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Sony VX-14MW1U Service Manual

Tv / vcr combination
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Service Manual

TV / VCR Combination
CHASSIS : CP-082S
Model : VX-14MW1U/14MW1E
VX-21MW1U/21MW1E
SPECIFICATIONS
ITEMS
MODEL
VX-14MW1U/14MW1E
VX-21MW1U/21MW1E
TV SECTION
STANDARD
PAL-I/II(UK MODEL),PAL-B/G(CONTINENTAL MODEL)
SCREEN SIZE
14" : A34EAC01X..
21" : A51EAL...X..
MAIN VOLTAGE
220~240V AC,50Hz
POWER
STAND BY MODE : BELOW 5 Watts
CONSUMPTION
OPERATION MODE : 14"=50Watts, 21"=63Watts
SOUND OUTPUT
1Wmin
SPEAKER
3Watts 8 Ohm
ANTENNA IMPEDANCE
75 Ohm unbalanced input
TUNING SYSTEM
FVS(FREQUENCY SYNTHESIS) TUNING
TUNER
VHF-L : E2-S10, VHF-H : E5-S39, UHF : S40-E69 (PAL-I=UHF ONLY)
NUMBER OF PROGRAM
100 PROGRAM
AUX. TERMINAL
SCART JACK(REAR) , RCA JACK(AV2 FRONT), HEADPHONE JACK
REMOTE CONTROLLER
RM-Z5403/04 with 2 "AAA" type batteries
OTHER FEATURE
ON SCREEN DISPLAY, SLEEP TIMER, WAKE UP TIMER, FULL AUTO SEARCH,
MANUAL/FINE TUNING,CHILD LOCK, PANEL LOCK, AUTO REPEAT,
PICTURE TYPE SELECTION (LIVE, NORMAL, FAVOURITE), INDEX SEARCH, TV/AV
VIDEO
SINGLE SYSTEM
PAL colour and CCIR mono chrome signals, 625lines/50fields.
SECTION
RECORDING SYSTEM
2HEAD
INPUT
OUTPUT
1Vp-p, 75 ohm, unbalanced
SIGNAL TO NOISE RATIO
HORIZONTAL RESOLUTION
230lines with NETTETE IMAGE control at center position
AUDIO
RECORDING SYSTEM
LONGITUDINAL TRACK
INPUT
OUTPUT
FREQUENCY RANGE
100Hz to 6KHz
SIGNAL TO NOISE RATIO
30dB(more than)
GENERA
TEMPERATRE
5 o C to 35 o C(operating), -20 o C to 60 o C (storage temperature)
FORMAT
standard
TAPE WIDTH
12.65mm
TAPE SPEED
SP : 23.39mm/sec, LP : 11.70mm/sec
WITH FULLSIZE
SP : 240 min, win E-240 video cassette
CASSETTE
LP : 480min, win E-240 video cassette
SONY Corporation.
S/M No. : 9-927-470-01
1Vp-p, 75 ohm, unbalanced
43dB with NETTETE IMAGE control at center position
-3.8dBm(500m Vrms), more than 47 Kohms, unbalanced
-3.8dBm(500m Vrms), less than 1 Kohms, unbalanced
REMARK
Nov. 2003

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  • Page 1: Service Manual

    S/M No. : 9-927-470-01 Service Manual TV / VCR Combination CHASSIS : CP-082S Model : VX-14MW1U/14MW1E VX-21MW1U/21MW1E SPECIFICATIONS ITEMS MODEL VX-14MW1U/14MW1E REMARK VX-21MW1U/21MW1E TV SECTION STANDARD PAL-I/II(UK MODEL),PAL-B/G(CONTINENTAL MODEL) SCREEN SIZE 14” : A34EAC01X.. 21” : A51EAL...X.. MAIN VOLTAGE 220~240V AC,50Hz...

  • Page 2: Table Of Contents

    PART I SAFETY INSTRUCTION SPECIFICATION CIRCUIT BLOCK DIAGRAM ALIGNMENT INSTRUCTIONS SERVICE REMOCON DIAGRAM SCHEMATIC DIAGRAM EXPLODED VIEW PRINTED CIRCUIT BOARD COORDINATES OF MAIN PCB SERVICE PARTS LIST PART II TECHNICAL SERVICE GUIDE...

  • Page 3: Safety Instruction

    SAFETY INSTRUCTION WARNING:BEFORE SERVICING THIS CHASSIS, 3. When replacing a high wattage resistor (metal READ THE X-RAY RADIATION oxide film resistor) in circuit board, keep the PRECAUTION , SAFETY resistor 10mm away from circuit board. PRECAUTION AND PRODUCTION 4. Keep wires away from high voltage or high SAFETY NOTICE BELOW.

  • Page 4: Specification

    SPECIFICATION ITEMS MODEL VX-14MW1U/14MW1E REMARK VX-21MW1U/21MW1E STANDARD PAL-I/II(UK MODEL),PAL-B/G(CONTINENTAL MODEL) SECTION SCREEN SIZE 14”:A34EAC01X.. 21”:A51EAL...X.. MAIN VOLTAGE 220~240V AC,50Hz POWER STAND BY MODE : BELOW 5 Watts CONSUMPTION OPERATION MODE : 14”=50Watts, 21”=63Watts SOUND OUTPUT 1Wmin SPEAKER 3Watts 8 Ohm...

  • Page 5: Circuit Block Diagram

    CIRCUIT BLOCK DIAGRAM...

  • Page 6: Alignment Instructions

    ALIGNMENT INSTRUCTIONS 1. MAIN TUNER AGC 1) Set a Pattern Generator with RF level 65 2 dBuV, 210.25 MHz. 2) Connect a OSCILLOSCOPE PROBE to P101 (pin #1) ,(TUNER AGC INPUT). 3) Adjust AGC UP/DOWN KEY the voltage drop about 1V DC over below it s maximum voltage. 2.
  • Page 7 ALIGNMENT INSTRUCTIONS 6-5. HORIZONTAL CENTER 1) Apply a RETMA PATTERN SINGNAL. 2) Adjust picture centering with H-CENTER +/- KEY. 7. DECK ADJUSTMENT 7-1. X-POSITION AND P2,P3 ADJUSTMENT 1) Adjust point : X-POSITION Checking point : oscilloscope ch1 = H/SW (PY03 #6) oscilloscope ch2 = PB ENVE (PY03 #4) Triggering : CH1 Measuring Equipment : oscilloscope, path jig...
  • Page 8 ALIGNMENT INSTRUCTIONS 7-2. AUTO PG ADJUSTMENT 1) After adjustment of 7-1. Press the REC. button. 2) Eject the Test tape. 7-3. AZIMUTH ADJUSTMENT 1) Adjust point : AZIMUTH SCREW Checking point : SOUND OUTPUT (PY03) Measuring Equipment : oscilloscope or audio level meter. Mode : PLAYBACK Test tape : DP-2 (6KHz) * Adjustment Procedure...

  • Page 9: Service Remocon Diagram

    SERVICE REMOCON DIAGRAM 1. DIAGRAM 1. DIAGRAM * To enter the SERVICE MODE Press NORMAL => AV => SLEEP => CLEAR => POWER buttons in regular sequency within 10seconds using USER REMOCON after setting ST-BY.
  • Page 10 SERVICE REMOCON 2. HOW TO CHECK TV SECTION WITHOUT VCR DECK If you want to check TV section without DECK mechanism, then please perform in this order. 1) Pull out the power cord. 2) Remove the VCR DECK mechanism. 3) Supply the main power. ( Main sw on ) 4) Wait for about 10 seconds.
  • Page 11 SERVICE REMOCON 13) STILL Press this button to enter the PAUSE/STILL mode. 14) STOP Press this button to enter the STOP mode. 15) REW/REV Press this button to enter the REW/REV mode. 16) PLAYBACK Press this button to enter the PLAYBACK mode. 17) FF/CUE Press this button to enter the FF/CUE mode.

  • Page 12: Schematic Diagram

    SCHEMATIC DIAGRAM...
  • Page 13 SCHEMATIC DIAGRAM...

  • Page 14: Exploded View

    EXPLODED VIEW 1. VX-14R7...
  • Page 15 EXPLODED VIEW 2. VX-21R7...

  • Page 16: Printed Circuit Board

    PRINTED CIRCUIT BOARD 1. MAIN PCB...

  • Page 17: Coordinates Of Main Pcb

    COORDINATES OF MAIN PCB C101 C709 CC163 J CC735 A CCP03 E C102 C718 CC165 I CC736 B CCP05 E C105 C723 CC167 I CCA01 A CCP08 E C107 C729 CC169 I CCA02 A CCQ01 A C151 C731 CC170 I CCA03 K CCU06 G C156...
  • Page 18 COORDINATES OF MAIN PCB CL57 CU12 G CY53 DL01 L603 CN01 E CU13 G CY54 DL50 L605 CN02 D CU14 G CY58 DN01 B L701 CN03 E CU15 G CY59 DN02 B L703 CN04 E CU16 G CY65 DN03 D L704 CN08 C CU17 G...
  • Page 19 COORDINATES OF MAIN PCB PN03 QCL52 J R556 RA49 RC704 C PNA01 G QCN01 C R560 RA51 RC705 C PY02 QCP01 E R561 RC105 K RC706 C PY03 QCY01 G R570 RC150 J RC707 C Q570 QCY02 F R601 RC151 K RC708 C Q705 QCY03 F...
  • Page 20 COORDINATES OF MAIN PCB RCA50 F RCN26 D RCU34 F RN38 B RY25 RCA52 J RCN34 C RCU37 E RN39 B RY28 RCA53 D RCN35 C RCY06 G RN40 B RY29 RCA54 D RCN36 C RCY08 G RN42 B RY30 RCA55 G RCN37 C RCY09 G...
  • Page 21 PRINTED CIRCUIT BOARD 2. POWER PCB...
  • Page 22 PRINTED CIRCUIT BOARD 3. IF PCB...

  • Page 23: Service Parts List

    SERVICE PART LIST is a safety component, so the same component must be used. Caution is a recommended part for stock. PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK ZZ110 PTACPWA884 ACCESSORY AS DVT-14R7UBF-S M721 4857248900 SHIELD TOP SECC T0.8 00010...

  • Page 24: Service Part List

    SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK CC712 HCBK103KCA C CHIP CERA 50V X7R 0.01MF K 2012 QC704 T2SC2412KB TR CHIP 2SC2412KB CC713 HCQK221JCA C CHIP CERA 50V CH 220PF J 2012 QC707 T2SC2412KB TR CHIP...
  • Page 25 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RC719 HRFT102JCA R CHIP 1/10 1K OHM J 2012 RCQ03 HRFT561JCA R CHIP 1/10 560 OHM J 2012 RC721 HRFT473JCA R CHIP 1/10 47K OHM J 2012 RCQ05 HRFT102JCA R CHIP...
  • Page 26 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C613 CMXL1J224J C MYLAR 63V MEU 0.22MF J TP CY02 CMXM2A473J C MYLAR 100V 0.047MF J TP C614 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP CY03 CEXF1H109A C ELECTRO...
  • Page 27 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK C522 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING DA02 D1N4148 - DIODE 1N4148 (TAPPING) C543 CBZF1H104Z C CERA SEMI 50V F 0.1MF Z (AXIAL) DA03 DTZX6V2 - DIODE ZENER TZX6V2B (TAPPING)
  • Page 28 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK J055 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J132 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J056 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING J133 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING...
  • Page 29 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK J208 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING LA01 5CPZ100K04 COIL PEAKING 10UH 10.5MM K (LAL04TB) J211 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING LA02 5CPZ100K04 COIL PEAKING 10UH 10.5MM K (LAL04TB)
  • Page 30 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK RA14 RD-AZ223J- R CARBON FILM 1/6 22K OHM J RY20 RD-AZ750J- R CARBON FILM 1/6 75 OHM J RA16 RD-AZ821J- R CARBON FILM 1/6 820 OHM J RY21 RD-AZ820J- R CARBON FILM...
  • Page 31 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK P802 4859235220 CONN WAFER YW025-09 C312 CBXF1H104Z C CERA SEMI 50V F 0.1MF Z (TAPPING) P802A 4859242220 CONN WAFER YFW800-02 C313 CMXM2A104J C MYLAR 100V 0.1MF J TP P803 4859232020 CONN WAFER...
  • Page 32 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK D802 DLT2A05G DIODE LT2A05G R405 RD-AZ152J- R CARBON FILM 1/6 1.5K OHM J D803 DLT2A05G DIODE LT2A05G R412 RD-4Z272J- R CARBON FILM 1/4 2.7K OHM J D804 DLT2A05G DIODE...
  • Page 33 SERVICE PART LIST PART CODE PART NAME DESCRIPTION REMARK PART CODE PART NAME DESCRIPTION REMARK CC540 HCBK102KCA C CHIP CERA 50V X7R 1000PF K 2012 J009 85801065GY WIRE COPPER AWG22 1/0.65 TIN COATING CC546 HCFK104ZCA C CHIP CERA 50V Y5V 0.1MF Z 2012 J010 85801065GY WIRE COPPER...
  • Page 34 REF.NO. PART.NO DESCRIPTION REMARK TOP REQUESTED PARTS LIST FOR SERVICE ACCESSORIES AND PACKAGING MATERIALS D809 £ 9-948-018-53 DIODE HER308G (VX14MW1) 9-948-018-93 INDIVIDUAL CARTON (VX-14MW1U) D821 £ 9-948-018-54 DIODE BYW76 (VX14MW1) 9-948-018-95 INDIVIDUAL CARTON (VX-14MW1E) DN03 9-948-018-55 LED IR SI5312-H (VX14MW1)
  • Page 35 Technical Service Guide VCR MECHANISM UNIT (K30-MECHA DECK) SONY Corporation.
  • Page 36 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 37: Mechanism Description

    1.DESCRIPTION OF THE MECHANISM 1-1 CHARACTERISTIC OF THE K30-DECK MECHANISM 1) K30-MECHA DECK follows the VHS standard. 2) K30-MECHA DECK uses three motors (DRUM MOTOR, CAPSTAN MOTOR and L/C MOTOR) 3) K30-MECHA DECK uses L/C MOTOR to drive FRONT LOADING. 4) K30-MECHA DECK recognizes each mode by using a 4-BIT MODE signal.
  • Page 38 1-2 WIRE DIAGRAM 1-2-1) WIRE DIAGRAM...
  • Page 39 1-2-2) CONNECTOR PIN ARRANGEMENT CN-1 (2 HEAD MONO) CN-A SP-L DRUM SPD CTL COMMON SP-R DRUM FG DRUM PG NON CONNECT NON CONNECT CN-B FE HEAD CN-1 (4 HEAD MONO) CN-C CN-2 L/C MT (+) SP-L EVER 5V L/C MT (–) COMMON CAPSTAN F/R SP-R...

  • Page 40: Assembly Diagram & Major Parts Check

    2.ASSEMBLY DI A GRAM & MAJOR PARTS CHECK 2-1. ASSEMBLING DIAGRAM 2-1-1) ASSEMBLING DIAGRAM OF DECK ASS'Y A. TOP VIEW & 1. FE HEAD 11. T-SUB BRAKE ASS'Y 2. S SLANT POLE ASS'Y 12. RELAY LEVER 3. TENSION BAND ASS'Y 13.
  • Page 41 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 42 2-1-2) PARTS LOCATION OF FRONT LOADING ASS'Y A. TOP VIEW B. FRONT VIEW...
  • Page 43 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 44 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 REEL BELT IDLER PLATE TOTAL ASS'Y REEL TABLE...
  • Page 45 2-3. JIGS AND TOOLS 2-3-1) LIST OF JIGS AND TOOLS FIG. ITEMS MODEL REMARKS NTSC: SP MONOSCOPE 7KHz CHECKING OF THE ALIGNMENT TAPE SP COLORBAR 1KHz TAPE TRANSPORTING (EP MONOSCOPE) SYSTEM PAL/SCAM: SP MONOSCOPE 6KHz SP COLORBAR 1KHz (LP MONOSCOPE) CLEANING TAPE CHECKING OF THE TAPE DHC-602V...
  • Page 46 2-3-2) SKETCH OF JIGS AND TOOLS VHS SPINDLE HEIGHT GAUGE...

  • Page 47: 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.
  • Page 48 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 49 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) f. Remove the LOADING LEVER ASSEMBLY by pressing the connected section of the loading lever assembly in the directions of the arrows.
  • Page 50 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 51 3-4. REEL BELT , 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 c. Remove the LOADING RACK ASS'Y d.
  • Page 52 3-5. A/C HEAD ASS'Y REMOVAL (See Fig.3-10) a. Remove one nut hex from the A/C HEAD POST of the MAINBASE. b. Remove the A/C HEAD ASSEMBLY from the MAINBASE. c. Remove the A/C HEAD SPRING from the A/C HEAD ASSEMBLY NOTE: After reassembling, adjust the TAPE TRANSPORTING SYSTEM refering to...
  • Page 53 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 54 3-10. TENSION BAND ASS'Y REMOVAL (See Fig.3-15, 3-16) a. Remove the TENSION SPRING from 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 . (Fig.3-16) NOTE: After assembling the TENSION BAND ASSEMBLY on the MAINBASE, adjust the position of TENSION POLE as shown Fig.
  • Page 55 3-11. CAPST AN MOTOR REMOVAL (See Fig.3-18) Remove 3 screws fixing the CAPSTAN MOTOR and separate the CAPSTAN MOTOR. 3-12. IDLER PLATE TOT AL ASS'Y & S/T REEL TABLE REMOVAL (See Fig.3-19) a. Remove one POLY WASHER from the REEL GEAR POST and remove the IDLER PLATE TOTAL ASSEMBLY from the MAIN...
  • Page 56 3-13. FE HEAD REMOVAL (See Fig.3-20) Remove one screw fixing the FE HEAD and remove the FE HEAD from the MAINBASE. 3-14. REEL GEAR TOTAL ASS'Y & CONNECT PLATE REMOVAL (Fig.3-21) a. Turn over the DECK MECHANISM and remove one POLY WASHER from the REEL GEAR POST b.

  • Page 57: 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 58 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 d. Make sure that boss "A" of the PINCH LEVER TOTAL ASSEMBLY is positioned at point "B" of the CAM GEAR, as shown in Fig.4-4.
  • Page 59 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 60 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 61 4-3. MECHANICAL MODE (OPERATING THE VCRWITHOUT 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 62: Adjustment Of Tape Transporting System

    5. ADJUSTMENT OF TAPE TRANSPORTI N G 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 63 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 64: See Fig

    B. ADJUSTMENT OF THE A/C HEAD ASS'Y (TILT ADJUSTMENT) TURN THE A/C HEAD TILT SCREW TO THE DIRECTION OF CW a. Play back a T-120 Tape and check the running condition of the TAPE at the lower flanges of the T GUIDE POST ASS'Y ¤æin Fig.
  • Page 65 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 ADJUSTMENT ADJUST BOSS MAIN BASE. a. Connect the path adjustment fixture to PT01 of the MAIN CIRCUIT BOARD. b.
  • Page 66 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 ADJUSTMENT VR595 (PG SHIFTER) MAIN CIRCUIT BOARD Phase generator (PG) shifter decides the VIDEO HEAD switching point when a TAPE is played back. In case the Phase generator (PG) shifter isn't correctly tuned, HEAD switching noise or vertical jitter may occur.
  • Page 67 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 ADJUSTMENT S/T GUIDE ROLLER TAPE TRANSPORTING SYSTEM a. Connect the PATH ADJ. FIXTURE to PT01 of the MAIN CIRCUIT BOARD. b.
  • Page 68 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 ADJUSTMENT S/T GUIDE ROLLER TAPE TRANSPORTING SYSTEM a. Connect the PATH ADJ. FIXTURE to PT01 the MAIN CIRCUIT BOARD. b.
  • Page 69 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 ADJUSTMENT S/T GUIDE ROLLER TAPE TRANSPORTIN SYSTEM a.
  • Page 70 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 71 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 ADJUSTMENT ADJUST BOSS MAIN BASE. a. Connect the PATH ADJ. FIXTURE to PT01 of the MAIN CIRCUIT BOARD. b.

  • Page 72: Exploded View And Parts List

    6. EXPLODED VIEW AND PARTS LIST 6-1. EXPLODED VIEW OF DECK ASS'Y (TOP VIEW)
  • Page 73 6-2. EXPLODED VIEW OF DECK ASS'Y (BOTTOM VIEW)
  • Page 74 6-3. EXPLODED VIEW OF F/L ASS'Y...
  • Page 76 6-4-1. PARTS LIST OF DECK TOTAL ASS'Y LOC. STOCK NO. PART NAME DESCRIPTION NTSC M1000 97PC0245D- DECK TOTAL AS DRN-9200 (2 HD SP/EP NON-DLC) M1000 97PC0246D- DECK TOTAL AS DRN-9201 “(2 HD SP/EP NON-DLC, HEAD CLNR, VCP)” M1000 97PC0247D- DECK TOTAL AS DRN-9401 “(4 HD MONO NON-DLC, HEAD CLNR)”...
  • Page 77 LOC. STOCK NO. PART NAME DESCRIPTION AD001 97PA265871 DRUM PRICE AS CYP-KT112 (2 HD SP MONO DLC) AD001 97PA265971 DRUM PRICE AS CYP-KT212 (2 HD SP/LP MONO DLC) AD001 97PA266071 DRUM PRICE AS CYP-KT412 (4 HD MONO DLC) AD001 97PA253471 DRUM PRICE AS CYP-KT612 (4 HD HI-FI DLC)
  • Page 78 6-4-3. PARTS LIST OF DECK TOTAL ASS' Y LOC. STOCK NO. PART NAME DESCRIPTION STSTEM M10000 PVDKARP94A DECK VCR AS DRP-9400S SECAM M10000 PVDKARS94A DECK VCR AS DRP-9400S AD001 97PA287401 DRUM PRICE AS CYP-KT410W (4HD MONO NON- AD001 97PA287001 DRUM PRICE AS CYS-KT410W SECAM (4HD MONO NON-...
  • Page 79 LOC. STOCK NO. PART NAME DESCRIPTION B1905 97SA414100 L/C BRKT AS K-MECHA B1910 97PA409200 L/C MOTOR AS K-MECHAB1920 97P6538222 L/C MOTOR PCB PHENOL T1.6 B1930 97P6271500 CONN WAFER(ANGLE) 00-8283-0711-0000 B1940 5SSFF1DKM10 CAM SWITCH MMS00320ZMBO B1960 97S2901500 WORM WHEEL DELIN 100 NATURAL A2000 7274300611 SCREW TAPTITE...
  • Page 80 Sony Corporation Home Network Company Osaki West Tec. 2-10-Osaki Shinagawa-Kv, 141-0032 Tokyo, Japan...

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