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

Page 16 Page 18
Page 17
Image 17
JVC DVL320U, DVL720U, DVL522U, DVL520U, GR-DVL220U Preliminary Remarks on Adjustment and Repair, Part Name Point Remarks
Page 16 Page 18

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