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SECTION 5
ELECTRICAL ADJUSTMENTS
5-1.
PARTS REPLACEMENT AND ADJUSTMENT
• Check and adjust the MDM and MBU as follows.
The procedure changes according to the part replaced
• Abbreviation
OP
: Optical pick-up
OWH : Overwrite head
• Temperature compensation offset check
• Laser power check
• Traverse check
• Focus bias check
• C PLAY check
• Self-recording/playback check
Parts Replacement and Repair
NG
Has the OWH been replaced?
NO
OK
NO
NO
NO
Has OP, IC171, IC101, or
IC121 been replaced?
YES
YES
Initial setting of the adjustment value
Has OP or IC171 been replaced?
YES
IOP information recording
(IOP value labeled on OP)
Has IC171 or D101
been replaced?
YES
Temperature compensation offset adjustment
• Laser power adjustment
• Traverse adjustment
• Focus bias adjustment
• Error rate adjustment
• Focus bias check
• Auto gain adjustment
Check the sled and spindle
mechanisms.
Other causes can be suspected.
Содержание MDS-JA20ES - Minidisc Deck
Страница 13: ... 13 ...
Страница 14: ... 14 ...
Страница 43: ...6 7 PRINTED WIRING BOARDS BD SWITCH Section See page 39 for Circuit Boards Location 47 Page 67 ...
Страница 44: ... 48 6 8 SCHEMATIC DIAGRAM BD SWITCH Section Page 69 ...
Страница 45: ...MDS JA20ES 49 50 6 9 PRINTED WIRING BOARD AUDIO Board Component Side See page 39 for Circuit Boards Location ...
Страница 49: ... 57 6 13 PRINTED WIRING BOARD DIGITAL Section See page 39 for Circuit Boards Location ...
Страница 54: ...MDS JA20ES 65 66 6 17 PRINTED WIRING BOARD POWER Board Component Side See page 39 for Circuit Boards Location ...