Sony CFD-20 - Troubleshooting Guide; General Troubleshooting; CD Operation Issues; Tape Operation Issues

Troubleshooting Guide-—check the following possible causes.
Tape Operation
General
No sound from the speakers
¢ improper polarity of the batteries
¢ Weak batteries - Replace ail the batteries with new
ones.
* {mproper FUNCTION selector setting
¢ The headphones are plugged in.
CD Operation
The unit does not operate
¢ The disc is inserted with the labeled surface down.
¢ The disc compartment lid is not closed.
¢ Dusty or defective disc — Clean the disc with an
optical cleaning cloth. Wipe the disc from the center
out.
¢ Moisture condensation > See “Precautions”.
¢ Improper FUNCTION selector setting
# When the CD operation buttons cannot be activated,
turn off the unit and turn it on again.
Skipping of sound in CD operation
¢ Dusty or defective disc ~ Clean the disc.
e Dirty lens ~ Clean the lens with a commercially
available blower.
¢ Strong vibrations
CFD-30
Capstan
eto
Pinch roller Record/playback head
Erase head
No tape operation
e Ii PAUSE button is depressed. — Press again to
release it.
@ REC button cannot be depressed.
e The cassette inserted has the tabs removed. -* Cover
the slots.
Sound drop-outs, loss of high frequencies, or excessive
noise
¢ Dirty heads > Clean the portions illustrated below
with a cleaning tip slightly moistened with cleaning
fiuid or alcohol.
Recording or playack cannot be made or there is a
decrease in sound level.
¢ Dirty heads > Clean the heads.
¢ Improper FUNCTION selector setting
Unsatisfactory erasing
¢ Dirty erase head — Clean the head.
CED-20
Pinch roller Record/playback head
Capstan Erase head
Audio Power Specifications
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
With 3.0-ohm loads, both channels driven from 150-15,000 Hz: rated 2.3 W per channel
minimum RMS power, with no more than 10% total harmonic distortion in AC operation.
Other Specifications
CD player section
System Compact disc digital audio system
Laser diode properties Material: GaAlAs
Wavelength 780 nm
Emission duration: Continuous
Laser output: less than 44.6 u.W
This output is the value measured at a
distance of about 200 mm from the objective
lens surface on the optical pick-up block.
20-20.000 Hz +2 dB
Below measurable limit
Frequency response
Wow and flutter
Radio section
Frequency range FM: 87.6-108 MHz
AM: 530-1,710 kHz
FM: Telescopic antenna
AM: Built-in ferrite bar antenna
Tape recorder section and general
Recording system 4-track 2-channel stereo
Frequency response 70-10,000 Hz
(with TYPE | (NORMAL) cassette)
Antennas
Speaker Full-range speakers: 10 cm dia., cone type
Power output (except 4.6W (2.3 W + 2.3 W) {at 3.0 ohms,
USA model) 10% harmonic distortion)
Input Mixing microphone input jack (minijack)
Sensitivity 2.5 mV
For low impedance microphone
Output Headphones jack (stereo minijack)
For 16-68 ohms impedance headphones
Power requirements 120V AC, 60 Hz
DC 9 V, 6 size D (R20) batteries
Power consumption 25 W
Battery life (hours)
FM recording
CD playing
Sony SUM-1 (NS)
Sony Alkaline AM 1 (N)
approx. 9 approx. 2.5
Tape playing
approx. 6
approx. 11
Approx, 410 x 170 x 235 mm (wi/h/d)
(Approx. 16% x 63%4 x 9% inches)
incl. projecting parts and controls
Weight Approx. 4.2 kg, incl. batteries
(Approx. 9 Ib 5 oz)
AC power cord (1)
approx. 16.5 approx. 4.5
Dimensions
Supplied accessory
Design and specifications subject to change without notice.
Optional Accessories
Sony “MDR” headphone series
Sony “Dynamic microphone” series
Head demagnetizer HE-5C
CD cleaner XP-CD1, XP-CD4