Sanyo VCC-9400P Service Manual page 14

4-5. A BASE UNIT AND A MAIN UNIT ARE EX-
CHANGED AND CHECKED
It works after a power supply is surely turned off when it is
connected with the extension cable (VHJ-0154).
A circuit board is sometimes damaged when it works in
power supply on.
The check of
a fault
Base unit
exchange
NO
Normality
YES
The problem of
the base unit
YES
Normality
SY-1 circuit
NO
board defect
Switching power
supply exchange
YES
Normality
Switching
NO
power supply
defect
A cable is
checked
MAIN unit
exchange
YES
Normality
NO
The problem of
the base unit
main unit
NO
Power supply
board defect
YES
MAIN board
defect
NO
A harness is
checked
The problem of
the MAIN unit
The voltage
check of a power
supply board
TP301: +18 V
TP303: +18 V
TP305: +9 V
TP306: +5 V
TP307: +5 V
Voltage
normality
YES
MAIN board
exchange
Normality
NO
Contents of a
NO
problem are
camera
YES
Camera unit
exchange
Other parts defect
Normality
YES
Camera unit
defect
– 14 –
Motor exchange
YES
Normality
Motor defect
NO
YES
Initializa-
tion fault
The gap check
of Sensor IC
NO
and a magnet