Sony CFS-W501L/S - Page 8

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