JVC KV-V8 service manual Control plate, Mechanism timing chart

Page 21

2.3.5 Control plate

(1)Attach the control plate by aligning the 2 alignment holes on the control plate with the alignment holes on the main deck assembly as well as the alignment holes on the take up lever. As the take up lever is pulled by a tension spring, use a pair of tweezers or similar too to align the holes.

(2)After attaching the control plate, lock it with the slit washer and control bracket.

	Control braket
Holes align with	Control plate
holes in deck	Control plate

Hole of take up lever align
with hole in deck	Slit washer (red)

Fig. 2-3-5a

2.4 Mechanism timing chart

MODE

C-LOAD

C-INS

W-FWD

FWD

S.FWD

S.REV

REV

STOP

FF/REW

0

LOADING

W

F

R

S

FF

PARTS

SLIDE PLATE

0 mm

4 mm

21 mm

24 mm

26 mm

32 mm

34 mm

37.5 mm

43 mm

CONTROL CAM

0°

30.6°

160.4°

183.3°

198.6°

244.5°

259.7°

286.5°

328.5°

L S A

L A B

L S C

A

ROTARY

B

ENCODER

C

POLE BASE ASSY

PINCH ROLLER CAM

UP

(UP/DOWN)

DOWN

PINCH ROLLER

PRESS

(CAPSTAN)

FREE

LOAD END

TENSION ARM ASSY

UN LOAD END

TENSION ARM

ON

W ON

(SPRING)

PRELOAD

OFF

SUP

SUP

IDLER

CENTER

TU

TU

IDLER

UP

(UP/DOWN)

DOWN

GUIDE ARM

MAIN BRAKE ASSY

ON

(SUP)

OFF

MAIN BRAKE ASSY

ON

(TU)

OFF

SUB BRAKE ASSY

ON

CONTACT

(SUP)

OFF

SUB BRAKE ASSY

ON

CONTACT

(TU)

OFF

ON

CAPSTAN BRAKE

OFF

ON

C.HOUSING GEAR

OFF

TU LEVER

PLAY

S. REW

STOP

MECHANISM

REC

SLOW (FWD)

SLOW (REV)

FF/REW

NOT USED

REC. P

BACK

MECHA

MODE

ASSEMBLY

EJECT

STILL (FWD)

STILL (REV)

SPACE

STOP

SERVICE

F. FF

Table

2-4a

2-11

Image 21

Contents KV-V8 Specificatios KV-V8J How to read the disassembly and assembly Disassembly flow chartAdjustment information for installation Disassembly/assembly methodFig. D1 Fig. D4 How to set the Service position Service positionMechanism service mode 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 Jigs and tools required for adjustment Before starting repair and adjustment PrecautionsChecking for proper mechanical operations Manually removing the cassette tape5a Mechanism assembly top side Lubrication CleaningTape DriveHow to set the Mechanism assembling mode Replacement of major parts Before starting disassemblingPinch roller arm assembly 4 A/C head How to removeReel disk assembly take up Lever assembly, sub deck assembly, capstan motorLoading motor 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 Stator assembly Rotor assembly How to removeUpper drum 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 Tension pole position Standard tracking presetRequired adjustment tools PrecautionSwitch settings and standard precautions Required test equipmentsSlow tracking preset No.49625 KV-V8