Hitachi VTMX900ECT Wartungshandbuch Seite 99

Oscillograms Central Control (AIO1)
OSD 24
A: DC, 2 V/Div, 5ms/Div
IC 7502 PIN9 OFP
PLAY 42
A: DC, 2 V/Div, 5ms/Div
T 7461 COLLECTOR TAE
REC 46
A: DC, 2 V/Div, 10ms/Div
TP 9802 SYNC
REC 56
A: DC, 1 V/Div, 20us/Div
IC7899-B PIN34 CAP_DIG
PLAY
0V
A: DC, 5 V/Div, 5ms/Div
T 7804 COLLECTOR LED
LOAD
0V
A: DC, 2 V/Div, 20us/Div
IC 7899-B PIN33 THIO
REC
0V
A: DC, 500mV/Div, 10ms/Div
TP9803 HP1
MUTE
0V
A: DC, 1 V/Div, 20ms/Div
IC 7004-B PIN10 CROT/MTA
40 PLAY
0V
A: DC, 2 V/Div, 5ms/Div
T 7462 COLLECTOR TAS
43 REC
0V
A: DC, 1 V/Div, 20us/Div
T 7809 COLLECTOR CSYNC
47 REC
0V
A: DC, 2 V/Div, 10us/Div
IC 7899-B PIN35 DRUM_DIG
71 REC
0V
A: DC, 1 V/Div, 20ms/Div
IC 7004-B PIN10 CROT/MTA
41
0V
45
0V
49
0V
71
0V
3-17