Hitachi YUTAMPO Series Service Manual page 67

6 Troubleshooting
Outdoor unit
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Disconnection of tab terminal receptor
All receptors used to connect with tab terminal are built with lock mechanism. Please take note that by using a force to
pull out the receptor without releasing the lock, can cause a damage.
Furthermore, during connecting the receptor back make sure to securely insert until end.
Receptor type and procedure to releasing the lock
Vertical (with plastic casing)
Pull out by holding the plastic casing.
Disconnecting on board connector
On board connector with lock mechanism are widely used. Please take note that by using a force to pull out with out
releasing the lock mechanism, can cause a damage.
Furthermore, during inserting back the connector make sure it surely done.
Connector disconnection during discharge is prohibited
Disconnecting connector during discharge is extremely prohibited. Component on board and fan motor will damage.
Proceed trouble shooting process after confirming smoothing capacitor of indoor & outdoor PCB has been discharged.
59 SMGB0135 rev.0 - 06/2020
Lock
mechanism
Release the lock with finger before disconnecting
Horizontal (with a insulation sleeve)
Pull out from top of insulation sleeve while pushing the release
button.
Insulation sleeve
Release button
6