JVC DVL720U, DVL522U Before Assembly and Disassembly, Precautions, Assembly and disassembly

Page 5

SECTION 1

DISASSEMBLY

1.1 BEFORE ASSEMBLY AND DISASSEMBLY

1.1.1 Precautions

1.Be sure to remove the power supply unit prior to mount- ing and soldering of parts.

2.When removing a component part that needs to discon- nect the connector and to remove the screw for remov- ing itself, first disconnect the connecting wire from the connector and then remove the screw beforehand.

3.When connecting and disconnecting the connectors, be careful not to damage the wire.

4.Carefully remove and handle the part to which some spacer or shield is attached for reinforcement or insula- tion.

5.When replacing chip parts (especially IC parts), desolder completely first (to prevent peeling of the pattern).

6.Tighten screws properly during the procedures. Unless specified otherwise, tighten screws at a torque of 0.088N•m(0.9kgf•cm).

1.1.2

Assembly and disassembly

 

 

STEP

PART

 

Fig.No.

POINT

NOTE

No.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UPPER CASE

 

Fig. 1-3-1

5(S1a), 4(S1b), 3(S1c),

 

 

1

ASSY

 

 

 

CN1

 

 

(Inc. MONITOR

 

 

 

 

 

–

/

ASSY / E.VF

 

 

 

 

 

 

 

ASSY)

 

 

 

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

2

- - - - - - - - - - - - - - - - -

 

 

DSC BOARD

 

 

(S2), CN2a, CN2b

–

 

 

ASSY

 

 

 

 

 

 

3

COVER (HINGE)

Fig. 1-3-2

2(S3)

–

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)

(2)

 

(3)

(4)

(5)

(1)Indicate the disassembly steps. When assembling, per- form in the reverse order of these steps. This number corresponds to the number in the disassembly diagram.

(2)Indicates the name of disassembly/assembly parts.

(3)Indicates the number in the disassembly diagram.

(4)Indicates parts and points such as screws, washers, springs which must be removed during disassembly/ assembly.

Symbol

Name, Point

S

Screw

LLock, Pawl, Hook

SD Soldering

(Example)

•2 (S1): Remove the two screws (S1) for removing the part 1.

•CN1 : Disconnect the connector1.

•SD1 : Unsolder at the point SD1.

(5)Precautions on disassembly/assembly.

1.1.3 Destination of connectors

Note: Three kinds of double-arrows in connection tables re- spectively show kinds of connector/wires.

↔: Wire ⇔ : Flat wire

: Board to Board connector

[Example]

CONN.

 

CONNECTOR

 

Pin No.

No.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN1

MAIN

CN101

⇔

MONITOR

CN761

40

1.1.4 Disconnection of Connectors (Wires)

Connector

Pull both ends of the connector in the arrow direction, re- move the lock and disconnect the flat wire.

Flat wire

Connector

Fig. 1-1-1 Connector 1

Extend the locks in the direction of the arrow for unlocking and then pull out the wire. After removing the wire, immedi- ately restore the locks to their original positions because the locks are apt to come off the connector.

Flat wire

Connector

Fig. 1-1-2 Connector 2

B-B connector

Pull the board by both the sides in the direction of the ar- row for disconnecting the B-B connector.

Connector

Connector

Fig. 1-1-3 Connector 3

Connector

Fig. 1-1-4 Connector 4

1-1

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Contents 973396-1000 973317-5000630851-7855 714229-8011Table of Contents Important Safety Precautions Safety Check after Servicing Precautions Before Assembly and DisassemblyAssembly and disassembly Destination of connectorsDISASSEMBLY/ASSEMBLY of Cabinet Parts and Board Assembly Disassembly method ∗ 0.147N·m 1.5kgf·cm 19 S 20 SCover CN 10 b 10 a CN 10 aMecha PlateDisassembly/assembly of hinge assembly for 2.5-type LCD 4 Monitor AssemblyDisassembly/assembly of monitor assembly for 2.5-type LCD Disassembly/assembly of hinge assembly for 3.5-type LCD Disassembly/assembly of monitor assembly for 3.5-type LCDDisassembly/assembly of E.VF assembly for the B/W VF 5 E. VF Assembly∗ 0.078 N m 0.8 kgf cm VF Hinge AssyHow to assemble CCD base assembly and CCD board assembly How to remove CCD board assembly and CCD base assemblyReplacement of service repair parts ∗ 0.078 N m 0.8 kgf cmLCD Example in case of the error number E01Emergency Display Monitorassy Service NoteOpblockassy WvfassyPart Name Point Remarks Preliminary Remarks on Adjustment and RepairSlit washer Installation Jig Adjustment DriverJig Connector cable Service Support SystemMechanism assembly/Cassette housing assembly DISASSEMBLY/ASSEMBLY of Mechanism AssemblyBack side of the mechanism assembly Explanation of mechanism modeREV Play Parts Mechanism timing chartSlide deck assembly Main deck assembly Mechanism assemblyFollow chart Configuration Procedures for disassemblyDisassembling procedure table 10d 10cDisassembly/assembly Cassette housing assembly L1b Cassette Housing assembly L1aL1d L1a L1c SuptuW3a W3b 4c Drum assemblyL4a P4b P4a L4bAssembly BSlide deck assemblyGuide roller Assembly CMain deck8c Brake control lever assembly 8a Tension lever assembly/ 8b Slide lever assembly8a Tension lever assembly W7Note 7d P7b S7b Note 7c S7a P7a P7c P7d L7b L7a L7d L7c10b L10 W10a 10c W10a 10d10a W10b 10e 11d 11b 11e W11 Note11c KYODO-SH-P List of procedures for disassemblyCheckup and Adjustment of Mechanism Phase Mechanism Adjustments Locating tension pole Play modeLocating procedure 2b Reel disk TU assembly W2 ⋅1 S2a ⋅2 S2b ⋅1 Tension arm Lever assembly JIG Connector Cable Connection Jig connector cable YTU93082C Jig board CN105 CoverJIGPrecaution PrecautionMonitor Required test equipmentSetup

DVL522U, GR-DVL220U, DVL720U, DVL520U, DVL320U specifications

The JVC DVL320U, DVL520U, DVL720U, GR-DVL220U, and DVL522U are part of JVC's renowned line of digital camcorders that emerged in the early 2000s. Each model showcases an impressive blend of innovative features suited for both amateur enthusiasts and semi-professional videographers alike.

The DVL320U is particularly notable for its compact design and user-friendly interface, making it ideal for capturing everyday moments. It features a 680,000-pixel CCD sensor that provides vibrant image quality and accurate color reproduction. Enhanced with 20x optical zoom and a digital zoom of up to 100x, this model allows users to capture distant subjects clearly. Its built-in digital effects and transition features enable creative video production without needing extensive editing skills.

Moving on to the DVL520U, this model builds upon its predecessor with improved resolution and additional recording formats. The DVL520U supports both VHS-C and S-VHS-C formats, enhancing its versatility for different recording needs. The camera offers excellent low-light performance, aided by its Night Alive feature, which amplifies low-light sensor signals, allowing users to record in dim conditions effectively.

The DVL720U stands out due to its superior optical performance with a 24x optical zoom and enhanced image stabilization technology. With this model, users can expect smoother visuals, particularly in dynamic shooting situations. Alongside a larger LCD screen for easier monitoring, the DVL720U incorporates various shooting modes, including a manual focus option and white balance settings to adapt to multiple shooting environments.

The GR-DVL220U caters to those looking for a portable solution without sacrificing quality. With a combination of high-quality video capture and a compact form factor, this camcorder is ideal for travel and outdoor use. It boasts a Quick Rec function for spontaneous shooting, allowing videographers to capture fleeting moments quickly.

Lastly, the DVL522U enhances connectivity and usability, boasting FireWire input to facilitate easy digital transfer to computers for editing. This feature makes it perfect for aspiring content creators who wish to move their footage to digital platforms seamlessly. Its advanced image processing technology also helps reduce noise and enhance clarity for non-stop recording joy.

In summary, the JVC DVL320U, DVL520U, DVL720U, GR-DVL220U, and DVL522U are impressive camcorders boasting innovative features tailored for various videography needs. With advances in optical zoom capabilities, low-light performance, and connectivity options, JVC has established itself as a key player in the digital video industry during this era.
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