Revision C
.1
• 1
2
/
10
H
A
R
R
I
S
C
O
R
P
O
R
A T
I
O
N
5-7
5 Service
Any channel that should reset the timer when
turned on needs to be set as =1. Those channels
set as =0 do not reset the timer when turned on.
For more information about session file settings,
see Chapter 4 RMX
digital Server.
METER TROUBLESHOOTING
The meter PCA plugs into the clock-timer PCA.
If the meters are not working properly, check that
the DIP switches are set correctly. The settings are
covered on page 2-6 and 2-7.
Backup Batteries
A “Keep Alive” voltage is generated by three AA
nickel cadmium (NiCad) batteries supplied in the
tool kit. These batteries supply voltage to hold each
channel strip’s button state and signal selection
during momentary power outages so the console
returns to the same state when power is restored.
If the console does not return to its previous
state after being powered down for only a few min-
utes, then the batteries probably need replacing,
although there could be a problem in the battery
charging circuit or motherboard connection. Check
the charging circuit and motherboard connection
by removing one battery and then measuring the
voltage (should be about +4.5 VDC) on the bat-
tery terminals while the console is powered.
Although the batteries should last several years
when under continuous trickle-charging, it is rec-
ommended that they be replaced yearly. See page
2-9 for replacement information.
48 Volt Power Supply
Periodically check that vent openings are not
blocked and there is no dust buildup on the top
cover openings. The green LED on the power sup-
ply front panel indicates its 48 volt output is good.
CAUTION:
To reduce the risk of
electric shock, do not disassemble
the power supply. Refer servicing
to qualified service personnel.
POWER SUPPLY CONNECTIONS
See page 2-8 for interconnection details. Only
one connection is required from the supply’s
5-pin connector. 90-1858-1 is the interconnection
cable from the power supply to the console frame.
90-1858-1 Cable Color Code/Pinout
Supply End Signal Wire Color Console End
1
+48 V
Red
1
2
+48 V
White
4
3
Shield
Clear cover
2
4
+48 V Return
Black
6
5
+48 V Return
Green
3
-
-
no connection
5
PIN NUMBERING
WIRE INSERTION VIEW
6 5 4
3 2 1
PIN NUMBERING
WIRE INSERTION VIEW
1 2 3 4 5
Summary of Contents for RMXDIGITAL
Page 2: ...Revision C 10 07 H A R R I S C O R P O R A T I O N ii...
Page 90: ......
