HCD-MX700Ni/MX750Ni
4
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 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.
NOTE OF REPLACING THE WIRELESS LAN MODULE
(MOD1)
When replacing the wireless LAN module (MOD1), MAC address
is changed. Print the following explanation, cut it, and hand over it
to the customer with the set, when returning the set that the repair
is completed to the customer.
MAC address of the main unit has been changed by this repair.
When using the MAC address fi ltering function of connection destina-
tion access point equipment, set it again..
CHECKING METHOD OF NETWORK OPERATION
It is necessary to check the network operation, when replacing the
wireless LAN module (MOD1). Check the operation of wireless
and wired LAN, according to the following method.
1. Checking Method of Wireless LAN Operation
Check that access point is recognized surely.
Necessary Equipment:
Wireless access point with router function (AP)
Procedure:
1. Press the [FUNCTION] button to select the Home Network
function.
2. Press the [ +
v
]/[
V
–] buttons to select “Network,” then
press the [ENTER] button.
3. Press the [ +
v
]/[
V
–] buttons to select “Settings,” then
press the [ENTER] button.
4. Press the [ +
v
]/[
V
–] buttons to select “Wireless LAN
Settings,” then press the [ENTER] button.
5. Press the [ +
v
]/[
V
–] buttons to select “Access Point
Scan,,” then press the [ENTER] button.
6. The system starts searching for access points, and displays a
list of up to 20 available network name (SSID).
7. Check that access point (SSID) is displayed on the searching
result.
Note: Refer to the instruction manual about details of the setting method.
2. Checking method of wired LAN operation
Check that access point is recognized surely.
Procedure:
1. Connect the main unit to the router or the hub, etc. with the
LAN cable.
2. Press the [FUNCTION] button to select the Home Network
function.
3. Press the [ +
v
]/[
V
–] buttons to select “Network,” then
press the [ENTER] button.
4. Press the [ +
v
]/[
V
–] buttons to select “Settings,” then
press the [ENTER] button.
5. Press the [ +
v
]/[
V
–] buttons to select “Wired LAN Set-
tings,” then press the [ENTER] button.
Note: If “Change Setting?” appears, select “OK,” then press the [ENTER]
button.
6. On the IP setting, press the [ +
v
]/[
V
–] buttons to select
“Auto,” then press the [ENTER] button.
7. On the proxy setting, press the [
+
v
]/[
V
–] buttons to
select “Do Not Use,” then press the [ENTER] button.
8. Press the [ +
v
]/[
V
–] buttons to select “OK,” then press
the [ENTER] button.
9. Perform the server settings.
10. Press the [OPTIONS] buttons to select “Network,” then press
the [ENTER] button.
11. Press the [OPTIONS] buttons to select “Information,” then
press the [ENTER] button.
12. Check that IP address can be acquired.
Note: Refer to the instruction manual about details of the setting method.
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 the power on.
2. Press two buttons of [
x
] and [
Z
] for 5 seconds.
3. The message “UNLOCKED” is displayed on the liquid crystal
element and the disc tray is unlocked.
Note: When “LOCKED”is displayed, the disc tray lock is not released by
turning power on/off with the [
?/1
] button.
NOTE OF REPLACING THE MS-203 BOARD
When the MS-203 board is damaged, exchange the entire
CDM85 (CD) ASSY.
NOTE OF REPLACING THE CN1003 ON THE NET
BOARD
CN1003 on the NET board cannot exchange with single. When
these parts are damaged, exchange the entire mounted board.
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