Panasonic RF-2800LBS Manual

ORDER No. RD8003-T1030
Technical Information
Radio
Poriable
ado
RF-2800LBS
RF-2900LBS
Subject: Frequency Counter Circuit
Table of Contents
P< Outline 223.028 ahat on ahecs ge added ele agp emoe awaits page 2
il, Block Diagram ... 0... cece eee page 3
ill, Preset Selector Circuit ............0.0.00.00 00.0 c eee eee page 4
As EM Bands scsi. t.ccccissed ia ian baeeoned deals ees page 5
Be AM Band 8 ste ice tie x Rateiciati se es Sota Dacia page 5
iV. Counter Signal Circuit........... 0.0022, page 5
V. Signal Selector Circuit ........000.0.0 00.0. eee page 6
Aes PM Band ssid thse see ies oar sdaagt Sobel Pod hi weches Gl tee de, page 6
Bs ‘AM Bands. felts ote ilar ot ee dae ne beeen keels page 6
tae o Matsushita Electric Trading Co., Ltd.
Panasonic P.O. Box 288, Central Osaka, Japan

RF-2800/RF-2900 Frequency Counter Circuit
4
|. Outline:
The RF-2800/RF-2900 displays the frequency of the received broadcast by counting the frequency of the local
oscillator and scaling accordingly. Figure 1 is a block diagram for the receiver. The following relationships exist
between the reception frequency (fs), the local oscillator frequency (fo), the intermediate frequency (fi) and the
display frequency (fo).
(A) fs+fi=fo...(1)
. (B) fo=fs=fotfi... (2)
LOCAL OSC
., CONVERSION
COMMAND
DEVICE
Fig. 1
With reference to figure 1, for example
Reception frequency (fs)=10 MHz
Intermediate frequency (fi)=455 kHz
Under these conditions, the local oscillator frequency (fo) must be, according to formula (1), 10.455 MHz (called
“upper local oscillation’’) or 9.545 MHz (called “lower local oscillation’’). Thus, if 10.455 MHz is used as the local
oscillator signal:
Display frequency (fo)= 10.455 (fo) — 0.455 (f)= 10 MHz (fs)...... (3)
Therefore, the display frequency is equivalent to the reception frequency.
The subtraction of the 0.455 MHz (fi) is accomplished by the conversion command device to the counter.
if the unit were designed to use the lower local oscillator frequency, a signal (preset frequency= + 0.455 MHz)
would be applied to the counter in order to add 0.455 MHz.
At the same time, in models which use different frequency, such as 2 MHz, for the intermediate frequency (fi), a
conversion signal is applied to the counter in order to add (or subtract) 2 MHz, so that the reception frequency will
be correctly displayed.
In short, the conversion signal must be equal to +fi. -

ll. Block Diagram
Figure 2 is a chart of the reception frequency, local oscillator frequency and intermediate frequency for each
band.
Intermediate Local Osc.
Frequency (MHz) Frequency (MHz) Frequency (MHz)
10.7 98.2 ~ 118.7
LW 0.150 ~ 0.410 0.605 ~ 0.865
8.0 ~ 16.0 2. | 10.0
16.0 ~ 30.0 2 | 18.0
Fig. 2
Because, the upper local oscillator frequency is used the conversion signal is subtracted from the counter circuit
for each band.
As can be understood from the table in figure 2, an intermediate frequency of 10.7 MHz is used for the FM band.
Because the upper local oscillator frequency is used, the reception frequency is displayed after 10.7 MHz has
been subtracted from the local oscillator frequency.
For the LW, MW bands, 455 kHz is subtracted from the local oscillator frequency.
For the SW bands, 2 MHz is subtracted from the local oscillator frequency.
Figures 3 and 4 are block diagrams which include the RF, Local Oscillator, IF and Counter circuits.
The subtraction is accomplished through logic signals applied to pins 3, 4, 5 and 6 of IC902.
ANT
F
RF AMP IF ; \F AMP ' IF AMP
LOCAL OSC
C101 Q103
3 1101
COUNTER COUNTER
BUFFER
e164
PRE-AMP
(3)
River
AM
CIRCUIT
Q901,0902
1C901
0000
FM Circuit
0
O
©
is
COUNTER
O AMP (2) Ree DISPLAY
O si7 Q907 1c902
2)
Swt/Swe/Sw3
TUNING CIRCUIT
L410,L109, L108
CIRCUIT
£102
EP
NOTE:
1.8902 terminal Nos. 3.4.5,6:for Preset
L. condition in terminals 3,4..5 and-6):—10.7MHz
2. $1:Band Selector
FMLW/MW/SW1/SW2/SW3 Fi ig. 3 FM Section Block Diagram
shown at FM position

C101
FM
O
==
©
.
SW
2nd
MIX
2)
T102 —™ 1102 15
O RF AMP
Q108
: SWITCHING
Ei Q105, Q106
000000
“oO l
O TUNING
O CIRCUIT
a
COUNTER COUNTER COUNTER COUNTER
PRE-AMP G} oriver (8) AMP @} circuit DISPLAY
Nore
Q901,0902
Ic901
a908
1C902
$1
Band
Selector
o
FM/LW/MW/SW1/SW2/SW3 (Q)@&E)
shown in MW position.
OSC COILS
L118,L117,
L1t6,0115.
L114
IC902 terminals '3)..4),.5':and 6, For Preset
Fig.4 LW/MW/SW Section Block Diagram
lll. Preset Selector Circuit
Figure 5 shows the relationship between the preset terminals (3, 4, 5 and 6) of IC902 and the preset frequency.
Preset terminal
Band
|
Preset Frequency
(MHz)
Fig. 5

Figure 6 shows the preset selector circuitry.
COUNTER
CIRCUIT
IC902
CONNECTER
CP2-CS2
$1-9 :
O
LW MW SW1SW2SW3
a or oy
DISPLAY
Preset
terminal
A. For FM:
(a) Terminal 6 of IC902 becomes an ‘'L” level. (through connectors Pin 1—-L120—Pin 7-+GRND)
(b) Terminal 5 of IC902 becomes an ‘'L" level. (through S1—9 .—Connector Pin 2.)
(c) Terminal 4 of C902 becomes an “'L”’ level. (through S1—-9—» D106—+Connector Pin 3)
(d) Terminal 3 of IC902 is set at an ‘‘L”’ level. (through S1—9->Connector Pin 4)
As a result, (refer to the table in figure 5) the counter circuit subtracts 10.7 MHz from the local oscillator
frequency (the input signal), and the result is displayed as the reception frequency.
B. Inthe same way, for the LW, MW and SW bands the condition of each preset terminal is changed by the band
selector (S1—9) consenquently, the preset frequency shown in the table in figure 5 is obtained, and the correct
reception frequency is displayed.
IV. Counter Signal Circuitry
Figure 7 shows the counter signal circuitry.
A.
For
each
band,
the
local
oscillator
signal
from
the
local
oscillator
circuitry
is
selected
(FM,
LW,
MW
or
SW)
by
SW-A,
and
is
supplied to
terminal 3
of
the
driver
circuit
(IC901).
B.
This
signal
is
frequency
divided
(1/8)
by
IC901,
and
is
output
from
terminal
8.
At
the
same
time,
a
signal
(frequency
divided
by 1/80)
is
output
from
terminal 9.
DRIVER CIRCUIT
C901 COUNTER CIRCUIT
IC902
Counted Frequency
from Local OSC
(9) X'tat OUT
FM: 98.2--118.7 MHz
LW: 605~865 kHz
MW: 987~2.072 kHz
Preset DISPLAY
terminal
SW1: 5.2-- 10.0 MHz
SW2: 10~18 MHz
SW3: 18~ 32 MHz

C. These two output signals are selected (by SW-B): the 1/8 frequency divided output (from terminal 8) for the
LW, MW band and SW:~SWSs bands, and the 1/80 frequency divided output (from terminal 9) for the FM band
are applied to the input terminal (terminal 2) of the counter circuit (IC902).
D. These frequencies are converted, by !C902, into the original local oscillator frequencies. Moreover,
depending upon the signal applied to the preset terminals, the necessary frequency for each band is
subtracted from the derived local oscillator frequencies and the resulting frequency is supplied to the display.
V. Signal Selector Circuitry
Figure 8 shows the signal selector circuitry for the counter.
A. For the FM band, since the band selector (S1-9) is in the ‘‘FM”’ position, the base of each transistor (Q904,
Q905 and Q906) becomes an ‘‘L”’ level, consenquently, Q904 and Q905 turn on, and Q906 turns off.
As a result, the signal from the FM band local oscillator flows as shown below, and is counted at the counter
circuitry.
FM Local osc + C902 — Q901 —» Q902 -» C908 — IC901(3) — IC901(9) + C914—» Q907 — IC902(2)
In this case instance, the local oscillator circuitry for the LW, MW and SW bands does not function (refer to
figures 3, 4 and the +B selector).
The signal (AM) from the 1/8 frequency divider is output from terminal 8 of |C901.
However, because Q905 is turned on thus shorting its collector to emitter junction, the base to emitter junction
of Q908 is also shorted, therefore, the signal current can not flow to the counter circuit.
NOTE:
é
ot
$1-8:
Band
Selector
Sw3
Se
te
a
FM/LW/MW/SW1/SW2/SW3
CLP
UP
Ail
FS.
shown
at
FM
position.
@)
+
G):
ee
»)
|
cp2
CONNECTOR
'
©
6)
O|
a
R908 DRIVER CIRCUIT
—> Q904 1c901
/8
R901
COUNTER CIRCUIT
Ic902
FM BAND C902 Q901 Q902
LOCAL OSC i) (Sh
CIRCUIT ss el
c303
AM BAND
LOCAL Osc].
CIRCUIT R907
(2) INPUT
Fig. 8
B. For the LW, MW and SW:~SWs bands, Si-9 is open, the base (Q904, Q905 and Q906) become an ‘‘H” level,
consenquently Q904 and Q905 turn off, and Q906 turns on.
As a result, transistor Q907 turns off (base to emitter junction shorted by Q906) which results in Q901 turning
off. Therefore, the signal from the AM local oscillator circuit flows as shown below, and is supplied to the
counter circuitry (IC902).
AM local osc — C903 — Q902 — C908 — 1C901(3) — 1C901(8) — C912 —. Q908 —. IC902(2)
In this case, the local oscillator circuitry for the FM band does not function.
The
above
is
a
description
of
the
operation
of
the
frequency
counter
circuitry
for
models
RF-2800/RF-2900.
The frequency
counter circuitry
for other
models is
similar.
Refer to
RF-4900
Technical
Information
(Order
No.
RD8002-T
1028),
because
the
counter
circuitry
for
models RF-2800/RF-2900
uses
the same
LSI
as
model
RF-4900.
|
RD
® x!
Printed
in
Japa

EM/LVW/MW/SW
6-BAND PORTABLE RADIO
Mi SPECIFICATIONS
Frequency Range: FM
LW
MW
SW:
SW2
SWs3
Intermediate FM
87.5~108 MHz
150~410 kHz (2000~731m)
525~1610 kHz (571~186m)
3.2~8 MHz (93.8-~37.5m)
8~16 MHz (37.5~18.7m)
16~30 MHz (18.7~10m)
10.7 MHz
Frequency: AM (LW, MW & SW) 455 kHz
Sensitivity : FM
LW
MW
SW;
SW2
SWs
2.5uV (S/N 26 dB),
2uV (3 dB down limitter sens.)
704V/m (S/N 6 dB), 600zV/m (S/N 26 dB)
302V/m (S/N 6 dB), 400“V/m (S/N 26 dB)
1.8uV (S/N 6 dB), 192V (S/N 26 dB)
0.82V (S/N 6 dB), 92V (S/N 26 dB)
1.24V (S/N 6 dB), 134V (S/N 26 dB)
Power Output: 3W DC Maximum
National Panasonic
Power Source:
Power Consumption:
Speaker:
Dimensions:
Weight:
Impedance:
ORDER NO. RD7803-1549
ervice Manual
Radio
RF-2800LBS
AC 110~125V/220—~240V 50-60 Hz or
9V (Six ‘‘D” Size Flashlight Batteries)
(National UM-1 or equivalent)
11W (AC Only)
10 cm (4’’) PM Dynamic Speaker
381(Wide) x 246(High) x 120(Deep)mm
(15° x 942"' x 43")
2.3 kg. (8 Ib. 10 oz.) without batteries
Speaker 2.0.0... .....ccccceccccue suas BQ
Earphone Jack..................... ixe)
Multiplex Out Jack ......... 10k. (40mV)
FM Antenna Terminal ......... 752
Phono Jack.................. 500k (50mV)
Recording Out Jack ...... 80ka2 | 100mvV)
Specifications are subject to change without notice for further improvement.
Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka, Japan

M@ TO REMOVE CABINET COVER
1.
Remove the battery cover.
2. Remove the six (6) screws (nos. 1~6) for the cabinet cover,
tf
as shown in fig. 1.
. Remove the cabinet cover.
. Pull out sockets from PC board.
. To reassemble, reverse the above procedure.
M@ TO REMOVE PC BOARD (IF, RF Circuit)
1.
Onno
7.
8.
Remove the cabinet cover. (Refer to cabinet cover removal
instruction.)
. Remove the band knob. (To remove the knob, wind a cord
around the control and pull it outward.)
. Turn the tuning knob fully counter-clockwise.
. Pull out the sockets from PC board.
. Unsolder lead from PC board.
Remove the eight (8) screws (nos. 1~8) for the PC board,
as shown in fig. 2.
Remove the PC board.
To reassemble, reverse the above procedure and note the
followings.
Notes
1.
2.
Turn the tuning knob fully counter-clockwise.
Turn the tuning capacitor shaft fully counter-clockwise.
M@ TO REMOVE FREQUENCY COUNTER
1.
o
Remove the PC board (IF, RF circuit). (Refer to PC board
removal instruction.)
. Remove the two (2) screws (nos. 1 & 2) for-the frequency
counter, as shown in fig. 3.
. Remove the frequency counter.
To reassemble, reverse the above procedure.
@ TO REMOVE PC BOARD (Frequency Counter)
1.
Remove the frequency counter. (Refer to frequency counter
removal instruction.)
2. Remove the four (4) screws (nos. 1~4) for the frequency
counter cover, as shown in fig. 4.
3. Remove the two (2) screws (nos. 1 & 2) for the PC board, as
shown in fig. 5.
4. Remove the PC board.
5. To reassemble, reverse the above procedure.
Screw No.1
(XTN3+6F)
Screw No.2
XTN3-+6F)
Fig. 5
[2] rr-2800LBS
Screw No.1(CA17) Screw No.2(CAi7) Screw No.3 (CA17)
Screw No.4 (CA) Screw No.5 (CAt7) ~~ Screw No.6 (CAi7)
Fig. 1
Screw No.1 Screw No.2 Screw No.3 Screw No.4
(XTN3-+6F) (XTN3+6F)
(XTW3-++10F) (XTW3+10F)
a
a
Screw No.5 Screw No.6 Screw No.7 Screw No.8
(XTW3-++10F) (XTW3-+10F) (XTW3+10F) — (XTW3-++-10F)
Fig. 2
Screw No. 1 Screw No.2 Screw No.3 Screw No.4
(XTW3+10F) (XTW3+10F) (XTW3-++10F) (XTW3+-10F)
acre
Screw No.5 Screw No.6 Screw No.7 Screw No.8
(XTW3+10F) (XTW3-+-10F) (XTW3+10F) — (XTW3-++10F)
Fig. 3
Screw No.1 Screw No.3
(XTN3+6F) XTN3+6F)
: Screw No.4
Screw No.2 XTN3-+-6F)
(XTN3-+6F)
Fig. 4

M@ TO REMOVE DIAL SCALE CHASSIS
1.
Remove the PC board (IF, RF circuit). (Refer to PC board
removal instruction.)
Remove the tuning knob.
Remove the six (6) screws (nos. 3~8) for the dial scale
chassis, as shown in fig. 3.
Remove the dial scale chassis.
M TO REMOVE DIAL MECHANISM
1.
Remove the dial scale chassis. (Refer to dial scale removal
instruction.)
2. Remove the dial belt, as shown in fig. 7.
3. Remove the two (2) screws (nos. 1 & 2) for the dial mech-
anism, as shown in fig. 6.
4. To reassemble, reverse the above procedure and note the
followings.
Notes
1. Turn the tuning shaft fully counter-clockwise.
2. Set the dial scale at the position, as shown in fig. 7.
3. Attach the dial belt.
4. Refer to dial scale removal instruction.
@ TO REMOVE DIAL SCALE
1.
Remove the dial scale chassis. (Refer to the dial scale
chassis removal instruction.)
2. Remove the one (1) screw for the dial scale spring, as
shown in fig. 7.
3. Remove the dial scale.
4. To reassemble, reverse the above procedure and note the
followings.
Notes:
1. Loosen the two (2) screws (nos. 1 & 2) for the dial scale
gear, as shown in fig. 8.
2. Set the catch of dial scale gear to the start point of dial
scale, as shown in fig. 9.
3. Turn the tuning shaft fully counter-clockwise.
4. After mounting the PC board (IF, RF circuit), turn the dial
scale by pushing the catch of dial scale and set the start
point of dial scale to the catch of cabinet, as shown in
fig. 10.
5. Tighten the two (2) screws (nos. 1 & 2) for the dial scale
gear, as shown in fig. 10.
Screw No.1
Catch of Cabinet Start Ponint (XXAR3H6S)
Fi
Bie S. se
Screw No.2
(XXAR3H6S)
Fig. 10
Seiew No.1 ‘a Sorew No.2
(XTW3-++10F) (XTW3+10F)
Fig. 6
0d.
Screw
(XTN23-+6C) : a
ae in OS
Dial
Belt
©
Sg
ae’
ge .
5 RSGBIBS
eas
Fig. 7
Screw No.1 Screw No.2
(XXAR3H6S) (XXAR3H6S)
Kw Kw | qed
-| SWI | SW2' Syvads
2 My
Catch Start Point
Fig. 9
RF-2810L-BS [3]

M@ TO REMOVE PC BOARD (AF Circuit)
Srey : een ( Subp
: e XTW3-+10F XTW3-+10F,
1. Remove the dial scale chassis. (Refer to the dial scale ( )
chassis removal instruction.)
2. Remove the six (6) knobs for the RADIO, LIGHT, BAND
WIDTH, VOLUME, BASS and TREBLE.
3. Remove the five (5) screws (nos. 2, 3, 5, 6 & 7) for the PC
board, as shown in fig. 11.
. Unsoider lead from PC board.
. Pull out sockets from PC board.
. Remove the PC board. :
. To reassemble, reverse the above procedure.
NOOO
Screw No.4 “Screw No.5 Screw No.6 Screw No.7
(XTW3-++H10F) (XTW3-+10F) (XTW3-F10F) (XTW3-+10F)
@ TO REMOVE PC BOARD (Control Circuit)
1. Remove the dial scale chassis. (Refer to the dial scale Fig. 11
chassis removal instruction.)
2. Remove the three (3) knobs for the SW CAL, RF GAIN and Indicator
PITCH. (To remove those control knobs wind a cord around
the control and pull it outward.)
3. Remove the two (2) screws (nos. 1 & 4) for the PC board.
. Remove the PC board.
5. To reassemble, reverse the above procedure.
>
@ TO REMOVE INDICATOR
1. Remove the PC board (AF circuit).
(Refer to PC board removal instruction.)
2. Unsolder the terminal of indicator, as shown in fig. 12.
3. Remove the indicator.
4. To reassemble, reverse the above procedure.
M@ HOW TO REPLACE CHIP
1. Remove solder for chip completely. Cc :
: ; Pe | Color | Original Parts Name Service Parts Name
2. Remove chip by nippers, as shown in fig. 13. hie Resistor Garbon Fegictor
3. Use tube for service parts as shown in fig. 14 and solder
)
service
parts
according
to
following
table.
(please
refer
Blue
Shi
Sapa
rerarie
Capecner
to
Circuit
Board
Wiring
View
for
the
value
of
resistor
and
capacitor).
Ceramic
Capacitor
Carbon
Resistor
Fig. 13 Fig. 14
[4] pr-2800LBs

M@ BLOCK DIAGRAM
TELESCOPIC
ANTENNA CERAMIC FILTER
1 site
7 jee our
| TUNE/BaTT
INDIG: SF a
INDICATOR uel
©) (1) £3}
| oc-emenasis Si2 BASS TREULE
Svs OS AF
Pal | PRE AMP
Hl
VOLUME
(>
RF GAN |
COYTROL, | EP/EXT SP
© BFO
CERAMIC
FILTER
|
i
: [ie Reet 1 ee Paeeoeeerener
CERAMIC FILTER
OSC Ist 4
FER ; Q IBFO PITCH q
a {* ° CONTROL
Sat / SP
(IMP 82)
Gov2 COUNTER DISPLAY POWER AMP
COUNTER
SS ee sami, 7
crysrat | naQ
tf 7
: /
PUWER 7
oc SV REGULATOR oI acove cA, J ACIN
+
(FM IN}
Dc ov
Fig. 15
M@ ALIGNMENT POINTS ©
. SW3 ANT LW ANT LW ANT MW ANT
. 30MHz Sts [TPQ] 150kHz art in 400kHz 550kHz
SWe ANT SWs ANT CTio1
16MHz 16MHz
[sl
FM OSC
[9] a 87.2MHz_
§ FM OSC S AM tat IF
: Zz
SW: ANT ,
e 6 ole
(Li) " $Ws OSC SW; OSC @
MWosC 16MHz — 8MHz
Mw osc
woow" 19] 550kH2
i
ise
Z SWs OSC
ua [9]
LW OSC CTos
150kHz $W2 OSC SWe OSC
16MHz @ 8MHz
rs
AM 3rd :
{Les}
SW: ANT
8MHz
FMTUNE
106MHz
455kHz
AM Ist IF ' BFO OSC
z ; 455kHz RS)
: eee [Q]
iz
Thos
Fig. 16
RF-2a0L-BS [5]

M@
ALIGNMENT
INSTRUCTION
READ
CAREFULLY
BEFORE
ATTEMPTING
ALIGNMENT
1.
Set
volume
control
to
maximum.
wide
ON
position
for
other
adjustment.
2,
Radio
ON/OFF
switch
to
ON.
9.
Set
pitch
control
to
center.
3.
Set
bass
and
treble
control
to
maximum.
10.
Set
BFO
switch
to
ON
position
for
BFO
adjustment,
4.
Set
band
switch
to
MW,
LW,
SW
or
EM.
and
to
OFF
position
for
other
adjustment.
5.
Set
digital
display
switch
to
OFF
position.
11.
Set
SW
Cal
control
to
center.
6.
Set
RF
gain
control
to
high.
12.
Set
power
source
voltage
to
9V
DC.
7.
Light
switch
to
OFF
position.
13.
Output
of
signal
generator
should
be
no
higher
than
8.
Set
FM
AFC/Band
width
switch
to
narrow,
OFF
position
necessary
to
obtain
an
output
reading.
for
the
AM-IF,
BFO,
and
FM
adjustment,
and
to
@
AM
AND
SW
ALIGNMENT
SIGNAL GENERATOR or
BAND | SWEEP GENERATOR
‘CONNECTIONS FREQUENCY
RADIO DIAL
SETTING
INDICATOR
(VTVM or SCOPE) | ADJUSTMENT
REMARKS
AM-2nd IF ALIGNMENT
Fashion loop of
1
several
turns
of
455
kHz
Point
of
non-
Output
meter
across]
T101
(AM
1st
IFT)
|
Adjust
for
maximum
(1)
wire
and
radiate
30%
Mod.
interference.
voice
coil.
Ti02
(AM
2nd
IFT)
|
output.
signal
into
loop
of
at
400
Hz
Tioa
(AM
3rd
IFT)
receiver.
LW-RF ALIGNMENT
Adjust for maximum
output. Adjust Lso2 by
moving coil bobbin
along ferrite core.
Adjust for maximum
Lise (LW OSC Coil)
(*#) Lioz (LW
ANT Coil)
CT112 (LW OSC
150
kHz
Output
meter
(Refer
to
fig.
17)
|
across
voice
coil
400
kHz
Trimmer)
|
output.
(3)
LW
4
400
kHz
(Refer
to
fig.
18)
CTi0o1
(LW
ANT
Repeat
steps
(2)
Trimmer)
|
and
(3).
.1\| Adjust for maximum
MW
re
550
kHz
550
kHz
Output
meter
Tig
Coil)
output.
Adjust
L102
by
(Refer
to
fig.
19)
|
across
voice
coil
:
moving
coil
bobbin
ANT
Coil)
along
ferrite
core.
CTi11
(MW
OSC
Adjust
for
maximum
1500
kH
1500
kHz
Trimmer)
|
output.
MW
o
z
(Refer
to
fig.
20)
iM
CTi02
(MW
ANT
Repeat
steps
(4)
Trimmer)
|
and
(5).
(+)
Cement
antenna
bobbin
with
wax
after
completing
alignment.
AM-1st
IF
ALIGNMENT
Connect to EXT
ant. terminal
through ceramic
capacitor (10 PF).
Negative side to
earth
Lios (AM 1st IFT)
je
Trios
(AM
1stIFT)
|
Adjust
for
maximum
Tios (AM 1st IFT) output.
Point of non-
interference.
(6) SW:
SWi-RF ALIGNMENT
L116(SW:
OSC
Coil)}
Adjust
for
maximum
(7)
sw
3.5
MHz
Output
meter
1
.
(Refer
to
fig.
21)
|
across
voice
coil.
Li10(SW1
ANT
Coil)
output.
CT110
(SW:
OSC
Adjust
for
maximum
3
8.0
MHz
“
Trimmer)
|
output.
(8)
(Refer
to
fig.
22)
CT107
(SWi
ANT
‘|
Repeat
steps
(7)
Trimmer)
|
and
(8).
SW2-RF ALIGNMENT
L11s(SW2 OSC Coil)
L109(SW2 ANT Coil)
CT109 (SW2 OSC
Adjust for maximum
output.
Adjust for maximum
4
8.0 MHz
(Refer to fig. 23)
(10)
i
wv
Trimmer)
|
output.
(Refer
to
fig.
22)
CT106
(SW2
ANT
Repeat
steps
(9)
Trimmer)
|
and
(10).
SW3-RF ALIGNMENT
16 MHz
(Refer to fig. 23)
Li1a(SWs3
OSC
Coil)]
Adjust
for
maximum
Lios(SWs
ANT
Coil)|
ouptut.
CTios
(SWs
Osc
Adjust
for
maximum
Trimmer)
|
output.
CT10s (SW3 ANT Repeat steps (11)
Trimmer) | and (12).
30 MHz
(Refer to fig. 24)
[6] RF-2800LBS

M@ FM ALIGNMENT
SIGNAL GENERATOR or
SWEEP GENERATOR
CONNECTIONS |FREQUENCY
RADIO DIAL
SETTING
(Viv
or
scope)
|
ADJUSTMENT
EMARS
FM-IF ALIGNMENT
Connect to test ; peatiileass vert. amp.
point TP: through oint of non- | of scope to test point
FM 0.001F. Negative 10.7 MHZ | interference. | TPro2. Negative side Trios (FM IFT)
side to earth. to earth.
FM-RF ALIGNMENT
a
Adjust for maximum
amplitude.
(Refer to fig. 27)
(1)
Connect to test
point TP2 through
FM dummy
antenna. (Refer to
fig. 28).
Variable
capacitor
fully closed.
Output meter across Lios (FM OSC Coil) (*) Adjust for maxi-
87.2
MHz
voice
coil.
mum
output.
(2)
90 MHz
(Retor to fig. 25)
Lios (FM (*) Apjust for maxi-
(3) u TUNE Coil) mum output.
seni CTi04 te OSC (+) Adjust for maxi-
z rimmer mum output.
(4) 106 MHz « CTi03 (FM TUNE Re
peat stepe.
(Refer to fig. 26) Trimmer) (3)~(4)
(*) Three output responses will be present; proper tuning is the center frequency.
M@ BFO ALIGNMENT
SWEEP GENERATOR RADIO DIAL | INDICATOR
BAND
SErTG
(VIVM
or
SCOPE)
ADJUSTMENT
REMARKS
CONNECTIONS |FREQUENCY
BFO ALIGNMENT Note: Set band width switch to ‘“‘Narrow".
. Cut off modura-
eeehn loop 2, tion sae tune to
several
turns
0
.
signal.
wire and radiate Audio Gutput from | 1 449 (BFO OSC Coil) | 2. Set BFO
signal
into
loop
of
switch
to
ON.
receiver. . ag for zero
eat.
@ TUNE/BATT METER ADJUSTMENT
1. RADIO RECEIVER SETTING 2. REMARKS
+
Set
band
switch
to
AM.
+
Adjust
Rizo
so
that
the
en
+ Set volume control MIN. pointer of meter stays
+ Set switch to. as shown in figure right.
+ Set BFO switch to OFF.
+
Set
power
source
voltage
to
9
volts
DC.
Pointer
eee
ey bl LS
MW (550 kHz) SW; (3.5 MHz) SWa (8 MHz) FM (90 MHz)
SWs (16 MHz)
Fig. 19 Fig. 21 Fig. 23 Fig. 27
A
To SG
(SG imp. 600)
1 To Wee aver
E
LW (400 kHz) MW (1500 kHz) SW: (8 MHz) = SWs (30MHz) —- FM (106 MHz)
SW2 (16 MHz)
Fig.
18
Fig.
20
Fig.
22
Fig.
24
Fig.
26
Fig.
28
[7] AF-2800LBS

[ws we
° °
4 ivy 14
Lape. 4 te
OF 10) “Us tie.
20} 48.0%
Trot 02 wos
04 30] (04 t05 104
DISPLAY Sw
BAND WIDTH LIGHT POWER
oro glo O10
eel Rl oso
10 ZO oO 20! 020
FM - LW~ MW- SW1- SW2 ~ SwW3s
BOTTOM VIEW
Q201,203,204
Q301~308
@ VOLTAGE
Qrol
Notes:
» Si-1~Si-10: Band switch in ‘‘FM”’ position.
S2-1, S2-2: Digital display switch in “‘OFF" position.
S3-1, S3-2: BFO switch in “OFF” position.
Sa-1: Band width switch in ‘‘NARROW"” position.
Ss: Radio ON/OFF switch in OFF” position.
Ss: Light switch in “OFF”’ position.
S7: Phono/Radio switch in “Radio” position.
WHONAARYNS
. Se: Voltage selecter switch.
. DC voltage measurements are taken with 10 ka/V voltme-
ter from negative terminal of battery.
Eke FM position (
Rissa a netnin SW
Position
) iain agencies AM position
10. omark...... chip resistor and capacitor.
11. Battery current. No signal
Anode
D101,102,104,108
D201,202,203,401
402,403,404
Maximum output ............0000:000000e 600 mA
D103,105,106,107
302,303
Qio4
Qios
Q
106
Qio7
Q
ios
FM
FM
AM
]
[-
FM
FM
FM
aM
Sw PM
AM
Sw
oT
sev
|]
—
rm
|
aM
|
o|
3av
|
{cl
aav
‘ov
cl
ov
Let
owv
0.66v
|
445v]
4.45V
c
ov
|
olav
|
4.2v
“sl
iav
|
|
ol
ov
[ai
|
af
ov
Bl
tay
ov
al
vav
el
368v
o1av]
3a7v
|
aisv
B/
oeav
|
o6av!
oav
e|
2av
ra
ov ov
E
L
0.85V
ov
E
2iv
E
4.4Vv
0.66V
4.45V
4.45V
E
ov
ov
ov
le]
O.67mA
—S
ov
av
i=
oama]
[
te]
O.8ma
~
is]
2ama]
23ma
Q201
Q
202
Q203
Q
205
Q
206,207
Qgo1
8.3V
cy
5av
ce]
23v
ce]
o2zsv
c
ov
“FM
sw
5.4V
a
[a
3v
al
a3v
ej
35v]
[al
oa
cl
aay
ow
sav
|
Pepe
i
Ee]
vow
€[
avev
eT
ov
Bf
tasv
|
oasv
|
e| o.66V} O17
Q907 Q 908
sw
FM
|
sw
FM
Sw
ON
25v
|
3
=!
ot
25V
|
3.5V
4.3V
a
4.3V
B]
49v
4.0v
4.9V
aov
|
ar]
|
a
4.9V
4.9V
103
am
|
fm]
AM
1
0.3
9]
ov
-
WW
2
an
tol
ov
|
av
3
2.6V
nto
f
owl
4
o.ov
12|
o2v]
37v
5
4.4V
13|
oav]
a5v]
6
a4v
ta]
ov
4.45V
7
a.4v
is}
ow}
sav]
8
anv}
|
16)
0.2V
|
52]
[8] RF-2800LBs

Schematic Diagram-—Mode! RF-2800LBS
t . 7 Qze2 Qz Q205 D202 Qro8. 207
Qiol Qi02 Dro Qr03 ive Qios Qie Diaz iCzo1 Qior Diss Deer Qzo: Qroa
28K49
2801047
RVOSDI13.
=.
2SA838
=.
25
A838
28A838
280828
MA150
ANT210
280845
RYDSDII3
RVDEQAQ1OST
280387
288544
280945
286945
288173
—
AVDKB162C
2801568
EM
RE
AMP
FM
BUFFER
AMP
AFC
FM
OSC
FM
MIX
SWITCHING
SWITCHING
SWITCHING
AM
CONV
&
FM/AM
IF
AMP.
METER
AMP
BFO
PITCH
CONT
REGULATOR
REGULATOR
REGULATOR
AM
AMP
PRE
AMP
AF
AMP
AOC
POWER
AMP
TELESCOPIC oe en enema in - iri - _ a to | + - ~
ANTENNA, Ria 47 6 Dros Dig R233 f00 es
T
21
i
=e
st
acy
RVDROSRIEB
MA150
;
Tee
Eltts
1
..
topes &. = Z = = REGULATOR SWITCHING i - 3 i SL} O220mM0.033
aye :
! Q = 6 = 2 aot
[ | = ae = 5.38 a 2 oy alee 22 {
:
0
e
aT
8
al
G2
|
|
aay
2212
330k]
Os
z
8
gay
coms
9 " : u “
pa
5
Rug
1K
Res
Bo
-~
Res
68
ween)
|e
=
Cuae
}
:
save
:
ie.
5 rs Ele’ Te” i be 3 AN7211 caf of Rave 68 : ’
6 3 e 2 g oo S H g am EM IF AMP & g | S
: = i; < 3 9 <4 5 2 FM/AM/SSB OET & Bde ge 020] an 7
= g eg g 2] ak = Ref ge 8 “ METER AMP Oo Bor a eV Gp z ;
3 2° nO G5) |e oc i0,022| & [EM | aM | By Chee Cros |. [aw fim pk 5 x — fo o+ ] Ble Reza aad LY 20) a
a. oO BS] Rus 40 , bg. - WIV) Lori te Se Loy. Lav). | (ov) Wavy OO. hw) covy ¥ 2 “ 3 s iM Q - = 8
0 2 } LO@AH+~)}-O-4 -O-O—-)-O)-O HF - re 203 a - Sy Oc 3 fe
= x am >* ‘ f Ey Av) a) Ya sv a (ov) 2g we & [t+ seat sy a |EP/EXT:
<
a)
=
&$.0T
gy
aor
if
ay
‘TO.
ia
‘avy
on
Poor
Laws
(ov)
g
RVDMZ2038
=
oe
=
a
a
mall
5 . x fF S0et AL gy 1 FM fF AMP Icio1 FM 1B. AMP FM DE IC 102 vi eg REGULATOR S + 2 sp
“
Le
Q-J-O
oO
8
'
gS
oe
=
3
SP
w ‘i re) if! Sy t i fOo°M BA
Cuwier CasC8p Rise2ok If feosc]- [anc] [An af ane METER] [BEO Ls : se a t. B C2001 6
c
0A
peg
exrmst
BVI
i!
cm
flaw
yer}
ov
[oa
era
eS
+8
S
é
y of) . nu BV) AsV) 26 ia 71 05V) ov Ag rv yA.) dyoev | SF bel So Q pee 50V3.3
g
|e
4
tw
5
3
‘F
ra
©
Doe
Ome
(3)-(2
mad
Onn@
Omnt
©
Da
Gies
51005
|e
Cas
g0v0,!
S
Cas
2
ae: { og Sh ac ema (CRS) ED) Oe ca he sa+[T fs jg Ta alot sB-pgs tc 2 5 a {
Fat Z 7 5 2 FES | i > a (9.9V) {C34 MO, ¢ ols S yf Bla lated > 51-8 * a S eo Ceos Sovi} C213 M0.C038 Re:
fe
;
Ef
a
if
2
/-
ti
CFie5
eloh
BLS3
fee"
a
Be
Sold
|x:
3
3
3
eT
si
Laat
ie
aa
- 0 > = ;
‘ page Tete if 8 oA a ae [-i = gPge mez |2 S gx R2aj 2K
osiiod
Z
i)
if
e
"Rizo
2.2K
Z
4
apemedne
8
Sia
=
5
*
are
SF
R
ch
%
SSS pee seas Se Sp See So t 7 a PS are | I. " 3 we }Coremao}! Reee4.9 b
AM RE AMP r ab ms 21 + oe! = 8 MIB} 22 f os £ a): 8 Sa-} S > ev g g
if ra i ei Sys 0] S/S ]ev C1800. ef @ an van ssl @ cat A t 8 a
‘
com
Lee
2
a)
oT
CSS
By
ral
ee
tee
“|
3
sf
“lx
vay
&
$
190.022
433K
IAS
MPXOUTE
Ry
40K
; 2 t ay $ & £ Jo} Ter re) a sav © ;
Qin
f
Tom
Us
oO
o
a
Ri34.
He
x
Lie
B
oO
2
—
4
Saxe
280945
/
&
fi
Be
i
vee.
[8]
ta
ek
C
a*
3fO
sik
£2
32°73
|
y o siaes a Vo Sa] & = + oo g peaseMoo! F
: re § = 2
RF GAIN CONT y wwf sty JPRS g (> Rua 49 4 4. 2 LZ | iama 3 i
:
we
~
ms
G45)
Quogt.t5v>
(oeav)
!
i
1
hal
3.
3
a
6
Diee
:
my
iW
is
"9
is
(O86)
3.7V3
ay
2
Zz
Zz
RVOSDI13 2 if) Le GIR ine) 3 { {
COUNTER:CAL.
"4
t
5
a
Pig
tiara
5
1
re
R157
ISO
L
4 oe = Sia ate o 3 S
/ yi “ > jo 6 Wt ce = tl a 3 : Dies 3
i ob ; €4.56V> = x 7 MU & 3 a 9, 1D) 9 St! Ste a Se D401, 402. 403,464
/ ag YG
| © 4 3 i ©O® O ®@ ® RVDIOEt
7
S
‘
isa
’
N
OFF
ON
RECT
a eo = if! NARROW WIDE OFF _ON DIAL LIGHT. 7
rofy fF > t L120 -
‘ : ‘ ~ 4~—3!! Qa ie
4 a aoe
,
Hh
2
-.——
+
BXGKBX2
Ss
ae
TREKEXG
KECK
I
2802001
f i}! ah DC-DC CONV
‘
at
A
|
‘
Des
Chee
0.01
g
ete
, aa eB rae } i 5X4 XRK2K1 eee IX EXSX4 X31 ee 8
?
a
Viv
:
8
=
2
Dso2.903
9
‘ «LOW frees ss >
a 3) Oy 3 & 8 ' Sls MA1S0 ' g
' S ° ' 5 RECT s
( TOES eee le Oeaal ae sje el 3
\ ficove . a C
:
eA
ah
@)
3
a
a
—
CRs
gasgé
tt
tre
rete
ore
Levcia
satay
‘ eta Raso [K x - _ = -
, ; ihe 2.3m S 6 é ° e+
Z t an RissS4K Cma0ot CrB0l B 5 a 3 ear ~ Sic el at," oecnac
sae eS ier ae acl ames RCT bees s — yy = :
-
;
ee
&
:
4
@
z
S|
Fe
tt
zt
‘6 = ;
MAISO
is
as]
37
{e
¥
°
|g
ee
=|
18
3
'
3]
=
é
2
2
(
@)
9
T
fe
a3
hw
Qa03
2
SWICHING ' 9 | oe WAG Deo" and. j iS 2 (2) DON nH | 2 27 Te 5
em)
er
oe
Ais
3
$
8
3
o}
2
2A
|S
==
tee
TI
Rq0s33k
&
‘I s 9 3k fi
avi)
&
=
i)
+
4
@
Dorr
“Ge
[FL
v
:
.
'
Cre 2 % xe8 5 (5) Sy 0.08y by, Rad E26 ae
oy
eis
;
i
s
omy
GE
Et
‘
%
g
S2-4
Sa-z2
S34
S3-2
é
go
x
cov
3
g
%
a
ees
ees
wz
%
8
223
Raw
68K
4
[fos
£ / RR GAIN CAL COUNTER OISPLAY Sw BRO GW BAO PITCH 572 & = Cee
&
4
GN)
.
es
=
ae
F
ali
2 / Qo01.s02 (Can: = 5 2 Kage k
=. IQ {00
2801047
RVITD6101P-1
z
‘
Gd
COUNTER
PRE
AMP
DIVIDER
RaasioK
BS
yy 2 a“
F QY 8 °
f i a. S o ou]
/ =! st a Taavl s av
\
J
Cif
KI2Py
ab
a
fee
=
dav]
AV
f
& 3 a Pcqoe 0.0%, 7 8 |
: &
°
04
i
T35vi fa QQ
é in — a s3 Msc e@ z| |
:
95
S
ro
Tes
2
!
AN7212
¥
S
z
5
19)
wl
SJ
33
¥>
x
aus
t
;
SW
Ist
L.OSC
&
MIX
&
5
2
<0.53V9)
2
23
<
g
1 t L.W/MW L.,OSC z 5 cel & a 25) $2
i
:
29
&
8
=
2
gt?
|
a
L
a
t
:
t ) 2 ® Lo i os
| 3 g ar ge 3 Ox Tet Toss
{
=
2
od
|
8
EY
cs
5S
'
é x = 2 S @® reed a
H 3 z 2 Sa 3 S4
B 3 ; Qsa7.998
' . Qses 5
; 9SC828 28A383 : afc
SUP BIBZA = Soe oes eee SWITCHING ROUNTERCAME ayes Vee ;
ae em ORR Et | ae tt cc,
SAG
$3
oa
ic
9
XCqoI
ve
T
£§
Ly
ri
SWITCHING = Taos RVIM54829P
ae COUNTER LSI
‘oe — 7 eee oy ane REES: A erie, aeeeemeescnaaniieeie in seneenshitemees
JO1183_522 104 514 10) 108 111119 44 195.12. 46. Ho 409. 197,118. 117.422.124.125 129,126 128 124 1301729 185 134 186 191 132. 133.192 195. S01. 1345°4435.505. 509.136 139.138. 14.2.139,147, 140.143. 145. 144 46, 510.149. 148, 152. 151,153, 150, 154:85, 156, 157, 201, 158 623 91396 56 160 205.202. 203 204 206, 207 209, 210,214,212, 214-218. 216.217. 218 219.5
169 163.162 164 163169 12 S2HTIZ ATSB IA TSG 9B. SIE, 3 -180.182.199,.516-18t 183 T4145 484 $65 190.197 796. B17. 199. 502 230498 604.507 HOBSID 4902, Got 904 14.7 93 Fob. 908 412 970, 14 169 "8 915 735 923 924 927 $20.239.227 933 422 932 931 227.208 213 401,405,402 403 40d" 405, ot 925
jet 402 108.404. 105.10%, tog, 196 109 110114. 149.195. HUB. 117 18 119021.120 122123 | 124 186.125.126.202127.128.__ 130.132. 133. 134.131 135 136.137.138.130. 140. 14-3,206 159) 97 208,210,236. 239 212.213 215 246,214, 21), 221-218,222,225.228,226, 237 235 234 931 te
45 144 446 aH 148.155 YZ 450 151,152,153, 154 158 203 907.402 Jot 927.928 24.0 205 412 919.914.134. 913.916.915 933 231 214 903,220,905,932, 224 229 231934 931, 924. 928 22. Fat $20 919.928

Circuit Board Wiring View—-Model RF-2800LBS
L >
L2
EP—O OO
| ewe EXT ANT
____—_, TERMIN,
LW ANTENNA COIL AM ANTENNA COIL
Cn) mn
Lio2
SS ee SOS RF,
i}
1
{
|
1
|
{
! INDICATOR
{
a
_ aT
SS
MPX OUT JACK EP/EXT SP JACK
DIN
!
REC se aan
JACK rae BE
J} =o
RADIOS HON ex ch ge (OGM (A-YPM DYNAMIC
Sa SPEAKER
S92
Qdalé]
Qus
Dior
Jor
‘Wir
Iew2
Digg
Dice
Quo
Qua
Gio?
O13
G93
Digi
Grog.
Dts
Tao
10103
Dios
@iog_Qt09
Dao:
Dagp
Dao3
Dans
D203
Gag
1Con2
Doo2
D903
Qrn1
Door
Q203
03
Q¢08
S07
Gong
Qeps
Qza6
———
Tall
Toot
Tez
Log.
Lig
_Lio2
Tyeple
Lig
Lio?
Lod
—
Lios
Lis
Lug
Ligthy
Lins
L920
Lior
Li13
TiogL
jog
Taor
Lint
Looe
Lig
TrosLgTiog
Lig
Lins
Laon
Wot
L9oz
Tzo1
L901
T202
RF-2800LBs (10,

lo esusduoeg sinjereduay, ‘IOS TWIat
oos LYY
|
Yu3aldiloay
<< KK OK
(2)
Annas
Jatj1700y (IS) epold
Joyengey
‘(1g)
spold
Jozyesusduoey
uolzyeLedg
(Tg)
apoTd
Joye
mnsey
(Ig)
epolg
JozeTNsay
(IG)
epolg
ZLLWS
ge0¢
ZNGAY
O@OTAMCAY |
LEOTOVOACAY
POP
SOF
ZOF'
LOPG
|
sora
zoza
Towa
sOTG
RF-2800LBs_ 11
P60Z
MQAH
|
206206
LOLWW
|90T'SOT'SOTG
i
WET)
JatJIJOOY
‘BUIYOIUaS
(1g)
epoid
TorwWoD
YoU
Pad
ww
Fig. 29
< KK KK OK OK OK
~ <
AAA AA ANY
NH
re}
Oud
dep
Iequneg
‘OW
V
(1S)
epold
BUIYOIAS
(9D)
JOYS
sue
Ly,
‘dury Iek0g ‘I0veTTI9sQ (1g) osisuely ‘duy dv‘(ig) lojstsue1y ‘duy av (ep) 1loystsuely IOPETNGay ‘(aH) IOpStsueLy,
Joye
INday
(1G)
IOJstsueLy,
JoyETNZay
(1S)
IOJStsuely,
‘duy
wy‘
duy
aig
‘to1ju09
utepy q@y"duy Jeep (Ig) 1osTsueIL,
SUIGO}AG
(1G)
JOYS
IsUP
IL
2s
‘day
JeyuNog
‘BuTyoyAS
‘XTW‘JOVTITISO
WI
‘(eD)
loys
tsueLy,
‘duy eid
Je}UN0D
“duy
Jejjng‘(Ig)
oy
tsueL],
‘day
2
WuaA'(1S)
Joys
tsuely,
IST JeyuNED ‘OT
Japtatq'Ol
ELLGSGAY
pocvse
Tooeose
B9STOSe
|
CLTaSe
yrsase
L9SaSe |
FOTHS?
|
SP6OSS
Besose
BeeVvVSe
4v0TOS2
6FUSS
dA628PSWIAU
|
T-dTOTSALIAY
|
POT ZOT TOTA
¥06'SO060
S06
LO0%'90%
Goze
Zoze
TO%
B0T®
$07
SO? 60T'LOTO
906'90TO
806406
SOT
FOT'SOTO
206'TO6'ZOTO
TOTO
20601
TO6OI
JOVETITOSO"'T
AW/M'T
XT
IOVETIIOSO"'T
IST
MS‘OL
1019818d
ASS
‘WV
10199}90/H1I
Wa
OI
‘duy
JI
WV/Wa'OI
eTCLNv
TICLNV
OTCLNV
SOTOr
eOTtor
TOTOI
S3G0i0
GNV
SHOLSISNVUL
‘SLINOWID
GALVYOSINI
uotjdizoseq
7
ameN
yied
‘ON
ed
‘ATUO
YUeTd
ButmMyoerjnuen
oy}
Aq
pas
st
yIeW
O
9UL'S
‘gs
yied
uorjonpoid
WO
Jejjtp
Aem
pure
sjred
piepuejs
eolAles
ale
$1a}}aT
Plog
UT
UMOYS
SIEqUMU
jIed
>
‘sjied
patjioeds
s,reinjoejnuem
ATuo
asn
sjueuodmos
aseq}
jo
Aue
Sutoetdes
wey
M
‘Kyayes
Joy
jUeyIodut
ostiejyoereyo
Tejoeds
aaey
vaie
pepeys
Aq
patjruept
sjueuodu0g’¢
‘Aresseoau
ssat
are
sjied
yuel
Z
“gpeeu
ITeder
Jo
%G6
JaA00
[ITH
S}ied
YURI
A+X
“speeu
ITedez
Jo
%0g
Iea0o
[[t#
S}ied
Yue
KX:
HUeI
Z—X'S
“‘siepio
syed
Ioj
Iaqunu
jIed
sty}
asn
eseatq
‘syed
[eoTueyoow
{sou
UO
pe}eoTPUT
ere
SIeqUMU
JIed'T
:SALON
(6vSi-£082.dy)
S81008Z-4Y
IOPOW
+++++---++LSIT
SLYVd
LNSWSOV
1dSu
@ CABINET PARTS LOCATION

Part No. Part Name & Description e8 Remarks Part No. Part Name & Description mouarks
a
CERAMIC
FILTERS,
COILS
AND
TRANSFORMERS
;
SPEAKER
CF101,102,
|
RVFCF10S12FR
Ceramic
Filter
EAS10P57SC
Speaker,
Imp.329,10cm(4”),
103
PM
Dynamic
CF104
RVFLFB6A
Ceramic
Filter
aioe
CF105 RVFBFB455C2 Ceramic Filter
RLF6F20 Antenna Coil, MW, LW
RLD4M9 Tuning Coil, FM
RLO4N105 Oscillator Coil, FM
RLO9M10 IFT,AM lst IF
RLD?7M3 Antenna Coil,SW3
RLA3M30 Antenna Coil, SW2
RLA3M40 Antenna Coil,SW1
RLD4M5 Oscillator Coil,SW3
RLO3M49 Oscillator Coil, SwW2
RLO3SM48 Oscillator Coil,SW1
RLO2M14 Oscillator Coil,MW
RLO1M8 Oscillator Coil, LW
RLO9M9 Oscillator Coil,BFO
RLI2M212 IFT,AM 2nd IF
RLI2M205 IFT,AM 2nd IF
RLI4M101 IFT, FM
RLI2M204 IFT,AM 2nd IF
RLI9SM3 IFT,AM lst IF
RLIOM4 IFT,AM lst IF
RLT3F30 Input Transformer,P=7000:S=1KQ
RLT2H28 Output Transformer,P=459:S=80
RLT9E2 ; Power Transformer,Time Display
‘|RLT5K118 Power Transformer : 0) 47%!"
$910082-4u (Zt!
w
SWITCHES
S1-1~S1-10 | RSR6J012Z-H Switch, Band
$2-1,82-2 RSS69Z-M Swi tch, Digital Display
83-1,83-2 RSS2B03Z-H Switch, BFO
S4-1,85,S6 | RSTXOO3Y-A Switch, Band Width, Power, Light
Ss? RSS2B02Z-H Switch, Phono/Radio
S8 RSR2A01Z-H - Switch, Voltage Selector
RESISTORS
N
R113,119,121} ERD25TJ470 470, Watt, +5%, Carbon
123,132
R239,145 ERD25TJ101 1002, M%Watt,+5%, Carbon
R118,147,150} ERD25TJ221 2200, Watt, +5%, Carbon
R153 ERD25TJ331 3300, Watt, +5%, Carbon
R109,225 ERD25TJ471 4700, “Watt, +5%, Carbon
R124,208 ERD25TJ681 6800, Watt, +5%, Carbon
154
R107,103,104}
ERD25TJ102
1KQ,
Watt,
+5%,
Carbon
111,140,240
§14 :
R131,148 ERD25TJ152 1.5KQ, “Watt, +5%, Carbon
R120,128,205| ERD25TJ222 2.2K, “Watt, +5%, Carbon
VARIABLE RESISTORS 211,932
—
R149,905
ERD25TJ332
3.3KQ,
“Watt,
+5%,
Carbon
VR201,205,
|EVHOXAF15A54
Variable
Resistor,50K0
(A),RF
Gain,
R102,106,110]
ERD25TJ472
4.7KO,
“Watt,
+5%,
Carbon
206
Treble,
Volume
127,224
VR202,203,
|
EVHOXAF15B54
Variable
Resistor,50KQ
(B),SW
Cal,
R114,126,134|
ERD25TJ103
10KQ,
%Watt,
+5%,
Carbon
204
BFO
Pitch,
Bass
139,231
VR101
EVLT4A
A00B54
Preset
,50KQ
(B),Meter
R143,221
ERD25TJ333
33KQ,
“Watt,
+5%,
Carbon
1
R122
ERD25TJ473
47KQ,
“Watt,
+5%,
Carbon
VARIABLE
CAPACITORS
R101,105,112|
ERD25TJ104
100K,
“Watt,
+5%,
Carbon
136,226,228
CV101,102,
PVC22K20T5L
Tuning
Capacitor,
W/Trimmer
R115,117,137]
ERD25TJ224
220KO,
4Watt,
+5%,
Carbon
103,104
Capacitor
(CT102,103,104,110)
210,237
CT107,111
RCV1PX10AGS
Trimmer
Capacitor
R116,212,234)
ERD25TJ334
330KQ,
%Watt,
+5%,
Carbon
CT101
RCV1PX15AGS
Trimmer
Capacitor
R1,108,156
ERD25TJ474
470K,
“Watt,
+5%,
Carbon
CT112
RCV1LPX20AGS
Trimmer
Capacitor
R133
ERD25TJ273
27KQ,
‘Watt,
+5%,
Carbon
CT105,106,
|
RCV1PX30AGS
Trimmer
Capacitor
R146
ERD25TJ220
22KQ,
'4Watt,
+5%,
Carbon
108,109
:
R151,909
ERD25TJ122
1.2KQ,
“Watt,
+5%,
Carbon
R130,155
ERD25TJ392
3.9K,
Watt,
5%,
Carbon
R138,236
ERD25TJ683
68K,
%Watt,+5%,
Carbon
COMPONENT
COMBINATION
AND
CRYSTAL
R206,218,220)
ERD25TJ682
l4Watt,
=5%.
Carbon
O34
RXABPMFL
Component
Combination
R216,143
ERD25TJ153
}4Watt,
£5%,
Carbon
RVCXSL20NSD,
Crystal
R213,235
ERD25TJ470
Watt,
+5%,
Carbon
R202,229
ERD25TJ333
iaWatt,
5%,
Carbon
R135,234
ERD25TJ154
YaWatt,
+5%,
Carbon
HEE EE EP PPE BBR ee
N NNNNWN
SK KOK OK OK OK OK OK OK
[oMe)
Or Dd
a
N
PWKYDHEH AOI NNNNNNNWN
yn nwwW NNNN

ig}| Saoog2-au
Part No.
Part Name & Description
R902,911,915
R901
R916,918,919
920,921,922
925,926,927
928,929,930
C177,118
C1,.113,166,
179
Ci01,111,161
170
C163
C162
C146,502
C161,172,511
Cll?
C517
C107,115.116
152,207,326
507
C109,.112,120
128.134.1387
154,168,169
174,402,403
404,405,504
C126,133,173
158,175,180
182,201,205
225,920,021
ERD25TJ124
ERD25TJ100
ERD25TJ471
ERD25TJ680
ERD25TJ272
ERX1ANJ1RO
RRD18XK680
RRD18XK331
RRD18XK681
RRD18XK102
RRD18XK222
RRD18XK682
RRD18XK103
RRD18XK223
RRD18XK104
RRD18XK154
RRD18XK224
ERD25TJ330
ERD25TJ151
ERD25TJ223
ERD25TJ123
ECCD1HO10C
ECCD1H040C
ECCD1H1i00KC
ECCD1H120KC
ECCD1H150KC
ECCD1H180KC
ECCD1H270KC
ECCD1H101K
ECCD1H1RSC
ECCD1H330KC
ECCD1H390KC
ECCD1H330KU
ECCD1H220KxX
BECCD1H100KX
ECCD1HO70DW
ECKD1H102MD
ECKD1H103PF
ECKD1H103MD
1680,
13300,
'g80n,
1KQ,
120KQ, !aWatt.
100, d4aWatt,
4700, M%Watt,
680, },Watt,
2.7K, “Watt,
1Q, 1Watt,
tgWatt,
1, Watt,
1, Watt,
yaWatt,
2.2K, }sWatt,
6.8KQ, Watt,
10K, ‘Watt,
22K, Watt,
100KQ, Watt,
150KQ, Watt,
220KQ, ',Waitt,
330, = l4Watt,
1509, Watt,
22K, Watt,
12KQ, ‘Watt,
+5%,
+5%,
+5%,
+5%,
+5%,
+5%,
+10%,
+10%,
+10%,
+10%,
+10%,
+10%,
+10%,
+10%,
+10%,
CAPACITORS
Carbon
Carbon
Carbon
Carbon
Carbon
Metal
Chip
Chip
Chip
Chip
Chip
Chip
Chip
Chip
Chip
Chip
Chip
Carbon
Carbon
Carbon
Carbon
5OWV,+0.25PF,Ceramic
50WV,+0.25PF\Ceramic
50WV,+ 10%,
SOWV,
=10%,
50WV,= 10%,
5OWV, = 10%,
5owvy,
+10%,
5OWV,= 10%,
5OWV,+0.25PF Ceramic
50WV,+ 10%,
50WV,+ 10%,
50WV,+ 10%,
5OWV,+ 10%,
5OWV,= 10%,
50WV,=0.5PF, Ceramic
5OWV,= 20%,
SOWV,—209%,
5OWV,= 20%,
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
“Ceramic
Ceramic
Ceramic
RRO YEE EPP RP EXE
Poe
we
OH PHP RPE HE ONDE
NNNNNNNNNNNNNNN
N
(ome)
NNNNNNNNNNNWN
Part No.
Part Name & Description
Remarks
139,149,150
127,132,141
144,183,184
C138,143,211
215
C212,218,232
C217,219,221
203,204,214
C136,910,916
C130,135,140
178
C147,167,171
181
C110,905,209
C216,911
C206,208,231.
903,908,914
C912,915,918
921,923,924
C932,934,933
C935
ECKD1H223PF
ECKD1H102PF
ECKD1H222MD
ECKD1H153MD
ECKD1H223MD
ECKD1H332MD
BCFVD333MD
ECFVD473MD
ECF VD683MD
ECFVD103MD
ECF VD223MD
ECMS05101JH
ECMS05121JH
ECMS05680JH
ECQS0536132Z
ECQS05102KZ
ECQS05182KZ,
BCQS05432I2
ECQG05683MZ
ECEA1AS101
ECEA1AS470
ECEA1AS221
ECEAOJS471
ECEA1CS330
ECEA1HS100
ECEA2AS2R2
ECEA2AS3R3
ECEA2AS010
ECEA1HS102
ECEA1CS100
ECEAOJS102
ECEA1JS4R7
ECEA1VS330
ECQS05271IZ
ECUX1H330KC
ECUX1H680KC
BCUX1H101KD
ECUX1Hi022F
ECUX1H2232F
ECUX1IH223MD
ECUX1H333ZF
ECCD1HO50CC
ECCD1H470KC
ECCD1H680K
ECQS056813Z
BCKD1H471KB
ECFVD1O04MD
oa eae
0.022uF, 50WV,+2°8%,
0.002uF, 50WV,+2°S%,
0.0022 uF, 50WV,+ 20%,
0.0154F, SOWV,+ 20%,
0.022 uF, SOWV,+ 20%,
0.0033 uF, 50WV,+ 20%,
0.033uF, 25WV,=20%,
0.047 2F, 25WV,+20%,
0.068uF, 25WV,t20%,
0.01 uF,
100PF,
120PF,
68PF,
360PF,
1000PF,
1800PF,
4300PF,
100uF,
47yuF,
220uF,
LOWY,
10WV,
10WV,
470uF, 6.3WV,
33uF, 16WV,
10uF, — SOWV,
2.2uF, 100WV,
3.3uF, 100WV,
uF, = 100WV,
1000uF, SOWV,
10uF, 16WV,
1000uF, 6.3WV,
4.7uF, 6.3WV,
23uF, 35WV,
270PF,
33PF,
68PF,
100PF,
0.0334F, SOWV,+88%,
50WV,= 0.25PF,Ceramic
5OWV,+ 10%,
5OWV,+10%,
5OWV,+ 5%,
5OWV,= 10%,
25 WV,= 20%,
5PF,
47PF,
68PF,
680PF,
470PF,
0.1 uF,
25WV,+ 20%,
O.022yuF, 25WV,+ 20%,
SOWV,+5%,
50WV,+5%,
B5OWV, + 5%,
5OWV, + 5%,
5OWV,+ 10%,
50WV,+ 10%,
5OWV,+5%,
0.068uF, 50WV,+ 20%,
SOWV,+5%,
SOWV,+ 10%,
5OWV,+10%,
SOWV,+ 10%,
0.001 pF, S5OWV,+89%,
0.022uF, 5OWV,+89%,
0.022uF, 50WV,+ 20%.
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
Semi-Conductor
Seni-Conductor
Seni-Conductor
Semi-Conductor
Semi-Conductor
Mica
Mica
Mica
Styrol
Styrol
Styrol
Styrol
Styrol
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Blectrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Electrolytic
Styrol
Chip
Chip
Chip
Chip
Chip
Chip
Chip
Ceramic
Ceramic
Styrol
Ceramic
Semi-Conductor
BH
OAndNEPHEPEPPHDHE PO
Po
»
DORE HEHEHE HENNOD OI
PORPRPNHND
<<<NNNNNNNN NN
NN
NN
<<
<
NNNNNNN<<<<<<<<
NNNNNNN