Daewoo DV-F46N Service Manual
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Daewoo DV-F46N Service Manual

Daewoo DV-F46N Service Manual

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Service Manual
POWER
DAEWOO ELECTRONICS CO., LTD.
MODEL : DV-F46/26N
EJECT
DV-F48/28N
DV-F54/34N
DV-F44/24N/X
PLAY
REW
FF
STOP
REC / OTR
CH/TRACK

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  • Page 1 All manuals and user guides at all-guides.com Service Manual MODEL : DV-F46/26N DV-F48/28N DV-F54/34N DV-F44/24N/X PLAY POWER EJECT STOP REC / OTR CH/TRACK DAEWOO ELECTRONICS CO., LTD.

  • Page 2: Specifications

    All manuals and user guides at all-guides.com SPECIFICATIONS SYSTEM Frequency response 100 Hz-10KHz (SP) Signal to noise ratio More than 40 dB Video signal NTSC color Audio Distortion Less than 3% (SP) Channel coverage VHF Channel 2-13 UHF Channel 14-69 CATV Channel A1-A5, TAPE TRANSPORT A8, A-W, W+1-W+84...
  • Page 3 All manuals and user guides at all-guides.com • Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.
  • Page 4 All manuals and user guides at all-guides.com TABLE OF CONTENTS SECTION 1. CONTROLS AND FUNCTIONS ......................2 SECTION 2. ELECTRICAL ADJUSTMENTS 2-1. SERVO CIRCUIT ADJUSTMENT METHOD ........................5 2-2. VIDEO CIRCUIT ADJUSTMENT METHOD........................6 2-3. AUDIO CIRCUIT ADJUSTMENT METHOD........................12 SECTION 3. TROUBLE SHOOTING FLOW CHART 3-1.

  • Page 5: Controls And Functions

    All manuals and user guides at all-guides.com CONTROLS AND FUNCTIONS SECTION 1. FRONT DV-F44/24N PLAY POWER EJECT STOP REC / OTR CH/TRACK DV-F46/26N PLAY STOP EJECT REC/OTR POWER CH./TRACKING...
  • Page 6 All manuals and user guides at all-guides.com FRONT DV-F48/28N POWER EJECT STOP PLAY DV-F54/34N POWER PAUSE STOP / STILL PLAY EJECT REC/OTR...
  • Page 7 All manuals and user guides at all-guides.com REAR ANT.IN VIDEO AUDIO RF OUT CH.3 CH.4...

  • Page 8: Electrical Adjustment

    All manuals and user guides at all-guides.com ELECTRICAL ADJUSTMENT SECTION 2. 2-1. SERVO CIRCUIT ADJUSTMENT METHOD 1. PB Phase Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal CH 1: PT01 ! R595 CH 2: VIDEO Oscilloscope DN-1 OUTPUT JACK Location of Adjustment Parts Observation Waveform...

  • Page 9: Video Circuit Adjustment Method

    All manuals and user guides at all-guides.com 2-2. VIDEO CIRCUIT ADJUSTMENT METHOD 1. EE LEVER Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal LINE INPUT CH1: TJ313 Signal Gen. Color Bar # R395 & STOP CH2: TJ395 Oscilloscope with 100% white Location of Adjustment Parts...
  • Page 10 All manuals and user guides at all-guides.com 2. PLAYBACK VIDEO OUTPUT LEVEL Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal CH 1: TJ313 $ 396 CH 2: VIDEO Oscilloscope DN-1 OUTPUT JACK Location of Adjustment Parts Observation Waveform H-Axis: 50us/div V-Axis: 0.5v/div MAIN PCB...
  • Page 11 All manuals and user guides at all-guides.com 3. COMB PHASE Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal LINE INPUT CH1: TJ313 Signal Gen. % R494 Multiburst & STOP CH2: TJ494 Oscilloscope Location of Adjustment Parts Observation Waveform H-Axis: 10us/div V-Axis: 20mv/div MAIN PCB...
  • Page 12 All manuals and user guides at all-guides.com 3. SYNC TIP FREQ. Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal +: TJ391 & R391 STOP Freq. Counter Without signal –: GND Location of Adjustment Parts Observation Waveform H-Axis: V-Axis: MAIN PCB HEAD-AMP...
  • Page 13 All manuals and user guides at all-guides.com 5. COLOR REC CURRENT Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal LINE INPUT CH1: TJ313 Signal Gen. * R491 Color Bar & STOP CH2: TJ399 Oscilloscope Location of Adjustment Parts Observation Waveform H-Axis: 10us/div V-Axis: 20mv/div...
  • Page 14 All manuals and user guides at all-guides.com 6. Y REC CURRENT Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal LINE INPUT CH1: TJ313 Signal Gen. ( R399 Color Bar & STOP CH2: TJ399 Oscilloscope Location of Adjustment Parts Observation Waveform H-Axis: 10us/div V-Axis: 50mv/div...

  • Page 15: Audio Circuit Adjustment Method

    All manuals and user guides at all-guides.com 2-3. AUDIO CIRCUIT ADJUSTMENT METHOD 1. Audio REC Bias Mode Adjustment Parts Check Point Test Equipments Test Tape Input Signal +: TP1 ) R292 –: TP2 Audio level meter Blank tape Without signal (A/C HEAD PCB) Location of Adjustment Parts Observation Waveform...

  • Page 16: Section 3. Trouble Shooting Flow Chart

    All manuals and user guides at all-guides.com TROUBLE SHOOTING FLOW CHART SECTION 3. 3-1. POWER CIRCUIT • When change the parts which are out of order, first, remove the power plug from the socket and then discharge the voltage across between both terminals of C807. (Use an external scores of KΩ resistance) •...
  • Page 17 All manuals and user guides at all-guides.com Are D809, Q801, Q802, R805 Change. and R806 normal? Is the secondary voltage EVER 5.8V and -28V normal? Are R810, D808 and Change F802 normal? Change Are R804 and D802 normal? Is IC801 normal? Change Is each voltage of secondary circuit normal?

  • Page 18: Logic Circuit

    All manuals and user guides at all-guides.com 3-2. LOGIC CIRCUIT Digitron does not operate. Is+5V supplied to Check the Is+5V supplied to pin of IC701? Fuse of F802. CATHOD of D712? Check the connector and pattern. Is-24V supplied to pin of IC701? Is-28V at D614 Check D814 and anode?
  • Page 19 All manuals and user guides at all-guides.com Digitron is lit but key do not operate. Is each key pulse Check key matrix applied to pin , circuit. and of IC701? Check the pin serial of pin , ~ of IC701. 65 67 It has not power-failure compensation...
  • Page 20 All manuals and user guides at all-guides.com When change the channel broadcast signal is not received. Is the external ANT. Change and check the connected to RF IN of connection of CABLE VCR and RF OUT of TV? Is the Power of VCR Power On and select ON and the VCR the VCR mode by...

  • Page 21: Servo/Syscon Circuit

    All manuals and user guides at all-guides.com 3-3. SERVO/SYSCON CIRCUIT Playback picture is not good. Noise appears Adjust although adjusting tracking. tracking. Noise shakes up Noise appears Check and and down on the although change re-adjust the screen. cassette tape. Path of Deck.
  • Page 22 All manuals and user guides at all-guides.com Playback picture is not good. Noise appears Check Flow A. on the screen whole. Are SW pulse and Is SW pulse supplied Check D.PG input HA SW applied to from pin of IC601? and connector.
  • Page 23 All manuals and user guides at all-guides.com Drum M/T loading stops. Check power circuit. Is Motor 12V supplied? Is pin D.FG of Check C505, R506, R507 IC601 supplied? and C516. Is pin D.PWM (pin ) Check IC601. of IC601 supplied? Check connector and Motor.
  • Page 24 All manuals and user guides at all-guides.com Drum M/T and Capstan M/T rotate at regular speed (In REC mode). Is C. Sync applied to Check C. Sync of pin of IC601? VIDEO IC and Pattern. Check Motor. Emergency mode when connecting the Power cord.
  • Page 25 All manuals and user guides at all-guides.com Cassette is not inserted. Check power circuit. Is Motor 12V supplied? Is there the changes Check connector. Check DECK part. CAM DATA when CST IN? Is 5V applied to pin Is 5V supplied at Check PATTERN.

  • Page 26: Audio Circuit

    All manuals and user guides at all-guides.com 3-4. AUDIO CIRCUIT No sound in the playback mode. Is the output at pin Is 9V applied to pin Check Q204 and of IC201? of IC201? power circuit. Is 5V applied to pin of IC201? Check IC601.
  • Page 27 All manuals and user guides at all-guides.com No sound in the playback mode after reccording. Is the signal applied to Check circuit adjacent pin of IC201? to IC151. Is 5V applied to Check IC601. pin of IC201? Is there output at Check IC201.

  • Page 28: Video Circuit

    All manuals and user guides at all-guides.com 3-5. VIDEO CIRCUIT A.EE MODE PIcture N.G Is video signal input Check PIF circuit into pin of IC151? and LINE IN JACK. Is 12V supplied at Check ON/OFF 12V circuit. of IC151? Check IC601 pin.
  • Page 29 All manuals and user guides at all-guides.com B. PB VIDEO SIGNAL N.G Is envelope output from Is 5V supplied at Check power IC401 , pins? IC401 pin? circuit. Is sw pulse input into Check IC601 IC401 pin? pin. Claen head or change head.
  • Page 30 All manuals and user guides at all-guides.com C. REC VIDEO SIGNAL N.G Check EE mode. Is Luminance and Color Is signal input into signal output Check INPUT selector circuit. IC301 pin? from IC301 pin? Is REC signal input Check Q311, Q312. Check R399, R491.
  • Page 31 All manuals and user guides at all-guides.com D . OSD Character N.G Is 5V supplied at ICS01 and pins? Check ON/OFF 5V. Check oscillation of ICS01 , . Check XS01 (14.3MHz). 16 17 Check serial data (ICS01 pin). Check IC601. Change ICS01 and check OSD circuit.
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  • Page 46: Voltage Chart

    All manuals and user guides at all-guides.com VOLTAGE CHART SECTION 6. 6-1. IC VOLTAGE (SP MODE) 1. IC151 (MC14053B) MODE MODE LINE LINE PIN NO PIN NO 12.0 12.0 12.0 12.0 12.0 2. ICS01 (168K88E6ML) MODE MODE LINE LINE PIN NO PIN NO...
  • Page 47 All manuals and user guides at all-guides.com 3. IC701 (M34240M2-XXXSP) MODE MODE PIN NO PIN NO -7.5 -19.9 -20.1 -23.2 -23.3 -23.3 -23.3 -23.3 -23.6 -23.3 -23.3 -23.3 -20.1 -23.3 -20.1 -23.3 -23.3 -20.1 -23.2 -23.2...
  • Page 48 All manuals and user guides at all-guides.com 4. IC201 (BA7790LS) MODE MODE PIN NO PIN NO -1.5 5. IC303 (LC7975) MODE MODE REC/PB REC/PB PIN NO PIN NO...
  • Page 49 All manuals and user guides at all-guides.com 6. IC301 (LA7184) MODE MODE PIN NO PIN NO...
  • Page 50 All manuals and user guides at all-guides.com 7. ICA01 (LA7374) MODE MODE PIN NO PIN NO 8. IC602 (TA7288P, DBL2018C) MODE MODE REC/PB REC/PB PIN NO PIN NO 12.6 12.6 9. IC606 (MN1380L) MODE REC/PB PIN NO...
  • Page 51 All manuals and user guides at all-guides.com 10. IC605 (4013B) MODE MODE REC/PB REC/PB PIN NO PIN NO 11. IC601 NAME ASSIGNMENT ACTIVE NAME ASSIGNMENT ACTIVE CTL/TEST CONTROL PULSE TEST PORT PULSE TRICK/H TRICK/HIGH HIGH VS/SHARP E.E. : VS TUNING, PULSE REC (L) REC : LOW...
  • Page 52 All manuals and user guides at all-guides.com NAME ASSIGNMENT ACTIVE NAME ASSIGNMENT ACTIVE Xcout 32.768KHz OSC OUT CLAMPR REFERENCE TO CTL CIRCUIT TV/LINE TV/LINE : PORT CTLAMPout REFERENCE TO CTL CIRCUIT LM/ON LOADING MOTOR ON HIGH AMPC REFERENCE TO CTL CIRCUIT LM F/R LOADING MOTOR FWD/RVS CTLAMPin...
  • Page 53 All manuals and user guides at all-guides.com 6-2. TR VOLTAGE (SP MODE) 1. PIF & INPUT SELECTOR 2. AUDIO * TV mode, ( ) Line mode * PB mode, ( ) REC mode Port Port Emitter Colletor Base Emitter Colletor Base Tr No.

  • Page 54: Section 8. Disassembly

    All manuals and user guides at all-guides.com BLOCK DIAGRAM SECTION 4. 4-1. Y.C./HEAD AMP/AUDIO/INPUT SELECTOR BLOCK DIAGRAM 4-2. SYSCON/LOGIC BLOCK DIAGRAM 4-3. PIF/OSD BLOCK DIAGRAM CIRCUIT DIAGRAM SECTION 5. 5-1. CONNECTION DIAGRAM CIRCUIT 5-2. POWER CIRCUIT (SMPS) 5-3. SYSCON CIRCUIT 5-4.
  • Page 55 All manuals and user guides at all-guides.com Part Code Part Name Q'ty Description Remark SET TOTAL AS 97P4803100 POLY BAG FOR SET P.E FOAM 97P4916600 PAD TOP/BOTTOM 97P5031900 BOX CARTON EX300 X SCP150X EX300 MANUAL OWNERS ART PAPER 97P8804212 CABLE CONNECTOR HP-504 (PAL-TYPE) BATTERY 97P0424100...
  • Page 56 All manuals and user guides at all-guides.com Part Code Part Name Q'ty Description Remark 97P0608400 CHASSIS MAIN ABS (HB) 97PC146300 PANEL FRONT AS PCB LOGIC AS PCB MAINAS 97PB0348D- DECK TOTAL AS 97P0455700 COVER TOP SECC T0.6+PVC T0.15 97P0455800 COVER BOTTOM SECC T0.4 97P2440200 BRKT F/L...

  • Page 57: Electrical Parts List

    All manuals and user guides at all-guides.com ELECTRICAL PARTS LIST SECTION 9. 9-1. STANDARD PART NUMBER CODING 9-1-1. RESISTOR CODING 1. Fixed Resistor Coding Tolerance Type of Resistor Type of Resistor Distance Value Example Symbol Tolerance Composition Resistor Code Wattage Code Distance Carbon Resistor...
  • Page 58 All manuals and user guides at all-guides.com 9-1-2. CAPACITOR CODING 1. Normal Value Distance Type Distance (Same as Fixed (Same As (Same as Fixed Code Type Code Voltage Resistor) Fixed Resistor) Resistor) Aluminum 6.3V Barrier Layer Shape Ceramic Electrolytic Characteristic Line Across Mylar Styrol...
  • Page 59 All manuals and user guides at all-guides.com 9-2. ELECTRICAL PARTS LIST ƒNUSE 4 HEAD ONLY ¡ USE 2 HEAD ONLY ¡ª USE DV-F44N/X, F24N/X 9-2-1. PCB MAIN AS REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION CS01 HCLK300JCA...
  • Page 60 All manuals and user guides at all-guides.com REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C325 CEXE1H100A C ELECTRO RS 50V 10MF (5X11) TP C506 CEXF1A470A C ELECTRO RSM 10V 47MF 6.3X7 C326 HCLK120JCA C CHIP CERA SL 50V 12PF J 2012 C507...
  • Page 61 All manuals and user guides at all-guides.com REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C803 CH1BEB221K C CERA AC U/C/V 2.5KV SCB2G221K10BS D606 DS1R481T-- LED IR SIR-48IT C804 CH1BEE332M C CERA AC U/C/V 2.5KV SCE2G332M16BS D606A 97P2334200 HOLDER LED...
  • Page 62 All manuals and user guides at all-guides.com REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION IC301 1LA7184--- IC VIDEO LA7184 (VIDEO 1 CHIP) Q156 TZSR1004-- KSR1004 (AUTO) IC303 1LC7975--- IC VIDEO LC7975 (1HCCD) Q201 TZTC3202Y- KTC3202Y (AUTO) (1959Y) IC601...
  • Page 63 All manuals and user guides at all-guides.com REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION RS08 RD-AZ912J- R CARBON FILM 1/6 9.1K OHM J R221 HRFT331JCA R CHIP 1/10 330 OHM J 2012 R150 HRFT750JCA R CHIP 1/10 75 OHM J 2012...
  • Page 64 All manuals and user guides at all-guides.com REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION R339 HRFT431JCA R CHIP 1/10 430 OHM J 2012 R507 HRFT472JCA R CHIP 1/10 4.7K OHM J 2012 R340 HRFT751JCA R CHIP 1/10 750 OHM J 2012...
  • Page 65 All manuals and user guides at all-guides.com REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION R817 RD-AZ682J- R CARBON FILM 1/6 6.8K OHM J R631 RD-AZ102J- R CARBON FILM 1/6 1K OHM J R818 RD-AZ221J- R CARBON FILM 1/6 220 OHM J...
  • Page 66 SW TACT SKHV10910A GH01 97P2332700 HOLDER DIGITRON DV-F44N, F24N, F54N, F34N § S704 5S50101Z90 SW TACT SKHV10910A GH01 97P2331900 HOLDER DIGITRON DV-F46N, F26N, F48N, F28N § S705 5S50101Z90 SW TACT SKHV10910A G701 D8MT88GK-- DIGITRON (V.F.D) 8MT-88GK S706 5S50101Z90 SW TACT SKHV10910A DCM1312G-- DIGITRON (V.F.D)
  • Page 67 All manuals and user guides at all-guides.com REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION CA18 HCFK103ZCA C CHIP CERA Y5V 50V 0.01MF Z 2012 PA03 4859241920 CONN WAFER YEAW025-08 HCBK103KCA C CHIP CERA X7R 50V 0.01MF K 2012 QA02 TZTC3198Y-...
  • Page 68 All manuals and user guides at all-guides.com 9-2-4. PCB SHUTTLE AS (DV-F54/F34N ONLY) REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION P703 97P8810714 CONN AS (Y10714) 2.0 7P 140MM S751 5S10000002 SW JOG SHUTTLE SRGPJJ-A3 P704 97P6291825...

This manual is also suitable for:

Dv-f26nDv-f48nDv-f28nDv-f54nDv-f34nDv-f44n ... Show all

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