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(6) Spindle CLV NG
* When the spindle cannot be shifted to CLV Servo, does not become "H" between IC301 "69"
and IC201"37".
* IC201 Is signal output from CN103 "1" (RFOP)?
* IC201 Is signal output from CN103 "11" (DSLIP)?
* IC201 Is signal output from CN103 "6" to "9" (binary-coded clock and data)?
* IC201 Is "39" (/TRON) at "L" level ?
* IC301 "74" to "76" --- Is signal output to IC201 "24", "25", "28" (In case of only CD).
(Serial communication of rotation information)
* Spindle motor driver is defective.
Even when one of the three phases is defective, item (1) may be passed.
--- Check the second item in (1) above.
* C260 to C263 Defective soldering
If noise eliminating capacitors are not properly soldered, noise may ride on the waveform.
* Besides, the undermentioned cause is thought though specific of the cause is difficult because various
factors are thought.
Mechanism is defective.(jitter)
IC101, IC201.
* Besides, the undermentioned cause is thought though specific of the cause is difficult because various
factors are thought.
Mechanism is defective. (jitter)
IC201, IC301, IC401.
The disc is dirty or the wound has adhered.
(7) Address read NG
(8) Between layers jump NG (double-layer disc only)
* When the focus flight is generated when jumps between layers.
Because all adjustments for L1 layer must be successful, this error may rarely be due to a
circuit defect.
* Crosstalk might occur from tracking to focus system. (See (11) ) --- Replace the mechanical unit.
* Driver surroundings.
* Defect of constant and IC.
* For double-layer discs, after checking CLV on layer L1, jumps to layer L0 after mode changes to FG.
Then tracking is turned off, and adjustments are executed from the focus position coarse adjustment
in order.
* When the jump between layers is done on the single-layer disk, the disk distinction error is thought.
--- The laser power is low (RF level is confirmed by CN102 "1" (RFOP)).
--- AS1, AS2, REFNV Is the signal sent to between IC101 and IC201 ?
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Содержание RDV-985
Страница 2: ...Appearance All manuals and user guides at all guides com ...
Страница 22: ...Meno All manuals and user guides at all guides com ...
Страница 24: ...I RDV 985 RDV 985 to Block C to Block B Block A k A All manuals and user guides at all guides com ...
Страница 25: ...RDV 985 to Block A to Block D Block B k B All manuals and user guides at all guides com ...
Страница 26: ...RDV 985 to Block D to Block A Block C All manuals and user guides at all guides com a l l g u i d e s c o m ...
Страница 27: ...RDV 985 DIGTAL DATA SIGNAL to Block C to Block B Block D All manuals and user guides at all guides com ...
Страница 29: ...RDV 985 Display VSS All manuals and user guides at all guides com ...
Страница 32: ...RDV 985 RDV 985 CPU AUDIO SIGNAL All manuals and user guides at all guides com ...
Страница 33: ...RDV 985 Connection All manuals and user guides at all guides com ...
Страница 34: ...Display board Power supply board Printed circuit board RDV 985 All manuals and user guides at all guides com ...
Страница 35: ...RDV 985 CPU Video Jack board S601 NTSC PAL SW All manuals and user guides at all guides com ...