JVC KV-V8 Guide rail, Rotor assembly How to remove, Stator assembly, Upper drum assembly

Page 18

2.2.16Guide rail

(1)Take out the 5 screws (A) and 1 screw (B).

(2)By expanding the rails on the outer sides of the guide rail, remove the 2 pole base assemblies (supply, take up).

(3)Disengage the 4 claws and remove the guide rail.

Note:

• Before removing the guide rail, it is required to remove the drum assembly.

(A)

Pole base assembly

(A)

 

Claw (B) Claw

(A)

(A) (A)

2.2.18 Rotor assembly

1. How to remove

(1)Remove the stator assembly.

(2)Remove the two screws (B) and remove the rotor assem- bly.

2. How to install

(1)Match the phases of the upper drum assembly and the rotor assembly as indicated in Fig.2-2-18a.

(2)Place the upper drum assembly hole (a) over the rotor assembly holes (b) (with three holes to be aligned) and tighten the two screws (B). (See Fig.2-2-18a.)

Note:

When installing the rotor assembly, note that a normal picture cannot be obtained without ensuring the phase matching as mentioned below.

Guide rail

Claw

Claw

Screws (B)

Screw holes

Upper drum assembly

Rotor assembly

Hole(a)

The hole is not in line but is offset toward the right.

Hole(b)

Fig.2-2-16a

2.2.17Stator assembly

(1) Remove the flat cable.

(2) Remove the two screws (A), (B) and remove the lug wire.

(3) Remove the stator assembly by lifting in the arrow-indi- cated direction. (Take care that the brush spring does not jump out.)

Notes:

Be careful not to lose the brush and spring.

There are some models that do not use the lug wire. Refer to the parts list for these models.

When tightening the screw (B), place the caulked part of the lug terminal near to the shaft of the drum and then tighten it.

After installation, be sure to perform the switching point adjustment according to the electrical adjustment procedure.

Screw (A)

Screw (B)

Drum

 

 

shaft

Lug wire

 

 

 

Lug wire

 

 

(Note)

 

 

Stator

 

 

Screw (A)

assembly

 

 

 

 

 

Flat cable

 

 

 

(Take care not to mix up the

 

Spring

polar faces when installing.)

Brush

Fig.2-2-18a

2.2.19 Upper drum assembly

Notes:

To replace the upper drum assembly only may not be possible with some models. For upper drum assem- bly replacement, refer to the parts list. (When the parts number of the upper drum assembly is not listed on the parts list, then this cannot be replaced.)

When replacement is required, control the up- down movement of the brush. Never apply grease.

When replacing the upper drum assembly, replace it the together with the washer.

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.

(3)Remove the upper drum assembly and remove the washer using tweezers.

Fig.2-2-17a

2-8

Image 18
Contents KV-V8 Specificatios KV-V8J Adjustment information for installation Disassembly flow chartHow to read the disassembly and assembly Disassembly/assembly methodFig. D1 Fig. D4 Mechanism service mode Service positionHow to set the Service position How to set the Mechanism service modeFDP display model FDP display FDP Content Cause EMG detail information Mechanism sensor information Common table of MN*, HD* and M3 Checking for proper mechanical operations Before starting repair and adjustment PrecautionsJigs and tools required for adjustment Manually removing the cassette tape5a Mechanism assembly top side Tape CleaningLubrication DrivePinch roller arm assembly Replacement of major parts Before starting disassemblingHow to set the Mechanism assembling mode 4 A/C head How to removeLoading motor Lever assembly, sub deck assembly, capstan motorReel disk assembly take up Control bracketSub brake assembly take up, control cam Control plateSlide plate Change lever assembly, rotary encoder Take up head, tension arm leverRemove the take up head and tension arm lever Upper drum assembly Rotor assembly How to removeStator assembly Guide rail19a Rotary encoder, change lever assembly, control cam Loading arm assemblies supply, take upAttach the surrounding parts of the guide rail Mechanism timing chart Compatibility adjustment Notes Repeat steps 1 to 10 by using the alignment tape A2FM waveform linearity 3 A/C head phase X-value Height and tilt of the A/C headPlay back the alignment tape a Standard tracking preset Tension pole positionSwitch settings and standard precautions PrecautionRequired adjustment tools Required test equipmentsSlow tracking preset KV-V8 No.49625