Technics SL-P999 Service Manual

SL-P999
Mi SCHEMATIC DIAGRAM
(Parts list on pages 54~58.)
(This schematic diagram may be modified at any time with
development of new technology.)
Notes:
eS1 : Power switch in “on” position.
°S$2 : Voltage selector switch.
(For [EK], [XA], [XB], [PA], [PE] and [PC] only.)
© $101 : Disc holder open/close detection switch.
© $102 : Disc holder open/close detection switch.
¢ $601 : Edit tape length (edit tape length) switch.
¢ $602 : Random play (random) switch.
¢ $603 : Auto cue/auto space (auto cue/edit auto space)
switch.
¢ $604 : Digital output (digital output) switch.
¢ S606 : Programmed-play (program) switch.
¢ S609 : Window search (window) switch.
¢ $610 : Disc link (disc link) switch.
$611 : Repeat (repeat) switch.
° $613 : Display mode select (display mode) switch.
° $614 : Recall (recall) switch.
© $617 : Tape-side select (side A/B) switch.
° $619 : A-B repeat (A-B repeat) switch.
¢ $620 : Peak level search (peak search) switch.
¢ $621 : Time mode select (time mode) switch.
¢ $622 : Clear (clear) switch.
e $625~630, :
633~638, (S625: 1, S626: 5, S627: 9, S628: 13,
641~645, | S629: 17, S630: 0, S633: 2, S634: 6,
649~653 $635: 10, S636: 14, S637: 18, S638: +10,
$641: 3, S642: 7, S643: 11, S644: 15,
$645: 19, S649: 4, S650: 8, S651: 12,
$652: 16, S653: 20
© $632 : Disc holder open/close (& open/close) switch.
¢ $640 : Stop (MM stop) switch.
¢ S646, 654 : Index skip (~-index/index—) switch.
$646: — (F), S654: ——(R)
¢ $648 : Pause (§—f pause) switch.
¢ $647,655 : Skip (Kd skip/skip D1) switch.
S647: PPI (F), S655: Kd (R)
© $656 : Play (p> play) switch.
° $657 : Timer start (timer) switch.
¢ 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, 0dB), others are voltage values
in stop mode.
e Important safety notice:
Components identified by A mark have special characteristics
important for safety. When replacing any of these
components, use only manufacturer’s specified parts.
e-< > /--< >---: Positive voltage lines and negative
voltage lines.
8 : Audio signal lines.
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
e 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.
E
e Remote control transmitter ic
4 5
SL-P999 SL-P999
MN6030G
D10,
D11
MICROCOMPUTER
ma
Rec Reet
Ky2
CRE
23 a SCG
Be Ge RE UCC OF
BS IGS SGD
ae
Key input control circuit
Timing generation circuit
MA151WK
¢ Key number description and data code
c3
4vi00
+
3v
BATTERY
taal
Chattering
simultaneous
push inhibit
11-bit latch
shift resistor
Pulse generation
circuit
Modulation
Qi
UN7231
LED DRIVE
Custom code Data code Inverse custom code
Head pulse (5 bit) (6 bit) (Sbit) Inverse data code (6 bit)
——
——————
————
eee
001 10000000 1 1001 1d | 1 |
ai \ [3 [skip pr | oocort |
ae | [4 oearen << | o00r00
| cr | | [5 [search|
| [oar i [6 [pause | 000
| | [7 [repeat | _ooorrt _|
| oats | [8 [ABrepect | 001000 _|
| rs | [8 [rece | oot001
: | [10 [play | oor010_|
|
cs
|
[1
[etear
|
001081
a | [12 [index skip [001100 |
| [13 [index skip |_oorror _ |
| fas oe
! ee aaa RC
| zr se a
| a oe
a os
Ee
Ee
ee
ee
CC Oe
eee
ae
| 27
| coor | 28 | program
| ooorto fat
[eS 2)
| at [ti
| a7 {ai
ee
i AO
| 80
| st [33
| 82
| 83
| ovo | 4
| 8817
| 86
| 87 [19
| 58
pew GO)
el
display ON/OFF
(A-B) peak search
Custom code: 01100
EY oreration CIRCUIT
FL6O0! (SADISMTO8GK)
FL DISPLAY
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ane
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SYSTEM CONTROL
zoek Gg -- OV
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v
1Oms. 2V/DIV. ems eMiONV BIEL DRIVE:
Play dt ogy f
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Sms.2V/D1Vv.
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Sms.2v/Div. & <a < a « P4
b & b 5 & 6
= No mo TO no OO
= o= aR o= foam o- KR o=
ge gS Sef ist” iBs 33
$603
$601
(AUTO CUE $604
EO veri $602 ZEDIT AUTO | (DIGITAL
ce ) | (RANDOM ) SPACE) OUTPUT)
4 4 ‘tllatis
$609 5610 S61 ae
(WINDOW) — (DIS LINK) |( REPEAT) MODE
——L a pees! rite er Cy
eo ? [ Se 5 $0 fo Oo ie
$617 $619 S620 $621
SIDE A/B) (AB REPEAT) PeSeARcH TIME MODE
(So e. 5-6 oO
$625 $626 S627 $628 $629
(1) 15) 3) (17)
paren Sly ean (aay aa
eo i eo t on oO e)
$633 $634 $635 $637
(2) (6) 10) (18)
aS Sere prea Ney —_
0 ae 6 $O 6 oO
$641 $642 $643 $644 $645
(3) (7) an U5) (19)
peas CY peat EE a Boer
Co) 2 eo Z $09 5 0
$649 $650 $651 $652 $653
(4) (8) (2) (16) (20)
de atl prene Gr

Technics SL-P999 Specifications

General

Brand	Technics
Model	SL-P999
Category	CD Player
Language	English