(b) Pull out the Power Amplifier unit from console.
(c) Remove the upper panel of Power Amplifier unit.
(d) Turn on the “AC” switch, pressing MENU .
(e) Press MENU and turn the dial to “80V ADJUST” menu on the LCD.
(f) Press ENT and adjust the PA(A) Vc to 78V by RV3.
80V ADJUST
PA(A) Vc 78.0V
(g) Press ENT and turn off the “AC” switch.
(h) Re-assemble the unit.
4.2.5 BIAS-level adjustment
Since BIAS-level is already adjusted at the time of factory shipments, it is not necessary to
adjust it at the time of installation.
Note
Procedure
(a) Turn off the “AC” and “DC” switches on the front panel.
CMC-2692/2695/2698
PA CONTROL UNIT
AC switchDial
A
CAH-2692
PA UNIT
BIAS(A) 1
BIAS
(A) 2
RV2
RV1
B
C
(b) Pull out the Power Amplifier unit form console
(c) Disconnect the all cables on the rear of Power Amplifier unit.
(d) Remove the under panel of Power Amplifier unit.
(e) Turn volumes* on the PA CONTROL UNIT (CMC-2692/2695/2698) fully counter-clockwise.
(*) CMC-2692: RV1, RV2
CMC-2695: RV1, RV2, RV101, RV102
CMC-2698: RV1, RV2, RV101, RV102, RV201, RV202
(f) Connect the AC power cable only.
(g) Turn ON the “AC” switch, while pressing MENU .
(h) Press MENU and turn the dial to “PA BIAS ADJUST” menu on the LCD of Power Amplifier.
(i) Press ENT to display the PA BIAS-level.
PA BIAS ADJUST
0.0 A
(j) Gradually turn RV1 on the PA CONTROL UNIT clockwise until PA BIAS reading becomes 1.0A.
PA BIAS ADJUST
1.0 A
49
To Next Page
Loading...
