Troubleshooting Guide - GE 9100c Technical Reference Manual

7.3 Troubleshooting guide

Symptom Probable cause
• Shut down mode 1. Cable from CSB to DMB.
2. CSB
3. DMB
The system will check the connection between CSB and DMB when it is power on.
Symptom Probable cause
• AC LED not lit 1. Universal power supply
(Power cord plugged into
live receptacle; AC Inlet 2. Front panel keyboard (LED is part of it)
circuit breaker On)
(The problem is most likely 3. DMB
in the +15V supply or in the
LED circuit.)
The LED is powered by the +15V supply from the universal power supply. Turn system switch to On. If ventilator operates from the
main supply, check 1. If ventilator operates from backup battery, check 2 and 3.
Symptom Probable cause
• Nothing happens when 1. Cable from J8 of CSB to system switch.
System switch is turned
On 2. Cable from CSB to DMB.
(The problem is most likely
somewhere between the
system switch and the
control sample board.)
Turning the system switch to On should connect the power to the system. It is a physical connection for the power supply.
Symptom Probable cause
• No display 1. Ribbon cable, DMB to LCD display
(System switch On; LED lit)
2. LCD display
(The problem is most likely
in the Display Module.) 3. DMB
The lit LED indicates that AC power is getting to the power supply. The power supply is most likely OK since it's supplying the 15V
to power the LED.
Symptom Probable cause
• No alarm audio 1. Speaker cable
(Alarm messages OK)
2. Speaker
(The problem is most likely
the speaker or control 3. DMB
board.)
Power for the speaker comes from the Power Section of the DMB. Drive for the speaker comes from the Digital Section of the DMB
board.
M1207026
M1207027
Reproduced from the electronic master in MATRIX
004 MANUAL−DOC, Technical Reference Manual, Technical Reference Manual for 9100c, English
7 Troubleshooting
Action
1. Check cable connection.
2. Replace CSB.
3. Replace DMB.
Action
1. Check power supply output (Section 2.7.2).
2. Check ribbon cable connection; replace front
panel keyboard.
3. Replace DMB.
Action
1. Check/jumper cable connection; replace cable.
2. Check cable connection; replace cable.
Action
1. Check cable connection.
2. Replace LCD display.
3. Replace DMB.
Action
1. Ensure cable is plugged in.
2. Replace speaker.
3. Replace DMB.
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