Yamaha QL5 Service Manual

QL5/QL1
139
2-5. Fader Travel Time Measurement Test
Before this test, check to make sure that “FADER
CALIBRAION” on page 159 has been executed.
Press any 3 switches simultaneously in the Encoder Input Test
mode, and the Fader Travel Time Measurement Test mode will
be activated.
First, repeat reciprocal movement of all faders by the specifi ed
number of times before taking measurement.
The check results are indicated with SEL/ON LEDs arranged
on each fader.
If ascending is NG,the SEL-LED turns on and if descending is
NG, the ON-LED turns on.
• Check to make sure that SEL/ON LEDs arranged on each
fader are all turned off.
It is possible to re-check by pressing whichever one switch.
2-3. Switch Input Test
Press any 3 switches simultaneously in the Respective Color
LEDs Lighting Test mode, and the Switch Input Test mode will
be activated.
Have the LEDs corresponding to each switch lit in advance,
press and release the switch, and the corresponding LEDs
should turn off.
In the same way, check all the switches.
Confi rm visually if all the LEDs which were lit in advance have
been turned off.
For the switch without LED, have the nearby LEDs lit
correspondingly.
The SW reaction may be delayed as the reset in DANTE may
take a while.
As this is repeated once every ten over seconds depending on
the differences of the DANTE module, the symptom will no
longer appear if the cause is entered in DIAG after opening
DANTE SETUP from the SETUP screen in the normal mode
and then changing the SECONDARY PORT to REDUNDANT
before switching on the power again.
This problem does not occur during normal operations.
2-4. Encoder Input Test
Press any 3 switches simultaneously in the Switch Input Test
mode, and the Encoder Input Test mode will be activated.
Have the LEDs corresponding to each encoder lit in advance,
turn each encoder clockwise and counterclockwise one by one,
and the corresponding LED should turn off.
In the same way, check all the encoders.
Confi rm visually that all LEDs which were lit in advance have
been turned off.
For the encoder without LED, have the nearby LEDs lit
correspondingly.
* For the corresponding LED of the encoder, the test is the same
as the Switch Input Test.
Encoder Made to correspond to CH METER
GAIN CH30/QL5(CH14/QL1) to -6
PAN CH30/QL5(CH14/QL1) to -12
HPF CH31/QL5(CH15/QL1) to -18
DYNAMICS 1 CH32/QL5(CH16/QL1) to -6
DYNAMICS 2 CH32/QL5(CH16/QL1) to -12
EQUALIZER-Q CH30/QL5(CH14/QL1) to -30
EQUALIZER-Freq CH31/QL5(CH15/QL1) to -30
EQUALIZER-GAIN CH32/QL5(CH16/QL1) to -30
TOUCH AND TURN CH30/QL5(CH14/QL1) to -0

Yamaha QL5 Specifications

General

DJ mixer	-
Product color	Black
Video capability	No
Channels quantity	72 channels
Supported sample rates	44.1, 48 kHz
Digital sound processing	- bit
Phantom power	48 V
AC input voltage	100-240 V
AC input frequency	50 - 60 Hz
Power consumption (typical)	200 W
Total Harmonic Distortion (THD)	0.05 %

Weight and Dimensions

Depth	563 mm
Width	828 mm
Height	272 mm
Weight	21800 g