ABH-4 - Harman Kardon Audio User Guide / Operation Manual. Page 10

ENGLISH

Troubleshooting Guide

If the remote A-BUS modules do not operate at all:

• Verify all connections between the remote modules and the ABH 4

• Check the RJ-45 connection between the ABH 4 and the host receiver 

(A-BUS/

systems)

• Check the AC power connection at both the ABH 4’s Power jack and on 

the Power Supply

If the remote module’s status LED is lit but there is no sound:

• Make certain that an active source has been selected on the host receiver 

• Check the RJ-45 connection between the ABH 4 and the host receiver 

(A-BUS/

systems)

• Check the audio connections between the ABH 4 and the host receiver 

(non-A-BUS/

systems)

For additional troubleshooting information and updated operational and installation
hints, please visit the Product Support section of the Harman Kardon Web site at
www.harmankardon.com.

Specifications

ABH 4 Dimensions (D x W x H):

83mm x 184mm x 30mm (3-5/16" x 7-3/16" x 1-3/16")

Weight: 410g (0.9 lb)

Power Supply Dimensions (D x W x H):

70mm x 151mm x 36mm (2-13/16" x 5-15/16" x 1-7/16")

Weight: 450g (1 lb)

Power Supply Input: 108 – 264 VAC, 115 watts

Power Supply Output: 24-volt, 4-amp supply included

Status Power: 12 volts, 200ma

Wiring protocol for A-BUS connections: TIA wiring specification for TIA 568A