Columbia C690-TR User manual

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GENERAL

INFORMATION

The

Columbia

Model

C690-TR

tape recorder

is

a two-speed

tape

recorder

designed

to

play

and record

monaurally,

two

tracks

on standard

width recoiding

tape.

-

Recordings

may

be made from

a

phonograph,

radio,

or

television

receiver

as

well

as

those

made

direcily

from

the microphone.

_

The

two

tape

speeds

are 7 L/2

and

3

3/4 ips.

Using both

tracks,

the recording

and

playing

times

are as follows:

Reel

Size

5"

(600

ft.

)

H('WARD

W.

SAIUIS

&

The

lieting

of

any

available replacement

part

herein does

not

conetitute

in

any case

a

recommendation,

warranty

or

guarantyby

Howard

W. Sams

& Co.

,

[nc.

,

as to

the

quality

and suitability

of such

replacement part.

The numbers

oi

these parts

have

been

compiled

from

informatlon

furnished

to

Howard

W. Sams

&

Co.

,

Inc.

,

by the

manulacturere

of

cQ45r

7

/2"

Speed

/

2

hour

the

particular

type of replacement

part

listed.

Repro-

ductlon

or

use,

without express

permission,

of edltorial or

pictorial

content, in

any manner, le

prohlbited.

No

patent

Itability

ie

aseumed

wlth

respect

to the use of the lnforma-

tioncontainedhereln.

@

196I

HowardW.

Same

& Co., Inc.,

3 3,/

4"

Speed

I

hour

This unit

is designed

to operate

on

60

cycles,

lI0-120

volts,

AC

supply

only.

Supplied

By:

Columbia

Phonographs

Dept.

of CBS

Electronics

405 Park

Avenue

New

York

22,

N.

Y.

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Indianapolis

6, Indiana.

0ATE

3

-

0r

Printed in U.S. of

Amerlca

stT 524

FOTDTR

COLUMBIA

DEt

C69O-TR

3

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TOP

V IEW OF MECHAN lSM WITH

DRESS

PLATE

REMOVED

FUNCTION

OF CONTROLS

0n

-Off

Volume

The On-Off

-Volume

control energizes

the

motor

and

amplifier cireuits. The volume controls

the

re-

cording

level

when

the unit is in

the

Record mode.

Function

Selector

This control

selects the

different modes

of

operation.

Turning

this

control

counterclockwise

from

t}te

Stop

position, places

the

unit in

the

Rewind

mode.

Turning this

control clockwise,

plaees

the

unit in

the Play Record mode.

Record

Lock

Depress

theRecord Lockbutton to

place

theunit

in

the Record mode

when the Function Selector is

moved

to

the Play/

Record

position.

Forward Knob

The Forward

knob

winds

thetape onto thetakeup

(right)

reel.

This

is done

by

depressing

the

knob

and

moving the Function

Selector tothe

Play

Record

posi-

tion.

lnstant Stop

Key

The

Instant Stop key allows

t}re operator to stop

the tape

temporarily

so

as

not

to

record

unwanted

portions

such as

commercials,

etc.

Speed

Change

Moving the

speed

change

knob

to the extreme

counterclockwise

position

sets

the

motor

speed for

recording

at1

L/

2 ips.

When the knob is moved

to t}re

extreme

cloekwise

position

the motor

speed

is set for

recording

at

3 3/4 ips.

OPERAT

ING

INSTRUCT

IONS

Threading

The

Tape

l.

Place a

reel

of tape on

supply

(left)

reel stand

(31).

2.

Place an

empty

reel

on takeup

(right)

reel stand

0).

Page

2

3.

Unwind aboutl2"

of

tape

from supply

reel.

HoId

a section

of tape

taut and

lnsert it in the

tape

slot. Make

sure the

dull

coated side of tape

faces the

recording

head.

4.

Insert the free

end of the tape

into

one of

the

radial

slots in

ttre hub

of

the

takeup

reel.

Turn

the reel

several tunrs

counterclockwise

to fasten

the tape

to

the reel

and

to take up

all slack

be-

tween reels.

To Record

From

Microphone

I.

Thread

tape as described

under

"Threading

the

Tape".

2.

Rotate

t}te

On-Off-Volume

control clockwise

to

turn recorder

on. Allow

a

sufficient

time for

tubes

to warm up.

3.

Insert

the

microphone plug

into the

"MIC"

jack.

4.

Set

ttte speed

change

control forthe desired

re-

cording speed.

5.

Hoid Record

Lock

knob down

andmove Function

Selector

toPLay/ Record

position.

6.

HoId

the microphone

about

8 to

12

inches

from

your

mouth

and speak in

a normal voice.

7.

Adjust

the volume

control until

the

record

level

indicator

flashes on

the

loudest

sounds.

NOTE:

Recordingsmaybe

monitored

byplacing

a crystal

earphone in the Monitor

jaek.

IMPORTANT: Correct

volume

levelon

record-

ing

is very important.

Too weak

of a

signalwill resuLt in

weak

playback

andhigh

background noise.

Too strong

of a signal

will

result

in

overloading

and distortion

during

playback.

Recording

Radio

Programs

Radio

programs

may

be

recorded

by

one

of

the

following

methods:

t. ltjc"op,lton"

,Pi"t

"p

t.

Radio

-

in

front

of the radio

speaker.

Turn

the

radio

vol-

ume

control

to

a normal level.

Turn the

radio

tone

controlto

treble

or high. Set the recording

level

and

record

ag under

"To

Record

From

Microphone".

2.

Direct

Connection to Radio

Speaker

-

Usingthe

igator

Clips

across

the

voice coil

terminals

of the radio

speaker.

Insert

the

cable

plug

into the

"Radio-

speaker.

Insert

t}e cable

plug

into

the

"Radio-

Phono"

jack.

Set

the radio

volume

and

tone

controls as described

in

Step l.

Set

the

record-

ing level

and

proceed

as

described

under

"To

Record From

Microphone".

3.

Direct

Connection

toVolume

Controlof Radio

-

uor

clips across

tfie radio

volume

control. Insert

the

cable

plug

into the

"Radio-Phono"

jack.

Set

t}te recording

level

and

proceed

as described

under

"To

Record

From

Microphone".

The

setting

of the

radio

volume

and

tone controls will

have

no

effect on

this setup.

To Record From

Phonograph

A

phone

type

plug

is required

on the

phonograph

pickup

leads.

Insert

this

plug

into

the

"Radio-Phono"

jack

and

proceed

as described

under

"To

Record From

Microphone".

To Record

From a

Television

Receiver

Use one of tfie methods

described

under

"Record-

ing Radio

Programs".

Dual Track

Recording

These recorders

aredesignedto record

andplay

back onone-haUthe width of

the tape at a time, there-

by,

resulting

in two

track recording.

AIter the

re-

cording

is

completed,

and all tape is wound

on the

takeup

(right)

reel, remove

reels

from

recorder.

Turn

the

reels

over

and

place

full reel

onleft

spindle.

Properly

thread

tape and

proceed

with recording.

After the second

track has

been

recorded,

the first

track can

be

played

back

in

the same manner.

Rewind

To

rewlnd

the tape,

turn the Function Selector

knob

to

the Rewind

position.

To

Play

a

Recording

I.

Thread

the

tape as

described

under

"Threading

the

Tape".

2.

TurnFunetion

Selectorknobto

the Play

position.

3.

Adjust

the volume

control to

ttre

desired llsten-

ing level.

To Erase

a

Recording

Any

recording

on

the

tape

is

automatically

erased

before a new

one is

put

on the tape

when

the unit is in

the

Record position.

To

erase

a

recording

without

putting

anytling

ontape,

follow

normal recordingpro-

cedure

butleave microphone

disconnected

and

volume

control at

a minimum.

To Edit And

Splice

Tape

N0TE:

lt is impossible

to edit and

splice

one

track

without

affecting

the

other. Record-

ings

to

be edited

should

be limited

to one

track recordings

only.

Tape

maybe

edited

by cutting outunwanted

por-

tions, or

by

joining

selections

into

another sequence.

Announcements

can

be

inserted

between selections,

etc.

Unused

tape can

be spliced

for reuse.

For

best

results,

cut tape

at a slight diagonal,

buttends

togetherand

fastenon

glossy

sidewith splic-

ing

tape.

Trim off

any excess

width.

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6

Page

3

D ISASSEMBLY

To Remove

Recorder From Case

l. Remove

ease cover.

2.

Remove

scre\ils(2

each)fromeach

side

andrear

of case.

3.

LiJt recorder

up and away from case

far enough

so the speaker

leads can

be

disconnected.

4.

Lift

entire

unit from case.

5.

Reverse

above

procedure

to

reassemble.

To Remove

Amplifier

From

Tape

Transport

l.

Remove

the

hex nut from the On-Off-Volume

controls and

remove

the control.

2.

Remove

the

hex nuts from the Microphone,

CLEAN

ING

Pressure

foller

(21),

capstan shalt

(87),

tape

guides

(44),

erase

head(33), andplay-recordhead

(34)

may accumulate

tape

oxide coating,

worn off the tape

as

it

passes

these

parts.

This accumulation

will

cause

poor performance

and should be

removed with a

soft

Iint-free

cloth

dipped in alcohol.

Radio-Phono, and Monitor

jacks.

Remove

the

jacks.

Remove the record level

and ready lights

from

their

mountings.

Disconnect the motor

leads

from the

power

transformer.

Disconnect the

Record

Playback

and erase head

wires.

Removethethree

screws holding thetape trans-

port

to t}te amplifier chassis

brackets.

Remove the tape transport from the amplifier

chassis.

To reassemble,

reverse

above

procedure.

LUBRICATION

Under

normal operation,

the

mechanism should

be

lubricated

once every three months.

All bearing

surfaces should belubricated with agood

grade

of oil.

Lubricate

the cams and

levers

with

a

non-hardening

grease.

Make

surenooil or

grease

gets

onthe

rubber

surfaces of the

drive

wheels.

3.

4.

5.

6.

7.

8.

The

Play-Record head

(34)

and the erase head

(33)

are aligned at the factory. The heads should not

need

adjustment unless they

are

replaced.

Play-Record

Head

The top edge of the Play-Record head

(34)

must

be

set

evenly with

top edge of tape. Thread tape on

recorder

and

adjust head by moving spring loaded

screws

(36)

up or down

to correct

position.

After ad-

justing

head height, adjust

rear

screws

(36)

so that

head is

perpendicular

to tape.

Erase

Head

The

erase

head

(33)

should be adjusted so that

the

pole piece

covers the top haU of the tape.

The

face

of

the erase head should

be

as nearly

perpendic-

ular to

tape

as

possible

by

visual alignment.

HEAD

ADJUSTMENT

TROUBLE

CHART

Symptom Cause

Remedy

No

record

or

playback.

Defective

motor

(?4).

Defective

idler wheel

(98).

Def

ective

drive idler

wheel

(76).

Broken

spring

(35).

Defective

Play-Record head

(34).

Broken

pressure

roller

spring

(23).

Replace

motor

(?4).

Replace

idler

wheel

(98).

Replace

drive idler wheef

(?6).

Replace spring

(35).

Replace

Play-Record head

(34).

6.

Replace

pressure

roller spring

(23).

l.

2.

3.

4.

5.

l.

2.

3.

4.

5.

6.

No

Rewind.

Page 4

l. Drive belt

(?5)

broken. l.

Replace drive

belt

(75).

TROUBLE

CHART

(CON'T.

)

Symptom

Cause

Remedy

2.

Defective

motor service

pulley

(80).

2. Replace

motor service

pulley

(80).

No

Erase. l.

Defective

Erase head

(33).

l. Replace

Erase head

(33).

Reel

stands

binding.

l. Broken

brake spring

(53)

or

(103).

I.

Replace

brake

spring

(53)

or

(lo3).

No

Takeup. l. Broken spring

(92).

I.

Replace spring

(92).

MECHANICAL

PARTS

LIST

I

2

3

4

5

6

7

8

I

10

lt

L2

t3

t4

15

l6

l?

l8

l9

20

2L

22

23

24

25

26

27

28

29

30

3l

32

33

34

35

36

3?

38

39

40

4L

42

43

44

45

46

47

48

49

50

5l

52

53

690-1

690-2

690-3

690-4

690-5

690-6

690-7

690-8

690-9

690-10

690-11

690-12

690-13

690-14

690-r5

690-16

690-r7

690-18

690-r9

690-20

690-21

690-22

690-23

690-24

690-25

690-26

690-27

690-28

690-29

690-30

690-31

690-32

690-33

690-34

690-35

690-36

690-37

690-38

690-39

690-40

690-41

690-42

690-43

690-44

690-45

690-46

690-47

690-48

690-49

690-50

690-51

690-52

690-53

Takeup Reel Stand

Set Screw

Screw

Head

Cover

Set Screw

Speed Change Knob

Function

Control Knob

Screw

Instant

Stop

Tab

Escutcheon

Screw

Dress

Plate

Forward Knob

Spring Plate

Screw

Tape

Pad

Bracket

"Ct'Washer

Fibre

Washer

Felt

Washer

Pressure Roller

Washer

Pressure Roller

Spring

Screw

Pressure Roller

Bracket

Instant

Stop

Bracket

Screw

Plate

Hex Nut

Bushing

Supply Reel

Stand

Volume

Control Knob

Erase Head

PIay-Record

Head

Spring

Head Adjustment

Screw

Head Mounting

Plate

Screw

Spring

Hex

Nut

Erase

Head

Bracket

Screw

Hex

Nut

Tape

Guide

ttCttWasher

Fibre

Washer

Upper

Clutch

Felt Washer

Felt

Washer

Lower

Clutch

Tension

Roller

Tension Roller Lever

Spring

54

55

56

57

58

59

60

6r

62

63

64

65

66

6?

68

69

?0

7r

72

?3

74

?5

?6

77

78

79

80

8l

82

83

84

85

86

87

88

89

90

9r

92

93

94

95

96

97

98

99

r00

l0l

r02

r03

r04

r05

106

690 -54

690-55

690

-56

690-57

690

-5

I

690-59

690-60

690

-6t

690

-62

690 -63

690

-64

690

-65

690

-66

690-67

690-68

690-69

690-70

690-?l

690-72

690-?3

690-74

69S 75

690 -?6

690-77

690-?8

690

-?

I

690

-80

690

-81

690

-82

690-83

690

-84

690

-8

5

690-86

690-87

690-88

690-89

690-90

690-91

690-92

690-93

690

-94

690

-9

5

690-96

690

-9

?

690

-9

I

690-99

690-100

690-r0l

690

-102

690

-r03

690-104

690-105

690-106

Bushing

Spring

Lock

Bracket

Rod

Spring

Tension

Bracket

Slide

Bracket

Function

Cam

Spring

Record

Control

Bracket

Function

Cam

Lever

Base Plate

Speed

Change Shaft

Speed

Change

Lever

Case Mounting

Bracket

Motor

Board Mount Sleeve

Grommet

Motor

Board

Motor Mount

Sleeve

Motor

Drive

Belt

Drive

Idler

Wheel

Drive

Pulley

Revdnd

Actuating Lever

Drive

Idler

Wheel Bracket

Motor Service

Pulley

Idler Wheel Bracket

Drive Lever

Spring

Bracket

Idler

Tension

Bracket

Capstan Sha{t

Right

Brake Shoe

Bracket

Spring

Flywheel

Spring

Speed

Change Tension Spring

Spring

Cap

Bolt

Supply Spindle Pulley

Assembly

Idler Wheel

Hex Nut

Mounting Plate

Main

Control Lever

Left

Brake Shoe Bracket

Spring

Record

Knob

Record

Cam

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PAGE

6

Columbia C690-TR User manual

Columbia C690-TR User manual

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