Servicing Notes - Sony HCD-SLK20D Service Manual

HCD-SLK10D/SLK20D
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
The laser beam on this model is concentrated so as to be focused
on the disc refl ective surface by the objective lens in the optical
pickup 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 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.
RELEASING THE DISC SLOT LOCK
The disc slot lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure:
?/1
1. Press the [ ] button to turn on the system.
2. Touch the [HOME] sensor.
M m <
3. Touch the [ ], [ ], [ ] and [
DVD", and touch the [ENTER] sensor.
x
4. Touch the [ ] sensor and press the [
and hold for more than fi ve seconds.
5. The message "UNLOCKED" is displayed on the liquid crystal
display module and the disc slot is unlocked.
Note: When "LOCKED" is displayed, the disc slot lock is not released by
turning power on/off with the [ ?/1 ] button.
NOTE THE IC102 AND IC103 ON THE DMB19 BOARD
REPLACING
IC102 and IC103 on the DMB19 board cannot exchange with
single. When these parts are damaged, exchange the complete
mounted board.
4
SECTION 1

SERVICING NOTES

,
] sensors to select the "CD/
Z
] button simultaneously,
NOTE THE CN406 ON THE DISPLAY BOARD RE-
PLACING
CN406 on the DISPLAY board cannot exchange with single.
When this part is damaged, exchange the complete mounted board.
NOTE FOR REPLACEMENT OF THE MS-214 BOARD
When the MS-214 board is defective, exchange the entire CDM86
(S) ASSY.
NOTE FOR REPLACEMENT OF THE TOUCH PANEL
BOARD
When the TOUCH PANEL board is defective, exchange the entire
mounted board.
MODEL IDENTIFICATION
– Rear view –
Model
Number
Label
Model
HCD-SLK20D: 120V AC area in E,
Chilean and Peruvian models
HCD-SLK20D: Mexican model
HCD-SLK20D: Indian model
HCD-SLK10D: Brazilian model
HCD-SLK10D: Singapore model
HCD-SLK10D: Thai model
HCD-SLK10D: Chinese model
HCD-SLK20D: Saudi Arabia model
CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When checking the board, the electrical discharge is necessary for
the electric shock prevention.
Connect the resistors referring to the fi gure below.
• Switching regulator (C201, C202)
Both ends of respective capacitors.
– Switching Regulator (Conductor Side) –
800 :/2 W
C201
C202
800 :/2 W
Part No.
4-281-621-0[]
4-281-622-0[]
4-281-624-0[]
4-281-626-0[]
4-281-627-0[]
4-281-628-0[]
4-281-629-0[]
4-289-306-0[]
T101