3 Schematic Diagram Notes
3.1. Schematic Diagram Notes
The supply part number is described alone in the replace-
ment parts.
: +B lines.
: CD playback signal lines.
The voltage value and waveforms are the reference voltage
of this measured by DC electronic voltmeter (high impedance)
and oscilloscope on the basis of GND terminal (DC IN Jack).
Accordingly, there may arise some errors in the voltage val-
ues and waveforms depending upon the internal impedance
of the tester or measuring unit.
Measurement conditions:
*
AC adaptor is used for power supply.
*
Set the headphones VR(VR701) to center position(No.5).
*
Set the hold lock and ANTI-SHOCK switches to ON.
*
The parenthesized is the voltage for test disc (1 kHz, L+R,
0 dB) in play mode, and the other, for no disc in stop mode.
Caution!!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the pins of IC or LSI with fingers directly.
S201 : Laser ON/OFF switch in “OFF” position.
(It turns “ON” with disc holder closed.)
S202: Rest detector in “OFF” position.
(It turns “ON” when optical pickup comes to
innermost periphery.)
S309 : Play mode selector (MODE) in “NORMAL” position.
(RANDOM
⇔
NORMAL
⇔
RESUME)
S310 : Hold (HOLD) switch in “OFF” position.
S801 : Play/pause (
/
) switch.
S802 : Stop/power off (
/ POWER OFF) switch.
S803,: Skip/search (
/
,
/
) switches.
S804 [S803 :
/
, S804 :
/
]
S805 : Repeat (REPEAT) switch.
S806 : Memory/recall (MEMORY/RECALL) switch.
S807 : EQ selector (EQ)switch.
S808 : Anti-shock (A.SHOCK) switch.
S809 : Battery check (BATT CHECK) switch.
VR11 : Power supply voltage adjustment.
VR701-1, 2 : Headphones volume (VOLUME) control.
Important safety notice:
Components identified by
mark have special character-
istics important for safety.
Furthermore, special parts which have purposes of fire-re-
tardant (resistors), high-quality sound (capacitors), low-
noise (resistors), etc. are used. When replacing any of com-
ponents, be sure to use only manufacture’s specified parts
shown in the parts list.
Notes:
3.2. Type Illustration of IC´s, Transistors and Diodes
NJU7082BVTE1
AN8839NSBE1
RS10002E2
BH6522FVE2
BA6966FVE2
8PIN
28PIN
40PIN
40PIN
20PIN
MNA4400T10T
MA741WKTX
MSB709RST1
2SB1218ATX
2SD1328TX
2SD1819ATX
MA143TX
XN1210TX
XN1215TX
MA142WKTX
MA111TX
SC440323CFU
MN662782RPT1
64PIN
80PIN
2SB1182TLPQR
MA1070400L
DTA114YUA106
DTC114EUA106
DTC144TUA106
UN5213TX
No.1
No.1
C
B
E
E
C
B
C
B
C
E
B
C
B
C
E
A
Ca
A
Ca
A
A
Ca
A
Ca
A
A
Ca
A
Ca
Ca
A
Anode
Cathode
Anode
Cathode
Anode
Anode
Cathode
Anode
A
Ca
A
Ca
Anode
Cathode
Anode
Cathode
Ca
A
Anode
Cathode
1
5
2 4
1 3
2 0
1 7
1 2
8
3
SL-SX510
