Techcomp UV 2600 - Failure Cause and Countermeasure; Replacing Fuses

CHAPTER 4 MAINTENANCE
35
4.3.2 Failure Cause and Countermeasure
If instrument is abnormal, deal with it according to the following.
Symptom
Cause
Countermeasure
Turn on the instrument, but
no action
（ Instrument unable to
operate）
(1) Power cord, fuse are
abnormal
(2) Work power supply
abnormal
(1) Replace power cord and
fuse.
(2) Replace work power
supply
After powering on, light
source is not ON,“D2 ！”
or“WI！” displayed on status
display.
(1) Relevant light source
lamp is broken.
(2) Light source light has
been set under OFF status.
(1) Replace relevant light
source lamp.
(2) Confirm setting of light
source lamp again.
Data fluctuation is large
(1) There is sth blocking
optical path in sample
compartment.
(2) Lamp performance
decreases.
(3) Lamp or viewfinder
contaminated
(4) Misoperation during zero
calibration.
(1) Take out material
blocking optical path.
(2) Replace light source
lamp.
(3) Replace, clean lamp/
viewfinder.
(4) Adjusting zero correctly.
“656.1nm ！” displayed on
status display
Wavelength value is not
correct
(1) Perform wavelength
calibration.
(2) Contact to our Service
Department.
“ ROM ！” or“ RAM ！”
displayed on status display
Micro control board fails
Replace micro control
board.
”Wavelength drive!”
displayed on status display
(1) Abnormal wavelength
driver
(2) Abnormal wavelength
resetting signal
(3) Micro control board fails
(1) Check wavelength
screw, slide, screw for
fixing, motor etc.
(2) Replace microswitch of
wavelength resetting.
(3) Replace micro control
board.
4.3.3 Replacing fuses
There are fuses（3.15A） installed in instrument input power supply, and power
supply board, circuit board inside instrument.
If fuse is found broken, first check and find the cause. Then replace the fuse.