Sony CFD-W57 - Cd Radio Cassette-corder User manual

– 1 –
Model Name Using Similar Mechanism CFD-222
CD CD Loading Mechanism Type KSL-213CGP
Section CD Mechanism Type KSM-213CGP
Optical Pick-up Name KSS-213C
TC Model Name Using Similar Mechanism NEW
Section TapeTransport Mechanism Type MF-W57
SERVICE MANUAL
US Model
E Model
CFD-W57
CD RADIO CASSETTE-CORDER
MICROFILM
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a distance of
about 200 mm from the objective lens surface on
the optical pick-up block with 7 mm aperture.)
Spindle speed
200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels
2
Frequency response
20 - 20,000 Hz +1/–2 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM US model 87.6 - 108 MHz
Singapore model 87.6 - 107 MHz
AM US model 530 - 1,710 kHz
Singapore model 531 - 1,602 kHz
(9 kHz STEP)
530 - 1,710 kHz
(10 kHz STEP)
IF FM: 10.7 MHz
AM: 450 kHz
Aerials
FM: Telescopic aerial
AM: Built-in ferrite bar aerial
SPECIFICATIONS
– Continued on next page –
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal): 70 - 12,500 Hz
General
Speaker
Full range: 8 cm (3 1/4 in.) dia.,
3.2 ohms, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 64 ohms impedance headphones
Maximum power output (Singapore)
4.5 W + 4.5 W
Power requirements
For CD radio cassette-corder:
120 VAC, 60 Hz (US)
230 VAC, 50 Hz (Singapore)
12 V DC, 8 R20 (size D) batteries
For memory back-up:
6 V DC, 4 R6 (sizeAA) batteries
For remote control:
3 V DC, 2 R6 (sizeAA) batteries
Power consumption
AC 28 W (US)
AC 25 W (Singapore)
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
With 3.2-ohm loads, both channels driven
from 250 - 10,000 Hz: rated 3.3 W per
channel-minimum RMS power, with no more
than 10% total harmonic distortion in AC
operation.
Other Specifications
Photo : E Model
Ver 1.22000. 07
With SUPPLEMENT-1
(9-923-399-81)

– 2 –
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE
WITH MARK !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 PUBLISHED BY SONY.
Battery life
For CD radio cassette-corder:
FM recording
Sony R20P: approx. 4.5 h
Sony alkaline LR20: approx. 12 h
Tape playback
Sony R20P: approx. 2 h
Sony alkaline LR20: approx. 4.5 h
CD playback
Sony R20P: approx. 2 h
Sony alkaline LR20: approx. 4.5 h
Dimensions
Approx. 444 ×180 ×256 mm (w/h/d)
(17 1/2 ×7 1/8 ×10 1/8 inches) (incl. projecting parts)
MassApprox. 7.0 kg (15 lb. 7 oz.) (incl. batteries)
Supplied accessories
AC power cord (1)
Remote control (RMT-CW57A) (1)
Design and specifications are subject to change without
notice.
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270˚C during
repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

– 3 –
NOTES ON CABINETS ASSEMBLY
Put flat cable and wires between the cabinets and push them in the
grooves located at A to E in the figure to prevent disconnection
before assembling the set.
B
AC
DE
REAR CABINET
FRONT CABINET
To Exposed Metal
Parts on Set
0.15
µ F1.5k
Ω
AC
voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of aVOM
or battery-operatedAC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale. The
Simpson 250 and Sanwa SH-63Trd are examples of a passive
VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)

– 4 –
TABLE OF CONTENTS
1. GENERAL
Playing a CD ........................................................................... 5
Listening to the radio............................................................... 6
Playing a tape .......................................................................... 7
Recording on a tape ................................................................. 8
2. DISASSEMBLY
2-1. Front Cabinet Assy .............................................................. 9
2-2. Power Board ........................................................................ 9
2-3. Tuner Board....................................................................... 10
2-4. Upper Cabinet Assy .......................................................... 10
2-5. CD Mechanism Block ....................................................... 11
2-6. Main Board ....................................................................... 11
2-7. Record/Playback Switch Board......................................... 12
2-8. Cassette Mechanism Block ............................................... 12
2-9. Holder (MG) Assy ............................................................. 13
2-10. Disc Table .......................................................................... 13
2-11. Pulley (S)........................................................................... 14
2-12. Holder (BU) Assy.............................................................. 14
3. MECHANICAL ADJUSTMENTS............................... 15
4. ELECTRICAL ADJUSTMENTS
Tape Section .......................................................................... 15
Tuner Section......................................................................... 17
CD Section ............................................................................ 18
5. DIAGRAMS
5-1. IC Pin Description ............................................................. 19
5-2. Circuit Boards Location .................................................... 20
5-3. Block Diagram –CD Section–........................................... 21
5-4. Block Diagram –Main Section– ........................................ 23
5-5. Printed Wiring Board –Tuner Section– ............................. 25
5-6. Schematic Diagram –Tuner Section–................................ 26
5-7. Schematic Diagram –CD Section–.................................... 30
5-8. Printed Wiring Boards –CD Section– ............................... 33
5-9. Printed Wiring Boards –Main Section– ............................ 36
5-10. Schematic Diagram –Main Section–................................. 39
5-11. Printed Wiring Board –Panel Section–.............................. 44
5-12. Schematic Diagram –Panel Section– ................................ 47
6. EXPLODEDVIEWS
6-1. Front Cabinet Section........................................................ 52
6-2. Rear Cabinet Section ......................................................... 53
6-3. Upper Cabinet Section ...................................................... 54
6-4. Tape Mechanism Section-1 ............................................... 55
6-5. Tape Mechanism Section-2 ............................................... 56
6-6. Tape Mechanism Section-3 ............................................... 57
6-7. Tape Mechanism Section-4 ............................................... 58
6-8. CD Mechanism Section ....................................................59
6-9. Optical Pick-up Section ....................................................60
7. ELECTRICAL PARTS LIST......................................... 61

– 5 –
SECTION 1
GENERAL This section is extracted
from instruction manual.

– 6 –

– 7 –

– 8 –

– 9 –
• The equipment can be removed using the following procedure.
Set Front cabinet assy Power board
Tuner board
Upper cabinet assy CD mechanism block Holder (MG) assy Disc table
Pulley (S) Holder (BU) assy
Main board Record/playback switch board
Cassette mechanism block
Note : Follow the disassembly procedure in the numerical order given.
2-1. FRONT CABINET ASSY
2-2. POWER BOARD
SECTION 2
DISASSEMBLY
1 battery case lid
9 front cabinet assy
8 CNJ308
7 CNP311
3 BVTP 3x16
4 BVTP 3x12
5 BVTP 3x16
6 BVTP 3x12
2 telescopic antenna
2 CNP902
1 CNP901
3 BVTP 3x10
4 BVTP 3x10
5 BVTP 3x10
6 POWER board

– 10 –
2-3.TUNER BOARD
2-4. UPPER CABINET ASSY
2 BVTP 3x10
4 RADIO BRACKET board
3 BVTP 3x10
1 CN1
6 TUNER board
5 BVTP 3x10
4 BVTP 3x10
3 BVTP 3x10
1 CNP760
5 upper cabinet assy
2 BVTP 3x10

– 11 –
2-5. CD MECHANISM BLOCK
2-6. MAIN BOARD
4 CD mechanism block
3 BVTP 3x10
1 BVTP 3x10
2 BVTP 3x10
7 BVTP 3x10
6 BVTP 3x10
1 CNP314
2 CNP302
3 CNP309
4 CNP805
5 CNP806
8 MAIN boar
d

– 12 –
2-7. RECORD/PLAYBACK SWITCH BOARD
2-8. CASSETTE MECHANISM BLOCK
4 BVTP 3x10
5 RECORD/PLAYBACK SWITCH boar
d
1 CNP301
2 BVTP 3x10
3 lug plate
5 BVTP 3x10
6 BVTP 3x10
7 cassette mechanism bloc
k
4 BVTP 3x10
3 BVTP 3x10
2 CNP808
1 CNP807

– 13 –
2-9. HOLDER (MG) ASSY
2-10. DISCTABLE
1 BVTP 3x8
2 Push the two claws in the
arrowed direction and lift
the holder (MG) assy.
3 Push the two claws in the
arrowed direction and lift
the holder (MG) assy.
holder (MG) assy
2 shaft (table guide
)
3 disc table
1 KTP 2.6x6

– 14 –
2-11. PULLEY (S)
2-12. HOLDER (BU) ASSY
3 belt
4 pulley (S)
2 gear (C)
1 gear (P)
3 cam
4 holder (BU) assy
2 yoke bracket
1 connector

– 15 –
PRECAUTION
1. Clean the following parts with a denatured alcohol-moistened
swab :
record/playback head pinch roller
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head demagne-
tizer. (Do not bring the head demagnetizer close to the erase
head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
6. Power supply voltage: 12V dc.
Torque Measurement DECK A DECK B
Mode Torque meter Meter reading
Forward CQ-102C 22.5 to 55 g • cm
(0.31 to 0.76 oz • inch)
Forward CQ-102C 2 to 5 g • cm
back tension (0.03 to 0.07 oz • inch)
Fast Forward 60 to 120 g • cm
and CQ-201B (0.83 to 1.67 oz • inch)
Rewind
Tape Tension Measurement DECK A DECK B
Mode Tension meter Meter reading
Forward CQ-403A more than 150 g
(more than 5.29 oz)
SECTION 4
ELECTRICAL ADJUSTMENTS
SECTION 3
MECHANICAL ADJUSTMENTS
TAPE SECTION 0 dB = 0.775V
Standard Output Level
Output terminal SP OUT PHONES OUT
load impedance 3.2 Ω32 Ω
output signal level 0.775 V (0 dB) 0.25 V (–10 dB)
TestTape
Tape Signal Used for
WS-48A 3 kHz, 0 dB tape speed adjustment
P-4-A063 6.3 kHz, –10 dB head azimuth adjustment
Tape Speed Adjustment DECK A
Procedure:
• Perform normal speed adjustment before high speed check.
Mode: playback (deck A)
record (deck B)
Deck Tape Adjustment Frequency
speed point counter
A Normal (playback) RV301 2,985 to 3,015 Hz
A HI-SPEED DUBBING
(confirmation) 5,700 to 6,500 Hz
(playback)
B HI-SPEED DUBBING ——— ———
(record)
Frequency difference between the beginning and the end of the
tape should be within ±1.5% (both Normal and Hi-speed).
Adjustment Location:
–set rear view–
0000
2 jack
digital frequency
counter
set
32
Ω
test tape
WS-48A
(3 kHz, 0 dB)
RV301
TAPE
SPEED
ADJ

– 16 –
R-CH
peak R-CH
peak
L-CH
peak
L-CH
peak
screw
position
Output
level
within
3 dB within
3 dB
angle
REC/PB Head Azimuth Adjustment DECK A DECK B
Procedure:
1. Mode: playback
3. Phase Check
Mode: playback
Note: Finish the screw adjustment with a turn in the clockwise
direction.
After the adjustment, lock the adjustment screw.
Adjustment Location: playback head (deck A)
record/playback head (deck B)
2 jack
set
32
Ω
test tape
P-4-A063
(6.3 kHz, –10 dB) level meter
2 jack
set
L-CH
32
Ω
32 Ω
R-CH 

test tape
P-4-A063
(6.3 kHz, –10 dB) osilloscope
R-CH
L-CH
VH
Screen pattern
in phase 45˚ 90˚ 135˚ 180˚
good wrong
adjustment
screw
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 3 dB.

– 17 –
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz
Reading on Digital voltmeter 1.4 ±0.2 V 4.7 ±0.1 V
Adjustment Part <confirmation> L2
FMTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
87.5 MHz 108 MHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 530 kHz 1,710 kHz
Reading on Digital voltmeter 1.0 ±0.1 V 5.3 ±0.2 V
Adjustment Part L4 <confirmation>
AMTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 CT2
620 kHz 1,400 kHz
Adjustment Location: See page 18.
TUNER SECTION 0 dB = 1 µV
• FM Section
Setting:
BAND switch: FM
22.5 kHz frequency
deviation by 1 kHz signal
Output level : as low as possible
• AM Section
Setting:
BAND switch: AM
30% amplitude
modulation by 400 Hz signal
Output level : as low as possible
• Connecting Level Meter (FM and AM)
antenna terminal
(FH1)
FM RF signal
generator
0.01
µ F
set
digital
voltmeter
100 k
Ω
JW16
TP (VT)
2 jack
set
32
Ω
level meter
(range: 0.5-5 V ac
)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
• Connecting Digital Voltmeter (FM and AM)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.

– 18 –
Adjustment Location: tuner board
–tuner board (component side)–
L2
FM
FREQUENCY
COVERAGE
ADJ
FM
TRACKING
ADJ
JW16
TP (VT)
CT1
L1 L4
AM
FREQUENCY
COVERAGE
ADJ
AM
TRACKING
ADJ
CT2
L3
FH1
ANTENNA
TERMINAL
CD SECTION
CD section adjustments are done automatically in this set.

– 19 –
5-1. IC PIN DESCRIPTION
• IC801 CXP83120A-029Q (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 C-SCOR I CD SCOR input
2 W/UP I Wake-up input
3 RMC I Sircs receiver input
4 OPEN-O O CD loading motor control output (Eject direction)
5 CLS-O O CD loading motor control output (Loading direction)
6 OPEN-I I CD open switch input
7 CLS-I I CD close switch input
8 — — Not used.
9 C-SENS1 I CD SENSE-1 input
10 C-SENS2 I CD SENSE-2 input
11 C-SQCK O CD Sub-Q read clock output
12 C-SQSO I CD Sub-Q data input
13 — — Not used.
14 C-XRST O CD reset output
15 C-XLAT O CD serial latch output
16 C-CLK O CD serial clock output
17 C-DATA O CD serial data output
18 R-ST O Stereo indicator output
19 R-DATA O Tuner PLL data output
20 R-CLK O Tuner PLL clock output
21 R-COUNT I Tuner PLL data input
22 R-CE O Tuner PLL chip enable output
23 P.CON O System power control output
24 V-DATA O Volume serial data output
25 V-CLOCK O Volume serial clock output
26 V-CE O Volume serial chip enable output
27 REG-CHK I Low voltage detection input
28 BL-CONT O Back light control output
29 REC I Tape record signal input
30 INI O Tuner select initial setting output
31 SET 9k/10k I Tuner band 9k/10k select input
32 VERSION I Tuner destination band select input
33 – 36 KEY-1 – 4 I Key input
37 SFT-CLK O Shift clock output
38 RESET I System reset input
39 EXTAL1 I Oscillation input (4.19 MHz)
40 XTAL1 O Oscillation output (4.19 MHz)
41 VSS — GND
42 XTAL2 — Not used.
43 EXTAL2 — Not used (Connected to GND).
44 AVREF I A/D converter VREF input
45 AVSS — Analog GND
46 VL O LCD drive port ON/OFF output
47 – 49 VLC-3 – 1 O LCD drive voltage terminal
50 – 53 COM0 – 3 O LCD drive common output
54 – 76 SEG0 – 22 O LCD drive segment output
77 – 80 — — Not used.
81, 82 NC — Not used.
83 ROCK-LED O Not used.
84 POP-LED O Not used.
85 LIVE-LED O Not used.
SECTION 5
DIAGRAMS

– 20 –
Pin No. Pin Name I/O Pin Description
86 VOCAL-LED O Not used.
87, 88 NC — Not used.
89 VDD — Power supply pin (+5 V)
90 NC — Not used.
91 VSS — GND
92 TX O Oscillation output (32.768 kHz)
93 TXE I Oscillation input (32.768 kHz)
94 ISS1 O Tape ISS1 control output
95 ISS2 O Tape ISS2 control output
96 A-MUTE O Audio mute output
97 R-MUTE O Tuner mute output
98 C-MUTE O CD mute output
99 TC2 I Tape play switch input (Deck A)
100 TC1 I Tape play switch input (Deck B)
5-2. CIRCUIT BOARDS LOCATION
MAIN board
LCD board
BACK UP board
BATTERY board
POWER board
HEADPHONE board
LOADING board
CD board
RADIO BRACKET board
TUNER board
HEADPHONE
BRACKET board
RECORD/PLAYBACK
SWITCH board
LAMP board
CONTROL board