Toshiba 13A21 Service Manual page 41

DMD
MCU (IC404) read the DMD
board
board IC9007 temperature via
thermal
I2C bus.
sensor
Key board MCU (IC404) read the Key
thermal board IC901 temperature via
sensor I2C bus.
IC2004 connect to micro switch
Micro
and supply the VCC to power
switch for
IC, if micro switch is open the
lamp door
VCC of power IC is off thus
open
the main power supply cans not
detection
work.
F1001 serial with AC input
Power
line, if AC input current over
supply AC
fuse rating (5A 250V), the fuse
line fuse
will open immediately.
Normal
<=73 degree C
Condition
Abnormal
>73 degree C
condition
Normal
<=50 degree C
Condition
Abnormal
>50 degree C
condition
Door close,
Normal
micro switch is
Condition
on
Door open,
Abnormal
micro switch is
condition
off.
Normal AC input current
Condition <5A
Abnormal AC input current
condition >5A
41
MCU power off the main power
supply.(MCU
pinT26(POWERON)-->CN201
pin13-->Power Board CN202
pin1-->Q2005(buffer)-->Q2004/IC2
004(photo
coupler)-->Q1006/Q1005(VCC
control for Power ICs
IC1001/IC1002/IC1005))
MCU power off the main power
supply.
Power IC no VCC, Power supply
shutdown immediately.(Micro
SW.-->IC2004(photo
coupler)-->Q1006/Q1005(VCC
control for Power ICs
IC1001/IC1002/IC1005)
Fuse open, no power.
Remote off/on to
re-start up
Remote off/on to
re-start up
Remote off/on to
re-start up
AC off-->replace
FUSE-->AC
on-->remote on