Sony CFS-828SMK2 Service Manual

Radio cassette-corder

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SERVICE MANUAL
Ver 1.0 2003.12
Frequency range
FM: 87.5 - 107 MHz
MW: 530 - 1,605 kHz
SW1: 2.3 - 7 MHz
SW2: 7 - 22 MHz
IF
FM: 10.7 MHz
MW/SW: 455 kHz
Antennas
FM/SW: Telescopic
MW: Built-in ferrite bar
Recording system
4-track, 2-channel stereo
Frequency response
80 - 12,500 Hz
Speakers
Full range: 10 cm (4 inches) dia., 6 Ω, cone type/
Tweeter: 2 cm (
inches) dia.
13/16
Output
Headphones jack (stereo minijack), for 16 - 68 Ω
impedance headphones
Maximum Power output
9W
Sony Corporation
9-961-447-01
2003L04-1
Personal Audio Company
© 2003.12
Published by Sony Engineering Corporation
CFS-828SMK2
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
Battery life
FM Recording: Sony R20P: Approx. 9 hours/
Sony LR20 alkaline: Approx. 23 hours
Playback: Sony R20P: Approx. 3 hours/
Sony LR20 alkaline: Approx. 8 hours
Power requirements
110 - 120 V/220 - 240 V AC selectable, 50/60 Hz
9 V DC, six R20 (size D) batteries
DC IN 12V jack
Power consumption
AC 18 W
Dimensions
Approx. 679 × 263.5 × 239.5 mm (w/h/d)
(26
and controls, not incl. handle
Mass
Approx. 7.3 kg (16 lb 1 oz) incl. batteries
Supplied accessory
AC power cord (1)
Design and specifications are subject to change without
notice.
× 10
× 9
inches) incl. projecting parts
6/8
3/8
4/9
RADIO CASSETTE-CORDER
E Model
CFS-828S
MF-W828-117
1

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Summary of Contents for Sony CFS-828SMK2

  • Page 1 MF-W828-117 SPECIFICATIONS Frequency range Battery life FM: 87.5 - 107 MHz FM Recording: Sony R20P: Approx. 9 hours/ MW: 530 - 1,605 kHz Sony LR20 alkaline: Approx. 23 hours SW1: 2.3 - 7 MHz Playback: Sony R20P: Approx. 3 hours/ SW2: 7 - 22 MHz Sony LR20 alkaline: Approx.
  • Page 2: Table Of Contents

    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 COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 3: General

    CFS-828SMK2 SECTION 1 GENERAL This section is extracted from instruction manual. Location of controls FUNCTION FINE TUNING OPR/BATT VOLUME TUNING BAND Deck A Deck B DC IN 12V PHONES (rear) SOUND SELECT ISS (rear) MAXI BASS VOLTAGE SELECTOR (rear)
  • Page 4: Disassembly

    CFS-828SMK2 SECTION 2 DISASSEMBLY • The equipment can be removed using the following procedure. 2-1. CABINET (FRONT) ASSY, CABINET (REAR) ASSY (Page 4) 2-2. POWER AND 2-4. H/P, LED2, MAXI BASS, 2-3. MECHANISM DECK DC IN BOARDS VOL AND MAIN BOARDS...
  • Page 5: Power And Dc In Boards

    CFS-828SMK2 2-2. POWER AND DC IN BOARDS cabinet (rear) assy 4 DC IN board 1 CNP901 3 two screws (+BVTP 2.6 x 8) 6 shield plate (T) 2 CNP313 7 screw (+BVTP 3 x 10) 5 two screws (+BVTP 3 x 10)
  • Page 6: H/P, Led2, Maxi Bass, Vol And Main Boards

    CFS-828SMK2 2-4. H/P, LED2, MAXI BASS, VOL AND MAIN BOARDS 3 retainer board qf screw 2 screw (+BVTP 3 x 10) (+BVTP 3 x 10) 4 H/P board qs CNP418 qa CNP303 qj VOL board 5 screw (+BVTP 3 x 10)
  • Page 7: Jog And Led1 Boards

    CFS-828SMK2 2-6. JOG AND LED1 BOARDS 3 JOG board 2 two screws (+BVTP 3 x 10) 4 two screws (+BVTP 3 x 10) 5 LED1 board 6 window (LED) 1 jog dial 2-7. REC SW BOARD, BELT AND MOTOR ASSY (W) (M301)
  • Page 8: Dial Pointer Setting

    CFS-828SMK2 SECTION 3 DIAL POINTER SETTING 1 pointer 2 knob (TUN) assy knob (TUN) assy midway gear pointer 4 screw knob (TUN) assy (+BVTP 3 x 10) 3 midway gear 5 screw (+BVTP 3 x 10) 1 gear (VC) 6 screw...
  • Page 9: Mechanical Adjustments

    CFS-828SMK2 SECTION 4 SECTION 5 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS PRECAUTION TAPE SECTION 0 dB = 0.775 V 1. Clean the following parts with a denatured alcohol-moistened swab : Standard Output Level record/playback head pinch roller Output terminal SP OUT PHONES OUT...
  • Page 10: Tuner Section

    CFS-828SMK2 TUNER SECTION 0 dB = 1 µV FM IF ADJUSTMENT Common Setting: Adjust for a maximum reading on level meter. SOUND SELECT control: FLAT 10.7 MHz VOLUME control: MAX MAXI BASS switch: OFF FM FREQUENCY COVERAGE ADJUSTMENT • FM Section Adjust for a maximum reading on level meter.
  • Page 11 CFS-828SMK2 FM VCO Adjustment Setting: BAND switch: FM FM RF signal telescopic generator antenna terminal 0.01µF 98MHz frequency deviation by 1kHz signal Output level: 0.1V (100dB) digital frequency counter TUNER board 1 µ F IC1 pin 4 33k Ω IC1 pin 7 Procedure: 1.
  • Page 12: Diagrams

    CFS-828SMK2 SECTION 6 DIAGRAMS 6-1. CIRCUIT BOARDS LOCATION BATT (–) board TUNER board VOL board BATT (+) board DC JACK HOLD board (not supplied) DC IN board MAIN board POWER board LED1 board LED2 board F/T board H/P board RETAINER board...
  • Page 13: Block Diagram

    CFS-828SMK2 6-2. BLOCK DIAGRAM FLAT GROOVE LIVE CINEMA IC301 REC/PB PRE AMP LED DRIVER Q322,323 KEY1 MIC301 MIC IN KEY2 S306 DECK A KEY3 SOUND A-DECK-L SELECT R-CH KEY4 (L-CH) KEY5 VREF HP301 PLAYBACK HEAD IC302 (R-CH) R-CH S303 D326...
  • Page 14: Printed Wiring Boards - Tuner Section

    CFS-828SMK2 : Uses unleaded solder. 6-3. PRINTED WIRING BOARDS — TUNER SECTION — • Refer to page 12 for Circuit Boards Location. THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.)
  • Page 15: Schematic Diagram - Tuner Section

    CFS-828SMK2 6-4. SCHEMATIC DIAGRAM — TUNER SECTION — • Refer to page 14 for Common Note on Schematic Diagrams and page 21 for IC Block Diagrams. S1-2 S1-5 S1-3 S1-1 S1-7 S1-6 ANT1 S1-4 CNP1 IC B/D S1-8 (Page 17)
  • Page 16: Printed Wiring Boards - Main Section

    CFS-828SMK2 : Uses unleaded solder. 6-5. PRINTED WIRING BOARDS — MAIN SECTION — • Refer to page 12 for Circuit Boards Location and page 14 for Common Note on Printed Wiring Boards. • Semiconductor Location Ref. No. Location D153 C-11...
  • Page 17: Schematic Diagram - Main Section (1/2)

    CFS-828SMK2 6-6. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 14 for Common Note on Schematic Diagrams and page 21 for IC Block Diagrams. HE301 T301 C101 C313 R109 C312 R305 L301 R102 R209 HRP301 R103 S303...
  • Page 18: Schematic Diagram - Main Section (2/2)

    CFS-828SMK2 6-7. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 14 for Common Note on Schematic Diagrams and page 22 for IC Block Diagrams. IC B/D IC304 W302 W306 C248 R250 D317 R368 R388 Q322 D316 J301...
  • Page 19: Printed Wiring Boards - Power Section

    CFS-828SMK2 : Uses unleaded solder. 6-6. PRINTED WIRING BOARDS — POWER SECTION — • Refer to page 12 for Circuit Boards Location and page 14 for Common Note on Printed Wiring Boards. (Page 16) (Page 16) • Semiconductor Location Ref. No.
  • Page 20: Schematic Diagram - Power Section

    CFS-828SMK2 6-9. SCHEMATIC DIAGRAM — POWER SECTION — • Refer to page 14 for Common Note on Schematic Diagrams. S901 T901 F902 F901 C902 C904 D902 D904 F903 J901 C901 C903 D901 D903 CNP411 CNP313 (Page 18) CNP902 F904 R308...
  • Page 21: Ic Block Diagrams

    CFS-828SMK2 • IC Block Diagrams IC1 CXA1538S MULTIPLEX FM FE REGULATOR REGULATOR AM FE PD 1 MUTING 1/2 COUNTER FM IF/ PD 2 DISCRI AUTO BLEND AM IF/DET DECODE AMP MO/ST DETUNE RIPPLE FILTER TUNING IND MUTING CONTROL IC301 BA3426AS τ...
  • Page 22 CFS-828SMK2 IC302 AN7338K 21 20 FLAT FLAT VREF MUTE τ TREBLE BASS REGULATOR TREBLE BASS FLAT ANALOG SWITCH FLAT IC303, 304 BA5417 T.S.D ST.BY FILTER...
  • Page 23: Exploded Views

    CFS-828SMK2 SECTION 7 EXPLODED VIEWS NOTE: • The mechanical parts with no reference • Color Indication of Appearance Parts The components identified by mark 0 or dotted line with mark number in the exploded views are not supplied. Example : 0 are critical for safety.
  • Page 24: Cabinet (Front) Section-1

    CFS-828SMK2 7-2. CABINET (FRONT) SECTION-1 not supplied MIC301 supplied supplied (JOG board) supplied (F/T board) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-236-130-02 KNOB (TUNE) * 67 A-4541-741-A MAIN BOARD, COMPLETE 3-236-151-01 RING (KNOB) 3-236-140-02 CHASSIS (TUNE)
  • Page 25: Cabinet (Front) Section-2

    CFS-828SMK2 7-3. CABINET (FRONT) SECTION-2 MF-W828-117 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-236-125-21 CABINET (FRONT) 3-243-766-01 BUTTON (PAUSE) (A) 3-236-127-01 LID (B), CASSETTE 3-243-765-01 BUTTON (S/E) (A) 3-236-188-02 SPRING (CAS) 3-243-764-01 BUTTON (FF) (A)
  • Page 26: Mechanism Deck Section-1

    CFS-828SMK2 7-4. MECHANISM DECK SECTION-1 (MF-W828-117) DECK A DECK B not supplied not supplied (REC SW board) M301 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-016-031-11 BELT M301 A-3174-238-A MOTOR ASSY (W) (CAPSTAN/REEL) 3-014-797-01 CUSHION, MOTOR...
  • Page 27: Mechanism Deck Section-2

    CFS-828SMK2 7-5. MECHANISM DECK SECTION-2 (MF-W828-117) HP301 (DECK A), HRP301 (DECK B) HE301 (DECK B) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-010-01 SPRING (S/P), TORSION * 214 3-008-591-01 SLIDER (PAUSE) 3-933-025-01 SPRING (P), TORSION...
  • Page 28: Mechanism Deck Section-3

    CFS-828SMK2 7-6. MECHANISM DECK SECTION-3 (MF-W828-117) J102 (DECK A), J103 (DECK B) J104 (DECK A), J105 (DECK B) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-029-01 LEVER, ERASING PREVENTION 3-939-383-02 SPRING, COMPRESSION 3-933-182-01 SPRING, CASSETTE...
  • Page 29: Speaker Section

    Part No. Description Remark Ref. No. Part No. Description Remark X-3381-754-1 SPEAKER ASSY (SVX) 3-038-018-01 EMBLEM, SONY (including SP303 or SP304) SP301 1-825-012-11 SPEAKER (10cm) (WOOFER) (L-CH) * 302 1-860-811-11 RETAINER BOARD SP302 1-825-012-11 SPEAKER (10cm) (WOOFER) (R-CH) 3-039-471-02 FOOT...
  • Page 30: Electrical Parts List

    CFS-828SMK2 SECTION 8 BATT (+) BATT (–) ELECTRICAL PARTS LIST DC IN DC JACK HOLD NOTE: The components identified by • Due to standardization, replacements in • Items marked “*” are not stocked since mark 0 or dotted line with mark the parts list may be different from the they are seldom required for routine service.
  • Page 31 CFS-828SMK2 LED1 LED2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JOG BOARD C142 1-162-286-21 CERAMIC 220PF C143 1-126-947-11 ELECT 47uF ********** C144 1-104-658-11 ELECT 100uF < CONNECTOR > C145 1-104-658-11 ELECT 100uF C146 1-136-165-00 MYLAR 0.1uF...
  • Page 32 CFS-828SMK2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C318 1-162-282-31 CERAMIC 100PF D253 8-719-991-33 DIODE 1SS133T-77 C319 1-162-282-31 CERAMIC 100PF D301 8-719-109-97 DIODE RD6.8ES-B2 C320 1-162-306-11 CERAMIC 0.01uF D302 8-719-991-33 DIODE 1SS133T-77 C321 1-162-306-11 CERAMIC 0.01uF...
  • Page 33 CFS-828SMK2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > R244 1-249-409-11 CARBON 1/4W R245 1-249-437-11 CARBON 1/4W R101 1-249-417-11 CARBON 1/4W R246 1-249-441-11 CARBON 100K 1/4W R102 1-249-429-11 CARBON 1/4W R247 1-249-385-11 CARBON...
  • Page 34 CFS-828SMK2 MAIN MAXI BASS POWER REC SW TUNER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R368 1-249-413-11 CARBON 1/4W 1-860-808-11 POWER BOARD R370 1-249-389-11 CARBON 1/4W ************* R371 1-249-413-11 CARBON 1/4W R372 1-249-413-11 CARBON 1/4W...
  • Page 35 CFS-828SMK2 TUNER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-162-191-31 CERAMIC 2.2PF < COIL > 1-162-199-31 CERAMIC 10PF 1-128-805-21 CERAMIC 47PF 1-428-860-11 COIL, AIR-CORE 1-136-479-11 FILM 0.001uF 100V 1-416-509-11 COIL, AIR-CORE 1-136-356-11 FILM 470PF 100V...
  • Page 36 CFS-828SMK2 Ref. No. Part No. Description Remark MISCELLANEOUS *************** * 302 1-860-811-11 RETAINER BOARD ANT1 1-501-820-11 ANTENNA, TELESCOPIC (FM/SW) 0 F901 1-533-468-12 FUSE, GLASS TUBE (DIA.5) (2A/250V) 0 F902 1-533-468-12 FUSE, GLASS TUBE (DIA.5) (2A/250V) 0 F903 1-533-459-12 FUSE, GLASS TUBE (DIA.5) (0.25A/250V) 0 F904 1-533-471-12 FUSE, GLASS TUBE (DIA.5) (4A/250V)
  • Page 37 CFS-828SMK2 MEMO...
  • Page 38 CFS-828SMK2 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2003. 12...

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