Panasonic DVDRV-31 Service manual

PANASONIC

DVD UPDATE 2001

Based on the model DVD-RV31 Rev 07/01

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Table of Contents

Page 1 ……………….. Cover
Page 2 ……………….. Table of Contents
Page 3 ……………….. 2001 Model Features
Page 5 ……………….. 2001 DVD Model List
Page 6 ……………….. Specifications
Page 7 ……………….. Sales Lock / DVD Locale Number
Page 8 ……………….. Self-Diagnosis 2001 to 2000 Comparison
Page 9 ……………….. Tray Front Removal
Page 11 ……………….. Optical Pick-Up Self-Diagnosis & Replacement Procedure
Page 12 ……………….. Disc Stabilizer / Tilt Adjustment
Page 14 ……………….. Power Supply Primary
Page 15 ……………….. Power Supply Secondary
Page 17 ……………….. Optical Pick-Up Assembly
Page 18 ……………….. Laser Power Control Circuit
Page 19 ……………….. Focus Servo Circuit
Page 20 ……………….. Tracking Servo Circuit
Page 21 ……………….. Traverse Servo and Loading Motor Circuit
Page 23 ……………….. Spindle Servo Circuit
Page 25 ……………….. Video Block Diagram
Page 26 ……………….. Audio Block Diagram
Page 27 ……………….. Flash ROM Upgrades
Page 29 ……………….. Service Positions
Page 30 ……………….. Service Tools & Equipment
Page 31 ……………….. Service Mode Table
Page 33 ……………….. Laser & Spindle Operation Times
Page 34 ……………….. Error Codes
Page 35 ……………….. Servo Process Flow
Page 36 ……………….. Servo Process Display Mode / ADSC Internal RAM Data Display

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2001 MODEL SPECIAL FEATURES
A, B, C, D Features for Enhanced Theater Experience

Our A, B, C, D functions stand for Advanced Surround (V.S.S.), Bass Plus, Cinema Mode, and Dialog
Enhancer - four essential features to enhancing the theater experience. For easy control of image and audio,
these functions are grouped in a single location on the front panel of most of our DVD players. The One Touch
Memory function on the DVD-RV31K/RV31S/RV41/RP56 even lets you store your function settings for instant
recall at the push of a button.

(A, B, C, D available on the DVD-RV31K, DVD-RV31S, DVD-RP56, and DVD-CV51. Bass Plus function not available
on the DVD-RV41 and DVD-RV45K)

• Advanced Surround (V.S.S.)
Advanced V.S.S. lets you enjoy the thrilling sound of Dolby Digital® 5.1 channel discs without
an elaborate home theater system. With Advanced V.S.S, a surround sound effect is
simulated using only the front two speakers*.
*This effect also works with Dolby Digital 2-channel discs. "Dolby," "Dolby Pro Logic" and "Dolby Digital"

are trademarks of Dolby Laboratories Licensing Corporation.

• Bass Plus
By connecting an optional subwoofer to your DVD player, you can enjoy enhanced bass
sound. When watching a Dolby Digital 5.1-channel disc, the bass tones of the "0.1" channel
and the low frequency of other channels are sent to the subwoofer output. This results in clear
bass tones for a powerful and realistic ambiance.

• Cinema Mode
Cinema mode combines brightness control with picture noise canceling to provide better
picture quality in certain viewing conditions. It lessens glare, giving you colors that are more
cinema-like and picture resolution that is gentler to the eyes. Cinema mode also improves the
visibility of details in dark scenes by automatically adjusting picture contrast, and helps to
suppress color smearing, as well.

• Dialogue Enhancer
Most of the movie dialogue recorded in surround sound formats (either Dolby Digital®, DTS®*
or Dolby Pro Logic®) is heard through the center channel speaker. At times, dialogue can be
overwhelmed by part icularly loud sounds emanating from the other speakers in your surround
sound system. The dialogue enhancer increases the center channel volume (relative to other
channels), making movie dialogue easier to hear and understand.

* "DTS" and "DTS Digital Surround" are trademarks of Digital Theater Systems, Inc.

Disc Stabilizer
Conventional DVD players have a "servo," which helps them to properly play warped discs. Although this
feature is generally effective, severely warped discs can be unplayable using this feature alone. Our newly
developed Disc Stabilizer applies corrective pressure at the outer edge of DVD discs to minimize overall
warpage for improved disc playability. The stabilizer touches the DVD disc only at the disc's innermost and
outermost non-signal peripheries, using non-woven material to prevent damaging the surface.
(Not available on the DVD-RV45K)

CD-R/RW/MP3 Playback Capability
For added home entertainment value, most of our DVD-Video home players are equipped to play back your
CD-R/RW* and MP3** recordings.

(Not available on the DVD-RV45K)
Note: For CD-R/RW playback on these models the discs must be one session and the session must be closed.
* For CD-DA format audio CD-R and CD-RW discs. May not be able to play some CD-R or CD-RW discs due to the
condition of the recording.
** For contents recorded on CD-R/RW media from CDs for your perso nal use. Playability may vary depending on contents
and discs.

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Progressive Scanning
Progressive scanning is the key to the sharpest picture quality the DVD-Video format has to offer. Otherwise
known as 480P (P = Progressive), progressive scanning creates a picture signal with double the scan lines of
a conventional interlaced picture, 480I (I = Interlaced), to create a noticeably sharper image. The 480P image
offers higher picture resolution and eliminates virtually all motion artifacts. Even on large screens, the
progressive-scan lines are barely noticeable and picture flickering is greatly reduced, so you can really enjoy
extended viewing.

(Available on the DVD-RP56)

54MHz 10-bit Video D/A Converter
This D/A converter using 54MHz oversampling helps bring out the amazing picture quality offered by our
progressive-scan DVD players. By processing the DVD video signal at four times the original 13.5MHz rate,
this technology provides vivid and finely textured image reproduction. To provide a truly magnificent picture for
the DVD-RP56, the recorded 8-bit DVD image data receives 10-bit processing for faithful reproduction of
delicate signal details.

(Available on the DVD-RP56)

Twin Laser Pick-Up for DVD/CD Playback
Twin Laser Pick-Up uses one objective lens with two laser units that have different wavelengths optimized for
playing DVDs and CDs (including CD-R/RW discs). The integrated design of the Twin Laser Pick-Up's DVD
unit reduces noise pickup by using an OEIC (optical electric IC) with a built-in I/V amp. This highly sensitive
state-of-the-art optical pick-up is made possible by Panasonic's advanced optical device technology.

(Not available on the DVD-RV45K)

On-Screen Menu Icons
Thanks to a new screen design and remote control cursor display, our new DV D players have a redesigned,
easy-to-use interface. The cursor alone can be used to make all changes on the three menu bars for disc,
player, and scanning information. And you can even move the bars around so they don't get in the way when
viewing a playback picture.

(Not available on the DVD-RV45K)

Built-in Dolby Digital® 5.1ch Surround Decoder with Speaker Setting
A built-in Dolby Digital® Decoder eliminates the need for an external decoder. When you play DVD movies
encoded with Dolby Digital soundtrac ks, the decoder processes all six channels of audio information (left front,
right front, center, left -surround, right-surround and low-frequency effects). It also allows you to control speaker
configuration, and with the right audio components, lets you enjoy the amazing fidelity of discrete 5.1 channel
surround sound.

* "Dolby," "Dolby Pro Logic" and "Dolby Digital" are trademarks of Dolby Laboratories Licensing Corporation.
(Available on the DVD-RV45K, DVD-RV41)

Front-Loading, 5-disc Rotary Design
The DVD-CV51 holds up to five discs at once, for super convenience in virtually any digital format. The front ­loading rotary carousel lets you change any one of the four non-playing discs without disturbing what you're
watching or listening to. The changer's front panel LED lets you easily see the location of loaded discs and
tells you which disc is playing.

(Available on the DVD-CV51)

Karaoke Function
With the DVD-RV45K karaoke function you and your friends can have fun singing along to your favorite songs.
Two microphone inputs allow people to sing a song together. You can also control the guide melody with three
settings (on/off/enhanced), depending on how much help you need in singing along. Digital echo, digital key
control (13 steps), and bass boost also help to enhance the karaoke experience.

(Available on the DVD-RV45K)

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Discrete Component Video Out
All of our DVD players offer component video out, a picture-enhancing advancement in DVD-Video technology.
It keeps the black and white, red, and blue signals of the video image intact (and separate) during
transmission, maintaining incredibly high picture quality. In other words, you get images with higher resolution
and more accurate colors than conventional DVD players. Plus, the discrete video out terminals also let you
transmit digital video to compatible video equipment, or connect your DVD-Video player to more than one
monitor at a time.

Energy Star®
Panasonic DVD-Video players meet the Energy Star® guidelines for energy efficiency. They have low stand-by
power consumption, which cuts power usage by a significant amount.

2001 MODEL LIST

DVD PLAYERS

DVD-RV31(K)(S) DVD Video, Video CD, CD
DVD-RV41 DVD Video, Video CD, CD
DVD-RP56 DVD Video, Video CD, CD (Progressive Scan)
DVD-RP91 DVD Video, DVD Audio, CD (Progressive Scan)
DVD-RV45 DVD Video, Video CD, CD (Karaoke)
DVD-RV65 DVD Video, Video CD, CD
DVD-RV80 DVD Video, Video CD, CD
DVD-CV51 DVD Video, Video CD, CD (5-Disc Changer)
DVD-H2000 DVD Video, DVD Audio, CD (Progressive Scan)

DVD RECORDER

DMR-E10 DVD Video, DVD RAM, Video CD, CD

DVD PORTABLE PLAYERS

DVD-PV40 DVD Video, Video CD, CD (No Monitor)
DVD-PV55 DVD Video, Video CD, CD (No Monitor)
DVD-PA65 DVD Video, Video CD, CD (No Monitor)
DVD-LV55 DVD Video, Video CD, CD (5” Monitor)
DVD-LV60 DVD Video, Video CD, CD (5.8” Monitor)
DVD-LV70 DVD Video, Video CD, CD (5.8” Monitor)
DVD-LA85 DVD Video, Video CD, CD (7” Monitor)

DVD HOME THEATER SOUND SYSTEMS

SA-HT70 DVD Video, CD (5-Disc Changer)
SA-HT90 DVD Video, DVD Audio, CD (5-Disc Changer)

DVD MINI SYSTEMS

SA-DK10 DVD Video, CD (5-Disc Changer)
SA-DK30 DVD Video, DVD Audio, CD (5-Disc Changer)
SA-PM88 DVD Video, CD
SA-HDA800 DVD Video, DVD Audio, CD

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SPECIFICATIONS
Power Supply: AC120 V, 60 Hz
Power Consumption: 14 W
Dimensions: 430 (W)×247 (D)×82 (H) mm

(excluding protrusions)

Mass: 2.6 kg (5.7 lb.)
Signal System: NTSC
Operating Temperature
Range:
Operating Humidity
Range:
Discs Played: (1) DVD-Video disc

Video Output:

Output Level: 1 Vp-p (75 Ohm)
Output Terminal: Pin jack (1 system)
S Video Output:
Y Output Level: 1 Vp-p (75 Ohm)
C Output Level: 0.286 Vp-p (75 Ohm)
Output Terminal: S terminal (1 system)
Component Video Output:
Y Output Level: 1 Vp-p (75 Ohm)
PB Output Level: 0.7 Vp-p (75 Ohm)
PR Output Level: 0.7 Vp-p (75 Ohm)
Output Terminal: Pin jack

Audio Output:
Output Level: 2 Vrms (1 kHz, 0 dB, 10K Ohm load impedance)

Audio Signal Output
Characteristics:

(1) Frequency Response:
DVD (Linear Audio): 4 Hz-22 kHz (48 kHz sampling)

CD Audio: 4 Hz -20 kHz
(2) S/N Ratio:
CD Audio: 115 dB
(3) Dynamic Range:
DVD (Linear Audio): 102 dB
CD Audio: 98 dB
(4) Total Harmonic

Distortion:
CD Audio: 0.0025 %
Digital Audio Output:
Optical Digital Output: Optical terminal
Pick-Up
Wave Length: 658 nm/790 nm
Laser Power: CLASS 2a/CLASS 1

Power Consumption in
Standby Mode:

Notes:
Specifications are subject to change without notice.
Mass and dimensions are approximate.

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+5 to +35°C (+41 to +95°F)
5-90 % RH (no condensation)

(2) Compact disc (CD-DA, Video CD)
(3) CD-R/CD-W

(Y: Green, PB : Blue, PR : Red)

4 Hz -44 kHz (96 kHz sampling)

approx. 2 W (DVD-RV31 Only)
approx. 2.5 W (DVD-RV41 Only)

SALES DEMONSTRATION LOCK FUNCTION

This function prevents discs from being lost when the unit is used for sales demonstrations by disabling the disc eject
function. The word "LOCKED" is displayed on the unit when the Eject button is pressed. Also the player cannot be
powered off. All other functions work fine though, such as Play, Forward Skip, etc.

Setting

The sales demonstration lock is set by simultaneously pressing the STOP button on the player and the POWER button on
the remote control unit. "LOCKED" will appear on the display.

Cancellation

The lock can be cancelled by the same pr ocedure as used in setting. ("UNLOCKED" is displayed on cancellation.
Disconnecting the power cable from power outlet does not cancel the lock.)

DVD LOCALE NUMBER

Movies are released at different times
around the world. To protect the box
office sales of films world wide, DVDs
are encoded with a locale number that
determines the country where the disc is
to be distributed. This protects the
filmmaker from premature distribution
in unauthorized countries. The locale
number of the DVD must match the
locale number of the player or the disc
will not playback. This limits the amount
of “gray market” hardware and software
sales.

The Locale Number of the unit can be
shown on the display by holding down
“Pause” & “Open/Close” on the unit and
pressing the number “6” button on the
remote control.

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SELF-DIAGNOSIS FUNCTIONS - 2001 MODELS COMPARED TO 2000 MODELS

Reference the chart below to see the improvements that have been made to the Self-Diagnostic functions of the new line
of DVD Players. Also Diagnostic features have been added to help reduce repair time on the 2001 models.

2000 Year DVD Player 2001 Year DVD Player Improvement or Change

• UHF Error Display UHF Error Display The storage capacity is increased.

The latest error storage The latest error storage

function n = 1 n = 20

• Jitter / Read Error Display Jitter / Read Error Display The focus drive current value can be

Focus Drive Value Display displayed.

• Laser Drive Current Display Laser Drive Current Display CD laser drive current can be measured.

for DVD for DVD/CD

• ADSC Internal RAM Data The servo learning value stored in the RAM

Display data inside the ADSC (Servo Controller) IC
is displayed.

• Servo Process Display Mainly in the initial starting operation period

of the player , a number is allotted to the servo
process of each step, and the process of the
starting operation can be displayed.

• Total Operation Time Display The operation times of the SP motor and the

Spindle motor Laser (both for the DVD and CD) can be
Laser (DVD/CD) displayed.

Notice a major improvement in checking the Optical Pick -Up is that there is a way to check the drive current of the CD
laser. Year 2000 and older Home DVD Players had only one laser in the Optical Assy that could operate at dual
wavelengths and power levels, in conjunction with the Holographic Objective Lens. Only the DVD laser drive current
could be checked on these units. With the year 2000 and older portable units, a dual laser pick -up assy was used, but once
again only the DVD laser drive current could be checked again.

On the 2001 DVD Home and Portable Players, all of which use a dual laser optical assy, both the CD and the DVD laser
drive currents can be checked on the front panel display. Another service mode improvement is that the total operation
time of both lasers and the spindle motor can be displayed on the front panel.

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TRAY FRONT REMOVAL

To change any parts on the mechanism or if
you want to set the unit up in the service
position (see page 29), the Tray Front must be
removed for the Tray in order to take the
mechanism out of the unit. This is also
necessary since the Front Panel cannot be
removed from the unit with the Tray Front still
in place. There are two ways to go about this.

If the unit under repair is semi-working, simply
power it on and press the Open/Close button to
eject the tray. With the tray fully ejected apply
upward pressure to the outside ends of the Tray
Front to remove it. Next press Open/Close one
more time to close the tray. Then remove the
Top Cover, followed by the Front Panel and
then the mechanism can be removed.

However, if the loading mecha has no power to
it or the unit is just dead, there is a manual
override in the form of an extra gear used to
release the tray. As shown in the top drawing
to the right, the gear is located on the top of the
mechanism just above the disc stabilizer. Simply
break the gear off of the Clamper unit and push it
onto the front end of a small screwdriver.

Next turn the unit on its side and insert the Gear Jig
into the hole in the bottom of the unit as shown in the
drawing at the bottom right. Turn the gear jig
counter-clockwise to eject the tray. The amount of
turns depends on how far away from home position the
traverse assembly is. Remember in the design
of the DVD-RV31 the traverse and loading use
the same motor.

Release the tray so that the Tray Front is far
enough out that it can be pull up and off of the
tray. Then turn the Gear Jig in the clockwise
direction to load the tray back into the
mechanism. Now remove the Top Cover,
followed by the Front Panel so than the
mechanism can be removed.

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Illustration of Tray Front being removed from the tray in an upward direction

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OPTICAL PICK-UP SELF-DIAGNOSIS AND REPLACEMENT PROCEDURE

The optical pickup self -diagnosis function and tilt adjustment check have been included in this unit. When
repairing, use the following procedure for effective self -diagnosis and tilt adjustment. Be sure to use the self­diagnosis function before replacing the optical pick-up when "NO DISC" is displayed. As a guideline, you
should replace the optical pickup when the value of the laser drive current is more than 55(CD) or 70(DVD).

Note:
Checking the laser drive current should be done within the first three minutes of turn on, with no disc loaded in
the unit to ensure an accurate reading.

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