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Sony CX-LFA660 Service Manual

Aep model; uk model cx-lfa660/lfa770; australian model cx-lfa660
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CX-LFA660/LFA770
QQ
3 7 63 1515 0

SERVICE MANUAL

Ver. 1.1 2005.10
CX-LFA660/LFA770 are the Amplifier, CD player, Tape
Deck and Tuner section in XR-FA660/FA770.
TE
L 13942296513
Amplifier section
CX-LFA770 for XR-FA770
DIN power output (rated): 55 + 55 W
Continuous RMS power output (reference):
Music power output (reference):
CX-LFA660 for XR-FA660
European model:
DIN power output (rated): 40 + 40 W
Continuous RMS power output (reference):
Music power output (reference):
Other models:
The following measured at AC 230 – 240 V, 50/60 Hz
DIN power output (rated): 40 + 40 W
www
.
Sony Corporation
9-879-045-02
Personal Audio Division
2005J16-1
Published by Sony Engineering Corporation
© 2005.10
http://www.xiaoyu163.com
(6 ohms at 1 kHz, DIN)
70 + 70 W
(6 ohms at 1 kHz, 10%
THD)
125 + 125 W
(6 ohms at 1 kHz, DIN)
50 + 50 W
(6 ohms at 1 kHz, 10%
THD)
85 + 85 W
(6 ohms at 1 kHz, DIN)
x
ao
u163
y
i
http://www.xiaoyu163.com
2 9
8
Photo : CX-LFA660
Model Name Using Similar Mechanism
CD
CD Mechanism Type
Section
Base Unit Name
Optical Pick-up Name
TAPE
Model Name Using Similar Mechanism
Q Q
Section
Tape Transport Mechanism Type
3
6 7
1 3
1 5
SPECIFICATIONS
Continuous RMS power output (reference):
Inputs
MD IN (RCA pin jacks): Sensitivity 2 V,
Outputs
PHONES (stereo mini jack):
SPEAKER:
CD player section
Laser
Frequency response
Tape deck section
Recording system
COMPACT DISC DECK RECEIVER
co
.
9 4
2 8
AEP Model
UK Model
CX-LFA660/LFA770
Australian Model
NEW
CDM77B-F1BD81A
BU-F1BD81A
KSM-215DCP/C2NP
NEW
CMAL1Z240A
0 5
8
2 9
9 4
2 8
50 + 50 W
(6 ohms at 1 kHz, 10%
THD)
impedance 47 kilohms
Accepts headphones with
an impedance of 32 ohms
or more
Accepts impedance of
6 ohms
Semiconductor laser
(λ=770 – 810 nm)
Emission duration:
continuous
20 Hz – 20 kHz
4-track 2-channel, stereo
— Continued on next page —
m
9 9
CX-LFA660
9 9
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Summary of Contents for Sony CX-LFA660

  • Page 1: Service Manual

    AEP Model UK Model Ver. 1.1 2005.10 CX-LFA660/LFA770 Australian Model CX-LFA660 Photo : CX-LFA660 CX-LFA660/LFA770 are the Amplifier, CD player, Tape Deck and Tuner section in XR-FA660/FA770. Model Name Using Similar Mechanism CD Mechanism Type CDM77B-F1BD81A Section Base Unit Name...

  • Page 2: Table Of Contents

    CX-LFA660/LFA770 3 7 63 1515 0 TABLE OF CONTENTS Frequency response 50 – 13,000 Hz (±3 dB), using Sony TYPE I cassettes SERVICING NOTES ..........3 Tuner section GENERAL ..............5 FM stereo, FM/AM superheterodyne tuner FM tuner section...

  • Page 3: Servicing Notes

    Part No. THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. AEP and UK models 2-067-053-0[ ] REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE Australian model 2-067-053-2[ ] PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 4 CX-LFA660/LFA770 3 7 63 1515 0 • SERVICE POSITION OF THE CD MECHANISM DECK * Lay the CX-LFA660/LFA770 with the left-side facing downward and then check the CD mechanism deck after removing it from the Holder Mech. MAIN Board holder mech...

  • Page 5: General

    CX-LFA660/LFA770 SECTION 2 3 7 63 1515 0 GENERAL This section is extracted from instruction manual. List of button locations and reference pages How to use this page Illustration number Use this page to find the location of buttons and other...
  • Page 6 CX-LFA660/LFA770 3 7 63 1515 0 Remote control ALPHABETICAL ORDER BUTTON DESCRIPTIONS ?/1 (power) 1 (7, 19) A – O P – Z m/M (rewind/fast forward) ALBUM +/– qs (10, 11) PLAY MODE ql (9, 11, 15, 20) 7 (10, 15)
  • Page 7 CX-LFA660/LFA770 3 7 63 1515 0 Setting the clock Use buttons on the remote for the operation. Press ?/1 to turn on the system. Press CLOCK/TIMER SET. Press . or > repeatedly to set the hour. Press ENTER. Press . or > repeatedly to set the minute.

  • Page 8: Disassembly

    CX-LFA660/LFA770 SECTION 3 3 7 63 1515 0 DISASSEMBLY 3-1. DISASSEMBLY FLOW • This set can be disassembled in the order shown below. 3-2. TOP CABINET, TUNER (FM/AM), DC FAN (Page 9) 3-3. PANEL (DVD) (Page 9) 3-4. CD MECHANISM SECTION (Page 10) 3-5.

  • Page 9: Top Cabinet, Tuner (Fm/Am), Dc Fan

    CX-LFA660/LFA770 3 7 63 1515 0 Note: Follow the disassembly procedure in the numerical order given. 3-2. TOP CABINET, TUNER (FM/AM), DC FAN 5 top cabinet 3 five s crews (+BVTP 3 × 8) 2 two s crews qd rear panel qa four s crews (+BVTP 3 ×...

  • Page 10: Cd Mechanism Section

    CX-LFA660/LFA770 3 7 63 1515 0 3-4. CD MECHANISM SECTION 1 two s crews (+BVTP 2.6 × 8) 2 shield case (mecha) 3 three s crews (+BVTP 3 × 10) 6 CD mechanism deck (CDM77B-F1BD81A) 4 wire (flat type)

  • Page 11: Main Board

    CX-LFA660/LFA770 3 7 63 1515 0 3-6. MAIN BOARD 2 wire (flat type) (25core) (CN603) 5 connector (7P) (CN601) q; MAIN board 3 wire (flat type) (21core) (CN602) 9 sheet (PWB MAIN) 7 connector (9P) (CN002) 8 connector (11P) (CN003)

  • Page 12: Cassette Deck Mechanism

    CX-LFA660/LFA770 3 7 63 1515 0 3-8. CASSETTE DECK MECHANISM 3 cassette deck mechanism 1 four screws (+BVTP 3 × 10) 2 earth wire L 13942296513 3-9. POWER TRANSFORMER 5 binding band 4 binding band 3 four s crews 7 s crew (+BVTP 3 ×...

  • Page 13: Tray (Au)

    CX-LFA660/LFA770 3 7 63 1515 0 3-10. TRAY (AU) 1 Move the Chuck cam in the direction of the arrow. bottom side 3 two claws 5 tray (AU) L 13942296513 3-11. MS-128 BOARD 1 belt 2 wire (flat type)

  • Page 14: Base Unit, Belt, Driving Gear

    CX-LFA660/LFA770 3 7 63 1515 0 3-12. BASE UNIT, BELT, DRIVING GEAR 4 belt 6 support 5 claw 8 pulley gear 1 two claws 9 driving gear 7 claw L 13942296513 3 base unit (BU-F1BD81A) u163 http://www.xiaoyu163.com...

  • Page 15: Test Mode

    CX-LFA660/LFA770 SECTION 4 3 7 63 1515 0 TEST MODE 4. Repeat 5 Times Limit Release Mode Note 1: Regarding the notification symbol “R” Procedure: Because the number of the operating buttons of this product 1. Press the ?/1 button to turn the power on.

  • Page 16: Mechanical Adjustments

    CX-LFA660/LFA770 SECTION 5 3 7 63 1515 0 MECHANICAL ADJUSTMENTS Precaution 1. Clean the following parts with a denatured alcohol-moistened swab: record/playback heads pinch rollers erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demag- netizer.

  • Page 17: Electrical Adjustments

    CX-LFA660/LFA770 SECTION 6 3 7 63 1515 0 ELECTRICAL ADJUSTMENTS 3. Mode: Playback DECK SECTION 0 dB=0.775V test tape MAIN board P-4-A100 1. Demagnetize the record/playback head with a head (10kHz, –10dB) J201 demagnetizer. speaker terminal oscilloscope 2. Do not use a magnetized screwdriver for the adjustments.
  • Page 18 CX-LFA660/LFA770 3 7 63 1515 0 RFDC signal waveform CD SECTION VOLT/DIV: 200 mV TIME/DIV: 500 ns Note: 1. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 2. Use an oscilloscope with more than 10MΩ impedance. 3. Clean the object lens by an applicator with neutral detergent when the level: 0.6 ±...
  • Page 19 CX-LFA660/LFA770 3 7 63 1515 0 E-F Balance Adjustment Checking Location: Connection: – BD81A BOARD (Side B) – oscilloscope BD81A board BD81A BOARD TP (TEO) (SideB) TP (VC) – Procedure: Connect an oscilloscpe to test point TP (TEO) and TP (VC) on IC303 the BD81A board.
  • Page 20 CX-LFA660/LFA770 3 7 63 1515 0 MEMO L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 21: Diagrams

    CX-LFA660/LFA770 SECTION 7 3 7 6 3 1 5 1 5 0 DIAGRAMS • 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.) For Schematic Diagrams.

  • Page 22: Block Diagram - Bd Section

    CX-LFA660/LFA770 7-1. BLOCK DIAGRAM — BD SECTION — 3 7 6 3 1 5 1 5 0 OPTICAL PICK-UP BLOCK (KSM-215DCP/C2NP) DETECTOR IC301 DIGITAL SIGNAL IC101 +1.7V PROCESSOR RF AMP +3.3V IC303 PCMD1 SDO0 3.3V LRCK1 LRCKIA LRCK SFSY/LRCK1B...

  • Page 23: Main Section

    CX-LFA660/LFA770 — MAIN SECTION — 3 7 6 3 1 5 1 5 0 Q101,103,105 PB/REC EQ AMP Q107,109 R-CH J601 IC601 Q111,113,127 Q117,119 R-CH POWER J702 AUX L OUT L HEADPHONES TU L OUT R R-CH R-CH TAPE L...

  • Page 24: Printed Wiring Board - Bd81A Section

    CX-LFA660/LFA770 • See page 21 for Circuit Boards Location. 7-2. PRINTED WIRING BOARD — BD81A SECTION — :Uses unleaded solder. 3 7 6 3 1 5 1 5 0 SPINDLE MOTOR IC303 (LIMIT) IC301 SLED MOTOR IC251 1 3 9 4 2 2 9 6 5 1 3...

  • Page 25: Schematic Diagram - Bd81A Section

    CX-LFA660/LFA770 • See page 34, 35 for IC Block Diagrams. • See page 34 for Waveforms. 7-3. SCHEMATIC DIAGRAM — BD81A SECTION — • Refer to page 36 for IC Pin Function Description. 3 7 6 3 1 5 1 5 0...

  • Page 26: Printed Wiring Boards - Main Section

    CX-LFA660/LFA770 • See page 21 for Circuit Boards Location. 7-4. PRINTED WIRING BOARD — MAIN SECTION — :Uses unleaded solder. 3 7 6 3 1 5 1 5 0 • Semiconductor Location Ref. No. Location Ref. No. Location D001...

  • Page 27: Schematic Diagram - Main Section (1/2)

    CX-LFA660/LFA770 • See page 34 for IC Block Diagrams. 7-5. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — 3 7 6 3 1 5 1 5 0 IC501 BA6956AN L660,664,666 L661,665,667 FB665 CN604 10uH 10uH FB665 NO MOUNT CN501 FB661...

  • Page 28: Schematic Diagram - Main Section (2/2)

    CX-LFA660/LFA770 7-6. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — 3 7 6 3 1 5 1 5 0 D042 D029 1SS133T-77 1SS133T-77 Q064 D043 D038 2SC1623-L5L6 R052 1SS133T-77 1SS133T-77 Q060 D028 C061 DTC114EKA 1SS133T-77 47 35V T146 R063 C032...

  • Page 29: Printed Wiring Board - Front Section

    CX-LFA660/LFA770 • See page 21 for Circuit Boards Location. 7-7. PRINTED WIRING BOARD — FRONT SECTION — :Uses unleaded solder. 3 7 6 3 1 5 1 5 0 FRONT BOARD IC802 • Semiconductor 44 45 Location Ref. No.

  • Page 30: Schematic Diagram - Front Section

    CX-LFA660/LFA770 • See page 34 for Waveforms. 7-8. SCHEMATIC DIAGRAM — FRONT SECTION — • Refer to page 39 for IC Pin Function Description. 3 7 6 3 1 5 1 5 0 FL801 R870 HNA-12SS27 R878 R872 R876...

  • Page 31: Printed Wiring Board - Amp Section

    CX-LFA660/LFA770 • See page 21 for Circuit Boards Location. 7-9. PRINTED WIRING BOARD — AMP SECTION — :Uses unleaded solder. 3 7 6 3 1 5 1 5 0 • Semiconductor Location MAIN MAIN BOARD BOARD Ref. No. Location...

  • Page 32: Schematic Diagram - Amp Section

    CX-LFA660/LFA770 7-10. SCHEMATIC DIAGRAM — AMP SECTION — 3 7 6 3 1 5 1 5 0 D111 R123 R125 1SS133T-77 R157 4.7k D101 2.2k D105 1SS133T-77 1/4W 1/4W 1SS133T-77 TH101 Q119 D107 2SD2642 R115 1SS133T-77 2.2k R117 1/4W...

  • Page 33: Printed Wiring Board - Pt Section

    CX-LFA660/LFA770 • See page 21 for Circuit Boards Location. 7-11. PRINTED WIRING BOARD — PT SECTION — 7-12. SCHEMATIC DIAGRAM — PT SECTION — 3 7 6 3 1 5 1 5 0 :Uses unleaded solder. MAIN PT BOARD...
  • Page 34 CX-LFA660/LFA770 3 7 6 3 1 5 1 5 0 • Waveforms – BD81A Board – – BD81A Board – – FRONT Board – IC301 TC94A34FG-002 IC101 ra (RFACO) IC101 ws (TEO) IC801 qd (32.768 kHz) (CD Play Mode)
  • Page 35 CX-LFA660/LFA770 3 7 63 1515 0 IC251 BA5947FM CH1PUTF CH4OUTR CH1OUTR CH4OUTF CH2OUTF CH3OUTF PIN26 6.5k CH3OUTR CH2OUTR Vref POWVCC POWVCC (ch3, 4) (ch1, 2) 50k 50k 50k 50k CNF4 MUTE 50k 50k Vref PREGND CH2RIN CH3RIN CH3FIN CH2FIN...
  • Page 36 CX-LFA660/LFA770 3 7 63 1515 0 • IC Pin Function Description • BD81A BOARD IC101 CXD3059AR (RF AMP) Pin No. Pin Name Description MIRR Mirror signal input/output (Not used) DFCT Defect signal input/output (Not used) Focus OK signal input/output (Not used) —...
  • Page 37 CX-LFA660/LFA770 3 7 63 1515 0 Pin No. Pin Name Description VPCO Wide-band EFM PLL charge pump output (Not used) VCTL Wide-band EFM PLL VCO2 control voltage input AVSS3 — Analog ground CLTV Multiplier VCO1 control voltage input FILO...
  • Page 38 CX-LFA660/LFA770 3 7 63 1515 0 Pin No. Pin Name Description IOVSS0 — I/O digital ground Oscillation circuit control XTACN Self-oscillation when high, oscillation stop when low Subcode Q 80-bit and PCM peak and level data output SQSO CD TEXT data output...
  • Page 39 CX-LFA660/LFA770 3 7 63 1515 0 • FRONT BOARD IC801 LC876980B-53L3-E (SYSTEM CONTROLLER) Pin No. Pin Name Description MI-ACK MIACK signal input to the CD unit MP3-RST Reset signal output to the CD unit MP3-REQ Request signal input to the CD unit...
  • Page 40 CX-LFA660/LFA770 3 7 63 1515 0 Pin No. Pin Name Description VDD4 — Power supply terminal TU-CE Tuner chip enable signal output to the tuner TU-CLOCK Tuner clock signal output TU-DI Tuner data input TU- DO Tuner data output...

  • Page 41: Exploded Views

    CX-LFA660/LFA770 Ver. 1.1 SECTION 8 3 7 63 1515 0 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • The mechanical parts with no reference The components identified by mark 0 or may have some difference from the original number in the exploded views are not supplied.

  • Page 42: Front Section

    CX-LFA660/LFA770 Ver. 1.1 3 7 63 1515 0 8-2. FRONT PANEL SECTION supplied supplied supplied supplied supplied supplied supplied supplied supplied supplied L 13942296513 supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 2-059-825-11 WINDOW (CASSETTE)

  • Page 43: Chassis Section

    CX-LFA660/LFA770 3 7 63 1515 0 B8-3. CHASSIS SECTION supplied supplied supplied supplied supplied PT252 supplied L 13942296513 supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-469-636-11 CORE, FERRITE (ESD-R-25SD) A-1056-982-A MAIN (A) BOARD, COMPLETE (660:AEP,UK)

  • Page 44: Cd Mechanism Deck Section (Cdm77B-F1Bd81A)

    CX-LFA660/LFA770 Ver. 1.1 3 7 63 1515 0 8-4. CD MECHANISM DECK SECTION (CDM77B-F1BD81A) M001 supplied supplied L 13942296513 base unit (BU-F1BD81A) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-243-742-01 TRAY (AU) 4-229-005-21 INSULATOR...

  • Page 45: Base Unit (Bu-F1Bd81A)

    CX-LFA660/LFA770 Ver. 1.1 3 7 63 1515 0 8-5. BASE UNIT (BU-F1BD81A) L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4751-431-A BD81A BOARD, COMPLETE 1-828-659-11 WIRE (FLAT TYPE) (27 CORE) 0 202 8-820-244-01 OPTICAL PICK-UP (KSM-215DCP/C2NP) 3-087-053-01 +BVTP 2.6 (3CR)

  • Page 46: Electrical Parts List

    CX-LFA660/LFA770 SECTION 9 3 7 63 1515 0 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • COILS When indicating parts by reference number, uH: µH parts list may be different from the parts please include the board name.
  • Page 47 CX-LFA660/LFA770 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 R130 Q119 6-550-311-01 TRANSISTOR 2SD2642 1-216-361-31 METAL OXIDE 0.22 (660) Q120 6-550-311-01 TRANSISTOR 2SD2642 0 R130 1-245-545-11 METAL OXIDE 0.22...
  • Page 48 CX-LFA660/LFA770 BD81A 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R274 1-216-833-11 METAL CHIP 1/10W C210 1-107-826-11 CERAMIC CHIP 0.1uF R277 1-218-867-11 METAL CHIP 6.8K 0.5% 1/10W C211 1-164-230-11 CERAMIC CHIP...
  • Page 49 CX-LFA660/LFA770 3 7 63 1515 0 BD81A FRONT Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R132 1-216-833-11 METAL CHIP 1/10W < CAPACITOR > R133 1-216-848-11 METAL CHIP 180K 1/10W R141 1-216-829-11 METAL CHIP 4.7K...
  • Page 50 CX-LFA660/LFA770 FRONT 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > R814 1-216-841-11 METAL CHIP 1/10W R815 1-216-821-11 METAL CHIP 1/10W D802 8-719-053-43 DIODE SLR-325VCT31 (?/1) D803 8-719-991-33 DIODE 1SS133T-77...
  • Page 51 CX-LFA660/LFA770 3 7 63 1515 0 FRONT Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R871 1-216-821-11 METAL CHIP 1/10W R930 1-216-809-11 METAL CHIP 1/10W R872 1-216-833-11 METAL CHIP 1/10W R931 1-216-809-11 METAL CHIP 1/10W...
  • Page 52 CX-LFA660/LFA770 MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark HP BOARD C201 1-128-552-51 ELECT 47uF C202 1-128-552-51 ELECT 47uF ********* C225 1-130-495-00 MYLAR 0.1uF < JACK > C226 1-130-495-00 MYLAR 0.1uF...
  • Page 53 CX-LFA660/LFA770 3 7 63 1515 0 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C633 1-126-923-91 ELECT 220uF CN602 1-568-838-11 CONNECTOR, FFC 21P C634 1-164-156-11 CERAMIC CHIP 0.1uF CN603 1-784-786-11 CONNECTOR, FFC 25P C635 1-164-156-11 CERAMIC CHIP 0.1uF...
  • Page 54 CX-LFA660/LFA770 MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < EARTH TERMINAL > Q205 8-729-600-22 TRANSISTOR 2SA1235-F Q206 8-729-120-28 TRANSISTOR 2SC1623-L5L6 * EP001 1-537-738-21 TERMINAL, EARTH Q290 8-729-036-89 TRANSISTOR KTC3198GR-AT <...
  • Page 55 CX-LFA660/LFA770 3 7 63 1515 0 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R062 1-216-841-11 METAL CHIP 1/10W R451 1-216-836-11 METAL CHIP 1/10W R063 1-216-833-11 METAL CHIP 1/10W R452 1-249-390-11 CARBON 1/4W R065 1-249-428-11 CARBON 8.2K...
  • Page 56 CX-LFA660/LFA770 MAIN MS-128 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R627 1-249-421-11 CARBON 2.2K 1/4W R667 1-216-837-11 METAL CHIP 1/10W R628 1-216-825-11 METAL CHIP 2.2K 1/10W (AUS) R629 1-216-843-11 METAL CHIP...
  • Page 57 CX-LFA660/LFA770 3 7 63 1515 0 Ref. No. Part No. Description Remark < TRANSFORMER > 0 PT251 1-439-735-11 TRANSFORMER, POWER < RESISTOR > R225 1-216-821-11 METAL CHIP 1/10W R226 1-216-821-11 METAL CHIP 1/10W R227 1-216-837-11 METAL CHIP 1/10W < RELAY >...
  • Page 58 CX-LFA660/LFA770 3 7 63 1515 0 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.

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