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DAEWOO ELECTRONICS DV-F952N Service Manual

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Service Manual
MODEL : DV-F952N
DAEWOO ELECTRONICS CO., LTD.

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Summary of Contents for DAEWOO ELECTRONICS DV-F952N

  • Page 1 Service Manual MODEL : DV-F952N DAEWOO ELECTRONICS CO., LTD.

  • Page 2: Specifications

    SPECIFICATIONS Frequency response 100 Hz-8KHz SYSTEM Hi-Fi, 20Hz-20kHz Video signal PAL standard colour Signal to noise ratio More than 38 dB PAL/SECAM Hi-Fi More than 60dB channel memory 55 positions Audio Distortion Less than 3% (SP) UHF output signal 30-39 CH (adjustable) Hi-Fi Less than 0.5% 73±3dBuV TAPE TRANSPORT...
  • Page 3 • 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 ELECTRICAL ADJUSTMENT SECTION 2. 2-1. SERVO CIRCUIT ADJUSTMENT METHOD 1. PLAYBACK PHASE Adjustment Parts Checking Point Measuring Equipment Mode Test Tape JPT01 DP-2 Check Oscilloscope Play PT01 PIN ¤Ø • Connection Method Modulator JPT01 PATH JIG PT01 TOP VIEW CH-1 OSCILLOSCOPE CH-2 •...
  • Page 5 2-2. AUDIO CIRCUIT ADJUSTMENT METHOD 1. AUDIO RECORD BIAS Adjustment Parts Checking Point Measuring Equipment Test Tape Input Signal A/C Head PCB R290 Audio level meter None signal TP1(+), TP2(-) • Connection Method S/N: 97P65064HA R290 Audio LEVEL METER HEAD AMP PCB 3.0mVrms –...
  • Page 6 2-3. IF MODULE CIRCUIT ADJUSTMENT METHOD 2-3-1. PAL B/G 2 CARRIER SYSTEM 1. 32.4MHz TRAP Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L101 EE Mode Signal Gen followings • Connection Method PIF PCB (Component Side) minimum P102 P101...
  • Page 7 2. PIF COIL Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L104 EE Mode Signal Gen followings • Connection Method PIF PCB (Component Side) P102 P101 L108 minimum L101 L109 L104 CH-1 Oscilloscope Z101 L103 L105...
  • Page 8 3. AFT COIL Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L105 “A” point EE Mode Signal Gen. followings • Connection Method (Test circuit) PIF PCB (Component Side) Vcc+12V P102 43kΩ P101 L108 L101 L109 CH-1...
  • Page 9 4. SOUND CARRIER Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L190 IC102 #15 EE Mode Signal Gen. followings • Connection Method PIF PCB (Component Side) minimum noise level CH-1 Oscilloscope P102 P101 L108 L101 L109...
  • Page 10 5. LEFT, RIGHT SOUND Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal L109 (LEFT) Oscilloscope Refer to the EE Mode L110 (RIGHT) Signal Gen. followings • Connection Method PIF PCB (Component Side) LEFT P102 P101 L108 L101 L109 L104 Z101...
  • Page 11 6. RF AGC Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the R190 JPT02 EE Mode PM5418 Gen. followings • Connection Method MAIN PCB RF OUT PM5418 Modulator ANT IN RF102 CH-1 RF101 JPT02 Oscilloscope R190 RF103...
  • Page 12 2-3-2. PAL B/G, I NICAM SYSTEM 1. PIF COIL (NICAM) Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L104 EE Mode Signal Gen. followings • Connection Method 97P651111A P102 P101 L108 C181 minimum R163 D101 CH-1...
  • Page 13 2. AFT COIL Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L105 “A” point EE Mode Signal Gen. followings • Connection Method (Test circuit) Vcc+12V 97P651111A P102 43kΩ P101 L108 C181 CH-1 Oscilloscope 33kΩ...
  • Page 14 3. SOUND CARRIER (NICAM) Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L108 EE Mode Signal Gen followings • Connection Method minimum noise level 97P651111A P102 P101 L108 C161 R163 D101 L103 C178 C176 C182 CH-1...
  • Page 15 4. 5.5 (6.0) MHz SOUND Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the L109 EE Mode Signal Gen followings • Connection Method L109 97P651111A P102 P101 L108 C181 R163 D101 CH-1 Oscilloscope L103 C178 C176 C182...
  • Page 16 5. RF AGC Adjustment Parts Checking Point Measuring Equipment Condition of Adj. Input Signal Oscilloscope Refer to the R190 JPT02 EE Mode PM5418 Gen followings • Connection Method MAIN PCB RF OUT PM5418 Modulator ANT IN RF102 CH-1 RF101 JPT02 Oscilloscope R190 RF103...
  • Page 17 4-2. CONNECTION DIAGRAM CIRCUIT(DV-F952N)
  • Page 18 4-3. POWER CIRCUIT...
  • Page 19 4-4. SERVO-LOGIC CIRCUIT...
  • Page 20 4-6. LOGIC CIRCUIT(DV-F952N)
  • Page 21 4-7. HEAD-AMP CIRCUIT...
  • Page 22 4-8. VIDEO CIRCUIT...
  • Page 23 4-9. Hi-Fi AUDIO...
  • Page 24 4-10. PIF NICAM MODULE...
  • Page 25 4-11. PIF/MPX CIRCUIT(2 CARRIER)
  • Page 26 4-12. PIF CIRCUIT...
  • Page 27 4-13. OSD CIRCUIT...
  • Page 28 4-14. VPS/PDC CIRCUIT...
  • Page 29 4-15. IN/OUT SW CIRCUIT I...
  • Page 30 4-16. IN/OUT SW CIRCUIT II...
  • Page 31 4-17. REMOCON CIRCUIT(DV-F952N)
  • Page 32 VOLTAGE CHARTS SECTION 5. Voltage Charts 1. IC151 (MC14053B) MODE MODE REMARK REMARK PIN NO PIN NO Conditions : Line input and PB mode 2. ICS01 (168K88E6ML) MODE MODE REMARK REMARK PIN NO PIN N Conditions : No signal...
  • Page 33 3. IC701 (M34240M2-XXXSP) MODE MODE PIN NO PIN NO -7.8 -17.2 -14.1 -17.1...
  • Page 34 IC301 DC VOLTAGE (LA7437) MODE MODE PIN NO PIN NO IC302 DC VOLTAGE (LA89970) MODE MODE PIN NO PIN NO...
  • Page 35 ICS02 DC VOLTAGE (LVA519S) MODE PIN NO ICS02 DC VOLTAGE (LVA519S) MODE MODE PIN NO PIN NO...
  • Page 36 IC201 (HI-FI AUDIO, TDA9614H) MODE MODE PIN NO PIN NO PULSE PULSE HI-FI: 5 NOR: 0...
  • Page 37 ICB01 (AUDIO HEAD AMP, BA7743s) MODE MODE PIN NO PIN NO SP :0 SP :0 LP :5 LP :5 PULSE PULSE AUDIO PART TR PORT COLLECTOR BASE EMITTER Tr NO Q200 0 (0) 0 (1.5) 0 (0) Q201 0 (0) 0 (1.5) 0 (0) Q202...
  • Page 38 9. IC601 ( µ-COM) NAME ASSIGNMENT ACTIVE NAME ASSIGNMENT ACTIVE CTL/TEST CONTROL PULSE TEST PORT PULSE RESET RESET INPUT PORT 16MHZ OSC IN VS/SHARP E.E. : VS TUNING, PULSE Xout 16MHZ OSC OUT PLAYBACK : SHARPNESS CLK/SEL RESET : 32KHZ OSCILLATION CAP PWM CAPSTAN CONTROL PWM PULSE...
  • Page 39 NAME ASSIGNMENT ACTIVE NAME ASSIGNMENT ACTIVE CTL+SWout REFERENCE TO CTL CIRCUIT BRKADJ SLOW BREAK ADJUST CTL + REFERENCE TO CTL CIRCUIT PGADJ PG DLAY ADJUST CTL- REFERENCE TO CTL CIRCUIT PATH PATH ADJUST AFT INPUT PORT C.SYNC C.SYNC INPUT PORT PULSE VFD DATA VFD SERIAL DATA OUT...
  • Page 40 7-2. PACKING AS (DV-F952N) Part Code Part Name Q'ty Description 97P4921200 PAD RIGHT/LEFT 97P4803100 POLY BAG FOR SET P.E FOAM 97PB0959S SET TOTAL ASS'Y 97P5039900 BOX CARTON EX300ƒNS C P 1 5 0ƒNE X 3 0 0 97P8804213 CABLE RF PAL 1.5M...
  • Page 41 7-3. SET TOTAL AS (DV-F952N) Part Code Part Name Q'ty Description 97P0608400 CHASSIS MAIN ABS(HB) 97PD130800 PANEL FRONT AS 97PD132600 PCB LOGIC AS 97PD130300 PCB MAIN AS 97PB0588D- DECK TOTAL AS 97PB181500 PCB HEAD AMP AS 97PB208800 PCB A/V SW AS...

  • Page 42: Electrical Parts List

    ELECTRICAL PARTS LIST SECTION 8. 8-1. STANDARD PART NUMBER CODING 8-1-1. 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 478 ....0.47Ω ±1% –A 1/6W 2.5 mm...
  • Page 43 8-1-2. CAPACITOR CODING 1. Normal Tolerance Value Distance Type Voltage (Same as Fixed (Same as Fixed (Same As Resistor) Code Type Code Voltage Resistor) Fixed Resistor) Aluminum 6.3V Barrier Layer Shape Ceramic Electrolytic Characteristic Line Across Mylar Styrol Metalized Polyester Mica 100V Tantal...
  • Page 44 8-2. ELECTRICAL PARTS LIST PCB MAIN AS REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION CS01 HCLK240JCA C CHIP CERA 50V SL 24PF J 2012 C191 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP CS02 HCLK240JCA C CHIP CERA...
  • Page 45 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C337 HCFK103ZCA C CHIP CERA 50V Y5V 0.01MF Z 2012 C606 HCQK180JCA C CHIP CERA 50V CH 18PF J 2012 C338 HCFK103ZCA C CHIP CERA 50V Y5V 0.01MF Z 2012 C607 HCQK180JCA C CHIP CERA...
  • Page 46 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C857 CEXF1E470V C ELECTRO 25V RSS 47MF (5X11) TP JPT02 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING C858 CEXF1C470A C ELECTRO 16V RSM 47MF (6.3X7) TP JPT03 85801065GY WIRE COPPER...
  • Page 47 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION Q179 TZTK30AGR- KTK30A-GR (AUTO) R176 HRFT103JCA R CHIP 1/10 10K OHM J 2012 Q183 TZSR1001-- KSR1001 (AUTO) R178 HRFT105JCA R CHIP 1/10 1M OHM J 2012 Q184 TZTC3198Y- KTC3198Y-(1815Y) (AUTO)
  • Page 48 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION R609 RD-AZ471J- R CARBON FILM 1/6 470 OHM J R327 HRFT102JCA R CHIP 1/10 1K OHM J 2012 R328 HRFT103JCA R CHIP 1/10 10K OHM J 2012 R610 RD-AZ471J- R CARBON FILM...
  • Page 49 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION R851 RD-4Z122J- R CARBON FILM 1/4 1.2K OHM J S603 TRPT38PB3F TR PHOTO RPT-38PB3F R852 RD-4Z622J- R CARBON FILM 1/4 6.2K OHM J S603A 97P2332600 HOLDER TAPE SENSOR R853 RD-4Z622J- R CARBON FILM...
  • Page 50 PCB IF MODULE AS (2 CARRIER) REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C101 CCXF1H103Z C CERA 50V F 0.01MF Z (TAPPING) L105 56E139K467 COIL AFT DRF-1334 C104 CCXF1H103Z C CERA 50V F 0.01MF Z (TAPPING) L106 5CPX829K-- COIL PEAKING...
  • Page 51 PCB IF MODULE AS (NICAM) REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C101 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C176 CEXF1H109V C ELECTRO 50V RSS 1MF (5X11) TP C102 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 C177...
  • Page 52 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION R152 HRFT102JCA R CHIP 1/10 1K OHM J 2012 R163 RD-AZ220J- R CARBON FILM 1/6 22 OHM J R153 HRFT101JCA R CHIP 1/10 100 OHM J 2012 R164 HRFT105JCA R CHIP...
  • Page 53 PCB A/V-1 SW AS REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION CV01 CMXM2A104J C MYLAR 100V 0.1MF J TP JL01 97P6310500 SOCKET RGB DSR9404B (BLACK) CV02 CMXM2A104J C MYLAR 100V 0.1MF J TP JL02 97P6310500 SOCKET RGB...
  • Page 54 PCB A/V-1 SW OPTION TABLE 1. DV-F952N REF. PART CODE PART NAME PART DESCRIPTION PL05 97P6271700 CONN WAFER (ANGLE) 00-8283-0911-00000...
  • Page 55 A/V-II SW AS REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION CL01 CCXF1H103Z C CERA 50V F 0.01MF Z (TAPPING) DL29 DZA105R1L- DIODE ZENER MA 1051L (5R1) CL02 CEXF1C470A C ELECTRO 16V RSM 47MF (6.3X7) TP DL30 DZN4148--- DIODE...
  • Page 56 PCB A/V-2 SW OPTION TABLE 1. DV-F952N REF. PART CODE PART NAME PART DESCRIPTION PL05 97P6271700 CONN WAFER (ANGLE) 00-8283-0911-00000 PCB LOGIC I AS (DV-F952N) REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C701...
  • Page 57 PCB LOGIC II AS (DV-F952N) REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION P703 97P8810714 CONN AS (Y10714) 7H-7S 140MM S705 5S50101089 SW TACT SKHH10910A S702 5S50101089 SW TACT SKHH10910A S706 5S50101089 SW TACT...
  • Page 58 PCB FRONT A/V AS REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION PL07 97P6311300 JACK PIN DSP-9407A P704 97P885X074 CONN AS 9H-10S 430MM...
  • Page 59 PCB HEAD AMP AS REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION B001 97P0462300 CASE SHIELD PREAMP ET T0.4 CB02 HCFK103ZCA C CHIP CERA 50V Y5V 0.01MF Z 2012 B002 97P0462400 COVER SHIELD PREAMP ET T0.3 CB03 HCFK103ZCA...
  • Page 60 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION C204 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 LA04 5CPX101J-- COIL PEAKING PL 100UH J (TAPPING) C205 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 LA05 5CPX180J-- COIL PEAKING 18UH J RADIAL C206...
  • Page 61 REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION RA19 HRFT202JCA R CHIP 1/10 2K OHM J 2012 RK08 HRFT391JCA R CHIP 1/10 390 OHM J 2012 RA20 HRFT102JCA R CHIP 1/10 1K OHM J 2012 RK09 HRFT104JCA R CHIP...
  • Page 62 PCB POWER AS REF. PART CODE PART NAME PART DESCRIPTION REF. PART CODE PART NAME PART DESCRIPTION CN11 97P62E08A5 CONN B/B 5034 DIRECT 2.5 5P DUF5404LS- DIODE UF5404L-5702 400V 3A CN22 97P62E08A8 CONN B/B 5034 DIRECT 2.5 8P DUF4007L-- DIODE UF4007L-5700 1000V 1A CMXF2A104K C MYLAR...