MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2-2-1(P*)
2-2-1 (P*)
Problem is in IC204 or IC201 or IC205 or
IC500 or IC400 (and peripheral circuits).
Are the specified voltages available at the
connectors below?
CN
Pin No. Voltage
Name
A5V
J190
A3.3V
J190
D2.5V
J190
D1.9V
L400
AD3.3V
J190
YES
IC204 or IC201 orIC205 or IC500 or IC400 (and
peripheral circuits) are out of order.(PWB-MAIN)
NO
When the shown voltage is in
problem, PWB including the power
supply circuit(and peripheral
circuits) is the following.
Voltage with
1
5Vdc
5
3.3Vdc
8
2.5Vdc
-
1.9Vdc
6
3.3Vdc
PWB including
problem
the circuit in
problem
A5V
SET(SUB)
A3.3V
SET(SUB)
D2.5V
SET(SUB)
D1.9V
MAIN
AD3.3V
SET(SUB)