WARSANIS 1401FM USER MANUAL
Be very care full, do not touch any other pins than those shown below!!
A.
Leveler and System switch: operate.
B.
Feed program material or white noise to the unit.
Low band check (front PCB board2)
Check audio on pin 1 and 7 at U5
Mid Low band check (front PCB board2)
Check audio on pin 1 and 7 at U2
Mid High band check (front PCB board2)
Check audio on pin 1 and 7 at U3
High band check (front PCB board2)
Check audio on pin 1 and 7 at U8
MULTIBAND TEST
Settings:
A.
Switch the Leveler into bypass, be sure that the System switch is in
Operate.
B.
Leveler drive -
C.
Multiband Drive 10
D.
Multiband Clipping -4
E.
Loudness Clipping -4
A.
Feed pink noise into both channels, increase the input till the
>Multiband gain reduction meter= indicates -15.
B.
Check the led meter on the front panel.
C.
Decrease the signal by 10dB in one step.
D.
When listening to the output of the unit the pink noise should be
increasing very fast almost unnoticeable. The time in which the audio
increases depends on the setting of the density switches.
MULTIBAND CLIPPING TEST
No audio is necessary to preform this test.
A.
Locate the multiband clipper diodes on the output board. These diodes
are located right of U5 on the PCB.
B.
Connect your DC meter to the right of Diode D1.
C.
Check the DC voltage at the anode (right side) of D1.
D.
Your meter should be reading negative 1.16 Volt/DC (" 0.2 Volt)
E.
Set the Multiband Clipping control to +4
F.
Your meter should be reading negative 0.65 Volt/DC (" 0.1 Volt)
G.
Repeat steps= C, D, E and F at the cathode (left side) of Diode D2.
Your DC meter should be reading positive voltages.
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