Toshiba E-STUDIO520 - Control Circuit for Exposure Lamp

e-STUDIO520/600/720/850 SCANNING SECTION March 2005 © TOSHIBA TEC
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6.4.3 Control circuit for exposure lamp
Fig.6-8
Working conditions
LMPON-0
(Lamp drive signal)
WDTOUT-0 5VSWON-0 +5VSW Q102 Xenon lamp
State of
equipment
L H L ON ON ON
Normal operation
H H L ON OFF OFF
X L X OFF OFF OFF Scanner CPU
overdriving
X H H OFF OFF OFF Call for Service
DG
+5VSW
Xenon lamp
Lighting device for
xenon lamp
(Lamp inverter board)
LMPON-0
WDTOUT-0
EXPON-0
5VSWON-0
SLG board
Q102
Q103
D103
IC5
IC6
IC6
IC8
IC10
Scanner
CPU