Panasonic DVD-LX97EE / DVD-LX97GCS Service Manual ▷ View online
10 SERVICE PRECAUTIONS
10.1. Recovery after the dvd player is repaired
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When FROM or main P.C.B. is replaced, carry out the recovery processing to optimize the drive.
Playback the recovery disk to process the recovery automatically.
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Recovery disc (Product number: RFKZD03R005)
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Performing recovery
1. Load the recovery disc RFKZD03R005 on to the player and run it.
2. Recovery is performed automatically. When it is finished, a message appears on the screen.
3. Remove the recovery disc.
4. Turn off the power.
Note:
This unit requires no initialization process carried out after the traditional DVD players were repaired.
When the recovery measures are taken, the customer setting will return to the factory setting as same as the procedure
described in item of "Initialization" in 9.6. is carried out. Write down the contents of the setting before recovery processing, and
reset the player.
described in item of "Initialization" in 9.6. is carried out. Write down the contents of the setting before recovery processing, and
reset the player.
10.2. Firmware version-up of the DVD player
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The firmware of the DVD player may be renewed to improve the quality including operationability and playerbility to the
substandard discs.processing to optimize the drive.
substandard discs.processing to optimize the drive.
The recovery disc has also firmware version-up.
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After version-up, recovery processing is executed automatically.
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Part number of the recovery disc for version-up will be noticed when it is supplied.
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Updating firmware
1. Load the recovery disc that is supplied to the player and run it.
2. Firmware version of the player is automatically checked. Appropriate message appears whenever necessary.
3. Using remote controller´s cursor key, select whether version updating is to be done or not. (Selection of Yes/No)
4. a. If Yes is selected, version updating is performed.
b. If No is selected, only recovery is performed.
5. a. When updating is finished, remove the disc according to the message appearing on the screen.
b. Remove the disc according to the message appearing on the screen.
6. Turn off the power.
Note:
If the AC power supply is shut out during version-up due to a power failure, the version-up is improperly carried out.
In such a case, replace the FROM and carry out the version-up again.
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DVD-LX97EE / DVD-LX97GCS
11 ADJUSTMENT PROCEDURES
<Caution>
Be sure to take static electricity countermeasures before adjusting the optical system. Adjust the optical systems according to
the prescribed procedure.
the prescribed procedure.
11.1. Service Tools and Equipment
Application
Name
Number
Tilt adjustment
DVD test disc
DVDT-S15AS or DVDT-S01
Inspection
Extension cable
(Traverse ass’y to main P.C.B.)
(Traverse ass’y to main P.C.B.)
RFKZ0104 (30Pin)
Extension cable
(Traverse ass’y to main P.C.B.)
(Traverse ass’y to main P.C.B.)
RFKZ0303 (18Pin)
Tilt adj. jig
RFKZ0118
Others
Screw lock
RZZ0L01
Grease
JGS0101
Lubricating oil
RFKXGUD24
Confirmation
CD test disc
PVCD-K06
or any other commercially available disc
or any other commercially available disc
VCD test disc
PVCD-K06
or any other commercially available disc
or any other commercially available disc
Recovery disc
RFKZD03R005
11.2. Important points in adjustment
11.2.1. Important points in optical adjustment
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Optical pickup tilt adjustment is needed after replacement of the following components.
1. Optical pickup unit
2. Disc motor
3. Traverse motor
4. Optical pickup peripheral parts (such as rail)
Notes
Adjustment is generally unnecessary after replacing other parts of the traverse unit. However, make adjustment if there is
a noticeable degradation in picture quality.
a noticeable degradation in picture quality.
Optical adjustments cannot be made inside the optical pickup.
11.2.2. Important points in electrical adjustment
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Follow the adjustment procedures described in this Manual.
11.3. Storing and Handling Test Discs
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Surface precision is vital for DVD test discs. Be sure to store and handle them carefully.
1.
Do not place discs directly onto the workbench, etc., after use.
2.
Handle 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 conditioners.
in a cool place where they are not exposed to direct sunlight or air from air conditioners.
3.
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.
new test disc to make optical adjustments.
4.
If adjustment is done using a warped disc, the adjustment will be incorrect and some discs will not be playable.
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DVD-LX97EE / DVD-LX97GCS
11.4. Optical adjustment
11.4.1. Optical pick gate adjustment
Measurement point
Adjustment point
Mode
Disc
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Tangential adjustment screw
(Adjustment screw A)
Radial tilt adjustment screw
(Adjustment screw B)
(Adjustment screw A)
Radial tilt adjustment screw
(Adjustment screw B)
Tracking servo "ON"
Tracking servo "ON"
DVDT-S01/S15AS
Measuring apparatus
Adjustment value
None (Use the service indication on the main unit)
Adjust the jitter value to the minimum level.
Remove the solder shorts before trying to make the adjustment.
11.4.1.1. Preparations
1. Connect the main P.C.B. to the traverse ass’y with the extension cable.
2. Install the traverse ass’y to the tilt adjustment jig with three screws and three washers.
Caution
Remove the rubber cushion of the traverse ass’y.
3. Install the traverse ass’y to the disc.
Caution
Make sure the disc is installed on the disc motor securely.
4. Disassemble the Main P.C.B., Operation P.C.B., Inverter P.C.B. and LCD panel as shown in figure below.
5. The disc cannot be played back with the Disc cover attached. Press and hold down the S5201 and S5202 (Secure with cellulose
tape)
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DVD-LX97EE / DVD-LX97GCS
11.4.1.2. Adjustment
1. Play back the disc (DVDT-S01/S15AS) and make sure the RF signal is outputted.
2. Play back the areas within a radius of 40 ± 1 mm of the disc (middle circumference).
3. Turn the adjustment screw C to minimize the jitter value in the radial direction.
(*Once turn the screw to the full position and then back off. You should finish tightening in the tightening direction.)
4. Turn the adjustment screw A to minimize the jitter value in the tangential direction.
(*Once turn the screw to the full position and then back off. You should finish tightening in the tightening direction.)
5. DISC height measurement (Measure the middle of the deflection of the disc and motor surface.)
*If the measured height is out of range, adjust to the specified value using the adjustment screws A, B, and C (by the same
angle).
angle).
11.4.1.3. Checking after adjustment
Play back the test disc and ordinary discs to make sure that there is not any deterioration of image quality or missing of sound at
the inner, middle, and outer circumferences.
the inner, middle, and outer circumferences.
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DVD-LX97EE / DVD-LX97GCS
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