Pub.: 42004-383D
M
ODEL
DHS/DHF
S
ERIES
D
IGITAL
I
NTERCOM
S
TATIONS
Page 21 of 24
f:\standard ioms - current release\42004 instr. manuals\42004-383d.doc
11/10
Maintenance
WARNING
Always remove power to this station prior to servicing.
General Information
1.
Inspect and replace frayed or cracked wiring.
2.
Secure/replace loose wires, ferrules, and terminal lugs.
3.
Remove corrosion from terminals.
4.
Inspect fuses
F2, F5, and F6
of the Audio Interface PCBA.
Troubleshooting
Problem Possible
Solution
Low volume
(unit speaker, handset
receiver, or headset
receiver)
1.
Increase the volume settings via potentiometer R75 (UNIT SPKR), R73
(HNDST VOL).
2.
Increase the Master Volume setting via the front panel keypad and press
Enter.
3.
Increase the Intercom Level Setting of the 69547-001 Intercom Assembly
by rotating the potentiometer RM counterclockwise.
Caution!
This will
affect the mic/speaker switching levels.
High volume
(unit speaker, handset
receiver, or headset
receiver)
1.
Decrease the volume settings via potentiometer R75.
2.
Decrease the Master Volume setting via the front panel keypad and press
Enter.
3.
Decrease the Intercom Level Setting of the 69547-001 Intercom
Assembly by rotating the potentiometer RM clockwise.
Caution!
This
will affect the mic/speaker switching levels.
Low volume
(external speaker)
1.
Increase the volume settings via potentiometer R43 (EXT SPKR
LEVEL).
2.
Increase the Master Volume setting via the front panel keypad and press
Enter.
3.
Increase the gain setting on P36/P37.
4.
Increase the Intercom Level Setting of the 69547-001 Intercom Assembly
by rotating the potentiometer RM counterclockwise.
Caution!
This will
affect the mic/speaker switching levels.
High volume
(external speaker)
1.
Decrease the volume settings via potentiometer R75.
2.
Decrease the Master Volume setting via the front panel keypad and press
Enter.
3.
Decrease the gain setting on P36/P37.
4.
Decrease the Intercom Level Setting of the 69547-001 Intercom
Assembly by rotating the potentiometer RM clockwise.
Caution!
This
will affect the mic/speaker switching levels.
