Denon DBP-1611UD Service Manual page 13

DIAGNOSTICS OF OPTICAL PIC UP d
Make failure diagnostics of the Optical Pickup as follows.
q If the laser drive current (Iop) becomes more than BD : 6 mA , DVD or CD : 12 mA of the initial value, the Optical
Pickup should be replaced.
The laser drive current initial value is checked by "Iop checked Method" of ne t page.
w L oad five times of following disc again and playing it for one minute. It becomes the aim of the Optical Pickup
e change when it cannot play.
In case of replacing the Pickup, change the whole part of the BD MAIN UNIT (including the MAIN PWB UNIT) or BD
MEC A UNIT ASSY.
No mechanical adjustment is necessary after the replacement. ( OW TO REPACE T E BD MAIN UNIT OR T E BD
MEC A UNIT ASSY (page 1 ))
DVD :
BD(SL) :
q Check the laser drive current value
Disc no read, unsteady playback, etc.
Laser drive current (Iop) check.
The BD MAIN UNIT
or the BD MEC A UNIT ASSY replacing.
BD-RE ABD-RE 40W(made by ALMEDIO)
L ser dri e current initi
FL Display (The display part of 13 digits)
1 2 3 4
CD :
T 2 1 : m m m m : n n n n
FL Display (The display part of 13 digits)
1 2 3 4
T 2 2 : m m m m : n n n n
FL Display (The display part of 13 digits)
1 2 3 4
T 2 3 : m m m m : n n n n
Current value of the BD Iop is 6 mA ,
DVD or CD Iop is 12 mA or more the
initial value.
ue
6 7 8 9 10 11 12
6 7 8 9 10 11 12
6 7 8 9 10 11 12
w Check the playability disc
Disc no read, unsteady playback, etc.
ABD-RE 40W disc playability check
(Load five times of following disc)
The BD MAIN UNIT
or the BD MEC A UNIT ASSY replacing.
13
13
13
13
Disc cannot play.