Panasonic SA-HT892EE Service Manual ▷ View online
Step 4 Remove the optical pickup unit in the arrow direction till
it stops.
it stops.
Step 5 Remove 2 screws.
Step 6 Remove the drive rack.
Step 7 Remove 1 screw.
Step 8 Slide the shaft in the arrow direction.
Step 8 Slide the shaft in the arrow direction.
Step 9 Lift the optical pickup unit with the shaft.
Step 10 Remove the optical pickup unit.
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SA-HT892EE
Step 11 Pull the shaft and the rubber out.
(Assembling the optical pickup unit)
Step 1 Pass the intermediate FPC through the frame hole.
Step 2 Align the guide section of the optical pickup unit with
the rail.
Step 3 Install the shaft top to the holder.
Step 2 Align the guide section of the optical pickup unit with
the rail.
Step 3 Install the shaft top to the holder.
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SA-HT892EE
13 Measurements and Adjustments
13.1. Service Tools and Equipment
Application
Name
Number
Tilt adjustment
DVD test disc
DVDT-S20 [SPG]
TORX screw driver (T6)
Available on sales route. (T6) or
RFKZ0185 [SPG]
RFKZ0185 [SPG]
Others
Grease
RFKXPG641 [SPG]
Confirmation
CD test disc
PVCD-K06 or any other commercially
available disc
available disc
VCD test disc
PVCD-K06 or any other commercially
available disc
available disc
Recovery disc
RFKZD03R005 [SPG]
13.2. Important points in adjustment
13.2.1. Important points in optical adjustment
· Before starting optical adjustment, be sure to take anti-static measures.
· Optical pickup tilt adjustment is needed after replacement of the following components.
1. Optical pickup unit
2. Spindle motor unit
3. Optical pickup peripheral parts
Notes
· Optical pickup tilt adjustment is needed after replacement of the following components.
1. Optical pickup unit
2. Spindle motor unit
3. Optical pickup peripheral parts
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. Optical adjustments cannot be made inside the optical pickup. Adjustment is generally
unnecessary after replacing the traverse unit.
noticeable degradation in picture quality. Optical adjustments cannot be made inside the optical pickup. Adjustment is generally
unnecessary after replacing the traverse unit.
13.2.2. Important points in electrical adjustment
· Follow the adjustment procedures described in this manual.
13.3. Storing and handling of test discs
· 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
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.
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.
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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SA-HT892EE
13.4.1.1. Adjustment procedure
1. While pressing STOP button on the main unit, press "5" on
the remote control unit.
2. Confirm that "J_xxx/yyy_zz" (display1/display2) is shown on
the front display.
For your information:
For your information:
"yyy" and "zz" shown to the right have nothing to do with
the jitter value. "yyy" is the error counter, while "zz" is
the focus drive value.
the jitter value. "yyy" is the error counter, while "zz" is
the focus drive value.
Note:
Jitter value appears on the front display.
3. Play test disc T30 (center periphery).
4. Adjust tangential adjustment screw so that the jitter value is
4. Adjust tangential adjustment screw so that the jitter value is
minimized.
5. Play test disc T30 (center periphery).
6. Adjust tilt adjustment screw 1 so that the jitter value is
6. Adjust tilt adjustment screw 1 so that the jitter value is
minimized.
7. Play test disc T30 (center periphery).
8. Adjust tilt adjustment screw 2 so that the jitter value is
8. Adjust tilt adjustment screw 2 so that the jitter value is
minimized.
9. Repeat adjusting tilt adjustment screws 1 and 2 alternately
until the jitter value is minimized.
13.4.1.2. Important points
1. Make tangential adjustment first, and then make tilt
adjustment.
2. Repeat adjusting two or three times to find the optimum
point.
3. Finish the procedure with tilt adjustment.
Jitter value depends on the model:
1.
1.
If the jitter value changes like B, the optimum point is easy to
find.
find.
2.
If the jitter value changes like A, set the optimum point near the
middle.
middle.
13.4.1.3. Check after adjustment
Play test disc or any other disc to make sure there is no picture
degradation in the inner, middle and outer peripheries, and no
audio skipping. After adjustment is finished, lock each
adjustment screw in position using screw lock.
degradation in the inner, middle and outer peripheries, and no
audio skipping. After adjustment is finished, lock each
adjustment screw in position using screw lock.
13.4.1.4. Procedure for screw lock
1. After adjustment, remove top cover, tray, clamper base and
traverse unit in this sequence.
2. Lay the traverse unit upside down, and fix adjustment screw
with screw lock.
3. After fixing, reassemble traverse unit, clamper base, tray
and top cover.
13.4. Optical adjustment
13.4.1. Optical pickup tilt adjustment
Measurement point
Adjustment point
Mode
Disc
Tangential adjustment screw
Tilt adjustment screw
Tilt adjustment screw
T01 (inner periphery) play
T30 (center periphery)
T43 (outer periphery) play
T30 (center periphery)
T43 (outer periphery) play
DVDT-S20 [SPG]
Measuring equipment
Adjustment value
None (Main unit display for servicing is used.)
Adjust to the minimum jitter value.
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SA-HT892EE
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