Toshiba e-STUDIO350 - Control Circuit for the Exposure Lamp

e-STUDIO350/450 SCANNER 6 - 10 November 2003 © TOSHIBA TEC
6
LMPON
5VSW ON
WDTOUT
Xenon lamp
L
L
H
ON
-
H
-
-
-
L
-
-
-
LAMP-EXPO-360
IC4
IC6IC21
IC34
IC9
+5VSW
+5V
+5V
Q4
D3
Q6
+24V
LOW
HIGH
LMPON
5VSWON
WDTOUT
Scanner CPU
INV-EXPO-360
Xenon lamp
6.4.3 Control circuit for the exposure lamp
SLG board
Working conditions
Exposure lamp ON signal
5V SW ON signal
Watchdog timer signal
Lamp turns ON at “L”
Controls 5VSW by CPU. Normally “L”
“L” is output when CPU is out of control
OFF
Fig. 6-404