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SERVICE MANUAL
Ver. 1.4 2005.09
With SUPPLEMENT-1
AUDIO POWER SPECIFICATIONS (US Model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
Main speaker with 3.2-ohm loads, both channels driven from
1,000 - 10,000 Hz; rated 3 W per channel-minimum RMS power,
with no more than 10 % total harmonic distortion in AC operation.
Subwoofer with 4-ohm loads, driven at 50 - 150 Hz; rated 6 W
minimum RMS power, with no more than 10 % total harmonic
distortion in AC operation.
GAME Xpand with 12-ohm loads, driven at 3,000 - 10,000 Hz;
rated 1 W per channel minimum RMS power, with no more than
10 % total harmonic distortion in AC operation.
Other Specifications
CD player section
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a distance of about
200 mm from the objective lens surface on the optical
pick-up block with 7 mm aperture.)
Spindle speed
200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels
2
Frequency response
20 - 20,000 Hz +1/–2 dB
Wow and flutter
Below measurable limit
Sony Corporation
9-873-132-15
Personal Audio Group
2005I02-1
Published by Sony Engineering Corporation
© 2005.09
CFD-G70
Model Name Using
Similar Mechanism
CD Mechanism Type
Optical Pick-up Type
Tape Transport Mechanism Type

SPECIFICATIONS

Radio section
Frequency range
FM: 87.6 - 108 MHz
AM: 530 - 1,710 kHz
Antennas
FM: Telescopic antenna
AM: Built-in ferrite bar antenna
Cassette-corder section
Recording system
4-track 2 channel stereo
Fast winding time
Approx. 120 sec. with Sony cassette C-60
Frequency response
TYPE I (normal): 70 - 13,000 Hz
General
Speakers
Main speaker: 10 cm (4 in.) dia., 3.2 Ω, cone type (2)
Subwoofer: 8 cm (3
GAME Xpand: 5 cm (2 in.) dia., 12 Ω, cone type (2)
Inputs
LINE IN jack (stereo minijack): sensitivity 436 mV
Outputs
Headphones jack (stereo minijack): for 16 - 68 Ω
impedance headphones
CD RADIO CASSETTE-CORDER
US Model
Canadian Model
E Model
CD Section
CFD-S40CP
Tape Section
CFD-S40CP
KSM-213CDP
KSS-213C
MF-V5-117
in.) dia., 4 Ω, cone type (1)
1 ⁄4
– Continued on page 2 –

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Summary of Contents for Sony CFD-G70

  • Page 1: Specifications

    Recording system 10 % total harmonic distortion in AC operation. 4-track 2 channel stereo Fast winding time Other Specifications Approx. 120 sec. with Sony cassette C-60 CD player section Frequency response System TYPE I (normal): 70 - 13,000 Hz Compact disc digital audio system...
  • Page 2: Table Of Contents

    LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 3: Servicing Notes

    CFD-G70 SECTION 1 SERVICING NOTES SAFETY CHECK-OUT (US model) NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT After correcting the original service problem, perform the following safety check before releasing the set to the customer: The laser diode in the optical pick-up block may suffer electro- Check the antenna terminals, metal trim, “metallized”...
  • Page 4 CFD-G70 • Service Position Note: For removal, a screwdriver with the long shaft 25cm or more is required. Repair without removing Headphone board. Cabinet (front) ASSY Cabinet (rear) ASSY Cabinet top ASSY Main board Tuner board...
  • Page 5: General

    CFD-G70 SECTION 2 GENERAL This section is extracted from instruction manual. LOCATION AND FUNCTION OF CONTROLS 23 45 1 Tape operation buttons qa SOUND button REC z qs RADIO BAND/AUTO PRESET button PLAY N qd POWER DRIVE WOOFER button REW m qf CD: AMS >...
  • Page 6: Disassembly

    CFD-G70 SECTION 3 DISASSEMBLY The equipment can be removed using the following procedure. Cabinet (front) ASSY Control-1 board, Control-2 board Headphone board Cabinet (rear) ASSY Cabinet top ASSY LCD board AC inlet board, Power board, BATT board, VOL SEL board (E4 model)
  • Page 7: Control-1 Board, Control-2 Board

    CFD-G70 3-2. CONTROL-1 BOARD, CONTROL-2 BOARD 6 Button (power) 7 Button (top) sub ASSY 6 Button (volume) 8 Control-2 board 4 Screws (+BVTP 2.6 × 8) 3 Control-1 board 1 Screws (+BVTP 2.6 × 8) Button (front) 4 Screws (+BVTP 2.6 × 8) 3-3.
  • Page 8: Cabinet Top Assy

    CFD-G70 3-4. CABINET TOP ASSY 2 Screws (+BVTP 3 × 10) Cabinet top ASSY 1 Connector (from Power board CNP903) 1 Connector (from Tuner board CNP1) 3-5. LCD BOARD LCD board 1 Screws (+BVTP 3 × 10) 2 Flexible cable...
  • Page 9: Ac Inlet Board, Power Board, Vol Sel Board

    CFD-G70 3-6. AC INLET BOARD, POWER BOARD, VOL SEL BOARD (E4 model) 1 Connector (from Power board 5 Screw (+BVTP 3 × 10) CNP902) AC inlet board 3 Screws (+BVTP 3 × 10) 5 Screw (+BVTP 3 × 10) Power board...
  • Page 10: Batt Board, Batt Com Board

    CFD-G70 3-8. BATT BOARD, BATT COM BOARD 3 Claw BATT board 1 Screw (+WH 3 × 8) BATT COM board 3-9. MAIN BOARD 1 Screws 1 Screw (+BVTP 3 × 10) (+BVTP 3 × 10) Main board 4 Flexible cable...
  • Page 11: Cd Board, Tc Board, Optical Pick-Up Block, Mechanism Deck

    CFD-G70 3-10. CD BOARD, TC BOARD, OPTICAL PICK-UP BLOCK, MECHANISM DECK 3 Screw (+P 2 × 6) 5 CD board 4 Flexible cable (from CD board CNP701) 1 Screws (+PWH 2.6 × 10) 1 Screws (+PWH 2.6 × 10) 6 Screws (+BVTP 3 ×...
  • Page 12: Optical Pick-Up (Kss-213C)

    CFD-G70 3-12. OPTICAL PIC-UP (KSS-213C) Optical pick-up (KSS-213C) Cover, CD Claws Gear Claw Claw Claw Chassis ASSY, motor (MB) (spindle) Shaft, sled 3 Bend the stopper...
  • Page 13: Adjustments

    CFD-G70 SECTION 4 ADJUSTMENTS 4-1. MECHANICAL ADJUSTMENTS 4-2. ELECTRICAL ADJUSTMENTS TAPE RECORDER SECTION 0dB = 0.775V PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened Standard Output Level swab : Output terminal HP OUT record/playback head pinch roller 32 Ω...
  • Page 14 CFD-G70 0dB = 1 µV TUNER SECTION AM IF ADJUSTMENT Adjust for a maximum reading on level meter. AM Section 450 kHz Function switch : AM Volume : MIN ): E4 AM FREQUENCY COVERAGE CHECK AM RF signal Put the lead-wire...
  • Page 15 CFD-G70 When observing the eye pattern, set the oscilloscope for AC range CD SECTION and raise certical sensitivity. Perform all CD section check and all adjustments in the test mode. CD BOARD (Conductor side) How to put the set into CD test mode 1.
  • Page 16 CFD-G70 Adjustment Location : L1: FM Tracking Adjustment TUNER BOARD CT1: FM Tracking Adjustment L3: AM Tracking Adjustment (Component side) CNP1 CT3: AM Tracking Adjustment T2: FM IF Adjustment T4: AM Frequency Coverage Adjustment T1: AM IF Adjustment L2: FM Frequency Coverage Adjustment...
  • Page 17: Diagrams

    CFD-G70 SECTION 5 DIAGRAMS 5-1. EXPLANATION OF IC TERMINALS IC802 CXP83620-031Q SYSTEM CONTROL Pin No. Pin name Description CD subcorde Q signal input Remote control signal input R-MUTE Radio mute signal output DC 1.7 V output for beep signal (Not used)
  • Page 18 CFD-G70 Pin No. Pin name Description CD function signal output — Power supply terminal Crystal oscillator terminal (153kHz) Crystal oscillator terminal (153kHz) — Not used (Open) A-MUTE Audio mute signal output EEPROM clock signal output Connect to ADJ (pin 4)
  • Page 19: Block Diagram - Tuner/Tc Section

    CFD-G70 5-2. BLOCK DIAGRAM – TUNER/TC SECTION – • Signal path. : FM : AM : REC : PB...
  • Page 20: Block Diagram - Main Section

    CFD-G70 5-3. BLOCK DIAGRAM – MAIN SECTION – • Signal path. • Abbreviation : FM CND : Canadian : REC : Mexican : PB : Central and South America : CD : 110-120V/220-240V AC changeable...
  • Page 21: Block Diagram - Cd Section

    CFD-G70 5-4. BLOCK DIAGRAM – CD SECTION – • Signal path. : CD...
  • Page 22: Printed Wiring Board - Tuner Section

    CFD-G70 5-5. PRINTED WIRING BOARD – TUNER SECTION – • Refer to page 18 for Circuit Boards Location. ANT1 TELESCOPIC ANTENNA TUNER BOARD Semiconductor Location Ref. No. Location MAIN BOARD KH802 MAIN BOARD KH801 1-680-952- (11) FERRITE-BAR ANTENNA Note on Printed Wiring Boards: •...
  • Page 23: Schematic Diagram - Tuner Section

    CFD-G70 5-6. SCHEMATIC DIAGRAM – TUNER SECTION – • Refer to page 34 for IC Block Diagrams. • Refer to page 36 for notes. • Refer to page 37 for Waveforms.
  • Page 24: Printed Wiring Board - Cd Section

    CFD-G70 5-7. PRINTED WIRING BOARD – CD SECTION – • Refer to page 18 for Circuit Boards Location. MAIN BOARD CNP802 CD BOARD M702 JW727 SLED MOTOR M701 SPINDLE MOTOR OPTICAL PICK-UP BLOCK 1-680-943- KSS-213C (11) Note on Printed Wiring Boards: •...
  • Page 25: Schematic Diagram - Cd Section

    CFD-G70 5-8. SCHEMATIC DIAGRAM – CD SECTION – • Refer to page 34, 35 for IC Block Diagrams. • Refer to page 36 for notes. • Refer to page 37 for Waveforms.
  • Page 26: Printed Wiring Board - Tc Section

    CFD-G70 5-9. PRINTED WIRING BOARD – TC SECTION – • Refer to page 18 for Circuit Boards Location. 5-10. SCHEMATIC DIAGRAM – TC SECTION – • Refer to page 35 for IC Block Diagrams. • Refer to page 36 for notes.
  • Page 27: Printed Wiring Board - Main Section

    CFD-G70 5-11. PRINTED WIRING BOARD – MAIN SECTION – • Refer to page 18 for Circuit Boards Location. Semiconductor Location CONTROL-1 Ref. No. Location BOARD CNP401 D321 LCD BOARD D322 TUNER MAIN BOARD D324 B C E BOARD D802 CNP1...
  • Page 28: Schematic Diagram - Main Section (1/2)

    CFD-G70 5-12. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) – • Refer to page 36 for notes. • Refer to page 37 for Waveforms.
  • Page 29: Schematic Diagram - Main Section (2/2)

    CFD-G70 5-13. SCHEMATIC DIAGRAM – MAIN SECTION (2/2) – • Refer to page 36 for IC Block Diagrams. • Refer to page 36 for notes.
  • Page 30: Printed Wiring Board - Control Section

    CFD-G70 5-14. PRINTED WIRING BOARD – CONTROL SECTION – • Refer to page 18 for Circuit Boards Location. CONTROL-1 BOARD Semiconductor Location Ref. No. Location D401 D402 D403 D404 D451 1-681-298- (11) MAIN BOARD CNP805 CONTROL-2 BOARD > 1-681-299- >...
  • Page 31: Schematic Diagram - Control Section

    CFD-G70 5-15. SCHEMATIC DIAGRAM – CONTROL SECTION – • Refer to page 36 for notes.
  • Page 32: Printed Wiring Board - Power Supply Section

    CFD-G70 5-16. PRINTED WIRING BOARD – POWER SUPPLY SECTION – • Refer to page 18 for Circuit Boards Location. POWER BOARD AC INLET BOARD CNJ901 AC IN VOL SEL BOARD S901 T901 1-681-303 - POWER TRANSFORMER (11) 1-681-305- (11) NOT REPLACEABLE:...
  • Page 33: Schematic Diagram - Power Supply Section

    CFD-G70 5-17. SCHEMATIC DIAGRAM – POWER SUPPLY SECTION – • Refer to page 36 for notes.
  • Page 34 CFD-G70 • IC BLOCK DIAGRAMS IC1 TA2149N IC701 LC78645NE GND1 FM RF OUT FM RF VCC1 80 79 78 77 76 75 74 73 72 71 70 69 68 65 64 63 62 61 FM RF IN AM RF IN...
  • Page 35 CFD-G70 IC301 TA2068N LOGIC MONITOR MONITOR LINE LINE BUF AMP BUF AMP TAPE TAPE BUF AMP BUF AMP MUTE AMP1 ALC2 ALC1 26dB 26dB AMP1 AMP2 AMP1 AMP2 IC702 BA6998FP-E2 DRIVE DRIVE BUFFER BUFFER LEVEL LEVEL SHIFT SHIFT – –...
  • Page 36 CFD-G70 IC321 LC75342 VREF TEST LOUT ROUT LBASS2 RBASS2 LBASS1 RBASS1 LTRE RTRE LSELO RSELO TAPE TAPE LINE LINE Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF • Voltage and waveforms are dc with respect to ground under no-signal (detuned) conditions.
  • Page 37 CFD-G70 • Waveforms – CD SECTION – – MAIN SECTION (1/2) – – TUNER SECTION – (TAPE, CD mode) 0.83-0.87 390mVp-p 3.6 Vp-p Vp-p (LPC ON) 0.82-0.88 Vp-p (LPC OFF) 75kHz 4 MHz IC2 w; VOLT/DIV : 50mVAC VOLT/DIV : 0.2 V AC...
  • Page 38: Exploded Views

    CFD-G70 SECTION 6 EXPLODED VIEWS NOTE : • -XX, -X mean standardized parts, so they • Hardware (# mark) list and accessories and The components identified by mark 0 or dotted line with mark may have some difference from the original packing materials are given in the last of this 0 are critical for safety.
  • Page 39: Cabinet (Rear) Assy

    CFD-G70 6-2. CABINET (REAR) ASSY ANT1 E4 Model F901 F902 supplied supplied E4 Model The components identified by Les composants identifiés par une mark 0 or dotted line with marque 0 sont critiques pour la mark 0 are critical for safety.
  • Page 40: Cabinet Top Assy

    CFD-G70 Ver 1.1 2002.06 6-3. CABINET TOP ASSY S801 LCD801 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-921-725-01 SCREW (2.6X10), +PWH 3-047-468-01 DAMPER 1-757-780-11 CABLE, FLEXIBLE FLAT (25 CORE) * 103 1-681-300-11 LCD BOARD 3-230-777-01 PLATE, HEAT RESISTING...
  • Page 41: Mechanism Deck Section (1)

    CFD-G70 6-4. MECHANISM DECK SECTION (1) (MF-V5-117) HRP301 HE301 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-010-01 SPRING (S/P), TORSION 3-933-004-01 CLAW, REEL 3-933-025-01 SPRING (P), TORSION * 165 3-933-021-01 SLIDER (FRP) 3-040-857-01 LEVER (P)
  • Page 42: Mechanism Deck Section (2)

    CFD-G70 6-5. MECHANISM DECK SECTION (2) (MF-V5-117) S332 S321 M321 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-933-029-01 LEVER, ERASING PREVENTION X-3377-877-2 FLYWHEEL ASSY 3-933-182-01 SPRING, CASSETTE 3-932-993-01 CHASSIS, OUTSERT 3-932-995-01 GEAR (MID) 3-343-358-01 RING, RETAINING...
  • Page 43: Optical Pick-Up Block Section

    CFD-G70 Ver 1.1 2002.06 6-6. OPTICAL PICK-UP BLOCK SECTION (KSM–213CDP) not supplied M701 (including M701) M702 The components identified by Les composants identifiés par une mark 0 or dotted line with marque 0 sont critiques pour la mark 0 are critical for safety.
  • Page 44: Electrical Parts List

    CFD-G70 SECTION 7 AC INLET BATT ELECTRICAL PARTS LIST BATT COM NOTE: • SEMICONDUCTORS • Due to standardization, replacements in the In each case, u: µ, for example: The components identified by parts list may be different from the parts speci- mark 0 or dotted line with mark uA.
  • Page 45 CFD-G70 CONTROL-1 CONTROL-2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark <IC> 1-681-298-11 CONTROL-1 BOARD **************** IC701 6-700-455-01 IC LC78645NE IC702 8-759-591-62 IC BA6998FP-E2 <CONNECTOR> <JUMPER RESISTOR> CNP401 1-784-731-11 CONNECTOR, FFC 9P JC701 1-216-864-11 METAL CHIP 1/16W <DIODE>...
  • Page 46 CFD-G70 Ver. 1.3 CONTROL-2 HEADPHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark <SWITCH> A-3021-434-A MAIN BOARD, COMPLETE (US,E92,MX) A-3021-470-A MAIN BOARD, COMPLETE (CND) S451 1-771-349-21 SWITCH, TACT (POWER) A-3021-488-A MAIN BOARD, COMPLETE (E4) S452...
  • Page 47 CFD-G70 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C325 1-104-665-11 ELECT 100uF D805 8-719-991-33 DIODE 1SS133T-77 D806 8-719-991-33 DIODE 1SS133T-77 C328 1-127-880-21 CERAMIC 0.022uF D807 8-719-991-33 DIODE 1SS133T-77 C329 1-127-884-21 CERAMIC 0.047uF D808 8-719-109-89 DIODE RD5.6ESB2...
  • Page 48 CFD-G70 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q813 8-729-036-58 TRANSISTOR KRC102M-AT R340 1-249-417-11 CARBON 1/4W F R341 1-249-385-11 CARBON 1/6W F Q815 8-729-036-77 TRANSISTOR KRC107M R343 1-249-441-11 CARBON 100K 1/4W Q818 8-729-037-34 TRANSISTOR KRA107M...
  • Page 49 CFD-G70 Ver 1.2 MAIN POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R853 1-249-437-11 CARBON 1/4W 0 F902 1-576-193-11 FUSE (6.3A/125V) (EXCEPT E4) R854 1-249-429-11 CARBON 1/4W R855 1-249-417-11 CARBON 1/4W F <TRANSFORMER> R856 1-249-425-11 CARBON 4.7K...
  • Page 50 CFD-G70 TUNER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark <RESISTOR> 1-107-826-11 CERAMIC CHIP 0.1uF 1-126-960-11 ELECT R101 1-216-835-11 METAL CHIP 1/16W R102 1-216-807-11 METAL CHIP 1/16W 1-107-826-11 CERAMIC CHIP 0.1uF R103 1-216-843-11 METAL CHIP 1/16W...
  • Page 51 CFD-G70 Ver 1.1 2002.06 TUNER VOL SEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 8-719-078-48 DIODE KV1471ETR1-3 1-216-821-11 METAL CHIP 1/16W 8-719-050-69 DIODE KV1520N 1-216-821-11 METAL CHIP 1/16W 8-719-988-61 DIODE 1SS355TE-17 1-216-821-11 METAL CHIP 1/16W 8-719-988-61 DIODE 1SS355TE-17 <TRANSFORMER>...
  • Page 52 CFD-G70 Ver. 1.4 Ref. No. Part No. Description Remark ACCESSORIES ************ A-3013-894-A REMOTE COMMANDER RMT-CG70AD A-3052-475-A CONNECTION UNIT ASSY 1-557-287-11 CORD, POWER (E92,MX) 1-569-008-21 ADAPTOR, CONVERSION (E4) 1-757-404-11 CORD, CONNECTION 1-769-412-11 CORD, POWER (E4) 1-782-126-11 CORD, POWER (US,CND) 3-027-153-01 LID, BATTERY CASE (FOR RMT-CG70AD)
  • Page 53 CFD-G70 US Model Canadian Model SERVICE MANUAL E Model 2002.06 SUPPLEMENT - 1 File this Supplement with the Service Manual. Subject : CHANGE OF CD MECHANISM (SPM-02027) CD mechanism changed to KSM-213RDP from KSM-213CDP after serial No.0029461. Please check serial No. when you exchange the parts of CD mechanism.
  • Page 54 CFD-G70 OPTICAL PICK-UP SECTION (KSM–213RDP) M701 M702 (including M701) The components identified by Les composants identifiés par une mark 0 or dotted line with marque 0 sont critiques pour la mark 0 are critical for safety. sécurité. Replace only with part num- Ne les remplacer que par une pièce...
  • Page 55 CFD-G70 MEMO...
  • Page 56 CFD-G70 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 revised page. Ver. Date Description of Revision 2002.03...

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