CI-1255e™ Power Amplifier
Hafler
Passion for Perfection
12
TRoubLeShooTING foR oTheR CoNCeRNS
If a problem is encountered with the CI-1255e, the most expedient procedure is to locate the problem and if possible solve it
before requesting service. Be sure to carefully check other system components such as controllers, CD players, volume controls,
wiring, speakers, etc. that may be at fault. More often than not, problems are due to poor connections or problems due to not fully
understanding the system. The following are common problems and solutions:
Power Led does not go on
1. Check that the CI-1255e is plugged in… no light - no sound.
2. Test the AC outlet with a lamp to make sure a fuse or breaker has not blown.
3. If no sound, check signal LEDs to make sure program material is reaching the amp.
4. Check CI-1255e power button is pushed on and in the inward position.
Sound cuts out and then comes back on
1.
Verify speaker impedance is 4-16 Ω, if below 4 ohms, the amp may be overheating.
2.
Check if the CI-1255e feels hot, if it does, make sure sufficient ventilation has been provided and check to make sure the CI-
1255e fan is working or not obstructed in any way.
Sound is distorted
1. Check the front panel LED peak indicators, if in the red, turn down the source volume.
2. Try adjusting the CI-1255e level controls if set too low, as it could be starving the speakers.
3. Check speakers for damage.
4.
Check to ensure speakers are not less than 4 Ω.
CI-1255e does not turn on
1. Check to make sure the power cable is connected.
2. Make sure the power switch is pushed in (in the ON position).
3. Check the signal present LEDs to make sure source signal is being received.
Speakers pops when amp turns on or off
1. The speakers may need a resistor placed across the amp terminal.
2. We suggest 2k0 ¼ W resister.
3. This will discharge the speaker output’s internal capacitor.
Speakers sound as if lacking bass
1. Out of phase speakers give unstable imaging and poor bass response.
2.
Make sure the speakers in each room are connected in phase with the amplifier.
3. Check that the positive (+) terminal from the amp is going to the positive terminal on the speaker.
Circuit breaker (fuse) trips all the time
1.
Make sure you connect the amplifier’s AC power into an outlet that supplies at least 15 amps 110~120 VAC or 7.5 amps 220
~240 VAC (1000 watts).
2.
One circuit as described here needs to be dedicated to each CI-1255e and not shared with any other appliance or amplifier.
eCoSySTem turns amp off prematurely or Sound Present indicators are not showing any signal present and sound is
playing on speakers.
1.
Turn down GAIN pots on affected (or all) channels on rear of CI amp (suggest starting with ¼ to 1/3 gain) and turn up source
volume accordingly. Signal presence and ECOSYSTEM are sampled before the individual channel gain pots.
ECOSYSTEM will not allow amplifier to turn off. This may be due to noisy input lines.
1. Disconnect all RCA inputs to the CI amp. Individually connect the RCA inputs one at a time to discover which (or all) inputs
are causing the problem.
2. On the affected (or all) channels turn the GAIN (on the CI amp rear) up (suggest starting with fully on clockwise) and adjust
down the source volume accordingly.
Summary of Contents for CI-1255e
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