Doble TDR900 User Guide
72A-2612-01 Rev. A 09/06
66
7.4 Field Repairs
There are no user maintainable parts within the TDR900. Contact Doble customer service
at 617-926-4900 or e-mail customerservice@doble.com for support.
In a case of a severe problem, your Doble technical support team may recommend
removal of one the boards within the Doble TDR900 test set for return to Doble. This is a
simple process, but appropriate precautions should be taken to prevent electrostatic build-
up and discharge damage to the boards:
• Disconnect TDR900 from power supply
• Remove power leads and test cables
• Remove main cover of TDR900
• Disconnect power supply from input connector on front pane
• Unscrew main circuit board assemblies, complete with power supplies
Before returning any defective modules to Doble, call or e-mail Customer Service to
receive an RMA number. Return the main modules to Doble in padded and protective
packaging.
7.5 Parts List
Table 2 lists the parts you may obtain for the TDR900 from Doble Engineering
Company.
PART NUMBER DESCRIPTION
071-0036-04 Cable Bag
Littlefuse 312 001P Fast Blo,
3AG Glass Cartridge UI and
CSA certified or equivalent
M5200 Fuse
Littlefuse 312 01.5P Fast Blo,
3AG Glass Cartridge UI and
CSA certified or equivalent
TDR900 Fuse
Table 2. Parts List
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