Sony Dream Machine ICF-C290 User manual

ICF-C290
FM/AM CLOCK RADIO
ICF-C290L
FM/LW CLOCK RADIO
MICROFILM
AEP Model
ICF-C290/C290L
UK Model
E Model
Australian Model
ICF-C290
SPECIFICATIONS
SERVICE MANUAL
ICF-C290/C290L
Photo: ICF-C290
Ver 1.1 1998. 10
With SUPPLEMENT 1
(9-925-745-81)

– 2 –
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.
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 PUB-
LISHED BY SONY.
CF
2
CF3
mark
Mark Center frequency
red 10.70 MHz
blue 10.67 MHz
orange 10.73 MHz
black 10.64 MHz
white 10.76 MHz
HOWTO CHANGED THE CERAMIC FILTERS
This model is used two ceramic filters of CF2 and CF3.
You must used same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must changed two pieces together
since it's supply two pieces in one package as a spare parts.
SERVICING NOTES

– 3 –
SECTION 1
GENERAL This section is extracted from
instruction manual.

– 4 –
Set the power cord as illustrated below, then install the lower cabinet.
SETTING THE POWER CORD
SECTION 2
SETTING
KNOB SETTING
7 claws
5 MAIN board
3 Turn shaft of CV1 to the
arrow A direction fully.
4 Turn RV1 to the arrow B
direction fully.
6 claw
2 Turn the knob (VOL) to the
arrow B direction fully.
1 Turn the knob (tuning) to the
arrow A direction fully.
A
B
lower cabine
t
power cord

( ): Italian model
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.
CT2 109.5 MHz (108.25 MHz)
AM FREQUENCY COVERAGE ADJUSTMENT (C290)
Adjust for a maximum reading on level meter.
L4 520 kHz (516.5 kHZ)
CT4 1,650 kHz (1,631.5 kHz)
AM TRACKING ADJUSTMENT (C290)
Adjust for a maximum reading on level meter.
L1 600 kHz
CT1 1,400 kHz
LW FREQUENCY COVERAGE ADJUSTMENT (C290L)
Adjust for a maximum reading on level meter.
L4 145 kHz
CT6 265 kHz
LW TRACKING ADJUSTMENT (C290L)
Adjust for a maximum reading on level meter.
L1 160 kHz
CT5 240 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1 455 kHz
– 5 – – 6 –
SECTION 3
ELECTRICAL ADJUSTMENTS
FM SECTION
Setting:
BAND switch: FM
AM SECTION
Setting:
BAND switch: AM/LW
• Repeat the procedures in each adjustment several times, and
the frequency coverage and tracking adjustments should be fi-
nally done by the trimmer capacitors.
Adjustment Location: MAIN board (Conductor Side)
FM RF signal
generator
400 Hz, 30% FM modulation
frequency deviation
± 22.5 kHz
Output level: as low as possible
0.01 µ Fset
lead antenna
input terminal
AM RF signal
generator
400 Hz, 30%
AM modulation
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
level mete
r
set
speaker terminal
8
Ω
+
–
IC1
CT6
LW FREQUENCY
COVERAGE AM FREQUENCY COVERAGE
FM TRACKING
AM TRACKING
LW TRACKING
AM IF
FM FREQUENCY
COVERAGE
L4
L3
L3 CV1
CT2
CT5
L1
T1
CT1
CT4
CT3

– 10 –
– 9 –
4-2. SCHEMATIC DIAGRAM (EXCEPT E MODEL) • See page 15 for IC Block Diagrams.
ICF-C290/C290L

– 14 –
– 13 –
4-4. SCHEMATIC DIAGRAM (E MODEL) • See page 15 for IC Block Diagrams.
ICF-C290/C290L

– 15 – – 16 –
SECTION 5
EXPLODED VIEW
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delayshouldbeanticipatedwhenorderingthese
items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories and packing materials are given in
the last of the electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
mayhavesomedifference from the original one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑↑
Parts Color Cabinet's Color
• Abbreviation
AUS: Australian
EA : Saudi Arabia
IT : Italian
SP : Singapore
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 3-018-229-01 KNOB (FUNCTION) (BLACK)
1 3-018-229-11 KNOB (FUNCTION) (WHITE)
2 3-919-270-01 MARKER
3 3-018-230-01 SCALE, DIAL (C290: AEP, IT, EA, SP)
3 3-018-230-11 SCALE, DIAL (C290: AUS, UK, E)
3 3-018-230-21 SCALE, DIAL (C290L)
4 3-018-226-01 CABINET (UPPER) (BLACK)
4 3-018-226-11 CABINET (UPPER) (WHITE)
5 3-018-228-01 BUTTON (BLACK)
5 3-018-228-11 BUTTON (WHITE)
*6 A-3662-242-A MAIN BOARD, COMPLETE (C290L)
*6 A-3662-244-A MAIN BOARD, COMPLETE (C290: AUS)
*6 A-3662-246-A MAIN BOARD, COMPLETE (C290: AEP, SP)
*6 A-3662-247-A MAIN BOARD, COMPLETE (C290: IT)
*6 A-3662-248-A MAIN BOARD, COMPLETE (C290: UK)
*6 A-3662-801-A MAIN BOARD, COMPLETE (C290: EA)
*6 A-3679-648-A MAIN BOARD, COMPLETE (C290: E)
7 1-535-804-21 SNAP, BATTERY
8 3-919-271-01 HOLDER (ANTENNA) (C290: E)
8 3-922-610-01 HOLDER (ANTENNA) (C290: EXCEPT E/C290L)
9 3-919-267-01 KNOB (TUNE) (C290: E)
9 3-922-609-01 KNOB (TUNE) (C290: EXCEPT E/C290L)
10 3-919-269-01 POINTER
11 3-919-268-01 KNOB (VOL)
*12 1-654-818-11 POEWR SUPPLY BOARD (C290: E)
13 3-018-227-01 CABINET (LOWER) (BLACK) (C290)
13 3-018-227-11 CABINET (LOWER) (WHITE) (C290)
13 3-018-227-21 CABINET (LOWER) (BLACK) (C290L)
13 3-018-227-31 CABINET (LOWER) (WHITE) (C290L)
14 3-369-135-21 LID, BATTERY CASE
!15 1-555-795-00 CORD, POWER (C290: AEP, IT, EA, SP/C290L)
!15 1-558-566-21 CORD, POWER (C290: E)
!15 1-765-458-11 CORD, POWER (C290: AUS)
!15 1-769-578-11 CORD, POWER (C290: UK)
17 7-621-770-87 SCREW +P 2.6X5 (C290: E)
18 7-685-649-79 SCREW +P 3X14 TYPE2 NON-SLIT
*19 3-905-767-01 PLATE, SHIELD (C290L)
D7 1-809-515-11 DIODE LTC-6512PDK2 (C290: AUS, UK, E)
D7 1-809-515-21 DIODE LTC-6512PDK4
(C290: AEP, IT, EA, SP/C290L)
L1 1-501-765-11 ANTENNA, FERRITE-ROD (AM)
(C290: EXCEPT E)
L1 1-501-742-11 ANTENNA, FERRITE-ROD (MW) (C290: E)
L1 1-501-777-11 ANTENNA, FERRITE-ROD (LW) (C290L)
SP1 1-504-748-11 SPEAKER (6.6CM)
!T2 1-427-927-11 TRANSFORMER, POWER (C290: E)
!T2 1-427-928-11 TRANSFORMER, POWER
(C290: EXCEPT E/C290L)
Thecomponents identified by mark
!or dotted line with mark !are
critical for safety.
Replace only with part number
specified.
not supplied
not supplied
SP1
15
1
15 15
2
4
3
5
18
18
14
18
13
11
10
19
8
17
6
(including ● A
)
7
L1
D7
T2
12 (E model)
● A (except E model)
9
• IC Block Diagrams
IC1 CXA1019S
12 3 45 6 7 8 9 10 1514131211
FM
DISCRIMINATOR
AF POWER AMP AM FE FM IF
TUNING
METER
AM IF DET AGC
FM FE
23 22 21 202425 19 18 17 1629 28 27 2630
GND GND AF OUT VCC RIPPLE FILTER AF IN DET OUT AFC AGC AFC AGC IF GND METER N.C FM IF IN AM IF IN FM/AM BAND SELECT
FM/AM
IF OUT
FE GND
N.C
AM RF IN
FM RF
REG OUT
FM OSC
FM RF IN
AFC
AM OSC
VOL
NF
FM DISCRI
GND GND
IC2 LM8560N
OSC
CTR
GATE
GATE
D
OUTPUT
CONTROL
COMPARATOR
STAND
BY DET
BLANK
&
FLASH
OUTPUT
DECODER/
DRIVER
INPUT
CONTROL
PWR
UP
1/2
SEC
CTR RESET
CONTROL
1/25 OR 1/30
DISPLAY
CONTROL TIME
HR CTR
CONTROL
ALARM
HR CTR
D D D D D
SLEEP
CTR
ALARM
MIN CTR
TIME
MIN CTR
SEC RSTYHLD
TIME
SEC
ALARM
SLEEP
28 27 26 25 24 23 22 21 20 18
14
1 – 13
16 15 17
PWR UP
TONE
PWR
UP
50/60Hz 50/60Hz 50/60Hz 50/60Hz50/60Hz50/60Hz
2Hz
50/60Hz
T.DISP &
S.SAMPLE
T.RST
AL.RST
SEC DISP
T.DISP
AL.DISP
SL.DISP
TIME &
S.SAMPLE TIME & F.SAMPLE
ALARM &
F.SAMPLE
ALARM &
S.SAMPLE
2Hz
F.SAMPLE
S.SAMPLE
50/60Hz
12/24 SELECT CR INPUT 50/60 SELECT 50/60 INPUT SNOOZE DISPLA
Y
SLEEP DISPLA
Y
HOUR SET MIN SET
VSS
ALARM OFF SLEEP OFF ALARM OUTPUT VDD
19
ALARM DISPLA
Y
NC
SEGMENT
OUTPUT
PF.
DET
1kHz

– 17 –
SECTION 6
ELECTRICAL PARTS LIST
Ref. No. Part No. Description Remark
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Abbreviation
AUS: Australian EA: Saudi Arabia
IT : Italian SP : Singapore
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: µ, for example:
uA. . : µA. . uPA. . : µPA. .
uPB. . : µPB. . uPC. . : µPC. .
uPD. . : µPD. .
• CAPACITORS
uF: µF
• COILS
uH: µH
Ref. No. Part No. Description Remark
The components identified by
mark !or dotted line with mark
!are critical for safety.
Replace only with part number
specified.
*A-3662-242-A MAIN BOARD, COMPLETE (C290L)
*A-3662-244-A MAIN BOARD, COMPLETE (C290: AUS)
*A-3662-246-A MAIN BOARD, COMPLETE (C290: AEP, SP)
*A-3662-247-A MAIN BOARD, COMPLETE (C290: IT)
*A-3662-248-A MAIN BOARD, COMPLETE (C290: UK)
*A-3662-801-A MAIN BOARD, COMPLETE (C290: EA)
*A-3679-648-A MAIN BOARD, COMPLETE (C290: E)
*********************
1-535-804-21 SNAP, BATTERY
*3-905-767-01 PLATE, SHIELD (C290L)
3-919-271-01 HOLDER (ANTENNA) (C290: E)
3-922-610-01 HOLDER (ANTENNA) (C290: EXCEPT E/C290L)
7-621-770-87 SCREW +P 2.6X5 (C290: E)
< CAPACITOR >
C1 1-102-936-00 CERAMIC 3.0PF +-0.25PF 50V
(C290: EXCEPT E)
C1 1-102-951-00 CERAMIC 15PF 5% 50V
(C290L)
C2 1-102-951-00 CERAMIC 15PF 5% 50V
(C290: AUS, AEP, UK, SP/C290L)
C2 1-102-952-00 CERAMIC 16PF 5% 50V
(C290: E)
C2 1-102-958-00 CERAMIC 20PF 5% 50V
(C290: IT, EA)
C3 1-102-960-00 CERAMIC 24PF 5% 50V
(C290: AUS, AEP, UK, E, SP/C290L)
C3 1-102-961-00 CERAMIC 27PF 5% 50V
(C290: IT, EA)
C4 1-101-081-00 CERAMIC 130PF 5% 50V
(C290L)
C4 1-102-937-00 CERAMIC 4.0PF +-0.25PF 50V
(C290: EXCEPT E)
C5 1-101-081-00 CERAMIC 130PF 5% 50V
(C290: E)
C6 1-101-880-00 CERAMIC 47PF 5% 50V
C7 1-104-664-11 ELECT 47uF 20% 10V
C8 1-101-004-00 CERAMIC 0.01uF 50V
C9 1-126-963-11 ELECT 4.7uF 20% 50V
C10 1-101-004-00 CERAMIC 0.01uF 50V
C11 1-101-004-00 CERAMIC 0.01uF 50V
C12 1-101-004-00 CERAMIC 0.01uF 50V
C13 1-126-963-11 ELECT 4.7uF 20% 50V
C14 1-124-907-11 ELECT 10uF 20% 50V
C15 1-101-005-00 CERAMIC 22000PF 50V
(C290)
C15 1-162-847-11 CERAMIC 0.047uF 10% 16V
(C290L)
C16 1-124-903-11 ELECT 1uF 20% 50V
C17 1-104-664-11 ELECT 47uF 20% 10V
C18 1-162-851-11 CERAMIC 0.1uF 10% 16V
C19 1-162-851-11 CERAMIC 0.1uF 10% 16V
C20 1-126-968-11 ELECT 100uF 20% 6.3V
C21 1-161-049-00 CERAMIC 0.0068uF 10% 50V
(C290: E)
C21 1-162-837-11 CERAMIC 0.0068uF 10% 16V
(C290: EXCEPT E/C290L)
C22 1-101-004-00 CERAMIC 0.01uF 50V
C23 1-101-004-00 CERAMIC 0.01uF 50V
C24 1-101-004-00 CERAMIC 0.01uF 50V
C25 1-101-004-00 CERAMIC 0.01uF 50V
C26 1-126-934-11 ELECT 220uF 20% 16V
C27 1-124-472-11 ELECT 470uF 20% 10V
(C290: EXCEPT E/C290L)
C27 1-126-941-11 ELECT 470uF 20% 6.3V
(C290: E)
C28 1-124-471-00 ELECT 1000uF 20% 6.3V
(C290: E)
C28 1-126-926-11 ELECT 1000uF 20% 10V
(C290: EXCEPT E/C290L)
C29 1-101-004-00 CERAMIC 0.01uF 50V
C30 1-101-004-00 CERAMIC 0.01uF 50V
C31 1-126-961-11 ELECT 2.2uF 20% 50V
(C290L)
< FILTER >
CF1 1-577-072-11 FILTER, CERAMIC (C290)
CF1 1-578-677-11 FILTER, CRYSTAL (C290L)
CF2 1-760-144-61 FILTER, CERAMIC
CF3 1-760-144-61 FILTER, CERAMIC
< CONNECTOR >
*CN1 1-769-137-11 CORD, CONNECTION (16 CORE)
< TRIMMER >
CT5 1-141-227-00 CAP, TRIMMER 20PF (C290L)
MAIN
When indicating parts by reference
number, please include the board.

– 18 –
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
CT6 1-141-260-00 CAP, TRIMMER 50PF (C290L)
< VARIABLE CAPACITOR >
CT1-4 1-141-526-11 CAP, VAR (C290: E)
CT1-4 1-141-529-11 CAP, VAR (C290: EXCEPT E/C290L)
CV1 1-141-526-11 CAP, VAR (TUNING) (C290: E)
CV1 1-141-529-11 CAP, VAR (TUNING) (C290: EXCEPT E/C290L)
< DIODE >
D1 8-719-921-19 DIODE 1SS119-25TG
D2 8-719-921-19 DIODE 1SS119-25TG
D3 8-719-921-19 DIODE 1SS119-25TG
D4 8-719-921-19 DIODE 1SS119-25TG
D5 8-719-921-19 DIODE 1SS119-25TG
D6 8-719-052-88 DIODE 1N4002
D7 1-809-515-11 DIODE LTC-6512PDK2 (C290: AUS, UK, E)
D7 1-809-515-21 DIODE LTC-6512PDK4
(C290: AEP, IT, EA, SP/C290L)
D8 8-719-921-19 DIODE 1SS119-25TG (C290L)
D9 8-719-921-19 DIODE 1SS119-25TG (C290: AUS)
< IC >
IC1 8-752-055-05 IC CXA1019S
IC2 8-759-821-46 IC LM8560N
< COIL >
L1 1-501-742-11 ANTENNA, FERRITE-ROD (MW) (C290: E)
L1 1-501-765-11 ANTENNA, FERRITE-ROD (C290: EXCEPT E)
L1 1-501-777-11 ANTENNA, FERRITE-ROD (LW) (C290L)
L3 1-428-163-11 COIL, AIR-CORE
(C290: AUS, AEP, UK, E, SP/C290L)
L3 1-460-018-11 COIL (WITH CORE) (C290: IT, EA)
L4 1-406-028-00 COIL, OSC (MW) (C290: EXCEPT E/C290L)
L4 1-411-175-11 COIL (MW OSC) (C290: E)
L5 1-411-136-11 COIL, AIR-CORE
L6 1-411-136-11 COIL, AIR-CORE
< TRANSISTOR >
Q1 8-729-119-76 TRANSISTOR 2SA1175-HFE
Q2 8-729-119-76 TRANSISTOR 2SA1175-HFE (C290: E)
Q3 8-729-029-86 TRANSISTOR DTC124ESA (C290L)
Q4 8-729-422-57 TRANSISTOR UN4111 (C290L)
< RESISTOR >
R1 1-249-397-11 CARBON 22 5% 1/4W
R2 1-249-397-11 CARBON 22 5% 1/4W
R3 1-249-435-11 CARBON 33K 5% 1/4W
(C290: EXCEPT E/C290L)
R3 1-249-441-11 CARBON 100K 5% 1/4W
(C290: E)
R4 1-247-891-00 CARBON 330K 5% 1/4W
(C290: E)
R4 1-249-441-11 CARBON 100K 5% 1/4W
(C290: EXCEPT E/C290L)
R5 1-249-433-11 CARBON 22K 5% 1/4W
R6 1-247-887-00 CARBON 220K 5% 1/4W
R7 1-249-441-11 CARBON 100K 5% 1/4W
R8 1-249-413-11 CARBON 470 5% 1/4W
(C290L)
R9 1-249-421-11 CARBON 2.2K 5% 1/4W
(C290L)
< VARIABLE RESISTOR >
RV1 1-228-790-00 RES, VAR, CARBON 50K (VOL)
< SWITCH >
S1 1-762-231-11 SWITCH, SLIDE (BAND)
S2 1-762-232-11 SWITCH, SLIDE (OFF/RADIO ON/ALARM)
S3 1-762-233-11 SWITCH, KEYBOARD (ALARM)
S4 1-762-233-11 SWITCH, KEYBOARD (M•TIME SET)
S5 1-762-233-11 SWITCH, KEYBOARD (TIME SET•H)
S6 1-762-233-11 SWITCH, KEYBOARD (CLOCK)
S7 1-762-233-11 SWITCH, KEYBOARD (SLEEP)
S8 1-762-233-11 SWITCH, KEYBOARD (SNOOZE/SLEEP OFF)
< TRANSFORMER >
T1 1-404-790-11 TRANSFORMER, IF
************************************************************
MISCELLANEOUS
***************
!15 1-555-795-00 CORD, POWER (C290: AEP, IT, EA, SP/C290L)
!15 1-558-566-21 CORD, POWER (C290: E)
!15 1-765-458-11 CORD, POWER (C290: AUS)
!15 1-769-578-11 CORD, POWER (C290: UK)
SP1 1-504-748-11 SPEAKER (6.6CM)
!T2 1-427-927-11 TRANSFORMER, POWER (C290: E)
!T2 1-427-928-11 TRANSFORMER, POWER
(C290: EXCEPT E/C290L)
************************************************************
ACCESSORIES & PACKING MATERIALS
********************************
*3-324-066-01 SHEET, PROTECTION (C290: E)
3-861-255-11 MANUAL, INSTRUCTION (ENGLISH, FRENCH,
GERMAN, DUTCH, ITALIAN) (C290: IT, UK/C290L)
3-861-255-21 MANUAL, INSTRUCTION (ENGLISH, GERMAN,
SPANISH, DUTCH, SWEDISH, PORTUGUESE)
(C290: AEP)
3-861-255-31 MANUAL, INSTRUCTION (ENGLISH, FRENCH,
SPANISH, ARABIC) (C290: AUS, EA, E, SP)
MAIN
The components identified by mark !or dotted
line with mark !are critical for safety.
Replace only with part number specified.
Sony Corporation
Personal & Mobile Communication Company9-925-745-11
ICF-C290/C290L
97I0577-1
Printed in Japan © 1997. 9
Published by Quality Assurance Dept.

SERVICE MANUAL
Ref. No. Part No. Description Remark
ICF-C290/C290L
SUPPLEMENT-1
File this supplement with the service manual.
AEP Model
ICF-C290/C290L
UK Model
E Model
Australian Model
ICF-C290
Subject:Addition of CET (East European,Russia) and Argentina Model
(ICF-C290)
Addition of CET (East European,Russia) and Argentina model
CET (East European, Russia) and Argentina model have been added.
They are the same as ICF-C290 (AEP model ) which is not described in this supplement-1.
Refer to ICF-C290/C290L original service manual (9-925-745-∏) for other information.
DIFFERENCETABLE
Page ICF-C290 (AEP model) ICF-290 (CET,AR model)
!15 1-790-124-11CORD, POWER (C290: AR)
3-861-255-61MANUAL, INSTRUCTION
(ENGLISH, POLISH, CZECH,
HUNGARIAN)
(C290: CET)
Ref. No. Part No. Description Remark
16,
18
Sony Corporation
Personal A&V Products Company
98J05085-1D
Printed in Japan © 1998.10
Published by Quality Engineering Dept.
(Shibaura)9-925-745-81
!15 1-555-795-00CORD, POWER
(C290: AEP, IT, EA, SP/C290L)
3-861-255-21MANUAL, INSTRUCTION
(ENGLISH,GERMAN, SPANISH, DUTCH,
SWEDISH, PORTUGUESE)
(C290: AEP)
18
•Abbreviation
EA: Saudi Arabia
IT: Italian
SP: Singapore
AR: Argentina
The components identified by mark !or dotted
line with mark !are critical for safety.
Replace only with part number specified.
1998.10