Panasonic SA-HT520EE Service Manual ▷ View online
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SA-HT520EE
17 Service Position
17.1. Checking the Main PCB and Scart Terminal PCB
Below are the neccessary steps required for checking of Main and Scart Terminal P.C.B..
1. Disassembly of Top Cabinet.
2. Disassembly of Front Panel.
3. Disassembly of Rear Panel.
4. Disassembly of Main P.C.B..
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SA-HT520EE
17.2. Checking the Main, Panel P.C.B., Scart Terminal P.C.B. and Tact
Switch P.C.B.
Below are the neccessary steps required for cheking of Panel and Tact Switch P.C.B..
1. Disassembly of Top Cabinet.
2. Disassembly of Front Panel.
3. Disassembly of Tact Switch and Panel P.C.B..
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SA-HT520EE
18 Adjustment Procedure
18.1. Required Tools and Equipment
18.1.1. Usage Equipment
Application
Name
Number
Tilt adjustment
DVD test disc
DVDT-S15 or DVDT-S01
TORX screw driver (T6)
Available on sales route. (T6) or
RFKZ0185
RFKZ0185
Others
Hanari
VFK1784
Grease
RFKXPG641
Drysurf
RFKXGUD24
Confirmation
CD test disc
PVCD-K06
and
any
other
commercially available disc
Recovery disc
RFKZD03R005
18.1.2. Important points in adjustment
18.1.2.1. Important points in Optical Adjustment
·
Before starting optical system adjustment, be sure to take anti-static measures.
·
Optical adjustment (optical pickup tilt adjustment) is required after following parts are replaced:
1. Optical pickup unit.
2. Spindle motor assembly unit.
3. Optical pickup peripherals (such as a rail)
Note:
Optical adjustment is not necessary after replacement of other parts inside the traverse unit. However, may require when picture
deterioration is detected. Optical adjustments cannot be applied to the inside of optical pickup. When a traverse unit is replaced,
the adjustment is not necessary.
deterioration is detected. Optical adjustments cannot be applied to the inside of optical pickup. When a traverse unit is replaced,
the adjustment is not necessary.
18.1.3. Storing and Handling Test Discs
Surface precision is vital for DVD test discs. Be sure to store and handle them carefully.
·
Do not place discs directly onto the workbench, etc, after use.
·
Handle the discs carefully in order to maintain their flatness. Place them into their case after use and store them vertically. Store
discs in a cool place where they are not exposed to direct sunlight or air from air conditioned.
discs in a cool place where they are not exposed to direct sunlight or air from air conditioned.
·
Accurate adjustment will not be possible if the disc is warped when placed on a surface made of glass, etc. If this happens, use
a new test disc to make optical adjustments.
a new test disc to make optical adjustments.
·
If adjustment is done using a warped disc, the adjustment will be incorrect and some discs will not be playable.
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SA-HT520EE
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