Pioneer PD-M423 Servicehandleiding - Pagina 9

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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

sec/div

1C301-Pin 22 :PLAY MODE (1kHz)

(BCLK)

2V/div

500nsec/div

(aa al ol eel cael a coe el oo

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

: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.

or+

mA:

DC current in PLAY mode unless otherwise noted.

Value in(

) is DC current in STOP mode.

OTHERS:

<<]: Measurement point.

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