Columbia C690-TR Schematic

r-

i

I

I

I

I

I

cc,

G-f
rrtN
a

et

-l

rv?

rr:t

l­l*l

COLUMBIA

DEt

C69O-TR

ffi

::l

tl:i

i.ji,

s3

!no

33

J

8E

$

o

=

3

o

E8

.F

s5

€tE

9>-

7t

play

and record

-

those

_

playing

The

Columbia

Recordings

made

direcily

The

two

times

are as follows:

Reel

Size

(600

5"

ft.

This unit

Model

monaurally,

may

be made from

from

tape

speeds

)

is designed

GENERAL

C690-TR

two

tracks

the microphone.

are 7 L/2

to operate

INFORMATION

tape recorder

on standard

phonograph,

a

and

3

3/4 ips.

4"

3 3,/

Speed

I

hour

on

60

cycles,

is

a two-speed

width recoiding

radio,

or

television

Using both

lI0-120

volts,

tape

tape.

tracks,

supply

AC

recorder

receiver

the recording

7

Speed

/2"

2

hour

/

only.

designed

as

well

to

as

and

H('WARD

The

lieting

not

conetitute

guarantyby
and suitability
these parts

to

cQ45r

Howard

Howard

have

W. Sams

of

any

available replacement

in

any case

W. Sams

of such

replacement part.

been

compiled

&

Co.

W.

SAIUIS

recommendation,

a

& Co.

[nc.

,

from

informatlon

Inc.

by the

,

,

Columbia

Dept.

part

herein does

warranty

as to

,

The numbers

manulacturere

quality

the

furnished

Supplied

of CBS

405 Park

New

York

&

or

oi

of

By:

Phonographs

Electronics

Avenue

22,

N.

(o.r

G

the

ductlon

pictorial
Itability

tioncontainedhereln.

Indianapolis

0ATE

Y.

(C.

I N

particular

or

lndlanapotts

type of replacement

use,

without express

content, in

ie

aseumed

3

6, Indiana.

0r

-

any manner, le

wlth

@

Gi,

part

permission,

respect

196I

prohlbited.

to the use of the lnforma-

HowardW.

Printed in U.S. of

lndlana

listed.

of edltorial or

Same

& Co., Inc.,

stT 524

Repro-

patent

No

Amerlca

FOTDTR

q
lTt

-l

CJI

N'

+r

+l

et

|-

E
rrt

-t
6

TOP

V IEW OF MECHAN lSM WITH

DRESS

PLATE

REMOVED

-Off

0n

and

cording

Function

operation.

from

mode.

unit in

Record

in

moved

Threading

Volume

The On-Off

-Volume

control energizes

amplifier cireuits. The volume controls

level

Selector

This control

Stop

t}te

Turning this

the Play Record mode.

Lock

Depress

the Record mode

to

the Play/

The

Place a

l.

(31).

Place an

2.

0).

the unit is in

when

selects the

Turning

this

position, places

the

different modes

control

the

control clockwise,

theRecord Lockbutton to

when the Function Selector is

reel

position.

supply

on takeup

Tape

reel

empty

Record

of tape on

unit in

FUNCTION

motor

the

re-

the

plaees

place

OPERAT

reel stand

reel stand

the

Rewind

the

theunit

Record mode.

counterclockwise

(left)

(right)

OF CONTROLS

of

ING

INSTRUCT

Forward Knob

The Forward

(right)

moving the Function

tion.

lnstant Stop

the tape

portions

Speed

counterclockwise
recording
extreme
recording

reel.

This

Key

The

Instant Stop key allows

temporarily

such as

Change

Moving the

at1

cloekwise

3 3/4 ips.

at

IONS

Unwind aboutl2"

3.

a section

commercials,

speed

position

L/

2 ips.

of tape

slot. Make

faces the

Insert the free

4.

recording

knob

winds

is done

Selector tothe

so

When the knob is moved

position

of

sure the

end of the tape

thetape onto thetakeup

depressing

by

as

change

sets

the motor

tape

taut and

head.

Play

t}re operator to stop

not

record

to

etc.

knob

motor

the

from supply

lnsert it in the

dull

coated side of tape

knob

the

Record

and

posi-

unwanted

to the extreme

speed for

to t}re

is set for

speed

reel.

HoId

tape

into

one of

the

Page

2

radial

the reel

the tape
tween reels.

To Record

slots in

several tunrs

the reel

to

From

Microphone

ttre hub

and

the

of

counterclockwise

takeup

to take up

reel.

all slack

Turn

to fasten

be-

To Record From

phone

A

pickup
jack

Microphone".

leads.

and

type

Insert

proceed

Phonograph

plug

is required

plug

this

as described

into

under

phonograph

on the

the

"Radio-Phono"

Record From

"To

I.

2.

Thread
Tape".

Rotate

tape as described

t}te

On-Off-Volume

turn recorder

tubes

to warm up.

Insert

3.

Set

4.

cording speed.

Hoid Record

5.

Selector

HoId

6.

your

7.

Adjust
indicator

NOTE:

IMPORTANT: Correct

Recordingsmaybe

a crystal

ing

microphone plug

the

ttte speed

the microphone

mouth

change

Lock

toPLay/ Record

and speak in

the volume

flashes on

earphone in the Monitor

is very important.

signalwill resuLt in

background noise.

result

will

during

Recording

Radio

following

methods:

t. ltjc"op,lton"

front

ume

control

tone

controlto

level

Microphone".

Direct

2.

across
speaker.
speaker.

Phono"

controls as described

ing level

Record From

Direct

3.

in

playback.

Programs

Radio

programs

,Pi"t

of the radio

to

record

and

Connection to Radio

the

voice coil

Insert
Insert

jack.

proceed

and

Microphone".

Connection

uor

clips across

the

cable

t}te recording

under

setting
have

no

plug

Record

"To

radio

of the

effect on

tfie radio

into the

under

control clockwise

on. Allow

control forthe desired

knob down

sufficient

a

into the

andmove Function

position.

about

8 to

a normal voice.

control until

loudest

the

monitored

volume

levelon

Too weak

playback

weak

Too strong

overloading

may

"p

speaker.

a normal level.

treble

ag under

and distortion

recorded

be

t.

Turn

or high. Set the recording

"To

Speaker

terminals

the

t}e cable

Set

the radio

toVolume

level

volume

plug

cable

in

as

plug

volume

Step l.

described

into the
into

Controlof Radio

volume

"Radio-Phono"

proceed

and

From

Microphone".

and

tone controls will

this setup.

"Threading

the

time for

"MIC"

jack.

re-

12

inches

record

the

sounds.

byplacing

jaek.

from

level

record-

of a

andhigh

of a signal

one

by

of

the

Radio

radio

the

Turn the

Record

-

igator

of the radio

the

Set

the

control. Insert

as described

radio

From

Usingthe

Clips

"Radio­"Radio-

and

record-

under

jack.

vol-

tone

"To

Set

The

To Record

to

ing Radio

Dual Track

back onone-haUthe width of

by,

cording

takeup

Turn

Properly

After the second

track can

Rewind

knob

Play

To

I.

From a

Use one of tfie methods

Programs".

These recorders

resulting

is

(right)

reels

the

thread

Television

Recording

in two

track recording.

completed,

reel, remove

over

and

tape and
track has

played

be

rewlnd

To

the Rewind

to

a

Recording

Thread

Tape".

the

the tape,

the

tape as

back

position.

Receiver

described

aredesignedto record

the tape at a time, there-

under

AIter the

and all tape is wound

reels

place

full reel

proceed

been

in

the same manner.

from

onleft

with recording.

recorded,

turn the Function Selector

described

under

"Threading

"Record-

andplay

re-

on the

recorder.

spindle.

the first

=o

TurnFunetion

2.

Adjust

3.

To Erase

Any

-

in

-

before a new

Record position.

the

putting

cedure

control at

To Edit And

N0TE:

track

ings

track recordings

Tape

tions, or

Announcements

etc.

Unused

For

buttends
ing

tape.

the volume

ing level.

a

Recording

recording

one is

anytling

butleave microphone

a minimum.

Splice

lt is impossible

without

to

be edited

maybe

joining

by

tape can

best

togetherand

Trim off

Selectorknobto

on

the

put

on the tape

To

ontape,

Tape

affecting

should

only.

edited

selections

can

inserted

be

be spliced

results,

fastenon

any excess

the Play

control to

is

tape

desired llsten-

ttre

automatically

when

the unit is in

erase a recording

follow

normal recordingpro-

disconnected

to edit and

the

other. Record-

be limited

by cutting outunwanted

into

another sequence.

between selections,

and

splice

to one

one

for reuse.

cut tape

at a slight diagonal,

glossy

sidewith splic-

width.

position.

erased

without

volume

por-

EP

e=

€E

gt

{

F

o

g
lrt

v

6

Page

3