NO CN140N 010...

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