Mitsubishi Electric LT-2220 Service Manual page 46

MODELS: LT-2220 / LT-2240 / LT-3020 / LT-3040 / LT-3050
2-3-1 (P*)
2-3-1 (P*)
Problem is in IC2J1 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
IC2J1 or IC201 or IC205 or IC500 or IC400(and
peripheral circuits) are out of order. (PWB-MAIN)
(f=48KHz)
NO
1 5Vdc
5 3.3Vdc
8 2.5Vdc
- 1.9Vdc
6 3.3Vdc
When the shown voltage is in
problem, PWB including the power
supply circuit(and peripheral
circuits) is the following.
Voltage with 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)