sony_icf-sw7600gr_service_manual 电路图 维修原理图.pdf
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1、ICF-SW7600GR US Model Canadian Model AEP Model Chinese Model E Model Tourist Model SERVICE MANUAL FM STEREO/SW/MW/LW PLL SYNTHESIZED RECEIVER Sony Corporation Audio Entertainment Group General Engineering Dept. SPECIFICATIONS Ver 1.0 2001. 03 9-873-099-11 2001C1600-1 2001.3 Circuit systemFM:Super he
2、terodyne AM: Dual conversion super heterodyne Frequency rangeFM:76108 MHz SW:1 621 29 999 kHz MW: 5301 620 kHz LW: 150529 kHz OutputLINE OUT jack (stereo minijack) 1 Recording output level approx. 245 mV, output impedance less than 10 k i (headphones) jack (stereo minijack) 1 16 SpeakerApprox. 77 mm
3、 diameter, 8 1 Maximum output380 mW (at 10 % harmonic distortion) Power requirementsDC 6 V, four R6 (size AA) batteries External power source DC IN 6V (except Chinese) DimensionsApprox. 190 118.8 35.3 mm incl. projecting parts (w/h/d) MassApprox. 536 g Approx. 608 g (incl. four R6 (size AA) batterie
4、s) Supplied accessories Carrying case (1) Compact antenna AN-71 (1) Wave Handbook (1) Design and specifications are subject to change without notice. RadioFans.CN 2 TABLE OF CONTENTS ICF-SW7600GR 1. GENERAL3 2. DISASSEMBLY 2-1. Cabinet (Rear) 6 3. ELECTRICAL ADJUSTMENTS 6 4. DIAGRAMS 4-1. Block Diag
5、ram 9 4-2. Printed Wiring Board Main Board (Conductor Side) 10 4-3. Printed Wiring Board Main Board (Component Side) 11 4-4. Schematic Diagram Main Board (1/2) 12 4-5. Schematic Diagram Main Board (2/2) 13 4-6. Printed Wiring Board KEY Board 14 4-7. Schematic Diagram KEY Board 15 4-8. IC Pin Functio
6、n Description 16 5.EXPLODED VIEWS 5-1. Cabinet Section 17 5-2. Chassis Section 18 6. ELECTRICAL PARTS LIST 19 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 COM
7、PONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT
8、. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPMENTS PUBLIS PAR SONY. RadioFans.CN 3 ICF-SW7600GR SECTION 1 GENERALThis section is extracted from instruction manual. 1 AM EXT ANT (AM external antenna) jack (35) 2 ATT (attenuator) contro
9、l (21) 3 ATT (attenuator) ON/ OFF switch (21) 4 LINE OUT (recording output) jack (33) 5 2 (headphones) jack (17, 33) You can enjoy FM stereo broadcasting by connecting the optional stereo headphones to the unit . When using headphones, sound from the speaker will be muted. 6 DC IN 6V ! (external pow
10、er input) jack (10) 7 LIGHT button When the display is difficult to see, press this button to light up the display for approximately 10 seconds. Pressing the button again while the light is on will turn off the light. Performing button operations while the light is on will extend the lighting time.
11、8 Display (7) 9 Controls (6) 0 Speaker FrontRear 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 antenna Always pull out the base of the antenna before use. Furthermore, do not use unnecessary force when st
12、oring the antenna. At this time, be sure to push in the base as well. qj Stand qk Battery compartment Base Pull out RadioFans.CN 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 SET butto
13、ns (28, 30) 6 ENTER, LOCAL TIME SET button (11, 22, 28) 7 ERASE, DST (Daylight Saving Time) button (11, 13, 30) 8 AM BAND, WORLD TIME button (13, 18, 20) 9 POWER ON/OFF button 0 Number buttons (15, 16, 22, 23, 24) qa DISPLAY, EXE button (13, 15, 16) Press to switch to clock display while operating t
14、he radio. Press again to return to the previous display. If you do not press the button, the display will return to the previous condition in about 10 seconds. qs SCAN button (24) qd PAGE button (22, 24) qf MANUAL TUNE/SCAN START/STOP, STANDBY TIME SET/TIME SET buttons (11, 13, 18, 20, 28) Display 1
15、 TUNE indicator (16, 18) Appears when a station is tuned in. 2 Battery indicator (9) 3 HOLD indicator (32) Appears when HOLD is in effect. All buttons will be inoperative. 4 (Daylight Saving Time) indicator (12) Appears when the time display is adjusted to the Daylight Saving Time. 5 Preset number/t
16、ime difference display (11, 22, 23) 6 SYNCLOCK (synchronous detection lock) indicator (27) Appears when synchronous detection is in effect. 7 SLEEP indicator (31) Appears when the sleep timer is in effect. 8 STANDBY , STANDBY indicators (28, 29, 30) Light up when the standby timer is set. 9 PAGE num
17、ber display Appears constantly when the radio is on. 0 Time/frequency display RadioFans.CN 5 ICF-SW7600GR Setting the Current Time “0:00” flashes in the display when installing the batteries for the first time or when the unit has been reset. Set the clock to the current time. This unit can display
18、local time, which is the time for your time zone, as well 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 time difference* between the local time and the UTC (Universal Time Coordinated) is used (see page 14, “Time di
19、fference with UTC for each area”). To find out the correct time, set the correct time and time difference of the area you are in. * This unit uses time zones to pinpoint specific areas. 1If the radio is turned on, press POWER ON/OFF to turn it off. Note You cannot set the clock when the radio is tur
20、ned on. 2Hold down LOCAL TIME SET and press K or + k to choose the time difference between your local time and the UTC. TIME ZONE indicator will appear. Each time you press K or + k, the time difference (UTC + or ) and the “hour” of the clock will increase or decrease accordingly. Two short beeps wi
21、ll be heard when adjusting the time difference to 0. When you release LOCAL TIME SET, the TIME ZONE indicator will disappear and the time difference with UTC will be determined. 1 2 4 3 2, 4, 5 3To set the daylight saving time, press DST to display the indicator. If daylight saving time is not used
22、in your area, daylight saving time is not currently in effect, or is already displayed, proceed to Step 4. 4Hold 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 or increase by a minute. To change the digits rapidly, hold do
23、wn ?K or k?+. Two short beeps will be heard when adjusting the time to “0:00”. 5Release LOCAL TIME SET. “ : ” starts flashing and the clock starts running. To switch to clock display while the radio is turned on Press EXE. The display returns to the previous condition automatically after about 10 se
24、conds or when EXE is pressed again. The time display period is extended when the WORLD TIME 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 displ
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