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CFS-KW300S
SERVICE MANUAL
Ver 1.0 1999. 12
SUPPLEMENT-3
File this supplement with the service manual.
Subject:
1. Circuit Change
(SPM-99047)
Because of change made to circuit, schematic diagram, printed
wiring board, exploded view (5-5. SPEAKER Section) and electrical
parts list are released.

TABLE OF CONTENTS

1.
CIRCUIT CHANGE
• Printed Wiring Board .................................................... 6
• Schematic Diagram ...................................................... 9
2.
CORRECTION AND CHANGE
• Exploded Views ............................................................ 16
• Electrical Parts List ....................................................... 20

• DISCRIMINATION

– MAIN BOARD (Conductor Side) –
E Model
– ECHO BOARD (Component Side) –
Former : 1-648-388-11
New
: 1-665-605-11
– 2 –
– POWER BOARD (Component Side) –
Former : 1-648-393-11
New
: 1-648-393-22
– CONTROL BOARD (Component Side) –
Former : 1-648-392-11
New
: 1-657-121-12
– VOL LED BOARD (Component Side) –
Former : 1-648-389-11
New
: 1-657-122-12
– 3 –
– TERMINAL BOARD (Component Side) –
Former : 1-648-391-11
New
: 1-657-123-12
Former : 1-648-390-11
New
: 1-657-120-12

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Summary of Contents for Sony CFS-KW300S

  • Page 1 CFS-KW300S • DISCRIMINATION – MAIN BOARD (Conductor Side) – – POWER BOARD (Component Side) – – TERMINAL BOARD (Component Side) – E Model SERVICE MANUAL Former : 1-648-391-11 : 1-657-123-12 Ver 1.0 1999. 12 SUPPLEMENT-3 Former : 1-648-390-11 File this supplement with the service manual.
  • Page 2 • PRINTED WIRING BOARD CFS-KW300S 1. Circuit Change • Semiconductor Location Ref. No. Location Ref. No. Location IC504 J-13 IC505 J-12 IC601 D101 B-18 IC602 D102 A-18 D201 B-18 D202 A-18 D303 D304 D305 Q101 G-11 D306 Q103 F-11 D307...
  • Page 3 • SCHEMATIC DIAGRAM • See page 15 for Waveforms. CFS-KW300S • IC Block Diagram – ECHO Board – IC602 BU9255FS-E2 15 14 STATIC COUNTER – Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.
  • Page 4 • Waveforms 2. Correction And Change – CONTROL Board – – MAIN Board– 5-3. MECHANISM DECK SECTION-2 (MF-KW300S) • EXPLODED VIEWS 6 IC501 7 1 Q302 (Base) (Record Mode) Page INCORRECT CORRECT 500mV/DIV, 5µs/DIV 2V/DIV, 1µs/DIV NOTE: Page INCORRECT CORRECT Ref.
  • Page 5 5-5. SPEAKER SECTION SP601, 651 SP602, 652 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-3367-350-1 CABINET (FRONT) ASSY (L), SP 3-389-443-01 BOX (REAR) (L), SP X-3367-349-1 CABINET (FRONT) ASSY (R), SP 3-389-444-01 BOX (REAR) (R), SP 1-751-483-11 CORD, SPEAKER CONNECTION 3-904-982-01 STOPPER, CORD 1-124-499-11 ELECT, NONPOLAR 1uF...
  • Page 6 CONTROL • ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 7 CONTROL ECHO MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R529 1-249-421-11 CARBON 2.2K 1/4W < TRANSISTOR > R530 1-249-421-11 CARBON 2.2K 1/4W R531 1-247-807-31 CARBON 1/4W Q601 8-729-194-57 TRANSISTOR 2SC945-P Q602 8-729-194-57 TRANSISTOR 2SC945-P <...
  • Page 8 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CAPACITOR > C119 1-124-903-11 ELECT C120 1-162-306-11 CERAMIC 0.01uF 1-162-207-31 CERAMIC 22PF (E, UAE) C121 1-124-902-00 ELECT 0.47uF 1-162-209-31 CERAMIC 27PF C122 1-162-600-11 CERAMIC 0.0047uF 30% (EA) C123 1-126-956-11 ELECT...
  • Page 9 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C322 1-124-902-00 ELECT 0.47uF D304 8-719-991-33 DIODE 1SS133T-77 C323 1-162-600-11 CERAMIC 0.0047uF 30% C324 1-124-903-11 ELECT D305 8-719-991-33 DIODE 1SS133T-77 C325 1-126-961-11 ELECT 2.2uF D306 8-719-991-33 DIODE 1SS133T-77 C326 1-126-963-11 ELECT 4.7uF...
  • Page 10 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q201 8-729-194-57 TRANSISTOR 2SC945-P R119 1-249-429-11 CARBON 1/4W Q203 8-729-900-80 TRANSISTOR DTC114ES R123 1-249-442-11 CARBON 1/4W Q204 8-729-194-57 TRANSISTOR 2SC945-P R125 1-247-807-31 CARBON 1/4W Q302 8-729-194-57 TRANSISTOR 2SC945-P R133 1-247-897-11 CARBON 560K...
  • Page 11 MAIN POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R335 1-249-415-11 CARBON 1/4W < CAPACITOR > 0 R341 1-249-447-11 CARBON 1/4W F 0 R343 1-249-480-11 CARBON 1/2W F C131 1-124-903-11 ELECT R344 1-249-406-11 CARBON 1/4W C132 1-162-282-31 CERAMIC 100PF...
  • Page 12 POWER TERMINAL VOL LED Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q106 8-729-029-06 TRANSISTOR 2SC4361 MISCELLANEOUS Q205 8-729-194-57 TRANSISTOR 2SC945-P ************** Q206 8-729-029-06 TRANSISTOR 2SC4361 Q322 8-729-029-06 TRANSISTOR 2SC4361 1-751-483-11 CORD, SPEAKER CONNECTION 1-124-499-11 ELECT, NONPOLAR 1uF Q327 8-729-029-06 TRANSISTOR 2SC4361 ANT1...
  • Page 13 • HARDWARE LIST AND ACCESSORIES & PACKING MATERIALS Page Before Change After Change Ref. No. Part No. Description Ref. No. Part No. Description Remark ************** ************** HARDWARE LIST HARDWARE LIST ************** ************** 7-621-770-67 SCREW + BVTT 2.6X6 (S) 7-685-102-14 SCREW + P 2X4 TYPE 2 SLIT Changed 7-621-255-25 SCREW + PTT 2X4 (S)
  • Page 14 CFS-KW300S Sony Corporation 1999L0525-1 9-957-923-83 Personal Audio Division Company Printed in Japan C 1999. 12 – 28 – Published by General Engineering Dept.

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