Sony ICFCD-555-TV Service manual
ICF-CD555TV
SERVICE MANUAL
Ver. 1.3 2005.10
SPECIFICATIONS
US Model
Canadian Model
Model Name Using Similar Mechanism ZS-D10
Optical Pick-up Block Name KSM-900AAA
Optical Pick-up Name KSS-900A
AUDIO POWER
SPECIFICATIONS
(US model only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 6–ohm loads, both channels driven from 100 –
10,000 Hz; rated 1.4 W per channel-minimum RMS
power, with no more than 10 % total harmonic
distortion in AC operation.
TV section
Television system: American TV standard/NTSC
Channel coverage:
VHF: 2–13/UHF: 14–69/CATV: 1–125
Antenna:
75-ohm external antenna terminal for VHF/UHF
Display type: Wide LCD color monitor
Size: 7 inches
System: TFT active matrix
Number of pixel: 336,960 pixels
Input: 1 video, 1 audio
CD player section
System: Compact disc digital audio system
Laser diode properties: Material: GaAlAs
Wavelength: 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.)
Frequency response: 20 – 20,000 Hz
Wow and flutter: Below measurable limit
dB
Radio section
Frequency range:
FM: 87.5 – 108 MHz
AM: 530 – 1,710 kHz
General
Time display: 12-hour system
Speaker: 77 mm (3
Power outputs:
1.8 W + 1.8 W (at 10% harmonic distortion)
Power requirements: 120 V AC, 60 Hz
Dimensions:
Approx. 400 × 104 × 323 mm (w/h/d)
(Approx. 15
projecting parts and controls
Mass: Approx. 4.2 kg (9 lb 4.2 oz)
Supplied accessories:
Mounting screws (4), Template (1),
Spacers (4), Remote commander (1)
Design and specifications are subject to change
without notice.
1
⁄8 inches) dia, 6 Ω
3
⁄4× 4 1⁄8× 12 3⁄4 inches) incl.
9-877-644-04 Sony Corporation
2005J05-1 Personal Audio Group
© 2005.10 Published by Sony Engineering Corporation
LCD-TV CD KITCHEN CLOCK RADIO
ICF-CD555TV
r
Ver. 1.1
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.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 °C dur-
ing 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.
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)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
About CD-Rs/CD-RWs
This unit 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.
To Exposed Metal
Parts on Set
AC
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
Ω
Earth Ground
voltmete
(0.75 V)
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 COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU D ANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
2
ICF-CD555TV
SECTION 1
SER VICING NOTES
TABLE OF CONTENTS
1. SERVICING NOTES .............................................. 3
2. GENERAL .................................................................. 4
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 5
3-2. CD Lid, Cabinet (Upper) ................................................ 5
3-3. CD Tray Assy .................................................................. 6
3-4. CD Tray (Lower) ............................................................. 6
3-5. Optical Pick-up Block (KSM-900AAA) ........................ 7
3-6. Optical Pick-up (KSS-900A) .......................................... 7
3-7. DSP Case (Rear) ............................................................. 8
3-8. TV Board ......................................................................... 8
3-9. LCD Unit (LCD1) ........................................................... 9
3-10. The Cable Processing Method which Connects
a MAIN Board and TV Board ........................................ 9
4. TEST MODE............................................................. 10
5. ELECTRICAL ADJUSTMENTS
Tuner Section ................................................................. 13
CD Section ..................................................................... 15
Monitor Section.............................................................. 16
6. DIAGRAMS
6-1. Block Diagram – CD Section – .................................... 21
6-2. Block Diagram – TUNER Section – ............................ 22
6-3. Block Diagram – MONITOR Section – ....................... 23
6-4. Block Diagram – MAIN Section – ............................... 24
6-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 25
6-6. Printed Wiring Boards – CD Section – ........................ 26
6-7. Schematic Diagram – CD Section – ............................. 27
6-8. Printed Wiring Board – TUNER Section – .................. 28
6-9. Schematic Diagram – TUNER Section – ..................... 29
6-10. Printed Wiring Boards – MAIN Section – ................... 30
6-11. Printed Wiring Boards – PANEL Section – ................. 31
6-12. Schematic Diagram – MAIN Section (1/3) –............... 32
6-13. Schematic Diagram – MAIN Section (2/3) –............... 33
6-14. Schematic Diagram – MAIN Section (3/3) –............... 34
6-15. Schematic Diagram – MONITOR Section (1/3) –....... 35
6-16. Schematic Diagram – MONITOR Section (2/3) –....... 36
6-17. Schematic Diagram – MONITOR Section (3/3) –....... 37
6-18. Printed Wiring Board
– MONITOR Section (Component Side) – ................... 38
6-19. Printed Wiring Board
– MONITOR Section (Conductor Side) –..................... 39
6-20. Printed Wiring Boards
– AMP/POWER SUPPL Y Section – ............................. 40
6-21. Schematic Diagram
– AMP/POWER SUPPL Y Section – ............................. 41
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 objectiv e lens.
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 viscou-s (sticky, less prone to flow)
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.
7. EXPLODED VIEWS
7-1. Cabinet (Upper) Section ................................................. 53
7-2. Cabinet (Front) Section ................................................... 54
7-3. Cabinet (Lower) Section-1.............................................. 55
7-4. Cabinet (Lower) Section-2.............................................. 56
7-5. TV Assy Section.............................................................. 57
7-6. MAIN Board Section ...................................................... 58
7-7. CD Tray Assy Section..................................................... 59
7-8. Optical Pick-up Section (KSM-900AAA) ..................... 60
8. ELECTRICAL PARTS LIST .............................. 61
3
ICF-CD555TV
SECTION 2
GENERAL
This section is extracted from
instruction manual.
The preset 3, CLOCK, VOLUME + and CD u buttons have a tactile dot.
Turn
Push
TIMER indicator
AC power cord
Features
¥ Super Slim under the counter LCD-TV
¥ 7" wide-screen LCD Color panel display
¥ TV/Cable Tuner
¥ TV stereo/Auto SAP Function
¥ MEGA Xpand function to get the effect of
expansion of the sound field
¥ Easy Set, One Touch Cooking Timer
¥ Magnetic Remote Commander
Basic Connections
(Connecting Cable
TV or Antenna)
Connecting directly to cable or an antenna
Connecting a VCR
and TV
Use this hookup if you subscribe to a cable TV
System that does not require a cable box.
B
C
Setting the Clock
1
Plug in the kitchen clock radio.
The display will flash AM 12:00.
2
Press CLOCK for a few seconds.
You will hear a beep and the hour will start to
flash in the display.
3
Press TIME SET + or — until the correct
hour appears in the display.
4
Press CLOCK once.
The minutes will flash.
5
Repeat steps 3 and 4 to set the minutes.
After setting the minutes, press CLOCK to start
the counting of the seconds, and you will hear two
short beeps.
To set the current time quickly, hold down TIME
SET + or —.
12-hour system: AM 12:00 = midnight
In step 5, when you press CLOCK after the minute
setting to activate the clock, the seconds start
counting from zero.
Size AAA
(R03) × 2
The number 5 and the VOL +
buttons have a tactile dot.
4
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SET
ICF-CD555TV
SECTION 3
DISASSEMBLY
3-2. CD LID, CABINET (UPPER)
(Page 5)
3-3. CD TRAY ASSY
(Page 6)
3-4. CD TRAY (LOWER)
(Page 6)
3-5. OPTICAL PICK-UP BLOCK
(KSM-900AAA) (Page 7)
3-6. OPTICAL PICK-UP (KSS-900A)
(Page 7)
Note: Follow the disassembly procedure in the numerical order given.
3-7. DSP CASE (REAR)
3-8. TV BOARD
3-9. LCD UNIT (LCD1)
3-10.THE CABLE PROCESSING METHOD
3-2. CD LID, CABINET (UPPER)
(Page 8)
(Page 8)
(Page 9)
WHICH CONNECTS A MAIN BOARD
AND TV BOARD
(Page 9)
2
two screws
4
twelve BV tapping screws
(B3)
3
CD lid
1
Open the CD tray.
4
ten BV tapping screws
(B3)
5
cabinet (upper)
5
ICF-CD555TV
3-3. CD TRAY ASSY
5
flexible flat (17 core) cable
(CN403)
6
flexible flat (16 core) cable
(CN410)
9
CD tray assy
7
connector
(CN406)
7
two connectors
(CN302, CN303)
7
two connectors
(CN501, CN504)
8
terminal
(CN304)
7
two connectors
(CN502, CN503)
7
connector
(CN409)
2
four BV tapping screws
(B3)
3
4
connector
(CNP1)
Lift up the TUNER board.
1
Close the CD tray.
3-4. CD TRAY (LOWER)
3
pulley
7
insulating sheet (CD tray)
1
2
PWH tapping screw
(B2.6)
belt
4
gear
6
CD tray (lower)
5
seven P tapping screws
(B2.6)
6
3-5. OPTICAL PICK-UP BLOCK (KSM-900AAA)
2
1
connector
(CNP706)
OP flexible board
(CNP705)
3
insulator
ICF-CD555TV
3
two insulators
3-6. OPTICAL PICK-UP (KSS-900A)
7
sled screw assy (780E)
1
screw
(2
×
8)
5
rack spring (780C)
4
optical pick-up block (KSM-900AAA)
4
screw
×
4)
(B1.7
8
optical pick-up
(KSS-900A)
2
holder (780C)
3
gear B (780C)
6
7
ICF-CD555TV
3-7. DSP CASE (REAR)
2
1
3
four screws
7
0
slider (DSP) (R)
case (shaft)
four claws
four claws
5
9
6
two screws
7
7
four claws
slider (DSP) (L)
five claws
8
DSP case (rear)
3-8. TV BOARD
3
two connectors
(CN1402, CN1404)
7
bracket (DSP)
1
two screws
4
Push the button (release).
1
two screws
6
screw
2
shield (DSP)
5
four screws
8
TV board
3
three connectors
(CN1401, CN1403, CN1801)
1
two screws
1
two screws
4
LCD flexible board
(CN1802)
6
screw
7
bracket (DSP)
8
3-9. LCD UNIT (LCD1)
1
two screws
2
two brackets (DSP)
3
insulating sheet (DSP)
4
LCD unit (LCD1)
ICF-CD555TV
3-10. THE CABLE PROCESSING METHOD WHICH CONNECTS A MAIN BOARD AND TV BOARD
Note: When connecting cable, set it as shown in the figure.
ditch
MAIN board
(CN501, CN502, CN503, CN504)
ditch
CABLE
CABLE
CN1401
arm (release)
ditch
cabinet (lower)
adhesive tape
case (front)
TV board
CN1404CN1402CN1403
9
ICF-CD555TV
SECTION 4
TEST MODE
LCD TEST MODE
Procedure:
1. Turn the power ON while pressing simultaneously three keys
of [2], [VOLUME --] and [TV/VIDEO].
2. The microprocessor version will be displayed on the LCD.
3. Press the Z key. The LCD display will become as follows.
LCD display
SHUFFLE
REP 1 ALL
VOL
TRACK
MEGABASS
MEGAXpand
REC
MESSAGE
1 2 3 4 5
RADIOVIDEO TIMER
TV AM
WEATHER
FM12 PM
CD
CH
MHz
kHz
4. The display corresponding to a key is turned off, if a key on
the set is pressed.
Key Corresponding Table
Key Segment
CLOCK AM, PM, : (colon),
TIMER TIMER , TIMER LED
1 1a, 1d, 1e, 1f, 1g
2 2c, 2f
3 3e, 3f
4 4a, 4d, 4e
5 5b, 5e
VOLUME – – VOL –
VOLUME + . (dot), MHz, kHz, CH
. 6b
> 6a, 6c, 6d, 6e, 6f, 6g
BAND RADIO, WEATHER, FM1, FM2
s 1b, 1c, 2a, 2b, 2d, 2e, 2g, 3a, 3b, 3c, 3d, 3g,
4b, 4c, 4f, 4g, 5a, 5c, 5d, 5f, 5g
7 CD, TRACK , H
MODE , SHUFFLE, REP, 1, ALL
TV/VIDEO VIDEO
TV ON TV
SOUND MEGA B ASS, MEGA EXPAND
TV MENU REC, MESSAGE, MB number underline
ENTER 1, 2, 3, 4, 5, N
5. After all keys on the set were pressed, press the Z key, and
the test mode will be released.
10
ICF-CD555TV
CD TEST MODE
Procedure:
1. Connect 120 kΩ and 47 kΩ resistors in parallel to the TP604 on the SIDE-KEY board, and short another end of resistors to the GND,
and the CD TEST MODE will be activated.
2. Insert a CD disc.
3. Turn the power ON. Press the 7 key.
4. The following shows the state transition table for each key operation in respective sub modes of CD TEST MODE.
5. Turn the power OFF to release the CD TEST MODE.
State T ransition T able
If each key is pressed in respective sub modes, the mode will transit to the sub modes listed in table.
Mode Description LCD Key
Main Sub
INT State when TEST MODE is activated.
STOP STOP0 State when s key is pressed once from initial state.
STOP Automatically adjusted value is held.
FOCUS FOCUS0 Auto focus transfer mode
FOCUS Focus servo ON state.(CLV-S, tracking/sled, servo OFF)
It will be referred to as LPC ON if focus carries out on.
F.LPC OFF LPC OFF in focus state.
ALL ALSV State where all servo systems are turned ON.
SERVO ALPC OFF State where all servo systems are turned ON.(LPC OFF)
TGUP State with tracking gain up in all servo systems are turned ON.(LPC ON)
AUTO Mode in which automatic adjustment is made at once.
SLED SLDF Sled is fed outward in stop state.
SLDR Sled is fed inward in stop state.
F.SLED FCSF Sled is fed outward in focus state.
FCSR Sled is fed inward in focus state.
s7 .> BAND TV ON .> Processing
0STOP0 FOCUS0
1 FOCUS0 SLDR SLDF EF Normal
2STOP0 FOCUS0 SLDR SLDF Normal
3STOP FOCUS
4STOPF.LPC FCSR FCSF EF AUTO
5STOP ALSV FCSR FCSF SCURVE
7STOP ALPC OFF FCSR FCSF EF AUTO
8STOP TGUP FCSR FCSF
9STOP ALSV FCSR FCSF
b
cSTOPSTOPSTOPSTOPSTOP SLDF
dSTOPSTOPSTOPSTOPSTOP SLDR
E FOCUS FOCUS FOCUS FOCUS FOCUS FCSF
F FOCUS FOCUS FOCUS FOCUS FOCUS FCSR
OFF
Long pressed
end
CD-JUMP TEST MODE
Procedure:
1. Connect the oscilloscope to TP (TE) and TP (VREF) on the
CD board.
Connecting Location: CD board (See page 13)
2. Connect 270 kΩ and 47 kΩ resistors in parallel to the end of
TP604 on the SIDE-KEY board, and short another end of resistors to the GND, and the CD-JUMP TEST MODE will be
activated.
3. Insert a CD disc.
4. Turn the power ON. Press the
5 . If the [MODE] key is pressed, you can jump in fast feed or fast
reverse direction with the > or . key by the jump
amount set in table 1.
6. Turn the power OFF to release the CD-JUMP TEST MODE.
Table 1
LCD
REP ALL TRACK + 1 TRACK - 1
SHUFFLE TRACK + 10 TRACK - 10
SHUFFLE, REP TRACK + 100 TRACK - 100
Waveform of TP (TE) and TP (VREF) output in each mode is as
follows.
7 key.
Key
>.
REPEAT – ALL mode
500 µs/div
SHUFFLE mode
1 ms/div
SHUFFLE – REPEAT mode
10 ms/div
Connecting Location:
– SIDE-KEY BOARD (Conductor Side) –
TP604
11
ICF-CD555TV
TV TEST MODE
Procedure:
1. Turn the power ON while pressing simultaneously two keys
of [2] and [VOLUME --].
2. When the TV test mode is activated, the TV monitor will become as follows.
SR7570 TEST MODE MENU
1. INITIAL MENU
2. FOR FACTORY
3. LCD SETTING
4. LOAD DEFAULT
5. TUNER TEST
Ver.7570S100
3. Five items can be changed over by pressing the [TV MENU]
key.
4. The selected item is displayed in red and the items not selected
are displayed in cyan. (“Ver. 7570S100” is displayed in red.)
5. You can enter the selected item by pressing the [ENTER] key.
6. Also, an item can be selected directly with the [1] to [5] keys
on the set or remote commander (RMT-CCD555A).
1. INITIAL MENU (TV MENU PRESET)
• TV menu item is initialized.
Procedure:
1. Press the [TV MENU] key to select the “INITIAL MENU” on
the main screen.
2. Each item of TV menu can be initialized, if pressing the
[ENTER] key.
2. FOR FACTORY (FOR ADJUSTMENT)
• It is used at the time of adjustment.
Procedure:
1. Press the [TV MENU] key to select the “FOR FACTORY” on
the main screen.
2. A changing between setting item and “EXIT” is possible by
pressing the [TV MENU] key. (The selected item is displayed
in red)
3. If the [ENTER] key is pressed when the setting item has been
selected, settable items can be changed over, and the value of
the selected item can be adjusted by pressing the . /
> keys. (For details, refer to VIDEO BUS ADJUSTMENT
(See page 17))
4. The main screen comes back if the [ENTER] key is pressed
when “EXIT” has been selected.
Note: The same operation is also carried out by pressing the keys on the
remote commander.
3. LCD SETTING
This mode is not used in servicing.
4. LOAD DEFAULT
• It carries out, only when EEPROM (IC1451) is exchanged.
Procedure:
1. Press the [TV MENU] key to select the “LOAD DEFAULT”
on the main screen.
2. All settings can be initialized, if pressing the [ENTER] key.
(In addition to the “INITIAL MENU”, set value of RGB
decoder (IC1501) and tuner N value)
5. TUNER TEST
This mode is not used in servicing.
12
r
SECTION 5
ELECTRICAL ADJUSTMENTS
ICF-CD555TV
TUNER SECTION 0 dB=1 µV
[AM]
Setting:
Function: RADIO
Band: AM
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
[FM]
Setting:
Function: 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)
AMP board
CN301 pin
6
Ω
AMP board
CN301 pin
AMP board
CN301 pin
6
Ω
AMP board
CN301 pin
1
level meter
+
–
2
1
level meter
+
–
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 ± 0.1 V
Confirmation 1,710 kHz 5.3 ± 0.7 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3 580 kHz
CT3 1,490 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 87.5 MHz 1.3 ± 0.3 V
Confirmation 108 MHz 3.0 ± 0.2 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1 87.5 MHz
CT1 108 MHz
Adjustment and Connecting Location:
TUNER board (See page 14)
digital voltmete
TUNER board
TP (VT)
TP (GND)
100 kΩ
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer capacitors.
13
ICF-CD555TV
t
Adjustment and Connecting Location:
– TUNER BOARD (Component Side) –
AM VCO Voltage Adjustment
L4
L2
FM VCO Voltage Adjustment
CT3
– TUNER BOARD (Conductor Side) –
TP
(VT)
L3
AM T rac king Adjustment
TP
(ANT)
T2 FM IF Adjustment
T1 AM IF Adjustment
L1
FM T rac king Adjustmen
CT1
TP
(GND)
14
CD SECTION
Perform all CD section check in the test mode.
FOCUS BIAS CHECK
Procedure:
1. Connect the oscilloscope to TP (RF) and TP (VREF) on the
CD board.
2. Set the CD TEST MODE. (Refer to CD TEST MODE (See
page 9))
3. Insert the test disc (YEDS-18). (Part No. 3-702-101-01) (CD)
4. Press the 7 key. (LPC ON)
5. 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.
6. Press the 7 key. (LPC OFF)
7. Perform confirmation in the same manner as step 5.
8. Press the s key.
9. Change the test disc (TCD-W082L). (Part No. J-2502-063-2)
(CD-RW)
10. Perform confirmation in the same manner as step 4 to 7.
ICF-CD555TV
• RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
CD:
1.1
±
0.2 Vp-p (LPC ON)
1.1
±
0.3 Vp-p (LPC OFF)
CD-RW:
1.0 ± 0.2 Vp-p (LPC ON)
0.9 ± 0.3 Vp-p (LPC OFF)
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
Connecting Location:
– CD BOARD (Conductor Side) –
TP
IC702
(RF)
TP
(TE)
IC701
TP
(VREF)
15
ICF-CD555TV
)
)
)
)
)
)
)
MONITOR SECTION
5-1. VOLTAGE CHECK
5-1-1. VDD (3.3V) CHECK
Connection:
digital
voltmeter
TP1904
set
Checking Procedure:
1. Connect a digital voltmeter to the TP1904 on the TV board.
2. Check that the reading of digital voltmeter is 3.3 ± 0.2 V.
5-1-2. VGH (17.0V) CHECK
Connection:
TP1912
set
Checking Procedure:
1. Connect a digital voltmeter to the TP1912 on the TV board.
2. Check that the reading of digital voltmeter is 17.5 ± 0.5 V.
5-1-3. VSS (–13.0V) CHECK
Connection:
TP1911
set
Checking Procedure:
1. Connect a digital voltmeter to the TP1911 on the TV board.
2. Check that the reading of digital voltmeter is –12.5 ± 0.5 V.
5-1-4. 13.5V CHECK
Connection:
TP1401
set
Checking Procedure:
1. Connect a digital voltmeter to the TP1401 on the TV board.
2. Check that the reading of digital voltmeter is 11.5 ± 0.5 V.
+
–
TP1403 (GND
digital
voltmeter
+
–
TP1403 (GND
digital
voltmeter
+
–
TP1403 (GND
digital
voltmeter
+
–
TP1403 (GND
5-1-5. 3.9V CHECK
Connection:
digital
voltmeter
TP1411
set
+
–
TP1403 (GND
Checking Procedure:
1. Connect a digital voltmeter to the TP1411 on the TV board.
2. Chec k that the reading of digital voltmeter is 3.85 ± 0.2 V.
5-1-6. 7.5V CHECK
Connection:
digital
voltmeter
TP1907
set
+
–
TP1403 (GND
Checking Procedure:
1. Connect a dig ital voltmeter to the TP1907 on the TV board.
2. Chec k that the reading of digital voltmeter is 7.3 ± 0.2 V.
5-2. PLL ADJUSTMENT
Connection:
digital
voltmeter
TP1651
set
+
–
TP1403 (GND
Adjusting Procedure:
1. Connect a dig ital voltmeter to the TP1651 on the TV board.
2. Adjust the RV1651 so that the reading of digital voltmeter is
2.2 ± 0.15 V.
5-3. V COM ADJUSTMENT
Connection:
TP1955
osclloscope
set
Adjusting Procedure:
Connect an oscilloscope to the TP1955 on the TV board.
5-3-1. VOLTAGE SET UP ADJUSTMENT
Adjust the set so that the A level of the waveform on the
oscilloscope is 6.6 ± 0.1 Vp-p. (Refer to the 5-7. video bus adjustment (See page 17))
+
–
TP1403 (GND)
16
A
ICF-CD555TV
V
V
V
5-3-2. POSITION SET UP ADJUSTMENT
Check the B level of the waveform on the oscilloscope is 4.2 ±
0.1 Vp-p and adjust the R V1551 so that the C level of the wav eform
on the oscilloscope is –2.4 ± 0.1 Vp-p.
B
0
C
5-4. INVERTER HIGH VOLTAGE CHECK
Connection:
Checking Procedure:
Connect an oscilloscope to the TP1805 and TP1806 on the TV
board.
5-4-1. HIGH VOLTAGE CHECK
Check that the reading of oscilloscope is 550 ± 150 V (rms).
5-4-2. FREQUENCY CHECK
Check that the reading of oscilloscope is 70 ± 3 kHz.
set
TP1805
osclloscope
(high resistance probe)
+
–
TP1806
5-7. VIDEO BUS ADJUSTMENT
Connection: (5-7-1 to 5-7-9)
INPUT VIDEO jack
(JK301)
NTSC pattern
generator
set
Condition: (5-7-1 to 5-7-9)
Input the NTSC video signal (10 step (no burst)) (1 Vp-p 75 Ω) to
the INPUT VIDEO jack (JK301) on the MAIN board from NTSC
pattern generator.
Adjusting Procedure:
1. Set the TV test mode (Refer to TV TEST MODE (See page
12).
2. Press the [TV MENU] key to select “LOAD DEFAULT”, and
press the [ENTER] key to write initial v alues to the EEPR OM.
Note: It carries out, only when EEPROM (IC1451) is exchanged.
3. Press the [TV MENU] key to select “FOR FACTORY”, and
press the [ENTER] key to enter the adjustment mode.
4. If entering the adjustment mode, press the [TV MENU] key to
select item, and press the [ENTER] key to execute all
adjustment items mentioned below.
TP1958 or
TP1959 or
TP1960
osclloscope
+
–
TP1403 (GND)
5-5. OSD DOT CLOCK CHECK
Connection:
frequency counter
(high impedance probe)
TP1554
set
+
–
TP1403 (GND)
Adjusting Procedure:
1. Connect an frequency counter to the TP1554 on the TV board.
2. Check that the reading of frequency counter is 6.5 ± 0.2 MHz.
5-6. NTSC SUB CARRIER CHECK
Connection:
frequency counter
(high impedance probe)
TP1508
set
Checking Procedure:
1. Connect an frequency counter to the TP1508 on the TV board.
2. Check that the reading of frequency counter is 3.579545 ±
0.0001 MHz.
+
–
TP1403 (GND)
5-7-1. GAMMA 1 ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope to the TP1959 on the TV board.
2. Adjust the . / > keys so that the H level of the wave-
form on the oscilloscope is 2.1 ± 0.1 Vp-p.
H
0
5-7-2. GAMMA 2 ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope to the TP1959 on the TV board.
2. Adjust the . / > keys so that the J level of the wave-
form on the oscilloscope is 3.0 ± 0.1 Vp-p.
J
0
17
ICF-CD555TV
V
V
V
V
V
V
V
5-7-3. Y GAIN (LUMINANCE SIGNAL CONTRAST
LEVEL) ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope to the TP1959 on the TV board.
2. Adjust the . / > keys so that the D level of the wave-
form on the oscilloscope is 3.25 ± 0.1 Vp-p.
D
0
5-7-4. BLACK LIMIT (BLACK LIMITER LEVEL)
ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope to the TP1959 on the TV board.
2. Adjust the . / > keys so that the E level of the wave-
form on the oscilloscope is 1.0 ± 0.1 Vp-p.
5-7-7. B-SUB BRT (B-CH SUB BRIGHT) ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope of 1 step voltage to the TP1960 on
the TV board.
2. Adjust the . / > keys so that the G level of the wave-
form on the oscilloscope is 1.0 ± 0.1 Vp-p.
G
0
5-7-8. R-SUB CONT (R-CH SUB CONTRAST)
ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope of 10 step voltage to the TP1958 on
the TV board.
2. Adjust the . / > keys so that the D level of the wave-
form on the oscilloscope is 3.25 ± 0.1 Vp-p.
D
0
5-7-5. WHITE LIMIT (WHITE LIMITER LEVEL)
ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope to the TP1959 on the TV board.
2. Adjust the . / > keys so that the F level of the wave-
form on the oscilloscope is 3.9 ± 0.05 Vp-p.
F
0
5-7-6. R-SUB BRT (R-CH SUB BRIGHT) ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope of 1 step voltage to the TP1958 on
the TV board.
2. Adjust the . / > keys so that the G level of the wave-
form on the oscilloscope is 1.0 ± 0.1 Vp-p.
D
0
5-7-9. B-SUB CONT (B-CH SUB CONTRAST)
ADJUSTMENT
Adjusting Procedure:
1. Connect an oscilloscope of 10 step voltage to the TP1960 on
the TV board.
2. Adjust the . / > keys so that the D level of the wave-
form on the oscilloscope is 3.25 ± 0.1 Vp-p.
D
0
18
G
0
Connection: (5-7-10 to 5-7-12)
INPUT VIDEO jack
(JK301)
NTSC pattern
generator
set
5-7-10. VCO FREE RUN ADJUSTMENT
Condition:
Input the NTSC video signal (10 step (no burst)) (1 Vp-p 75 Ω) to
the INPUT VIDEO jack (JK301) on the MAIN board from NTSC
pattern generator.
Adjusting Procedure:
Adjust the . / > keys so that a screen on the monitor may
become normal.
5-7-11. PLL/V POS ADJUSTMENT
ICF-CD555TV
Condition:
Input the NTSC video signal (monoscope) (1 Vp-p 75 Ω) to the
INPUT VIDEO jack (JK301) on the MAIN board from NTSC
pattern generator.
Adjusting Procedure:
Press the . / > keys to adjust so that the position of screen
on the monitor becomes vertically symmetric.
5-7-12. H POS ADJUSTMENT
Condition:
Input the NTSC video signal (monoscope) (1 Vp-p 75 Ω) to the
INPUT VIDEO jack (JK301) on the MAIN board from NTSC
pattern generator.
Adjusting Procedure:
Press the . / > keys to adjust so that the position of screen
on the monitor becomes horizontally symmetric.
19
ICF-CD555TV
Connecting and Adjustment Location:
– TV BOARD (Component Side) –
RV1551
V COM Adjustment
RV1651
PLL Adjustment
TP1805 TP1806
– TV BOARD (Conductor Side) –
TP1959
TP1958 TP1960
TP1508
TP1955
TP1651
TP1904
TP1907
TP1912
TP1911
TP1403
TP1401
20
TP1411
TP1554
6-1. BLOCK DIAGRAM – CD Section –
ICF-CD555TV
SECTION 6
DIAGRAMS
DETECTOR
A
D
C
B
F
E
OPTICAL PICK-UP
BLOCK
(KSM-900AAA)
LASER DIODE
PD
RF AMP, FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR, CLV SERVO,
PD1
PD2
I-V AMP
F
E
LD
LD
AUTOMATIC
POWER
CONTROL
Q701
FIN2
8
FIN1
7
TIN2
10
TIN1
9
LDD
80
TBAL
APC
LPF
+
MIX
AUDIO
ADJUST
LDS
79
DIGITAL FILTER, D/A CONVERTER
LPF
TE
13FE15
IC701
A/D
3
EFMIN
D/A
SLISE LEVEL
CONTROL
SW
CONT4
25
RUPTURE
DETECT
SERVO
PROCESSOR
RF
EQ
AGC
SW
TRACK
JUMP
4
PH
BH
S/H
TDO21FDO23SLDO22SPDO
20
RAM
ERROR
CORRECTION
AUDIO CD
RAM
GENERAL PURPOSE
PORTS
INTERPOLATION
MUTE
ATTENUATION
DEEMPHASIS
CLV, CAV
CONTROL
CONT1
72
8FS
DIGITAL
FILTER
PLL
VCEC
COMMAND
INTERFACE
RES
WRQ
∗
∗
66
65
61CE62CL63DI64
1 BIT
DAC
AUDIO
OUT
FRAME SYNC
DETECT,
PROTECT, INSERT,
EFM DECODE
CLOCK
GENERATOR
DO
LPF
DRF
LCHO
RCHO
DOUT
FSEQ
XOUT
DRF
XIN
42
R-CH
45
39
31
48
49
67
X701
16.9344MHz
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: CD PLAY
CD LCH
39 FSEQ
57 DRF
SYSTEM
CONTROLLER
IC401
(1/2)
A
(Page 24)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
PD
T+
T–
F+
F–
M701
(SLED)
M702
(SPINDLE)
S701
(LIMIT)
When the optical pick-up
ON :
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
T+
12
T–
11
F+
17
F–
18
SL+
M
M
27
SL–
26
SP+
2
SP–
1
IC702
TRACKING
COIL DRIVE
FOCUS
COIL DRIVE
SLED
MOTOR DRIVE
SPINDLE
MOTOR DRIVE
TIN
SLIN
SPIN
9
FIN
19
25
3
7MUTE
is inner position
M301
CD TRAY
OPEN/CLOSE
S702
CD TRAY
CLOSE DETECT
S703
CD TRAY
OPEN DETECT
CD TRAY OPEN/CLOSE
MOTOR DRIVE
IC305
A OUT
M
8
B OUT
7
A IN
B IN
3
2
53 CD DATA IN
54 CD DATA
55 CD CLK
56 CD CE
50 WRQ
58 XRST
42 CD CLOSE DET
61 CD OPEN DET
CD CLOSE
51
CD OPEN
60
2121
ICF-CD555TV
6-2. BLOCK DIAGRAM – TUNER Section –
T2
FM IFT
T2
FM IF
(Page 24)
ANT
B
L1
FM RF
L3
AM FERRITE-ROD
ANTENNA
CT3
AM TRACKING
CT1, L1
FM TRACKING
CT1
D3
(1/2)
CT3, L3
FM/AM RF AMP, MIX, OSC,
2
24
D1
22
AM VCO VOLTAGE
L4
AM OSC
FM/AM IF AMP, DET, MPX
IC1
FM
RF IN
FM
RF AMP
FM
RF OUT
AM
RF IN
AM
RF AMP
L4
FM
MIX
FM
OSC
AM
MIX
AM
OSC
AM OSC
20 21
FM OSC
BUFFER
BUFFER
MIX OUT
4 7
T1
AM IFT
T1
AM IF
OSC
OUT
19
L2
FM VCO VOLTAGE
L2
FM OSC
CF2
CF4
10
QUAD
FM
IF IN
FM IF
AMP
AM
IF IN
AM IF
6
AMP
FM
DET
AM
DET
IF
BUFFER
IF OUT
17 18
AF
BUFFER
LEVEL
DET
DET
OUT
ST
IND
ST IND
MPX
IN
AF
16
15
AMP
MPX
LPF1/BAND
LPF2/MO-ST
13
14
MUTE
STEREO/
MONO,
FM/AM
L-OUT
R-OUT
12
11
TU LCH
R-CH
C
(Page 24)
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: FM
: AM
X1
75kHz
20
19
FM/AM PLL
IC2
XOUT
XIN
(2/2)
REFERENCE
DIVIDER
D3
D2
VT B+
LOW-PASS
FILTER
6
FM/AM
LP-OUT
UNLOCK
DETECT
LOW-PASS
FILTER
PD
LP-IN
PHASE
DETECTOR/
CHARGE PUMP
12 BIT
PROGRAMMABLE
DIVIDER
SWALLOW
COUNTER
111218
FMIN
AMIN
1/2
SHIFT REGISTER & LATCH
10 9
IF IN
UNIVERSAL
COUNTER
ST-IND
BAND
7
BAND
13817 16
MO/ST
CCB
INTERFACE
PLL DATA, PLL CLK,
DI
2
CL
3
CE
1
DO
4
PLL DATA
PLL CLK
PLL CE
COUNT
PLL CE, COUNT
D
(Page 24)
2222
6-3. BLOCK DIAGRAM – MONITOR Section –
ICF-CD555TV
JK301
INPUT
VHF/UHF
VIDEO
TV ANT
R
TU501
TV TUNER UNIT
L
AUDIO
R-CH : R-ch is omitted due to same as L-ch.
SIGNAL PATH
: TV
: VIDEO
: AUX IN (AUDIO)
: AUX IN (VIDEO)
SDATA, SCK,
LATCH, RESET
E
(Page 24)
R-CH
TV/VIDEO
SELECT SWITCH
IC304
12
25 13L OUT
R-CH
24R OUT
5
16DET OUT
99V (MPX)
25V (TU)
145V (F)
265V (D/D)
4SDA
3SCL
15AFT OUT
22MUTE
13RF AGC
20MODE
21F MONO 79 T-FMONO
+9V
TV+5V
AUDIO MODE
SELECT SWITCH
AUDIO MODE
SELECT SWITCH
AGC
Q502
Q503
Q504
S701
DISPLAY
RELEASE
3
SDATA
SCK
LATCH
RESET
14
11
4
9
77
32 T-SDATA
33 T-SCL
46 T-AFT
31 T-MUTE
30 T-AGC
78 T-MODE
37 TFT OPEN
56 TV DATA-SI
58 TV DATA-CLK
57 TV DATA-SO
76 RESET
TV/VIDEO
MUTING
Q104
34
T-A MUTE
D104
R-CH
VIDEO AMP
Q350
SYNC
SEPARATOR
Q1504, 1505
X1501
3.579545MHz
63
VXO-NTSC
52 54 26
57 CIN
46 34
CTRAPOUT
YIN
CSYNCOUT
CSYNCIN
SDATA
SCLK47HSYNCLOCK
48
SYNC DET
Q1502, 1503
66
67 65
SCL
SDA
HDOUT
VDOUT
39
53
32
31
HSYNCLOCK
TRAP
RGB DECODER
IC1501
BUFFER
Q1501
52
VSYNC
CTRAPIN
VDIN35
VD
HD
EEPROM
IC1451
SDA
5
49
EEPROM-SDA
VCOMOUT
R-OUT
G-OUT 21
B-OUT 19
BLAK
36
18
POL
BLAK
SCL
6
50
EEPROM-SCL
R-IN2
G-IN2
B-IN2
YS 17
POL
TV SYSTEM CONTROLLER
OSC
RV1651
PLL
V COM AMP
IC1552
PHASE
COMPARATOR
IC1651
HD
VD
BLAK
POL
28
R
G
B
14
15
16
X1401
4.19MHz
74 64
75
X1
X2
IC1401
16
VR
17
VG
18
VB
BLK
15
HSYNCIN20
VSYNCIN19
OSD DRIVER
IC1551
OSC OUT
OSC IN 8
DATA
SCLK1CSN
3
2
54 55 53
OSD-CLK
OSD-DATA
7
OSD-CS
V COM BIAS
Q1551 – 1553
LCD CONTROLLER
IC1601
33
PD
36
VCO1
37
VCO0
2
HSYNCIN
5
VDBIN
BLACK
8
14
POL
ZOOMZOOM
12
61 62 63
JUST4SIDE1
31
JUST
RV1551
V COM
STV1
STV2
STH1
STH2
CPH1
CPH2
CPH3
CPV
OEV1
OEV2
OEV3
OEH
3
SIDE1
VGH17V
VEE5V
SIDE2
SIDE2
TV LCH
F
TFT-ON
(Page 24)
(Page 24)
G
H
(Page 24)
LIQUID CRYSTAL
DISPLAY MODULE
LCD1
VCOM
VCOM
R
G
B
20
26
23
24
29
27
25
16
19
18
17
80MONITOR ON
60TFT-ON
RED
GREEN
BLUE
VGON (17V)
VDD (3.3V)VDD3V
VEE (5.0V)
VB (2.5V)
VSS (–13.0V)VSS–13V
STV1
STV2
STH1
STH2
CLK1
CLK2
CLK3
CPV
OEV1
OEV2
OEV3
CPV21
MONITOR ON
2323
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