User manual

Appendix C

IEM

IEM User Manual

IEM offers relay bypass/mute jumpers options. This feature is ideal for situations where power to unit is suddenly

removed. The unit ships with the relay jumpers off (which will mute the signal if power is cut). The procedure for chang-

ing these jumpers is as follows:

1) First, shut the unit off and disconnect the power cable.

2) Ground yourself prior to opening the IEM chassis to prevent ESD damage.

3) Open the chassis by removing two screws on each side of the chassis and the top two center Allen-head screws as

shown:

4) Locate the jumper blocks shown in the illustration below:

4) Remove (or replace) the two pair of jumpers from the headers, depending on the desired option.

5) Close the chassis and replace the screws in the reverse order.

Fig.C.1

QUANTUM II JACK BOARD

COMPONENT SIDE

80-6379-P1

JUMPERS IN-RELAY BYPASS

JUMPERS OUT-RELAY MUTE

WA1

WA2

WA3

WA4

D112

H10

Input Jumpers (when in place relay bypass is activated)

Output Jumpers (when in place relay bypass is activated)

CAUTION: These servicing instructions are for use by qualified service

personnel only. To reduce the risk of electric shock, do not perform any

servicing other than that contained in the operating instructions unless you

are qualified to do so. Refer all servicing to qualified service personnel.

Disconnect mains power before servicing.

Relay Mute/Bypass Jumpers