Pioneer F-9 User manual

()
PIONEER
ORDER NO.
ART-611-0
FM/AM
DIGITAL
SYNTHESIZED
TUNER
--9
MODEL
F-9
COMES
IN
SIX
VERSIONS
DISTINGUISHED
AS
FOLLOWS:
Voltage
Remarks
120V
only
U.S.A.
model
110V,
120V,
220V
and
240V
(Switchable)
General
export
model
110V,
120V,
220V
and
240V
(Switchable)
U.S.
Military
model
220V
and
240V
(Switchable)
Europe
model
220V
and
240V
(Switchable)
United
Kingdom
model
120V
only
Canada
model
e
This
service
manual
is
applicable
to
the
KU
type.
When
repairing
the
HE,
HB
types,
please
see
the
additional
service
manual
(ART-613),
and
see
the
ART-614
for
S,
S/G
types
and
ART-612
for
KC
type.
e
Ce
manuel
d’instruction
se
refére
au
mode
de
réglage,
en
francais.
e
Este
manual
de
servicio
trata
del
método
de
ajuste
escrito
en
espafiol.
CONTENTS
1.
SPECIFICATIONS
................04..
2
8.
SCHEMATIC
DIAGRAM................
15
2.
FRONT
PANEL
FACILITIES.............
2
9.
ELECTRICAL
PARTS
LIST..............
18
3.
BLOCK
DIAGRAM
...............-.5.
4
10.
EXPLODED
VIEW
................00
21
4.
CIRCUIT
DESCRIPTIONS.
..............
5
11.
ADJUSTMENTS
...........
0.000.000
23
B.
PRORING
.iickace
cidecksdaencaeeaes
10
MEGLAGE
«oui
ib
euesas
ndecn
ec
epnens
26
6.
PARTSLOCATION
..........
aan
ha
oes
10
ANIGTE
cc
ane
cs
keys
s
eh
eewn
ey
Rew
ene
29
7.
P.C.
BOARDS
CONNECTION
DIAGRAM
....
12
PIONEER
ELECTRONIC
CORPORATION
2-1.
Meguro
1-Chome,
Meguro-ku,
Tokyo
153,
Japan
U.S.
PIONEER
ELECTRONICS
CORPORATION
&5
Oxford
Drive,
Moonachie,
New
Jersey
07074,
U.S.A.
PIONEER
ELECTRONIC
(EUROPE)
N.V.
Luithagen-Haven
9,
2030
Antwerp,
Belgium
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-184
Boundary
Road,
Braeside,
Victoria
3195,
Australia
FL© DEC. 1980 Printed in Japan

1. SPECIFICATIONS
FM Tuner Section
Usable Sensitivity ...........cccceeeeeees Mono; 10.8 dBf (0.95 pV)
50 dB Quieting Sensitivity ............... Mono; 15 dBf (1.55 nV)
Stereo; 37 dBf (19.5 pV)
Signal-to-Noise Ratio .............00.08 Mono; 90 dB (at 85 dBf)
Stereo; 85 dB (at 85 dBf)
Distortion (at 85 dBf) WIDE NARROW
MONG tected icccaneiaees woweceed 100 Hz; 0.03% _
1 kHz; 0.03% 0.05%
10 kHz; 0.03% _
STOlOG canciiccesasavgcedtehen owns 100 Hz; 0.05% —
1 kHz; 0.05% 0.5%
10 kHz; 0.1% —
Capture Ratio ...........cceseeeeeeneee ees vee. 1.0dB 2.5 dB
Alternate Channel
Selectivity .........cc:cceeeeeeeeee 400 kHz; 40 dB 85 dB
. 300 kHz; — 60 dB
Stereo Separation ..............065 1kHz; 55 dB 40 dB
50 Hz to 10 kHz; 48 dB —
Frequency ReSponse ..........csceeeseeeeees 20 Hz to 15 kHz*?2 dB
Spurious Response Ratio ...........cccccseeeeeeseeenaeeeeeeees 80 dB
Image Response Ratio ...........ccecceseeeeeeeeeteeeeeeeeenenes 70 dB
IF Response Ratio -.cv.vcsecinet aries icecataisacesseutensas 100 dB
AM Suppression Ratio ...........:ccceeeeceeeeeeeenenereneneeees 65 dB
Subcarrier Product Ratio .............:cseeeeee ences eneeeeenees 70 dB
SCA: Rejection: Ratio sxccwwessiesasieavinas seecde cdaceceerediviiers 65 dB
Muting Threshold ............:cccceceeeeeeeeeeeeeeees 25.2 dBf (5 pV)
Antenna Input ....... 300 ohms balanced, 75 ohms unbalanced
AM Tuner Section
Sensitivity
IFFF, Ferrite ANtenNa wiewiteincraesa gasses vee eeecwsa we 300 uV/m
IHF, external antenna ...........:cceeeeeee sete eee eeereeeeaes 15 uV
SGIOCHIVIEY. sassdantacetsatevadieceend ite cxsewansesan tends 10 dB (WIDE)
50 dB (NARROW)
Signal-to-Noise Ratio ..........ccceseeeeeee eee eee eeeeneeeeees 50 dB
Image Response Ratio ..........cccesereceeeeeeeeeeeneeeenereees 60 dB
IF Response Ratio ............cecceesceasecescnseeneesenatsanenens 80 dB
ANTONIN :issised sa cedes is iecueenns Built-in ferrite loopstick antenna
Audio Section
FM (100% MOD) .........cceeeeeeeeeeeeeeees FIXED 650 mV/1.1 k@
AM (30% MOD) .......sccceseeseserececcees FIXED 200 mV/1.1 k&2
Miscellaneous
Power Requirements ........::ccseseeseeeeeeeeneeneeees 120 V, 60 Hz
Power Consumption ..........-.:ecseeeeees 17 W (UL) 17 W (CSA)
Dimensions ...........cceeeeeneeeees 420 (W) x 60 (H) x 380 (D) mm
16-1/2 (W) x 2-3/8 (H) x 15 (D) in
Weight (without package) ...........:scceeeeeeee 4.5 kg (9 Ib 15 oz)
Furnished Parts
FM T-type Antenna .........ececeee eset ee eeeeeeeeeneeeeeaenenneneoans 1
Connection Cord with Pin PIUGS ........:.::eeeeeeeeeeeeeeeereteeees 1
F-type PlUG ......ccccscececssscecrscsensennsrevscseescestaearaceoeeresnes 1
Operating
INStructioNS
..........cccceceeeeee
ee
ee
eee
ee
tena
en
tn
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1
NOTE:
Specifications
and
design
subject
to
possible
modification
without
notice.
2. FRONT PANEL FACILITIES

@) DOOR
This
opens
when
the
top
is
pulled
toward
you.
Keep
it
closed
unless
operating
the
switches
inside.
(@)
RECORDING
LEVEL
CHECK
SWITCH
(REC
LEVEL
CHECK)
When
this
switch
is
set
to
ON,
a
reference
level
signal
(330
Hz,
FM
50%
modulation)
for
FM
recording
is
continuously
fed
out
from
the
OUTPUT
terminals.
For
receiving
ordinary
FM
or
AM
broadcasts,
this
switch
is
set
to
OFF.
(3)
IF
BANDWIDTH
SELECTOR
SWITCH
(IF
BAND)
This
switch
is
used
to
select
the
pass
band
of
the
intermediate
fre-
quency
signal
when
a
broadcast
is
being
received.
Depress
FM
for
FM
reception
and
AM
for
AM
reception.
NARROW:
Set
to
this
position
when
interference
results
from
neighboring
stations
and
this
impairs
your
capacity
to
listen
to
the
program.
This
will
improve
the
selectivity
and
permit
interference-free
reception.
WIDE:
Set
to
this
position
in
areas
with
a
strong
electrical
field.
This
will
reduce
the
distortion
and
improve
the
quality
of
the
reproduced
sound.
4@)
MODE
SWITCH
(MODE)
The
MONO
mode
is
set
at
the
“‘in’”’
position
and
the
AUTO
mode
is
set
at
the
“out’’
position.
AUTO:
Set
here
to
listen
to
FM
broadcasts
in
stereo.
With
FM
monaural
broadcasts,
reception
is
automatically
set
to
mono.
MONO:
Set
here
when
listening
to
FM
broadcasts
in
mono.
Listen
at
this
position
if
the
noise
is
too
great
at
the
AUTO
position
or
if
you
are
in
an
area
where
the
signals
are
weak.
)
TUNING
SWITCHES
(TUNING)
These
are
used
to
tune
in
stations.
The
reception
frequency
in-
creases
when
the
UP
switch
is
depressed
while
it
decreases
when
the
DOWN
switch
is
depressed.
NOTES:
The
tuning
mode
changes
as
follows
in
accordance
with
the
posi-
tion of the TUNING MODE switch.
¢
AUTO
position:
When
the
TUNING
switches
are
givena
light
touch,
the
tuning
operation
continues
until
a
broad-
casting
station
is
picked
up.
When
the
numbers
on
the
frequency
display
reach
either
the
top
limit
(for
instance,
108.00
MHz
with
the
FM
band)
or
the
bottom
limit
(for
in-
stance,
87.50
MHz
with
the
FM
band),
tuning
switches
automatically
to
the
other
end
of
the
frequency
spec-
trum
and
the
same
operation
continues
until
a
station
is
picked
up.
*°
MANUAL
position:
When
the
TUNING
switches
are
depressed,
tuning
is
conducted
in
steps
(0.05
MHz
or
0.1
MHz
for
FM
and
9
kHz
or
10
kHz
for
AM),
and
the
tuning
Operation
stops
as
soon
as
either
switch
is
released.
When
the
numbers
on
the
frequency
display
reach
either
the
top
or
bottom
limit,
tuning
stops.
In
this
case,
to
continue
tuning
depress
the
other
TUNING
switch.
()
MEMORY
SWITCH
(MEMORY)
This
is
used
to
store
(or
memorize)
the
stations
in
the
STATION
CALL
switches
[1]
through
[6].
@
TUNING
MODE
SWITCH
(TUNING
MODE)
This
is
used
to
select
auto
or
manual
tuning:
manual
at
the
“‘in’’
position
and
auto
at
the
“out”
position.
In
the
AUTO
mode,
the
tuning
operation
is
conducted
automatically
with
the
TUNING
switches
until
a
broadcasting
station
is
picked
up.
In
the
MANUAL
mode,
tuning
is
performed
only
as
long
as
the
TUNING
switches
are
depressed
regardless
of
the
broadcasting
sta-
tions.
As
soon
as
these
switchs
are
released,
the
tuning
operation
stops.
(8) POWER SWITCH (POWER)
When this switch is set to the ON position, power is supplied to the
tuner’s main circuits. The unit’s power switch is geared to selecting
the
transformer’s
secondary
and
so
even
at
the
STAND-BY
posi-
tion,
the
unit's
circuitry
will
work
as
long
as
the
power
cord
is
con-
nected to the power outlet.
Disconnect
the
power
cord
from
the
power
outlet
when
you
do
not
plan
to
use
the
unit
for
a
long
period
of
time.
@)
IF
WIDE
INDICATOR
(IF
WIDE)
This
lights
IF
bandwidth
selector
switch
has
been
set
to
the
WIDE
position.
SIGNAL
INDICATOR
(SIGNAL)
This
indicates
the
strength
of
the
incoming
signals
with
five
light-
emitting
diodes
(LEDs).
d)
STEREO
INDICATOR
(STEREO)
This
lights
during
FM
stereo
reception.
NOTE:
This
indicator
does
not
light
when
the
mode
switch
is
set
to
the
MONO position.
(2
MULTIPATH
INDICATOR
(MULTIPATH)
This
lights
as
soon
as
the
multipath
effect
is
detected
during
FM
reception.
When
installng
the
FM
antenna,
adjust
the
direction
and
height
of
the
antenna
so
that
this
indicator
will
not
light.
(3)
FM/AM
INDICATORS
(>
FM;
>
AM)
The
FM
indicator
(>>)
lights
when
the
FM
function
switch
is
depressed;
the
AM
indicator
([>)
lights
when
the
AM
function
switch
is
depressed.
These
indicators
wink
for
about
10
seconds
when
the
MEMORY
switch
has
been
depressed
and
while
they
are
winking
they
indicate
that
it
is
possible
to
memorize
a
station.
FREQUENCY DISPLAY
This
indicates
the
frequency
of
the
tuned-in
station.
The
units
are
read
out
in
MHz
for
FM
and
kHz
for
AM.
()
FUNCTION
SWITCHES
(FM,
AM)
FM:
Depress
this
switch
for
FM
reception.
AM:
Depress
this
switch
for
AM
reception.
STATION
CALL
SWITCHES
(STATION
CALL)
When
the
frequency
of
a
broadcasting
station
has
been
programm-
ed
(memorized),
depress
the
corresponding
switch
to
recall
that
sta-
tion.
(2
STATION
INDICATORS
(STATION)
When
a
STATION
CALL
switch
has
been
depressed,
the
indicator
corresponding
to
the
same
number
lights.
The
top
row
is
for
FM
reception
and
the
bottom
row
for
AM
reception.

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4.
CIRCUIT
DESCRIPTIONS
This circuit description is a brief summary of the
circuitry depicted in the block diagram on page 4.
For more complete details, please refer to the
block diagram.
4.1 MAJOR FUNCTIONS
The F-9 is a PLL digital synthesized tuner re-
ferenced to a crystal oscillator. Its main functions
are as follows:
1. Frequency Range
When the AM CHANNEL STEP switch is set
to the 10kHz position.
AM: 520kHz to 1610kHz in 10kHz step.
FM: 87.5MHz to 108.0MHz in 100kHz step.
When the AM CHANNEL STEP switch is set to
the 9kHz position.
AM: 522kHz to 1602kHz in 9kHz step.
FM: 87.5MHz to 108.0MHz in 50kHz step.
2. Tuning
e Tuning is by an UP or DOWN key. Pressing the
key once changes frequency 1 step (9kHz or
10kHz in the AM band, 50kHz or 100kHz in
the FM band). Holding the UP or DOWN key
depressed causes the frequency bands to be scan-
ned.
e Positioning the TUNING MODE switch to
AUTO and pressing the UP or DOWN key once
causes the unit to go into the auto search tuning
mode. In this mode, the unit automatically
scans the frequency band, with scan stopping
at, and tuning into any broadcast station trans-
mitting a signal exceeding a prescribed level of
strength.
@ Pressing the STATION CALL key causes the
unit to directly tune to a frequency preset into
the unit.
3. Memory
e Up to 6 FM and 6 AM frequencies can be preset
into the memory.
e A special memory holds the frequency of the
station tuned at the time the power supply is
cut OFF. When power is restored to the unit,
tuning is automatically made to that station.
4. Indicators
e
Frequency
is
displayed
by
a
7-segment
LED
numeric
display.
Five
digits
are
used
for
FM
tuning
and
four
digits
for
AM
tuning.
e
Signal
strength
is
indicated
by
a
LED
5-point
indicator.
e FM and AM band indicator.
e
A
flashing
band
indicator
indicates
that
the
unit
is
in
“memory
write’’
(preset)
status.
e
STATION
indicators
(memory
address).
@ FM STEREO reception indicator.
4.2 FM TUNER SECTION
FM Front End
The RF amp uses two newly developed D-MOS
FETs with improved high-input characteristics,
improving both intermodulation interference
elimination and sensitivity. These FETs operate in
a negative-phase mode, and are coupled in a push-
pull configuration.
The mixer also uses a newly developed circuit
with excellent RF mutual modulation charac-
teristic, and a double balanced mixer with an
FET constant-current buffer.
The tuning circuit consists of four twin-type
varicap diodes, also with superior high-input
characteristics. This circuit and component
combination gives the F-9 interference elimination
performance comparable to that of a variable
capacitor type tuner, and attains particularly
excellent RF intermodulation characteristics.
FM IF Amplifier
The FM IF circuit may be switched between a
WIDE and NARROW band range. In the WIDE
mode, better sound quality is attained, and the
NARROW mode features better station selectivity.
Two ceramic filters with superior group delay
_ frequency characteristics are used in the circuit
during WIDE mode operations, and two narrow
band ceramic filters are inserted between the WIDE
stages during NARROW mode operations. Darling-
ton differential limiter ICs are used between stages,
and the final stage uses an IF system IC (PA3007).
PA38007 not only features better characteristics
than previous IF system ICs, but also has a built-
in noise muting (anti-hum) circuit. In the F-9,
only the IF limiter amp section of this IC is used
in the signal path, with the built-in FM detector
being placed in the control circuit.
Detection Circuit
The F-9 uses the digital method of detection.
The 10.7MHz IF signal is input into the convertor
IC (PA5001). PA5001 includes a push-pull local
oscillator circuit and a linear-multiplier mixer
serving to beat down the 9.44MHz local signal to
1.26MHz. FM detection is performed on the no.2
IF signal (1.26MHz) by the digital detector IC
(PA5002).
Since the FM signal is an inconsistent wave, it
can be demodulated after being converted to a
DC level. The IF signal is converted to a trigger
pulse by the differential circuit, and this pulse is
used to trigger the astable multivibrator function-
ing as the PPM (pulse phase modulation) signal
5

source. This signal is applied to the integrator
circuit where the pulse trains are averaged to
obtain the demodulation signal.
Since beating down the IF frequency in the first
stage results in an improved S/N, the effects of
pulse variations are reduced and a higher degree of
modulation (deviation frequency/carrier frequen-
cy) is possible, resulting in better detection ef-
ficiency.
Multiplex Decoder
This section consists of IC (PA4006-A), and
contains the PLL system switching signal generator
circuit, chopper type MPX decoder, pilot signal
automatic canceller, stereo auto selector, VCO
killer circuit, muting amplifier, muting control
circuit, and stereo reception indicator circuit.
The chopper type switching circuit either does
or does not establish a signal, thereby generating
no noise or distortion.
4.3 AM TUNER
The AM tuner section uses three varicap diodes
with an AM tuner IC (HA1138). The selectable
WIDE IF band for better sound quality and
NARROW IF band feature for good selectivity
is also included in the AM band. During NARROW
band operation, an additional ceramic filter is in-
serted into the circuit. Also during the NARROW
band mode, a high-pass filter functioning to
eliminate the low frequency beat and improve
audible frequency band balance is inserted into
the detection output circuit.
‘Additionally, an AGC circuit built into the IC
suppresses performance degradation in the pre-
sence of a strong magnetic field. The bar-antenna
also features a cancellation coil; cancellation
current to the coil being supplied by a high-power-
ed AGC circuit. The cancellation current is con-
trolled by output applied to FET (Q20) from the
RF amp (no. 6 pin).
Muting control and SIGNAL indicator control
is by signals from Q24 — Q26, the IF amp and
detection circuit used exclusively for control
applications.
TO TUNING
VARI - CAPS TO MIXER
LOCAL OSCILLATOR
1 VOLTAGE
ry CONTROLLED
OSCILLATOR
PROGRAMMABLE
COUNTER (1/N)
REFERENCE =.
OSCILLATOR ©
LOOP
FILTER
PHASE
COMPARATOR
Fig. 4-1 Basic composition of the PLL synthesizer circuit
6
4.4 SYNTHESIZER CIRCUIT
Basic Principle
As may be noted in Fig. 4-1, the quartz PLL
synthesizer consists of a voltage controlled oscillat-
or (VCO), programmable counter, phase comparat-
or, reference oscillator, and loop filter. With VCO
frequency represented as fs, reference frequency
as fr, and the programmable counter division ratio
as N (an integer), loop value is determined by the
equation fr = fs/N. In other words, when fr is
a set value, VCO frequency (fs) depends on the
division ratio (N) of the programmable counter
and becomes a multiple of fr.
F-9 Synthesizer Circuit
The synthesizer circuit used in the F-9 consists
of the circuit itself, and a control circuit using a
one-chip C-MOS IC (TC9137P). Generally, due to
limitations in the operating speed of the C-MOS IC,
VCO output is divided by a ratio of 8 by a high-
speed prescaler such as an ECL (emitter-coupled-
logic) IC for FM reception, then input into the
synthesizer IC. In this case, the equation becomes
fr = fs/8N, and during 100kHz step operations, fr
becomes 12.5kHz. Any portion of the 12.5kHz
signal not eliminated by the loop filter leaks into
the local oscillator (VCO) as signal line residual
noise. TC9137P is used with prescaler IC (TD6104P)
in a dual programmable counter configuration to
provided split ratio prescaling according to the
pulse swallow count method to put the reference
frequency at 25kHz, outside the audible range.
Thus, noise escaping the loop filter is diminished,
and a high S/N is obtained.
® Reference Signal
The 7.2MHz crystal oscillator signal at pin 2
and 3 of TC9137P is divided by 288 during FM
reception (25kHz), and by 720 during AM recept-
ion (10kHz), then input into the phase comparat-
or.
@ Programmable Counter
During FM reception, this signal is output from
pin 38 to control prescaler IC (TD6104P) using
the swallow count method. During AM reception,
the frequency is split directly.
@ Phase Comparator
The phase comparator compares the phase of
the output of the programmable counter with that
of the reference signal, and if the phase of pro-
grammable counter output signal is found to be
lagging, it lowers the level at pins 34 and 33 by
an amount equivalent to the period of phase lag.

If found to be advanced, it raises the level at the
pins by an equivalent amount. Except for periods
of phase lag or advance, pins 34 and 38 are held
at high impedance levels.
The output of pins 34 and 383 is integrated
(passed through the low-pass filter) and applied
to the VCO varicap diode of the quartz PLL
synthesizer.
4.5 SYNTHESIZER SYSTEM CONTROL
Figure 4-2 shows a block diagram of the syn-
thesizer IC (TC9137P). The following section will
describe the input/output terminals of TC9137P.
Operation Mode Designation
Pins 4 (B1) and 5 (B2) of TC9137P are FM/AM
band designation terminals, and pins 6 (E1) and 7
(E2) are connected in accordance with the local
power supply requirements (for Japan, Europe,
or USA). The input (whether high or low level)
to these terminals designates the operation mode
of the unit (Table 1).
Manual Tuning
When a low level input is applied to pin 9 (A/M)
of TC9137P, the set goes into the manual tuning
mode. In this status, when either pin 10 (UP)
or pin 11 (DOWN) is momentarily dropped to
a low level (as in pressing the UP or DOWN key
once), the tuning frequency will increment up or
REFERENCE
COUNTER
1/288 (FM)
_ 4/800 (AM)
x 4/720 (AM)
BAND
Bi SELECTOR
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Fig. 4-2 Block diagram of synthesizer IC (TC9137P)
down the frequency band in 100kHz steps for FM
reception (FMU mode), and in 10kHz steps for AM
(AM10 mode).
When low level input is applied to pin 10 or11
continuously, tuning frequency will move rapidly
up or down the frequency band (scan function).
When low level input is removed, scan will im-
mediately stop.
Also during the manual tuning modes, when the
tuning frequency reaches the edge of the band
being tuned, scan will stop.
Table 1 Operation designation data
Remarks
76.0—90.0MHz, 100kHz steps
87.5—108.0MHz, 50kHz steps
87.5—108.0MHz, 100kHz steps
L(H)| 522—1602kHz, 9kHz steps
H 520—1610kHz, 10kHz steps
HE,H8 TYPES KU, KC,S ,S/G TYPES
Fig. 4-3 Operation mode designation circuit
Auto Search Tuning
When a high level input is applied to pin 9 (A/M)
of TC9137P, the set goes into the auto scan tuning
mode. To scan up the frequency band, a low level
input is applied to pin 10 (UP); to scan down the
band, low level input is applied to pin 11 (DOWN).
Even though the low level input is removed from
pin 10 or 11, scan continues. When it reaches the
edge of the band, it reverses itself and moves
back up or down the same band. To stop auto
search tuning, a stop signal (H level) must be appli-
ed to pin 12 (A—STOP).
@ Stop signal generation
The muting signal (high level signal output for
inter-station muting or for muting low-strength
broadcast signal) output from pin 13 of the FM
IF system IC (PA38007-A) is used as the stop signal
in the FM mode (Fig. 4-4).
For AM tuning, the AM IF signal is passed
through the IF narrow filter, and that output is
rectified and used as the signal source. Accurate
detection can not be performed by this circuit
alone. However, since the IC is capable of receiv-
ing only frequencies that are multiples of 10kHz,
accurate tuning is possible.

TCSI37P
am (3) UP (0) Down G1) A-stop (9)
AUTO "bh uP =p DOWN
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MANUAL
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SCHMITT
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AM IF NARROW
IF FILTOR T
Fig. 4-4 Scan control circuit
Preset Memory
Preset memory (in TC9137P) allows 6 FM band
and 6 AM band stations to be placed in memory.
Pins 13 through 19 of TC9137P are input/output
type terminals used by the’ display driver. Whena
low level input is applied momentarily to pin 13
(STO), memory write may be performed for a
few seconds. During this period, if one of the pins
between 14 and 19 (M1—M6) is designated (by L
level input) as the memory address, the frequency
on the display at that time is stored in memory,
and the corresponding memory address indicator
(STATION 1-6) is illuminated. When this sequence
is completed, the memory write status is released.
If a memory address is not designated within this
few-second time period, the memory write status
will automatically be released. Preset memory is
automatically switched between the FM and AM
band along with regular band switching.
Memory write status is indicated by the AM or
FM band indicator going from an illuminated to
a flashing status. The cathode for the indicator
LEDs uses a common circuit, and switching is
performed by Q63. Q63 is driven by an astable
multi-vibrator that consists of two inverters.
Normally, this multivibrator is cut off by +B3
supplied through R229, and this maintains Q63 in
an ON status, lighting either the FM or AM in-
dicator. When the MEMORY switch is placed
on, a low level input is applied to pin 13 (STO).
This causes D45 to conduct, inhibiting +B3 and
causing the astable multivibrator to operate, turn-
ing Q63 on-off and causing the FM (or AM) band
indicator to flash. Even though the MEMORY
switch is turned off (by releasing the MEMORY
key), the low level input at pin 13 (STO) continues
(memory write status held) and the FM (AM) band
indicator continues to flash.
TCRI37P
Q58~ O61
FM/AM BAND
SWITCHING
DETECTOR
REC LEVEL
CHECK
Fig. 4-5 Memory store/call circuit
Memory recall is by designating one of the
memory address pins between 14 and 19 (M1—M6).
This applies a low level input to the pin causing
the broadcast frequency stored in that memory
to be tuned to and illuminates the corresponding
indicator.
When the band is switched between FM and AM,
a signal from the band switch detection circuit
causes Q57 to momentarily come on, and tuning
automatically goes to the frequency stored in
memory 1 (STATION 1).
Memory Hold
The power switch (ON/STANDBY) for the F-9
is located in the second stage of the power trans-
formers (Fig. 4-6). Power continues to be supplied
to TC9137P even after the power switeh is tured
off (in STANDBY position).
TC9137P has a self-contained inhibit function
allowing it to set all its functions to a static condi-
tion (oscillations stopped, all inputs locked, in-
dicator drives turned off, all outputs set to L level).
1
lis ro RECTIFIER rate
A ei
O)
POWER
TRANSFORMERS
Fig. 4-6 Memory backup circuit

This function is activated by a low level input to
pin 40 (INH), and during this time, power con-
sumption is held to a level of approximately 10yA.
When the power switch is cut off (placing set in
STANDBY position), pin 40 goes to a low level,
TC9137P goes into an inhibit status, holding
memory contents using minimum current. Also,
when external power supply is cut (AC line cord
unplugged), the charge stored in backup capacitor
(C184) protects the contents. stored in memory
for approximately 3 days.
Q44 functions to prevent IC current drain. When
pins 34 and 33 go into an inhibit status (H level),
the current discharge from these pins can increase
power consumption. Q44 is turned off during
inhibit to prevent this from occurring.
4.6 FREQUENCY DISPLAY CIRCUIT
The synthesizer IC (TC9137P) uses the recep-
tion frequency display static driver IC (TD6301P)
to convert the 5 digit LED numeric display to a
A digit display.
DATA
FREQUENCY DATA
11 bits
16 bits
1 CYCLE
(1. 8ms)
START
SIGNAL
(400yps )
Fig. 4-7 Frequency data signal
LED NUMERIC DISPLAY
2ND DIGIT 3RD DIGIT
Awe mae
wee
4TH DIGIT
ScD B
B 3A DP 4G 4F 4E 40 4C 4B 4A SAF
4 7
EN EIN MMOMOQOW
During FM reception, the 5th digit displays
either a ‘‘0”’ or “5’’ (10kHz increments). The
TC9137P 0/5 terminal (pin 23) is controlled with-
out being passed through TD6301P. The connec-
tion between TC9137P and TD6301P consists of
two timing signal lines and one data signal line.
One cycle of data (Fig. 4-7) is transmitted through
the data line when power is turned on, when tun-
ing frequency is moved UP or DOWN, during
auto-scan, during memory recall, or when the band
is switched between FM/AM. The data signal
consists of a 16 bit binary code, with 11 bits of
frequency data and 5 bits of reception band data.
The 11 bits of frequency data consists of the
difference between the present reception fre-
quency and the lowest frequency obtainable in the
present reception frequency band, in binary-coded
form (the decimal point and 50kHz increments
ignored in FM). :
Using two strings of pulse signals, the TD6301P
converts the binary coded serial data into BCD
coded parallel data. This data is decoded by the
BCD to 7-segment decoder and output to the
display.
When switched to the FM band, TC9137P pin
23 (0/5) controlling the 5th digit (50kHz incre-
ment display) is held at high impedance when “‘0”’,
and drops to a low level at ‘5’. Q385 and Q34
switch on/off to change the 5th digit of the LED
numberic display between “‘0’’ and ‘‘5’’.
STH DIGIT
Coa
Fig. 4-8 Frequency display circuit

7 8 9
External Appearance of Transistors and ICs
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Mark
No.
Part
No.
Description
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Packing
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AKX-056
F-type
plug
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AHA-275
Front
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AHA-276
Rear
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ARB-393
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FM
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ADE-015
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PARTS
LOCATION
NOTES:
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Parts
without
part
number
cannot
be
supplied.
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The
f\
mark
found
on
some
component
parts
indicates
the
importance
of
the
safety
factor
of
the
part.
Therefore,
when
replacing,
be
sure
to
use
parts
of
identical
designation.
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For
your
Parts
Stock
Control,
the
fast
moving
items
are
indicated
with
the
symbols
**
and
*
.
**
GENERALLY
MOVES
FASTER
THAN
*
This
classification
shall
be
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by
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distributor
because
it
depends
on
model
No.,
temperature,
humidity,
etc.
Front
Panel
View
Pillar
Center
cover
ANR-325
ANR-319
Knob
Knob
AAD-335
AAD-332
Hinge
L
Knob
ANR-
NR-320
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AAD-334
Door
ANR-324
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Knob
AAD-337
*
LED
numeric
display
AEL-355
Hinge
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ANR-321
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LED
array
(SIGNAL)
Knob
AEL-354
AAD-336
10
Front
View
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Panel
Removed
* *
Push
switch
(MEMORY,
TUNING
MODE)
ASG-276
Station indicator assembly
GWX-588
* *
Tact
switch
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CALL)
‘
.
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ASG-151
*
*
Push
switch
(REC
LEVEL
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1F
BAND,
MODE)
ASG-274
%
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Push
switch
(FM,
AM)
ASG-174
%*&
*&
Tact
switch
Display
assembly
(UP,
DOWN)
GWX-587
ASG-173
Rear
Panel
View
Terminal
(OUTPUT)
AKB-007
Bar-antenna
asembly
ATB-634
Cabinet
ANE-327
A\
AC
power
cord
Connector
socket
(FM
752)
ADG-052
AKX-068
Terminal
(ANTENNA)
Terminal
(AM
STEREO
OUT)
AKA-014
ARS
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Top View
Tuner assembly
GWE-142
A\
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Power
transformer
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ATT-774
Function
switch
assembly
GWS-296
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switch
(POWER)
ASG-532
11
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SCHEMATIC
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9.
ELECTRICAL
PARTS
LIST
NOTES:
e
When
ordering
resistors,
first
convert
resistance
values
into
code
form
as
shown
in
the
following
examples.
_
Ex.
1
When
there
are
2
effective
digits
(any
digit
apart
from
0),
such
as
560
ohm
and
47k
ohm
(tolerance
is
shown
by
J=5%,
and
K=10%
).
5602
56
xX
10)
561.....
RD%‘%PS
Bld
J
57RQ
47
x
10?
473
.....
RD%‘PS
(47s
J
0.52
OTS
og
ncg
reunite
ab
arack
Patan
RN2H
(ORG)
K
12
CLO
yar
ecagd
ewes
peed
RS1P
(lila
K
Ex.
2
When
there
are
3
effective
digits
(such
as
in
high
precision
metal
film
resistors).
5.62k2
562
x
10!
5621
....
RN%SR
GBM
F
e
The
A
mark
found
on
some
component
parts
indicates
the
importance
of
the
safety
factor
of
the
part.
Therefore,
when
replacing,
be
sure
to
use
parts
of
identical
designation.
e
For
your
Parts
Stock
Control,
the
fast
moving
items
are
indicated
with
the
symbols
**
and
x
.
*x%*
GENERALLY
MOVES
FASTER
THAN
*
This
classification
shall
be
adjusted
by
each
distributor
because
it
depends
on
model
No.,
temperature,
humidity,
etc.
Miscellaneous
Parts
.
Mark
ELECTRICAL
PARTS
Mark
Part
No.
A
ATT-774
ATB-634
AKB-076
A
“ADG-052
Symbol&
Description
Power
transformer
(120V)
Bar-antenna
ssembly
Terminal
(AM
STEREO
OUT)
AC
power
cord
P.C.
BOARD
ASSEMBLIES
Mark
Part
No.
Symbol
&
Description
GWE-142
Tuner
assembly
GWS-296
Function
switch
assembly
GWX-587
Display
assembly
GWX-588
Station
indicator
assembly
Tuner
Assembly
(GWE-142)
CAPACITORS
Mark
Part
No.
Symbol
&
Description
ACM-008
TC1—TC3
,TCS—TC7 Film
trimmer
ACM-006
TC
Ceramic
trimmer
ACM-010
TC8
Film
trimmer
18
CCDCH 100D 50
C1
ACG-018
C109
Ceramic
(390p/50V)
ACH-360
C176
Electrolytic
(0.33/50V,NP)
CGB
R56J
500
‘C15
CCDCH
010C
50
C9,C10,C32
CCDCH
020C
50
C30,
C190
CCDCH
030C
50
CA6
CCDTH
040C
50
C3,C4
CCDCH
O50C
50
C65
CCDCH
O60D
50
C18,C31,C210
Part
No.
CCDCH
080D
50
CKDYB
102K
50
CCDUJ
120J
50
CCDXL
120J
50
CCOCH
150J
50
CCDUS
150J
50
CCDCH
220J
50
CCDCH
330J
50
CCDCH
390J
50
CCDCH
470J
50
CCDCH
560J
50
CCDCH
820J
50
CCDCH
910J
50
CCDCH
101J
50
CCDSL
030C
50
CCDSL
390J
50
CCDSL
101K
50
CCDSL
181K
50
CCDSL
151K
50
CCDSL
221K
50
CKDYB
561K
50
CKDYB
821K
50
CKDYX
473M
25
CKDYF
103Z
50
CKDYF
2232
50
Symbol & Description
C26
C205
C13,C14
C25,C120,C199
C28
C16,C17
C2
C27,C69
C66
C119
C82 C70
C71
C188 C141
C148
C47,C90,C159
C51,C52
C72
C130,C200
C74,C193
C105
C48—C50,
C53,
C67,
C76,
C111,
C151,
C177,
C196
C5—C8,
Ci1, C12,
C37,
C41,
C59,
C61,
C62,
C64,
C73,
C113,
C114,
C122,
C125—C127,
C132, C140,
C142—C145,
C149-—C150,
C155,
C160—C163,
C168—-C171,
C181,
C182,
C186,
C208,
C209
C19—C21,
C23,
C24,
C33—C36,
C38—C40,
C42—C45,
C60,
C63,
C117,
C118,
C123,C146,
C153,C179,
C180,C187,C203
Mark
Part
No.
CKDYF
473Z
50
COMA
2725
50
CQMA
1834
50
CQSA
221J
50
COSA
431J
50
CQSA
222G
50
CEA
OR1M
SOL
CEA
R47M
50L
CEA
010M
S50L
CEA 2R2M SOL
CEA
4R7M
SOL
CEA
6R8M
SOL
CEA 100M S50L
CEA
220M
25L
CEA
470M
10L
CEA
470M 25L
CEA
470M
S50L
CEA
101M
10L
CEA
101M
25L
CEA
221M
25L
CEA
221M
S50L
CEA
331M
10L
CEA
331M
16L
CEA
102M
35L
CEA
222M
6L
CEA
222M
16L
CEANL
2R2M
50
CEANL
470M
16
RESISTORS
NOTE:
When
ordering
resistors,
convert
the
resistance
value
into
code
form,
and
then
rewrite
the
part
no.
as
before.
Mark
+ +
+ +
Part
No.
ACP-006
C92-047
|
C92-048
C92-049
C92-051
RF%PS220J
RN“ZPOOOOOF
RD“ZPMOOOS
SEMICONDUCTORS
Mark
19
Part No.
**
POO1
*& & 2SK168-F
*&
&
2SK34-C
*& & uPC1163H
*&
&
HA1201
Symbol
&
Description
C22,
C56,
C57,
C68,
C77,
C79,
C81,
C84,
C86,
C115,
C124,
C131,
C134,
C154,
C201,C202,C206
C95,
C96,
C108
C195
C189
C121
c91,C94
_
€138,C139,C198
C106,C116,C194,C197
C89,C97—C100,C104,C137,C185,
C192,C204
,C207
C58,C152
C55,C101,C102,C112,C147
C107
C78,C80,C92,C93,C191
C85,C103,C128,C167,C1
73
C83,C88,C129,C136,C1
74
C135
C158,C175
C54
C29,C75,C133
C156
C157
C87
C110
C166
C184
C164,C165,C172
C178
C183
Symbol & Description
—VRI
Semi-fixed
(470)
VR5
Semi-fixed
(100k)
VR2,VR7,VR8
Semi-fixed
(47k)
VR6
Semi-fixed
(10k)
VR3
Semi-fixed
(4.7k)
R6,R7
R66,R67,R89
R1i—R5,
RI-R6S5,
R68—R88,
RIO—
R126,R128—R237,R241
Symbol
&
Description
Q1,02
Q3
Q20,036,041
a9,Q11
Q10
Mark
__
Part
No.
**
2SK34-D
*
*&
PA3007-A
*& *&
PA5001
**&
PA5002
**
PA4006
*
*
HA1138
**
2SK34
kk
2SK61-Y
**
uPD4069C
*
*
1R2E01
* & TC9137P
** TD6301P
**
2SK61-GR
.
**
TD6104P
**
2SA872A
*
*&
2SA1100
(2SA733A)
*
*&
2SB834
*& & 2SC535-A
* * 2SC461-B
*& * 2SC2575
(2SC 945A)
KV1320-4
KV1225-Y
M2-081
KZL130
KZLO61
+ + + FH
MZ-110
10E2
(S1B01—02)
2—1K261
1S2076
(1S1555)
(1$2473)
+ %
+
H*
Symbol
&
Description
045 Q12
Q15
Q16
Q18
Q22
Q21
Q7,08,
Q62
Q31
‘048
Q56
‘014
Q47
Q17
Q35,050—055,060,061
Q37,042
04,05
Q6,013,023—025,027,049
Q19, Q26,
Q28—030, 032-034,
Q38—040,
043,
044,
046,
057—
059,063
D1
(DIA—D1D)
*
D2
(D2A—D2C)
D42
D28
D35
D62
D23—D26,D31—34
D7,D8,D15,D16
D3—D6,
D9—D14,
D17—D22,
D27,
D29,
D30,
D36—-D41,
D43—D61
-*
DI
(KV1320-4)
consists
of
four
vari-cap
diodes
with
the
identical
characteristics.
When
replacing
either
of
them,
first
split
the
new
D1
into
four
pieces
(DI1A—D1D),
and
replace
both
of
them
by
new
D1D
(for
FM
antenna
tuning
circuit),
D1B
and
DIC
(for
FM
RF
tuning
circuit)
and
D1D
(for
FM
local
oscillator
circuit)
at
the
same
time
in
order
to
match
their
characteristics.
**
D2
(KV1225-Y)
consists
of
three
vari-cap
diodes
with
the
identical
characteristics.
When
replacing
either
of
them,
first
split
the
new
D2
into
three
pieces
(D2A-
D2C),
and
replace
both
them
by
new
D2A
(for
AM
antenna
tuning
circuit),
D2B
(AM
RF
tuning
circuit)
and
D2C
(for
AM
local
oscillator
circuit)
at
the
same
time
in
order
to
match
their
characteristics.
TRANSFORM
Mark
Part
N
ATX-0
ATX-0
ATC-1
ATC-1
ATE-O
ATE-O
ATE-0
ATE-O0
ATB-0
ATB-0
ATB-O
ATC-1.
ATC-O
T24-02
ATH-O
ATF-1
ATF-0!
ATF-0!
ATF-0!
ATF-0!
ATF-0O!
ATF-1|
ATF-1'
OTHERS
Mark
Part
Ni
AKA-O
AKB-O0
VBZ3C
(ABA4
kk ASGS
*
ASS-0°
Key
Switch
/
Mark
Part
Ni
*k*
ASG-1
FM/AM
Selec
Mark
Part
Ne
kk ASG-1
20

,
C111,
1,
C59,
,
C114,
C140,
C155,
C181,
Mark
Part
No.
CKDYF
473Z
50
CQMA 272J 50
CQMA
183J
50
CQSA
221J
50
COSA
431J
50
CQSA
222G
50
CEA
OR1M
SOL
CEA
R47M
50L
CEA
010M
50L
CEA
2R2M
50L
CEA
4R7M
50L
CEA
6R8M
50L
CEA
100M
SOL
CEA
220M
25L.
CEA
470M
10L
CEA 470M 25L
CEA
470M
50L
CEA
101M
10L
CEA
101M
25L
CEA
221M
25L.
CEA 221M
50L
CEA
331M
10L
CEA 331M
16L
CEA
102M
35L
CEA
222M
6L
CEA
222M
16L
CEANL
2R2M 50
CEANL
470M
16
RESISTORS
NOTE:
When
ordering
resistors,
convert
the
resistance
value
into
code
form,
and
then
rewrite
the
part
no.
as
before.
Mark
Part
No.
ACP-006
C92-047
C92-048
+ +
C92-049
C92-051
+ +
RF%PS220J
RN%ZPOQOOOOOF
RD“PMOOO/
SEMICONDUCTORS
Mark
19
Part
No.
* * POO!
*&
&
2SK168-F
*&
&
2SK34-C
*&
&
uPC1163H
*&
*&
HA1201
Symbol & Description
C22,
C56,
C57,
C68,
C77,
C79,
C81,
C84,
C86,
C115,
C124,
C131, C134,
C154,
C201,C202,C206
C95, C96, C108
C195
C189
C121
C91,C94
C138,C139,C198
C106,C116,C194,C197 C89,C97—C100,C104,C137,C185,
C192,C204
,C207
C58,C152
C55,C101,C102,C112,C147
C107
C78,C80,C92,C93
,C191
C85,C103,C128,C167,C1 73
C83,C88,C129,C136,C1
74
C135
C158,C175
C54:
C29,C75,C133
C156
‘C157
C87
C110
C166
C184
C164,C165,C172
C178
C183
Symbol
&
Description
~VRI1
Semi-fixed
(470)
VR5 Semi-fixed (100k)
VR2,VR7,VR8
Semi-fixed (47k)
VR6
Semi-fixed
(10k)
VR3 Semi-fixed (4.7k)
R6,R7
R66,R67,R89
R1—R5,
R9—R65,
R68—R88,
RIO—
R126,R128—R237,R241
Symbol
&
Description
Q1,02
Q3
Q20,036,041
a9,Q11
Q10
Mark
Part
No.
**
2SK34-D
*& &
PA3007-A
*
*
PAS5001
*
&
PA5002
* *& PA4006
* * HA1138
**
2SK34
**
2SK61-Y
**
PD4069C
** IR2E01
**
1TC9137P
*
*
TD6301P
*
*
2SK61-GR
**
TD6104P
**
2SA872A
*& *& =2SA1100
(2SA733A)
**
2SB834
*&
&
2SC535-A
* *& 2SC461-B
*&
&
=2SC2575
(2SC
945A)
KV1320-4
KV1225-Y
MZ-081
KZL130
KZLO61
+ + + HF
MZ-110
10E2
(S1BO1—02)
*&
2-1K261
*
182076
(1S1555)
(182473)
-
+ +
-*
D1
(KV1320-4)
consists
of
four
vari-cap
diodes
with
the
—
H*
Symbol
&
Description
045
Q12
Q15
016
Q18
Q22
Q21
Q7,08,
O62
Q31
‘048
O56
Q14
047 Q17
Q35,050—055,060,061
Q37,042
04,05
Q6,013,023—025,027,049 Q19,
O26,
Q28—030,
032-034,
Q38—040,
043,
044,
046,
Q57—
059,063
D1
(DIA—D1D)
D2
(D2A—D2C)
p42
D28
D35
D62
023—D26,D31—34
D7,D8,D15,D16
D3—D6,
D9—D14,
D17—D22,
D27,
D29,
D30,
D36—D41,
D43—D61
identical
characteristics.
When
replacing
either
of
them,
first
split
the
new
D1
into
four
pieces
(D1A—DI1D),
and
replace
both
of
them
by
new
DID
(for
FM
antenna
tuning
circuit),
D1B
and
DIC
(for
FM
RF
tuning
circuit)
and
D1D
(for
FM
local
oscillator
circuit)
at
the
same
time
in
order
to
match
their
characteristics.
**
D2
(KV1225-Y)
consists
of
three
vari-cap
diodes
with
the
identical
characteristics.
When
replacing
either
of
them,
first
split
the
new
D2
into
three
pieces
(D2A-
D2C),
and
replace
both
them
by
new
D2A
(for
AM
antenna
tuning
circuit),
D2B
(AM
RF
tuning
circuit)
and
D2C
(for
AM
local
oscillator
circuit)
at
the
same
time
in
order
to
match
their
characteristics.
—
TRANSFORMERS,
COILS,
AND
FILTERS
ATX-013
ATX-018
ATC-132
ATC-133
ATE-008
ATE-046
ATE-023
ATE-047
ATB-020
ATB-067
Symbol
&
Description
_
Mark
Part
No.
T1 Balun ** ASG-274
T4
Balun
T2
FM
ANT,
coil
* x
ASG-276
T3 FM RF coil
TS
FM
tFT
*&*
ASG-173
17
_
FM
DET.
transformer
Step
Selector
Assembly
16,18
FM
ler
Mark
Part
No.
T9
OSC
coil
———
T11
AM
RF
coil
*&*
ASH015
ATB-069
ATC-134
ATC-077
T24-028
ATH-046
ATF-118
ATF092
ATF-093
ATF-096
ATF-095
ATF-094
ATF-105
ATF-119
OTHERS
Mark
Part
No.
AKA-014
AKB-077
VBZ30PO60FMC
(ABA-065)
|
kk
ASG532
*
ASS-015
Key
Switch
Assembly
Mark
Part
No.
*
*
ASG-151
T10 AM OSC coil
T12 AM IFT
L1
FM
RF
coil
L2
FM
OSC
coil
Mark
L7,L9,L11—L14
RF
choke
coil
L8,L10
RF
chokecoil
F1,F4
FM
ceramic
filter
F5
Trap
coil
(A)
F6
Trap
coil
(B)
F9 AM filter
F10
AM
ceramic
filter
F7,F8
Low
pass
filter
F1
1
AM
ceramic
filter
F2,F3
FM
ceramic
filter
Symbol
&
Description
Terminal
(ANTENNA)
Terminal
(OUTPUT)
Screw
St.
Push switch
(POWER)
X1
Crystal
resonator
Symbol
&
Description
S2—S7
Tact
switch
(STATION
CALL)
FM/AM
Selector
Assembly
Mark
Part
No.
*&*
ASG-174
20
Symbol
&
Description
$8
Push
switch
(FM,AM)
Connector
Assembly
Part No.
AKX-068
Part
No.
*
AEL-355
*&
AEL-353
*
AEL354
*
AEL356
Part No.
*
AEL-351
*
AEL352
VBZ30P080FMC
(ABA-066)
Function
Switch
Assembly
(GWS-296)
Symbol
&
Description
so
Push
switch
(REC
LEVEL
|
CHECK,
IF
BAND,
MODE)
$12
Push
switch
(MEMORY,
TUNING
MODE)
.
$10,811
Tact
switch
(UP,DOWN)
Symbol
&
Description
S13
Slide
switch
(AM
CHAN-
NEL
STEP)
Symbol & Description
Connector
socket
(FM
75Q)
Display
Assembly
(GWX-587)
Mark
Symbol
&
Description
D101
LED
numberic
display
D103
LED
array
(FM,AM)
D104
LED
array
(SIGNAL)
D102
LED
(red,
MULTIPLATH)
Station
Indicator
Assembly
(GWX-588)
Mark
Symbol
&
Description
D201-D212
LED
(Green)
D213-D216
LED
(Orange)
Screw

1
O.
EXP
LODED
Vi
EW
|
Interior
Components
Exterior
Components
} H
|
t
1 H
{
NOTES:
e
Parts
without
part
number
cannot
be
supplied.
e
The
/\
mark
found
on
some
component
parts
indicates
the
importance
of
the
safety
factor
of
the
part.
Therefore,
when
replacing,
be
sure
to
use
parts
of
identical
|
designation.
e
For
your
Parts
Stock
Control,
the
fast
moving
items
are
indicated
with
the
Mark
No.
Part
No.
Description
Mark
No.
Part
No.
Description
symbols
**
and
*
.
**
GENERALLY
MOVES
FASTER
THAN
*
L
aa
pas
:
eta
101,
Terminal
assembly
This
classification
shall
be
adjusted
by
each
distributor
because
it
depends
on
model
A
*
55
ATT-77
OMT
FFAS
OUTER
ee
ie
saddle
No.,
temperature,
humidity,
etc.
Be)
eS
’
rame
.
?
4.
GWS-296
Function
switch
assembly
104.
Front
frame
Mark
No.
Part
No.
Description
Mark
No.
Part
No.
Description
5,
PMZ30P060
FMC
Screw
105,
Holder
1
ANR-316
Slider
assembly
16.
AAD-332
Knob
(FM)
6.
GWX-588
Station
indicator
assembly
106.
Key
switch
assembly
2.
VBZ30PO60FMC
Screw
17.
AAD-333
Knob
(AM)
7.
GWX-587
Display
assembly
107.
FM/AM
selector
assembly
|
3.
ANB-969
Front
panel
assembly
18.
AEC-613
Cabinet
bumper
8.
GWE-142
Tuner
assembly
108.
Centar
fare
4.
BTZ23PO50FZK
Screw
19,
VTZ40PO80FMC
Screw
A
9.
ADG-052
~
AC
power
cord
109
Side
frame
5.
VBZ30PO60FMC
Screw
20.
AAD-336
Knob
(POWER)
10.
AEC-327
Strain
relief
110.
Step
esleciohaneialy
|
6.
AAD-335
Knob
(REC
LEVEL
CHECK,
IF
21.
ANE-327
Cabinet
11.
ATB-634
Bar-antenna
assembly
111.
Cc
BAND,
MODE,
MEMORY,
22.
BBT30PO80FZK
Screw
12,
BBT30PO80FZK
—
Screw
112.
Rear
se
saa
|
TEMING
MORE)
13.
PMT30PO60FZB
Screw
7.
AAD-337
Knob
(UP,
DOWN)
101
‘
Front
panel
14.
ABA-176
Screw
8.
ABH-070
Coiled
spring
102.
Guide
plate
B
15.
ABE-063
Washer
9.
AAD-334
Knob
(STATION
CALL)
103.
Guide
plate
A
10.
ANR-320
Hinge
L
104,
Bottom
plate
16.
ABN-059
Nut
17,
AKB-076
Terminal
(AM
STEREO
OUT)
11.
ANR-324
Door
12.
ANR-321
Hinge
R
13,
ANR-325
Pillar
14.
ANR-319
Center
cover
15.
ABH-069
Coiled
spring
21
22

11.
ADJUSTMENTS
FM
Tuner
®
Set
each
switch
on
F-9
as
follows:
REC
LEVEL
CHECK
switch
to
“OFF”
FM
IF
BAND
switch
to
“WIDE”
MODE
switch
to
‘““MONO’”’
TUNING
MODE
switch
to
‘““MANUAL”’
FM switch
to “ON’’
+7
.
FM
SG
(400Hz,
+76kHz
DEV.)
-
cuancy’
|
Aditistment
on
the
display
point
Frequency
87.50MHz
6 Connect the FM SG (FM signal generator) to
the
FM
ANTENNA
3000
terminal
via
a
3002
dummy antenna.
®
Use
a
frequency
counter
to
accurately
set
the
FM
SG
output
frequency.
Adjust
so
that
voltage
between
terminal
21
and
ground
terminal is
DC 7.0V.
No
signal
108.00MHz
TC4
Repeat
steps
1
and
2
until
both
requirements
have
been
met.
Adjust
so
that
voltage
between
terminal
21
and
ground
terminal
is
DC
25V.
T2
90.00MHz
T3
L1
106M
Hz
106.00MHz
TS
Adjust
so
that
voltage
between
terminal
22
and
ground
terminal
is
at
its
maximum.
Repeat
steps
4
through
10
until
voltage
between
terminal
22
and
ground
terminal
has
reached
its
maximum.
Set
the
FM
IF
BAND
to
“NARROW”
position
and
turn
VR1
fully
around
in
the
counter-clockwise
direction.
No signal 98,00MHz T7
Adjust
so
that
voltage
across
terminals
23-24
is
DC
OV +100mV.
98.00MHz
Adjust
so
that
voltage
across
terminals
23-24
is
DC
OV +100mvV.
98MHz
No
modulation
98.00MHz
Adjust
so
that
frequency
at
terminal
11
is
1.26MHz.
98.00M
Hz
Adjust
so
that
voltage
across
terminals
8-9
is
DC
OV +100mV.
Set
the
TUNING
MODE
switch
to
‘‘AUTO”
position,
and
FM
IF
BAND
switch
to
WIDE
position.
98MHz
26dB
98.00MHz
VR2
FM
SG
output
level,
98.00MHz
Adjust
just
before
muting
is
effected.
Adjust FM SG output level so that No. 3 comes on in the
SIGNAL indicator,
98MHz
40dB
or
so
No
modulation
98.00MHz
VR1
ees
Set
the
FM
IF
BAND
switch
to
WIDE
position,
23°
Set
the
FM
IF
BAND
switch
to
the
NARROW
position.
Adjust
so
that.
No.
3
comes
on
in
the
SIGNAL
indicator.
FM
Multiplex
Decorder
e
Set
the
MODE
switch
on
F-9
to
the
AUTO
position.
e
Switch
the
FM
SG
to
external
modulation
and
connect
the
MPX
SG
(FM
Multiplex
signal
generator)
to
the
external
modulation
input
terminal.
©
Adjust
FM
SG
output
to
98.000MHz
(Frequency
must
be
accurate),
80dB,
and
then
tune
F-9
to
the
FM
SG
output
(98MHz).
MPX
SG
Frequency
Adjustment
OUTPUT
MODE
on
the
display
point
Adjust
so
that
frequency
at
terminal
7
is
76000Hz
(+150Hz).
No
signal
(no
modulation)
98.00MHz
Adjust
so
that
a
leakage
of
19kHz
at
OUTPUT
terminal
is
balanced
between
R
and
L
channels
and
minimized
at
the
same
time.
Pilot
(19kHz)
only
(+7.5kHz
deviation)
98.00MHz
T5
Adjust
so
that
distortion
factor
at
OUTPUT
terminal
is
Main
=
1kHz,
Lor
R
(with
in+90)
minimized.
(+67.5kHz
deviation)
Pilot
(£7.5kHz
deviation)
98.00MHz
,
;
Adjust
so
that
separation
at
OUTPUT
terminal
is
balanced
between
R
and
L
channels
and
maximized
at
the
same
time.
AM
Tuner
e
Set
each
switch
on
F-9
as
follows:
REC
LEVEL
CHECK
switch
to
“OFF”
AM
IF
BAND
switch
to
“NARROW”
TURNING
MODE
switch
to
“MANUAL”
AM
switch
to
“ON”
AM
CHANNEL
STEP
switch
to
9kHz
e
Connect
the
AM
SG
(AM
signal
generator)
to
the
AM
ANTENNA
terminal
on
F-9
via
a
1kQ
resistor
®
Use
a
frequency
counter
to
accurately
set
the
AM
SG
output
frequency.
9
AM
SG
(400Hz,
+30%
MOD.)
Frequency
Adjustment
on
the
displ
int
522kHz
Adjust
so
that
DC
2V
is
obtained
between
terminal
21
and
ground terminal.
No signal
Adjust
so
that
DC
25V
is
obtained
between
terminal
21
1602k
Hz
and
ground
terminal.
Repeat
steps
1
and
2
until
both
requirements
have
been
met.
|
Bar
antenna
603kHz
Adjust
so
that
voltage
between
terminal
22
and
ground
terminal
reaches
its
maximum
level.
1404k
Hz
24

REC Level Check Signal Generator
e Set the FM IF BAND switch to the WIDE position, FM switch to the ON.
ea 98MHz 60dB 98.00M Hz eens 4 Verify output leve of OUTPUT terminal.
ahaa A eataais Set the REC LEVEL CHECK switch to the ON position.
Adjust. so that output level of OUTPUT terminal is
6dB lower than that in step 1.
Bar antenna
F TC1
Qe = Soar 7
TC2
2 G0000 a
res (Ore 2@®
i Terminal 7 VR7 T11 I!
@-vrs5
VR6
T10-f8)
G = Terminal 11 TC6
Terminals
8,9 (S79 @—vr3
(s}-8
@—vr2
TC3
17 VR1 oO y (ot | T5
o L2 T04
2 Terminals 23,24 Y .
hi
Terminal
22
Terminal
21
/
4
| of
Pg
Fig. 12-1 Adjustment points and measuring points
25

11. REGLAGE
Tuner FM
Positionner chaque commutateurs de F-9 de la maniére suivante:
Contacteur REC LEVEL CHECK sur OFF.
Commutateur FM IF BAND sur WIDE.
Sélecteur de MODE sur MONO.
Sélecteur TUNING MODE sur MANUAL.
Commutateur FM sur ON.
Connecter le FM SG (générateur de signaux FM) a la borne FM ANTENNA 300 ohms en intercalant
une antenne fictive de 300 ohms.
e Utiliser un compteur de fréquence pour régler exactement la fréquence de sortie FM SG.
FM SG
(400Hz, +75 KHz dérive)
Fréquence
Absence de signal
Affichage de
fréquence
87,50 MHz
Point de Z
réglage Méthode
Régler de maniére 4 ce que la tension entre la borne 21 et la
borne de masse soit de 7 V CC.
108,00 MHz
Régler de maniére a ce que la tension entre la borne 21 et la borne
de masse soit de 25 V CC.
20 dB 90,00 MHz
106 MHz
106,00 MHz
Recommencer 1 et 2 jusqu’a ce que les réglages soient convenables.
eae Régler de maniére a ce que la tension entre la borne 22 et la borne
=e de masse soit maximale.
TC3
Recommencer les travaux de 4 a 10 jusqu’a ce que la tension entre la borne 22 et la borne de masse soit maximale.
Amener le contacteur FM IF BAND sur “NARROW” et tourner VR1 complitement dans le sense inverse des aiguilles d'une montre.
Absence de signal
98,00 MHz
60 dB
Absence de modulation
98,00 MHz
Régler de maniére a ce que la tension entre les bornes 23 et 24
soit de 0 V CC +100 mV.
Régler de maniére a ce que la tension entre les bornes 23 et 24
soit de 0 V CC +100 mV.
Régler de maniére a ce que la fréquence au niveau de la borne 11
soit de 1,26 MHz.
Régler de maniére a que la tension entre les bornes 8 et 9 soit
de 0 V CC +100 mV.
26
98,00 MHz
Environ 40 dB
Absence de modulation
98,00 MHz
Régler juste avant que I’assourdissement ne survienne.
Niveau de sor-| Régler le niveau de sortie du FM SG de maniére a ce que le n° 3
tie du FM SG | apparaisse sur le teémoin de SIGNAL.
Amener le commutateur FM IF BAND sur la position NARROW.
98,00 MHz
Régler de maniére a ce que le n° 3 apparaisse sur !e témoin de
SIGNAL.
Positionner le commutateur FM IF BAND sur WIDE.