Universal Audio 4-710d Operations Instructions download pdf (Page 34)

Maintenance

Calibration

The 4-710d is internally calibrated at the factory. Calibration should never be required and no user

adjustments are available.

Fuse

There is no user accessible fuse for the 4-710d. It contains an internal power supply circuit board with

its own fuse.

Voltage Select

The 4-710d contains a universal auto-sensing, filtered, multi-stage regulated power supply which

supports 100-240VAC and 50-60Hz power for trouble-free operation worldwide. No switch setting is

required when changing from 115 to 230 volt use or vice versa.

Service

If your 4-710d should ever require service, please see “Service & Support” on page 43.

AES/EBU DB-25 Connector Pinouts

The table below details the signals present on the DB-25 connector pins for the AES-EBU outputs.

CHANNEL DESIGNATION

HOT (+)

COLD (–)

GROUND (shield)

Channels 1–2 Receive*

Channels 3–4 Receive*

Channels 5–6 Receive*

Channels 7–8 Receive*

Channels 1–2 Transmit

Channels 3–4 Transmit

Channels 5–6 Transmit

Channels 7–8 Transmit

* Since the 4-710d does not perform D/A conversion, the receive pins for channels 1–8 are inactive.

 The 4-710d contains no user-serviceable parts. Repair should be performed only by

qualified service personnel. Contact Universal Audio for service information.

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Universal Audio 4-710d Operations Instructions Page 34