Audiovox AVP-7180 Service Manual
  1. Manuals
  2. Brands
  3. Audiovox Manuals
  4. VCR
  5. AVP-7180
  6. Service manual
Audiovox AVP-7180 Service Manual

Audiovox AVP-7180 Service Manual

Hide thumbs Also See for AVP-7180:
Table of Contents

Advertisement

Quick Links

Download this manual
AUDIOVOX SPECIALTY MARKETS CO., LP
23319 COOPER DR.
ELKHART, IN 46514
(219)266-1886
SERVICE MANUAL
$VIDEO CASSETTE PLAYER
AVP-7180
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE "SAFETY
PRECAUTIONS", IN THIS MANUAL.
DIGITAL AUTO TRACKING / FULL AUTOMATIC SYSTEM
POWER
STOP/
REW
PLAY
EJECT
HI-FI
AVP-7180
STEREO
CST IN DEW
REMOTE
SENSOR
L - Hi-Fi - R
FFWD

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AVP-7180 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Audiovox AVP-7180

Summary of Contents for Audiovox AVP-7180

  • Page 1 SERVICE MANUAL $VIDEO CASSETTE PLAYER AVP-7180 CAUTION BEFORE SERVICING THE CHASSIS, READ THE "SAFETY PRECAUTIONS", IN THIS MANUAL. AUDIOVOX SPECIALTY MARKETS CO., LP 23319 COOPER DR. ELKHART, IN 46514 (219)266-1886 HI-FI AVP-7180 STEREO DIGITAL AUTO TRACKING / FULL AUTOMATIC SYSTEM...

  • Page 2: Safety Check After Servicing

    • 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. 1.
  • Page 3 TOTAL CONTENTS SECTION 1. GENERAL ........................2 SECTION 2. CABINET & MAIN FRAME..................6 SECTION 3. ELECTRICAL......................13 SECTION 4. MECHANISM ......................34...
  • Page 4 SECTION 1. GENERAL CONTENTS 1-1. SPECIFICATIONS..........................3 1-2. IDENTIFICATION AND OPERATION OF CONTROLS ...............4...

  • Page 5: Specifications

    1-1. SPECIFICATIONS FORMAT VHS standard Playback System Video: 2 rotary hends helical scanning system. -Luminance; FM azimuth Playback. -Croma; Converted sub-carrier phase shift Playback. Audio: 2 rotary hends helical scanning system. -Luminance; FM azimuth Playback. -Croma; Converted sub-carrier phase shift Playback. Video Signal System NTSC type color signal Tape Width...
  • Page 6 1-2. IDENTIFICATION AND OPERATION OF CONTROLS &* Hi-Fi AVP-7180 STEREO DIGITAL AUTO TRACKING / FULL AUTOMATIC SYSTEM CST IN DEW REMOTE STOP/ SENSOR POWER PLAY L - Hi-Fi - R EJECT ! Casette compartment & Cassette-In lamp/ Hi-Fi L When the cassette is inserted, the CST-IN lamp will @ Power key light up in red.
  • Page 7 125V 2A ANT. VIDEO DC 12V AUDIO & ! FUSE HOLDER % AUDIO OUT L/R This main line fuse is accessible with the external fuse Connect this terminal to AUDIO IN terminal of your holder simply by unscrewing the cap. If the main line television, using the RCA cord provided.
  • Page 8 SECTION 2. CABINET & MAIN FRAME CONTENTS 2-1. CABINET DISASSEMBLY ......................7 1) COVER TOP 2) COVER BOTTOM 3) PANEL FRONT AS. 2-2. CIRCUIT BOARD DISASSEMBLY....................9 1) PCB MAIN AS. 2-3. EXPLODED VIEW..........................10 1) MAIN CHASSIS 2) PANEL FRONT 2-4. PACKING ASSEMBLY........................12...

  • Page 9: Cabinet Disassembly

    2-1. CABINET DISASSEMBLY 1) COVER TOP • Remove four screws (see Fig 2-1) • Lift the COVER TOP with holding the back of it and remove it. Fig. 2-1 2) COVER BOTTOM • Remove one screw to remove the COVER BOTTOM (see Fig 2-2) Fig.
  • Page 10 3) PANEL FRONT AS. • Remove the COVER TOP. (See Fig 2-1) • Remove the COVER BOTTOM. (See Fig 2-2) • Press five stoppers in direction of the arrows to disengage - the top side of the panel front toward - to remove it (See Fig 2-3).

  • Page 11: Circuit Board Disassembly

    2-2. CIRCUIT BOARD DISASSEMBLY 1) PCB MAIN AS. • Remove six screws and disassemble the DECK mechanism. (see Fig 2-5A) •Press two stoppers in direction of the arrow (see Fig 2-5B) and separate the Main Chasis from the Main PCB by lifting the PCB (see Fig 2-5C).

  • Page 12: Exploded View

    2-3. EXPLODED VIEW 1) MAIN CHASSIS ASS'Y PART CODE Part Name Q'ty Description Remark 97P0610410 CHASSIS MAIN HI-PS(V0) 97P0800600 SBR 80 BLK 97PP318910 PANEL FRONT AS DV-S102NY 97P0471310 COVER BOTTOM SECC TO . 4 7173401211 SCREW TAPPTITE TT2 BIN 4X12 MFZN COVER BOTTOM FIX 97PE101600 PCB MAIN AS...
  • Page 13 2) PANEL FRPMT ASS'Y PART CODE Part Name Q'ty Description Remark 97P0318900 PANEL FRONT HI-PS(VO) 97P1358300 KNOB FUNCTION ABS(NATURAL) 97P4217300 CUSHION DOOR FELT T1.0 97P3038000 SPRING F/L DOOR SWPB 1082J 97P1820800 DOOR F/L 97P1622000 WINDOW REMO PMMA 97P1713400 INDICATOR DEW GPPS...

  • Page 14: Packing Assembly

    2-4. PACKING ASSEMBLY PART CODE Part Name Q'ty Description Remark 97P4925400 PAD FRONT/BACK 97P4801300 POLYBAG FOR SET P.E FOAM 97P5045900 BOX CARTON EX225*K200*EX225 97P9560000 MANUAL OWNERS ALL MODEL(DV-S102N-SJ) 97P88OP315 CABLE RCA 2P-2P 1.5M 97P0424100 COVER ACCESSORY LD-PE TO.1 97P7703100 PLUG DC CAR DLP-1033A5...

  • Page 15: Electrical Adjustment

    SECTION 3. ELECTRICAL 3-1. ELECTRICAL ADJUSTMENT 1) SERVO-LOGIC CIRCUIT ADJUSTMENT METHOD • VIDEO HEAD SWITCHING POSITION Adj. Location Checking Point Measuring Equipment Mode Test Tape PT01 3 PIN RV501 Oscilloscope Play DN-1 VIDEO OUT CONTENTS 1) Play back the test tape. 2) Set the oscilloscope in the CHOP mode connect the CH1 to SW pluse PT01 3 PIN the CH2 to VIDEO OUT with CH1 triggering.

  • Page 16: Circuit Diagrams

    3-2. CIRCUIT DIAGRAMS 1) CONNECTION DIAGRAM...
  • Page 17 2) POWER CIRCUIT DIAGRAM...
  • Page 18 1-1 IC504 #1 PLAY MODE: AC 1-2 IC601 #29 PLAY MODE: DC 1-3 P502 #6 PLAY MODE: DC VOLT/DIV 500mV/DIV VOLT/DIV 1V/DIV VOLT/DIV 1V/DIV TIME/DIV 5ms/DIV TIME/DIV 5ms/DIV TIME/DIV 2ms/DIV 1-4 P502 #3 PLAY MODE: DC 1-5 IC501 #30 PLAY MODE: DC VOLT/DIV 1V/DIV VOLT/DIV...
  • Page 19 3) SERVO SYSCON CIRCUIT DIAGRAM...
  • Page 20 2-1 IC301 #29 PLAY MODE: AC 2-2 IC302 #1 PLAY MODE: AC 2-3 IC302 #3 PLAY MODE: AC VOLT/DIV 100mV/DIV VOLT/DIV 100mV/DIV VOLT/DIV 100mV/DIV TIME/DIV 10ms/DIV TIME/DIV 10ms/DIV TIME/DIV 10ms/DIV 2-4 IC301 #39 PLAY MODE: AC 2-5 IC301 #6 PLAY MODE: AC 2-6 IC301 #59 PLAY MODE: AC VOLT/DIV 500mV/DIV...
  • Page 21 4) VIDEO/NOR & AUDIO CIRCUIT DIAGRAM...
  • Page 22 2-1 IC401 #13 PLAY MODE: AC 2-1 IC401 #1 PLAY MODE: AC VOLT/DIV 100mV/DIV VOLT/DIV 500mV/DIV TIME/DIV 2ms/DIV TIME/DIV 2ms/DIV...
  • Page 23 5) Hi-Fi/PRE-AMP CIRCUIT DIAGRAM...
  • Page 24 6) A/V IN/OUT CIRCUIT DIAGRAM...
  • Page 25 3-3. COMPONENTS LOCATION GUIDE ON PCB 1) PCB & CONNECTOR GUIDE P504 CAM A CAM B CAM C P501 Vcc (E 5V) F(-) / R(+) CAP. FG CTL REF C.PWM I-LIMIT Vcc (13V) IC-GND PJ201 CTL (+) CTL (-) PB AUDIO HEAD P503 LM (+) LM (-)
  • Page 26 2) COMPONENTS LOCATION GUIDE I.C. & X-TAL TR & SEMI VOLUME CONNECTOR & SENSO LOCATION POSITION LOCATION POSITION LOCATION POSITION IC301 Q301 D601 IC302 Q302 P401 IC401 Q351 PT01 IC501 Q601 P501 IC502 Q251 P502 IC503 Q701 P503 IC504 Q702 P504 H701 Q801...

  • Page 27: Electrical Parts List

    3-4. ELECTRICAL PARTS LIST 1) STANDARD PART NUMBER CODING RESISTER CODING 1. Fixed Resistor Coding Tolerance Type of Resistor Type of Resistor Distance Value Symbol Tolerance Example Composition Resistor Code Wattage Code Distance Carbon Resistor ±1% –A 1/6W 2.5 mm 478 ....0.47Ω...
  • Page 28 RESISTER 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 Metalized Polyester Mica 100V Tantal 125V 160V...
  • Page 29 2) ELECTRICAL PART LIST BY ASSEMBLIES LVL LOC PART-CODE PART-NAME PART-DESC LVL LOC PART-CODE PART-NAME PART-DESC 1+++ 01 97PC0206P- PACKING AS DV-S104NY-RJ IC502 1BA6209--- BA6209 C001 97P4925400 PAD F/B IC504 1MC4558C-- IC OP AMP MC4558C(KA4558) 2++ C002 97P5045900 BOX CARTON EX225*K200*EX225 IC801 1K1A7806P1...
  • Page 30 LVL LOC PART-CODE PART-NAME PART-DESC LVL LOC PART-CODE PART-NAME PART-DESC C331 HCLK101JCA C CHIP CERA 50V SL 100PF J 2012 R309 HRFT152JCA R CHIP 1/10 1.5K OHM J 2012 C352 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 201 R310 HRFT102JCA R CHIP 1/10 1K OHM J 2012...
  • Page 31 LVL LOC PART-CODE PART-NAME PART-DESC LVL LOC PART-CODE PART-NAME PART-DESC C351 CEXF1H100A C ELECTRO 50V RSM 10MF (5X7) TP C254 CCZF1H103Z 79TD1664 C CERA 50V F 0.01MF Z C355 CEXF1H109A C ELECTRO 50V RSM 1MF (4X7) TP C256 CCZF1H103Z 79TD1664 C CERA 50V F 0.01MF Z C356 CEXF1H109A...
  • Page 32 LVL LOC PART-CODE PART-NAME PART-DESC LVL LOC PART-CODE PART-NAME PART-DESC JP008 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP062 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP009 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP063 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING JP010 85801065GY WIRE COPPER...
  • Page 33 LVL LOC PART-CODE PART-NAME PART-DESC LVL LOC PART-CODE PART-NAME PART-DESC JP117 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING R518 RD-AZ332J- 79TD0094 R CARBON FILM 1/6 3.3K OHM J JP118 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING R519 RD-AZ153J- 79TD2022 R CARBON FILM 1/6 15K OHM J JP119 85801065GY...
  • Page 34 LVL LOC PART-CODE PART-NAME PART-DESC LVL LOC PART-CODE PART-NAME PART-DESC R713 RD-AZ221J- 79TD0111 R CARBON FILM 1/6 220 OHM J R721 RD-AZ331J- 79TD0122 R CARBON FILM 1/6 330 OHM J R714 RD-AZ511J- 79TD0151 R CARBON FILM 1/6 510 OHM J R802 RD-AZ472J- 79TD0117 R CARBON FILM 1/6 4.7K OHM J...

  • Page 35: Table Of Contents

    SECTION 4. MECHANISM CONTENTS 4-1. DESCRIPTION OF THE MECHANISM 1) Characteristic of the S1-MECHA Mechanism................35 2) Description of the Modes ......................36 3) Timing Chart of the S1-MECHA Mechanism................41 4) S1-MECHA Deck wire diagram....................42 4-2. MAINTENANCE AND CHECKING OF MAJOR SYSTEM 1) Names of Major Parts and Area ....................44 2) Maintenance and a Periodic Checking List..................46 3) Jigs and Tools..........................48...

  • Page 36: Description Of The Mechanism

    4-1. DESCRIPTION OF THE MECHANISM 1). CHARACTERISTIC OF THE S1-MECHA MECHANISM ! The S1-MECHA Deck satisfies both the VHS and NTSC/PAL specifications. @ The S1-MECHA Deck consists of three motors such as Drum Motor, Capstan Motor and L/C Motor. # The Front Loading of the S1-MECHA Deck is operated by the power of L/C Motor. $ S1-MECHA Deck System consists of Five operating Modes such as EJECT, FF/REW, BRAKE/STOP, REVIEW, and PLAY/CUE/RECORD Mode.

  • Page 37: Description Of The Modes

    2). DESCRIPTION OF THE MODES EJECT MODE A. By rotating the L/C motor that runs the front loading to clockwise and counter-clockwise direction, the EJECT mode conducts the cassette-in/out operations. • Cassette-in operation: When a cassette is inserted with an adequate pressure, F/L Drive Rack falls out. And the cassette-in driving starts on the point of time when the light is transmitted at the Start Sensor.
  • Page 38 FF/REW MODE A. This is the mode that conducts the fast forward winding and rewinding of tape by rotating the Capstan Motor at high speed to the clockwise and counter-clockwise direction and running the Reel Table. • The BRAKE mode works when the END/START sensor is on during the FF/REW operation, and it conducts the review and cue operation temporarily.
  • Page 39 BRAKE/STOP MODE A. The BRAKE mode is configured between the FF/REW mode and the Loading section. When the PLAY, STOP or EJECT button is pushed during FF/REW, S/T-Reel Table stops immediately so that it prevents the loosening of cassette tape by the law of inertia. Therefore the BRAKE mode becomes the criteria of the unloading location when the power is off.
  • Page 40 REVIEW MODE A. This mode is obtained by pressing the REW button in the state of Playback. L/C motor rotates and CAM S/W mode transfers to REVIEW mode and Capstan Motor rotates backward with a fixed speed. At this time, a cassette transits backward similarly. B.
  • Page 41 PLAY/CUE/RECORD MODE A. The PLAY/CUE/RECORD mode performs the playback and recording while moving the tape from the S-Reel Table to the T-Reel Table at a constant speed. • When the Slow function is added, it can run at the PLAY mode. B.

  • Page 42: Timing Chart Of The S1-Mecha Mechanism

    3). TIMING CHART OF S1-MECHA MECHANISM...

  • Page 43: S1-Mecha Deck Wire Diagram

    4). S1-MECHA DECK WIRE DIAGRAM WIRE DIAGRAM á * APPLIED TO ONLY RECORD MODEL: (£ £ : ITEM) á (£ £ : ITEM IS DELETED AT VCP MODEL)
  • Page 44 CONNECTOR PIN ARRANGEMENT A. DRUM HEAD B. FE HEAD C. ACE HEAD (2HEAD MONO) VR 1 FE HEAD CTL HEAD (+) COMMON CTL HEAD (–) VL 1 AUDIO HEAD AUDIO HEAD AUDIO ERASE D. DRUM MOTOR E. CAPSTAN MOTOR F. CAM SWITCH VCC (12V) VCC(5V) CAM A...

  • Page 45: Maintenance And Checking Of Major System

    4-2. MAINTENANCE AND CHECKING OF MAJOR SYSTEM 1). NAMES OF MAJOR PARTS AND AREA ASSEMBLING DIAGRAM OF DECK A. Deck top view...
  • Page 46 B. Deck bottom view...

  • Page 47: Maintenance And A Periodic Checking List

    2). MAINTENANCE AND PERIODIC CHECKING LIST MAINTENANCE AND GENERAL INFORMATION A. To guarantee the perfect performance and the function of S1-MECHA Deck and also to use the tape for the long life, you should conduct the periodic maintenance and checking. •...
  • Page 48 MAJOR PARTS SERVICE SCHEDULE Conduct the maintenance and the replacement of the major parts according to the below table based on the actual using time Maintenance period (Hrs) Name 1000 2000 3000 4000 5000 DRUM PRICE AS ƒN ¡ ƒN ¡...

  • Page 49: Jigs And Tools

    3). JIGS AND TOOLS JIG AND TOOL LIST ITEMS MODEL FIG. NO. REMARKS ALIGNMENT TAPE –NTSC: SP MONOSCOPE 7KHz Adjustment & SP COLOR BAR 1KHz Check of Odometer –PAL : SP MONOSCOPE 6KHz SP COLOR BAR 1KHz CLEANING TAPE DHO-602(DAEWOO) Cleaning of the Odometer (DAEWOO) CST TORQUE METER...
  • Page 50 SKETCH OF JIGS AND TOOLS...

  • Page 51: Disassembly And Replacement

    4-3. DISASSEMBLY AND REPLACEMENT * Warning: The disassembly of the deck mechanism should be conducted at the EJECT mode and the assembling is proceeded by reversing the order. 1). DISASSEMBLY OF THE DECK TOTAL ASSEMBLY (PICTURE 3-1) a. Disassemble the top cover and front panel. b.

  • Page 52: Replacement Of The F/Loading Assembly

    2). REPLACEMENT OF THE F/LOADING ASSEMBLY (PICTURE 3-2) To begin with, disassemble the assembly pushing the Rack Spring * in the direction of an arrow. a. Unscrew 2 of the Top Plate fixing screws @ tightened with the Main Base Press ! and separate the Top Plate # from the main body.

  • Page 53: Replacement Of The S/T-Reel Table Assembly

    3). REPLACEMENT OF THE S/T-REEL TABLE ASSEMBLY To begin with, the Front Loading ass'y should be disassembled. a. Release the T-Sub Brake Spring @ connected to the Main Base Press ! from the hook. b. Turn the T-Sub Brake Ass’y # to the counter-clockwise direction, and lift it up for disassembly. c.

  • Page 54: Replacement Of The Pinch Lever Total Assembly

    4). REPLACEMENT OF THE PINCH LEVER TOTAL ASSEMBLY (PICTURE 3-4) a. Push the hook area of the Cassette Cap Opener ! to the Y-axle direction and lift it up to separate from the Main Base Press @. Be cautious of breakage of Hook. b.

  • Page 55: Replacement Of The S/T-Slant Pole Assembly

    5). REPLACEMENT OF THE S/T SLANT POLE ASSEMBLY (PICTURE 3-5) Disassemble the Pinch Lever Total Ass’y first before the S/T Slant Pole Ass’y. a. Turn over the deck, and unscrew @ of the L/C BRKT Total Ass’y @ fixing screws # tightened with the Main Base Press !.

  • Page 56: Replacement Of The Drum Price Assembly

    6). REPLACEMENT OF THE DRUM PRICE ASSEMBLY (PICTURE 3-6) a. Turn over the Deck Assembly. b. Unscrew 3 of the fixing screws @ for the Drum Price Ass’y tightened with the Main Base Press !, and disassemble the Drum Price Ass’y #. c.

  • Page 57: Replacement Of The Capstan Motor

    7). REPLACEMENT OF THE CAPSTAN MOTOR (PICTURE 3-7) a. Turn over the Deck Ass’y upside down disassemble the Reel Belt !. b. Turn over Deck Ass’y to the upper part and unscrew 3 of the fixing screws @ for the Capstan Motor. Disassemble the Capstan Motor # from the lower part of the Deck Ass’y.

  • Page 58: Replacement Of The L/C Bracket Total Assembly

    9). REPLACEMENT OF THE L/C BRACKET TOTAL ASSEMBLY (PICTURE 3-8) Disassemble the Rack Spring & Pinch Lever Total Ass’y first before disassembling it. a. Turn over the Deck Ass’y upside down. b. Unscrew 2 of the fixing screws ! for the L/C Bracket Total Ass’y and disassemble the L/C Bracket Total Ass’y @. c.

  • Page 59: Mechanical Adjustment

    4-4. MECHANICAL ADJUSTMENT 1). CHECKING OF THE LOCATION FOR EACH ASSEMBLING PART Check the following before the disassembly, replacement and assembly of the Deck. a. Check the assembling standard of the Deck Mechanism at the EJECT Mode. b. Before and after assembling the L/C Bracket Total Ass’y, check the assembling location for the Cam Switch, the F/L Sub Rack and the Cam Gear.

  • Page 60: Mode Setting Method

    2). MODE SETTING METHOD a. Turn the power switch on while the F/Loading Ass’y is assembled. b. When you turn the Worm Gear 2 or 3 times by manual, it starts loading and moves to the PLAY/STOP BY Mode. c. Push any button of the mode you want to set. d.

  • Page 61: Measurement And Adjustment Of The Back Tension

    4). MEASUREMENT AND ADJUSTMENT OF THE BACK TENSION a. Insert a T-120 cassette tape that winds tape equally on the supply side and T/Up side. And push the PLAY button and wait until the operation becomes stable. (About 10 to 20 seconds) b.

  • Page 62: Adjustment Of Tape Transporting System

    4-5. ADJUSTMENT OF TAPE TRANSPORTING SYSTEM Since the Tape Transporting System is usually set at the factory before the shipment, it is not necessary to djust or check always. However you should check and adjust the Tape Transporting System in these following cases. •...

  • Page 63: Adjustment Flow For The Tape Transporting System

    2). ADJUSTMENT FLOW FOR THE TAPE TRANSPORTING SYSTEM Cleaning Replacement • Drum total ass'y Rough Adjustment of the path Height Adjustment for S-Guide Roller • ACE head ass'y • pinch lever total ass'y Confirm the lower flange folds for the S-Guide Post Height Adjustment for T-Guide Roller Tilt Adjustment for the ACE head Height Adjustment for the ACE head...

  • Page 64: The Adjusting Procedure

    3). THE ADJUSTING PROCEDURE ROUGH ADJUSTMENT OF THE PATH Insert E-160 cassette tape into the Deck and push the PLAY button. 1-1) Height Adjustment for the S/T-Guide Roller a. Make sure if the tape is folded or cracked between the tape and the upper Flange of S/T-Guide Roller and the entrance/exit side Lead Line of Drum while the tape is running.
  • Page 65 TAPE GUIDE POST Adjust the TILT Adjustment Screw @ by turning to the clockwise direction TAPE Adjust the TILT Adjustment Screw @ by turning to the counter-clockwise direction PICTURE 5-3 1-3) Height Adjustment for the Ace Head TAPE GAP = 0.25mm PICTURE 5-4 a.
  • Page 66 PRIOR ADJUSTMENT OF THE PATH (ADJUSTMENT OF PG) a. Connect the Channel 1(CH1) of the Oscilloscope to TP01-3(Head Switching Pulse) and CH2 to the VIDEO OUT. And align the Tracking VR on the center. b. Playback the Stairstep Signal Tape (DN 2). c.
  • Page 67 3-2) Rough Adjustment of the X-Position a. Turn the Tracking VR to align it on the center. b. Loosen the A/C Head Screws ($ & %) of Picture 5-2 by turning about 90°~120°. c. Maximize the Envelope Wave of the Oscilloscope by turning the A/C Head Total Ass’y with a (+) driver as shown in the picture 5-7.
  • Page 68 ADJUSTMENT OF THE AUDIO Before adjusting the Audio, play the tape and check if there is any fold on the tape at the lower part of the Tape Guide Post (T-side). 4-1) Tilt and Height Adjustment of the Audio a. Connect the AUDIO OUTPUT to an Audio Level Meter. b.
  • Page 69 d. Playback the test tape DN-2E(EP Mode)/DP-2 to check if the its directional feature is same as the picture 5-13. (There should be no major change of wave or screen noise from the CCW 4ms to the CW 6ms range of the Tracking Volume.) TRACKING CCW 4ms TRACKING CENTER...

  • Page 70: Exploded View Of Deck Area And Parts List

    4-6. EXPLODED VIEW OF DECK AREA AND PARTS LIST 1). EXPLODING VIEW OF THE DECK...

  • Page 72: Parts List Of The Deck

    2). PARTS LIST OF DECK STOCK NO PART NAME Q’TY REMARK 97SA255600 S-SLANT POLE AS 97SA254830 DRUM PRICE AS NTSC VCP 97SA254630 DRUM PRICE AS NTSC VCP 97PA265131 DRUM PRICE AS NTSC 2•HD Hi-Fi VCP 97SA255700 T-SLANT POLE AS PAL VCR 97SA257500 A/C HEAD TOTAL AS NTSC VCP...
  • Page 73 3). THE MAJOR MAIN SPARE PARTS LIST OF THE DECK STOCK NO PART NAME Q’TY REMARK 97SA254830 S1-MECHA 97SA254630 S1-MECHA NTSC VCP 97PA265131 S1-MECHA NTSC 2•HD Hi-Fi VCP 97S8101000 F0QTB12 PAL VCR 97SA256200 S1-MECHA NTSC VCP 97S5500500 PAL VCR 97SA256900 S1-MECHA 97SA256700 S1-MECHA...
  • Page 74 AUDIOVOX SPECIALTY MARKETS CO., LP 23319 COOPER DR. ELKHART, IN 46514 (219)266-1886...

Table of Contents