Servicing Notes - Sony HCD-FL7D Service Manual

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.
SERVICE POSITION
In checking the DSP/MB/MC/VIDEO boards, prepare jig.
SUB trans board
Any board to put
front rear AMP board
regulator board
SP relay board
DSP board
extension cable (J-2501-198-A)
to the MB board (CN204)
and video board (CN701)
MC board
panel (L) board
blue LED board
SECTION 1

SERVICING NOTES

trans board
center SW AMP board
GC board
video board (CN701)
panel (R) board
• MODEL IDENTIFICATION
– Back Panel –
PART No.
MODEL
US model
Canadian model
AEP and UK models
Saudi Arabia model
Singapore model
Mexican model
Korean model
MB board (CN204)
MB board (CN501)
extension cable (J-2501-217-A)
to the MB board (CN501)
and RF board (CN002)
RF board (CN002)
mechanism deck
HCD-FL7D
PART No.
4-240-060-0 []
4-240-060-1
[]
4-240-060-2 []
4-240-060-3
[]
4-240-060-4
[]
4-240-060-5 []
4-240-060-6
[]
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