Revox C221

RÄ/ox C221
CD Player
Service Manual
5.3
Alignment
-
servo
board
The following alignments can be made on the servo board:
o
Focus voltage alignment
.
Laser current
alignment
5.3.1
Aligning the
focus voltage
Proceed as
follows:
.
Remove
the housing. Refer to
Section
3.2
o
lnsert the
Philips CD
"Test
Sample
3" and
play
track
1.*
.
Measure U(focus)
between P31 and
ground.
.
Adjust U(focus)to
400 mV with RA1.
5.3.2
Aligning the laser current
Proceed as follows:
.
Remove
the housing. Refer to
Section 3.2.
.
lnsed the Philips CD
"Test
Sample 3" and
play
track 1.*
.
Measure
U(laser)
between P13
and
P30.
o
Adjust
U(laser)to
50 mV with
RA2.
*
You may
use any
CD without
scratches.
lmportant:
Play only
track
''t.
5.4
Alignment
-
converter board
No alignments are
possible
on
the
convefter board.
40