CONCORD 107 User manual

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GENERAL INFORMATION
Concord Model l0? is a two-speed, dual-track tape recorder. The functions of opera-
tion are controlled by one knob. A record safety lock is provided to prevent acciiental
erasure.
Recordings can be made from a radio, TV, phonograph or direcuy from a microphone.
The two tape speeds arc 3 3/ 4 ips and 7 L/ 2 lps.
connect recorder to an ouuet supplytng ll0 - lz0 volts, 60 cycle, AC supply only.
Supplied By:
Concord Electron ics Corp.
809 North Cahuenga Boulevard
Los Angeles 38, California
l"i
HOWARD W. SAts a
The listing of any avallable replacement part hereln does
not constltute ln any caae a recommendatton, warranty or
guerurtyby Howard Sr. Same & Co., Inc., aE to the quiltty
and suttabtllty of euch replacement part. The numberg oi
these parte heve been compited from lntormatlon furnlehed
to Horard W. Samg & Co., Inc., by the manufacturera of
cQ500
(E |o.r I t (C. lndlanaplotts 6, tndtana
the particular type of replacement part listed. Repro-
ductlon or uee, without expreas permlseion, of edltortil or
pictorial content, ln any manner, la prohlbited. No patent
Itability ig assumed vlth respect to the uge of the tnforme-
tion contalned hereln. G) 1962 Howard W. Sams & Co. , Inc. ,
Indianapolie 6, Indiana. Printed ln U.S. of Amerlca
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Function
Turning the control to the left from Stop posi-
tion rewinds the tape onto the supply reel at a rapid
speed.
Turning the control to the right from Stop posi-
tion winds tape from the supply reel to the take-up
reel.
Record Safety Lock
Pulling lock toward the front of the recorder,
with the Frurction Control in the Forward position,
places the unit in the Record mode of operation.
Mic I n put
Plug the microphone into this jack to make a
recording.
Earphone Jack
Pltrg theearphone into thisjack to monitorwhile
recording. It may be used for private listening dtring
playback.
O PERAT I NG
Threading the Tape
l. Place an empty reel on the take-up (right) spin-
dle.
2. Place a reel of tape on the supply (left) spindle.
3. Unwlnd 14" of tape from the supply reel, hold a
section taut and insert it into the tape slot.
4. Insert tlre free end into one of the slots ln the
take-up reel.
5. Turn the take-upreel a few turns counterclock-
nrise to secure the tapeto thereel and to take up
all slack between reels.
Microphone Recording
1. Thread the tape.
2. Insert the microphone plug into the Mic Input
Jack.
Turn the On-Off switch to On.
Turn the Speed Selector to the desired speed.
5. Turn the Function Cohtrol to Forward-
6. Pull the Record Safety Lock toward the front of
the recorder.
1. Hold the microphone 6 to 12 inches from your
mouth, speak in a normal manner, and adjust
the Volume Control until the two halves of the
magic eye are just closed on the loudest pas-
age.
Recording f rom a Radio or TV
l. Thread the tape.
PAGE 2
FUNCTION OF CONTROLS AND JACKS
Output Jack
This jack may be used to ptay a recording
through an external speaker.
Fast Forward
With the Function Control in the Forward posi-
tion, pull the Fast Forward Lever toward the front of
the recorder. Tape will advance to a desired spot at
a rapid speed. To stop the forward motion of the tape,
return the Function Control to Stop position.
Remote Control Switch Socket
The Remote Control Sudtch plqs into this soeket
and the operator can control the tape motion in play
or Record mode.
Speed Selector
Selects deslred speed, either g g/ 4 or 7 L/ 2 ips.
Turn clockwise and push down for T I/ 2 ips. T\rrn
counterclockwise and lift for 3 3rl4 ips.
I NSTRUCTI ONS
2. Insert the Radio-TV-Phono patch cord plug into
the "Aux" Input jack.
3. Connect the other end of the patch cord across
the speaker voice coil.
4. T\rrn the Speed Selector to the desired speed.
5. Turn the On-Off switch to Or.
6. Turn the Function Control to Forward.
7. Pull the Record Safety Lock toward the front of
the recorder.
8. Adjust the volume control until the loudest pas-
sage just closes the twohalves of themagic eye.
Recording from a Phonograph
1. Thread the tape.
2. Insert the Radio-TV-phono patch cord plug into
the I'Aux" Input iack.
3. Connect the other end of the patch cord to pick-
up leads of the phonograph.
4. Turn Speed Selector to the deslred speed.
5. Turn the On-Off switch to On.
6. Turn the Function Control to Forward.
7. Pull the Record Safety lock toward the front of
the recorder.
8. Adjust the Volume Control turtil the two halves
of the magic eye iust close on the loudest pas-
sage.
3.
4.

FIG. I TOPVIEW OF MECHANISM WITI{COVERS RFJI/IOVED ( ITEMS I-48}
Playbaclr
l. Thread the tape.
2. Turn the recorder on.
3. Select the correct speed.
4. Turn the Function Control to Forward.
5. A$ust the volume to a desired level.
Rewind
Turn the Function Control to Rewind when a de-
sired section of the tape is to be played back or to
rewind the tape from the take-up reel onto the supply
reel.
Fast Forward
Turn the Function Control to Forward and then
pull the Fast Forward lever toward the front of the
recorderwhen it isdesired to skip several
to a certain section.
External Speaker
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Connect an external speaker to one end of the;!
patch cord and plug the other into the Output jack when !l
it is desirable to play back a recording through an \
external speaker instead of the self-contained speaker
of the recorder.
Earphone
The earphone may be plugged into the earphone
iack to monitor a recording being made, or to listen
to prerecorded tapes.
Remote Control
The recorder can be used for dlctatlon or play
back when the Remote Control switch is plugged into
the Remote Control switch socket.
DISASSEMBLY
Removing the Top Panel
t. Remove all control knobs.
2. Remove the head cover.
3. Remove the two tape guldes .
4. Remove two screws located at the reel pan
bases.
Lift the panel off.
Reverse the foregoing procedure to reassemble.
Removing the Recorder f rom the Cabinet
l. Remove the top panel.
2. Remove three screws from bottom of cabinet.
3. Remove two screws from rear of cabinet.
4. Lift the recorder up and unplug the speaker.
5. Lift the recorder the rest of the way out of the
cablnet.
6. Reverse theforegoing proeedure to reassemble.
5.
6.
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ldler Wheel ( 33)
When the idler wheel (33) is in the Rewind or
Stop position, the distance from the idler wheel to the
larger dlameter of the motor pulley is 5/ 32 ". To
obtain this dlstance, adjust the two screws on selector
lever (21). The tenslon on idler spring (34), measured
by a spring scale connected to the center shaft of the
idler wheel (33), is I lb. + 0.7 oz. at 3 3/4 ips and
1 lb. ? oz. at 7 l/ 2 ips.
ldler Wheel l42l t
The distance between idler wheel (42) and motor
pulley fs 3/16" and between idler wheel (42) take-up
reel hub is 5/64" when the idler wheel (a2) is in its
disengaged position. Toobtain these distances, adjust
the two screws on the fast forward arm (45). The
tension on idler spring (37), measured by a sprlng
scale connected to the shaft of the idler wheel, is
L2.7 oz. + 0.7 oz.
Record-Playback Head
l. Thread an alignment tape on the recorder.
2. Adiust the mounting while playing back at any
frequency above ?000 cps until the maximuln
output is obtained.
Record Bias
Set Selector Srvitch to Record position. Connect
VTVM across Record play head. Adjust Cl3 for a
meter reading between -44 and -55 volts.
Record Level
krject 1000 cycle at . 98 -1.55 miltivolts to the
Mie. input jack. Set Selector Switch to Record. Ad-
justR3 until record level indicator shadows just close.
A DJ U STMENTS
CLEAN ING
LUBRI CATION
TROU BLE CHART
Record head (9), erase head (t2), pressure rol-
ler (6), tape guides (8) and (13) and capstan are sub-
iect to tape residue as it passes these parts. Clean
these parts with a soft cloth and alcohol.
Clean all idler wheels or any rotating part that
contacts the idler wheels with alcohol.
Lubricate the following parts as follows with a
good light weight oil.
I. Flywheel (46) - 5 drops every 300 hours through
hole at the bottom of capstan.
2. Idler Wheels (29), (33), and (42) - 2 drops to
shaft and I drop to bearlng.
3. Pressure Roller (6) - 2 drops to shaft andl drop
to bearing"
4. Rewind Pulley(30) - 2 drops to shaftand I drop
to bearing.
5. Reel Hubs (2'll - 2 drops to shaft and 2 drops to
bearing.
6. Friction Roller (59) - I drop to bearing.
7. Selector Cam - I droP to bearing.
Sym ptom Cause Remedy
Capstan does not ro-
tate. Defective motor (35).
Capstan idler wheel (33), motor pulley,
or flywheel (46) oify.
Idler wheel tension spring (34) defec-
tive.
Idler wheel (33) and fl.ytiheel (aG) in-
sufficiently lubrica'rci cttusing them to
bind"
Capstan screw hr',
Motor pulley loosv"
Replace motor (35).
fi.|*an with alcohol.
Fi,eplace.
ilIean the spindle bearing and
Lubricate.
Tighten capstan scre\p.
Tighten set screw.
l.
2.
3.
t.
2.
3.
4.
5.
6. 5.
fl
Tape speed too fast. l. Pressure roller tens'nn spring defet:'
tive. 13 If broken, replace. If insuffi-
cient tenslon, shorten.
Weak output; 1.
2. Misaligned record-play head (19). Loose pressure pad retalning serrrw.
Pressure pad worn and doesnrt contact
the head.
Record-play head (9) defecttve.
Magnetized record-play head (9).
l. See "Adjustfirenis. "
2. Align the Frc-sure pad so it is
parallel with the headand tighten
the retainlng screw.
3. Replace pressure pdd"
4. Replace record-play head (9).
5. Demagnetiz-:, the head.
3.
4.
5.
PAGE 4

FIG. 2 TOP VIEW OF MECHANISM WITH COVERS REMOVED ( ITEMS 49-611
TROU BLE CHART ( CON'T. I
Sym ptom Cause Remedy
Poor rewind. 1.
2.
3.
4.
Rewind idler wheels (29) worn.
Rewind idlerwheel tension spring weak
or broken.
Drtving surfaces oily.
ReeI hub, shaft bearing, and idler
wheels (29) insufficiently lubricated.
Replace.
ff weak, shortenl if broken, r€-
place.
Clean with alcohol.
Clean and lubricate.
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2.
3.
4.
Faulty brake. I.
2.
t.
2. Tension spring (22) loose or broken. Oily parts. Shorten or replace.
Clean with alcohol.
No takeup. l.
2.
3.
Rotating parts binding.
Idler wheel (42), motor pulley, and
friction roller olly.
Reel does not rotate.
Clean and lubricate.
Clean udth alcohol.
Replace the felt on the bottom of
the reel hub.
t.
2.
3.
No fast d. Idler wheel (42) does not contact the
motor pulley.
Idler wheel (42) or reel hub (38) bind-
ing due to lack of lubrication.
Adiust the fast forward adjusting
cam (45) to leave the idler wheel
advance farther.
Remove, clean, and lubricate. 2.
2.
Speed too slow. t.
2.
Motor pulley, idler wheels (42), or fly-
wheel (46) sfipping.
Too much tension on ldler wheel ten-
sion spring (37) or pressure roller
tension spring.
Clean with aleohol.
Lengthen the spring.
l.
2.
Wow or flutter.
PAGE 5
l. Motor defective.
2. Oily rotating parts.
3. Defectlve pressure roller (6).
4. Take-up idler wheel (42) defective.
5. Defectlve flywheel bearing.
6. Lack of lubrication on rotating parts.
7. Capstan hotding screw ( 62) Ioose.
l. Replace.
2. Clean with alcohol.
3. Repl,ace pressure roller (6).
4. Replace take-up idler wtreel (42).
5. Replace bearing.
6. Lubricate rotating parts.
7. Tighten holding screw ( 62 ).
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MECHAN ICAL PARTS LIST
Ref. Part
No. No.
I
2
3
4
5
6
7
8
I
l0
tl
L2
13
l4
l5
i6
L7
18
l9
20
2L
22
23
24
25
26
27
28
29
30
31
32
A-65327
A-65318
A-?0r29A
A-67656
A -65351
A-48103
A-64950
A-46030
A -85153
A-70071-B
A-46028
A-6?680
A-65347
A-65328
A-6534
A-?0125
A-70122
A -65345
A -65330
A-65353
A-?0127-C
A-65454
A -65350
A-83068
A-48099
A-67661
A-48098
A -65320
A-65323
Lever A, Fast Forward
Lever B, Fast Forward
Spring, Fast Forward
Arm, Pressure Roller
Board, Head Retaining
Fressure Roller
Retaining Ring, E4
Tape Guide
Record-Play Head
Pad, Felt
Pad Spring
Erase Head
Tape Guide - C
Stop Lever
Selector Shaft Holder
Arm, Record Switch
Idler Spring - A
Spring, Pressure Roller
Interlocking Arm
Selector Lever - A
Selector Lever - B
Spring - M, Rewind Brake
Spring, Slide Supporter
Slide Supporter
Lever, Rewind Brake
Rubber Brake
Reel Hub
Screw, Reel
Drive Pulley, Rewind
"E" Ring, VB20I
Lever, Idler
Guide, Speed Change
33
34
35
36
3?
38
39
40
4L
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
6r
62
63
A-48104
A-70125
A-48114
A-653r9
A-700?7-A
A-85534
A-65445
A-?0126-C
A-65354
A-48104
A-65317
A-65324
A-65344
A-48097
A-65326
A-65325
A-653r9
A-64952-A
A-85153
A.64953
A-85476
A-85473
A-6?6?l
A-48100
A-48102
A-67662
A-85476
Idler Wheel
Spring - A, Idler
Motor
Pulley Arm, Rewind
Spring, Switch Lever
Leather Brake
Brake Lever with Leaf Spring
Spring-M, Take-up Brake Lever
Slide, Selector
Idler Wheel (2)
Lever, Rewind
Arm - B, Fast Forward
Arm - A, Fast Forward
Flywheel
Adjusting Cam, Fast Forward
Spring, Fast Forward Lever-A
Oil Cap
Board A, Head Retaining
Retainer A-K, Pressure Pad
Felt Pad
Arm B, Pressure Pad
Screw, 3Xl2
Felt, Mounting Panel
Screw, BC-2006
Felt, Function
Shaft, Speed Change
Roller, Friction
Serew, BC-2006
Capstan, 60 Cycle
Retaining Screw, Capstan
Felt, Mounting Plate
BOTTOM VIEW OF COMPLETE UNIT BOTTOM VIEW OF POWER SUPPLY
PAGE 6