Toshiba e-studio550 Service Manual page 93

6. 4. 3. Control circuit for exposure lamp
EXPON–0
P24
WDTOUT–0
WDTOUT
HCT00
WDTEN–0
IC16
P23
Scanner
CPU
IC9
Working conditions
WDTOUT-0 WDTEN-0
H H
H H
L X
H L
JUNE 2002 © TOSHIBA TEC
+5V
HCT00
IC16
HCT00
IC16
HC14
IC17
EXPON-0
(Lamp drive signal)
H
L
X
X
+5VSW
Q3:RN2401
D1:1SS184
Q2:RN1401
PWA–F–SLG–340
+5VSW Q2 Xenon lamp
ON OFF
ON ON
OFF OFF
OFF OFF
6 - 9 e-STUDIO550/650/810 SCANNING SECTION
Xenon lamp
Xenon lamp
EXPON–0A
lighting device
SG
State of copier
OFF
Normal operation
ON
Scanner CPU
OFF
overdriving
OFF Call for Service