Teledyne Replacing the PMT, HVPS or TEC, M102E/M501 TRS, Troubleshooting & Repair, Rev A1

M102E/M501 TRS TROUBLESHOOTING & REPAIR

(Addendum to M101E Manual - P/N 04740 Rev A)

5.Carefully remove the UV filter.

6.Install the UV filter. Handle carefully and never touch the filter’s surface. The UV filter’s wider ( ring ) side should be facing out. Install the UV filter retainer and tighten screws.

7.Install the shutter cover and minifit connector. Tighten 4 screws.

8.Re-plug J4 connector into the motherboard.

10.5.3. Replacing the PMT, HVPS or TEC

PMT Housing End Plate

This is the entry to the PMT Exchange

PMT Output
Connector	PMT Preamp PCA

PMT Power Supply	High voltage Power Supply
& Aux. Signal	(HVPS)
Connector
	PMT
	O-Test LED

PMT Cold Block

Insulation Gasket

PMT Temperature	Light from Reaction
	Chamber shines
Sensor	through hole in side
	of Cold Block
	Thermo-Electric Cooler
	(TEC)
	PMT Heat Exchange Fins
	TEC Driver PCA

Cooling Fan

Housing

Connector to PMT

Pre Amp PCA

12V Power

Connector

Figure 10-3: PMT Assembly - Exploded View

The PMT should last for the lifetime of the analyzer. However, in some cases, the high voltage power supply (HVPS) or the thermo-electric cooler (TEC) may fail. To replace the PMT, the HVPS or the TEC:

1.Power down the analyzer, disconnect the power cord, remove the cover and disconnect all pneumatic and electrical connections from the sensor assembly.

2.Remove the entire sensor module assembly from the.

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