CLEAR KB-702GM User Manual

K B - 7 0 2 / K B - 7 0 2 G M T W O - C H A N N E L S P E A K E R S T A T I O N S

3 - 1

MAINTENANCE

This chapter provides maintenance information including block diagrams and tips for solving problems.

Caution: These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical shock, do not

perform any servicing other than that contained in the operating instructions unless you are qualified to do so.

BLOCK DIAGRAM FOR THE KB-702

Figure 3-7: KB-702 Block Diagram

EQ/
LIM

Headset

Mic

Talk

Sidetone

Null

Call

Light

Call

Intercom

Volume

Speaker

On/Off

TW Option

Channel

Switch

Ch. A

Speaker

Power

Ch. B

Call Send &

Receive

RMK

Microprocessor

Talk

Headset

Output

Balanced

Program

Input

Speaker

Dip

Program

Mute

Mic

Mute

Common

+30 VDC

Ground

Latch

Disable

Long Line

Program

Level

Call Alert

Tone Level

4-Wire

Input

4-Wire

Output

2-Wire / 4-Wire

Select

Rectifier

16 VAC

Power

Ch. B

Ch. A

4-Wire
Option

Single

Chan.