Sony CX-LFA660 User manual

SERVICE MANUAL
Sony Corporation
Personal Audio Division
Published by Sony Engineering Corporation
AEP Model
UK Model
CX-LFA660/LFA770
Australian Model
CX-LFA660
COMPACT DISC DECK RECEIVER
9-879-045-02
2005J16-1
© 2005.10
Ver. 1.1 2005.10
SPECIFICATIONS
CX-LFA660/LFA770
CX-LFA660/LFA770 aretheAmplifier, CD player,Tape
Deck andTuner section in XR-FA660/FA770.
Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM77B-F1BD81A
Section Base Unit Name BU-F1BD81A
Optical Pick-up Name KSM-215DCP/C2NP
TAPE Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type CMAL1Z240A
Photo : CX-LFA660
Amplifier section
CX-LFA770 for XR-FA770
DIN power output (rated): 55 + 55 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
70 + 70 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
125 + 125 W
CX-LFA660 for XR-FA660
European model:
DIN power output (rated): 40 + 40 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
50 + 50 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
85 + 85 W
Other models:
The following measured at AC 230 – 240 V, 50/60 Hz
DIN power output (rated): 40 + 40 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
50 + 50 W
(6 ohms at 1 kHz, 10%
THD)
Inputs
MD IN (RCA pin jacks): Sensitivity 2 V,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
Accepts headphones with
an impedance of 32 ohms
or more
SPEAKER: Accepts impedance of
6ohms
CD player section
Laser Semiconductor laser
(λ=770 – 810 nm)
Emission duration:
continuous
Frequency response 20 Hz – 20 kHz
Tape deck section
Recording system 4-track 2-channel, stereo
— Continued on next page —
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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2
CX-LFA660/LFA770
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 3
2. GENERAL ................................................................... 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 8
3-2. Top Cabinet, Tuner (FM/AM), DC Fan.......................... 9
3-3. Panel (DVD) .................................................................... 9
3-4. CD Mechanism Section................................................... 10
3-5. Front Panel Section ......................................................... 10
3-6. MAIN Board.................................................................... 11
3-7. FRONT Board ................................................................. 11
3-8. Cassette Deck Mechanism............................................... 12
3-9. Power Transformer .......................................................... 12
3-10. Tray (AU) ........................................................................ 13
3-11. MS-128 Board ................................................................. 13
3-12. Base Unit, Belt, Driving Gear ......................................... 14
4. TEST MODE ............................................................... 15
5. MECHANICAL ADJUSTMENTS......................... 16
6. ELECTRICAL ADJUSTMENTS .......................... 17
7. DIAGRAMS
7-1. Block Diagram – BD Section – ...................................... 22
– MAIN Section – ........................................................... 23
7-2. Printed Wiring Board – BD81A Section – ..................... 24
7-3. Schematic Diagram – BD81A Section – ........................ 25
7-4. Printed Wiring Boards – MAIN Section – ..................... 26
7-5. Schematic Diagram – MAIN Section (1/2) – ................. 27
7-6. Schematic Diagram – MAIN Section (2/2) – ................. 28
7-7. Printed Wiring Board – FRONT Section –..................... 29
7-8. Schematic Diagram – FRONT Section – ....................... 30
7-9. Printed Wiring Board – AMP Section – ......................... 31
7-10. Schematic Diagram – AMP Section – ............................ 32
7-11. Printed Wiring Board – PT Section – ............................. 33
7-12. Schematic Diagram – PT Section –................................ 33
8. EXPLODEDVIEWS
8-1. Overall Section ................................................................ 41
8-2. Front Section ................................................................... 42
8-3. Chassis Section................................................................ 43
8-4. CD Mechanism Deck Section (CDM77B-F1BD81A) .... 44
8-5. Base Unit (BU-F1BD81A) .............................................. 45
9. ELECTRICAL PARTS LIST .................................. 46
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
(50-kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
European model: 531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models: 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna, external
antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
European model: 230 V AC, 50/60 Hz
Australian model: 230 – 240 V AC, 50/60 Hz
Power consumption
XR-FA770: 75 W
0.3 W (in Power Saving
Mode)
XR-FA660
European model: 65 W
0.3 W (in Power Saving
Mode)
Other models: 70 W
Dimensions (w/h/d) Approx. 190 ×250 ×308
mm incl. projecting parts
and controls
Mass
CX-LFA770 for XR-FA770:
Approx. 6.1 kg
CX-LFA660 for XR-FA660:
Approx. 5.8 kg
Design and specifications are subject to change
without notice.
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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3
CX-LFA660/LFA770
SECTION 1
SERVICING NOTES
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 °C
during repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
otherthan those specifiedherein mayresult inhazardousradiation
exposure.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
•Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
•Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
•Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on the
rear exterior.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON 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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CDsection adjustment” and check
that the S curve waveforms is output three times.
MODEL IDENTIFICATION
– Back Panel –
Part No.
Model Name Part No.
AEP and UK models 2-067-053-0[ ]
Australian model 2-067-053-2[ ]
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
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4
CX-LFA660/LFA770
• SERVICE POSITION OF THE CD MECHANISM DECK
• SERVICE POSITION OF THETAPE CASSETTE MECHANISM DECK
CD mechanism deck
holder mech
* 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
tape cassette mechanism dec
k
front panel
* Remove the CD mechanism deck and the Holder mech from the unit and check the tape cassette mechanism deck with
the front panel being open.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
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5
CX-LFA660/LFA770
SECTION 2
GENERAL This section is extracted
from instruction manual.
Main unit
ALBUM +/– qj (10, 11, 16)
BASS/TRE qa (18)
Cassette compartment qd
CD SYNC wa (16)
Disc tray 6
DISPLAY 8(14, 21)
Display window 5
i-Bass q; (18)
MD ql (23)
PHONES jack qf
PLAY MODE qs (9, 11, 15, 16,
17)
Remote sensor 7
TUNER/BAND 4(12, 13)
TUNING +/– qk (12, 13)
TUNING MODE qs (12, 13)
VOLUME control qg (26)
?/1 (power) 1(7, 13, 26)
TAPE nN (play) 2(15, 16)
CD NX (play/pause) 3(9)
ZCD (open/close) 9(9)
ZPUSH OPEN (tape open/close)
qd (15)
x(stop) qh (10, 12, 15, 16, 26)
m/M (rewind/fast forward)
qk (10, 15)
l/L (go back/go forward)
qk (10, 17, 18)
zREC PAUSE/START (record)
w; (16)
List of button locations and reference pages
How to use this page
Use this page to find the location of buttons and other
parts of the system that are mentioned in the text.
Ill
us
t
ra
ti
on num
b
er
r
DISPLAY 8( 14, 21 )
RR
Name of button/part Reference page
ALPHABETICAL ORDER
A – O P – Z
BUTTON DESCRIPTIONS
1234 567 8
9
q;
qa
qs
qf
qd
qg
qhqjqk
ql
w;
wa
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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6
CX-LFA660/LFA770
Remote control
ALBUM +/– qs (10, 11)
CD qj (9, 11)
CLEAR qf (11)
CLOCK/TIMER SELECT 2
(19, 20)
CLOCK/TIMER SET 3(8, 19,
20)
DISC SKIP* q;
DISPLAY w; (14, 21)
ENTER 9(8, 11, 12, 19, 20)
EQ qd (18)
FM MODE 4(14)
FUNCTION 6(9, 11, 15, 20, 23)
PLAY MODE ql (9, 11, 15, 20)
REPEAT 4(10)
SLEEP wa (18)
TAPE qh (15, 20)
TUNER BAND 5(12, 13)
TUNER MEMORY qk (12)
TUNING MODE ql (12, 13)
VOLUME +/– qa (19)
?/1 (power) 1(7, 19)
m/M (rewind/fast forward)
7(10, 15)
x(stop) 8(10, 12, 15)
X(pause) 8(10, 15)
N(play) 8(9, 15, 20)
./> (go back/go forward)
qg (8, 10, 18, 19)
+/– (tuning) qg (12)
*Button does not function with
this model.
ALPHABETICAL ORDER
A – O P – Z
BUTTON DESCRIPTIONS
4
5
6
7
8
9
1
qs
qf
qd
w;
wa
ql
qk
qj
qh
qg
qa
0
3
2
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
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7
CX-LFA660/LFA770
Use buttons on the remote for the operation.
1Press ?/1 to turn on the system.
2Press CLOCK/TIMER SET.
3Press .or >repeatedly to set the
hour.
4Press ENTER.
5Press .or >repeatedly to set the
minute.
6Press ENTER.
The clock starts working.
To adjust the clock
1 Press CLOCK/TIMER SET.
2 Press.or>repeatedlyuntil“CLOCK”
appears, then press ENTER.
3 Do the same procedures as step 3 to 6
above.
Setting the clock
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CX-LFA660/LFA770 SECTION 3
DISASSEMBLY
3-1. DISASSEMBLY FLOW
3-4. CD MECHANISM SECTION
(Page 10)
3-3. PANEL (DVD)
(Page 9)
3-6. MAIN BOARD
(Page 11) 3-10.TRAY (AU) (Page 13)
3-11. MS-128 BOARD
(Page 13)
3-12. BASE UNIT, BELT,
DRIVING GEAR
(Page 14)
3-9. POWER TRANSFORMER
(Page 12)
3-5. FRONT PANEL SECTION
(Page 10)
3-7. FRONT BOARD
(Page 11) 3-8. CASSETTE DECK MECHANISM (Page 12)
SET
3-2.TOP CABINET, TUNER (FM/AM),
DC FAN
(Page 9)
•This set can be disassembled in the order shown below.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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9
CX-LFA660/LFA770
Note: Follow the disassembly procedure in the numerical order given.
3-2. TOP CABINET, TUNER (FM/AM), DC FAN
1 two s crews
(+BVTP 3
× 8)
2 two s crews
(+BVTP 3 × 8)
3 five s crews
(+BVTP 3 × 8)
q; connector
(3P)(CN290)
qd rear panel
5 top cabinet
4
qs DC fan
a
a
b
b
qa four s crews
(+BVTP 3 × 8)
7 three s crews
(+BVTP 3 × 8)
6 three s crews
(+BVTP 3 × 10)
8 wire (flat type)
(15 core)
9 tuner
3-3. PANEL (DVD)
2 Pull-out the disc tray.
1 Move the chuck cam located at the bottom of the CD mechanism in the direction of the arrow
using the flathead screwdriver.
holder mecha
CD mechanism
chuck cam
5 panel (DVD)
4 base loading
3 four claws
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
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CX-LFA660/LFA770
3-4. CD MECHANISM SECTION
1 two s crews
(+BVTP 2.6 × 8)
8 two s crews
(+BVTP 3 × 8)
q; holder mecha
3 three s crews
(+BVTP 3 × 10)
7 s crew
(+BVTP 3 × 10
)
2 shield case (mecha)
4 wire (flat type)
(27 core)
5 wire (flat type) (5 core)
6 CD mechanism deck
(CDM77B-F1BD81A)
9 two s crews
(+BVTP 3 × 10)
3-5. FRONT PANEL SECTION
qs claw
qd claw
qf front panel section
1 screw
(+B 3)
3 screw
(+B 3)
q; two screws
(+KTP 3
× 8)
qa two screws
(+KTP 3
× 8)
7 screw
(+KTP 3
× 8)
2 earth wire
4 earth wire
6 wire (flat type)
(21core) (CN602)
9 connector
(7P) (CN601)
8 connector
(5P) (CN201)
5 wire (flat type)
(25core) (CN603)
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com