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CHASSIS  ASSY

Note:

 Follow the disassembly procedure in the numerical order given.

SECTION  2

DISASSEMBLY

2

claw

2

three claws

1

screw (P3 

×

 14)

1

four screws (P3 

×

 14)

3

rear cabinet

4

connector
(CN301)

7

chassis assy

5

Break the soldering of
speaker lead.

6

button (DST)

6

knob (brightness)

POWER  CORD  SETTING

Set the power cord as illustrated below,
then install the cabinet.

rear cabinet

power cord

boss

rear cabinet

power cord

Put the secondary flat cable 
between bosses to fix.

Summary of Contents for Dream Machine ICF-C795RC

Page 1: ...MICROFILM SERVICE MANUAL FM AM RADIO CONTROLLED CLOCK RADIO AEP Model SPECIFICATIONS ICF C795RC Ver 1 0 1999 08 ...

Page 2: ...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 CF2 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 HOW TO CHANGED THE CERAMIC FILTERS This model is u...

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

Page 4: ... 4 ...

Page 5: ...ew P3 14 1 four screws P3 14 3 rear cabinet 4 connector CN301 7 chassis assy 5 Break the soldering of speaker lead 6 button DST 6 knob brightness POWER CORD SETTING Set the power cord as illustrated below then install the cabinet rear cabinet power cord boss rear cabinet power cord Put the secondary flat cable between bosses to fix ...

Page 6: ...ER ANTENNA ANTENNA CORD SETTING 2 claw 2 claw 3 box upper antenna 1 three screws Set the antenna cord as illustrated below then install the antenna box box lower antenna coil lead antenna cord antenna ferrite rod ...

Page 7: ... 400 Hz signal Output level as low as possible level meter MAIN board TP SP GND MAIN board TP SP set MAIN board TP FM IN 8 Ω 0 01 µF MAIN board TP FM GND digital voltmeter 100 kΩ TP VT TP FM GND MAIN board AM IF ADJUSTMENT Adjust for a maximum reading on level meter T1 450 kHz AM VCO VOLTAGE ADJUSTMENT Adjustment Part Frequency Display Reading on Digital Voltmeter L5 531 kHz 2 65 V 0 1 V Confirmat...

Page 8: ...ductor Side ANTENNA SECTION Antenna Adjustment Setting Procedure 1 Set a SSG 2 Connect an oscilloscope to TP451 and TP452 on the AN TENNA board 3 Adjust L451 on the ANTENNA board for a maximum wave form level on the oscilloscope Adjustment Location TP452 TP451 L451 Antenna Adjustment ANTENNA BOARD Conductor Side SSG Frequency 77 5 kHz Modulation no modulation antenna unit loop antenna ANTENNA boar...

Page 9: ... B BUZZER S50 BRIGHTNESS LCD BACK LIGHT D70 73 LCD BACK LIGHT D74 D75 2 1 L5 AM VCO VOLTAGE L1 TC1 AM TRACKING L3 TC3 FM TRACKING T1 AM IF B P F BPF1 LOW PASS FILTER Q50 51 LED DRIVE Q53 54 MUTING Q4 SIGNAL PATH FM AM 05 D2 D3 AC IN BACKUP B SYSTEM CONTROLLER IC100 B B BZ CTRL 35 ALM A 6 ALM B 7 BUZZER 36 DATA DATA IN DA PD1 27 5 15 CLK CK 26 4 CE CE 34 3 MUTE PDET 33 28 RESET 18 AM IN 11 FM IN XO...

Page 10: ...xcept for electrolytics and tantalums All resistors are in Ω and 1 4 W or less unless otherwise specified f internal component C panel designation U B Line H adjustment for repair Voltages and waveforms are dc with respect to ground under no signal detuned conditions no mark FM AM Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerance...

Page 11: ......

Page 12: ...sec after power on then it changes to H 19 XT1 I Sub system clock input terminal 32 768 kHz 20 XT2 O Sub system clock output terminal 32 768 kHz 21 IC Connected to power supply 3 8V 22 X1 I Main system clock input terminal 4 19 MHz 23 X2 O Main system clock output terminal 4 19 MHz 24 VDD Power supply terminal 3 8V 25 DATA IN I Time code data input from the U4226B IC451 26 CLK O PLL serial data tr...

Page 13: ...NOTE XX and X mean standardized parts so they may have some difference from the original one Color Indication of Appearance Parts Example KNOB BALANCE WHITE RED Parts Color Cabinet s Color Ref No Part No Description Remark Ref No Part No Description Remark 1 7 685 649 79 SCREW P 3X14 TYPE2 NON SLIT 2 3 368 852 01 FOOT 3 X 3377 455 1 CABINET TRANSPARENT PLATE ASSY 4 3 032 463 01 BUTTON DST 5 1 671 ...

Page 14: ...2 459 01 CHASSIS 58 3 919 268 01 KNOB VOL 59 3 033 972 01 HOLDER FERRITE ROD ANTENNA 60 3 318 203 31 SCREW B1 7X8 TAPPING 61 3 040 333 01 FOOT 62 3 038 573 01 BOX LOWER ANTENNA 63 A 3683 116 A ANTENNA BOARD COMPLETE 64 3 038 572 01 BOX UPPER ANTENNA 65 1 791 673 11 CORD CONNECTION L1 1 754 039 11 ANTENNA FERRITE ROD AM L451 1 754 082 11 ANTENNA FERRITE ROD LCD100 1 803 761 11 DISPLAY PANEL LIQUID ...

Page 15: ...5 00 CERAMIC CHIP 2PF 50V C28 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C29 1 163 227 11 CERAMIC CHIP 10PF 0 5PF 50V C30 1 126 960 11 ELECT 1uF 20 50V C31 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C32 1 163 131 00 CERAMIC CHIP 390PF 5 50V C33 1 163 989 11 CERAMIC CHIP 0 033uF 10 25V C34 1 163 237 11 CERAMIC CHIP 27PF 5 50V C41 1 126 934 11 ELECT 220uF 20 10V C42 1 128 551 11 ELECT 22uF 20 25V C43 1 10...

Page 16: ...ACK LIGHT D75 8 719 075 78 LED TLYE262A K51 SOY P B BUZZER LCD BACK LIGHT D100 8 719 074 44 DIODE 1SS120RX D101 8 719 988 61 DIODE 1SS355TE 17 D102 8 719 988 61 DIODE 1SS355TE 17 D351 8 719 031 85 DIODE 1N4002L D352 8 719 031 85 DIODE 1N4002L D353 8 719 031 85 DIODE 1N4002L D354 8 719 031 85 DIODE 1N4002L D355 8 719 074 44 DIODE 1SS120RX IC IC1 8 752 050 16 IC CXA1019M IC50 8 759 188 85 IC BU2614F...

Page 17: ...1 10W R137 1 216 065 00 RES CHIP 4 7K 5 1 10W R138 1 216 097 00 RES CHIP 100K 5 1 10W R139 1 216 109 00 METAL CHIP 330K 5 1 10W R140 1 216 214 00 RES CHIP 4 7K 5 1 8W R141 1 216 214 00 RES CHIP 4 7K 5 1 8W R142 1 216 065 00 RES CHIP 4 7K 5 1 10W R143 1 216 246 00 RES CHIP 100K 5 1 8W R144 1 216 001 00 METAL CHIP 10 5 1 10W R145 1 216 081 00 METAL CHIP 22K 5 1 10W R147 1 216 057 00 METAL CHIP 2 2K ...

Page 18: ...SPEAKER 6 6cm 0T301 1 433 601 11 TRANSFORMER POWER ACCESSORIES PACKING MATERIALS 3 867 545 11 MANUAL INSTRUCTION ENGLISH FRENCH GERMAN DUTCH Sony Corporation Personal Audio Company 9 927 163 11 99H0534 1 Printed in Japan C 1999 8 Published by General Engineering Dept ICF C795RC The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number spec...

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