Technics SL-PD665

SL-PD687
MESCHEMATIC DIAGRAM (Parts list on pages 46, 47, 52, 53.)
(This schematic diagram may be modified at any time with development of new technology.)
Note:
sit : Voltage adj. switch in “240V” position.
(For (GC) area only.)
(110V ++ 127V ++ 220V ++ 240V)
© S551 : Disc tray “Open/Close” detector switch.
° S601 : Time mode (TIME MODE) switch.
* $602 : Spiral (SPIRAL) switch.
* S603 : Random mode (RANDOM MODE) switch.
* $604 : Repeat (REPEAT) switch.
$607 : Stop (I) switch.
* $608 : Pause (BM) switch.
*S609 __: Play (+) switch.
*S610~S614: Disc (DISC 1~5) switches.
(S610: 1, S611: 2, S612: 3, S613: 4, S614: 5)
©8615: Disc skip (DISC SKIP) switch.
+ $616 Program mode (PROGRAM MODE) switch.
* $617, 618 : Search (SEARCH) switches.
(S617: 4-4, S618: PP)
* S619, 620 : Skip (SKIP) switches.
(S619: Kd, S620: PPI)
+621 : Loading drawer open/close
(A OPEN/CLOSE) switch.
* $631 : Power “STANDBY /ON”
(POWER, STANDBY ON) switch.
* S651~S662: Numeric (1~10, 0, > 10) switches.
$651: (1), S652: (2), S653: (3), S654: (4),
$655: (5), S656: (6), S657: (7), S658: (8),
$659: (9), S660: (10), S661: (> 10), S662: (0)
° $701 : Rest detector.
¢ Terminal guide of IC’s, transistors and diodes.
*The voltage value and waveforms are the reference
voltage of this unit measured by DC electronic voltmeter
(high Impedance) and oscilloscope on the basis of
chassis.
Accordingly, there may arise some error in voltage
values and waveforms depending upon the internal
impedance of the tester or the measuring unit.
* The parenthesized are the values of voltage generated
during playing (Test disc 1kHz, L+R, OdB), others are
voltage values in stop mode.
Important safety notice:
Components identified by A mark have special
characteristics important for safety. Furthermore,
special parts which have purposes of fire-retardant
(resistors), high-quality sound (capacitors), low-noise
(resistors), etc. are used as occation calls. When
replacing any of components, be sure to use only
manufacturer's specified parts shown in the parts list.
*The supply part number is described alone in the
replacement parts.
Part No. | Production Part No. | Supply Part No.
Ic11 [_LM2940T5M LM2940T5
°
a
/
mae:
Positive
voltage
lines
and
negative
voltage
lines.
C===>
:
audio
signal
lines.
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.
es
BA4S558FHTT1 ‘AN8802SCE1V ‘AN389SE1 MN66271RA. UPD78044A058 BAG247N
24
°
io
:
1
2
LM2940TSM 2SA1309A1QST 28D2037EFTA 28B1238QSTV6 PT381TB
28C3311A1QST 28D1862QRTV6
2SD1450RSTTA
UN4112AITA
'
UNA114TA
Commods
7 UN4212AITA, 8< ~ anode
1.
Vin
ci
UN4214AITA.
e
ca——a
Sd . UN4215TA
jout
2SB709sTW MA4051MTA MA4100MTA RLIN4003NO2 MAI65TA
CO, Catnode MA4O62MTA MA4270MTA
5
a
MA4068HTA,
ca
Ca
ca
c a MA4091MTA. 4 Cathode Cathode c 4 Cathode
Le) MAOS6MTA Z " 4
8
e€ Anode
Anode * ‘Anode Anode
GL380TB
RCDHC-278N
RSQGP1S53V
SG-2068
LNO18304P
18S291TA
c
ZE.
<SS>
>
cathode
Anode Z
‘atnode
ag
alec
alec
fete
Carne
A
a ‘Co Ca
A—@—ca N Co c Ca 4 —@— co
3 c =
2 nose 2. OAKCE Anode