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JVC HR-DVS2EK Service Manual

Mini dv/s-vhs video cassette recorder
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VICTOR COMPANY OF JAPAN, LIMITED
VIDEO DIVISION
Mini DV/S-VHS VIDEO CASSETTE RECORDER
SPECIFICATIONS
GENERAL
Power requirement
Power consumption
Power on
Power off
Temperature
Operating
Storage
Operating position
Dimensions (WxHxD) : 435 mm x 124 mm x 391 mm
Weight
Input/Output
VHS DECK VIDEO/AUDIO
Signal system
Recording system
Format
Signal-to-noise ratio
Horizontal resolution
(SP/LP)
(EP)
Frequency range
Maximum recording time
(SP)
S40894
(LP)
(EP)
Printed in Japan
SERVICE MANUAL
HR-DVS2EK/EU
TV
CABLE/SAT
DV
VHS
1
LCD PROG
AUDIO
– –:– –
TV/VCR
2
1
2
3
4
5
6
3
VPS/PDC
DAILY/QTDN.
WEEKLY/HEBDO
7
8
9
4
4
0000
AUX
MENU
0
1
PROG
30 SEC
ENTER/ENTREE
OK
3
2
START
STOP
DEBUT
FIN
DATE
PR
EXPRESS
DV
VHS
DV
VHS
INSERT
A.DUB
R.A.EDIT
DUB
COPIE
PR
DV IN/OUT
ENTREE/SORTIE DV
(The specifications shown pertain specifically to the model HR-DVS2EU)
DV DECK VIDEO/AUDIO
: AC 220 V – 240 V`, 50 Hz/60 Hz
Signal system
: 33 W
Recording system
: 7.9 W
Format
Cassette
: 5°C to 40°C
Maximum recording time
: –20°C to 60°C
: Horizontal only
: 6.7 kg
Audio recording system
: 21-pin SCART connectors :
IN/OUT x 1, IN/DECODER x 1
RCA connectors:
VIDEO IN x 1, AUDIO IN x 1, AUDIO OUT x 1
S-Video connectors:
TUNER/TIMER
IN x 1, OUT x 1
TV channel storage
DV connector: IN/OUT x 1
capacity
(4-pin, IEEE1394 conformity, digital input/output)
Tuning system
Channel coverage
: PAL-type colour signal and CCIR monochrome
signal, 625 lines
50 fields
: DA4 (Double Azimuth) head helical scan system
: S-VHS/VHS PAL standard
Memory backup time : Approx. 60 min.
: 45 dB
ACCESSORIES
: 250 lines (VHS)
Provided accessories : RF cable,
400 lines (S-VHS)
: 220 lines (VHS)
350 lines (S-VHS)
: 70 Hz to 10,000 Hz (Normal audio)
20 Hz to 20,000 Hz (Hi-Fi audio)
Specifications shown are for SP mode unless otherwise specified.
: 240 min. with E-240 video cassette
E.& O.E. Design and specifications subject to change without notice.
: 480 min. with E-240 video cassette
: 720 min. with E-240 video cassette
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
S-VHS ET
625
PULL-OPEN
START
IN/OUT
: PAL-type colour signal, 625 lines
50 fields
: Digital Component Recording
: DV format (SD mode)
: Mini DV Cassette
(SP)
: 60 min. with M-DV60ME cassette
(LP)
: 90 min. with M-DV60ME cassette
: PCM 48 kHz, 16 bit (2 ch)/
32 kHz, 12 bit (4 ch)
: 99 positions
(+AUX position)
: Frequency synthesized tuner
: VHF 47 MHz – 89 MHz/
104 MHz – 300 MHz/
302 MHz – 470 MHz
UHF 470 MHz – 862 MHz
21-pin SCART cable,
Satellite Controller RM-SD1,
Infrared remote control unit, "R6"
battery x 2
No. 82829
November 2000

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Summary of Contents for JVC HR-DVS2EK

  • Page 1 SERVICE MANUAL Mini DV/S-VHS VIDEO CASSETTE RECORDER HR-DVS2EK/EU CABLE/SAT LCD PROG AUDIO – –:– – TV/VCR VPS/PDC DAILY/QTDN. WEEKLY/HEBDO 0000 MENU PROG 30 SEC ENTER/ENTREE START STOP DEBUT DATE EXPRESS S-VHS ET PULL-OPEN INSERT A.DUB R.A.EDIT START COPIE DV IN/OUT...

  • Page 2: Table Of Contents

    Error rate measuring method ............. 2-41 LOADING MOTOR BOARD ASSEMBLY <55> ..........5-32 2.19 TAPE EJECTION ..................2-42 JOG BOARD ASSEMBLY <85> ............... 5-32 The following table lists the differing points between Models (HR-DVS2EK and HR-DVS2EU) in this series. HR-DVS2EK HR-DVS2EU VIDEO SYSTEM...

  • Page 3: Important Safety Precautions

    Important Safety Precautions Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
  • Page 4 • 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 6: Disassembly

    SECTION 1 DISASSEMBLY 1.1 HOW TO REMOVE THE MAJOR PARTS 1.3 DISCONNECTION OF CONNECTORS (WIRES) 1.1.1 Introduction This set is a double-deck video recorder integrating a Mini DV deck and a VHS deck. Its internal structure is divided into three sections that include the power supply, VHS and DV sections.

  • Page 7: How To Remove The Major Parts

    <Note 5> 1.5 HOW TO REMOVE THE MAJOR PARTS <COM section> When removing the SW REG board assembly or Regula- tor board assembly, unhook the several spacers connect- 1.5.1 Disassembly flow chart ing it with pliers from the top side. This flowchart shows the disassembly procedure for the ex- <Note 6>...
  • Page 8 Knob (Jog) Knob (Shuttle) CN5325 CN5321 CN5322 Foil side Eject SW CN5324 board assembly <Note 1> Foil side CN5323 Jack board <Note 1> assembly Jog board assembly ( S4 ) LED/SW board ( S4 ) assembly Display board ( S4 ) assembly ( S4 ( S4 )

  • Page 9: How To Remove The Major Parts

    1.6 HOW TO REMOVE THE MAJOR PARTS <VHS section> Procedures for Lowering the Cassette holder assembly As the mechanism of this unit is integrated with the Housing 1.6.1 Disassembly flow chart assembly, the holder must be lowered and the two screws un- This flowchart shows the disassembly procedure for the ex- screwed when removing the Mechanism assembly.
  • Page 10 Note: When installing the Mechanism assembly, secure (S3) the screws (S8) in the order of a , b . WR12 WR13 Foil side Foil side <Note 2> <Note 2> (S3) (S3) (S5) CN3014 WR12 WR13 Foil side Foil side CN2601 <Note 2>...

  • Page 11: How To Remove The Major Parts

    1.7 HOW TO REMOVE THE MAJOR PARTS <DV section> 1.7.1 Disassembly flow chart (S5) (S5) This flowchart shows the disassembly procedure for the ex- CN5506 terior parts and electrical parts. (S5) (S5) CN5501 CN5502 Basically, reverse this procedure when assembling them. However, it is required to remove the common section parts as far as 1 “Top cover, Bracket”...
  • Page 12 ( S12 ) ( S5 ) ( S11 ) ( S13 ) ( S5 ) CN5505 CN5502 Earth plate CN5001 ( S13 ) ( S13 ) CN5503 <Note 2> WR21 CN5504 WR22 WR25 WR23 WR24 Fig. D3 Fig. D5 ( S4 ) ( S4 ) ( S4 ) <Note 3>...

  • Page 13: Service Positions

    1.8 SERVICE POSITIONS < Installation > The servicing locations for use in troubleshooting or servic- (1) Stand up the bottom chassis assembly so that the DV/ ing of the set are provided separately for the VHS and DV. Regulator side is in the lower position. (2) Connect the PATCH CORD to the three FPCs then con- SERVICE POSITIONS <VHS SIDE>...

  • Page 14: Service Position

    < Installation > 1.8.2 Service position <DV SIDE> For the PATCH CORDS, see Table 1-8-3. <Removal> The patch cords that are indicated in Table 1-8-3 are in one (1) Remove the top cover and bracket. package. (2) Remove the front panel assembly. (1) Connect a PATCH CORD to the FPC, and connect the (3) Remove the mechanism assembly (DV side) together end to the connector CN1002.

  • Page 15: Mechanism Service Mode

    1.9 MECHANISM SERVICE MODE This model has a unique function to enter the mechanism (5) With lock levers A B on the left and right of the Cassette into every operation mode without loading of any cassette holder assembly pulled toward the front, slide the holder tape.
  • Page 16 1.10 CONNECTION TOP VIEW CN512 Supporting CN703 tape side CN5325 CN506 Foil side Foil side CN2601 Make a CN7508 crease. Treat the wire Foil side Fix the wire by according to the Style pin surely. figure not to Absorb the looseness Foil side Supporting overlap in TP.

  • Page 17: Connection

    Type Connection Fig. Pin No. (FPC/ Symbol ←→ Connected point Connected point WIRE) ←→ MAIN CN7507 JACK CN7002 ←→ MAIN CN3011 DISPLAY CN7001 ←→ REGULATOR CN5301 SW REG CN5201 ←→ REGULATOR CN5322 MAIN CN7508 ←→ REGULATOR CN5321 MAIN CN7509 ←→ REGULATOR CN5325 FAN MOTOR...

  • Page 18: Emergency Display Function

    1.11.1 Displaying the emergency information 1.11 EMERGENCY DISPLAY FUNCTION (1) Transmit the code “59” from the Jig RCU. This unit has a function for storing the history of the past two The FDP shows the emergency content in the form of emergencies (EMG) and displaying them on each FDP.

  • Page 19: Emergency Content Description

    1.11.3 Emergency content description Note: Emergency contents “E08/E09” are for the model with Dynamic Drum (DD). CONTENT CAUSE E01: Loading EMG When the mechanism mode cannot be changed to an- 1 The mechanism is locked in the middle of mode transition. other mode even when the loading motor has rotated 2 The mechanism is locked at the loading end due to the encoder position for more than 4 seconds in the loading direction, [E:01]...

  • Page 20: Emergency Detail Information 1

    1.11.4 Emergency detail information 1 : Mechanism Operation Mode [Table of MN] The status (electrical operation mode) of the VCR and the sta- tus (mechanism operation mode/sensor information) of the Display Mechanism Operation Mode Command standby (Status without executing command) mechanism in the latest emergency can be confirmed based on POWER OFF by EMG occurrence the figure in EMG detail information 1 .

  • Page 21: Emergency Detail Information 2

    1.11.5 Emergency detail information 2 : Mechanism Sensor Information 3 – [Common table of MN and HD] The type of the cassette tape and the cassette tape winding po- sition can be confirmed based on the figure in EMG detail infor- Mechanism Sensor Information Display S-VHS SW...

  • Page 22: Mechanism Adjustment (Vhs)

    SECTION 2 MECHANISM ADJUSTMENT (VHS) 2.1 BEFORE STARTING REPAIR AND ADJUSTMENT 2.1.1 Precautions (1) Unplug the power cable of the main unit before using your Loading motor soldering iron. (2) Take care not to cause any damage to the conductor wires when plugging and unplugging the connectors.

  • Page 23: Jigs And Tools Required For Adjustment

    2. In case of mechanical failure 2.1.4 Jigs and Tools Required for Adjustment If you cannot remove the cassette tape which is loaded be- Roller driver A/C head positioning tool Torque gauge cause of any mechanical failure, manually remove it by tak- PTU94002 PTU94010 PUJ48075-2...

  • Page 24: Maintenance And Inspection

    2.1.5 Maintenance and Inspection 1. Location of major mechanical parts In this chapter, the two mechanism speeds are described by comparing the speeds of the standard type and the high-speed FF/REW type. It is possible to distinguish between these two types of mechanism by the diameters of their capstan pulleys. The capstan pulley diameter for the standard type is approx.
  • Page 25 4. Suggested servicing schedule for main components The following table indicates the suggested period for such Guide rail Roller cam assembly service measures as cleaning,lubrication and replacement. In practice, the indicated periods will vary widely according to environmental and usage conditions.However, the indi- cated components should be inspected when a set is brought for service and the maintenance work performed if neces- sary.
  • Page 26 Symbols and numbers R4 R1 T9 T12 T11 B15 B12 B14 B13 B17 B21 B7 B8 B5 B4 B11 T14 T15 T13 T22 T24 T18 B19 Removal parts (Reference items) Replacement parts 2.2.3 Guide rail 2.2.3 Roller cam assembly 2.2.3 Cassette housing bracket 2.2.3 Opener guide 2.2.3 Door opener 2.2.3 Relay gear...

  • Page 27: Replacement Of Major Parts

    2.2 REPLACEMENT OF MAJOR PARTS 2.2.3 Cassette Holder Assembly 1. How to remove 2.2.1 Before Starting Disassembling (Phase matching (1) Remove the guide rail and roller cam assembly. (See between mechanical parts) Fig.2-2-3a.) The mechanism of this unit is closely linked with the rotary (3 lugs on the guide rail and one lug on the roller cam encoder and system controller circuits.
  • Page 28 (5) While holding the left side of the cassette holder, lift the 2. How to install (Phase matching) cassette holder assembly so that the three legs on the (1) Insert the section A of the drive arm into the section B left side are all released.

  • Page 29: Pinch Roller Arm Assembly

    2.2.6 Audio Control Head Notches Guide hole Notch 1. How to remove Relay gear (1) Remove the two screws (A) and remove the audio con- trol head together with the head base. (2) When replacing only the audio control head, remove the three screws (B) while controlling the compression spring.

  • Page 30: Capstan Motor

    2. How to install (Centering the mounting position) Loading motor board assembly When the capstan motor has once been removed and then reinstalled out of the initial correct position in the rotational Loading motor direction, the capstan motor current may be unstable during Lugs Motor guide operation in high or low temperatures.

  • Page 31: Rotary Encoder

    2.2.10 Rotary Encoder 2.2.12 Change Lever Assembly, Direct Gear, Clutch Gear and Coupling Gear 1. How to remove (1) Remove the screw (A) and remove the rotary encoder 1. How to remove by pulling it up. (See Fig. 2-2-10a.) (1) Release the two lugs of the rotary encoder guide in the arrow-indicated direction and remove the change lever assembly.

  • Page 32: Link Lever

    2.2.13 Link Lever 2.2.14 Cassette Gear, Control Cam and Worm Gear 1. How to remove 1. How to remove (1) Remove the two slit washers. (1) Remove the control cam by lifting it. (2) Remove the link lever by lifting it from the shaft retained (2) Open the two lugs of the cassette gear outward and pull by the slit washers.

  • Page 33: Loading Arm Gear (Supply Or Take-Up Side) And Loading Arm Gear Shaft

    (3) Install the control plate so that the section A of the load- (3) Turn the loading arm gear (take-up side) clockwise so ing arm gear shaft fits into the hole (A) of the control plate, that the notch of the loading arm gear (take-up side) is the section B of the control plate guide into the hole (B), in alignment with the projection of the loading arm gear and the control plate comes under the section C of the...

  • Page 34: Take-Up Lever, Take-Up Head And Control Plate Guide

    2.2.17 Take-up Lever, Take-up Head and Control Plate Guide (1) Remove the spring of the take-up lever from the main deck. Spring (2) Remove the lug (A) of the take-up lever from the main Sub brake assembly deck and pull out the take-up lever and the take-up head Lug(A) (take-up side) together.

  • Page 35: Tension Brake Assembly, Reel Disk (Supply Side) And Tension Arm Assembly

    2.2.21 Tension Brake Assembly, Reel Disk (supply side) 2.2.23 Stator Assembly and Tension Arm Assembly (1) Remove the flat cable. 1. How to remove (2) Remove the two screws (A). (1) Remove the three lugs of the tension brake assembly (3) Remove the stator assembly by lifting in the arrow-indi- from the main deck and pull them off.

  • Page 36: Upper Drum Assembly

    2.2.25 Upper Drum Assembly 1. How to remove (1) Remove the stator assembly and rotor assembly. (2) Loosen the screw of the collar assembly using a 1.5 mm hexagonal wrench and remove the collar assembly. Also remove the brush, spring and cap at one time. Lower drum assembly (3) Remove the upper drum assembly and remove the washer using tweezers.

  • Page 37: Compatibility Adjustment

    2.3 COMPATIBILITY ADJUSTMENT (6) Make sure that the V.PB FM waveform varies in parallel and linearly with the tracking operation again. When re- Notes: quired, perform fine-adjustment of the guide roller of the • Although compatibility adjustment is very important, pole base assembly (supply or take-up side).

  • Page 38: Checking/Adjustment Of The Height And Tilt Of The Audio Control Head

    (3) Press the channel buttons (+, –) simultaneously to enter the manual tracking mode. This also brings tracking to the center (centre). (4) Adjust the AUDIO OUT waveform and Control pulse waveform by turning the screws (1), (2) and (3) little by little until both waveforms reach maximum.

  • Page 39: Checking/Adjustment Of The Standard Tracking Preset

    [Perform adjustment steps (7) to (10) only for 2 Head (1) Play back the alignment tape (A). models equipped with LP mode.] (2) Apply the external trigger signal to D.FF (E), to observe the V.PB FM waveform at the measuring point (D). (7) Then play back the alignment tape (A2).
  • Page 40 Mechanism Timing Chart EJECT CASS- Mechanism mode CASS-INS FF/REW STOP SLOW/STILL PLAY Control plate mark HIGH C CH HIGH Rotary encoder B CH HIGH A CH Control cam angle 264. 318. 412. Rotary encoder 114. 150. 167. 178. 207. 218. 240.
  • Page 41 2-20...

  • Page 42: Mechanism Adjustment (Dv)

    MECHANISM ADJUSTMENT (DV) (5) : Parts to be removed in disassembly/assembly, such as 2.9 PREPARATION screws, washers and springs, and the points. 2.9.1 Precautions (1) Observe the specified screw tightening torque when at- Symbol Name & Point taching parts. The torque should be 0.04 Nm (0.4 kgfcm) unless otherwise specified.

  • Page 43: Disassembly/Assembly Of The Mechanism Assembly

    2.10 DISASSEMBLY/ASSEMBLY OF THE MECHANISM ASSEMBLY 2.10.1 Introduction The disassembly and assembly of the mechanism assem- To set the ASSEMBLY mode, apply 3 V DC to the electrodes bly should usually be performed in the ASSEMBLY mode. on the upper part of the loading motor as shown in Fig. 2- (Table 2-10-1) 10-7.
  • Page 44 2. Setting/checking the ASSEMBLY mode DC 3 V Motor Bracket Assembly (Loading Motor) Wire (Brown) Note: • In this ASSEMBLY mode, only the 2 gear teeth of the rotary encoder are marked (red coloring). Marking Wire (Red) (Colored red) Rotary Encoder <...

  • Page 45: Mechanism Timing Chart

    2.11 MECHANISM TIMING CHART See following table (Table 2-11-1). MODE ASSEMBLY LOADING END C-IN S. FF PLAY STOP FF/REW PARTS ROTARY ENCODER ROTARY ENCODER 33.33 166.66 193.33 226.66 273.33 306.66 MAIN CAM SUB CAM POLE BASE S/REV PLAY CTL PLATE FF/REW ON 1 MAIN BRAKE(SUP)

  • Page 46: Mechanism Assembly/Disassembly Procedure Table

    2.12 MECHANISM ASSEMBLY/DISASSEMBLY PROCEDURE TABLE Step Fig. /Loc Part Name Point Note Discription A Cassette housing assembly/ B Mechanism assembly T 2-13-1 2(S1),(L1) – (L5) 1 Drum assembly T 2-13-2 3(S2) 2 Motor bracket assembly T 2-13-2 4(S2) 3 Middle catcher assembly T 2-13-3 3(S2) —...
  • Page 47 TOP VIEW – Fig. 2-12-1 2-26...

  • Page 48: Disassembly/Assembly

    2.13 DISASSEMBLY/ASSEMBLY <Note 1> : If the wires for the cassette housing motor are 1. A Cassette Housing Assembly/ B Mechanism Assembly connected to the circuit board, remove them be- fore disassembly. ( S1 ) ( S1 ) ( L2 ) ( L4 ) ( L5 ) <Note1>...
  • Page 49 3. 3 Middle Catcher Assembly/ 4 Reel Cover Assembly <Note 5> : Once the reel cover assembly has been re- moved, the parts located below it tend to slip out easily: Be careful. ( S2 ) 11 ( S2 ) ( S2 ) ( S2 ) <Note5>...
  • Page 50 5. 9 EXIT Guide Arm Assembly/ 10 Swing Arm Assembly ( W1 ) Fig. 2-13-5 6. 11 Sub Deck Assembly/ 12 Main Brake (Sup) Assembly/ 13 Main Brake (Take up) Assembly <Note 9> : When attaching the sub deck assembly, make sure to adjust the phase of the control plate.
  • Page 51 7. 14 Reel disk assembly (Sup) / 15 Reel disk assembly (Take up) / 16 Prism / 17 Control plate ( S2 ) ( L12 ) ( L12 ) Fig. 2-13-7 8. 18 Guide rail (Take up) assembly / 19 Guide rail (Sup) assembly / 20 Base plate assembly <Note 10>...
  • Page 52 9. 21 Ent. guide base assembly / 22 Worm wheel 2 / 23 Timing belt / 24 Center gear assembly <Note 11> : How to attach the worm wheel 2 22 . ( S2 ) Phase alignment <Note11> Mark (Red) Align the phase of the rotary encoder assembly 34 , then attach it by aligning the phase hole of the mecha- nism assembly.
  • Page 53 11. 29 Tension control arm assembly/ 30 Brake control arm assembly / 31 Charge arm assembly <Note 12> : How to attach the tension control arm assem- bly 29 / Brake control arm assembly 30 . ( L16 ) ( W1 ) ( L17 ) <Note12>...
  • Page 54 13. 34 Rotary encoder assembly / 35 Main cam / 36 Arm gear 1 assembly / 37 Centering arm assembly <Note 14> : How to attach the rotary encoder assembly 34 . Mark (colored : red) ( S2 ) ( S2 ) <Note14>...
  • Page 55 14. 38 Sub cam / 39 Arm gear 2 assembly / 40 Clutch lock lever assembly <Note 17> : How to attach the sub cam 38 . Boss ( S2 ) <Note17> Phase alignment Phase alignment <Note17> Phase alignment <Note18> ( L19 ) Align the phases of the arm gear 2 assembly 39 and clutch lock lever assembly 40 , then attach them by...

  • Page 56: List Of Procedures For Disassembly

    2.14 LIST OF PROCEDURES FOR DISASSEMBLY 14(S3) (W2) (S2) (S2) (S2) (S2) (P3) (W1) 6(S2) 9(S2) (S2) 7(S2) 8(S2) (S2) (S2) (S2) (S2) (S2) (S2) (S2) (S2) (S2) 31(S2) (S2) (S2) (S2) (S2) (S2) (W1) (S2) (S2) (W1) (S2) (S2) ADJ.

  • Page 57: Mechanism Disassembly/Assembly Sheet

    2.15 MECHANISM DISASSEMBLY/ASSEMBLY SHEET Fig. No. Type Attachin 2-13-1 2-13-2 2-13-3 Ref. Fig. 2-13-4 2-13-6 A Cassette housing assembly Drum assembly 4 Reel cover assembly ( S2 ) ( S1 ) ( S2 ) ( S2 ) ( S2 ) ( S1 ) S2×3 S2, L6×2...
  • Page 58 2-13-7 2-13-8 2-13-9 2-13-12 2-13-13 2-13-14 2-13-15 7 Band arm plate sub 11 Sub deck assembly 12 Main 13 Main assembly Brake(Sup) Brake(Take up) ( S2 ) assembly assembly ( S3 ) ( P5 ) ( P4 ) ( W2 ) ( S2 ) ( P2 ) ( S2 )

  • Page 59: Mechanism Phase Check/Adjustment

    2.16 MECHANISM PHASE CHECK/ADJUSTMENT See Fig. 2-16-1. Worm Wheel 2 Arm Gear 1 Assembly See Fig. 2-13-9A. See Fig. 2-13-13B. Rotary Encoder Assembly See Figs. 2-13-9A and 2-13-13A. Arm Gear 2 Assembly See Fig. 2-13-14A. Sub Cam See Fig. 2-13-14A. Main Cam See Figs.

  • Page 60: Positioning The Tension Pole

    2.17 POSITIONING THE TENSION POLE See Fig. 2-17-1. B section Tension Arm Sub Assembly D section Screw A Fig. 2-17-1 Adjustment Method Note: • Remove the cassette housing assembly in advance. 1. Set the mechanism mode to the PLAY mode. (See pages 2-20 and 21.) 2.

  • Page 61: Compatibility And Error Rate Adjustments

    2.18 COMPATIBILITY AND ERROR RATE ADJUSTMENTS 2. Procedure 1. Take out the 7 screws (1 to 7), then remove the top cover. (See Fig. COM1 on page 1-3 of section 1.5.) 2.18.1 Preparation 2. Connect the jig connector cable to CN1101 on the DV Before disassembly and adjustment, back up the data stored MAIN board.

  • Page 62: Linearity Adjustment

    2.18.3 Linearity adjustment 2.18.4 PB switching point adjustment The following flowchart shows the linearity check/adjustment The following flowchart shows the PB switching point adjust- procedure. ment procedure. Connect an oscilloscope (CH: + Slope) and, while triggering Load the alignment tape. it with the HID signal, observe the ENV OUT waveform.

  • Page 63: Tape Ejection

    2.19 TAPE EJECTION 3. If the tape is slack, wind it up by turning the shaft on the If a loaded cassette tape cannot be ejected due to a failure topside of the capstan motor in the direction of the arrow in the electrical circuitry, take the cassette tape out using the using a pointed tool (chip IC replacement jig).

  • Page 64: Electrical Adjustment (Vhs)

    SECTION 3 ELECTRICAL ADJUSTMENT (VHS) 3.1 PRECAUTION Jig RCU The following adjustment procedures are not only necessary [Data transmitting method] Depress the “ ” ( 3 ) button after replacement of consumable mechanical parts or board after the data code is set. assemblies, but are also provided as references to be re- ferred to when servicing the electrical circuitry.

  • Page 65: Servo Circuit

    (1) Record the signal (A2) in the mode (B1), and play back the recorded signal. (2) Press the channel buttons (+, –) simultaneously to enter the manual tracking mode. This also brings tracking to the center (centre). (3) Set the VCR to the FWD slow (+1/6×) mode. (4) Transmit the code (F) from the Jig RCU to adjust so that Fig.

  • Page 66: Ee Y Level

    3.3.2 EE Y level (7) Release the EVR mode of the VCR by transmitting the code (F1) from the Jig RCU again. (When the EVR mode • Signal (A1) Ext. input is released, the adjusted data is memorized.) • (A2) Color (colour) bar signal [PAL] (8) Repeat steps (2) to (7) in the mode (B2).

  • Page 67: Video Eq (Frequency Response)

    (9) Adjust with the channel buttons (+, –) on the VCR (or on (7) Release the EVR mode of the VCR by transmitting the code (F1) from the Jig RCU again. (When the EVR mode the remote controller) so that the higher level channel be- is released, the adjusted data is memorized.) comes the specified value (G) of the note "B"...

  • Page 68: Audio Circuit

    3.4 AUDIO CIRCUIT 3.5 SYSCON CIRCUIT [HR-DVS2EU] Notes: Note: • This adjustment should be done after the “REC color • When perform this adjustment, remove the Mechanism (colour) level adjustment” for the video circuit has assembly. been completed. • GND (Ground) should be taken from the Tuner shield 3.5.1 Timer clock case.

  • Page 69: Electrical Adjustment (Dv)

    ELECTRICAL ADJUSTMENT (DV) 3.6 PREPARATION 3.6.4 Setup 1. Setup for computer adjustment 3.6.1 Precautions (1) The DV section of this model is based on a special ad- — Setup by extending the jig connector — justment method using a PC. However, ordinary adjust- ment is required only when the part listed below has been When performing the adjustment by the Service Support Software, replaced.

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