BMZ-K33, CX-BK33 - Sony Audio Service Manual (repair manual). Page 5

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5
CX-BK33
PART No.
SECTION  1
SERVICING  NOTES
MODEL  IDENTIFICATION
– Rear Cover –
MODEL
PART No.
Chilean and Peruvian models
4-254-166-1[]
AEP and UK models
4-254-166-2[]
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER  DIODE  AND  FOCUS  SEARCH  OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveforms is output three times.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
SERVICE  POSITION
– Tape Mechanism Deck –
Connect the wire (flat type) (8 core)
to the MAIN board (CN903) and 
the mechanism deck.
Connect the wire (flat type) (11 core)
to the DECK board (CN008) and the MAIN board (CN009).
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