Mitsubishi Electric PUHY-M200YNW-A1 Service Handbook page 323

[8-11 Control Circuit ]
Check for conductivity between TB12 and pin 1 of
CN1 and between TB14 and pin 3 of CN1.
Check the wiring between the noise filter board and
TB1 of power-supply board, and also check
connectors L2-N of TB1, TB12, and TB14. for proper
connections.
Check the voltage across L2 and N of power supply
terminal block TB1.
68
- chapter 8
A
Is there conductivity between them?
YES
Any problems with wiring or
loose connectors?
NO
198-264 VAC
NO
NO
Check TB32 and TB34 on the noise filter for
loose screws.
NO
Any loose
Replace the noise filter
screws?
YES
Tighten loose screws.
YES
Correct wiring problems, and tighten loose connectors.
YES
Replace the power-supply board.
Check the power-supply wiring and the main
power supply, and correct any problems found.
B
Turn the power
supply back on.
BS_08_E