Pioneer PD-M427 Manuale di servizio - Pagina 14
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1
3.2 WAVEFORMS
B
A
Waveforms (Mother Board Assy)
Note: The encircled numbers denote measuring point in the schematic diagram.
2
TP1-Pin 1: PLAY MODE (RF)
500mV/div 500nsec/div
B
2
TP1-Pin 1: TRACK SEARCH MODE
(RF)
500 mV/div 200 µsec/div
C
3
TP1-Pin 6: PLAY MODE (FOER)
100mV/div 10msec/div
D
4
TP1-Pin 2: PLAY MODE (TRER)
200mV/div 1msec/div
E
F
14
1
2
4'
TP1-Pin 2: 50T - JUMP (*1) MODE
(TRER)
200mV/div 1msec/div
– VC
5
IC202-Pin 4: FOCUS-IN (*2) MODE
(FODR)
1V/div 200msec/div
– VC
5
IC202-Pin 4: PLAY MODE (FODR)
1V/div 1msec/div
– VC
6
IC202-Pin 3: PLAY MODE (TRDR)
500mV/div 1msec/div
– VC
PD-M427
2
3
*1 50T-JUMP: After switching to the pause mode, press
the manual search key.
*2 FOCUS-IN: Press the play key without loading a disc.
6'
IC202-Pin 3: 50T - JUMP (*1) MODE
(TRDR)
500mV/div 1msec/div
– VC
7
IC201-Pin 9: PLAY MODE (SPDR)
1V/div 50msec/div
– GND
7
IC201-Pin 9: TRACK SEARCH MODE
(SPDR)
2V/div 50msec/div
– GND
8
IC202-Pin 9: PLAY MODE (CADR)
0.2V/div 2sec/div
– GND
3
4
– GND
– GND
– GND
– GND
4