Sharp MD-MT877S Service Manual page 20

MD-MT877/MD-MT877C
Servo ATT Auto Adjustment
* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.
* Move the pickup lens manually to the innermost periphery before performing the servo
ATT auto adjustment. (Refer to "Change of test mode menus" for the operation method.)
* "
Continuous Playback
• Continuous playback from current pickup position
• Continuous playback from any address
* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.
* In the start address set state the start address changes as follows when the [DISP] button is pressed.
0 0 3 2
* In the start address setting state the start address change digit changes when the [P-MODE] button is pressed.
1st digit (initial value)
* In the start address set state the value of selection digit changes in the range of "0h to Fh"
when the [FAST FORWARD/REVERSE] button is pressed
* If the [P-MODE] button is pressed in the continuous playback state, the mode is changed to the B-ATT setting
state of the ATT manual adjustment.
A U T O 2
PLAY
A T 2
Adjustment error
A D J . N G
Normal end
A D J . O K
PLAY
S Q # # # #
A P # # # #
" represent the adjustment number as follows.
0 0 : Initial setting
0 3 : Pit section tracking ATT setting
0 4 : Pit section focus ATT setting
0 6 : Sled external periphery move
0 7 : TCRS ATT setting
0 8 : Groove section tracking ATT setting
0 9 : Groove section focus ATT setting
T P L A Y
PLAY
AUTO1 Practice finish?
YES
AUTO2 Practice finish?
YES
S Q # # # #
A P # # # #
T P L A Y
DISP
A d 0 0 3 2
PLAY
S Q # # # #
A P # # # #
(initial value) 0 3 C 0
H
DISP
A d 0 0 3 2 A d 0 3 C 0
2nd digit
MODE
A d 0 0 5 0 A d 0 0 5 0
: Continuous playback (pit section)
S Q # # # #
: Continuous playback (groove section)
A P # # # #
P-MODE
: High-reflection pit section B-ATT (focus) setting
H B
: Low-reflection groove section B-ATT (focus) setting
L B
: ATT auto adjustment menu
: During ATT auto adjustment
: ATT adjustment error (adjustment value output)
: ATT adjustment error (adjustment value output)
: Continuous playback (high reflection)
: Continuous playback (low reflection)
(low reflection only)
(low reflection only)
(low reflection only)
(low reflection only)
: Continuous playback menu
NO
E r A D J
NO
AUTO2 Practice
YES
No error?
NO
A D J. N G SQ : Continuous playback (pit section)
AP : Continuous playback (groove section)
: Continuous playback menu
: Start address setting
: Continuous playback (pit section)
: Continuous playback (groove section)
# # # # : Address
0 7 0 0
H
H
DISP
A d 0 7 0 0
0 9 5 0
H
DISP
A d 0 9 5 0
3rd digit
MODE
A d 0 0 5 0
MODE
# # # # : Address
: ATT setting
– 20 –
# # # # : Address
0 8 A 0
H
DISP
A d 0 8 A 0