Yamaha UMAX Service Manual page 17

Checking the connections
Check the leads, couplers, and connectors for
stains, rust, moisture, etc.
1. Disconnect:
• Lead
• Coupler
• Connector
NOTICE
• When disconnecting a coupler, release the
coupler lock, hold both sections of the cou-
pler securely, and then disconnect the cou-
pler.
• There are many types of coupler locks;
therefore, be sure to check the type of cou-
pler lock before disconnecting the coupler.
NOTICE
When disconnecting a connector, do not pull
the leads. Hold both sections of the connec-
tor securely, and then disconnect the con-
nector.
BASIC SERVICE INFORMATION
2. Check:
• Lead
• Coupler
• Connector
Moisture → Dry with an air blower.
Rust/stains → Connect and disconnect sev-
eral times.
3. Connect:
• Lead
• Coupler
• Connector
TIP
• When connecting a coupler or connector, push
both sections of the coupler or connector to-
gether until they are connected securely.
• Make sure all connections are tight.
Make sure all connections are tight.
4. Check:
• Continuity
(with the digital circuit tester)
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