Servicing Notes - Sony HD-X1 Service Manual

HCD-X1
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 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.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
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 and
Z
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
I/1
NOTE OF REPLACING THE DMB10 BOARD
New part of EEPROM (IC103) on the DMB10 board cannot be
used. Therefore, if the mounted DMB10 board is replaced, exchange
new EEPROM with that used before the replacement.
RELEASING THE DEMO PLAY LOCK
Releasing Procedure:
Press two buttons of and
N
The message "DEMO OFF".
NOTE OF HANDLING THE MIB01 BOARD (Part No. A-
1124-106-A)
When the MIB01 board is replaced by a repair for a fee, throw
away the MIB01 board after obtaining consent of not returning of
the MIB01 board to the customer. When throwing away the MIB01
6
SECTION 1

SERVICING NOTES

simultaneously for five seconds.
x
button.
.
x
board, be sure to throw away after destroying IC602 physically with
the hammer etc.
• MODEL IDENTIFICATION
– Back Panel –
PART No.
MODEL
US and Canadian model
AEP and UK model
Russian model
Singapore model
S-FORCE FRONT SURROUND OPERATION CHECK
When complaint by the effect of the sound field, check as follows
and confirm abnormality is not found in the set.
Procedure:
PART No.
2-588-835-0[]
2-588-835-1[]
2-588-835-2[]
2-588-835-4[]