Sharp MD-DR470HS Service Manual page 16

1-bit portable minidisc recorder
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MD-DR470H/MD-DR480H
Servo Pre-automatic Adjustment
A U T O 1
PLAY
A T 1
Adjustment error
A D J . N G
Normal end
A D J . O K
PLAY
A T 2
* 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
preliminary auto adjustment. (Refer to "Change of test mode menus" for the operation method.)
* "
" is the internal processing number, the meanings of the numbers are as follows.
0 2 : ABEF input offset measurement
0 4 : AB input (ABMAXO) level setting
0 5 : Focus ATT tentative setting
0 6 : Pit section EF input level setting
0 7 : COUT level setting for pit section adjustment
0 8 : Sled external periphery move
0 9 : Groove section EF input level setting
1 0 : COUT level setting for groove section adjustment
1 1 : TCRS input level setting
1 2 : Tracking ATT initial setting
1 3 : AB input (LPFABO) level setting
1 4 : Focus ATT initial setting
1 6 : TCRS input offset measurement
* It is necessary for each test mode where servo operation is made to complete the preliminary
adjustment. (Otherwise, "ErADJ." appears.)
* The preliminary adjustment complete state is stored on the EEPROM (protected field).
Servo ATT Auto 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 # # # #
* 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.)
* "
" 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
: Pre-automatic adjustment menu
Adjustment error
: During pre-automatic adjustment
: Pre-adjustment error (adjustment value output)
: Pre-adjustment normal end (adjustment value output)
: During ATT automatic adjustment
: 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)
– 16 –

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