Hitachi VTMX900ECT Wartungshandbuch Seite 90

3-8
Oscillograms Block Diagram Central Control
PLAY 40
0V
A: DC, 5 V/Div, 5ms/Div
T 7804 COLLECTOR LED
REC 45
0V
A: DC, 1 V/Div, 20us/Div
T 7809 COLLECTOR CSYNC
REC 51
0V
A: AC, 5 V/Div, 2ms/Div
CON 1948 PIN 1-3
REC 55
0V
A: DC, 1 V/Div, 200ms/Div
T 7464 COLLECTOR WTR
REC 59
0V
A: DC, 1 V/Div, 500ms/Div
T 7465 COLLECTOR WTL
PLAY 41
0V
A: DC, 2 V/Div, 5ms/Div
T 7462 COLLECTOR TAS
REC 46
0V
A: DC, 2 V/Div, 10ms/Div
TP 9802 SYNC
REC 52
0V
A: DC, 200mV/Div, 10ms/Div
CON 1948 PIN 5 PG
REC 56
0V
A: DC, 1 V/Div, 20us/Div
IC7899-B PIN34 CAP_DIG
REC 60
0V
A: DC, 2 V/Div, 20ms/Div
IC 7463 PIN3 CTL1
PLAY 42
0V
A: DC, 2 V/Div, 5ms/Div
T 7461 COLLECTOR TAE
REC 49
0V
A: DC, 2 V/Div, 10us/Div
IC 7899-B PIN35 DRUM_DIG
REC 53
0V
A: DC, 2 V/Div, 1ms/Div
IC 7463 PIN6 PG/FG
REC 57
0V
A: DC, 1 V/Div, 20us/Div
CON 1946 PIN6 CAP
REC 77
0V
A: DC, 1 V/Div, 20us/Div
IC 7072 PIN27 CSYNC
LOAD 44
0V
A: DC, 2 V/Div, 20us/Div
IC 7463 PIN25 THIO
REC 50
0V
A: DC, 1 V/Div, 200us/Div
IC 7463 PIN11 DRUM
LOAD 54
0V
A: DC, 2 V/Div, 20ms/Div
T 7466 COLLECTOR FTA
REC 58
0V
A: AC, 500mV/Div, 500us/Div
CON 1946 PIN 4 FG