JVC TH-A25 Service Manual page 17

5.2 DVD Servo parts
5.2.1 Initial operation after power ON
3
4
Dual layer judgement
Single
DVD single
initial setting
POWER ON
Is Tray closed?
Y
Pick up head initial position.
Disc present or not
Disc present
Y
CD or DVD judgement
DVD
DVD single or
Dual
DVD Dual
initial setting
To Each disc playback
(DVD Dual)
N
Tray close operation.
about 3sec.
Y
Is Tray closed?
Stop Close operation.
Wait Open Command from MPEG
N
Laser Off
Monitor Display=NO DISC
CD
CD or CDRW
judgement
CD
CD CDRW
initial setting initial setting
(DVD single)
N
CDRW
(No.MB143)1-17