Revox B126 Serviceanleitung Seite 59

STUDER REVOX REVOX B126/226—S
E 4/9
4.3.3 Adjusting the Laser current
-> Fig. 4.16
@ Remove the play mechanism from the unit (Section 2.4.1).
Unscrew the SERVO PCB (Section 2.5.6).
a Turn the CD player upside down and place the play mecha-
nism on the bench in normal operating position.
a Play the test CD No. 3 (track 1).
a With the trimmer potentiometer R 3106 on the SERVO PCB
adjust the reading on the AF voltmeter to 50 mV DC g5 mV
by means of R 3102 (4k7).
4.3.4 Focus-offset adjustment
-> Fig. 4.17
The CD-drive chassis must be in its normal operating
position. Use the Philips test cd no.3, for measuring take
a digital voltmeter.
e Start the CD-drive by turning step by step the
trimmpotentiometer R 3106 (SERVO PCB) from position
1,2,3,...etc. onwards.
e After the laser is in focus adjust with R 3146 to
achieve a voltage drop of +400 mV measured over C 2136.
INITOR
ese!
Fig. 4.17