Pioneer KEH-1700/X1M/UC User manual

PIONEER’

The

Art

Entertainment

Service

anual

CRT2145

MECHANISM

ASSY

CASSETTE

MECHANISM

NOTE:

This

service

manual

describes

the

operation

the

cassette

mechanism

incorporated

the

models

listed

below.

When

performing

repairs,

use

this

manual

together

with

the

specific

manual

for

the

model

under

repair.

Model

Service

Manual

Mechanism

Assy

KEH-1700/X1M/UC

KEH-1750/X1M/ES

CRT2134

CZX3049

KEH-1700/X1M/EW

KEH-1730/X

1M/EW

CRT2133

CZX3050

KEH-1010QR/X1M/EE

KEH-10500R/X1M/ES

CRT2122

KEH-10500RS/X1M/ES

CZX2994

KEH-1030/X1M/ES

KEH-1030SW/X1M/ES

CRT2122

CONTENTS

FLOWCHART

OPERATIONAL

PART

MOVEMENT

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NAMES

PARTS

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OUTLINE

ELECTRIC-PART

LINKAGE

MAIN

OPERATIONS

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DISASSEMBLY

PROCEDURES

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PIONEER

ELECTRONIC

CORPORATION

4-1,

Meguro

1-Chome,

Meguro-ku,

Tokyo

153-8654,

Japan

PIONEER

ELECTRONICS

SERVICE

INC.

P.O.Box

1760,

Long

Beach,

90801-1760

U.S.A.

PIONEER

ELECTRONIC

[EUROPE]

N.V.

Haven

1087

Keetbergiaan

9120

Melsele,

Belgium

PIONEER

ELECTRONICS

ASIACENTRE

PTE.LTD.

501

Orchard

Road,

#10-00,

Wheelock

Place,

Singapore

238880

PIONEER

ELECTRONIC

CORPORATION

1997

Grice

derpraean

nen

CASSETTE

MECHANISM

(8)

The

Selector

Gear

rotates

180

degrees,

and

locks

with

the

Gear

Lock

Arm

(9)

half

rotation

(180

degrees)

the

Selector

Gear

the

Conversion

Lever

and

the

Changing

Arm

Assy

move.

(10)

The

Pinch

Arms

(F)

Assy

(PS)

and

(R)

Assy

(PS)

and

43)

and

the

Slide

Switch(SW3)

are

switched

the

Changing

Arm

Assy

®.

the

same

time,

the

Head(HD1)

moved

upward

and

downward

the

linked

Adjuster

Link

(X)

The

Gear

Arm

Assy

switched

the

Arm

(A)

Assy

and

Arm

change

the

direction

(FWD

and

REV).

FWD

operation

44)

Selector

Gear

@7)

Gear

Lock

Arm

180°

Gear

One

(5)

Reel

Spindle

Assy

(D)

Arm

wis

49)

Gear

Arm

Assy

(A)

Assy

Conversion

Lever

@4)

nis)

Pinch

Arm

(R)

Assy

(PS)

(3ks

Changing

Arm

Assy

(4)

Fig.

5-1

REV

operation

Fig.

5-2

Slide

Switch(Sw3)

(00

4.2

MANUAL

PROGRAM

OPERATION

(1)

Pressing

the

and

REW

Lever

(AT)

and

simultaneously

moves

the

Program

Arm

the

direction

shown

the

arrow,

the

pressure

the

Program

Arm

Spring

@).

(Fig.6)

The

Program

Arm

then

moved

further

the

guiding

hole

the

lever.

(3)

The

movement

the

Program

Arm

conveyed

the

Change

Lever

(B)

Selector

Link

(B)

Ratchet

and

then

Gear

Lock

Arm

(4)

The

Gear

Lock

Arm

unlocked.

The

Dash

Spring

causes

the

Selector

Gear

rush

and

engage

with

the

Detector

Gear

48.

The

Selector

Gear

rotates.

(5)

The

projecting

portion

the

cam

the

Selector

Gear

taps

the

Ratchet

4).

The

Gear

Lock

Arm

released

from

the

Ratchet

4),

returns

the

given

position,

and

locks

the

Selector

Gear

Lock

Arm

Detector

Gear

Ratchet

CASSETTE

MECHANISM

(6)

Due

the

Lock

the

Gear

Lock

Arm

the

Selector

Gear

rotates

180

degrees

and

stops.

half

rotation

(180

degrees)

the

Selector

Gear

the

Conversion

Lever

and

the

Changing

Arm

Assy

moves.

The

Pinch

Arm

(F)

Assy

(PS)

and

(R)

Assy

(PS)

(@@

and

43)

and

the

Slide

Switch(SW3)

are

switched

the

Changing

Arm

Assy

@),

the

same

time,

the

Head(HD1)@

moved

upward

and

downward

the

linked

Adjuster

Link

(X)

The

Gear

Arm

Assy

switched

the

Arm

(A)

Assy

(®

and

Arm

change

the

direction

rotation

(FWD

and

REV)

the

Reel

Spindle

Assy

(D)

Dash

Spring

Program

Arm

rogram

Arm

Spring

Guiding

hole

lever

Change

Lever

(B)

Press

the

and

REW

Levers

(AT)

imultaneously.

Fig.

CASSETTE

MECHANISM

4.3

AUTO

REPLAY

OPERATION

(1)

When

the

rotation

the

Reel

Spindle

Assy

(D)

(2)

(3)

stops,

the

detection

mechanism

operates.

(For

the

operation

the

detection

mechanism,

refer

4.1

OPERATION

THE

DETECTION

MECHANISM.)

After

detection,

the

system

operates

reverse.

The

Changing

Arm

Assy

@®

moves

and

the

linked

Adjuster

Link

(X)

taps

the

Lock

Arm

(A)

unlock

the

and

REW

Levers

(AT)

and

6).

The

and

REW

Levers

(AT)

(80

and

6))

return

the

given

position

the

pressure

the

FF/REW

Lever

Spring

Then

the

Head

Plate

Assy

(S)

pushed

out

the

pressure

the

Head

Plate

Spring

69.

Head

Plate

Spring

Lock

Arm

(A)

46)

Adjuster

Link

(X)

FF/REW

Lever

Spring

REW

Lever

(AT)

6y 80

Lever

(AT)

Fig.

4.4

CASSETTE

INSERTION

AND

OPERATION

(1)

(2)

(3)

(4)

(5)

Inserting

cassette

rotates

the

Center

Plate

Spring

(B)

the

reverse

direction

activate

pressure

the

withdrawal

direction.

The

Tape

Hooker

withdraws

the

cassette

the

pressure

the

Spring.

The

Tape

Hooker

taps

the

Eject

Cam

Lock

Assy

unlock

the

Eject

Cam

Then

the

Eject

Cam

moves

the

direction

shown

arrow

the

Fig.8.

The

Eject

Cam

lowers

the

Cassette

Hanger

(X)

and

the

Head

Plate

Assy

(S)

moves

forward.

The

tooth

the

Cassette

Hanger

(X)

shifts

the

Power

Switch(SW1)

ON.

The

tooth

the

Cassette

Hanger

(X)

shifts

the

Power

Switch(SW1)

ON.

The

Cassette

Hanger

(X)

Lowers.

Center

Plate

Eject

Cam

Lock

Assy

Spring

(B}

Eject

Cam

+«—

Tape

Hooker

;

Head

Plate

Assy

(S)

Insert

cassette.

Fig.

CASSETTE

MECHANISM

4.5

MUTE

MECHANISM

(1)

Pressing

the

Lever

(AT)

REW

Lever

(AT)

(FF/REW

operation)

retracts

the

Head

Plate

Assy

(S)

Retreat

(2)

When

the

Head

Plate

Assy

(S)

retracts,

the

Mute

Arm

(N)

presses

the

Mute

Switch(SW2)

shift

ON.

E=2

Mute

Switch(Sw2)

4.6

OPERATION

(IN

THE

FWD

Fig.

DIRECTION)

(1)

When

the

Lever

(AT)

pressed,

locks

with

the

Lock

Arm

(A)

(2)

The

tilted

portion

the

Lever

(AT)

retracts

the

Head

Plate

Assy

(S)

When

the

Head

Plate

Assy

(S)

moves

backward,

the

Pinch

Arm

(F)

Assy

(PS)

moves

away

from

the

Flywheel

Assy

(BF)

42.

(3)

Then,

the

Reel

Spindle

Assy

(D)

rewinds

the

tape

(with

the

clutch

mechanism

inactivated).

Reel

Spindle

Assy

(D)

(5)

Pinch

Arm

(F)

Assy

(PS)

Tilted

portion

the

Lever

Head

Plate

Assy

(S)

Lever

(AT)

Fig.

CASSETTE

MECHANISM

4.7

REW

OPERATION

(IN

THE

FWD

DIRECTION)

(1)

(2)

(3)

(4)

When

the

REW

Lever

(AT)

pressed,

locks

with

the

Lock

Arm

(A)

The

tilted

portion

the

REW

Lever

(AT)

retracts

the

Head

Plate

Assy

(S)

When

the

Head

Plate

Assy

(S)

moves

backward,

the

Pinch

Arm

(F)

Assy

(PS)

moves

away

from

the

Flywheel

Assy

(BF)

(2.

The

tooth

the

REW

Lever

(AT)

presses

the

Change

Lever

(B)

The

Change

Lever

(B)

links

the

Arm

(B)

@9,

Arm

42,

and

then

Gear

Arm

Assy

The

Gear

Arm

Assy

moves

toward

the

oppo-

site

side

the

Reel

Spindle

Assy

(D)

for

the

playback

and

engages

with

the

other

Reel

Spindle

Assy

(D)

rewind

the

tape.

4.8

AMS

OPERATION

(1)

(2)

(3)

(4)

The

and

REW

Levers

(AT)

(80

and

are

locked

the

Lock

Arm

(A)

The

Release

Arm

pulled

the

Plunger(SO1)

The

Release

Arm

strikes

the

Lock

Arm

(A)

unlock

it.

The

and

REW

Levers

(AT)

(80

and

are

returned

the

pressure

the

FF/REW

Lever

Spring

64,

the

Head

Plate

Assy

(S)

pushed

out,

and

the

system

plays

back.

Gear

Arm

Assy

}=—@7)

Lock

Arm

(A)

Arm

(B)

Change

Lever

(B)

REW

Lever

(AT)

Fig.

Release

Arm

63-—~|

Plunger(SO1)

Lock

Arm

(A)

Fig.

CASSETTE

MECHANISM

4.9

OPERATION

(CASSETTE

EJECTION)

(1)

Press

the

Eject

Lever

@).

The

Eject

Lever

pushes

the

Eject

Cam

The

cam

(tilted

portion)

the

Eject

Cam

retracts

the

Head

Plate

Assy

(S)

(2)

Then,

the

Head

Plate

Assy

(S)

pushes

the

Pinch

Arm

(F)

Assy

(PS)

and

(R)

Assy

(PS)

((

and

retract

them.

(3)

The

Cassette

Hanger

(X)

lifted

the

projected

portion

the

Eject

Cam

The

lifted

Cassette

Hanger

(X)

shifts

the

Power

Switch{SW1)

OFF.

the

same

time,

the

Return

Link

pushes

the

Center

Plate

rotate

the

Center

Plate

Spring

(B)

the

reverse

direction.

The

pressure

the

Center

Plate

Spring

(B)

@®

caus-

the

Tape

Hooker

move

toward

the

ejection

direction.

The

Tape

Hooker

moves

the

Eject

Cam

Lock

Assy

lock

the

Eject

Cam

20.

The

cassette

ejected

the

Tape

Hooker

62.

Tape

Hooker

Cassette

Hanger

(X)

Center

Plate

Power

Switch

Spring

(B)

Projected

portion

the

Eject

Cam

Eject

Lever

@)}—

Head

Plate

Assy

(S)

Fig.

CASSETTE

MECHANISM

DISASSEMBLY

PROCEDURES

|1-1

Open

the

teeth

the

Eject

Lever

2),

Cassette

Hanger

(X)

and

Main

Chassis

Assy

©.

1-2

While

depressing

the

Eject

Lever

@),

shift

the

Cassette

Hanger

(X)

toward

the

left

side

and

remove

it.

Main

Chassis

Assy

Eject

Lever

Cassette

Hanger

(X)

Return

Link

Fig.

|2-1

Remove

the

Main

Belt

careful

not

damage

stain

the

belt

with

oil

grease.

2-2

Remove

the

Screw

remove

the

Mute

Arm

Collar

and

Mute

Arm

(N)

6).

Mute

Arm

(N)

€3

Mute

Arm

Collar

Main

Belt

Screw

|3-1

Remove

the

washers

@and

the

washers

(3.

3-2

Remove

the

Flywheel

Assys

42,

(6.

Flywheel

Assy

(BF)

Flywheel

Assy

(BR)

(2)

Washer

CASSETTE

MECHANISM

|4-1

Remove

the

Selector

Link

(B)

from

the

tooth

the

Ratchet

4).

Reel

Base

Assy

Ratchet

Selector

Link

(B)

4-2

Loosen

the

four

Screws

remove

the

Reel

Screw

Base

Assy

@).

693

Pulley

Gear

Sub

Belt

(C)

Motor

Assy(M1)

|5-1

Remove

the

Sub

Belt

(C)@

careful

not

damage

stain

the

belt

with

oil

grease.

5-2

Remove

the

Pulley

Gear

89.

5-3

Loosen

the

Screws

and

remove

the

Motor

Assy(M1)

@3.

Idle

Pulley

(A)

Head

Plate

Spring

Power

Switch(SW1)

Washer

Screw

6-1

Loosen

the

Screw

fi)

remove

the

Power

Switch(SW1)

6-2.

Remove

the

Idle

Pulley

(A)

63.

6-3

Remove

the

Head

Plate

Spring

68.

CASSETTE

MECHANISM

|7-1

Remove

the

Gear

Arm

Assy

7-2

Remove

the

Washer)

remove

the

Roller

(A)

and

Roller

(B)

8-1

Remove

the

Washer

remove

the

Conversion

Lever

Gear

Arm

Assy

Roller

(B)

Roller

(A)

Washer

Conversion

Lever

Washer

9-1

Remove

the

Screws),

remove

the

Lever

Bracket

Assy

(D)

9-2

Remove

the

Selector

Link

(B)®

Lever

Bracket

Assy

(D)

Selector

Link

(B)

Screw

@®

Screw

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