6
DV-49AV
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4
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D
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1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
1.2 WHEN REPLACING DVD DECK
• For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
• Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40
°
C.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373
°
C in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.
Do
N
OT use a soldering iron whose tip temperature cannot be controlled.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:
• Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP100
8
0.3 in dia.
Before removing Pick Up PCB and D
V
D PCB connector, short circuit the position shown in
Fi
g
. 1
using
a soldering iron. If you remove the D
V
D Deck with no soldering, the Laser may be damaged.
WHEN REPLACING DVD DECK
[ Removin
g
the DVD Deck ]
[ Installin
g
the DVD Deck ]
Remove all the soldering on the short circuit position after the connection of Pick Up PCB and D
V
D
PCB connector.
NOTE
Fi
g
. 1
Before your operation, please read “PREPARATIO
N
OF SER
V
ICI
N
G” .
Use the Lead Free solder.
Manual soldering conditions
• Soldering temperature: 320
±
20 °C
• Soldering time: Within 3 seconds
• Soldering combination: Sn-3.0Ag-0.5Cu
When Soldering/Removing of solder, use the draw in equipment over the Pick Up Unit to prevent the
Flux smoke from it.
•
•
•
Short circuit using a
soldering iron.
Pick Up PCB
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513
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Q
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
