Majestic Radio & Telev. Corp. 10B27E Schematic

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Product Information:
Model:10B27E
Manufacturer:Majestic Radio & Telev. Corp. (Grigsby-Grunow)

Schematics Content:

Please note: this content is a computer-generated interpretation of the above schematic and is provided only to help assist you in locating this schematic. For the actual text, please consult the schematic above. Thank you.

Page 1:

MAJESTIC RADIO Bs
I III nn Im, I
an un new asv asm an 'sm
RFC 2 RF
(C)John F. Rider

Page 2:

MAJESTIC PAGE 19-
T5 RADIO 81, TELEVfAC`CRP__`
MODELS 1 OB2 YE
0 CAI f\ '
In I1 nun
ZS CHASSIS
RECORD cHANGEH= oak Model 6666, RcD.cH. 15-1

Page 3:

MAJESTIC PAGE I9 3
MAJESTIC RADIO &>> TELEV, CORP. MODELS lOB27E,
8 L4 gdH gd" ?c?H? gang E '? E" ??
'_ .-4 'S uno uno who-4 o| u . E gag 2
5 ai; 2 ~ ~ I 5 ,ras as -aaa, ~eM ass ~~ `=?~= 55 E" E22
'" PS4 ~?S"'?=:.3n 'I mf. ?2? s.=1=~:.3f.a gases a3~ *E
? UO 'U hD Aim (VGA)
?M;???i??'.@??5?.@?3?:%3?" E"?f>??z`? ?? ?'*'3'? Wig 593 is
(C)John F. Rider

Page 4:

PAGE 19-4 MA ESTIC
MODELS lOB2TE, MAJESTIC RADIO as TELEv. coRP_ ""'
5 Emil Q g
?Jo1'm F. Rider

Page 5:

signal input
MAJESTIC PAGE 19-5
VOLTAGE CHART
Measurements made at 117 volts line, volume control at minimum, zero
Measurements made to chassis ground with vacuum tube voltmeter
TUBE
PIII N0 VOLTAGE
RF AMP (FM
plate
screen grid
cathode
cont rol gri. d
plate
screen gr1d
cathode
control grld
osc injector grid ' 3 2 o
RF AMP (AM
plate
screen grid 95
cathode
control grid
plate
screen gri d
cathode
control grid
lst I F AMP
pl ate
screen grid
cathode
control grid
plate
screen gr1 d O
cathode
control gri d
plate
screen grl d
control grid
DISC " AM DET
plate
cathode
control grid
top cap -O
plate
late
screen grid
cathode
control grid
The Fo11owing chart is reference oscillator grid'
cillator voltage varies with frequency.
Band sw.
Frequency Voltage
GOO KC -
PARTS LIST
ITEM N0 . PAIU NO.
DESCRIPTION
Ganged Tuning Condenser A.M. & FHM. . . . . . . _ .
Trimmer 8-13 mmf (Gang trimmers). . . . . . . . . .
47 mmf., 560 V ceramic 2D5 Condenser- - - ~ - - - >>
.001 mfd 4m V ceramic 105 Condenser. . . . . . . _
24 mf 500 V ceramic 104 Condenser- >> - - - - ~ - -
1000 mmf 5(1) V mica 55 Condenser. . - - - - ~ - - -
15 mmf 5(R) V ceramic 55 Condenser . . . . . . . . .
.01 mfd 6OOV paper Condenser . . - . . - >> - - - -
Part of T2 1s .F'. transformer. - - - >> - ~ - ~ >>
Part of TS, and LF. transformer. . . . . . . . . .
Part of T5, Discriminntor transformer . . . . . . . ,
1(1) mmf 500 V mice 205 Condenser. . . . . . . . . .
%) mmf 500 V mica 20| Condenser. . . . . . . . . .
.02 mfd 400 V paper Condenser . . . . . . . . . . .
.005 mfd 600 V paper Condenser. . . . . . . . . . .
5 MAJESTIC RADIO rg TELEV. CORP. MODELS IOBEYEQ
osc. injector grid 5 ' -13 to +3.15
' s can
@John F. Rider

Page 6:

PAGE 19-6 MAJESTIC
ODELS 10B27E, MAJESTIC RADIO & TELEY7. CORP.
PARTS -- t' d
) LIST Con lnue \/
ITB# NO. PART NO. DESCRIPTION
C56 6-307 2% mmf 509 V ceramic condenser _ _ _ _ _ _ _ _ _ _
(58,059 _.___ Part of L5 coil assembly. _ _ . _ _ _ _ . . _ _ . _
C6O,?'70 6-208 234 mmf 500 V mica condenser. _ _ _ _ . _ _ _ _ _ _
C61,C62,C63,C65 _ .... Part of 'I'7 coil assembly. _ _ . _ . . _ _ _ _ . _ _
C69 Part of T8 coil assembly. _ . _ _ _ . _ _ _ _ _ . .
L4 3-189 F_M_ oscillator coil. . . _ _ _ _ _ . _ _ _ _ . . .
R1 O2-37 68 ohms imwatt 10% resistor _ _ _ . . _ _ _ _ _ _ - U
?2,R1l,R37,R42 82:1-$18 ?<6?<'Xg?hm;1;rEURt;_~o%_O$ resistor _ _ _ _ _ _ _ _ _ _ _
R7,R3Q O2-143 22,000 ohms watt 205 resistor _ . _ _ _ _ _ _ . _
R8,R1O,R43 O2-156 47,0CD ohms watt 1O$_res1stor _ _ _ _ _ _ _ _ _ _
R9 O2-41 82 ohms ft wa t 1O%I'es1St-or _ _ . _ _ _ _ _ . _ _ _
R12 _..._ Part of 4 assemb y (47,000 ohms A w 105) _ _ _ _ _
R44,R45 O2-199 470 OOO ohms 5 watt 205 reslstor. _ . _ . _ _ . _ .
R14 oz-149 as boo ohms Q watt 105 resistor _ _ _ _ _ _ _ _ _ _
R15,R16 O2-170 100 ooo ohms g watt 10; rss1sf,?r_ _ _ _ _ _ _ _ _ _
R21 oe-255 10'megohm Q watt eo; resistor _ _ _ _ _ _ _ _ _ _ _
R22 13-25 Volume con ral, 2 megohm with tap _ _ _ _ . _ _ . _
R23 O2-132 12,000 oh.m 1% watt 105 reslstor. . _ _ _ _ _ _ . . _
R24 14-7 Tone contm 2 megohm, with sw1tch. _ _ _ _ . _ _ _
R-36 Q2-213 l megohm ? watt 2.0? resistor. _ _ _ _ _ _ _ _ _ _ .
R29 ' 9-342 700 ohms O watts 10s resistor. . _ _ _ . _ . _
R30 9-2% 250 ohm 5 watt QQ; w1re wound resistor. _ . . _ . _
R50 O2-44 100 ohm Q watt 105 resistor ...._ _ _ _ _ _ _ _
RFC-1 3-187 SBAS plate choke. . _ _ _ _ _ . . _ _ _ _ _ _ _ _ _
RFC-2,RFU-3 3-183 Filament choke. _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _
RFC-4 3-104 Dlode late choke _ _ . . _ _ _ _ . _ _ _ _ . _ . _
S2 11-59 B;ld Zgtch (pilot lites & audio) . _ . _ _ . _ _ _
S3 Part of Tone control assembly, A_C. switch. _ _ _ _
T6 2-9 Power transformer _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
T8 8-185 S.W_ antenna transformer. _,_ _ . _ _ . _ . _ _ _ _
T9 52-58 Output transformer (part of speaker ass'y)_ . . _ _
15-81 Tube socket (octal) _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _
26-2 Dial lite #47 rown head). _ _ _ . _ _ _ _ _ _ _ _
26-7 Dial lite #44 blue head) _ . . . _ . . _ _ _ _ _ _ `\_/'
16-S4 Tube shiel , for GBA6 & GEES tubes. . _ _ _ _ _ . _
S-1570 D1al pointer k carriage assembli. _ _ . _ _ _ _ . _
135-30-2 D;a1 pointer, lower carriage o y . _ _ . _ _ . _ _
129-56 gial cars ter?sionhspring. 5). . _ _ _ _ _ _ _
117-90 Dial scale B_C. _ _ _ _ . _ ___..__... . _
117-QL Dial scale S.W. _ _ _ _ _ _ _ _ _ .... _ _ _
* 22-58 S eaker 12" com lete with output transformer _ _ _
115-45-2 Cgbinet, combine ion console. `_ _ _ _._.. _ _ _
122-44 Dial escutcheon grill .___ _ _ _ _ _ _ _ _ _ . .
122-3) Escutcheon glass (large). _ _ ___._. _ _ _ . .
129-45 ?gi?g Irsxseituggr above knob _ _ _ . _ _ _ _ _ _ _
S-1863 R.F'_ shelf F4 tuning condenser ass'y _ _ _ _ _ _ _ _
Pgef; ??:1r???Spg;}iYagd cH?ssisa;gc!:e{t,A;g? ?2 igxteltghanged with pin #5_ Change refers to LATE \`/
" R29 (700 ohm) Resistor is omitted in chassis using speaker #22-58.
Sets usmg 10" s%eakers _ schematic circuit remains the same.
(TUBES 5YBG'I' lf 5 4G ARE INTERCHANGEABLE)
(C)John F. Rider

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