Tectrix Climbmax 150 - Is Turned on

•
•
•
1_
OTHER PROBLEMS
15. Some LED's (lights) Are Out On The Display And There Is A Beep When The Power
Is Turned On
Power up in the Test Mode (see section 3) to check for LED's out. Replace the display board (see section 30)
if there are some LED's out.
16. All LED's (lights) Are Out On The Display And There Is No Beep When The Power
Is Turned On
16.1 Blown Fuse
Remove the cover (see section 25) and check the fuse (11 OVAC - MOL 3/4A 250V, or 220V - MOL 1/2A
250V) located on the power board (see Fig. 16). Check the fuse for zero ohms (good) using a volt ohm meter
(a visual check is not reliable). Usually a fuse doesn't blow for no reason so it may blow again (because it is
a slow blow fuse it may take up to a minute to blow). If it does, replace the fuse and unplug all of the
connectors except J1 (see Fig. 16). If it blows again, replace the power board assembly. If it doesn't blow,
plug each connector back in one at a time to find the part that is causing the fuse to blow. Replace that part.
16.2 Power Switch Test
Check that all wires are intact on the switch plate and power board. Using the volt ohm meter, check that the
power switch is supplying 110 volts AC to the power board. Place the meter probes on the black and white
wires
on top of the power switch (switch on and power cord plugged in). CAUTION: Care is required when
reading high voltage. Do not touch the two leads of the volt ohm meter together during the test as this can
create a short. If no AC voltage is present at the power switch try a different power cord. Make sure that 110
VAC is present at the wall outlet. If there is still no power, replace the switch plate assembly (see section 33).
16.3 Power Board Test (see Fig. 16 & 17)
Check that there is 9.2 +/-.2 volts DC at the test points (labeled '9.2 VDC' and 'GND') located in the right
bottom corner of the board (older versions of the power board do not have the test points, voltage may be
tested at pin 14 on the display connector (J2) using pin 1 (or the square pad) as the ground reference). Ifthe
voltage reading is less than 9 volts, unplug the display ribbon cable at the power board (J2) and read the
voltage again. If it is still less than 9 volts, replace the power board assembly. If the voltage is correct, replace
and test each of these parts in the following order: 1. display ribbon cable (see section 31), 2. display board
(see section 30).
Page 19