Page 1
FS-M3
1-2
1. This design of this product contains special hardware and many circuits and components specially for safety
purposes. For continued protection, no changes should be made to the original design unless authorized in
writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services
should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product
should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further
relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related characteristics. These
characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily
be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in the Parts List of Service Manual. Electrical
components having such features are identified by shading on the schematics and by ( ) on the Parts List in
the Service Manual. The use of a substitute replacement which does not have the same safety characteristics
as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or
other hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be
separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of
electric shock and fire hazard. When service is required, the original lead routing and dress should be
observed, and it should be confirmed that they have been returned to normal, after re-assembling.
5. Leakage currnet check (Electrical shock hazard testing)
After re-assembling the product, always perform an isolation check on the exposed metal parts of the product
(antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the
product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage
current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return
path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).
Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more
sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor
between an exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
voltmeter.
Move the resistor connection to each exposed metal part,
particularly any exposed metal part having a return path to
the chassis, and meausre the AC voltage across the resistor.
Now, reverse the plug in the AC outlet and repeat each
measurement. Voltage measured any must not exceed 0.75 V
AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).
1. This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. Repairs must be made in accordance with the relevant safety standards.
4. It is essential that safety critical components are replaced by approved parts.
5. If mains voltage selector is provided, check setting for local voltage.
Good earth groundPlace this
probe on
each exposed
metal part. AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
!
Burrs formed during molding may
be left over on some parts of the
chassis. Therefore, pay attention to
such burrs in the case of
preforming repair of this system.
In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the
parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " "
mark nearby are critical for safety.
(This regulation does not correspond to J and C version.)
Page 2
FS-M3
1-3
Short land
CD pickup unit
Connector
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap
5. Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the CD pickup unit.
Apply solder to the short land before the card wire is disconnected from
the connector on the CD pickup unit.
(If the card wire is disconnected without applying solder, the CD
pickup may be destroyed by static electricity.)
In the assembly, be sure to remove solder from the short land after
connecting the card wire. Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
Preventing static electricity
1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
2. About the earth processing for the destruction prevention by static electricity
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it
before placing the traverse unit (optical pickup) on it.
2-1 Ground the workbench
2-2 Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power
source can easily destroy the laser diode.
3. Handling the optical pickup
1.
2.
Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
Remove solder of the short land on the card wire after replacing the optical pickup. For specific details, refer to
the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit.
Be careful not to take too long a time when attaching it to the connector.
Handle the card wire carefully as it may break when subjected to strong force.
It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
4. Handling the traverse unit (optical pickup)
1.
2.
3.
4.
Page 23
FS-M3
1-24
AN7312 (IC202) : Dual recording/Playback pre-amplifier circuit with ALC
1. Terminal layout
3. Pin function2. Block diagram
17
Pin No.Symbol
I/OFunction
~
14 8 ~
GND
ALC time constant
ALC input Ch.1
Output Ch.1
Phase compensation Ch.1
N.E.B. Ch.1
Input Ch.1
Input Ch.2
N.E.B. Ch.2
Phase compensation Ch.2
Output Ch.2
ALC input Ch.2
Ripple filter
Vcc 1
2
3
4
5
6
7
8
9
10
11
12
13
14-
-
I
O
-
I
I
I
I
-
O
I
-
-GND
ALC time constant by resistance and capacitor
Right channel ALC input
Right channel output
No connect
Right channel negative feed back input
Right channel signal input
Left channel signal input
Left channel negative feed back input
No connect
Left channel output
Left channel ALC input
Ripple filter
Power supply
14 13 12 11 10 9
1 2 3 4 5 6
Ripple Filter Amp.
Ch2
8
ALC
7
GNDVcc
Amp.
Ch1
BA4558N (IC402) : Dual operational amplifier
1. Terminal layout & Block diagram
1ch 2ch
1
234
56 78
OUT1 -IN1 +IN1 V
EE +IN2 -IN2 OUT2 Vcc
2. Pin function
1
2
3
4
5
6
7
8 OUT1
-IN1
+IN1
V
EE+IN2
-IN2
OUT2
Vcc
A output
A - input
A + input
V-
B + input
B - input
B output
V+
PIN
No. Symbol
O
I
I
-
I
I
O
-
I/O Function
LA4282 (IC401) : Power amplifier
1. Terminal layout & Block diagram
1
234NF1 IN1 RIPPLE
FILTER PRE
GND IN2 6
789NF2 OUT2 MUTE POWER
GND2 Vcc 11
CH1
CH2
Vcc
510 12
Ripple
filter
Thermal
over voltage
protector
Mute
circuit 300
30k
30k
300
2. Pin function
1
2
3
4
5
6
7
8
9
10
11
12 NF1
IN1
RIPPLE FILTER
PRE GND
IN2
NF2
OUT2
MUTE
POWER GND2
Vcc
OUT1
POWER GND1 Right channel negative feed back
Right channel signal input
Ripple filter
PRE GND
Left channel signal input
Left channel negative feed back
Left channel output
Mute control
Power GND
Power supply
Right channel output
Power GND
PIN
No. Symbol
-
I
-
-
I
-
O
-
-
-
O
-
I/O Function
OUT1 POWER
GND1
Page 35
FS-M3
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Item
Parts number Parts name Ar ea
Electrical parts list (Main board)
Remarks
Block No. 01
A
C326 OW06-50475-02 E.CAPACITOR 4.7MF 50V
C327 OW06-50475-02 E.CAPACITOR 4.7MF 50V
C328 OW05-02103-10 MYLAR CAPACITOR 0.01MF 10% C329 OW05-02103-10 MYLAR CAPACITOR 0.01MF 10%
C330 OW06-16227-02 E.CAPACITOR 220MF 16V
C331 OW05-00104-00 C.CAPACITOR 0.1MF 10% 50V C332 OW06-16337-02 E.CAPACITOR 330MF 16V
C334 OW06-16227-02 E.CAPACITOR 220MF 16V
C335 OW05-00223-00 C.CAPACITOR 0.022MF 10% 50V C336 OW06-16476-02 E.CAPACITOR 47MF 16V
C341 OW06-16107-02 E.CAPACITOR 100MF 16V
C342 OW05-00104-00 C.CAPACITOR 0.1MF 10% 50V
C343 OW06-25107-00T E.CAPACITOR 100MF 25V
C344 OW06-25228-00 E.CAPACITOR 2200MF 25V
C401 OW06-50225-02 E.CAPACITOR 2.2MF 50V
C402 OW06-50225-02 E.CAPACITOR 2.2MF 50V
C403 OW05-00331-00 C.CAPACITOR 330PF
C404 OW05-00331-00 C.CAPACITOR 330PF
C405 OW06-16106-02 E.CAPACITOR 10MF 16V
C406 OW06-50225-02 E.CAPACITOR 2.2MF 50V
C407 OW06-50225-02 E.CAPACITOR 2.2MF 50V
C408 OW06-25107-00T E.CAPACITOR 100MF 25V
C409 OW06-25107-00T E.CAPACITOR 100MF 25V
C410 OW05-02104-10 MYLAR CAPACITOR 0.1MF 10% C411 OW05-02104-10 MYLAR CAPACITOR 0.1MF 10%
C412 OW06-25108-00 E.CAPACITOR 1000MF 25V
C413 OW06-25108-00 E.CAPACITOR 1000MF 25V C414 OW06-50107-02 E.CAPACITOR 100MF 50V
C415 OW06-50228-00 E.CAPACITOR A 2200MF 20% 50V
C416 OW05-07104-00 C.CAPACITOR 0.1MF 50V C417 OW06-16107-02 E.CAPACITOR 100MF 16V
C420 OW06-50225-02 E.CAPACITOR 2.2MF 50V
C421 OW06-50225-02 E.CAPACITOR 2.2MF 50V C422 OW06-16476-02 E.CAPACITOR 47MF 16V
C423 OW05-00101-06 C.CAPACITOR 100PF 5%
C424 OW05-00101-06 C.CAPACITOR 100PF 5%
C425 OW05-00101-06 C.CAPACITOR 100PF 5%
C426 OW05-00101-06 C.CAPACITOR 100PF 5%
C427 OW06-16476-02 E.CAPACITOR 47MF 16V
C428 OW06-16476-02 E.CAPACITOR 47MF 16V
C429 OW06-16227-02 E.CAPACITOR 220MF 16V
C430 OW06-16227-02 E.CAPACITOR 220MF 16V
C431 OW05-00223-00 C.CAPACITOR 0.022MF 10% 50V
C432 OW06-35227-00 E.CAPACITOR 220MF 35V
C433 OW05-00101-06 C.CAPACITOR 100PF 5%
C434 OW05-00101-06 C.CAPACITOR 100PF 5%
C435 OW06-35107-00 E.CAPACITOR 100MF 35V
C451 OW05-00104-00 C.CAPACITOR 0.1MF 10% 50V C452 OW05-00104-00 C.CAPACITOR 0.1MF 10% 50V
C453 OW05-00104-00 C.CAPACITOR 0.1MF 10% 50V
D101 OW02-00348-00TUNING DIODE SVC348-S D103 OW02-00201-00TUNING DIODE SVC201SPA
D104 OW02-00201-00TUNING DIODE SVC201SPA
D105 OW02-04148-00RDIODE 1N4148 D108 OW02-04148-00RDIODE 1N4148
D109 OW02-04148-00RDIODE 1N4148
D110 OW02-04148-00RDIODE 1N4148
D111 OW02-04148-00RDIODE 1N4148
D201 OW02-04148-00RDIODE 1N4148
D202 OW02-04148-00RDIODE 1N4148
D301 OW02-04148-00RDIODE 1N4148
D302 OW02-04148-00RDIODE 1N4148
D303 OW02-04148-00RDIODE 1N4148
D401 OW02-04148-00RDIODE 1N4148
D402 OW02-04148-00RDIODE 1N4148
FMANT OW29-00003-00 FM ANT WIRE 26UL-1007 BLK. IC101 OW03-02104-01 IC TA2104BN
IC102 OW03-09257-01 IC TC9257F
IC201 OW03-01330-00 IC UPC1330HA IC202 OW03-07312-00 IC AN7312
IC301 OW03-09422-00 IC TC9422F
IC302 OW03-07812-00 IC A NJM7812A IC401 OW03-04282-00 IC A LA4282
IC402 OW03-04558-03 IC BA4558N
LL105 OW81-10001-00CUSHION 10X10X10MM
L101 OW08-01014-02 IFT 1A1014N 10MM
L102 OW08-45635-00 AM ANT COIL MRHNF-45635GG
L105 OW09-45045-00 FM COIL D4.5X4.5T 0.8MM
L106 OW09-02750-05 FM OSC.COIL 2422 549 43772
L107 OW09-70101-00INDUCTOR 10MH
L108 OW09-70101-00INDUCTOR 10MH
L201 OW09-40474-00WCHOKE COIL 47MH D6X8MM
L202 OW09-40474-00WCHOKE COIL 47MH D6X8MM
L203 OW08-07163-00 BIAS OSC COIL 7LIA63N LIK HANG
Q113 OW01-00945-16 TRANSISTOR 2SC945P
Q114 OW01-00945-16 TRANSISTOR 2SC945P
Q115 OW01-00945-16 TRANSISTOR 2SC945P Q117 OW01-00733-16 TRANSISTOR 2SA733P
Q118 OW01-00945-16 TRANSISTOR 2SC945P
Q119 OW01-09018-07 TRANSISTOR 9018G Q121 OW01-00945-16 TRANSISTOR 2SC945P
Q122 OW01-00945-16 TRANSISTOR 2SC945P
Q123 OW01-00945-16 TRANSISTOR 2SC945P Q124 OW01-00945-16 TRANSISTOR 2SC945P
Q201 OW01-08050-04S TRANSISTOR 8050D
Q202 OW01-00945-16 TRANSISTOR 2SC945P Q203 OW01-00945-16 TRANSISTOR 2SC945P
Q204 OW01-00945-16 TRANSISTOR 2SC945P
Q205 OW01-00945-16 TRANSISTOR 2SC945P
Q206 OW01-08050-04S TRANSISTOR 8050D
Q207 OW01-00945-16 TRANSISTOR 2SC945P
Q208 OW01-00945-16 TRANSISTOR 2SC945P
Q209 OW01-00945-16 TRANSISTOR 2SC945P
Q210 OW01-00945-16 TRANSISTOR 2SC945P
Q211 OW01-00733-16 TRANSISTOR 2SA733P
Q212 OW01-00945-16 TRANSISTOR 2SC945P
Q213 OW01-00945-16 TRANSISTOR 2SC945P
Q214 OW01-00945-16 TRANSISTOR 2SC945P
Q215 OW01-00945-16 TRANSISTOR 2SC945P
Q301 OW01-00945-16 TRANSISTOR 2SC945P
Q302 OW01-00945-16 TRANSISTOR 2SC945P Q303 OW01-01383-18 TRANSISTOR 2SC1383R
Q304 OW01-00945-16 TRANSISTOR 2SC945P
Q305 OW01-01240-00 TRANSISTOR A 2SB1240 Q Q401 OW01-08050-04S TRANSISTOR 8050D
Q402 OW01-08050-04S TRANSISTOR 8050D
Q403 OW01-00733-16 TRANSISTOR 2SA733P Q404 OW01-08050-04S TRANSISTOR 8050D
Q405 OW01-08050-04S TRANSISTOR 8050D
Q406 OW01-08050-04S TRANSISTOR 8050D
Q409 OW01-00945-16 TRANSISTOR 2SC945P
R102 OW07-15104-50T CARBON RESISTOR 100K 1/8W 5%
R103 OW07-15104-50T CARBON RESISTOR 100K 1/8W 5%
R121 OW07-15473-50T CARBON RESISTOR 47K 1/8W 5%
R122 OW07-15473-50T CARBON RESISTOR 47K 1/8W 5%
R123 OW07-15202-50T CARBON RESISTOR 2K 1/8W 5%
Item
Parts number Parts name Ar ea Remarks A
