Toshiba e-STUDIO2500c Service Manual page 141

[ 3 ] Exposure lamp control circuit
SLG board
LMPON-0
LMPON-0
WDTOUT-0
Scanner
CPU
5VSWON-0
Signal
LMPON-0 Exposure lamp ON signal
WDTOUT-0 Wachdog timer signal
5VSOW-0 +5VSW ON signal
LMPEN-0 Exposure lamp enable signal
LAMPON-0 WDTOUT-0
L H
H H
--- L
--- H
--- ---
May 2006 © TOSHIBA TEC
Function
5VSOW-0 LMPEN-0
L L
L L
--- ---
H ---
--- H
6 - 11
+5VSW
Q1
LMPON-0A
Q8
PG
Exposure
+5VSW Q8
lamp
ON ON ON
ON OFF
OFF OFF
OFF
OFF OFF
--- OFF
e-STUDIO2500c/3500c/3510c SCANNER
Exposure lamp
Lighting device for
exposure lamp
(Lamp inverter board)
State of equipment
Normal operation
Scanner CPU
overdriving
Call for service
Abnormality
detected
(Check sum error)
6