Sony cfd 454 s service manual

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CFD-454S/4558

SERVICE MANUAL EMode/

PHOTO: CFO-454$

PECIFICATIONS . - ,
CD , S Model Name Usrng CD Section CFD 503
p ayer section , . .
System Compact disc digital audio system Similar Mechanism Tape Section CFO-60$
Laser diode propenies Material: GaAiAs . . _
Wavelength: 780nm Optical Devtce Name . KSM 210BAN
Emission duration: Continuous Tape Transport Mechanism Type MF-455-64
Laser output power: less than 44.6,.W'
'This output is the value measured at a dis Outputs Headphones jack (stereo minijack)
tance of 200 mm from the obiective lens sur- For 16-68 ohms impedance headphones
face on the optical pickup block. CD out lacks (phono jackt-Z
Spindle speed 12 cm CD: Approx. 200 rpm. to 500 r.p.rn. Load impedance 10 '0th or higher
(CW) Rated output 1.1V ms at load impedance
8 cm CD: Approx. 300 to 500 rpm (CLV) 47 kilohms
Error correction Sony Super Strategy Cross interleave Read Power requirements 110420 2202, AC adjustable, 50/60Hz
50'0 owe DC 12v, 8 R20 (size D) batteries
Number 01 channels 2 Power consumption 24W
Frequency response 20-20900 Hz: 1; dB Battery Iiie
Wow and flutter Below measurable limit .
Batteries Sony SUM-1 (NS) Sony Alkaline AM
Radio section . A 35 hrs
Frequency range FM recording Approx. 15 hrs pprox
FM Saudi Arabia Disc playing Approx. 6 hrs Approx. 16 hrs
model: . .
DimenSIons 677 x 292 x 194 mm (w/h/d)
0t:::107MHZ (26 5/5 x t1 4/8 x 7 5/8 inches)
' incl. projecting parts and controls
WWWWZ Weight 6.7 kg (14 lb 12 02)
MW 530-14605kHz incl. batteries
. Supplied accessory AC power cord (1)
SW Swa- §_Z-27M:ZZ Remote commander (tor CFD- 4558) (1)
' Design and specifications subject to change without notice.
Antennas FM/SW: Telescopic antenna

MW/LW: Built-in ferrite bar antenna

Tape recorder section and general
Recording system 4-tracK 2-channel stereo
Fast Winding time Approx. 2 min. with Sony cassette 060
Frequency response with TYPE l (NORMAL) cassette: 8040.000 Hz
Speakers Woofer: 12 cm dra., cone type

Tweeter: 2 cm dia
Maximum power 8.6W (4.3W+4.3W)

first: (i CD RADIO CASSETTE-BORDER

Sensitivity 0.78 mV

For low impedance microphone N Y
®

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CFD-454S/4558

TABLE OF CONTENTS

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-
UP BLOCK OR BASE UNIT

Section Title Page
specifiCationS ................................ l
Servicing Notes ............................... 2
SECTION 1. GENERAL

Parts Identification ------------------------- 4
SECTION 2. DISASSEMBLY ----------------- 5
SECTION 3. ADJUSTMENTS

3-1. Mechanical Adjustments ----------- -~ 6
3-2. Electrical Adjustments ----------- - 6
SECTION 4. DIAGRAMS

4-1, Bock Diwa- ................. i 13
4-2. Semiconductor Lead Layouts - " 16
4-3. 1C Block Diagram ~~~~~~~~~~~~~ .. 17
4-4. Schematic Diagram (Tuner Section) - 19
4-5. Printed Wiring Boards --------- -- 21
4-6. Schematic Diagran(Audio Section) - 23
4-7. Schematic Diagra-(CI) Section) -------- 26
4A8. Printed Wiring BoardsICD Section) ------- 29
SECTION 5. EXPLODED VIEWS """"""" 32
SECTION 6. ELECTRICAL PARTS LIST """ 39

SUPPLEMENT-1

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

The laser diode in the optical pick-up block may
suffer electrostatic breakdown because of the poten-
tial difference generated by the charged electrostatic
load, etc on clothing and the human body.

During repair, pay attention to electrostatic break-
down and also use the procedure in the printed
matter which is included in the repair parts.

The flexible board is easily damaged and should be
handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so
as to be focused on the disc reflective surface by the
objective lens in the optical pick-Up block. There-
fore, when checking the laser diode emission, observe
more than 25 cm away from the objective lens,

LASER DIODE AND FOCUS SEARCH
OPERATION CHECK

lt Turn POWER switch on with no disc inserted and
set Function switch to CD position.

i Open the lid for CD.
. Turn on $801 as following figure.

l Press > key.

mom

. Confirm the laser diode emission while observing
the objecting lens. When there is no emission,
Auto Power Control circuit or Optical Pick-up is
broken.

Objective lens moves up and down three times for
the focus search.