Teledyne 2010A - Split architecture thermal conductivity analyzer - Manual (Page 66)

5 Maintenance Model 2010A
5-2 Part I Teledyne Analytical Instruments
Preamp
0 OK
1 Zero too high
2 Amplifier output doesn't match test input
3 Both Failed
>3 Call factory for information
Cell
0 OK
1 Failed (open filament, short to ground, no
power.)
2 Unbalance (deterioration of filaments, blocked
tube)
5.3 VFDD Display
NOTE: When a vacuum Fluorescent Display is used, It will not
require contrast adjustment.
If you cannot read anything on the VFD, especially after first powering
up, check that VFD cable is not loose.
5.4 Fuse Replacement
1. Place small screwdriver in notch, and pry cover off, as shown in
Figure 5-1.
Figure 5-1: Removing Fuse Block from Housing