Chinese Model E Model Tourist Model - Radioamatore.info...ICF-SW7600GR US Model Canadian Model AEP Model Chinese Model E Model Tourist Model SERVICE MANUAL FM STEREO/SW/MW/LW PLL SYNTHESIZED
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6. ELECTRICAL PARTS LIST ··································· 19
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITHMARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTSLIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESECOMPONENTS WITH SONY PARTS WHOSE PART NUMBERSAPPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTSPUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORTÀ LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LESDIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONTCRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NEREMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONYDONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OUDANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
3
ICF-SW7600GRSECTION 1GENERAL This section is extracted from
instruction manual.
1 AM EXT ANT (AMexternal antenna) jack (35)
2 ATT (attenuator) control(21)
3 ATT (attenuator) ON/OFF switch (21)
4 LINE OUT (recordingoutput) jack (33)
5 2 (headphones) jack (17,33)You can enjoy FM stereobroadcasting byconnecting the optionalstereo headphones to theunit . When usingheadphones, sound fromthe speaker will bemuted.
6 DC IN 6V !(external power input)jack (10)
7 LIGHT buttonWhen the display isdifficult to see, press thisbutton to light up thedisplay for approximately10 seconds. Pressing thebutton again while thelight is on will turn off thelight. Performing buttonoperations while the lightis on will extend thelighting time.
8 Display (7)
9 Controls (6)
0 Speaker
Front Rear
qa SSB FINE TUNE control (26)
qs LSB/USB selector (26, 27)
qd AM MODE selector (26, 27)
qf TONE selector (33)
qg VOLUME control
qh Telescopic antennaAlways pull out the base of the antenna before use.Furthermore, do not use unnecessary force when storing theantenna. At this time, be sure to push in the base as well.
qj Stand
qk Battery compartment
Base
Pull out
4
ICF-SW7600GR
Controls
1 SLEEP button (31)
2 HOLD switch (32)
3 DIRECT button (15, 16)
4 FM/AM button (16, 18, 20)
5 STANDBY MEMORY,TIMER STANDBY/STANDBY TIME SETbuttons (28, 30)
qa DISPLAY, EXE button(13, 15, 16)Press to switch to clockdisplay while operatingthe radio. Press again toreturn to the previousdisplay. If you do notpress the button, thedisplay will return to theprevious condition inabout 10 seconds.
7 SLEEP indicator (31)Appears when the sleeptimer is in effect.
8 STANDBY ,STANDBY indicators(28, 29, 30)Light up when thestandby timer is set.
9 PAGE number displayAppears constantly whenthe radio is on.
0 Time/frequency display
5
ICF-SW7600GR
Setting the Current Time“0:00” flashes in the display when installing the batteries for the first timeor when the unit has been reset. Set the clock to the current time.
This unit can display local time, which is the time for your time zone, aswell as world time, which is the time for any other area in the world.For the calculation of the time in other areas of the world, the timedifference* between the local time and the UTC (Universal TimeCoordinated) is used (see page 14, “Time difference with UTC for eacharea”). To find out the correct time, set the correct time and timedifference of the area you are in.* This unit uses time zones to pinpoint specific areas.
1 If the radio is turned on, press POWER ON/OFF toturn it off.NoteYou cannot set the clock when the radio is turned on.
2 Hold down LOCAL TIME SET and press K – or + kto choose the time difference between your local timeand the UTC.TIME ZONE indicator will appear. Each time you press K – or+ k, the time difference (UTC + or –) andthe “hour” of the clock will increase ordecrease accordingly.Two short beeps will be heard whenadjusting the time difference to ±0.When you release LOCAL TIME SET, theTIME ZONE indicator will disappear and the time difference withUTC will be determined.
1
2
432, 4, 5
3 To set the daylight saving time, press DST to displaythe indicator.If daylight saving time is not used in your area, daylight savingtime is not currently in effect, or is already displayed, proceedto Step 4.
4 Hold down LOCAL TIME SET and press –?K or k?+to set the local time.Each time you press –?K or k?+, the current time will decrease orincrease by a minute. To change the digits rapidly, hold down –?K
or k?+.Two short beeps will be heard when adjusting the time to “0:00”.
5 Release LOCAL TIME SET.“ : ” starts flashing and the clock startsrunning.
To switch to clock display while the radio is turned onPress EXE. The display returns to the previous conditionautomatically after about 10 seconds or when EXE is pressedagain. The time display period is extended when the WORLDTIME button is pressed during clock display, or when K – or+ k is pressed during world time display. During clock display,radio operations such as changing frequencies are not possible.The clock will not be displayed during auto scan (page 20) ormemory scan (page 24).
For areas adopting the daylight saving time (summer time)Press DST to display the indicator if you are now in thesummer time period. When the summer time period has ended,press DST to clear the indicator. The time display will beadjusted automatically.
Tips• The clock is displayed in the 24 hour system.• Press LOCAL TIME SET to stop the flashing of “0:00”.• To adjust the time to the second, release LOCAL TIME SET at the time
of the tone.
6
ICF-SW7600GRSECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET (REAR)
SECTION 3ELECTRICAL ADJUSTMENTS
Put the lead-wireantenna close tothe set.
AM RF signalgenerator
30% amplitude modulation by 400Hz signal output level: as low as possible
i headphones jack (J202)
level meter
set
16 Ω
• AM Section
• FM Section
(1) AM / FM VCO Check and AdjustmentSetting:
ATT switch : OFFTONE switch : MUSICAM MODE switch : NORM
Procedure:1. Connect digital voltmeter to the TP VT.2. Tune the set to AM 150kHz.3. Confirm that the reading on the digital voltmeter becomes in
more than 2.2V.4. Tune the set to AM 29999kHz.5. Confirm that the reading on the digital voltmeter becomes in
less than 13V.6. Tune the set to FM 108.00MHz.7. Confirm that the reading on the digital voltmeter becomes in
less than 13V.8. IF the value is more than 13V, adjust T202 so that the reading
on the digital voltmeter becomes in 12.5V.
Adjustment Location: MAIN board (See page 8)
(2) 1st IF AdjustmentSetting :
ATT switch : OFFTONE switch : MUSICAM MODE switch : NORM
Procedure:1. Set the frequencies of the AM RF signal generator and the
frequency display of the set to AM 150kHz.2. Adjust T104 and T105 so that the reading on level meter
becomes in maximum.
Adjustment Location: MAIN board (See page 8)
FM RF signalgenerator
FM RF IN
22.5kHz frequencydeviation by 400Hz signaloutput level: as low as possible
set
1 Three screws (+BTP 3 × 25)2 Two screws (+BTP 3 × 25)
4 Cabinet (rear)
3 Four claws
7
ICF-SW7600GR
NG
Center
NGNG OK
(3) 2nd Local AdjustmentSetting:
ATT switch : OFFTONE switch : MUSICAM MODE switch : NORM
Procedure:1. Connect frequency counter to the TP OSC2 through the high
input impedance amplifier.2. Tune the set to AM 150kHz.3. Adjust CT202 so that the reading on the frequency counter
becomes in 53.39000MHz±30Hz.(55.38997 to 55.39003MHz)
Adjustment Location: MAIN board (See page 8)
(4) FM Tracking AdjustmentSetting:
ATT switch : OFFTONE switch : MUSIC
Procedure:1. Set the frequency of the FM RF signal generator and the
frequency display of the set to FM 108.00MHz.2. Adjust CT101 and CT102 so that the reading on level meter
becomes in maximum.3. Set the frequency of the FM RF and the frequency display of
the set to FM 76.00MHz.4. Adjust T101 and T102 so that the reading on level meter
becomes in maximum.5. Repeat the above steps 1 to 4 several times.
Adjustment Location: MAIN board (See page 8)
(5) 76kHz (MPX) AdjustmentSetting:
ATT switch : OFFTONE switch : MUSIC
Procedure:1. Insert Headphones plug into headphones jack (J202) (for VCO
operation).2. Connect a capacitor (10µF) between IC202 pin1 and GND.3. Connect frequency counter to the TP 76K (VCO) through the
high input impedance amplifier.4. Tune the set to FM 108.00MHz.5. Adjust RV203 so that the reading on the frequency counter
becomes in 76kHz±300Hz.6. Remove the headphones plug.
Procedure:1. Connect an oscilloscope to the TP SD.2. Tune the set to FM 93.00MHz.3. Adjust RV202 so that the waveform on the oscilloscope satisfy
as shown the figure.
Adjustment Location: MAIN board (See page 8)
(7) SSB 0 Beat AdjustmentSetting :
ATT switch : OFFTONE switch : MUSIC
(AM RF signal generator)Frequency : AM 150kHzModuration : NoneOutput level : 44dB
Procedure:1. Connect an oscilloscope to the TP DET.2. Tune the set to AM 150kHz.3. Set the AM MODE switch to SYNC.4. Set the SYNC switch to USB.5. Adjust CT201 so that the waveform on the oscilloscope is
minimized.6. Set the LSB/USB switch to LSB.7. Adjust CT201 so that the waveform on the oscilloscope is
minimized.8. Repeat the above steps 4 to 7 several times.9. Set the AM MODE switch to SSB.10. Confirm that the beat sound is changed by turning the
SSB FINE TUNE control.
Adjustment Location: MAIN board (See page 8)
8
ICF-SW7600GR
Adjustment Location :[MAIN BOARD] — Component Side —
[MAIN BOARD] — Conductor Side —
T104 T105
1st IFAdjustment
T202FM
VCOAdjustment
IC201
RV202JUST TUNEAdjustment
CT101 CT102
FM TRACKINGAdjustment(108MHz)
T101 T102
FM TRACKINGAdjustment
(76MHz)
CT2022nd LOCALAdjustment
CT201SSB
0 BEATAdjustment
RV20376kHz(MPX)
Adjustment
RV204VOLUME
RV203
C231
C272
C262
C1
C135
C221
C259
C209
CF20
5
CT20
1
CF204
CF203
C267
C253
C261
C260
RV202
X201
CT20
2
C152
CT102
T102
T202
CT101
T107
CF201 15
1
1 8
916
16
30
1
1718
2
CN201
IC203
IC201 T101
T103
2C 2E
2C
2C
1E1B
1B
2E
E
2B
2B
1C
1C
2C
1BE2B
1C
AK
KA
CB
E
CB
E
C
B
E
1
1
4 5
8
5
S
D
G
S
S
D
D
G
G
B
B
B
E
EE
C
C
CB
E
C
KK
A
A
KA
AA
K
K
C
E
B
A
EC
VTAM/FM VCOAdjustment
OSC22nd
LOCALAdjustment
SDJUSTTUNE
Adjustment
76K (VCO)MPX
AdjustmentDETSSB
0 BEATAdjustment
99
ICF-SW7600GRSECTION 4DIAGRAMS
4-1. BLOCK DIAGRAM
20
19
15
16 13
14 5
11 9
22 23
1 9
10
8
1
16
7
10
9
4
13
14
4
24 7 6 8 27
26
1
29
2
30
+
2
1
53
14
56
55
5
68
501
511
233
2
72
2
2
25
24
52
19
20
54
21
16
17
15
Q112,113ATT
Q105ATT
Q205BAND
SWITCH
Q209FM
HIGH CUT
Q210AM
HIGH CUT
Q202SWITCH
Q203MUTING
Q211MUTING
Q214LINE AMP
Q213LINE AMP
Q215MUTING
Q224B+ SWITCH
Q222,225B+ SWITCH
Q202SWITCH
Q223SWITCH
Q201SWITCH
Q201SWITCH
Q208SWITCH
Q210SWITCH
Q101MUTING
CONTROL
Q101MUTING
CONTROL
Q120ATT
Q106ATT
Q114,115AGC
Q302CURRENT REG
Q303,306PLL LPF
Q301LED DRIVE
Q108,121AGC
Q109,110AM MIX
Q1111ST
IF AMP
Q116LW/MWRF AMP
Q107SW
RF AMP
Q104FM
RF AMP
Q1191ST OSC
AMP
Q117AM VCO
AMP
Q304FM VCO
AMP
Q206FM VCOBUFFER
Q207AM/FMSWITCH
Q212STEREO
CONTROL
Q220AM/FM
B+ SWITCH
Q219AM/FM
B+ SWITCH
Q216DC/DC
CONVERTER
Q221AM/FM
B+ SWITCH
Q217AM/FM
B+ SWITCH
Q218AM/FM
B+ SWITCH
Q305AM/FM
B+ SWITCH
Q1181ST OSC
VT
VT
VT
BPF
VT
REG
35ı
49
9ı3
13ı
10
31ı
34
KEYMATRIX
BATT
IC204
+3V REG
REG
REG
VT
ANT101
J101
AM EXT ANT
(EXCEPT CH)
ROD B
BAR B
TO Q112-116
REGS101
RV101
ATT
ANT102(FERRITE-ROD)
AGC
AGC
(TELESCOPIC) T101FM ANT
CT101
FM TRACKING FM TRACKING
T102FM RF
CT102
MUTING
VCOL
VCOH
AM REG
AM REG
T104AM MIX2
XF10155.845MHz
T105AM IFT1
1ST IF
AM REG
T202
FM VCO
X201AM OSC2
55.390MHz
CT202
2ND LOCAL
CT201SSB
0 BEAT
RV201
SSBFINE TUNE
S201
AM MODE
MUTING
MUT
ING
FMRF
AMIN
BAND
FMOS
C
AMOS
C-I
AMOS
C-O
CERA
LOCK
SYNC
/SSB
VCO
ENV/
PSN
DET
METER
SD-OUT
SD-CTRL/AGC
U/L
FEOUT FMIFOUTFMIFIN
AMIFIN
FMLIMIN
DISCRI
CF20210.7MHz
CF201455kHz
CF20310.7MHz
CF205DISCRI
10.7MHz
METER
SD
AGC
RV202JUSTTUNE
S202
SYNC
MUTING
FM REG
AM REG
RV203
76k(MPX)
IN
VCO
IN2 L
IN1 R
NF2
NF1
VOL
L
R
STOP
IC202PLL FM MPX
IC203PRE/POWER AMP
OUT2
OUT1
VCC
S203
TONE
RV204
VOLUMEw
J201
LINE OUT
SP201(SPEAKER)
J202
(HEADPHONES)
J203
BEEP
MUT
ING
IC302DIGITAL TUNING SYSTEM CONTROL
X30175kHz
S301 - 323S325 - 328
S329
HOLD .
BATT
IC303
IC304
IC305
3.5V DET
3.1V DET
3.0V REG
IC301EEPROM
VDD
VDD
SDA
SCK
XIN
XOUT
KS0-6
KR0-3
HOLD
SI/SO
SCK
VDET
CE
LCD0-14
COM0-3
LIGHT
MUTING
BEEP
SD
METER
MUTING
BEEP
SD
METER
EO
VCOL
VCOH
VCOL
VCOH
AM/FM
BAR/ROD
POWER
+13V+13V
AM B
ROD B
BAR B
FM REG
AM REG
LCD1LIQUID CRYSTAL DISPLAY
D301(BACK LIGHT)
IC201FM/AM FRONT-END
IF,DET
DRY BATTERYSIZE"AA"
(IEC DESIGNATION R6) 4PCS,6V
EXCEPT CH
(EXCEPTEA)
CF2043.64MHz
OFF
ON
ATT
• AbbreviationCH: Chinese modelEA: Saudi Arabia model
LSB
USB
NEWS
MUSIC
– SSB SYNC NORM –
HOLD
FREE
: FM
: MW/LW
• Signal Path
: SW
DC IN 6V
1010
ICF-SW7600GR
4-2. PRINTED WIRING BOARD – MAIN BOARD (CONDUCTOR SIDE) –
Note on Printed Wiring Boards:• X : parts extracted from the component side.• a : Through hole.• : Pattern from the side which enables seeing.(The other layers' patterns are not indicated.)
Caution:Pattern face side: Parts on the pattern face side seen from(Conductor Side) the pattern face are indicated.Parts face side: Parts on the parts face side seen from(Component Side) the parts face are indicated.
• AbbreviationCH : Chinese model.EA : Saudi Arabia model.
1111
ICF-SW7600GR
4-3. PRINTED WIRING BOARD – MAIN BOARD (COMPONENT SIDE) –
15 16
A
B
C
D
E
F
G
H
I
17 18 19 20 21 22 23 24 25 26 27 28
MAIN BOARD (COMPONENT SIDE)
1-679-368-11
(11)
BTO
KEY BOARD
US
Note on Printed Wiring Boards:• X : parts extracted from the component side.• a : Through hole.• : Pattern from the side which enables seeing.(The other layers' patterns are not indicated.)
Caution:Pattern face side: Parts on the pattern face side seen from(Conductor Side) the pattern face are indicated.Parts face side: Parts on the parts face side seen from(Component Side) the parts face are indicated.
1212
ICF-SW7600GR
4-4. SCHEMATIC DIAGRAM – MAIN BOARD (1/2) –
Note on Schematic Diagram:• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolyticsand tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specified.• C : panel designation.• A : B+ Line.• H : adjustment for repair.• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).Voltage variations may be noted due to normal produc-tion tolerances.
• Voltage variations may be noted due to normal produc-tion tolerances.
• Signal path.F : FML : MW/LWh : SW
• AbbreviationCH : Chinese model
1313
ICF-SW7600GR
4-5. SCHEMATIC DIAGRAM – MAIN BOARD (2/2) – • Refer to page 16 for IC Block Diagrams.
Note on Schematic Diagram:• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolyticsand tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specified.• ¢ : internal component.• C : panel designation.• A : B+ Line.• H : adjustment for repair.• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-tion tolerances.
• Voltage variations may be noted due to normal produc-tion tolerances.
• Signal path.F : FML : MW/LWh : SW
• AbbreviationCH : Chinese modelEA : Saudi Arabia model
IC B/D
IC B/D
IC B/D
IC B/D
1414
ICF-SW7600GR
4-6. PRINTED WIRING BOARD – KEY BOARD –
Note on Printed Wiring Boards:• X : parts extracted from the component side.• a : Through hole.• : Pattern from the side which enables seeing.(The other layers' patterns are not indicated.)
Caution:Pattern face side: Parts on the pattern face side seen from(Conductor Side) the pattern face are indicated.Parts face side: Parts on the parts face side seen from(Component Side) the parts face are indicated.
IC301 8-759-679-18 IC S-24C02BFJ-TBIC302 6-800-111-01 IC uPD17073GB-564-1A7IC303 8-759-549-49 IC S-80835ANNP-EDZ-T2IC304 8-759-676-76 IC R3111Q311A-TRIC305 8-759-492-58 IC RN5RL30AA-TL
The components identified bymark 0 or dotted line with mark0 are critical for safety.Replace only with part numberspecified.
Les composants identifiés parune marque 0 sont critiquespour la sécurité.Ne les remplacer que par unepièce portant le numéro spécifié.
MAIN
ICF-SW7600GRUS Model
Canadian ModelAEP Model
Chinese ModelE Model
Tourist Model
SERVICE MANUAL
SUPPLEMENT-1Subject : Addition of Self-diagnosis and Service Note.
(ENG-01014)
Self-diagnosis displayWhen a dry battery is put in first and “E-00” is displayed on liquid crystal,the error has occurred by communication of IC301(EEPROM) andIC302(microcomputer). In this case, failure of IC301, disconnection ofa communication course, etc. can be considered.
Ver 1.1 2001. 08
2
ICF-SW7600GR
SERVICE NOTE
The cautions when carrying out exchange of IC302 (6-800-111-01), orexchange of KEY board (A-4440-289-A).
When carrying out exchange of IC302, or exchange of KEY board, a setup ofdestination is needed.
Procedure of a setup :1. A power supply is supplied and a clock is displayed. (Once it turns ON a power
supply, it is made to turn off, if it is in power saving.)2. Two test lands of KEY board are made to short-circuit. (Fig.1)3. A liquid-crystal display lights up altogether except PAGE No.4. By the difference to destination, 1 to 3 is inputted by 10 keys.
(The difference to destination is as follows.)5. The beep sound “pi” carries out and it returns to a usual clock display.
Destination 3
Saudi Arabia
150-285kHz
530-1620kHz
2250-26100kHz
9kHz
87.5-108.0MHz
Destination 2
US, Canadian
150-529kHz
530-1620kHz
1621-29999kHz
10kHz
76.0-108.0MHz
Destination 1
Others
150-529kHz
530-1620kHz
1621-29999kHz
9kHz
76.0-108.0MHz
LW
MW
SW
MW step
AM
FM
BAND
3 4 5 6 7
IC303
IC304
IC305
ATO
MAIN BOARD
1-679-367-
11
(11)
AK
3
2
4
1718
12
CN301
E B
EB
C
E B
C
C
G
G
S
S
D
D
AK
S327AM BAND
S325ERASE
S328ENTER
S323 S319
abSTANDBY MEMORY
1
3
2
4
1
4
3
5
1
Short
Fig. 1
[KEY BOARD] (CONDUCTOR SIDE)
25
ICF-SW7600GR
MEMO
ICF-SW7600GR
REVISION HISTORY
Clicking the version allows you to jump to the revised page.Also, clicking the version at the upper right on the revised page allows you to jump to the next revisedpage.
Ver. Date Description of Revision
1.1 2001. 08 Addition of Self-diagnosis and Service Note (ENG-01014)