Download
Share
Print this page
Daewoo K-MECHA DECK Technical & Service Manual
  1. Manuals
  2. Brands
  3. Daewoo Manuals
  4. VCR
  5. K-MECHA DECK
  6. Technical & service manual
Daewoo K-MECHA DECK Technical & Service Manual

Daewoo K-MECHA DECK Technical & Service Manual

Vcr mechanism unit
Hide thumbs

Advertisement

Quick Links

Download this manual

Advertisement

loading
Need help?

Need help?

Do you have a question about the K-MECHA DECK and is the answer not in the manual?

Questions and answers

Related Manuals for Daewoo K-MECHA DECK

Summary of Contents for Daewoo K-MECHA DECK

  • Page 2: Table Of Contents

    CONTENTS 1. MECHANISM DESCRIPTION ....................2 2. ASSEMBLY DIAGRAM & MAJOR PARTS CHECK ..............5 3. DISASSEMBLY AND REPLACEMENT ................12 4. MECHANICAL ADJUSTMENT....................22 5. ADJUSTMENT OF TAPE TRANSPORTING SYSTEM............27 6. EXPLODED VIEW AND PARTS LIST..................37...

  • Page 3: Mechanism Description

    2) K-MECHA DECK uses three motors (DRUM MOTOR, CAPSTAN MOTOR and L/C MOTOR) 3) K-MECHA DECK uses L/C MOTOR to drive FRONT LOADING. 4) K-MECHA DECK recognizes each mode by using a 4-BIT MODE signal. This 4-BIT MODE signal is generated by the CAM SWITCH which is driven by the L/C MOTOR.
  • Page 4 1-2 WIRE DIAGRAM 1-2-1) WIRE DIAGRAM...
  • Page 5 1-2-2) CONNECTOR PIN ARRANGEMENT CN-A (2 HEAD MONO) CN-A (2 HEAD Hi-Fi) CN-1 DRUM M/T 12V COMMON COMMON DRUM SPP CTL DRUM PG NON CONTACT COMMON DRUM FG CN-B FE HEAD CN-A (4 HEAD MONO) CN-C CN-2 SP-L L/C MT (+) EVER 5V COMMON CAPSTAN F/R...

  • Page 6: Assembly Diagram & Major Parts Check

    2. ASSEMBLY DIAGRAM & MAJOR PA RTS CHECK 2-1. ASSEMBLING DIAGRAM 2-1-1) ASSEMBLING DIAGRAM OF DECK ASS'Y A. TOP VIEW & 1. EARTH BRKT ASS'Y 11. T-SUB BRAKE ASS'Y 2. FE HEAD 12. RELAY LEVER 3. S SLANT POLE ASS'Y 13.
  • Page 7 B. BOTTOM VIEW & 1. CAPSTAN MOTOR 6. RECORD SAFETY LEVER 2. F/L RACK 7. L LOADING ASS'Y 3. CONNECT PLATE 8. R LOADING ASS'Y 4. REEL BELT 9. DRUM TOTAL ASS'Y 5. REEL GEAR TOTAL ASS'Y 10. LOADING RACK ASS'Y...
  • Page 8 2-1-2) PARTS LOCATION OF FRONT LOADING ASS'Y A. TOP VIEW B. FRONT VIEW...
  • Page 9 2-2. PERIODIC MAINTENANCE AND SERVICE SCHEDULE 2-2-1) PERIODIC MAINTENANCE AND SERVICE SCHEDULE A. In order to effectively maintain the excellent performance and fully utilize the features of this apparatus, and to lengthen the life of the mechanism and tapes, we strongly urge you to perform periodic maintenance and inspection, as described below.
  • Page 10 2-2-3) SERVICE SCHEDULE FOR THE MAJOR PARTS The following parts should receive periodic service, according to the recommended intervals. PERIODIC SERVICE (TIME) NAME 1000 2000 3000 4000 5000 DRUM TOTAL ASS'Y ¡ ¡ ¡ ¡ ¡ CAPSTAN MOTOR ¡ ¡ L/C BRKT TOTAL ASS'Y ¡...
  • Page 11 TAPE TRANSPORTING ¤ (EP MONOSCOPE) SYSTEM PAL: SP MONOSCOPE 6KHz SP COLORBAR 1KHz (LP MONOSCOPE) CLEANING TAPE CHECKING OF THE TAPE DHC-602V ¤Ł (DAEWOO) TRANSPORTING SYSTEM CASSETTE TAPE KT-300NV MEASUREMENT OF ¤Ø (KOKUSAI) KT-300RV REEL TORQUE VHS SPINDLE MEASUREMENT OF TSH-V4 ¤Œ...
  • Page 12 2-3-2) SKETCH OF JIGS AND TOOLS ¤ ¤Ł ¤Ø ¤Œ VHS SPINDLE HEIGHT GAUGE ¤º ¤ ¤ ¤...

  • Page 13: Disassembly And Replacement

    3. DISASSEMBL Y AND REPLACEMENT 3-1. FRONT LOADING ASS’Y REMOVAL (See Fig. 3-1) NOTE: The FRONT LOADING ASSEMBLY can be removed only in the eject position. a. Remove 2 screws ¤ fixing THE FRONT LOADING ASS'Y. A0400 Fig.3-1 FRONT LOADING ASS’Y SEPARATION...
  • Page 14 3-2. DISASSEMBL Y OF THE FRONT LOADING ASS’Y (See Fig. 3-2~3-6) a. Remove one screw holding the F/L BRACKET R and move the F/L BRACKET R in the direction of arrow to separate it from the TOP PLATE and CASSETTE HOLDER ASSEMBLY. b.
  • Page 15 d. Remove one screw holding the PRISM LINK L. (Fig. 3-4) e. Release the hook B by pushing it in the direction of the arrow and remove the DOOR OPENER. (Fig. 3-4) Fig. 3-4 DISASSEMBLY OF THE TOP PLATE f. Remove the LOADING LEVER ASSEMBLY by pressing the connected section of the loading lever assembly in the directions of the arrows.
  • Page 16 NOTE: Reassemble the FRONT LOADING MECHANISM in the reverse order. Confirm that the two bosses on the left side of the CASSETTE HOLDER AS are inserted into the groove on the left side of the top plate. Insert the two bosses on the right side of the cassette holder into the groove of the F/L BRAKCET R (Fig.
  • Page 17 3-4. REEL BEL T, LOADING RACK ASS’Y , LOADING ASS’Y , S/T SLANT POLE ASS’Y REMOVAL (See Fig.3-8) a. Turn over the DECK MECHANISM and remove the REEL BELT ¤ . b. Remove one POLY WASHER ¤Ł . c. Remove the LOADING RACK ASS'Y ¤Ø . d.
  • Page 18 3-5. A/C HEAD ASS’Y REMOVAL (See Fig.3-10) a. Remove one nut hex ¤ from the A/C HEAD POST ¤Œof the MAINBASE. b. Remove the A/C HEAD ASSEMBLY ¤Łfrom the MAINBASE. c. Remove the A/C HEAD SPRING ¤Øfrom the A/C HEAD ASSEMBLY ¤Ł . NOTE: ƒUAfter reassembling, adjust the TAPE TRANSPORTING SYSTEM refering to...
  • Page 19 3-8. CAM GEAR, RELAY LEVER AND F/L RACK REMOVAL (See Fig.3-11) a. Remove the CAM GEAR ¤ from the MAINBASE. (Fig.3-11) b. Remove the RELAY LEVER ¤ from the MAINBASE. (Fig. 3-11) c. Remove the F/L RACK ¤ from the MAINBASE by pulling it in the direction of the arrow. NOTE: When reassembling, refer to Fig.
  • Page 20 3-10. TENSION BAND ASS’Y REMOVAL (See Fig.3-15, 3-16) a. Remove the TENSION SPRING ¤Łfrom the MAINBASE ¤ . (Fig.3-15) b. Turn the DECK MECHANISM over. (Fig.3-16) c. After separating the tab of hook 'A', remove the TENSION BAND ASSEMBLY ¤Ø . (Fig.3-16) NOTE: ƒUAfter assembling the TENSION BAND ASSEMBLY on the MAINBASE, adjust the position of TENSION POLE as shown Fig.
  • Page 21 3-11. CAPSTAN MOTOR REMOVAL (See Fig.3-18) Remove 3 screws fixing the CAPSTAN MOTOR and separate the CAPSTAN MOTOR. Fig.3-18 CAPSTAN MOTOR REMOVAL 3-12. IDLER PLATE TOTAL ASS’Y & S/T REEL T ABLE REMOVAL (See Fig.3-19) a. Remove one POLY WASHER ¤ from the REEL GEAR POST ¤Łand remove the IDLER PLATE TOTAL ASSEMBLY ¤Øfrom the MAIN BASE.
  • Page 22 3-13. FE HEAD REMOVAL (See Fig.3-20) Remove one screw ¤ fixing the FE HEAD and remove the FE HEAD ¤Łfrom the MAINBASE. Fig.3-20 FE HEAD REMOVAL 3-14. REEL GEAR TOTAL ASS’Y & CONNECT PLATE REMOVAL (Fig.3-21) a. Turn over the DECK MECHANISM and remove one POLY WASHER ¤...

  • Page 23: Mechanical Adjustment

    4. MECHANICAL ADJUSTMENT 4-1. MECHANICAL ADJUSTMENT (See Fig.4-1~4-5) When operational problems occur or the mechanism is reassembled, be sure to confirm the following INSTRUCTIONS. a. Make sure that the DATUM HOLE of the CAM GEAR is aligned with the DATUM HOLE in the MAINBASE in the EJECT mode, as shown in Fig.4-1.
  • Page 24 c. When reassembling the L/C BRACKET TOTAL ASSEMBLY on the MAINBASE, make sure that the two triangular marks of CAM SWITCH are aligned with each other as shown in Fig.4-3. TRIANGLE MARKS MUST MEET EACH OTHER Fig.4-3 DATUM POSITION OF CAM SWITCH TRIANGULAR MARKS d.
  • Page 25 e. Make sure that the triangular mark "A" on the L LOADING ASSEMBLY is aligned with the notch "B" on the R LOADING ASSEMBLY as shown in Fig. 4-5. f. Make sure that the teeth of the LOADING RACK ASSEMBLY are aligned with those of the R LOADING ASSEMBLY so that the hole of the LOADING RACK ASSEMBLY aligns with the circular mark on the R LOADING ASSEMBLY, as shown in Fig.4-5.
  • Page 26 4-2. BACK TENSION MEASUREMENT (See Fig.4-6~4-7) a. Confirm that the position of the TENSION POLE is correctly POSITIONED. Refer to the "4-4 TENSION POLE POSITION ADJUSTMENT ". b. Play back a T-120 TAPE at its center position without assemblying F/L ASSEMBLY and wait until the TAPE running is stabilized (about 5~10 seconds).
  • Page 27 4-3. MECHANICAL MODE (OPERATING THE VCR WITHOUT A CASSETTE TAPE) a. Remove the FRONT LOADING MECHANISM from the DECK MECHANISM. b. Pull the F/L RACK. c. The S/T POLE BASES are loaded and PLAY BACK MODE starts. d. Turn off the power when the MECHANISM is in the desired position. 4-4.

  • Page 28: Adjustment Of Tape Transporting System

    5. ADJUSTMENT OF TAPE TRANSPORTING SYSTEM Generally the TAPE TRANSPORTING SYSTEM has been precisely adjusted in the factory and does not ordinarily require readjustment. But when noise and tape damage take place and part assemblies that compose the TAPE TRANSPORTING SYSTEM are replaced, check and readjust the TAPE TRANSPORTING SYSTEM.
  • Page 29 Fig. 5-1 THE SCHEMATIC DIAGRAM OF TAPE TRANSPORTING SYSTEM When the parts as shown in Fig. 5-1 are replaced, the TAPE TRANSPORTING SYSTEM has changed. To prevent this, it is essential to know thoroughly and observe the following INSTRUCTIONS. A. ADJUSTMENT OF THE S/T GUIDE ROLLER a.
  • Page 30 B. ADJUSTMENT OF THE A/C HEAD ASS'Y (TILT ADJUSTMENT) TURN THE A/C HEAD TILT SCREW TO THE a. Play back a T-120 Tape and check the running condition of DIRECTION OF CW the TAPE at the lower flanges of the T GUIDE POST ASS'Y ¤æin Fig.
  • Page 31 E. X-POSITION ADJUSTMENT S/W PULSE TEST PIN PATH ADJ. FIXTURE TEST POINTS ENVELOPE TEST PIN PATH ADJ. FIXTURE MEASURING EQUIPMENT OSCILLOSCOPE VR CONTROL PATH ADJ. FIXTURE A D J U S T M E N T ADJUST BOSS MAIN BASE. a.
  • Page 32 F. PLAYBACK PHASE ADJUSTMENT (See Fig. 5-6) S/W PULSE TEST PIN PATH ADJ. FIXTURE TEST POINTS VIDEO OUT MAIN CIRCUIT BOARD MEASURING EQUIPMENT OSCILLOSCOPE A D J U S T M E N T VR595 (PG SHIFTER) MAIN CIRCUIT BOARD Phase generator (PG) shifter decides the VIDEO HEAD switching point when a TAPE is played back.
  • Page 33 G. LINEARITY ADJUSTMENT S/W PULSE TEST PIN PATH ADJ. FIXTURE TEST POINTS ENVELOPE TEST PIN PATH ADJ. FIXTURE MEASURING EQUIPMENT OSCILLOSCOPE VR CONTROL PATH ADJ. FIXTURE A D J U S T M E N T S/T GUIDE ROLLER TAPE TRANSPORTING SYSTEM a.
  • Page 34 H. DRUM ENTRANCE /EXIT (See Fig. 5-8, 5-9) S/W PULSE TEST PIN PATH ADJ. FIXTURE TEST POINTS ENVELOPE TEST PIN PATH ADJ. FIXTURE MEASURING EQUIPMENT OSCILLOSCOPE VR CONTROL PATH ADJ. FIXTURE A D J U S T M E N T S/T GUIDE ROLLER TAPE TRANSPORTING SYSTEM a.
  • Page 35 I. REVIEW ¤ ¤ A A PLAY (See Fig. 5-10) S/W PULSE TEST PIN PATH ADJ. FIXTURE TEST POINTS ENVELOPE TEST PIN PATH ADJ. FIXTURE MEASURING EQUIPMENT OSCILLOSCOPE VR CONTROL PATH ADJ. FIXTURE A D J U S T M E N T S/T GUIDE ROLLER TAPE TRANSPORTIN SYSTEM a.
  • Page 36 J. AUDIO OUTPUT (A/C HEAD TILT & HEIGHT ADJUSTMENT) TEST POINTS AUDIO OUTPUT AUDIO OUTPUT JACK MEASURING EQUIPMENT OSCILLOSCOPE a. Connect the OSCILLOSCOPE to the AUDIO OUTPUT JACK. b. Play back the ALIGNMENT TAPE (NTSC: DN1 (SP , 1KHz), PAL: DP1 (SP , 1KHz)). c.
  • Page 37 L. X-POSITION (See Fig. 5-11) S/W PULSE TEST PIN PATH ADJ. FIXTURE TEST POINTS ENVELOPE TEST PIN PATH ADJ. FIXTURE MEASURING EQUIPMENT OSCILLOSCOPE VR CONTROL PATH ADJ. FIXTURE A D J U S T M E N T ADJUST BOSS MAIN BASE.

  • Page 38: Exploded View And Parts List

    6. EXPLODED VIEW AND PA RTS LIST 6-1. EXPLODED VIEW OF DECK ASS’Y (TOP VIEW) AC001...
  • Page 39 6-2. EXPLODED VIEW OF DECK ASS’Y (BOTTOM VIEW)
  • Page 40 6-3. EXPLODED VIEW OF F/L ASS’Y...
  • Page 42 6-4-1. PA RTS LIST OF DECK TOTAL ASS’Y LOC. STOCK NO. PART NAME DESCRIPTION NTSC M1000 97PC0048D- DECK TOTAL AS DRN-7203 (HT 2 HD EP NON-DLC) M1000 97PC0186D- DECK TOTAL AS DPN-7204 “(HT 2 HD EP NON-DLC, HEAD CLNR, VCP)” M1000 97PC0187D- DECK TOTAL AS...
  • Page 43 LOC. STOCK NO. PART NAME DESCRIPTION M1000 97PC0069D- DECK TOTAL AS DRP-7103 (HT 2 HD SP MONO NON-DLC) M1000 97PC0184D- DECK TOTAL AS DPP-7104 “(HT 2 HD SP MONO NON-DLC, HEAD CLNR, VCP)” M1000 97PC0182D- DECK TOTAL AS DRP-7104 “(HT 2 HD SP MONO NON-DLC, HEAD CLNR)” M1000 97PC0059D- DECK TOTAL AS...
  • Page 44 LOC. STOCK NO. PART NAME DESCRIPTION SECAM M1000 97PC0074D- DECK TOTAL AS DRS-7400 (4 HD MONO NON-DLC) M1000 97PC0075D- DECK TOTAL AS DRS-7420 (4 HD MONO DLC) M1000 97PC0189D- DECK TOTAL AS DRS-7603 (HT 4 HD HI-FI NON-DLC) M1000 97PC0054D- DECK TOTAL AS DRS-7623 (HT 4 HD HI-FI DLC)
  • Page 45 LOC. STOCK NO. PART NAME DESCRIPTION AD001 97PA258701 DRUM PRICE AS CYP-K110H (HT 2 HD SP MONO NON-DLC) AD001 97PA255271 DRUM PRICE AS CYP-K112H (HT 2 HD SP MONO DLC) AD001 97PA258801 DRUM PRICE AS CYP-K210H (HT 2 HD SP/LP MONO NON-DLC) AD001 97PA255371 DRUM PRICE AS...
  • Page 46 6-4-3. PA RTS LIST OF DECK TOTAL ASS¡fl Y LOC. STOCK NO. PART NAME DESCRIPTION DRUM PRICE AS B0020 97S1401700 DRUM BASE “K, FM-M(NON-MACHINING,ADC)” B0030 7001300811 MACHINE SCREW PAN 3X8 MFZN B0050 97SA310600 DRUM MOTOR AS SDV-0306A 97SA312000 DRUM MOTOR AS E20XL18 97SA319100 DRUM MOTOR AS...
  • Page 47 LOC. STOCK NO. PART NAME DESCRIPTION A1800 97S3117300 WASHER POLY D3.6XD8XT0.5 A1900 97SA310400 L/C BRKT TOT AS K-MECHA B1905 97SA414100 L/C BRKT AS K-MECHA B1910 97PA409200 L/C MOTOR AS K-MECHA B1920 97P6538222 L/C MOTOR PCB PHENOL T1.6 B1930 97P6271500 CONN WAFER(ANGLE) 00-8283-0711-0000 B1940 5SSFF1DKM10...
  • Page 48 S022GBB...