HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
5
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
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.
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
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.
RELEASING THE 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 [FUNCTION] button repeatedly to select “DVD”.
3. While pressing the [
s
] button, press the [
A
] button until “UN-
LOCKED” displayed on the fl uorescent indicator tube (around
5 seconds).
Note: When “LOCKED” is displayed, the tray lock is not released by
turning power on/off with the [
?
/
1
] button.
RELEASING THE DEMO PLAY LOCK
Releasing Procedure:
1. Press the [
?/1
] button to turn on the system.
2. Press the [FUNCTION] button repeatedly to select “DVD”.
3. While pressing the [
s
] button, press the [
H
] button until
“DEMO OFF” displayed on the fl uorescent indicator tube
(around 5 seconds).
Note: When “DEMO ON” is displayed, the set is not possible to turn off
the system.
NOTE OF REPLACING THE IC1103 ON THE MAIN
BOARD
IC1103 on the MAIN board cannot exchange with single. When
IC1103 on the MAIN board is damaged, exchange the entire
mounted board.
PART NO.
CENTER SUBWOOFER
DIGITAL IN
P
B/CB PR/CR AUDIO INYRL
COAXIAL OPTICAL
FRONT R FRONT L SUR R SUR L
SPEAKER
COMPONENT VIDEO OUT
TV/VIDEO
TV/VIDEO
SPEAKER
EZW-T100
COAXIAL 75
AM
FM
DMPORT
ANTENNA
HDMI OUT
VIDEO
OUT
DC5V
0.7A MAX
Model Part No.
HDX576WF: Canadian model
3-277-790-0[]
HDX576WF: US model
3-278-578-3[]
HDX277WC
3-278-578-4[]
HDX675
3-278-578-5[]
HDX275: US model
3-278-578-7[]
HDX275: Australian model
3-278-578-8[]
HDX275: 240V AC area in E model
3-278-579-0[]
HDX475
3-278-579-3[]
HDX279W
3-278-579-4[]
MODEL IDENTIFICATION
Ver. 1.1
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
To Next Page
Loading...
Need help?
General
