Revision A • 6/06
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5-6
5 Service
PIN NUMBERING,
WIRE INSERTION VIEW
6 5 4
3 2 1
PIN NUMBERING
WIRE INSERTION VIEW
1 2 3 4 5
99-1205 Supply End Console End
DC Power Cable Connectors
EVENT TIMER TROUBLESHOOTING
If the tenths of seconds display is not function-
ing as expected, check the multi-switch setting on
the clock-timer circuit board. DS1-1 sets whether
the tenths of seconds are displayed while the event
timer is running. The tenths of seconds are always
displayed while the event time is in Hold or Stop
modes.
If the event timer does not auto-reset as expected,
make sure the Auto button is lit on the Monitor
panel and that the channel setup parameter
Timer
Reset is active (LED is lit) for the channel sources
that should be resetting the event timer.
METER TROUBLESHOOTING
Each meter is coupled through the clock-timer
board for power and signals. There is a flat cable
that connects the clock-timer (J6) to the Monitor
& Output board (J23). If neither meter is work-
ing, shut down the console and remove the Con-
sole Display subassembly and check that the meter
and clock-timer boards are firmly connected and
that both boards are securely fastened to the dis-
play assembly. Check that the flat cable is prop-
erly plugged in at each end. Also check that the
switches on multi-switch DS3 on the meter board
are fully set to their on or off positions. The de-
fault settings for NetWave is all switches are set to
their off positions.
48-Volt Supplies
Periodically check that the vent openings on the
99-1205 rack mount supply are not blocked and
that there is no dust buildup on the top cover open-
ings. On the 50-27 in-line supply, periodically
check that it is not covered up by any materials
like cables, papers, etc. It relies on a free air flow
around it to keep it cool.
The green LED on the front of the rack mount
and on the top of the in-line power supply indi-
cates its 48-volt DC 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
The in-line supply (50-27) has a captive DC
output cable while the rack mount supply has a
detachable DC cable. Both use the pinouts shown
below for the 90-1858-1 cable (the interconnec-
tion cable from the 99-1205 supply to the con-
sole).
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
