Sony MEX-BT3600U Manuale di servizio - Pagina 4

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MEX-BT3600U

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostat-

ic 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

EXTENSION CABLE AND SERVICE POSITION

When repairing or servicing this set, connect the jig (extension

cable) as shown below.

•

Connect the MAIN board (CN350) and the SERVO board

(CN401) with the extension cable (Part No. J-2502-076-1).

MAIN BOARD

CN350

SECTION 1

SERVICING NOTES

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

Unleaded solder has the following characteristics.

•

optical pick-up

TEST DISCS

Use following TEST DISC when this set conﬁ rms the operation

and checks it.

3-702-101-01

4-225-203-01

J-2502-063-1

J-2502-076-1

the lead free mark due to their particular size)

: LEAD FREE MARK

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.

YEDS-18 (for CD)

PATD-012 (for CD)

TCD-R082LMT (for CD-R)

SERVO BOARD

CN401