Panasonic DVD-LS70EB / DVD-LS70EE / DVD-LS70EG / DVD-LS92EB / DVD-LS92EE / DVD-LS92EG Service Manual ▷ View online
13
8 HANDLING PRECAUTIONS FOR TRAVERSE DECK
The laser diode in the optical pickup may break down due to
potential difference caused by static electricity of clothes or
human body.
So be careful of electrostatic break down during repair of the
optical pickup.
potential difference caused by static electricity of clothes or
human body.
So be careful of electrostatic break down during repair of the
optical pickup.
8.1.
Handling of optical pickup
1. Do not subject the optical pickup to static electricity as it is
extremely sensitive to electrical shock.
2. To prevent the breakdown of the laser diode, an antistatic
shorting pin is inserted into the flexible board (FPC
Board).
When removing or connecting the short pin, finish the job
in as short times as possible.
Board).
When removing or connecting the short pin, finish the job
in as short times as possible.
3. Be careful not to apply excessive stress to the flexible
board (FPC Board).
4. Do not turn the variable resistor (Laser power adjust-
ment).
It has already been adjusted.
8.2.
Grounding for electrostatic breakdown prevention
1. Human body grounding
Use the antistatic wrist strap to discharge the static elec-
tricity from your body.
tricity from your body.
2. Work table grounding
Put a conductive material (sheet) or steel sheet on the
area where the optical pickup is placed and ground the
sheet.
Caution
area where the optical pickup is placed and ground the
sheet.
Caution
The static electricity of your clothes will not be
grounded through the wrist strap. So take care not to
let your clothes touch the optical pickup.
grounded through the wrist strap. So take care not to
let your clothes touch the optical pickup.
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9 DISASSEMBLY, REASSEMBLY AND SERVICE POSITION
15
9.1.
Disassembly
“Caution to be taken when disassembling and reassembling the unit”
• Disconnect the flexible cable from the main P.C.B. before disassembling the monitor assembly.
• Do not apply undue force on the flexible cable. There is a danger of breaking the cable.
• Do not touch the terminals of the flexible cable with your bare hands.
• Disassembly and reassembly should be performed in the specified order.
• Hold the LCD panel by its edges.
• Do not press the LCD panel strongly.
• Do not apply undue force on the flexible cable. There is a danger of breaking the cable.
• Do not touch the terminals of the flexible cable with your bare hands.
• Disassembly and reassembly should be performed in the specified order.
• Hold the LCD panel by its edges.
• Do not press the LCD panel strongly.
* If the LCD panel was pressed strongly by chance during disassembly or reassembly, leave it for about 10 seconds before ener-
gizing the panel.
gizing the panel.
• To clean the LCD panel, wipe with a soft colth, such as gauze, saturated with isopropyl alcohol.
* Do not wipe the LCD panel with a dry gauze.
* Never use water for cleaning the LCD panel.
* Never use the following solvents:
(ketone: acetone and others)
(aromatic compounds: xylene, toluene)
(halogenides)
* Never use water for cleaning the LCD panel.
* Never use the following solvents:
(ketone: acetone and others)
(aromatic compounds: xylene, toluene)
(halogenides)
* If the water splashes on the LCD panel, wipe it away immediately.
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9.2.
P.C.B. location
9.3.
Main cabinet of the unit
Removing battery pack
Release the lock lever and remove the battery pack in the
direction of the arrow.
direction of the arrow.
1. Remove the 14 screws from the bottom of the unit.
2. Release the latches and remove the bottom cabinet.
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