SilverStone 1232 User manual

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SILVERTONE MODEIS t232, l2g4
(cH. 528.58t 40, 528.59720^, 528.59890)
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GENIRAL INFORMATION
Model 1232 consists of a 2-speed tape deck 528.58140and amplifier 528.59?20 to produce
or play back quarter-or-half-track monaural recordings. A stereo preamplifier is included
and when connected to an external amplifier, prerecorded quarter-or-hal.f-track stereo tapes
may be played back.
Model 1234 consists of a 2-speed tape deck 528. 58140, amplifiers 528. 59?20 and 528. 59890
toproduce and play back quarter-or-half-track monaural recordings and playback prerecorded
quarter-or-half -track stereo tapes.
Monaural recordings can be made from a radio, phonograph, or T. V. in addition to
those made directly f rom the microphone.
The two tape speeds are 3 3/ 4 and 7 l/2 ips. The recording time for each track is as
follows:
Reel Size
5" (600 ft. )
5" (900 ft. )
7" (1200 ft. )
?" (1800 ft. )
This recorder is to be connected
3 3/4 ips
l,/ 2 hour
3/4 hour
I hour
I lrl 2 hours
Sears, Roebuck and Company
925 S. Homan Avenue
Chicago, lllinois
7L/2ips
l/ 4 hour
23 min.
l/ 2 hour
3/4 hour
to an ouilet supplying ll0-I20 volts, 60 cycles AC only.
Supplied By:
FtowARD W. SAtnS &
The lieting of any available replacement part herein does
not constitute in any case a recommendation, warranty or
guarantyby Howard W. Sams & Co., Inc., as to the quality
and guitability of such replacement part. The numbers of
these parts have been compiled from information furnished
to Hovard W, Sams & Co., Inc. , by the manufacturers of
cQ45?
G (o.r I f, lC. lndianapolls 6, lndlana
the particular type of replacement part listed. Repro-
ductlon or use, without express permission, of editorial or
pictorial content, in any manner, le prohibited. No patent
liability is assumed wlth reepect to the use of the informa-
tioncontainedherein. @ tSOt HovardW. Sams & Co., Inc.,
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Indianapolis 6, Indiana.
oATE 3 - 6l
Printed in U.S. of Amerlca
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FIG.I TOP VIEW OF MTCHANISM WITH COVTRS REMOVt.D
FUNCTION OF CONTROLS AND JACKS
on/ott Function Track Selector
Turning this control clockwise turns the re- This is a three-position switch which selects
corderonandplaeestheamplifierintheplayposition. theportionof the tapewhich monaural soundwill be
When used in conjunction withthe Record Lock, the recorded onror on which prerecorded monaural or
amplifier is placed in the record position.
Record Lock
To place the amplilier in the record position,
lift the Record Lock and simultaneously turn the On/Off Speed
Function control fully clockwise.
Tone
stereo sound will be played back. Positions 'AlBl"
and "42E}2" are for monaural record or playback;
'Etereo" isfor playing back prerecordedtwo-or four-
track stereo tape.
Raise knob to the Up position for 3 3/ 4 ips and
to the Down position for 7 L/ 2 ips.
This control regulates the tonal response ":l: CAUTI0N: Do not operate the speed contror
main and stereo channels during playback only. Turn-
ing the control clockwise emphasizes the trigh noi;s wless the motor is running'
and counterclockwise emphasizes the low notes. RUn
Main Volume When this control is depressed, the tape is
The inner knob regulates thevolume level of the started in motion for record or playback'
main unit for recording and playback. Turning the etnn
controlclockwise increases the volume and counter- i'rvP
clockwise decreases the volume' This control stops the tape movement and re-
StgfgO VOlUmg leases the Rtut control when depressed.
The outer knob of the two volume controls res- IMPORTANT: Always depress the Stop control
urates the volume of the stereo channel for rt"iEo when going f rom one mode of operation to
playback only. Turning the knob clockwise in""""""" another'
the volume; counterclockwise decreases the volume.
Page 2

Fast Foruard
The tape will advance at a rapid speed to the
desired spot on the tape when this control is depressed.
Fast Ra{ind
The tape will rewind at a rapid speed when this
control is depressed.
Mike
When recording with a microphone, this input
is used.
Radio-P hono
This input is used when recording directly from
a radio, phonograph, or television receiver.
OPERATING
Threading the Tape
l. Depress the Stop control.
2. Place a reel of tape on the right-hand (supply)
spindle (76).
3. Place an empty reel on the left-hand (take-up)
spindre (?6).
4. Rotate both reels until they are seated over the
spindLe key.
5. Unwind approximately12 inches of tape from the
right-hand reel and insert it into the tape slot.
Make sure the dull-coated side faces the rear of
the recorder.
6. Insert thefree end ofthe tape into the slotof the
left-hand reel. Turn tfie reel several turns to
secure the tape to the reel and to take all slack
up between reels.
Microphone Recording - Half-Track
l. Plug the microphone into the "Mike" jack.
2. Turn theFunction control to the "Play" position
and then pull the Record Lock Button up and si-
multaneously turn the Function control to tJre
right until a cliek is heardl then release both
controls.
3. Set the Main Volume control so the Record
Indicator flashes on the Ioudest passages.
4. Set the Speed control for the desired speed. Up
f.or 3 3/ 4 ips and Down for 7 L/ 2 ips.
5. Set the Track Selector to AlBl position.
6. Hold the microphone 12 to l8 inches from your
mouth and speak in a normal manner to setthe
Recording Level Indicator for correct volume.
7. Depress the Run control.
External Speaker
This input is used for connecting an external
amplifier orspeaker to the record, or headphones for
monitoring recordings that are being made.
Stereo 0utput
This output isfor connecting an external ampli-
fier speaker unit tothe recorder for the second chan-
nel for playback of stereo tapes.
t
Push 0ff/0n Switch
Depressing this button turns the External Am-
plifier-Speaker unit on and off.
Recording Level I ndicator
This indicates the correct level to set the vol-
ume control during a recording. It should be set so
it flashes occasionally on the loudest passages.
INSTRUCTIONS A
I
Microphone Recording-Quarter-Track ; p
Nt '/
l. Usesame procedure asfor Microphone necord- p i
ing ; 11"11 Track with the following addition. S I
2. After a reel ol tape has been recordea, ""ou""" E !
the reels, rethreid the tape and record another O f
track. At end of reel, turn reel over, rethread ;- -
thetape, setTrack Seiectorto A2B2position and $ 3
follow the preceding procedure. O O
[n tr
Pickup from a Phonograph, Radio or Television S H
1. Through a Direct Connection to the Volume p 1i
eoninn ;- d
ffi6i-and plug the other end into the "Radio- Xj \)
Phono" jack of the recorder. To record, use O -
the same procedure as in 'Microphone Record- irt 115
ins". I S
2. Through a Direct Connection to the Speaker. - !
it iT
from which the reeording is being made. Insert
tlte plug into the "Radio-Phono" iack. Set the
volume and tone controls of the sound source to
the desired listening level. To record, use the
same procedure as in 'Microphone Recording".
Pickup from the Microphone through the Loudspeaker
l. Place the microphone about 6 to 12 inches in
front of the loudspeaker.
2. Adjust thevolume control ofthe sound source to
a desired listening level.
3. Set the tone control to treble or high.
4. Set the recording level and record as under
"Microphone Recording Half-Traek or Quarter-
Track".
Monaural Playback - Half -Track
l. Thread tape as under "Threading the Tape"
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Page 3

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FIG.2 BOTTOM VIEW OF MECHANISM
Turn the Function Selector to Play position.
Adjust the Main Volume to desired level.
Set speed control in Up position for 3 3/ 4 ips
or Down for 7 L/ 2 ips depending on the speed
the recording was made.
Set Track Selector in AlBl position.
Depress the Run key.
After all tape is wound onto the takeup reel,
remove the takeup reel, turn it over and place
on supply spindle. Rethread the tape and follow
the above procedure to play the second track.
Monaural Playback - Quarter-Track
l. Thread tape as under "Threading the Tape".
2. Turn the Function Selector to Play position.
3. Adjust Main Volume to desired level.
4. Set speed eontrol in Up position f.or3 3/ 4 ipsor
Down for 7 L/ 2 ips depending on the speed the
reeording was made.
5. Set Track Selector in AIBI position.
6. Depress the Run key.
7. After all tape is wound onto the takeup reel,
remove the takeup reel, turn it over and place
on supply spindle. Rethread the tape and follow
the above procedure forplaying the secondtrack.
Page 4
8. After all the tape is wound onto the takeup reel,
remove the takeup reel and place it on the supply
spindle, set Track Selector to A2B2 position.
Thread the tape and follow the above procedure
for playing tracks three and four but leave the
Track Selector in the AZB2 position.
Stereo Playback - Two-Track
l. Turn Function Selector to Play position.
2. Turn Main Volume to desired listening level.
3. Turn Stereo Volume to desired listening level.
4. Set Speed Selector to the speed at which the re-
cording was made.
Set Track Selector to Stereo.
Connect theStereo Speaker System tothe Stereo
Output socket on the tape recorder.
Depress the Run key.
Turn Tone control to the right for treble and to
left for bass.
Stereo Playback - Four-Track
Use same procedure usedin "Stereo Playback-
Two-Track" with the following addition.
I" When all the tape is wound onto the takeup reel,
remove the reel, turn it over, and place it on
the supply spindle" Thread the tapeand proceed
as outlined in 'Stereo Playback - HaU-Track".
2.
3.
4.
5.
6.
ry
5.
6.
7.
8.

Fast Rewind
Torewind the tape atend of reel or to a desired
section, depress the Fast Rewind key and hold until the
desired section is reached and then release.
Fast Forward
To advance the tape at a rapid speed, depress
the Fast Forward key and hold until the desired section
is reached and then release.
To Erase a Recording
In record position, any recording on the tape is
automatically erased before anew recording is made.
Should it be desired to erase a recording without re-
cording new material, follow the normal recording
procedure but set the volume control to the full counter-
clockwise position.
To Edit and Splice Tape
N0TE: It is impossible to edit and splice one
track of a two-track tape without affecting
the other. Recordings to be edited should
be limited to one-track tapes.
I. Tape may be edited by cutting out unwanted
portions, or by joining selections into another
sequence. Announcements ean be inserted be-
tweenselections, etc. Unusedtapecanbespliced
for reuse.
2. For best results, cut tape at a slight diagonal,
butt ends together and fasten on the glossy side
with splicing tape. Trim off any excessive
width.
To Remove Recorder from the Case
l. Remove aII control knobs.
2. Remove mechanism cover (4).
3. Remove head cover (13).
4. Remove four screws from top pfate (5) and lift
top plate off.
5. Remove two screws from the amplifier control
excutcheon and remove the escutcheon.
6. Remove t\ro screws lrom the speaker grill and
remove it.
?. Remove two screws on the bottom of the ease
and two screws from the front of the case.
Lift the recorder from the case.
To reassemble, reverse the foregoing proced-
ure.
To Remove Arnplifier f rom Tape Transport
l. Unplug all connecting leads.
2. Remove two screws on each side of recorder.
3. LiJt tape transport up and away from the am-
plifier.
4, To reassemble, reverse the foregoing proced-
ure.
D I SASSEMBLY
TROUBLE CHART
Cause
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8.
9.
Symptom Remedy
Runs slow in Fast Forward
position. Fast Forward drive belt (53)
stretched.
Lubricant on Fast Forward
drive belt (53) causing it to slip
on the pulley.
Replace Fast Forward drive belt
(53).
Replace Fast Forward drive belt
(5 3).
l.
2.
I.
2.
No Fast Forward. Fast Forward drive belt (53)
broken.
Fast Forward spindle pulley
(52) loose on its shaJt.
Replaee Fast Forward drive belt
(5 3).
Tighten set screw (6?).
l.
2.
l.
2.
No drive in Rewind position. Rewind drive belt (53) broken.
Rewind spindle pulley (52) loose
on its shaJt.
Replace rewind drive belt (53).
Tighten set screw (67).
l.
2.
l.
2.
Motor (56) will not run. l.
2. Motor (56) defective. Loose connection. Replace motor (56).
Check motor leads for cold solder
joints.
i.
2.
Wov or Flutter. l. Play-record anderase headas-
sembly(18), pressure pads (28),
or tape guide (14) dirty.
2. Motor pulley, flywheel (61), or
pressure roller (21) coated with
foreign matter.
(Continued on Page 8)
Clean these parts with a soft cloth
and alcohol.
Clean the sur{ace of these parts
with a cloth dampened with alco-
hol.
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2.
Page 5

CLTANING LUBRICATION
The record head, erase head, capstan, and AII rotating parts are provided with oilite bear-
pressure roller should be cleaned occasionally to ings and are lubricated before leaving the factory.
remove the tape residue which is worn off the tape as Under normal use, no lubrication is required for a
it passes these parts. Use a soft cloth and alcohol to long period of time. When lubrication is necessary,
remove the residue. use a good grade of oil sparingly.
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A PHOTOFACT "EXPLODED" VIEW
@Howrrd V. Srnr & Co.,lnc l96l
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FIG.3A EXPLODED VIEW OF MECHANISM
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A PHOTOFACT "EXPLODED" VIEIT
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FIG.38 EXPLODED VIEW OF MECHANISM

TROUBLE CHART {CONT'D}
Symptom Cause Remedy
3.
4.
5.
3.
4.
5.
Rotating parts binding.
Pressure roller (21) has a flat
spot on it.
Tape defective.
Clean any binding rotating part
and lubricate.
Replace pressure roller (21).
Replace the tape.
Incomplete or no erase" Erase head defective.
Defective erase head circuit. Replace.
Check circuit components.
l.
2.
l.
2.
Will notlock inRun position. Slide lock pawl (42) binding.
Torsion spring (38) broken,
disconnected, or has lost its
tension.
Free slidelock pawf(42) and lub-
ricate so it will pivot freely.
If torsion spring(38) is broken or
lost its tension, replace. If dis-
connected, reconnect.
t.
2.
l.
2.
Brake plate (f6) does not
engage the wind or rewind
hubs.
l. Brake plate spring (16) broken. l. Replace brake plate spring (16).
Pressure plate assembly (31)
doesnot return toits neutral
position whenthe Stop button
is depressed.
I. Slide return spring (2?) broken
or disconnected. I. Connect or replace slide return
spring (2?).
Pressure roller (21) contacts
the capstan intermittently. I. Pressure roller spring (36)
missing. J.. Replace pressure roller spring
(36).
MECHANICAL PARTS LIST
I
2
3
4
5
6
7
I
I
IO
II
L2
i3
L4
l5
16
L7
l8
l9
20
2L
22
23
24
25
26
27
28
2S
30
3l
32
33
22-lr0-0
84-9288
52-1492-0
2r-685-0
3l-625-0
57-6046 3l
58-262
39-282-3
22-46-L
84-9282
52-r33r-0
2l-6 56 -0
29-ri?-l
70-249-0
29-u2-0
57 -604221
84-7866
22-40-L
58-282
39-3?-5
84-11962
57-604221
72-135
22-37-r
58-372
70-25r-0
84-9071
22-r80-4
70-253-0
84-9308
39-284-3
?0-256-0
58-288
70-256 -0
70-38r-0
22-74-L
70-452-0
39-285-3
9?-9r5
39-283-3
22-L7L-4
u-r8?0
??-143-r
70-474-0
22-99-5
58-280
84-lr954
70-252-0
58-289
22-42-L
84-6726
*39-40-5
57-8032?r
37-60-3
84-9250
84-4240
69-355-0
57-604287
84-U989
84-9316
*62-79-0
?0-259-0
22-13-4
?0-250-0
70-257-0
97 -577
Reel Plate Retainer
Reel Plate Holder Ass'y.
Push Button
Mechanism Cover
Top Plate
Mach. Screw(#6-32 x I/4 Phil.
Pan" Hd.)
Flatwasher
Reel Plate Holder
Rewind Plunger
ttC" Washer
Motorboard Ass'y.
Speed Control Knob
Head Cover
Tape Guide
Brake Plate Spring
Brake Plate
Mach. Screw (#6-32 x r/4 phil.
rt. rrd. )
Head and Bracket Ass'y.
Hairpin Retainer
Flatwasher
Pressure Roller
Pressure Roller Arm Ass'y.
Mach. Screw (#6-32 x irl4 phif.
Ft. Hd. )
Button Slide
Retainer Ring
Capstan Washer
Slide Return Spring
Pressure Shoe and Pad Ass'y.
Slide Operating Link
Pressure Shoe Spring
Pressure Plate Ass'y.
Run Plunger
Compression Spring
Flat Rubber Washer
(L/ 2" x L/ 4" x L/ L6")
Plunger Detent Spring
Pressure Roller Spring
"E " Retainer
Torsion Spring
Stop Plunger
Screw (#6-32 x 3/ 8" PhiI.
Pan. Hd.)
Fast Forward Plunger
Slide Lock PawI
Plunger Guide Bracket
Shoulder Stud
Plunger Spring
Cotter Pin
Flat Washer
Feed Reel Arm Ass'y.
Brake Spring
Flatwasher
Hairpin Retainer
Spindle Pulley Ass'y.
*Drive Belt
Screw (#8-32 x 3/ L6 Hex Hd. )
Rubber Grommet
Motor and Bracket Ass'y.
Fan and IIub Ass'y.
Equalizer Switch
Screw (6-32 x /4 Hex Hd.)
Belt Transfer Ass'y.
Capstan ShaJt and Flywheel Ass'y
Flywheel Drive BeIt
Compression Spring
Take-up Lever
Take-up Spring
Left Brake Spring
Set Screw
34
35
36
31
38
39
40
4L
42
43
44
45
46
47
48
49
50
5r
62
53*
54
55
56
57
58
59
60
6l
62*
63
64
65
66
67
t- Page 8

MECHANICAL PARTS LIST (CONT'D}
Description
57 -604221
84-r1955
56-124
58-473
58-187
Mach. Screw (#6-32 xL/a Phil.
ru. Hd. )
Take-up Reel Ass'y.
Hex Nut
#10 Ext. Lockwasher
Flatwasher (7/ l7 x . 203 x. 031)
77-6?-0
58-r87
97-619
84-93r0
84-U460
Grommet Insert Spacer
Flatwasher (7/ I? x . 203x . 031)
Set Screw (#8-32 x l/ rc A[en Hd.)
Spindle Ass'y.
Cam and Stud Ass'y.
-_-l
* Drive Belt, WALSCO Part No. 1409-03 * Flywheel Drive Belt, WALSCO part No. l4I0-10
CHANN[L 2 AMP CHASSIS.BOTTOM VIEW
7025
IzAX7
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CHANNTL I AMP CHASS I S-TOP
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CHANNEL 1 AMP CHASSIS BOTTOM VIEW-CAPACITOR & MISC. IDENT.
CHANNEL I AMP CHASSIS BOTTOM VITW-RTSISTOR & INDUCTOR IDENT.
Page l0