Orion COMBI 3601VT - Confirmation and Adjustment of Tape Running Mechanism

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MECHANICAL

ADJUSTMENTS

1-4:

CONFIRMATION

OF

VSR

TORQUE

1.

Operate

within

4~5

seconds

after

the

reel

disk

begins

to

turn.

2.

Install

the

Torque

Gauge

(JG002F)

and

Adapter

(JG002B)

on

the

S

Reel.

Set

to

the

Rewind

mode.

(Refer

to

Fig.1-4)

3.

Then,

confirm

that

it

indicates

120~180gfecm.

NOTE

Install

the

Torque

Gauge

on

the

reel

disk

firmly.

Press

the

REW

button

to

turn

the

reel

disk.

1-5:

CONFIRMATION

OF

REEL

BRAKE

TORQUE

(S

Reel

Brake)

(Refer

to

Fig.

1-4)

1.

Set

to

the

STOP

mode.

2.

Move

the

Idler

Ass'y

from

the

S

Reel.

3.

Install

the

Torque

Gauge

(JG002F)

and

Adapter

(JG002B)

on

the

S

Reel.

Turn

the

Torque

Gauge

(JG002F)

clockwise.

4.

Then,

confirm

that

it

indicates

60~100gfecm.

(T

Reel

Brake)

(Refer

to

Fig.

1-4)

1.

Set

to

the

STOP

mode.

2.

Move

the

Idler

Ass'y

from

the

T

Reel.

3.

Install

the

Torque

Gauge

(JG002E)

and

Adapter

(JG002B)

on

the

T

reel.

Turn

the

Torque

Gauge

(JGO02E)

counterclockwise.

4.

Then,

confirm

that

it

indicates

45~70gfecm.

Torque

Gauge/Adapter

(JGO02F/JGO02B)

Torque

Gauge/Adapter

(JG002E/JG002B)

NOTE

If

the

torque

is

out

of

the

range,

replace

the

following

parts.

Check

item

Replacement

Part

idler

Ass'y/Clutch

Ass'y

T

Brake

Spring/Tension

Spring

D1-2

2.

CONFIRMATION

AND

ADJUSTMENT

OF

TAPE

RUNNING

MECHANISM

Tape

Running

Mechanism

is

adjusted

precisely

at

the

factory.

Adjustment

is

not

necessary

as

usual.

When

you

replace

the

parts

of

the

tape

running

mechanism

because

of

long

term

usage

or

failure,

the

confirmation

and

adjustment

are

necessary.

2-1:

GUIDE

ROLLER

1.

Playback

the

VHS

Alignment

Tape

(JG001C

or

JGO01E).

(Refer

to

SERVICING

FIXTURE

AND

TOOLS)

2,

Connect

CH-1

of

the

oscilloscope

to

TP4002

(Envelope)

and

CH-2

to

TP4001

(SW

Pulse).

3.

Press

and

hold

the

Tracking-Auto

button

on

the

remote

control

more

than

2

seconds

to

set

tracking

to

center.

4.

Trigger

with

SW

Pulse

and

observe

the

envelope.

(Refer

to

Fig.

2-1-A)

5.

When

observing

the

envelope,

adjust

the

Adjusting

Driver

(JGO05)

slightly

until

the

envelope

will

be

flat.

Even

if

you

press

the

Tracking

Button,

adjust

so

that

flatness

is

not

moved

so

much.

6.

Adjust

so

that

the

A

:

B

ratio

is

better

than

3

:

2

as

shown

in

Fig.

2-1-B,

even

if

you

press

the

Tracking

Button

to

move

the

envelope

(The

envelope

waveform

will

begin

to

decrease

when

you

press

the

Tracking

Button).

7.

Adjust

the

PG

shifter

during

playback.

(Refer

to

the

ELECTRICAL

ADJUSTMENTS)

NOTE

After

adjustment,

confirm

and

adjust

A/C

head.

(Refer

to

item

2-2)

CH-1

Envelope

(P4002)

CH-1

CH-2

Track

Track

CH-2

SW

Pulse

(TP4001)

oe

a

eas

Ce

(1)

(2)

Entrance

Exit

‘Tm

A:B=3:2

Fig.

2-1-B

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