Instruction manual

7-3
Trouble Location LEDs/Troubleshooting Procedure Cross Reference
Control Module (DCDC) Trouble LEDs
NORMAL
LED
TROUBLE
LED D12 D11 D10
Module LED Trouble Description
Troubleshooting
Procedures
ON OFF OFF OFF OFF Normal
OFF OFF OFF OFF OFF Power Loss A
ON ON OFF OFF OFF Faulty Control Module B
OFF ON OFF MDX-2 DV PLAY EOLR Missing C
STROBE Trouble on Visual Notification Ckt. D
AUDIO Trouble on Audio Output Wiring E
PWR Trouble on 24VDC Speaker Power F
OFF OFF ON SAA/SALL
AMP Trouble on SAA/SALL Module G
ON ON OFF RMS-3 Any Remote Microphone Trouble H
ON OFF ON DCPS Power Supply Trouble I
ON OFF OFF MDX-2 DV Status Trouble See Table 7-2
OFF
ON
OFF ON ON Panel Mic Panel Microphone Trouble J
Table 7-2
MDX-2 Trouble Procedure Cross Reference
DV Module
System Normal
LED (Green)
DV Module
System Trouble
LED (Amber)
DV Module
Trouble Indicator
LED (Amber)
What it Means
Troubleshooting
Procedure
On Off Off Normal ----
Off Off Off Power Loss K
Off On Off DV Module Inoperative L
Off On Steady-On DV Module Inoperative M
Off On 2 Blink Pattern Message Memory PSRAM Error N
Off On 4 Blink Pattern Output Channel Error O
Figure 7-2 on Page 7-4 is the basic troubleshooting flowchart describing the troubleshooting
procedure in a graphic manner. The following flowcharts contain the same information as
described in Tables 7-1 and 7-2.