Motorola 401 Schematic

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Product Information:
Model:401
Manufacturer:Motorola (Galvin)

Schematics Content:

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Page 1:

P GE 22-132 MOTOROLA
MODEL M01
GENERAL INFORMATION
TYPE - Universal automotive type guperheterodyne recei-
ver with sen-toneainea speeker. Designed for un-
dertilsh mounting. Receiver may be mounted be-
` hind* instrument pane'l oi some cars by using Trim
\ Plate AK-38.
"I`UNING RANGE - 535 to 1605 Kc H7 - 455 Kc
ETUBE COMPLEMENT - 6BA6 RF Amplifier
` SBE6 Converter
6BA6 IF Amplifier
6AT6 Detector-AVC-AF Amp
6AQ5 Power Amplifier
6X4 Rectifier
POWER INPUT - 6.3 volts DC, 5 amperes
7 TURNS
POINTER
TUNING SHAFT
3 TURNS
Equipment Required:
FIGURE 1. DIAL CORD RRBTRINGING DETAIL
ALIGNMENT
`l. A small fibre screwdriver for IF and RF adjustments. Z_
Z. An accurately calibrated AM signal generator -
3. A low range output meter.
Connect output meter across voice coil of the speaker.
3. Connect a 6 volt DC source oi power between "A" lead
and receiver ground. Turn receiver on and permit it to
warm up for a few minutes. Then proceed as per in-
structions in the alignment chart.
4. A dummy antenna for RF and tuner alignment. (Con-
struct dummy antenna as shawn in Figure 3 .) Ng-pg,
Keep output of receiver at approximately 1 watt
(1 watt = 1.79 volts on output meter) throughout
alignment by reducing signal generator output as
stages are brought into alignment.
l. Remove top and bottom covers to expose alignment ad-
(C)John F. Rider

Page 2:

MOTOROLA PAGE 22-133
MODEL LTO;
ALIGNMENT CHART
DUMMY GENERATOR GENERATOR TIENER
STEP ANTENNA CONNECTION FREQUENCY SET TO ADJUST REMARKS
IF ALIGNMENT
1. .1 mi 6BE6 grid (pin 455 Kc High frequency '1,z, 3 ar 4 Peuk for maximum in er-
#7) end of dial der indicated
RF ALIGNMENT
2. See Fig. 3 Antenna recep- 1605 Kc ' 5 Peak for maximum.
?ee1e through
dummy
3, 'f H 1400 Kc Tune for max. 6 ar 7
TUNER ALIGNMENT
he feeeery. Field alignment of the Quner is ne? recommended unless
Nora; The Nmer cores have been correctly aligned at 1
components have been replaced or tampered wie
to Figure 4 for proper use ef tools. and proceed
4. see Fig.: Antenna recep-
?ee1e through
dummy
h. Construct two c
to align as follows:
High frequency 5, 6 ar 7
end of diahcores
should project
1-1/32" from end
of coil form -
necessary
Figure 2
6. With receiver installed in car, me antenna fuuy extended eu.-1 dial set ?
(1) for maximum sigma of e weak station or heiee between smuuue.
ore alignment tools as shown in Figure 4. Refer
Peak for maximum in or-
0 appro:>>?imate1yl40O Ke, adjust antenna grammer
TUNER SET TO me
_-E Ai FOR 14ooKe; TRfrA3NS. G1
ANT con. ,ii
ANT E Q73 : TRIM. . 1
Q TOP TOP 3 ON _ OFF
Q BOTTOM BOTTOM SWWCH
IF TRANS, ozone TRANS
FIGURE 2. TUBE Et 'HIIIHIER LOCATIONS
(C)John F. Rider

Page 3:

MODEL M01
_ 5 EUR
Y ANTENNA
FIG
PAGE 22-134 MoToRoLA
PARTS
FIGURE
(C)John F. Rider

Page 4:

MOTOROLA PAGE 22- 35
MODEL H01
nouns e. wus Locnxon
(C).Toh.n F. Rider

Page 5:

PAGE 22-136 MOTOROLA
L4 | eezxe m sees g sans @ SATS E SA05 M ?
. ms I " I I 95 not I " - 5 ??"" 4,1 2,0
ner Parr W xmgm E 555'5'i* " MM vo ? ? '53 E 3
No . Number Description "Mimi ?`rC'I'ir2
crmssxs PARTS - ELEcrn1cA1. MT '?2'=>?3% 0 QQM c~13 31123390 Pavel* -01 mf ;00V-~- -~
capacitors ' C-15 8K400883 Paper: .03 mf 1000V . . . .
c_1 215591532 ceramic 90 mmf 500v_ _ ' C-16 23A48567'Z E}ectro1ytic; 15-10-20 mf/
withbacket .............. Fuse
c-5 2oA4s152e Trimmer, mira; zo to so mmf. FIGURE 7' sclmnnc mm
C-6 21 77373 Ceramic: 47 mmf . . . . . . . . . . . . Vibrator
C-7 20A485708 Trimmer mica: 395 to 470 mmf 0-1 4553333 Vibrant; 4-pin; non-syzw. .
C-9 8K13514 Paper: .05 mf 100V .. Dial Light

Page 6:

MOTOROLA PAGE 22-137
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kW>MWU(R)kv Ha USU
_________'________ Aa&huW was
Hg GNU
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HON&GOU HOV w?NuE5OE _mEHnWDm m@NHQm?mv
_ _'________________ MBA MESS" SQHB
FWGSUV Ha GNU MHUW MUNU: wEMxUOH
________AMUE a(R)xOOm QDSU CHEV
_H_Z KA *OH CONN
_ 3N\H *ON Mus b_?
?nD(R)(R)?M?N NIH
$OOw?(R) BIZ
NNOQQQ HIM
mavocmgom Alma
(C)John F. Rider

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