Page of 7

Motorola 8991142 Service Manual

Car radios.
Hide thumbs
   

Advertising

Advertising

O L A 3 T M R
I O T O R S 8991142
-
MOTOROLA
GENERAL I N F O R M A T I O N
no-charge basis t o the customer. If
you a r e not already authorized a s a
Motorola Auto Radio Service Station
and you a r e interested in handling
this service, please contact your
Motorola Distributor f o r complete
details.
TYPE
Automotive
type
a l l - t r a n s i s t o r
superhetrodyne AM radio f o r stand-
a r d broadcast reception; operates
f r o m 12 volt negative ground system.
Designed f o r custom installation in
the 1963 Rambler.
This receiver
contains a plated c h a s s i s board, 5
t r a n s i s t o r s
and 2 diodes.
Some
installations u s e a r e a r speaker and
control (AK-401
-
American Motors
P a r t
#
8991 148).
T O SET PUSHBUTTONS
Allow
r e c e i v e r
to w a r m up f o r
fifteen minutes.
P u l l up on push
buttons to unlock. P u s h down f i r m l y
on pushbuttons to lock a f t e r station
h a s been selected.
All B-
connections
a r e
c a r r i e d
through the p l a c i r c h a s s i s in multi-
ple paths to the B- side. This in-
SERVICE STAT1 ON
SERVICE N O T E S
PROCEDURE
1. RADIO POLARITY
-
WHEN SER-
VICING THIS RECEIVER, THE "A"
s u r e s a good low r e s i s t a n c e r e t u r n
path. Two s e p a r a t e and independent
paths a r e provided to ground.
1. A defective
in-warranty radio
must be accompanied by the Custom-
e r ' s Warranty Policy Tag.
This tag
must be properly filled in by the
American Motors d e a l e r a t the time
of radio purchase. Accept a s war-
ranty r e p a i r s only those radios with-
in the 12-month warranty period.
The removal o r re-installation of
this r e c e i v e r i s customarily p e r -
formed by the American Motors
dealer and i s not covered by this
warranty.
Also, the removal of
motor noise, t i r e static, e l e c t r i c a l
interference,
faulty installations,
and a e r i a l r e p a i r s a r e not consider-
ed a s warranty r e p a i r s ; and t h e r e -
fore, expenses related to such s e r -
.vices should' be handled by the c a r
dealer.
LEAD MUST BE CONNECTED TO
THE POSITIVE SIDE O F POWER
SOURCE. I F CONNECTED OTHER-
WISE, RECEIVER .WILL NOT OP-
ERATE AND DAMAGE TO COM-
PONENTS MAY RESULT.
4. TO SERVICE PLATED CHASSIS
BOARD
-
To remove the plated
c h a s s i s f r o m the radio housing, un-
solder the plated c h a s s i s ground
wire f r o m c h a s s i s housing. Release
the
c h a s s i s board locking spring
and carefully lift c h a s s i s board out
of housing.
Position the chassis
board
vertically
with
respect to
radio housing f o r servicing.
2. POWER
SUPPLY
REQUIRE-
MENTS
-
It i s preferable to u s e a
storage battery (without a battery
c h a r g e r ) in place of a battery elim-
inator.
If a battery eliminator i s
used, i t m u s t be well filtered and
regulated.
After servicing i s performed, r e -
install plated c h a s s i s board. Make
certain c h a s s i s board i s properly
placed i n the grooves of the chassis
retaining
b r a c k e t s
and locked i n
position with the c h a s s i s boardlock-
ing spring. Re- solder ground lead.
3. PLATED CHASSIS BOARD DES-
CRIPTION
-
Motorola' s
p l a c i r
chassis has plating on both sides o_f
the chassis board. The exposed side
contains the actual circuit connec-
tions while the plating on the com-
ponent side of the c h a s s i s board
provides a convenient chassis B-
r e t u r n f o r components and circuit
wiring.
Plating on the component.
side also provides shielding between
the top
and bottom
of
the
unit
s i m i l a r to a m e t a l chassis whichin-
corporates hand wiring.
5. TRANSISTOR REPLACEMENT
-
When replacing a t r a n s i s t o r (other
2. Fill i n Motorola Auto Radio War-
ranty Labor Claim, P a r t Number
54P480 884 and m a i l white and g r e e n
copies to:
Service
Department
(Warranty Group), Motorola Auto-
motive Products, Inc..
9401 West
Grand Avenue. Franklin P a r k , Ill.
-
than the power t r a n s i s t o r ) , g r a s p
the t r a n s i s t o r leads (between t r a n -
s i s t o r body and plated c h a s s i s board)
with a p a i r of long nose p l i e r s to
prevent excessive heating of t r a n -
s i s t o r body during soldering opera-
tion.
3. The yellow copy of the Motorola
Auto Radio Warranty Labor Claim
q
i s to be retained by the authorized
s e r v i c e .station f o r his files.
REAR
FRONT
S
PKR
811
4. Defective p a r t s f o r warranty r e -
p a i r s made on this model a r e t o be
sent t o your Motorola Distributor
f o r f r e e replacement, supported with
the defective p a r t s r e t u r n tag o r
a
f o r m which you a r e now using.
5.
Only those s e r v i c e shops author-
ized by their Motorola Distributor
can p e r f o r m warranty r e p a i r s on a
AMERICAN MOTORS PART NO. 8991148
REAR SPEA
;RAM
X E R WIR
s .
. .
. .
. .
. .
ING DIA(
8
. . .
. . . . . .
MO'TOROIA INC.
9 4 0 1 W E S T G R A N D A V E N L E ; , r d A N K L l N P A R K , I L L I N O I S
PART NO.
68P40056627
PR
I
CENTS
COPYRIGHT
1962
BY MOTOROLA INC.
PRINTED IN U

Advertising

   Related Manuals for Motorola 8991142

Comments to this Manuals

Symbols: 0
Latest comments: