HBD-N7100W, HBD-N7100WL, HBD-N8100W, HBD-N9100W, HBD-N9100WL, HBD-N9150W, HBD-N9150WL, HBD-N9900SH - Sony Audio Service Manual (repair manual). Page 4

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.

IMPORTANT  NOTICE  FOR  OPERATION  CHECK
Before performing an operation check on this model, make sure 
you fi rst attach slide door to prevent the laser beam from shining 
directly into the eyes.
Additionally, before disassembling this model, make sure you re-
move the power cord and confi rm that no electricity is fl owing 
through this model.

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)

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.

ADVANCE  PREPARATION  WHEN  CONFIRMING  OP-
ERATION
In order to perform the operation checking, all the units contained 
in this unit are needed.

ABOUT  THE  LENS  CLEANING
Don’t do the lens cleaning with the cotton bud etc. It causes the 
trouble.

RELEASING  THE  DISC  TRAY  LOCK
The disc tray lock function for the antitheft of an demonstration 
disc in the store is equipped.

Releasing Procedure:
1.  Press the [

?/1

] button to turn on the system.

2.  Press the [HOME] button on the remote commander to enter 

the home menu.

3.  Touch the [

x

] sensor, press the [

Z

] button simultaneously and 

hold down until “D. OFF” displayed on the fluorescent indica-
tor tube (around 5 seconds).

Note: When “D. LOCK” is displayed, the disc tray lock is not released by 

turning power on/off with the [?/1] button.

CAPACITOR  ELECTRICAL  DISCHARGE  PROCESSING
When checking the board, the electrical discharge is necessary for 
the electric shock prevention.
Connect the resistor to both ends of respective capacitors.

• Switching 

regulator

 

C201, C207, C402

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