SONY CFD F10 Service Manual
CFD-E75
SERVICE MANUAL
Ver 1.6 2002.11
CD
Section
TAPE
Section
US Model
Canadian Model
E Model
Australian Model
Model Name Using Similar Mechanism CFD-926L
CD Mechanism Type KSM-213CDP
Optical Pick-up Name KSS-213C
Model Name Using Similar Mechanism CFD-926L
T ape Transport Mechanism Type MF-V5-117
AUDIO
POWER SPECIFICATIONS
(US model only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 4-ohm loads, both channels driven from
100 - 10,000 Hz; rated 1.5 W per channelminimum 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
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 +0/–1 dB
Wow and flutter
Below measurable limit
Radio
section
US, Canadian, *E92, Taiwan, Mexican models
Frequency range
FM: 87.6 - 108 MHz
AM: 530 - 1 710 kHz
Antennas
FM: Telescopic antenna
AM: Built-in
Singapore, Korean, Argentina models
Frequency range
FM: 87.6 – 107 MHz (Korean model)
AM:
ferrite bar antenna
87.5 – 108 MHz (
531 – 1,602 kHz (9 kHz step)
530 – 1,610 kHz (10 kHz step)
Singapore, Argentina, Australian models
SPECIFICATIONS
IF
FM: 10.7 MHz
AM: 450 kHz
Aerials
FM: Telescopic aerial
AM: Built-in ferrite bar aerial
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 sec. with Sony cassette
Frequency response
TYPE I (normal): 70 - 13 000 Hz
General
Speaker
Full range: 8 cm (3
4 Ω, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 64 Ω impedance headphones
Power output
2 W + 2 W (at 4 Ω, 10 % harmonic distortion
in AC operation)
Power
requirements
For CD radio cassette-corder:
US, Canadian, *E92, Taiwan, Mexican models
120
V AC, 60 Hz
Argentina model
220-230 V AC, 50Hz
Korean model
220 V AC, 60Hz
Other models
230 V AC, 50 Hz
9 V DC, 6 size C (R14) batteries
For memory back-up:
4.5 V DC, 3 size AA (R6) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries
)
1
⁄4 in.) dia.,
Power consumption
AC 14 W
Battery life
For CD radio cassette-corder:
FM recording
Sony R14P: approx. 5 h
Sony alkaline LR14: approx. 20.5 h
Tape playback
C-60
Sony R14P: approx. 6 h
Sony alkaline LR14: approx. 27 h
CD playback
Sony R14P: approx. 1.5 h
Sony alkaline LR14: approx. 8 h
Dimensions
Approx. 283 × 165 × 281 mm (w/h/d)
1
(11
⁄4 × 6 1⁄2 × 11 1⁄8 inches) (incl. projecting parts)
Mass
Approx. 3.5 kg (7 lb. 11 oz) (incl. batteries)
Supplied accessories
AC power cord (1)
Remote control (1)
*E92: Central and South America model
Design and specifications are subject to change without
notice.
CD RADIO CASSETTE-CORDER
9-873-110-17 Sony Corporation
2002K0500-1 Personal Audio Company
C 2002.11 Published by Sony Engineering Corporation
CFD-E75
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.
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. T he 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-63T rd 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
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
Ω
Earth Ground
AC
voltmeter
(0.75 V)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
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.
2
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.
SECTION 1
SERVICING NOTES
CFD-E75
TABLE OF CONTENTS
1. SERVICING NOTES .............................................. 3
2. GENERAL .................................................................. 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 8
3-2. Cabinet Lower Assy ........................................................ 8
3-3. AC INLET Board, Power Board..................................... 9
3-4. TUNER Board, MAIN Board ......................................... 9
3-5. Cover Plate Assy ............................................................. 10
3-6. CD Mechanism Deck (KSM-213CDP) .......................... 10
3-7. Optical Pick-up (KSS-213C) .......................................... 11
3-8. Cabinet Front Assy .......................................................... 11
3-9. Tape Mechanism Deck (MF-V5-117) ............................ 12
3-10. CD Lid ............................................................................. 12
3-11. Lid Cassette Assy, LCD Board ....................................... 13
3-12. Head (HRP301), Motor Assy (M301), Belt ................... 13
3-13. Connector Setting ............................................................ 14
4. MECHANICAL ADJUSTMENTS...................... 15
5. ELECTRICAL ADJUSTMENTS
Tape Deck Section ......................................................... 15
Tuner Section ................................................................. 16
CD Section ..................................................................... 18
6. DIAGRAMS
6-1. Block Diagram – CD Section – .................................... 19
6-2. Block Diagram – TUNER Section – ............................ 20
6-3. Block Diagram – MAIN Section – ............................... 21
6-4. Block Diagram – POWER SUPPLY Section –............ 22
6-5. Printed Wiring Board – CD Section – .......................... 24
6-6. Schematic Diagram – CD Section – ............................. 25
6-7. Printed Wiring Board – TUNER Section – .................. 26
6-8. Schematic Diagr am – TUNER Section – ..................... 27
6-9. Printed Wiring Board – TAPE DECK Section – .......... 28
6-10. Schema tic Diagram – TAPE DECK Section – ............. 28
6-11. Printed Wiring Boards – MAIN/LCD Boards – ........... 29
6-12. Schematic Diagram – MAIN Board (1/2) – ................. 30
6-13. Schematic Diagram – MAIN (2/2)/LCD Boards – ...... 31
6-14. Printed Wiring Boards – PANEL Section – ................. 32
6-15. Schema tic Diagram – PANEL Section –...................... 33
6-16. Printed Wiring Boards
– POWER SUPPLY Section – ....................................... 34
6-17. Schematic Diagram
– POWER SUPPLY Section – ....................................... 35
6-18. IC Pin Function Description .......................................... 38
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 objecti ve lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S901. (push switch type)
The following checking method for the laser diode is operable.
• Method
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the S901 as shown in Fig.1.
Note: Do not push the detection lever strongly, or it may be bent or dam-
aged.
3. Press the [ ] (CD) button.
4. Check the object lens for confirming normal emission of the
laser diode. If not emitting, there is a trouble in the automatic
power control circuit or the optical pick-up.
In this operation, the object lens will move up and down 2
times along with inward motion for the focus search.
u
7. EXPLODED VIEWS
7-1. Cabinet Section ............................................................... 40
7-2. Cabinet Upper Section .................................................... 41
7-3. Cabinet Front Section ..................................................... 42
7-4. Cabinet Lower Section .................................................... 43
7-5. Optical Pick-up Section (KSM-213CDP) ...................... 44
7-6. Tape Mechanism Deck Section-1 (MF-V5-117)............ 45
7-7. Tape Mechanism Deck Section-2 (MF-V5-117)............ 46
8. ELECTRICAL PARTS LIST .............................. 47
S901
Fig.1 Method to push the S901
3
CFD-E75
W
Ver 1.4
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
MODEL IDENTIFICATION
MODEL NO.
CFD-E75
US, Canadian, *E92, Taiwan,
Mexican models: AC: 120 V 60 Hz 14 W
Singapore, Australian models: AC: 230 V 50 Hz 14
Korean model: AC: 220 V 60 Hz 14 W
Argentna model: AC: 220-230 V 50 Hz 14 W
*E92: Central and South America model
There are three types of US model and two types Canadian model.
Please look at the mark of set shown below.
– CD LID Top View –
ORIGINAL TYPE LIV TYPE
(US only)
PSYC TYPE
(US, Canadian)
COLOR V ARIA TION
ORIGINAL TYPE
NAVY
BLUE BLUE
YELLOW RED ORANGE WHITE BLUE
MISTY
US aa a - a --aa aa
CND - - - - a ---aaa
E92 - - - aa a ----MX - - - aaa ----SP - - - aa a ----AR - - - aa a ----KR - - - aa a ----TW - - - - - aa ---AUS - - - - aa -----
• Abbreviation
AR: Argentina model
CND: Canadian model
AUS: Australian model
E92: Central and South America model
KR: Korean model
MX: Mexican model
LIV
TYPE
PSYC TYPE
WHITE RED BLUE GOLD
SP: Singapore model
TW: Taiwan model
4
Basic Operations
SECTION 2
GENERAL
CFD-E75
This section is extracted from
instruction manual.
Playing a CD
1
PUSH OPEN/CLOSE
2
PUSH OPEN/CLOSE
3
1, 2
3
Connect the supplied AC power cord (see page 24).
Press ZPUSH OPEN/CLOSE down
to open the CD compartment and
place the CD on the CD
compartment.
With the label side up
Close the lid of the CD compartment.
Press u (N on the remote).
The player turns on (direct power-on)
and plays all the tracks once.
Display
Use these buttons for additional operations
Jog dial
ZPUSH
OPEN/CLOSE
x
VOLUME +, —
u
POWER
To Do this
adjust the volume Press VOLUME +, — (VOL +, — on
stop playback Press x.
pause playback Press u (X on the remote).
go to the next track Turn the jog dial clockwise.
go back to the previous track Turn the jog dial counterclockwise.
remove the CD Press ZPUSH OPEN/CLOSE.
turn on/off the player Press POWER.
About CD-Rs/CD-RWs
This player is compatible with CD-Rs/CD-RWs but
playback capability may vary depending on the quality of
the disc, the recording device and application software.
the remote).
Press the button again to resume
play after pause.
(On the remote, press >.)
(On the remote, press ..)
Basic Operations
4
Listening to the radio
12
Connect the supplied AC power cord (see page 24).
1 Press RADIO BAND¥AUTO
RADIO
BAND
AUTO PRESET
2 Hold down TUNE + or — until the
T
PRESET until the band you want
appears in the display (direct poweron).
frequency digits begin to change in
the display.
U
N
E
The player automatically scans the
radio frequencies and stops when it
finds a clear station.
If you can't tune in a station, press
the button repeatedly to change the
frequency step by step.
Playing timeTrack number
Display
Indicates an FM stereo
broadcast
Tip
If the FM broadcast is
noisy, press MODE until
Mono appears in the
display and the radio will
play in monaural.
Use these buttons for additional operations
POWER
MODE
VOLUME +, —
To Press
adjust the volume VOLUME +, —
turn on/off the radio POWER
To improve broadcast reception
Reorient the antenna for FM. Reorient the player itself for
AM.
for FM for AM
(VOL +, — on the remote)
5
Basic Operations
6
7
5
CFD-E75
Playing a tape
21
Connect the supplied AC power cord (see page 24).
1 Press xZ to open the tape
compartment and insert a recorded
tape. Use TYPE I (normal) tape only.
Close the compartment.
2 Press n.
The player turns on (direct power-on)
and starts playing.
With the side you want
to play facing you
Display
Use these buttons for additional operations
POWER
VOLUME +, —
m, M
xZ
X
To Press
adjust the volume VOLUME +, —
stop playback xZ
fast-forward or rewind the tape m or M
pause playback X
eject the cassette xZ
turn on/off the player POWER
(VOL +, — on the remote)
Press the button again to
resume play after pause.
Basic Operations
8
Recording on a tape
1
Connect the supplied AC power cord (see page 24).
1 Press xZ to open the tape
2 Select the program source you want
RADIO
BAND
AUTO PRESET
10
compartment and insert a blank tape.
Use TYPE I (normal) tape only.
to record.
To record from the CD player, insert
a CD (see page 4) and press x on the
CD section.
To record from the radio, tune in the
station you want (see page 6).
3
With the side you want to
record on facing you
Display
3 Press z to start recording
Tips
¥ Adjusting the volume or the
audio emphasis (see page
18) will not affect the
recording level.
¥ If the AM program makes a
whistling sound after you've
pressed z in step 3, press
MODE to select the
position of ISS
(Interference Suppress
Switch) that decreases the
noise the most.
¥ For the best results, use the
AC power as a power
source.
¥ To erase a recording,
proceed as follows:
1 Insert the tape whose
recording you want to
erase.
2 Press X.
3 Press n.
4 Press z.
5 Press X.
(n is depressed automatically).
Use these buttons for additional operations
To Press
stop recording xZ
pause recording X
turn on/off the player POWER
POWER
MODE
n
xZ
X
Press the button again to resume
recording.
9
Basic Operations
11
6
The Timer
Setting the clock
— —:— — indication appears in the display
until you set the clock.
MENU
ALARM
Before you set the clock, connect the power
source (see page 24).
1
Press MENU¥ALARM until CLOCK
appears in the display, then press
DSPL¥ENT MEM.
The hour digit flashes.
DSPL
ENT MEMJog dial
3
Press DSPL¥ENT MEM.
The clock starts from 00 seconds.
Tip
The time display system: 12-hour system
AM 12:00 = midnight
PM 12:00 = noon
CFD-E75
The Timer
2
Turn the jog dial to set the current hour.
Then press DSPL¥ENT MEM.
The minute digits flash. Set the minutes
by turning the jog dial until the correct
minute is displayed.
19
7
CFD-E75
t
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
Cabinet lower assySet AC INLET board, POWER board
TUNER board, MAIN board
SECTION 3
DISASSEMBLY
Cover plate assy
Cabinet front assy
CD lid
Note: Follow the disassembly procedure in the numerical order given.
3-2. CABINET LOWER ASSY
3
CD mechanism deck
(KSM-213CDP)
Tape mechanism deck
(MF-V5-117)
4
screw
(BVTP3
×
14)
4
two screws
(BVTP3
×
14)
Optical pick-up
(KSS-213C)
Lid cassette assy,
LCD board
Head (HRP301),
motor assy (M301), bel
6
connector
(CN322)
7
connector
(CNP392)
2
four screws
(BVTP3
×
10)
5
1
two screws
(BVTP3
8
cabinet lower assy
×
14)
8
3-3. AC INLET BOARD, POWER BOARD
r
2
four screws
(BVTP3
×
10)
qa
four screws
(BVTP3
×
10)
4
two screws
(BVTP3
×
10)
3
TUNER board
1
connector
(CNP1)
6
connector
(CNP321)
7
connector
(CNP802)
8
FFC cable 27P
(CNP801)
9
wire (flat type) (14 core)
(CNP323)
0
FFC cable 13P
(CNP322)
5
cover, speaker
qs
MAIN board
5
two screws
(BVTP3
6
plate shield (TRANS)
×
10)
3
AC INLET board
4
connector
(CNP901)
2
two screws
(BVTP3
×
10)
1
connecto
(CN902)
CFD-E75
7
POWER board
3-4. TUNER BOARD, MAIN BOARD
9
CFD-E75
y
k
3-5. COVER PLATE ASSY
2
connector
(CNP802)
6
screw
(BVTP3
3
FFC cable 27P
(CNP801)
6
screw
(BVTP3
×
10)
×
10)
4
wire (flat type) (14 core)
(CNP323)
5
FFC cable 13P
(CNP322)
6
two screws
(BVTP3
7
cover plate ass
×
10)
3-6. CD MECHANISM DECK
(KSM-213CDP)
1
four screws
(2.6
×
10)
1
connector
(CNP321)
10
2
CD mechanism dec
(KSM-213CDP)
)
3-7. OPTICAL PICK-UP
(KSS-213C)
2
two claws
9
optical pick-up
(KSS-213C)
4
claw
3
1
two claws
5
gear (A)
CFD-E75
cover, CD
3-8. CABINET FRONT ASSY
8
cabinet front assy
7
6
screw
(BTP2.6
6
claw
4
Push the knob (stop/eject).
5
×
8)
sled shaft
8
7
two screws
(BVTP3 × 10)
1
FFC cable 27P
(CNP801)
2
wire (flat type) (14 core
(CNP323)
3
connector
(CNP321)
11
CFD-E75
3-9. TAPE MECHANISM DECK
(MF-V5-117)
2
tape mechanism deck (MF-V5-117)
1
four screws
(BVTP3 × 10)
3-10. CD LID
2
damper
1
screw
(BTP2.6
CD lid
driver
4
CD lid
×
8)
3
boss
12
6
two screws
(B2.6
×
5)
7
motor assy (M301)
8
belt
5
head (HRP301)
1
screw
(BVTT2
×
6)
3
Remove
four solders.
4
TC board
2
3-11. LID CASSETTE ASSY, LCD BOARD
)
4
LCD board
3
lid cassette assy
1
two screws
(BTP2.6
CFD-E75
×
8
2
two claws
3-12. HEAD (HRP301), MOTOR ASSY (M301), BELT
13
CFD-E75
3-13. CONNECTOR SETTING
Note: When connecting leads, set it as shown in the figure.
CN303
CNP802
MAIN board
TC board
CN322
CNP321
CNP801
CN321
CNP322
TUNER board
CNP1
14
SECTION 4
+
–
set
Test tape
WS-48A
(3 kHz, 0 dB)
frequency counter
3.2
Ω
POWER board
CNP392 pin
2
POWER board
CNP392 pin
1
Tape speed
Adjustment
CAPSTAN/REEL motor
(M301)
– TAPE deck block –
MECHANICAL ADJUSTMENTS
CFD-E75
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. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
• Torque Measurement
Mode Torque Meter Meter Reading
FWD CQ-102C (30 – 70 g•cm)
FWD
Back Tension
FF CQ-201B (more than 60 g•cm)
REW CQ-201B (more than 60 g•cm)
CQ-102C (1.5 – 5.5 g•cm)
• T ape Tension Measurement
Mode Tension Meter Meter Reading
FWD CQ-403A
2.95 – 6.86 mN•m
(0.42 – 0.97 oz•inch)
0.15 – 5.39 mN•m
(0.021 – 0.076 oz•inch)
more than 5.89 mN•m
(more than 0.83 oz•inch)
more than 5.89 mN•m
(more than 0.83 oz•inch)
more than 100 g
(more than 3.53 oz)
PRECAUTION
1. Setting
MEGA BASS 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
Procedure:
1. Playback WS-48A (tape center) in the FWD state.
2. Adjsut the volume in CAPSTAN/REEL motor (M301) so that
the frequency counter reading becomes 3,000 Hz.
Specified Value: 2,930 to 3,030 Hz
3. Confirm that the frequency at the beginning and that at the
end of tape winding are between 2,940 to 3,060 Hz.
Adjustment Location:
15
CFD-E75
r
r
r
TUNER SECTION 0 dB=1 µV
[AM]
Setting:
Function : RADIO
RADIO BAND button : AM
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
[FM]
Setting:
Function : RADIO
RADIO BAND button: FM
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
Put the lead-wire
antenna close to
the set.
set
TUNER board
TP (ANT)
0.01 µF
set
TUNER board
TP (GND)
POWER board
CNP392 pin 1
level mete
3.2 Ω
+
–
POWER board
CNP392 pin 2
POWER board
CNP392 pin 1
level mete
3.2 Ω
POWER board
CNP392 pin 2
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 ± 0.05 V
Confirmation 1,710 kHz 5.3 ± 0.7 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3 620 kHz
CT3 1,400 kHz
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2 10.7 MHz
FM VCO VOLTA GE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L2 108 MHz 3.0 ± 0.2 V
Confirmation 87.5 MHz 1.3 ± 0.3 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
+
–
L1 87.5 MHz
CT1 108 MHz
Adjustment Location: TUNER and POWER board (See page 16)
digital voltmete
TUNER board
TP (VT)
TP (GND)
100 k Ω
• 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.
16
Adjustment Location:
t
– TUNER BOARD (Component Side) –
CFD-E75
AM VCO Voltage Adjustment
FM VCO Voltage Adjustment
AM T rac king Adjustment
L4
L2
CT3
L3
– TUNER BOARD (Conductor Side) –
TP
(VT)
TP
(GND)
TP
(ANT)
T2 FM IF Adjustment
T1 AM IF Adjustment
L1
FM T rac king Adjustmen
CT1
– POWER BOARD (Conductor Side) –
14
CNP392
17
CFD-E75
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
Focus Bias Check
1. Connect the oscilloscope to TP (RF) and TP (GND) on the CD
board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the [ ] (CD) button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
u
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
0.85 ± 0.2 Vp-p
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
Adjustment Location:
– CD BOARD (Conductor Side) –
IC701
TP (GND)
TP
(RF)
18
Loading...