ICF-CD830, ICF-CD830L - Sony Audio Service Manual (repair manual)

Model
ICF-CD830 ICF-CD830L
Pages
53
Size
4.9 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-cd830-icf-cd830l.pdf
Date

View Sony ICF-CD830 / ICF-CD830L Service Manual online

ICF-CD830/CD830L
US Model
Canadian Model
Australian Model
E Model
ICF-CD830
AEP Model
ICF-CD830/CD830L
UK Model
ICF-CD830L
SERVICE MANUAL
CD CLOCK RADIO
SPECIFICATIONS
Model Name Using Similar Mechanism
ICF-CD823
Optical Device Name
KSM-213CDM
Optical Pick-UP Name
KSS-213C
Photo : ICF-CD830
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
 +1
–1.5
 dB
Wow and flutter: Below measurable limit
Radio section
Frequency range:
ICF-CD830
ICF-CD830L
FM
87.5-108 MHz
AM
530-1 710 kHz
FM
87.5-108 MHz
87.5-108 MHz
AM(MW)
530-1 710 kHz
530-1 710 kHz
LW
153-255 kHz
General
Time display:
North and South America, UK and
Australia: 12-hour system
Other countries: 24-hour system
Speaker:
66 mm (2 
5
8
 inches) dia., 4 
Power outputs:
1.2 W + 1.2 W
(at 10% harmonic distortion)
Power requirements:
North and South American model:
120 V AC, 60 Hz
Australian model:
240 V AC, 50 Hz
Other models:
220-230 V AC, 50 Hz
Dimensions:
Approx. 273 
× 94.5 × 194.5 mm (w/h/d)
(Approx. 10 
3
4
 
× 3 
3
4
 
× 7 
3
4
 inches) incl.
projecting parts and controls
Mass:
Approx. 1 705 g (3 lb. 12 oz.)
ICF-CD830L (UK model):
Approx. 1 725 g (3 lb. 13 oz.)
Design and specifications are subject to change
without notice.
Other
countries
North and South
America
Ver 1.1  2001. 08
With SUPPLEMENT-1
Sony Corporation
Personal Audio Company
Shinagawa Tec Service Manual Production Group
9-873-107-12
2001H1600-1
© 2001.8
2
ICF-CD830/CD830L
TABLE  OF  CONTENTS
1. GENERAL
········································································ 4
2. DISASSEMBLY
2-1. UPPER CASE ······························································· 5
2-2. KEY BOARD ································································ 5
2-3. TRANSFORMER BOARD ··········································· 6
2-4. MAIN CHASSIS ··························································· 6
2-5. OPTICAL PICK-UP BLOCK (KSM-213CDM) ·········· 6
3. TEST MODE
·······························································
7
4. ELECTRICAL  ADJUSTMENTS
·····························
9
5. DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION ······························· 10
5-2. BLOCK DIAGRAM (CD830) ···································· 11
5-3. BLOCK DIAGRAM (CD830L) ·································· 12
5-4. SCHEMATIC DIAGRAM
– TUNER SECTION (CD830) – ································· 13
5-5. SCHEMATIC DIAGRAM
– TUNER SECTION (CD830L) – ······························ 14
5-6. SCHEMATIC DIAGRAM
– CD SECTION – ······················································· 15
5-7. SCHEMATIC DIAGRAM
– POWER SECTION – ··············································· 16
5-8. PRINTED WIRING BOARD
– MAIN SECTION – ·················································· 17
5-9. PRINTED WIRING BOARD
– KEY/POWER SECTION – ······································ 18
5-10. SCHEMATIC DIAGRAM
– KEY SECTION – ····················································· 19
5-11. IC BLOCK DIAGRAMS ············································ 20
5-12. IC PIN FUNCTION DESCRIPTION ························· 22
6. EXPLODED  VIEWS
6-1. CABINET SECTION ·················································· 23
6-2. CHASSIS SECTION ··················································· 24
6-3. OPTICAL  PICK-UP  SECTION
(KSM-213CDM) ························································· 25
7. ELECTRICAL  PARTS  LIST
·································
26
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT
À  LA  SÉCURITÉ!
LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  
!
 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  DANS  LES  SUPPLÉMENTS
PUBLIÉS  PAR  SONY.
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
!
  OR  DOTTED  LINE
WITH  MARK  
!
  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS  WHOSE
PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  MANUAL  OR
IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
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 microampers.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a
passive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable.  (See Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
Note 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.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
3
ICF-CD830/CD830L
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  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This Compact Disc player is classified as a CLASS 1
LASER product.
The CLASS 1 LASER PRODUCT label is located on the
bottom exterior.
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
LASER  DIODE  AND  FOCUS  SEARCH
OPERATION  CHECK
1. Open the CD lid.
2. Turn on S401 as following figure.
3. Confirm that the laser diode emission while observing the
objecting lens. When there is no emission, Auto Power Control
circuit or Optical Pick-up is broken.
Objective lens moves up and down once for the focus search.
Insert a precision
screwdriver and
push S401 
laser diode
emission
4
ICF-CD830/CD830L
SECTION  1
GENERAL
This section is extracted from
instruction manual.
Setting the Clock
and Date
1
Plug in the clock radio.
The display will flash “AM 12:00” or “0:00”.
2
Press CLOCK for a few seconds.
You will hear a beep and the year will start to
flash in the display.
3
Press  TIME SET + or  until the correct
year appears in the display.
4
Press CLOCK once.
5
Repeat steps 3 and 4 to set the month,
day, hour, and minute.
After setting the minute, press CLOCK to start
the counting of the seconds, and you will
hear two short beeps.
• To display the year and date, press SNOOZE/
DATE/SLEEP OFF once for the date, and within
2 seconds press it again for the year. The
display shows the date or year for a few
seconds and then changes back to the current
time.
• To set the current time rapidly, hold down
TIME SET + or .
• The clock system varies depending on the
model you own.
12-hour system: “AM 12:00” = midnight
24-hour system: “0:00” = midnight
• In step 5, when you press CLOCK after the
minute setting to activate the clock, the seconds
start counting from zero.
To change the display to the
daylight saving time (summer time)
indication
Press D.S.T./SUMMER T.
” is displayed and the time indication
changes to summer time.
To deactivate the summer time function, press
D.S.T./SUMMER T. again.
FM wire antenna
Antenne fil FM
AC power cord
Cordon d’alimentation
secteur
ICF-CD830
ICF-CD830L
VOLUME
5
ICF-CD830/CD830L
2-1. UPPER CASE
Note:
 Follow the disassembly procedure in the numerical order given.
SECTION  2
DISASSEMBLY
• The equipment can be removed using the following procedure.
2-2. KEY BOARD
4
 Lid, CD
2
 Panel (SP)
5
 Screw (+P3 
× 
14)  
3
 Five screws (+P3 
× 
14)
7
 Upper case
6
 Connector
    (CN371)
Pointer
1
 Eight claws
Precaution during installation
When installing the upper case to the main section,
move the pointer to the left-most end as shown.
3
 Key board
2
 Hook
1
  Five screws 
     (+P3 
×
 10)
4
 Wire
Transformer board
Key board
Upper case
Set
Main chassis
Optical pick-up block (KSM-213CDM)
Ver 1.1  2001.08
6
ICF-CD830/CD830L
2-3. TRANSFORMER  BOARD
2-4. MAIN CHASSIS
2
 Two screws 
    (+P3 
×
 10)
1
 Connector
    (CN901)
3
 Bracket (Trans)
4
 Transformer board
Transformer board
Power cord
2-5. OPTICAL PICK-UP BLOCK (KSM-213CDM)
1
 Two screws
     (+P3 
×
 10)
2
 Six screws 
    (+P3 
×
 10)
4
 Main chassis
3
 Connector
    (CN901)
3
 Optical pick-up block
    (KSM-213CDM)
1
 Two screws 
    (2.6 
×
 10)
2
 Two screws 
    (2.6 
×
 10)
7
ICF-CD830/CD830L
SECTION  3
TEST MODE
3-1. LCD Test Mode
• The LCD test mode is initiated by turning off the main power once then
back on or by resetting the machine while IC401 pin-60 terminal is
connected to GND, or while depressing the  D.S.T. ,  ALARM MODE  and
RADIO  keys simultaneously.
• The LCD test mode operations are listed in the following table.
• When the machine enters the LCD test mode, the version number of the
system control IC is displayed on the LCD.
• Pressing the  SNOOZE/DATE/SLEEP OFF  key turns on all segments of
LCD and LEDs.
• Pressing any key turns off the corresponding segment of the LCD.
Correspondence between the keys and segments of LCD are as follows.
KEY
D.S.T.
ALARM MODE
ALARM SET CD
ALARM SET BUZZER
ALARM SET RADIO
CLOCK
TIME SET –
TIME SET +
SEGMENT
s
ALARM  CD RADIO BUZZER
ALARM-CD LED
ALARM-BUZZER LED
ALARM-RADIO LED
AM, PM,:
1a, 1b, 1c, 1d, 1e, 1f, 1g,
2a, 2b, 2c, 2d, 2e, 2f, 2g
3a, 3b, 3c, 3d, 3e, 3f, 3g,
4a, 4b, 4c, 4d, 4e, 4f, 4g
KEY
CD PLAY MODE
CD
RADIO
OFF
SNOOZE/DATE/
SLEEP OFF
SEGMENT
REP, 1, ALL, SHUFFLE,
   ,    ,    ,
CD, H,    TRACK
RADIO, SLEEP
5a, 5b, 5c, 5d, 5e, 5f, 5g,
6a, 6b, 6c, 6d, 6e, 6f, 6g
• After all segments of LCD and LEDs turn off, pressing the  SNOOZE/DATE/SLEEP OFF  key ends the LCD test mode and resets the
machine.
3-2. CD Test Mode
3-2-1. CD TEST-1 (AUTO)
• The CD TEST-1 (AUTO) mode is initiated by turning off the main power once then back on or by resetting the machine while IC401 pin-
59 terminal (RADIO LED) is connected to GND, or while depressing the  D.S.T. ,  ALARM MODE  and  CD  keys simultaneously.
• When the machine enters CD TEST-1 (AUTO) mode, it repeats the focus search until the focus becomes OK.
• After the focus becomes OK and the focus is automatically adjusted, rough servo is locked in and the adjustment value is displayed.
• The sled can be moved to the innermost track by pressing the  .  button. The sled can be moved to the outermost track by pressing
the  >  button.
• When the  RADIO  button is pressed, the machine enters the CLVA (servo ON) and the mute is turned OFF if data is read successfully.
When the following button is pressed, the corresponding operations are performed.
a)   ALARM SET CD
Setting the 1 track jump
b)   ALARM SET RADIO
Setting the 10 track jump
c)   ALARM SET BUZZER
Setting the 100 track jump
Afterwards the desired track jump can be set by pressing the  >  or  .  button.
d)   ALARM MODE
TRACKING GAIN-UP
e)   RADIO
Rough servo
•  D.S.T.  restarts CD TEST-1 (AUTO) mode from the focus automatic adjustment
• When the  CD  button is pressed then, the track jumps to the second session and the machine exits the CD TEST-1 (AUTO) mode.
3-2-2. CD TEST-2 (MANUAL)
• The CD TEST-2 (MANUAL) mode is initiated by turning off the main power once then back on or by resetting the machine while IC401
pin-58 terminal (CD LED) is connected to GND.
• When the machine enters CD TEST-2 (MANUAL) mode, it repeats the focus search until the focus becomes OK.
• After the focus becomes OK, the machine enters the rough servo.
• The sled can be moved to the innermost track by pressing the  .  button. The sled can be moved to the outermost track by pressing the
>  button.
• When the  RADIO  button is pressed, the machine enters the CLVA (servo ON) and the mute is turned OFF if data is read successfully.
When the  RADIO  button is pressed again, the machine enters the rough servo.
• When the  CD  button is pressed then, the track jumps to the second session and the machine exits the CD TEST-2 (MANUAL) mode.
(LCD segment)
F-E BALANCE ADJUSTMENT
TRACKING GAIN ADJUSTMENT
FOCUS BIAS ADJUSTMENT
AM
CD
SHUFFLE
TRACK
a
1
2
3
4
5
6
f
g
b
c
e
d
8
ICF-CD830/CD830L
CD TEST-1
FOCUS
OK
Auto adjustment
Rough servo
CD button
±
 button
RADIO
button
Servo ON
Sled movement
TEST MODE END
The second music
played back.
CD button
±
 button
RADIO
button
jump has
been set?
Executes the 
setting of jump.
Sets the respective
setup values.
TRACKING
GAIN UP
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
ALARM SET
BUZZER
ALARM SET
RADIO
ALARM SET
CD
ALARM
MODE
D.S.T.
CD TEST-2
FOCUS
OK
Rough servo
±
 button
±
 button
RADIO
button
CD
button
CD
button
Servo ON
Sled movement
TEST MODE END
The second music
played back.
Y
Y
Y
N
Y
Y
Y
Y : YES
N : NO
9
ICF-CD830/CD830L
SECTION  4
ELECTRICAL  ADJUSTMENTS
FM VCO Adjustment
Procedure:
FM RF signal
generator
Carrier frequency: 98 MHz
Modulation: no modulation
Output level: 0.1 V (100 dB)
0.01 
µ
F
FM lead wire antenna terminal
Connection:
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT (CD830)
Adjust for a maximum reading on level meter
L4
515 kHz (516.5 kHz)
CT4
1,750 kHz (1,631.5 kHz)
AM TRACKING ADJUSTMENT (CD830)
Adjust for a maximum reading on level meter
L1
600 kHz
CT1
1,400 kHz
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L3
86.5 MHz (87.35 MHz)
CT3
109.5 MHz (108.25 MHz)
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
86.5 MHz (87.35 MHz)
CT2
109.5 MHz (108.25 MHz)
PRECAUTION
• Adjustment should be performed in the order given.
[FM]
Setting:
Function switch :  RADIO
BAND switch
:  FM
[AM (MW/LW) ]
Setting:
Function switch :  RADIO
BAND switch
:  AM (MW/LW)
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.
FM RF signal
generator
75 kHz frequency deviation 
by 1 kHz signal.
Output level: as low as possible
0.01 
µ
F
FM lead wire antenna terminal
TUNER  SECTION
0 dB=1 µV
Frequency counter
75,950 – 76,050 Hz
IC1 Pin 
4
+
frequency counter
33 k 
MAIN Board
IC1 Pin 
7
LW FREQUENCY COVERAGE ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
CT6
145 kHz
LW TRACKING ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
L1-2
160 kHz
CT5
240 kHz
1. Connect the frequency counter to 4 and 7 pins of IC1 as shown
the figure right.
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz reading on frequency counter.
Specification Value:
MW FREQUENCY COVERAGE ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
L4
515 kHz
CT4
1,750 kHz
MW TRACKING ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
L1-1
600 kHz
CT1
1,400 kHz
level meter
set
SPEAKER OUT
+
(        ) : AEP Model
Adjustment Location:
[MAIN BOARD] (Component Side)
L3
T1
AM IF
Adjustment
CT3
CT2
L2
FM Traking
Adjustment
L3
FM Frequency 
Coverage
Adjustment
L4
CT4  
AM Frequency 
Coverage Adjustment
MW Frequency 
Coverage Adjustment
CT6  
LW Frequency 
Coverage
Adjustment
L1, L1-1 
AM Tracking Adjustment
MW Tracking Adjustment
CT5
LW Traking Adjustment
L1-2
LW Traking Adjustment
CT1
AM Tracking Adjustment
MW Tracking Adjustment
10
ICF-CD830/CD830L
SECTION  5
DIAGRAMS
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
: Pattern from the side which enables seeing.
Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted.  pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
¢
: internal component.
2
: nonflammable resistor.
C
: panel designation.
H
: adjustment for repair.
A
: B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(         ) : AM (MW/LW)
<
> : CD
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: FM
f
: AM (MW/LW)
J
: CD
• Abbreviation
AUS
: Australian model
CND : Canadian model
IT
: Italian model
SP
: Singapore model
Note:
The components identi-
fied by mark 
!
 or dotted
line with mark 
!
 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 
!
 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
5-1.  CIRCUIT BOARDS LOCATION
• Waveforms
0.2 V/DIV, 500 ns/DIV
1.0 V/DIV, 20 
m
s/DIV
2.0 V/DIV, 40 ns/DIV
1
 
IC401 
ud
 (XT1)
2
 
IC501 
ed
 (RF0)
       (PLAY MODE) 
3
 
IC551 
ua
 (XTA0) 
3.4 Vp-p
31 ms
0.9 – 1.3 Vp-p
5.6 Vp-p
59 ns
MAIN board
LED board
TRANSFORMER board
MOTOR (6P) board
KEY board

Download Sony ICF-CD830 / ICF-CD830L Service Manual (Repair Manual)

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