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JVC DVL320U, DVL720U Preliminary Remarks on Adjustment and Repair, Part Name Point Remarks

Models: DVL522U GR-DVL220U DVL720U DVL520U DVL320U

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SECTION 2

MECHANISM ADJUSTMENT

2.1PRELIMINARY REMARKS ON ADJUSTMENT AND REPAIR

2.1.1 Precautions

1.When fastening parts, pay careful attention to the tight- ening torque of each screw. Unless otherwise specified, tighten a screw with the torque of 0.039 N•m (0.4 kgf•cm).

2.Be sure to disconnect the set from the power supply be- fore fastening and soldering parts.

3.When disconnecting/connecting wires, be careful not to get them and their connectors damaged. (Refer to the Section 1.)

4.When replacing parts, be very careful neither to dam- age other parts nor to fit wrong parts by mistake.

2.1.2 Notes on procedure for disassemby/assembly

The disassembling procedure table (Table 2-4-1 on page 2-6, a part of the table is shown below for reference)shows the procedure to disassemble/reassemble mechanism parts.

Carefully read the following explanation before starting ac- tual disassembling/reassembling work. The item numbers (circled numbers)in the following explanation correspond to those appearing under respective columns of the table.

(1)Circled numbers appearing in this column indicate the order to remove parts. When reassembling, follow these numbers in the reverse order. Circled numbers in this column correspond to those appearing in drawings of this section.

(2)This column shows part names corresponding to circled numbers in the left column.

(3)The symbol (T or B)appearing in this column shows the side which the objective part is mounted on.

T =the upper side, B =the lower side

(4)Symbols appearing in this column indicate drawing numbers.

Step Part Name Fig. Point Note Remarks

(5)This column indicates parts and points such as screws, washers, springs, and others to be removed/fitted for disassembling/reassembling the mechanism. Besides such the parts, this column occasionally indicates work- ing points.

P = Spring

W = Washer

S = Screw

∗= Lock (L),soldering (SD),shield,connector (CN), etc.

Example • Remove (W1)=Washer W1.

•∗Remove the solder at (SD 1)=Point SD 1.

•∗Disconnect Å =Connector Å .

(6)Numbers in this column represent the numbers of notes in the text. For example, “1” means “Note 1”.

(For parts that need phase adjustment after reassem- bling, refer to “2.6 MECHANISM ADJUSTMENTS”.)

(7)This column indicates required after disassembling/re- assembling work such as phase adjustment or mecha- nism adjustment.

NO.

 

PART NAME

 

 

FIG.

POINT

NOTE

REMARKS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A C

assett

e housing assembly

T

Fig. 2-4-5

3(S1),(L1a)-(L1d)

1a, 1b, 1c, 1d

Adjustment

 

 

 

 

 

 

 

 

 

 

2a

Reel disk (SUP) assembly

T

Fig. 2-4-6

(W2)

2a, 2b

 

 

 

 

 

 

 

 

 

 

2b

Reel disk (TU) assembly

T

Fig. 2-4-6

(W2)

2a, 2b

 

 

 

 

 

 

 

 

 

 

2c

Reel cover assembly

T

Fig. 2-4-6

(S2b),2(S2a),(W2)

2d

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3a

Tension arm assembly

T

Fig. 2-4-7

(W3a)

3b

 

 

 

 

 

 

 

 

 

 

 

3b

Release guide assembly

T

Fig. 2-4-7

-

 

3a

 

 

 

 

 

 

 

 

 

 

 

3c

Idler arm assembly

T

Fig. 2-4-7

(W3b)

-

 

 

 

3d

Guide arm assembly

T

Fig. 2-4-7

-

 

3a

 

 

3e

Pinch roller arm assembly

T

Fig. 2-4-7

(W3a)

-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4a

Cleaner arm assembly

T

Fig. 2-4-8

(L4a)

4a

 

 

4b

Slant pole arm assembly

T

Fig. 2-4-8

(W4),(L4b),(P4a),(P4b)

4b

 

 

4c

Drum assembly

T

Fig. 2-4-8

3(S4)

-

 

 

 

5a

Guide roller (S) assembly

T

Fig. 2-4-9

(P5)

5a

 

 

5b

Rail assembly

T

Fig. 2-4-9

3(W5a), (W5b)

5b, 5c

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(1)

 

(2)

(3)

(4)

(5)

(6)

(7)

2-1

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JVC DVL320U, DVL720U, DVL522U, DVL520U, GR-DVL220U Preliminary Remarks on Adjustment and Repair, Part Name Point Remarks
Page 16 Page 18

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.