Servicing Notes - Sony HCD-FL3 Service Manual

HCD-FL3
Ver 1.2
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, 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.
• RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure :
Press two buttons of (CD) and
Z
five seconds. The message "UNLOCKED" is displayed and the
tray is unlocked.
Note: When "LOCKED" is displayed, the tray lock is not released by
turning power on/off with the
SERVICE POSITION
In checking the DSP/MC board, prepare jig (extension cable J-
2501-208-A: 1.25 mm Pitch, 21 cores, Length 370 mm).
Any board to put
DSP board
MC board (CN106)
4
SECTION 1

SERVICING NOTES

[GROOVE]
simultaneously for
[I/ ]
button.
1
Connect jig (extension cable J-2501-208-A)
BD board (CN101)
to the MC board (CN106) and BD board (CN101).
• MODEL IDENTIFICATION
– Back Panel –
PART No.
MODEL
Singapore model
120 V AC area in E model
Mexican model
Chilean and Peruvian models
Argentina model
Australian model
MC board
PART No.
4-239-008-0 []
4-239-008-2
[]
4-239-008-3 []
4-239-008-4
[]
4-239-008-5
[]
4-239-008-6 []