THG TIM 2015, Technical Manual

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TIM 2015 Technical Manual v1 (February 2018) Page 22
7. One of the LEDs lights up brighter/dimmer than the others.
This is annoying but the truth is that the relative brightness of LEDs differs widely from colour to colour, type to type and manufacturer to
manufacturer. The resistor values were chosen for the LEDs that our designer used but you may like to SOT (select on test) the resistors you
use. For instance if the blue (DATA) LED appears too bright, you could change the value of R15 to around 5.6k. There is a good article on
choosing resistor values for LEDs at
http://www.instructables.com/id/Choosing-The-Resistor-To-Use-With-LEDs/ .
Electrical problems
If your TIM 2015 displays an error code on the screen, please go back to Chapter 7, Diagnostic Messages , where these are discussed.
1. Weak audio
The volume control on the front panel (right-hand knob) adjusts only the loudness of the monitor speaker. There is also a ‘master’ volume
control that you can operate by pressing the left-hand knob and entering the Settings menu. Scroll through until the arrow points to Voice
Volume and press the knob again. You can now alter the volume by rotating the knob; this displays the volume from 1 to 30 and also lets
you hear what the new volume is. Finally press the knob once more to store the new setting.
2. No audio at all
The most likely cause is misalignment of the microSD card that carries the sound files. Power down TIM 2015 temporarily and eject the
sound card by pushing it in gently, after which it will pop out. The circular label should be on the
upper side and the gold-plated contacts
on the lower side. The end with the gold contacts goes in first. Even if the card was positioned correctly, you may find that ejecting and
replacing it cures the problem. This happened with one clock, for no apparent reason, but ejecting and replacing the card put paid to the
issue. Then re-apply power to check the result. If this doesn’t solve your problem an internal fault may exist. Please contact us for help (see
front page of this document).