Pioneer CDX-MG6056ZH Service Manual page 72

CX-890
When the conditions mentioned above are satisfied and
focus is closed, the XSO terminal changes from "H" to
"L". Then, the microcomputer starts monitoring RFOK
signal through L.P.F after 40 ms.
If the system judges RFOK signal as "L", the microcom-
puter takes actions, including protection.
Fig. 10 shows operations related to focus closing. (The
illustration shows when the system cannot perform
focus closing.) S curve, search voltage, and actual lens
behavior can be checked by pressing the Focus Close
button when "01" is shown in Focus Mode Select in Test
mode.
8
FD
LENS POSITION
RELATIVE TO DISC
NEAR
FAR
SIN
Expanding around "Just Focused Point"
RFI
FOK
FEX
FZD
(INTERNAL SIGNAL)
Focus closing would normally take place at these points
XSO
(IN THE EVENT
FOCUS IS
CLOSED)
Fig. 10 Sequence of Focus Closing
REFOUT
"JUST FOCUSED"
LEVEL
REFOUT
REFOUT
FZD
THRESHOLD
LEVEL