Sony CFS-W501L/S User manual

SERVICE MANUAL
FIGURE: CFS-W501L
AEP Model
CFS-501L:
E Model
CFS-501S:
MICROFILM
SPECIFICATIONS
Frequency FM 87.5—108 MHz (50 kHz increments)
range MW 531—1611 kHz (9 kHz increments)
LW 153—281 kHz (AEP Model)
SW-1 — 5.85--6.35 MHz (49 m)
SW-2 7.00—7.50 MHz (41 m)
SW-3 9.40-—-9.90 MHz (31 m)
SW-4 = 11.60—12.10 MHz (25 m)
SW-5 = 15.10—15.60 MHz (19 m)
SW-6 = 17.55—18.05 MHz (16 m)
SW-7 = 21.40—21.90 MHz (13 m)
FM/SW: Telescopic
MW/LW: Built-in ferrite bar (LW: AEP Model)
Recording system
4-track, 2-channel stereo
Frequency response
80—~ 10,000 Hz
Speakers Full-range: 10 cm (4 inches) x 2
Peak music power output
WW
Rated power output
2.3W + 2.3W at 10% harmonic
distortion in 9V DC operation
Inputs MIX MIC input jack (mono minijack) (1)
sensitivity 3.88 mV for low-impedance microphone
LINE IN jacks (phono) (2)
(input impedance 47 kilohms, sensitivity 0.44 V)
Headphones jack (stereo minijack) for 8—300 ohm
impedance headphones
Power requirements
220 V AC 50 Hz (AEP Model) F
110—120/220—240 V AC 50/60 Hz (E Model)
9 V DC, six R20 (size D) batteries
Clock/tuner memory: 3 V DC, two R6 (size AA)
9 V DC, six R20 (size D) batteries
Clock/tuner memory: 3 V DC, two R6 (size AA)
Antennas
Outputs
MF-W501PB-75D (Deck A)
MF-W301RP-75D (Deck B)
CFS-wW401
Tape Transport
Mechanism Type
Similar Mechanism Set
Power consumption
14 W in AC Operation
Battery life Batteries FM recording
Sony New Super approx.
SUM-1 (NS) 15 hours
Sony AM1 alkaline approx.
26 hours
For clock/tuner memory: Approx. 1 year with Sony
SUM-3 (NS). .
Dimensions Approx. 530 x 134 x 127 mm (w/h/d)
(20 7/8 x 5 3/8 x 5 inches) incl. projecting parts
and controls, not incl. handle
Weight Approx. 3.6 kg (7 Ib 15 02) incl. batteries
Accessory supplied
AC power cord (1)
Optional accessory
Cleaning kit KK-4
Design and specifications subject to change without notice.
FM/MW/LW/SW STEREO
CASSETTE-CORDER
SON Y.

_CFS-W5O1L/S
_
ae
CONTENTS
Section Title Page
SPECIFICATIONS .............00502005 1
MODEL IDENTIFICATION ............. 2
LOCATION AND FUNCTION OF
CONTROLS | co bed eee ee ee ees 3
TO SET THE CLOCK, OPERATION OF
THE ‘RADIO «sc een kee ee ee wee ees 4 ‘
AITO“ SCAN TUNING’ « con. ee coke 5 SAFETY-RELATED COMPONENT WARNING!!
MEMORY
PRESET
TUNING
6
preceanl
IDENTIFIED
BY
SHADING
AND
MARK
ag” @ eve omar ON THE SCHEMATIC DIAGRAMS AND IN THE
TO
SET
THE
TIMER-ON
TIME,
PARTS
LIST
ARE
CRITICAL
TO
SAFE
OPERATION.
FOR WAKE-TO-RADIO ............... 7 REPLACE THESE COMPONENTS WITH SONY PARTS
SECTION
1
ADJUSTMENTS
WHOSE
PART
NUMBERS
APPEAR
AS
SHOWN
IN
THIS
1-1. MECHANICAL ADJUSTMENTS . 8 MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
1-2. ELECTRICAL ADJUSTMENTS .. 10
SECTION 2 DIAGRAMS
2-1. MOUNTING DIAGRAM....... 15
2-2. SCHEMATIC DIAGRAM
; (Tuner Section) ............. 19
2-3. SCHEMATIC DIAGRAM
(Main Section) .............. 21
2-4. SCHEMATIC DIAGRAM
(Display B) .........--.--00- 24
2-5. SCHEMATIC DIAGRAM
(D-DconB)............-00- 24
SECTION 3 EXPLODED VIEWS
PARTS LIST .............. 26
SECTION 4 ELECTRICAL PARTS LIST.... 32
ORTRET RLS RIDES ESSA RSSRSSRISTLSRIT RII RET RETEST RT AST RES RT RTT RST TESTES RTT RIT RTPI RIS ASR IATL RAS RIT ROT AOD
MODEL IDENTIFICATION
— Specification Label —
AEP Model ... CFS-W501L
E Model ....... CFS-W501S
10 BANDS ... AEP Model
9 BANDS... E Model
SONY. — wovet no.
LLL
STEREO CASSETTE-CORDER AC: 220V. ~ 50Hz 14W
YUL UII ee ee ee AEP Model
WLLL
LLL
AC:
110—120/220~240V
~50/60Hz14W
DC: 9V R20 SIZE D X 6 BATT OR — Lares nes E Model
EQUIVALENT
DC: 3V R6 SIZE AA X 2 BATT OR
EQUIVALENT (COMPUTER/CLOCK)
SONY CORP.

LOCATION AND FUNCTION OF CONTROLS
2) B® &) ©) BG) & GB) bo tste)t3) 4 (9)
CFS-WS5O1L/S
Ss Fi ae
me
==
=
\ ~ aah ia Sed
[1] PHONES (headphones) jack (stereo minijack)
{2] Telescopic antennas
{3} VOLUME contro!
[4] 5-BAND GRAPHIC EQUALIZER controls
Use to tailor tone response to listening room or listening
material.
[5] TIMER/SLEEP switch
(6} REC MUTE button
Use to add a silent section during recording.
MIX MIC (external microphone) jack (monaural
minijack)
Minijack to record or mix sound from an external microphone.
MIC (built-in)
(9} Handie
TAPE SELECT (PB) selector
Use during playback to choose between Type i (normal) and
Type li/IV (CrO2/metal) tape types.
{11] RADIO/LINE IN selector
{i2] Tape operation buttons
u PAUSE
~#< FF (fast-forward, AMS) button (deck A)
FF/CUE (fast-forward/cue) button (deck B)
>> REW (rewind, AMS) button (deck A)
REW/REV (rewind/review) button (deck B)
(note: «4 and » do NOT release automatically at tape
end.)
~ PLAY button
e REC (record) button (deck B only)—Pressing this will
automatically depress ~« PLAY.
AM STOP/EJECT
[13] FUNCTION selector ;
Selects RADIO/LINE IN, TAPE or DUBBING. You can choose
NORMAL or Hi-SPEED dubbing.
OPRIBATT (operation/battery) indicator
Shows unit is in use. When glow becomes faint, change all
batteries.
(15) LINE IN jacks (left and right phono jacks)
Allow connection of other component (e.g. CD player).
SENS (sensitivity) (DX/LOCAL) selector
Normally, set to DX.
AC IN socket
VOLTAGE SELECTOR (E Model)
ISS/FM STEREO (Interference suppress/FM stereo-
mono) switch (AEP Model)
- Selects between stereo and mono during FM play, and between
ISS positions 1 and 2 for MW and LW recording.
Speaker
Clock/Timer operation buttons
CLOCK—to set clock
TIMER—to display or set.timer-on time.
SLEEP—for timed radio play.
STANDBY —+to activate or turn off wake-to-radio, wake-to-alarm.
Cassette holder B
Clock/tuner display
FM STEREO indicator
Lights to show stereo reception. Use to find best tuning.
(25] TIME/SCAN +/— buttons
For radio tuning, clock/timer setting.
MEMORY button
To memorize preset radio tuning stations (and to set wake-to-alarm)
Cassette holder A
FM/MW/LW/SW PRESET TUNING buttons (AEP Model)
FM/MW/SW PRESET TUNING buttons (E Model)
BAND selector (AEP Model: FM/MW/LW/SW)
(E Model: FM/MW/SW)

ve
CFS-W5O01L/S
TO SET THE CLOCK
Make sure the FUNCTION selector is set to a position other than RADIO/LINE IN.
2 TIMERO
- TIME/SCAN +
ery f
O
S
CLOCHY staNDBYO
TIMER fF
SLEEP
reer?
(7
STANDBY O
:
TIMERO
-TIME/SCAN+
SLEEPO a a:
CLOCK] c
i) STANDBYO
Hold down CLOCK and... Press + or -. 24-hour time display
Separate times for AM and PM are not displayed. 1:00 PM is
displayed as 13:00. Midnight is displayed as 0:00. Noon is
displayed as 12:00.
For fast clock advance
Hold down + or -.
To set seconds exactly
Ex. To set to 7:00 (00 seconds).
Set clock to 6:59, then continue to hold down CLOCK. At a
signal indicating the exact hour (eg. a radio broadcast or
telephone “time” service) press + once. The clock will be
set to exactly 7:00.
OPERATION OF THE RADIO
MANUAL TUNING
Make sure that TIMER/SLEEP switch is set to OFF.
3
LINE INS @RADIO Mw oe ed tm
fut i
TIME/SCAN +
FUNCTION
LINE IN
RADIO
TIME/SCAN +
(Released) ; 5 BAND
JQ GRAPHIC EQUALIZER
~ Select band. . Tune desired station. Adjust. To turn off radio.
(LW: AEP Model)
@ TAPE
(RADIO OFF)
FUNCTION
i

CFS-WS5O1L/S CFS-WS501L/S
For
SW
tuning
;
MEMORY
PRESET
TUNING
There are
7
SW
frequency
bands
(see
frequency
table).
Table of SW frequency bands Band Frequencies
In step 2 of MANUAL TUNING, if you press SW, the last :
49m 585—6.35 MHz *
To memorize a preset station
previously
tuned
SW-band
(eg.
31
m)
will
be
selected.
Each
41m
700—750
MHz
Ex.
To
memorize
89.20
MHz
FM
at
preset
2.
time
you
press
SW,
the
band
will
advance,
(to
25m,
19m...).
31m
9.40—990
MHz
:
First
the
meter
band,
then
the
frequency
will
be
displayed.
25m
41.60—12.10
MHz
PRESET
After
13
m,
the
49
m
band
is
selected.
19m
1510-1560
MHz
2
16m
—1755—-18.05
MHz
# RADIO
*
MHz
=
kHz»
1000
13m
21.40—21.90
MHz
Fin
iW)
Ws
Sw
MEMORY
iJ
Saat
aa
as
ED
at
ET
mete
FM/MW/LW/SW
PRESET
TUNING
Tune. Hold down MEMORY and press 2. 2 will appear.
ou
eS
PIE AA
U
Cetus Ls ae
Loar)
—_>
sw sw sw
aos )3 (cee cmmniiad Sumas 7am
; 2 To tune a preset station
: After memorizing in the example above: press FM, then
FM/MW/LW/SW (FM/MW/SW) PRESET TUNING 2.
Memorized station FM 89.20 MHz will be tuned.
FM 89.20 MHz is now memorized at preset 2.
AUTO SCAN TUNING
How many stations can be preset?
In step 3 of “MANUAL TUNING,” hold down + or — for Note on LW frequency display CFS-W501L: one FM, one MW, one SW and one LW station
several
seconds,
then
release.
LW
frequency
assignments
are
being
revised.
During
auto
for
each
FM/MW/LW/SW
PRESET
TUNING
button:
a
total
A tone will sound. tuning, frequency displays may be different from the actual of 20 preset stations.
The
tuner
will
tune
in
the
nearest
station
in
that
direction,
frequency
tuned.
Tuning
quality
is
not
affected.
CFS-W501S:
one
FM,
one
MW
and
one
SW
station
for
each
play for 5 seconds, then move to the next station in the FM/MW/SW PRESET TUNING button: a total of 15 preset
selected direction. This process will repeat. To eliminate noise when broadcast source is nearby stations.
When a station you want to listen to is tuned in, press Set SENS to LOCAL.
+ or — within 5 seconds. LW frequency revision
The tuner will remain tuned to that station. Graphic equalizer adjustments Due to a revision of LW frequency assignments, manual ad-
These are the frequency coverages of the equalizer controls. justments may be necessary after tuning of a preset station.
When you reach the first or last frequency in a band 100 Hz: bass.
An aiarm tone will sound. Press + or - to adjust the tuner 400 Hz: speaking voice, middle frequencies of instrumenial
in the opposite direction to stop the alarm. (Alarm will not music.
sound if a station is present at the first or last frequency.) 1 kHz: singing vocals. Boost for increased “presence.”
4kHz: overall brightness of sound.
If tuner stops at frequencies with no station 10 kHz: general treble. Lower to reduce noise. HOUSE CURRENT
This may occur when a broadcast source is nearby. If so, set Raise control to emphasize a frequency band, lower to
SENS to LOCAL. de-emphasize. AC power cord
AC IN socket
=
to a wall outlet
Antenna
adjustment
—
220v—240v
NOV— 120V
VOUTAGE
SELECTOR
(For CFS-W501S only) Adjust the VOLTAGE SELECTOR.
For customers supplied with an AC plug adaptor
Use adaptor if the plug of the AC power cord does not
match the outlet.
Note
The unit cannot be operated on the internal batteries (if
present) when the AC power cord is connected to the unit.
You must remove the AC power cord to use battery power.

TO SET THE TIMER-ON TIME
Make sure the FUNCTION selector is set to a position other than RADIO/LINE IN.
TIMER : CLO
cFs- W501 L/s
TIME/SCAN +
mun ft
tru ft
oF59
Hold down TIMER and...
For fast advance
Hold down + or -.
To check timer-on time
Press TIMER. Timer-on time will be displayed.
Press + or -.
CFS-WSO1L/S
1-1.
SECTION 1
ADJUSTMENTS
MECHANICAL ADJUSTMENTS
PRECAUTION
Clean the following parts. Use a denatured-
alcohol-moistened swab for the group A and
Sony. Pinch Roller Cleaner or a rubber cleaner
swab for B.
record/playback head pinch roller
erase head B tubber belts
capstan idler tire
Demagnetize the record/playback head with a
head demagnetizer. (Do not bring the head
demagnetizer close to the erase head.)
Deck A.
Torque Measurement
Torque meter Meter reading
25 —50gecm
(0.35 — 0.7 ozeinch)
CQ-102C
FWD 2.0 —Sgecm
Back Tension (0.03 — 0.07 oz+inch)
more than 85 g
(more than 1.18 02)
85 — 120 g+cm
(1.18 — 1.67 ozeinch)
FF
CQ-201B
Tape Tension Measurement
3. Do not use a magnetized screwdriver for the
Tension meter Meter reading
adjustments.
4.
After
the
adjustments,
apply
suitable
locking
CQ-403A
more
than
1708
|
.
compound
to
the
parts
adjusted.
(more
than
2.36
oz+inch)
| 5. The adjustments should be performed with the
rated power supply voltage unless otherwise
{ noted.
FOR WAKE-TO-RADIO
1 @ RADIO
O TIMER LINE iN
- OSLEEP RADIO
O STANOBY
nd
Deck
B
orrt
Ton
TIMER/SLEEP
FUNCTION
Torque
Measurement
-TIME/SCAN+
Meter reading
25 — 50 gecm
(0.35 — 0.69 oz+inch)
2—Sgecm
Torque meter
g TIMER
3 OMMER
oJ SLEEP 1. ;
2 STANOBY i
| FWD
(0.028 — 0.069 ozinch)
TIMER TIME/SCAN+
65 —110gecm
aT
|
(0.9
—
1.53
ozeinch
STANDBY
is
displayed.
CO-201B
inch)
:
65
—110g*cm
At the timer-on time, radio
sy
(0.9
—
to
1.53
ozeinch)
CQ-102C
Set timer-on time. Tune. Present time is displayed.
Tape Tension Measurement
Tension meter Meter reading
more than 170g
CQ-403A (more than 2.36 oz)

Head Height Adjustment ~
Procedures:
1.
DECK A: PB
DECK B: REC
Test Cassette: CQ-009C
Viewing from the front, adjust the head heights
to eliminate tape curl and tape twist at portions
of arrow. If .a satisfying result is not provided
with only turning the screws, change the ad-
justment shim or the shim lug.
Adjustment Shim
3-578-138-01 (t =0.1)
3-578-138-11 (t =0.2)
3-578-138-21 (t.=0.3)
Shim Lug
3-331-108-01 (t=0.1)
3-331-108-11 (t =0.2)
3-331-108-21 (t =0.3)
3-331-108-31 (t =0.4)
3-331-108-41 (t=0.5)
REC/PB Head Installation and Position Adjustment
Procedures:
1.
2.
Test Cassette: CQ-009C
Set the cassette tape into the set and install the
head with the screws so that the edge of the
head is in contact with the spacer when pressing
the FWD button and FF button or the FWD
button and REW button at the same time. (At
this time, the portion marked by @ is in con-
tact with the cassette). Then, adjust the REC/
PB head Azimuth Adjustment and apply lock-
ing compound to an installation screw.
cassette guide
*62mm '
M2378 inch
Spacer: Prepare a suitable material and install it
so that distance marked by * is 62mm (2-3/8
inches) and apply locking compound.
playback head
Adjustment Shim
erase head record/playback head
Adjustment Shim
Note: If the Test Cassette CQ-009C is not avail-
able prepare adjustment cassettes as shown
below.
(A) For the Head Height Adjustment.
Cut out hatched
tape cassette portions.
(B) For the REC/PB Head installation and
Position Adjustment.
Cut the tape and roll
in
the
case.
Shield
Plate
(Apply locking
compound to both
Remove the record i
proof claw.
Cut the cassette
half.
Cut the cassette
tape.
1-2. TAPE RECORDER SECTION
ELECTRICAL ADJUSTMENTS
Note: The adjustment should be performed in the order
given in this service manual. The adjustments
should be performed for both L-CH and R-CH.
@ Switches and controls should be set as follows
unless otherwise specified.
FUNCTION: TAPE (RADIO OFF)
VOLUME: mechanical mid
GEQ: mechanical mid
@ Standard Input Level
source impedance 300 2 10kQ
0.77 mV 0.43 V
input
level
(-60
dB)
(-5
dB)
MIC: -46 dB
© Standard Output Level
Output terminal PHONES Speaker
load impedance 322 3.2 2
0.25 V (-10dB) | 0.775 V (0 dB)
output level
Test tape:
Type Signal Used for
P-4-A063 6.3 kHz, -10 dB Azimuth Adjustment
3 kHz, OdB_ | Tape Speed Adjustment
Adjustment screw
Record/playback Head Azimuth Adjustment
Setting:
test tape
P-4-A063
(6.3 kHz, -10 dB)
PHONES
Procedure:
1. Mode: FWD playback
2. Turn the adjustment screw for the maximum
output levels. If these levels do not match, turn
the adjustment screw: until both of output
levels match together within 2 dB.
R-CH
screw Peak
position
—* screw
pce ied Position
peak peak
3. Phase Check
Mode: playback
test tape
P-4-A063
6.3 kHz, -10 dB,
f . : Oscilloscope
[Screen pattern pattern
inphase 45° 138 180",
CO phe AO 2 00 a, a0
good wrong

Tape Speed Adjustment (for both decks A and B)
Setting:
Mode: Playback
test
tape
frequency
counter
WS-48A
(3 kHz, OdB)
ic
Specification (in the middle of the tape):
P| Fea aun
High speed 5970 + 10 Hz
2985+ 5Hz
Frequency difference between the beginning and
the end of the tape should be within +1.5% (45 Hz).
PHONES
Normal speed
Procedure:
1. Short the jumpers of TP (HI SPD).
(It results in high speed mode.)
2. Insert WS-48A in deck-A (deck-B) and put into
playback mode.
3. Adjust RV301 (RV304) for the specified read-
ing on the frequency counter or the speed
checker.
4. Open TP (HI SPD).
(It results in normal speed mode.)
5. Insert WS-48A in deck-A (deck-B) and put into
playback mode.
6. Adjust RV302 (RV303) for the specified read-
ing on the frequency counter or the speed
checker.
Note: Be sure to perform the high speed adjustment at
first.
Adjustment Location: MAIN board
RV301_ RV302 RV303 RV304
(deck-A) (deck-A) TP (HI SPD) (deck-B) (deck-B)
o LI ed
(Rear side of the set: the battery cover is removed.)
CFS-WS5O1L/S CFS-WS501L/S
Record Bias Adjustment
Setting:
GEQ: mechanical mid
FUNCTION: TAPE (RADIO OFF)
Procedure:
1. Mode: record
af osc
* Oo attenuator
=
blank tape
CS-121
EXT MIC
1) 315Hz
2)
6.3kHz
{|
77-5HV
(-800B)
2. Mode: playback
recorded
portion
PHONES
Confirm that the 6.3kHz playback signal level
is 0 +3dB relative to the 315 Hz signal.
If necessary, adjust by connecting or discon-
necting R382.
Adjustment Location: MAIN board
2h gi gl & — an
Os a ee mn AIO
1-3. RADIO SECTION
ELECTRICAL ADJUSTMENTS
e Repeat the procedures in each adjustment several
times, and the frequency coverage and tracking
adjustments should be completed by the (cores
of the) coils.
FM SECTION
FUNCTION: RADIO
BAND: FM
FM rf signal
generator
400 Hz, 30% FM modulation .
frequency deviation +22.5 kHz Frequency coverage: CNP32-2
Output level: as low as possible FM tracking: 8 (R-ch)+9 (L-ch) Pin of CNP15
NULL adjustment: Pin 33 and 34 of IC
FM antenna input
TUNER BOARD (COMPONENT SIDE)
NULL ADJUSTMENT
Adjust until the reading of the
VTVN will be 0.
92 MHz (55 dB)
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for the specified reading on the VT VM.
108 MHz 8.0 +0.1V L2
Tune to 87.5 MHz and confirm that the reading
on the VTVM is 4.5 +0.2 V.
FM TRACKING ADJUSTMENT
Adjust for a maximum reading
on the VTVM.
e7.5 Mi
AM SECTION
FUNCTION: RADIO
BAND: AM
AM rf signal
generator
Put the lead-wire
antenna close to
the set.
30% amplitude modulation
by 400 Hz signal
Output level: as low as possible
TUNE!
AM COVERAGE ADJUSTMENT
LW (AEP Model)
153kHz | 1.2+0.1V
Adjust for the specified reading
on VTVM.
MW (E Model)
Adjust for the specified reading
on VTVM.
531kHz |1.39+0.1V
After LW/MW adjustment tune to
the following frequency and confirm
that the reading on the VTVM satis-
fies the specification.
21.9 MHz (SW)
7.15 +0.2V

CFS-WS5O1L/S CFS-W501L/S |
B) Record Bias Adjustment
Setting:
GEQ: mechanical mid
FUNCTION: TAPE (RADIO OFF)
¢ counter
Procedure:
1. Mode: record
af osc
O attenuator
as |
blank tape
CS-121
3002
EXT MIC
1) 315Hz
2) 6.3kHz
} 77.5 uV (-80dB)
ring and 2. Mode: playback
'S Hz). recorded VTVM
portion
put into
PHONES
ed read- 3. Confirm that the 6.3 kHz playback signal level
e€ speed is 0 +3dB relative to the 315 Hz signal.
If necessary, adjust by connecting or discon-
necting R382.
Adjustment Location: MAIN board
put into
ed read-
e€ speed
ment at
)
2d.)
—-11—
1-3. RADIO SECTION
ELECTRICAL ADJUSTMENTS
e Repeat the procedures in each adjustment several
times, and the frequency coverage and tracking
adjustments should be completed by the (cores
of the) coils.
FM SECTION
FUNCTION: RADIO
BAND: FM
FM rf signal
generator
400 Hz, 30% FM modulation
frequency deviation +22.5 kHz Frequency coverage: CNP32-2
Output level: as low as possible FM tracking: 8 (R-ch)°9 (L-ch) Pin of CNP15
NULL adjustment: Pin 33 and 34 of IC
FM antenna input
TUNER BOARD (COMPONENT SIDE)
NULL ADJUSTMENT
Adjust until the reading of the
VTVN will be 0.
Pa Mie (55)
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for the specified reading on the VTVM.
108 MHz 8.0 +0.1V L2
Tune to 87.5 MHz and confirm that the reading
on the VTVM is 4.5 +0.2 V.
FM TRACKING ADJUSTMENT
Adjust for a maximum reading
on the VTVM.
#7.5
AM SECTION
FUNCTION: RADIO
BAND: AM
AM rf signal
generator
Put the lead-wire
antenna close to
the set.
vO
=e
30% amplitude modulation
by 400 Hz signal AM IF: 8 or 9 pin of CNP15
Output level: as low as possible { AM coverage: CNP32-2
TUNER BOARD (COMPONENT SIDE)
AM COVERAGE ADJUSTMENT
LW (AEP Model)
153kHz
Adjust for the specified reading
on VTVM.
MW (E Model)
Adjust for the specified reading
on VTVM.
531kHz |1.39+0.1V
After LW/MW adjustment tune to
the following frequency and confirm
that the reading on the VTVM satis-
fies the specification.
21.9 MHz (SW)
7.15+0.2V
Adjust for a maximum reading
and a flat passing characteristic.
AM IF ADJUSTMENT

2-1. MOUNTING DIAGRAM
SECTION
2
DIAGRAMS
D
9
F
POWER
BOARD
:
SW
(B)
BOAR
»
Semiconductor
Lead
Layouts.
:
}
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