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Adjustments 2.
ADJUSTMENTS
5V
When replacing IC, LM3578, on PCB2, Switch-Mode Power Supply, the supply
voltage may have to be adjusted to 5V ±0.25V by means of R2 and R0:
- If 5V is above level, install R2 (R//R2).
- If 5V is below level, install R0 (R3//R0).
SPEAKER
Adjustment of bass/treble sound level.
To be carried out only when replacing a speaker unit or PCB36, Microcomputer.
TEST MODE 0
This test mode permits manual adjustment of speaker bass and treble levels and
can only be executed from stand-by with a Beo4.
- Press
MENU 0 1 GO
.
The display reads SPK.CAL. to indicate that the product is ready for speaker
calibration.
- Press
GO
.
The display shows the present adjustment:
‘X X X X’ = left bass (LB).
‘X X X X’ = left treble (LT).
‘X X X X’ = right treble (RT).
‘X X X X’ = right bass (RB).
The value that can be changed is flashing. Press
>>
or
<<
to change unit of
adjustment, and change the value by pressing the digit keys. When all four
speakers have the desired encoding, press
STORE
, and abandon test mode by
pressing
STOP
.
C3
L1
IC1
L2
C7
R11
C1
C2
R3
R10
R1
R2
R5
R4
2
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