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5. SCHEMATIC DIAGRAM
5.1 Waveforms
*1 SOT- JUMP:After switching to the pause mode, press the
Note: The encircled numbers
denote measuring points in the
schematic diagram.
TP1- Pin 1:PLAY MODE
(2) (RF)
500mVidiv
SO0Onsec/div
TP1- Pin 1: TRACK SEARCH MODE
(RF)
500mV/div
200 yu sec/div
2.600028 88)
TP1- Pin 6:PLAY MODE
(3) (FOER)
100mV/div
1Omsec/div
TP1-Pin 2:PLAY MODE
(TRER)
WVidiv
10msec/div
TP1- Pin 2:50T- JUMP
(*1) MODE
(TRER)
1Vidiv
1msec/div
manual search key.
*2 FOCUS - IN:Press the key without loading a disc.
IC202- Pin 3 :FOCUS - IN (*2) MODE
(FODR)
1Vidiv
200msec/div
IC202- Pin 3 :PLAY MODE
(FODR)
1Vidiv
1msec/div
IC202- Pin 4:PLAY MODE
6) (TRDR)
500mVidiv
1msec/div
1C202- Pin 4:50T
- JUMP (*1) MODE
(TRDR)
500mVidiv
1msec/div
IC201- Pin 9:PLAY MODE
7) (SPDR)
1Vidiv
50Omsec/div
IC201 - Pin 8: TRACK SEARCH MODE
(SPDR)
2Vidiv
50msec/div
IC202- Ping :PLAY MODE
(CADR)
0.5Vidiv
2sec/div
1C202- Ping
: TRACK SEARCH
MODE
(CADR)
2V/div 200msec/div
1C151-Pin 32:PLAY MODE
(EFM)
2Vidiv
500nsec/div
1C401-Pin 7 :PLAY MODE (1kHz)
(LO ) (D/A DATA OUT)
1V/div
200 psec/div
1C401-Pin 8 :PLAY MODE (1kHz)
(1) (LO ) (D/A DATA OUT)
div
200
i
1V
sec/div
1C301-Pin 22 :PLAY MODE (1kHz)
(BCLK)
2V/div
500nsec/div
(aa al ol eel cael a coe el oo
ey
1C301-Pin 20 :PLAY MODE (1kHz)
(LRCK)
2Vidiv
10 usec/div
1C301-Pin 21 :-PLAY MODE (1kHz)
(PCMD)
2V/idiv
5O0Onsec/div
Pin- OUTPUT:PLAY MODE(1kHz)
1Vidiv
200 usec/div
STRACK SEARCH MODE
Upper: TP1- Pin 1 (RF) 1V/div
Lower: IC 151- Pin 29 (MIRR)
2Vidiv
200 usec/div
eee
tee
eee
t
:PLAY MODE
Upper: TP1- Pin 1 (RF) 1V/div
Lower: 1C151- Pin 30 (DFCT)
SVidiv
200 usec/div
1C301-Pin 3 :PLAY MODE
3) (MDP)
2Vidiv
2 usec/div
(Upper)
— GND
~— GND
(Lower)
!1C301-Pin 9 ;:PLAY MODE
(PCO)
2Vidiv
10 usec/div
NOTE FOR SCHEMATIC DIAGRAMS
(Type 4A)
1. When ordering service parts, be sure to refer to
"PARTS
LIST
of EXPLODED
VIEWS"
or "PCB
PARTS LIST".
. Since these are basic circuits, some
parts of them or the
values of some
components
may be changed for improve-
ment.
. RESISTORS:
Unit: k:kQ, M:MQ, or 9 unless otherwise noted.
Rated
power:
1/4W,
1/6W,
1/8W,
1/10W
unless
otherwise
noted.
Tolerance: (F): +1%, (G): +2%, (K): +10%, (M): +20% or +5% un-
less otherwise noted.
. CAPACITORS:
Unit: p:pF or wF unless otherwise noted.
Ratings: capacitor (uF)/ voltage (V) unless otherwise noted.
Rated voltage: 50V except for electrolytic capacitors.
. COILS:
Unit: m:mH or wH unless otherwise noted.
. VOLTAGE AND CURRENT:
LoJor-v:
DC voitage (V) in PLAY mode unless otherwise noted.
©
mA
or+
mA:
DC current in PLAY mode unless otherwise noted.
Value in(
) is DC current in STOP mode.
OTHERS:
© @or®@ : Adjusting point.
©
<<]: Measurement point.
© The A mark found on some component parts indicates the im-
portance of the safety factor of the parts. Therefore, when re-
placing, be sure to use parts of identical designation.
- SCH—O ON THE SCHEMATIC DIAGRAM:
e SCH—D indicates the drawing number of the schematic dia-
gram. (SCH stands for schematic diagram.)
- SWITCHES (Underline indicates switch position):
FUNCTION
BOARD ASSY
S701:
EJECT
S702
: REPEAT
S703.
: PROGRAM
S704:
DISC
S705:
kKKI- <j
S706:
b> - Dot
S707
: STOP
s7os
: >/(0
S709
: RANDOM
S710
: HI-LITE SCAN
SWITCH
BOARD
ASSY
S80t
: POWER
PD-M423, PD-M403
13
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