Servicing Notes - Sony CDX-GT57UPW Manual Del Usuario

CDX-GT57UPW/GT62UMI/GT570UE/GT570UI/GT570UP/GT574UI/GT620UI/GT626UI
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 fl exible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
Never look into the laser diode emission from right above when
checking it for adjustment. It is feared that you will lose your sight.
If the optical pick-up block is defective, please replace the whole
optical pick-up block.
Never turn the semi-fi xed resistor located at the side of optical
pick-up block.
semi-fixed resistor
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 viscous (sticky, less prone to fl ow)
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.
SECTION 1

SERVICING NOTES

REPLACING THE LITHIUM BATTERY OF
THE REMOTE COMMANDER
(CDX-GT57UPW/GT62UMI/GT570UP/
GT620UI/GT626UI only)
When the battery becomes weak, the range
of the remote commander becomes shorter.
Replace the battery with a new CR2025
lithium battery. Use of any other battery
may present a risk of fire or explosion.
Notes on the lithium battery
Keep the lithium battery out of the reach of
children. Should the battery be swallowed,
immediately consult a doctor.
optical pick-up
Wipe the battery with a dry cloth to assure a
good contact.
Be sure to observe the correct polarity when
installing the battery.
Do not hold the battery with metallic tweezers,
otherwise a short-circuit may occur.
WARNING
Battery may explode if mistreated.
Do not recharge, disassemble, or dispose
of in fire.
CLEANING THE CONNECTORS
The unit may not function properly if the connectors
between the unit and the front panel are not clean. In order
to prevent this, detach the front panel and clean the
connectors with a cotton swab. Do not apply too much force.
Otherwise, the connectors may be damaged.
Notes
For safety, turn off the ignition before cleaning the connectors,
and remove the key from the ignition switch.
Never touch the connectors directly with your fingers or with
any metal device.
Ver. 1.1
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