Technics SL-PD647

SL-PD647 |
i SCHEMATIC DIAGRAM (Parts list on pages 46, 47, 53.)
(This schematic diagram may be modified at any time with development of new technology.)
Note:
¢ $551 : Up/down det. switch.
© $552 : Open det. switch.
¢ $601 : Time mode (TIME MODE) select switch.
° $602 : Spiral (SPIRAL) switch.
¢ $603 : Random (RANDOM) switch.
° $604 : Repeat (REPEAT) switch.
¢ $608, 609 : Search (SEARCH) switches.
(S608: <q, S609: >)
¢ $610~614: Disc (DISC 1~5) switches.
(S610: 1, S611: 2, S612: 3, S613: 4, S614: 5)
e $615 : Program mode (PROGRAM MODE) switch.
¢ $616, 617 : Skip (SKIP) switches.
(S616: <q, S617: DPI)
¢ $618 : Disc skip (DISC SKIP) switch.
e $619 : Loading drawer open/close (A OPEN/
CLOSE) switch.
¢ $620 : Stop (I STOP) switch.
¢ $621 : Pause (BI PAUSE) switch.
° $622 : Play (B PLAY) switch.
¢ $624 : Power (POWER) switch.
¢ $701 : Voltage adj. switch in “240V” position.
(110V @ 127V < 220V — 240V)
(For (GC) area only.)
¢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.
¢ Terminal guide of IC’s, transistors and diodes
AN8802SCE1V
BA4558FT1
BA6247N
28C3311QRSTA MA165TA
DTC143ESTP
MA4091MTA
MA4100MTA
RPR-363A
CO cathode MA4270MTA
. S MA4082MTA
A MA4062MTA
cont
M4051MTA
Ca Cc Anode
Osh;
AN8389SE1
2SA1309QRSTA
2SD1450RSTTA
UN4112TA &
UN4212TA Ua Gaited
UN4215TA
;
ae
Ee
e 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. :
Production Part No. Supply Part No.
1011 LM2940T5M LM2940T5
10451, 801 | BA4558FT1 SVIBA4558F
(mums {meee Positive voltage lines and
negative voltage lines.
: 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.
e Put a conductive mat on the work table.
¢ Do not touch the pins of IC or LSI with fingers directly.
MN66271 (Type A) UPD78043B014
MN662712RA (Type B)
2SA1547QTV2
2SB1238QSTV6
RL1N4003N02
| SLPD647 _SL-PD647 | :
2 3 4 5 6
CIRCUIT
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2SAI547QTV2
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