Sony CFDE-55 Service manual
CFD-E55
SERVICE MANUAL
Ver 1.0 1999. 08
CD
Section
TAPE
Section
US Model
Canadian Model
E Model
Model Name Using Similar Mechanism CFD-Z500
CD Mechanism Type KSM-213CDM
Optical Pick-up Name KSS-213C
Model Name Using Similar Mechanism CFD-Z500
T ape Transport Mechanism Type MF-Z500-117
(US only)
SPECIFICATIONS
Instruction manual (1)
Warranty card (1)
MICROFILM
CD RADIO CASSETTE-CORDER
TABLE OF CONTENTS
1. SERVICING NOTES.............................................. 3
2. GENERAL .................................................................. 4
3. DISASSEMBLY ........................................................ 7
4. MECHANICAL ADJUSTMENTS...................... 12
5. ELECTRICAL ADJUSTMENTS
Tape Deck Section ......................................................... 12
Tuner Section ................................................................. 13
CD Section ..................................................................... 15
6. DIAGRAMS
6-1. Block Diagram – CD Section – .................................... 17
6-2 Block Diagram – TUNER Section – ............................ 19
6-3. Block Diagram – MAIN Section – ............................... 21
6-4. Block Diagram – POWER SUPPLY Section – ............ 23
6-5. Printed Wiring Boards – CD Section – ........................ 27
6-6. Schematic Diagram – CD Section – ............................. 29
6-7. Printed Wiring Boards
– MAIN/POWER SUPPLY Section – ........................... 32
6-8. Schematic Diagram – MAIN (TUNER) Section – ...... 35
6-9. Schematic Diagram
– MAIN (AUDIO)/POWER SUPPLY Section – .......... 40
6-10. IC Pin Function Description .......................................... 43
6-11. Printed Wiring Boards – DISPLAY Section – ............. 45
6-12. Schematic Diagram – DISPLAY Section – .................. 47
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
7. EXPLODED VIEWS ............................................... 54
8. ELECTRICAL PARTS LIST .............................. 61
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
– 2 –
SECTION 1
S701
SERVICING NOTES
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 for AC 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. Follo w 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 a
VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate lowvoltage 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 2 V A C range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
AC
0.15 µF
1.5 k
Ω
voltmeter
(0.75 V)
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential 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. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. T urn PO WER switch on with no disc inserted and make Func-
tion switch to CD position.
2. Open the lid for CD.
3. Turn on S701 as following figure.
4. Press the u button.
5. Confirm the laser diode emission while observing the object-
ing 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.
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
• Code number of Chuck Plate Jig: X-4918-255-1
– 3 –
SECTION 2
GENERAL
This section is extracted from
instruction manual.
– 4 –
– 5 –
– 6 –
DISASSEMBLY
d
• This set can be disassembled in the order shown below.
SECTION 3
Set
Lower cabinet
section
Front cabinet
section
Tape mechanism
deck section
Note: Follow the disassembly procedure in the numerical order given.
LOWER CABINET SECTION
MAIN board
CD board
Cassette lid assy
and cassette holder
Head (HRP301), Motor assy (M301)
and belt
Optical pick-up
section
CD lid
section
3
lower cabinet section
4
connector
(CNP310)
2
three screws
(BTP3
×
12)
2
five screws
(BTP3
×
12)
4
two connectors
(CNP704, CNP308)
1
battery case li
– 7 –
4
connector
(CNP307)
FRONT CABINET SECTION
2
two screws
(BTP3
×
12)
A
1
three connectors
(CNP302, 303, 309)
2
two screws
(BTP3
×
12)
3
Remove the front
cabinet section in
the arrow
A
direction.
MAIN BOARD
2
1
two connectors
(CNP304, 305)
two screws
(BTP3
×
10)
1
three connectors
(CNP306, 311, 312)
rear cabinet
section
2
two screws
(BTP3
×
10)
3
MAIN board
1
connector
(CNP1)
– 8 –
CD BOARD
3
connector
(CNP703)
1
two screws
(BTP3 × 10)
2
CD board
1
two screws
(BTP3 × 10)
3
connector
(CNP702)
OPTICAL PICK-UP SECTION
1
two screws
(PWH2.6
×
10)
4
flat wire (16 core)
(CNP701)
2
optical pick-up
section
1
two screws
(PWH2.6
×
10)
– 9 –
CD LID SECTION
2
damper
1
screws
×
10)
(BTP3
6
CD lid section
4
Open the CD lid section
5
Remove the boss.
TAPE MECHANISM DECK SECTION
2
Open the cassette lid assy.
1
Push the button (ST/EJ).
3
spring (CD)
3
4
two screws
×
10)
(BTP3
tape mechanism deck section
3
two screws
×
(BTP3
10)
– 10 –
)
CASSETTE LID ASSY AND CASSETTE HOLDER
7
spring
8
boss
9
cassette lid assy and
cassette holder
(cassette)
6
damper
8
boss
1
two screws
(BTP3 × 10)
3
4
speaker (R ch)
two screws
(BTP3 × 10)
5
screw
(BTP3 × 10)
HEAD (HRP301), MO TOR ASSY (M301) AND BELT
3
two screws
(B2.6 × 5)
1
connector
(CNP301)
2
bracket (SP)
4
motor assy (M301
2
head (HRP301)
– 11 –
5
belt
SECTION 4
r
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
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 demagnetizer. (Do not bring the head magnetizer 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.
• Torque Measurement
Mode Torque Meter Meter Reading
FWD CQ-102C
FWD
Back Tension (0.021 – 0.076 oz•inch)
FF CQ-201B
REW CQ-201B
CQ-102C
• T ape Tension Measurement
Mode Tension Meter Meter Reading
FWD CQ-403A
30 – 70 g•cm
(0.42 – 0.97 oz•inch)
1.5 – 5.5 g•cm
more than 60 g•cm
(more than 0.83 oz•inch)
more than 60 g•cm
(more than 0.83 oz•inch)
more than 100 g
(more than 3.53 oz)
PRECAUTION
1. Setting
SOUND control : OFF
TAPE DECK SECTION 0 dB=0.775 V
Test tape
Type Signal Used for
WS-48A 3 kHz, 0 dB Tape Speed Adjustment
Tape Speed Adjustment
Setting:
Function: TAPE
Test tape
WS-48A
(3 kHz, 0 dB)
Procedure:
1. Playback WS-48A (tape center) in the FWD state.
2. Adjsut the v olume in CAPSTAN/REEL motor (M301) so that
the frequency counter reading becomes 3,000 Hz.
Specified Value: 2,985 to 3,015 Hz
3. Confirm that the frequency at the beginning and that at the
end of tape winding are between 2,955 to 3,045 Hz.
MAIN board
CNP311 pin
set
frequency counte
4
3.2
Ω
MAIN board
CNP311 pin
+
–
3
Adjustment Location:
– TAPE deck block –
Tape speed
Adjustment
CAPSTAN/REEL motor
(M301)
– 12 –
TUNER SECTION 0 dB=1 µV
r
r
[AM]
Setting:
Function : RADIO
BAND button : AM
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
set
MAIN board
CNP311 pin
3.2
Ω
MAIN board
CNP311 pin
4
level mete
+
–
3
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1 450 kHz
AM VCO VOLTA GE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L4 530 kHz 1.0 ± 0.1 V
Confirmation 1,710 kHz 5.0 ± 0.2 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3 620 kHz
CT2 1,400 kHz
[FM]
Setting:
Function : RADIO
BAND button: FM
FM RF signal
generator
0.01 µF
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
MAIN board
TP (VT)
TP (GND)
MAIN board
TP (ANT)
set
MAIN board
TP (GND)
100 k
CNP311 pin
3.2
MAIN board
CNP311 pin
digital voltmete
Ω
4
level meter
Ω
+
–
3
MAIN board
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer capacitors.
• Remove FM antenna in FM adjustment.
FM VCO VOLTAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L2 108 MHz 4.0 ± 0.1 V
Confirmation 87.5 MHz 1.7 ± 0.2 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1 87.5 MHz
CT1 108 MHz
Adjustment Location: MAIN board (See page 14)
– 13 –
Adjustment Location:
t
– MAIN BOARD (Component Side) –
T1 AM IF Adjustment
FM T rac king Adjustment
FM VCO Voltage Adjustment
– MAIN BOARD (Conductor Side) –
CNP311
1
4
L2
L1
CT1
L4
AM VCO Voltage Adjustment
L3
AM T rac king Adjustmen
CT2
TP (VT) TP (GND)
– 14 –
TP (ANT)
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