How it Works
Sony
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CFD G550CP
Diagram
9 pgs8.4 Mb0
Service manual
60 pgs6.04 Mb0
Table of contents
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Sony CFDG-550-CP Service manual

CFD-G550CP
SERVICE MANUAL
Ver 1.0 2004. 07
Section
Section
Model Name Using Similar Mechanism CFD-G500
CD
CD Mechanism Type KSM-213RDP Optical Pick-up Name KSS-213R Model Name Using Similar Mechanism CFD-G500
TC
Tape Transport Mechanism T ype MF-G500
E Model
CD player section
System
Compact disc digital audio system
Laser diode properties
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
Mexican model
FM 87.5 - 108 MHz AM 530 - 1 710 kHz
Other models
FM 87.5 - 108 MHz AM 531 - 1 611 kHz (9 kHz step)
530 - 1 610 kHz (10 kHz step)
Antennas
FM: Telescopic antenna AM: Built-in ferrite bar antenna
SPECIFICATIONS
Cassette-corder section
4-track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal): 70 - 13 000 Hz
General
Speaker
Full range: 10 cm dia., 3.2 Ω, cone type (2) Woofer: 10 cm (4 in.) dia., 4 Ω, cone type (1)
Outputs
Headphones jack (stereo minijack) For 16 - 68 Ω impedance headphones
Power output
4 W + 4 W (at 3.2 Ω, 10% harmonic distortion in DC operation) Woofer: 12 W (at 4 Ω, 10 % harmonic distortion in DC operation)
– Continued on next page –
9-879-113-01
2004G04-1 © 2004. 07
CD RADIO CASSETTE-CORDER
Sony Corporation
Personal Audio Company Published by Sony Engineering Corporation
1
CFD-G550CP
Power requirements
For CD radio cassette-corder: MX model: 120 V AC, 60 Hz E41 model: 230 V AC, 50 Hz 12 V DC, 8 size D (R20) batteries For remote control: 3 V DC, 2 size AAA (R03) batteries
Power consumption
AC 30 W
Battery life
For CD radio cassette-corder:
FM recording
Sony R20P: approx. 6 h Sony alkaline LR20: approx. 18 h
Tape playback
Sony R20P: approx. 1.5 h Sony alkaline LR20: approx. 6 h
CD playback
Sony R20P: approx. 1 h Sony alkaline LR20: approx. 4 h
Dimensions
Approx. 530 × 327 × 241 mm (w/h/d) (incl. projecting parts)
Mass
Approx. 8 kg (incl. batteries)
Supplied accessories
AC power cord (1) Remote control (1)
Design and specifications are subject to change without notice.
•Abbreviation E41 : AC 230V area in E model MX : Mexican model
CAUTION
Use of controls or adjustments or performance of proce­dures other than those specified herein may result in haz­ardous 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 pick­up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
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 P ARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
CFD-G550CP
UNLEADED SOLDER
•
Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350°C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful!
• Strong viscosity Unleaded solder is more viscous (sticky, less prone to f low) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc.
• Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.

TABLE OF CONTENTS

1. SERVICING NOTES......................................................... 4
2. GENERAL............................................................................ 5
3. DISASSEMBLY
3-1. Cabinet (Upper) (1) Section ................................................ 9
3-2. Cabinet (Upper) (2) Section ................................................ 9
3-3. Cabinet (Front) Section ..................................................... 10
3-4. Control 2 Board, VOL Board ............................................ 10
3-5. LCD Board ........................................................................ 11
3-6. Power Board, Trans Board ................................................11
3-7. Control 1 Board................................................................. 12
3-8. H/P Board, TU Board........................................................ 12
3-9. Main Board ....................................................................... 13
3-10. CD Block Section.............................................................. 13
3-11. Optical Pick-up ................................................................. 14
3-12. Tape Mechanism Deck ......................................................14
3-13. TC Board ........................................................................... 15
3-14. Main Belt, Sub Belt........................................................... 15
4. MECHANICAL ADJUSTMENTS............................... 16
5. ELECTRICAL ADJUSTMENTS
Tape Section .......................................................................... 16
Tuner Section......................................................................... 17
CD Section ............................................................................ 18
6. DIAGRAMS
6-1. Block Diagram – CD Section –......................................... 19
6-2. Block Diagram – Main Section –...................................... 20
6-3. Note for Printed Wiring Boards and
Schematic Diagrams .......................................................... 21
6-4. Waveforms......................................................................... 21
6-5. Circuit Boards Location .................................................... 21
6-6. Printed Wi ring Board – CD Section – ............................... 22
6-7. Schematic Diagram – CD Section –.................................. 23
6-8. Printed Wiring Board – Tuner Section – ........................... 24
6-9. Schematic Diagram – Tuner Section –.............................. 25
6-10. Schematic Diagram – Main Section (1/2) – ...................... 26
6-11. Schematic Diagram – Main Section (2/2) – ...................... 27
6-12. Printed Wiring Boards – Main Section – .......................... 28
6-13. Printed Wiring Board – TC Section – ...............................29
6-14. Schematic Diagram – TC Section – .................................. 30
6-15. Schematic Diagram – Control Section – ........................... 31
6-16. Printed Wi ring Boards – Control Section –....................... 32
6-17. Printed Wiring Boards – Power Section –......................... 33
6-18. Schematic Diagram – Power Section – ............................. 34
7. EXPLODED VIEWS
7-1. Overall Section.................................................................. 42
7-2. Cabinet (Front) Section ..................................................... 43
7-3. Cabinet (Rear) Section ......................................................44
7-4. Cabinet (Upper) (1) Section .............................................. 45
7-5. Cabinet (Upper) (2) Section .............................................. 46
7-6. Tape Mechanism Section .................................................. 47
7-7. CD Mechanism Section .................................................... 48
8. ELECTRICAL PARTS LIST......................................... 49
3
CFD-G550CP
SECTION 1

SERVICING NOTES

CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the lid (CD), use Chuck Plate Jig.
• Code number of Chuck Plate Jig: X-4918-255-1
LASER DIODE AND FOCUS SEARCH OPERATION CHECK
1. Turn ON the [OPERATE] button and press [CD] button to CD position.
2. Open the CD lid.
3. Turn on S801 with screwdriver, etc. as following figure.
4. Press the N X (CD) button.
5. Confirm the laser diode emission while observing the objecting lens. When there is no emission, Auto P ower Control circuit or Optical Pick-up is broken. Objective lens moves up and do wn three times for focus search.
S801
4
Basic Operations
Playing an audio CD or MP3 files
1
Connect the supplied AC power cord (see page 23).
1 Press POWER to turn on the player.
42, 3
SECTION 2

GENERAL

4
CFD-G550CP
This section is extracted from instruction manual.
Press u (N on the remote).
The player plays all the tracks once.
To play a CD with MP3 files, see page 6.
Use these buttons for additional operations
Display
Track number
Playing time
POWER
u
Z PUSH
OPEN/CLOSE
x
., >
VOL +, –
Basic
Operations
2 Press Z PUSH OPEN/CLOSE to
3 Press Z PUSH OPEN/CLOSE to
open the CD compartment and place a CD on the CD compartment.
close the CD compartment.
4
Playing an audio CD or MP3 files (continued)
Playing a CD with MP3 files
Note
Before playing a file, this player reads all file and folder information on the CD. Depending on the file structure, it may take more than a minute to read them. During this time, “READING” is displayed.
Tip
You can use the buttons mentioned in the table on page 5 for additional operations in the same way as when playing an audio CD.
1 Press POWER to turn on the player.
2 Press Z PUSH OPEN/CLOSE to open the CD
compartment and place a CD on the CD compartment (see page 4) .
3 Press Z PUSH OPEN/CLOSE to close the CD
compartment.
4 Press u (N on the remote).
The player plays all MP3 files on the CD. When you play a CD with MP3 files, “MP3” appears in the display.
Track number
With the label side up
POWER
Z PUSH OPEN/CLOSE
u
., >
FOLDER –, +
After the file name is displayed, the playing time will appear
Tip
Playback starts from the track you last stopped playing (Resume play). During stop, the track number to be played is displayed. To cancel the resume play to start play from the beginning of the first track, press x in stop mode.
Notes
•A folder that does not include an MP3 file is skipped.
•Maximum number of folders: 255 Maximum number of files: 255
•Folder names and file names can be displayed with up to 64 characters.
• The characters A - Z, a - z, 0 - 9, and _ can be displayed on this player. Other characters are displayed as “*”.
• This player conforms to Version 1.1 of the ID3 tag format. If the file has the ID3 tag information, “song title”, “artist name” and “album name” can be displayed.
To Press
adjust the volume VOL +*, –
stop playback x
pause playback u* (X on the remote)
go to the next track >
go back to the previous track .
remove the CD Z PUSH OPEN/CLOSE**
turn on/off the player POWER
* The button has a tactile dot. **Once you open the CD compartment, the track to start play will
change to the beginning of the first track.
Example of folder structure and playing order
The playing order of the folders and files is as follows:
CD-R CD-RW
1
6
About CD-Rs/CD-RWs and MP3 files
This player can play CD-Rs/CD-RWs recorded in the CD­DA format* and MP3 files recorded in the CD-ROM format, but playback capability may vary depending on the quality of the disc and the condition of the recording device.
*CD-DA is the abbreviation for Compact Disc Digital Audio. It is
a recording standard used for Audio CDs.
1
2
Press the button again to resume play after pause.
Folder
MP3 file
2
3
3
4
5
0
continued
4
5
6
7
8
9
5
Basic
Operations
To select a folder
Press FOLDER + to go forward and – to go backward.
To select a file
Press > to go forward and . to go backward.
6
7
5
CFD-G550CP
Listening to the radio
3
21
Connect the supplied AC power cord (see page 23).
1 Press POWER to turn on the player.
2 Press RADIO BAND•AUTO
3 Hold down TUNE + or – until the
PRESET (BAND on the remote) until the band you want appears in the display. Each time you press the button, the indication changes as follows: “FM” t “AM”.
frequency digits begin to change in the display.
The player automatically scans the radio frequencies and stops when it finds a clear station.
If you can’t tune in a station, press TUNE + or – repeatedly to change the frequency step by step.
Display
Indicates an FM stereo broadcast
Tip
If the FM broadcast is noisy, press MODE until “Mono” appears in the display and radio will play in monaural.
Use these buttons for additional operations
POWER
VOL +, –
MODE
To Press
adjust the volume VOL +*, –
turn on/off the radio POWER
*VOL + has a tactile dot.
To improve broadcast reception
Reorient the antenna for FM. Reorient the player itself for AM.
for FM
for AM
Basic
Operations
8
Playing a tape
1
23
Connect the supplied AC power cord (see page 23).
1 Press POWER to turn on the player.
2 Press xZ to open the tape
compartment and insert a recorded tape. Close the compartment. Use TYPE I (normal) tape only.
With the side you want to play facing upward
Use these buttons for additional operations
m, M
xZ
X
VOL +, –
POWER
To Press
adjust the volume VOL +*, –
stop playback xZ
fast-forward or rewind M or m
pause playback X
eject the cassette xZ
turn on/off the player POWER
*VOL + and N have a tactile dot.
Press the button again to resume play after pause.
9
Basic
Operations
3 Press N*.
10
6
The player starts playing.
Display
11
Recording on a tape
4
1
2
CFD-G550CP
3
4
Press z to start recording (N is depressed automatically).
Use these buttons for additional operations
Basic Operations
z
xZ
X
Connect the supplied AC power cord (see page 23).
1 Press POWER to turn on the player.
2 Press xZ to open the tape
3 Select the program source you want
12
The CD Player
Using the display
You can check information about the CD using the display.
Checking the information of an audio CD
To check the total track number and playing time of the CD
While the CD is stopped, you can check them in the display.
Total track number
To check the remaining time
Press DISPLAY•ENTER•MEMORY while playing a CD. The display changes as follows:
t
The current track number and playing time
r
The current track number and the remaining time of the current track
r
The number of tracks left and the time remaining on the CD
compartment and insert a blank tape. Use TYPE I (normal) tape only. Close the compartment.
to record.
To record from the CD player, press x and load a CD (see page 4).
To record from the radio, press RADIO BAND•AUTO PRESET and tune in the station you want (see page
8).
DISPLAY ENTER MEMORY
Total playing time
Checking the information of a CD with MP3 files
To check the total folder number and total track number on the CD
While the CD is stopped, you can check them in the display.
To check file information
Press DISPLAY•ENTER•MEMORY while playing an MP3 file. The display changes as follows:
t
* If the folder does not have a folder name,
**If the file does not have ID3 information, “NO
With the side you want to record on facing upward
Display
Total folder number
The current track number and playing time
r
The current track number and the file name
r
The folder number and the folder name*
r
The current track number and ID3: the song title / the artist name / the album name**
“ROOT” appears instead of a folder name.
TITLE”, “NO ARTIST” or “NO ALBUM” appears in the display.
Total track number
Tips
•Adjusting the volume or the audio emphasis (see page
21) will not affect the recording level.
•For the best results, use the AC power as a power source for recording.
•To erase a recording, proceed as follows: 1 Insert the tape whose
recording you want to erase.
2 Press X. 3 Press z. (N
4 Press X.
automatically.)
is depressed
To Press
stop recording xZ
pause recording X
turn on/off the player POWER
Locating a specific track
You can quickly locate any track on a CD using the number buttons on the remote. You can also find a specific point in a track while playing a CD.
Number buttons
., >
To locate Press
a specific track the number button of the track directly
a point while > (forward) or . listening to (backward) while playing and the sound hold it until you find the point
a point while > (forward) or . observing (backward) in pause and hold the display it until you find the point
Press the button again to resume recording.
Notes
• Locating a specific track using the number buttons is only available for the tracks in the selected folder.
•You cannot locate a specific track if "SHUF" or "PGM" is lit in the display. Turn off the indication by pressing x.
Tips
•When you locate a track numbered over 10, press >10 first, then the corresponding number buttons. Example: To play track number 23, press >10 first, then 2 and 3.
•To select a track numbered over 100 or more, press >10 twice, then the corresponding number buttons.
POWER
13
The
CD Player
14
15
7
CFD-G550CP
SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.
SET
3-1. CABINET (UPPER) (1) SECTION
(Page 9)
3-2. CABINET (UPPER) (2) SECTION
(Page 9)
3-3. CABINET (FRONT) SECTION
(Page 10)
3-4. CONTROL 2 BOARD,
VOL BOARD (Page 10)
3-12. TAPE MECHANISM DECK
(Page 14)
3-13. TC BOARD
(Page 15)
3-14. MAIN BELT,
3-5. LCD BOARD
SUB BELT (Page 15)
(Page 11)
3-7. CONTROL 1 BOARD
(Page 12)
3-6. POWER BOARD,
TRANS BOARD (Page 11)
3-8. H/P BOARD,
TU BOARD (Page 12)
3-9. MAIN BOARD
(Page 13)
3-10. CD BLOCK SECTION
(Page 13)
3-11. OPTICAL PICK-UP
(Page 14)
8
Note : Follow the disassembly procedure in the numerical order given.
3-1. CABINET (UPPER) (1) SECTION
4
two
screws
BV tapping (B3)
(+
6
two
screws
(+
BV tapping (B3)
)
CFD-G550CP
1
Open the handle in the
)
direction of the arrow.
2
seven
screws
BV tapping (B3)
(+
3
Open the cassette lid.
)
5
Open the CD lid.
3-2. CABINET (UPPER) (2) SECTION
qa
handle
9
CNP301 (5P)
8
CNP392 (4P)
7
CNP393 (4P)
5
CNP804 (2P)
6
CNP801 (11P)
2
Close the CD lid.
two claws
3
1
Close the cassette lid.
0
cabinet (upper) section
4
9
CFD-G550CP
)
3-3. CABINET (FRONT) SECTION
6

cabinet (front) section

5
4
four
screws
BV tapping (B3)
(+
)
3
four
screws
BV tapping (B3)
(+
3-4. CONTROL 2 BOARD, VOL BOARD
7
button (volume)
2
four
BV tapping (B3)
(+
6
two
screws
BV tapping (B2.6)
(+
screws
)
1
battery lid
2
button (function)
)
1
two
screws
(+
BV tapping (B2.6)
)
10
9
VOL board
8
three
screws
(+
P tapping (B2.6)
5
CONTROL 2 board
4
three
)
3
three
screws
(+
P tapping (B2.6)
screws
(+
P tapping (B2.6)
)
)
3-5. LCD BOARD
)
9
panel LCD sub assy
7
three
(+
qa
ring ornament
0
plate light guide LED
screws
BV tapping (B2.6)
6
8

LCD board

)
rear cover
5
four
screws
(+
BV tapping (B2.6)
CFD-G550CP
)
4
five
screws
(+
BV tapping (B3)
3
woofer speaker
)
3-6. POWER BOARD, TRANS BOARD
0
two
screws
BV tapping (B3)
(+
7
two
screws
(+
BV tapping (B3)
9
screw (+
BV tapping (B3)
qs
POWER board,
TRANS board
2
CNP902 (4P)
)
qa
two
screws
BV tapping (B3)
(+
)
)
)
Remove the harnesses.
1
2
two
screws
(+
BV tapping (B3)
two
screws
(+
BV tapping (B3)
)
Remove the harnesses.
6
screw (+
BV tapping (B3)
8
5
four
(+
)
1
sheet trans chassis
screws
BV tapping (B3)
4
)
3
screw (+
BAT1 board
PWH tapping (B3)
)
11
CFD-G550CP
)
3-7. CONTROL 1 BOARD
2
nine
(+
4

CONTROL 1 board

6
screws
BV tapping (B2.6)
button (woofer) assy
7
button (CD)
)
3
two
screws
PWH tapping (B2.6)
(+
)
5
screw
BV tapping (B2.6)
(+
1
CNP806 (3P)
8
button (power)
)
3-8. H/P BOARD, TU BOARD
1
two
screws
(+
BV tapping (B3)
4
TU board
2
CNP1 (11P)
3
Remove the soldering
5
)
screw
PWH tapping (B2.6)
(+
6
JACK HOLD board
7
H/P board
)
8
CNP391 (9P
12
3-9. MAIN BOARD
4
connector (2P)
7
CNJ806 (20P)
8

MAIN board

5
two
screws
(+
BV tapping (B3)
CFD-G550CP
)
6
2
CNP303 (6P)
3
CNP806 (3P)
3-10. CD BLOCK SECTION
1
CNP805 (11P)
1
two
screws
PWH tapping (B2.6)
(+
)
1
two
screws
PWH tapping (B2.6)
(+
3

CD block section

)
13
CFD-G550CP
)
k
3-11. OPTICAL PICK-UP
5
sled shaft
3
screw
(
+P 2x 3
6

optical pick-up

claw
1
gear (A)
4
)
2
(
screw
+P 2x 3
3-12. TAPE MECHANISM DECK
2
CN303 (11P)
1
CNP303 (6P)
3
three
screws
(+
BV tapping (B3)
5
tape mechanism dec
)
14
4
Open the cassette lid.
3-13. TC BOARD
3
Remove soldering from the four points.
1
screw
4
TC board
yellow
red
CFD-G550CP
white
black

TC board

3-14. MAIN BELT, SUB BELT
4
3
(M801)
2
main belt (B)
motor assy
hook
1
(
two
2
hook
screws
+bind DT
M2
x
6)
5
sub belt (B)
15
CFD-G550CP
SECTION 4

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. The adjustments should be performed with the rated power supply voltage (12V) unless otherwise noted.
Torque Measurement
Mode Torque meter Meter reading
2.95 – 6.86 mN • m
FWD CQ-102C (30 – 70 g • cm)
(0.42 – 0.97 oz • inch)
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)
0.15 – 0.53 mN • m
(0.021 – 0.076 oz • inch)
more than 5.88 mN • m
(more than 0.83 oz • inch)
more than 5.88 mN • m
(more than 0.83 oz • inch)
TAPE SECTION 0 dB = 0.775 V
• Standard Output Level Output terminal HP OUT
load impedance 32 Ω
output signal level 0.25 V (–10 dB)
• Test T ape
Type Signal Used for
WS-48A 3 kHz, 0 dB tape speed adjustment
Tape Speed Adjustment
Procedure:
Mode: playback
test tape WS-48A (3 kHz, 0 dB)
set
i
jack (J391)
Adjust so that the value on the digital frequency counter is 3,000 Hz.
digital frequency counter
Ω
32
Tape Tension Measurement
Mode Tension meter Meter Reading
FWD CQ-403A
more than 100 g
(more than 3.53 oz)
Specification Value:
Digital frequency counter
2,940 to 3,060 Hz
Adjust so that the frequency at the beginning and that at the end of tape winding are between 2,970 to 3,030 Hz.
Adjustment Location:
16
Tape speed adjustment control inside motor (M801)
CFD-G550CP
)
TUNER SECTION 0 dB = 1 µV
• AM Section
Setting:
RADIO BAND•AUTO PRESET button: AM
AM RF signal generator
30% amplitude modulation by 400 Hz signal
• FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
FM RF signal generator
75 kHz frequency deviation by 1 kHz signal output level : as low as possible
• Connecting Level Meter (FM and AM)
set
i
jack (J391)
Put the lead-wire antenna close to the set.
0.01
µ
F
level meter (range: 0.5–5 V ac
32
Ω
TP (FM IN)
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 530 kHz 1,710 kHz Reading on Digital voltmeter 1.0 ± 0.05 V 5.3 ± 0.7 V Adjustment Part L4 <confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 CT3
620 kHz 1,400 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7 MHz
set
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz Reading on Digital voltmeter 1.3 ± 0.3 V 3.0 ± 0.2 V Adjustment Part <confirmation> L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
87.5 MHz 108 MHz
Adjustment Location: See page 18.
• Connecting Digital Voltmeter (FM and AM)
digital voltmeter
Ω
100 k
TP (VT)
•Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.
17
CFD-G550CP
R732
Adjustment Location:
– MAIN board (component side) –
TP (FM IN)
(CONDUCTOR SIDE)
T1
AM
IF
ADJUSTMENT
ADJUSTMENT
T2
FM
IF
T1
T2
L1
L3
CT1
IC1
ADJUSTMENT
CT1, L1
FM
TRACKING
ADJUSTMENT
L2
L2
FM
FREQUENCY
COVERAGE
CT3, L3
AM
TRACKING
ADJUSTMENT
CT3
L4
TP (VT)
(CONDUCTOR SIDE)
L4
AM
FREQUENCY
COVERAGE
ADJUSTMENT
IC2

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 between IC701 pin 4 and pin qa (or TP (RF) and TP (VC).
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the N X (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)
VOLT/DIV : 50 mV (10 : 1 probe in use) TIME/DIV : 500 nS
RF level :
0.85 ± 0.2 Vp-p
When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity.
Test Point:
– CD/MP3 board (side B) –
M701
C723
Q701
R707
C705
C704
R708
C710
R709
C711
C744
R759
C712
R757
R726
C746
C709
R730
R704
R710
R711
R702
R755
R729
C706
R764
R728
R706
C707
R758
R756
C740
C703
C708
R727
C713
R703
C701
R705
C714
C716
R701
CNP701
C715
R745
C717
C743
C719
R716
R725
R763
C718
R724
C742
C750
R719
C720
R721
R731
R720
C745
C76
C763
C751
R733
R723
R722
IC701
C721
18
TP
(RF)
TP
(VC)
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