Yokogawa In-Situ Gas Analyzer TDLS200 - Manual (Page 127)

9-1 9-2
IM 11Y01B01-01E-A 6th Edition :Feb 13, 2013-00
<9. TROUBLE SHOOTING>
9.1 Common Troubleshooting Steps
For most conditions the troubleshooting steps are common. In general, the most common issues
with the analyzer revolve around ensuring an adequate amount of the laser light is received at the
detector.
• Check Status LEDs. This will ensure that power is routed properly to the system
components. Status LEDs are listed below:
Blue LED #
(from left to right)
Voltage VDC Use
D20 +5 Laser temp control power supply
D26 -15 Isolated power supply
D27 +15 Isolated power supply
D24 +8 DFB laser driver power supply
D23 -8 DFB laser driver power supply
D22 -12 DFB laser driver power supply
D16 -12 Detector board power supply
D19 -12 VCSEL laser driver power supply
D6 -15 Analog I/O board power
supply
D12 -15 FPGA board power supply
D18 +12 VCSEL laser driver power supply
D7 +12 LCD power supply
D8 +24 Main power supply
D9 +15 Analog I/O board power
supply
D10 +5 SBC power supply
D11 +15 FPGA board power supply
D13 +5 FPGA board power supply
D14 +6 FPGA board power supply
D15 +12 Detector board power supply
D17 +12 General 12V power supply