Parts marked with "" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram .........................5-1
[2] Types of transistor and LED ..........................5-1
[3] Waveforms of DVD circuit..............................5-2
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
CD-DV999W
SAFETY PRECAUTION FOR SERVICE MANUAL
WARNINGS
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICINGTO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET ISREMOVED, THE POWER ISTURNED ON WITHOUT ACOMPACT DISC IN POSITION ANDTHE
PICKUP IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR SEVERAL SECONDS TO DETECT A DISC. DO NOT
LOOK INTO THE PICKUP LENS.
2-THE LASER POWER OUTPUT OF THE PICKUP UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY
PRESET BEFORE SHIPMENT.
DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
VOLTAGE SELECTION
Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage
as follows.
Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).
core of transformer T302
fully counter
clockwise)
Setting/
Adjusting
Point
Instrument
Connection
*1
Instrument
Connection
*1
TAPE MECHANISM
Tape
Motor
Variable Resistor in motor
Figure 1
[2] Tuner section
fL: Low-range frequency
fH: High-range frequency
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
Test Stage Frequency Frequency
AM IF450 kHz1,602 kHzT351*1
AM Band
Coverage
AM
Tracking
*1. Input: Antenna Output: TP302
—531 kHz(fL): T306
990 kHz990 kHz(fL): T303*1
*2. Input: Antenna Output: TP301
Display
Setting/
Adjusting
Parts
1.1 ± 0.1 V
Figure 2 Adjustment Points
Instrument
Connection
*2
2 – 1
CD-DV999W/CD-DV777W
[3] DVD/CD section
1. DVD SECTION
• Adjustment
Since this DVD system incorporates the following automatic adjustment functions, readjustment is not needed when replacing the
pickup. Therefore, different PWBs and pickups can be combined
freely.
Each time a disc is changed, these adjustments are performed
automatically. Therefore, playback of each disc can be performed
under optimum conditions.
Items adjusted automatically
1) Offset adjustment (The offset voltage between the head amplifier
output and the VREF reference voltage is compensated inside the
IC.)
* Focus offset adjustment
* Tracking offset adjustment
2) Tracking balance adjustment
3) Gain adjustment (The gain is compensated inside the IC so that the
loop gain at the gain crossover frequency will be 0 dB.)
* Focus gain adjustment
* Tracking gain adjustment
DVD/CD Error code description
ErrorExplanation
10*CAM error. Can't detect CAM switch when CAM is moving.
11*When it detect cam operation error during initialize pro-
cess.
20*TRAY error. Can't detect TRAY switch when TRAY is mov-
ing.
21*When it detect TRAY operation error during initialize pro-
cess.
30When it change to DVD/CD function, DVD cannot read ini-
tial data.
*'CHECKING'
If Error is detected, 'CHECKING' will be displayed instead of 'ERCD**'. 'ER-CD**' display will only be displayed when error had been
detected for the 5th times.
[4] TEST Mode
1. TEST Mode Functions
1.1. Entering the TEST Mode
While holding down both the button and the X-BUSS button of the
main unit from the power-off state, press the POWER button to enter
the Test Menu Mode.
1.4. Canceling TEST Mode
1. Press the POWER button in each TEST Mode to display
“CLEARAL” except SHIPPING TEST. Then reset and start.(Clear
RAM.)
2. It is necessary to play-off the A/C cord after “FINISHED” is displayed on the FL for SHIPPING TEST
2. Shipping TEST Mode
2.1. Outline
• ID command for initialization is sent to the DVD unit and E2PROM
in the unit is initialized.
• System Microcomputer and DVD changer initializerd
2.2. TEST Mode Operation
When entering the Shipping TEST Mode:
1. “WAIT” is displayed on the FL display.
2. “FINISHED” shall be kept displaying after Initiation is completed.
Manually play off the A/C cord to get out of the TEST Mode.
When lnitialization is failed, “INIT ERR” remains to be shown on the
FL display until play off the A/C cord.
2.3. Supplementary Note
1. When entering this TEST Mode, it is prohibited to press any key
until the above processing is completed.
3. DVD TEST Mode
3.1. Outline
• To send key codes of the TEST Mode 1 to the DVD unit to start the
TEST Mode.
• Thereafter the system’s microcomputer only sends key codes to
the DVD unit.
• The main unit operation is started in the same way as the normal
startup of the DVD/CD Function.
• Only monitor (video) output is normally controlled. “MUTE ON”
remained.
• During this TEST Mode, “DVD TEST” is shown on the FL display
and change to “DVD ****” (****: DVD version).
(Display is shown by OSD. Main unit display not available.)
3.2. TEST Mode Operation
1. The TEST Mode is started in the same way as the normal startup of
the DVD/CD Function. Then the DVD unit is normally started. During the TEST Mode, “DVD****” is continuously displayed.
1.2. Test mode processing
• When entering the TEST Mode, the ROM version are displayed as
follows.
Version on the FL display: UD***** (****: Version No.)
1.3. TEST Mode button
• Press direct designation button during the version display to enter
the specified TEST Mode as shown below.
Equalizer adjustment value and
TES signal offset displayed.
6-digit numeric of the TIME counter grows.
0000
"0000": 4-digit alphanumeric
0000
also displayed for CD-RW.
2 – 4
Spin Offset Adjustment Mode
Note 1: After replacing the DVD main PWB unit and the DVD mechanism chassis unit,
be sure to adjust spin offset.
Start from "NO DISC" (the tray closed).
CD-DV999W/CD-DV777W
F000000000000000
Press the "3" key.
DYNAMIC TEST
1:LASER TEST
2:STEP TEST
3:PLAY TEST
3:PLAY TEST NO TRAY
M E N U:SPIN OFFSET ADJUST
Press the "MENU" key.
SPIN OFFSET ADJUST
SPIN AD OFFSET
SPIN OFFSET TEST
ADJUST COMPLETE
SPIN 4-digit alphanumeric
The screen display as
shown on the left
The screen display as
shown on the left
Tray opens.
Adjustment started
4-digit alphanumeric
displayed
Failure
SPIN OFFSET TEST
ADJUST FAILED
2 – 5
Turn off the power and clear the Spin Offset Adjustment
Mode to try again from the start.
CD-DV999W/CD-DV777W
3.3. DVD Display Test
To display servo adjustment values, error rates, laser current, etc. during DVD playback.
1. Press the DISC 2 button on the main unit from the TEST Mode initial condition.
2. DVD starts up with “DVD” blinking on the FL display.
3. Press the Tuner/Band button to display DVD adjustment values, etc. Press it again and the display disappears and the normal screen returns.
The error rates displayed are for reference; they are not the judging criteria.
4. Press the “Power” button to cancel this mode.
DVD
FG0TG0TG1FG1FBL0TBL0TBL1FBL1
Average error rate
Audio buffer spaceVideo buffer spaceNumber of error occurrence
TitleNoChapNo
CD
Audio buffer spaceVideo buffer spaceNumber of error occurrence
TrNoTIME
When the Spin Offset Mode is never executed
DVD
FG0
Average error rate
Maximum error rateLaser output
Sector ID
Maximum error ratLaser output
TG0TG1FG1FBL0TBL0TBL1FBL1
SPIN READ NG
Audio buffer spaceVideo buffer spaceNumber of error occurrence
TitleNoChapNoSector ID
CD
Audio buffer spaceVideo buffer spaceNumber of error occurrence
TrNoTIME
2 – 6
3.4. ROM Rewrite Mode
Description of version name
Example: VER: VXW0223A
From the left:
V : Video model
X : CD-DV***W
W : Southeast Asia
0223A:Version
* The format may be changed.
ex)VXW0223A
2 Destination
1 Model
V: Video model/A: Audio/Model for SACD
X : CD-DV***W
1 Model
J : Japan
H : Europe
U : USA
K : Korea/Philippines
W : Southeast Asia
A : Australia
Z : Middle East
C : China
M : Mexico
2 Destination
1. Creating version upgrade disc
• Write the following three files on CD-R/CD-RW.
• !$#%&’().@{}
• D-combo3.cdr
• ********.bin
(********: Names differ according to versions)
• Write the files at lowest possible speed.
• Do not mix other data.
2. During normal power-on, insert the version upgrade disc.
3. After the version upgrade disc is normally determined, the message, “VERSION UP DISC IS DETECTED” and the version are displayed on OSD. Then ROM data read is started.
OSD display (Example)
VERSION UP DISC
IS DETECTED
0905
CD-DV999W/CD-DV777W
7. Confirming the version
• A few moments after entering the DVD TEST Mode, “DVD ****”
is displayed on the main unit.
(****: 4-digit numeric version code)
• To confirm the detailed version information, press the “1” key of
the remote control.
The system information is displayed on the OSD display.
(“********”: Version name) Check that the version name conforms to the write data.
4. When the data read is completed, “NOW FLASH WRITE START…”
is displayed on OSD. Then the Flash Rom rewrite is entered.
OSD display (Example)
NOW FLASH WRITE START...
5. When rewrite is normally completed, “FL W: END” is displayed on
the main unit. Eject the disc automatically coming out from the tray.
Then turn the power off.
6. If “FL W: ERR” or “CANT READ” is displayed on the main unit or
“FL W: END” is not displayed after 10 minutes, turn the power off to
try again from the start.
ROM DATA READING
956
VERSION UP DISC
IS DETECTED
0905
READ COMPLETE
8. Press the POWER button to display “CLEARAL”
• Reset and start the system microcomputer to control the TEST
MODE.
2 – 7
CD-DV999W/CD-DV777W
3.5. List of Keys Used for DVD TEST Mode and Transmit Key Codes to the Unit
Button for System
Communication
C-PLAYPlay26h
C-PAUSE/STILL
(Remote Control)
C-STOP (Remote control)Stop27h
C-STOP (Main Unit)Stop27h
SKIP-UP/CUESkip+2ChIn this TEST Mode Skip+/Next button code (2Ch) is constantly transferred.
SKIP-DWN/REVSkip-2BhIn this TEST Mode Skip-/Prev button code (2Bh) is constantly transferred.
SKIP-UP
(Remote Control)
SKIP-DWN
(Remote Control)
REPEAT (Remote Control) Repeat32h
A-B repeat
Buttons used for the TEST Mode are shown above. When pressing the following DVD-related buttons, corresponding button codes are transmitted.
ON SCREEN, SURROUND, CUE, REVIEW, Curser ↑, ↓, ←, →, RETURN, ZOOM, TOP-MENU, CLEAR, RANDOM subtitle, angle, sound, DVD
MENU, Gamma, S-picture, DIRECT, DISPLAY, SET-UP.
3.6. Supplementary Note
1. Do not press buttons other than the DVD-related buttons, except for the Power button. Do not switch functions; do not control volumes.
For the electronic volume IC and the monitor output control, constantly fix the setting to DVD/CD function.
2 – 8
4. CD-ROM Write Mode
F
z
4.1. Outline
DVD-ROM can be upgraded from CD-ROM. The write mode is
entered from the normal mode.
1. When any CD-ROM for version upgrade DVD is detected, the status informs that the version upgrade ROM is being read.
When DVD microcomputer is changed to System microcomputer
and byte 24 status data detects 0Fh:
• The TEST Mode is entered by the status reception. (Required to
be internally recognized.)
• The Power button /Function switching is prohibited.
(Power supply is necessary until write is completed.)
• It is prohibited to accept any button input until write is com-
pleted.
• Change the display as follows:
TOC READ
Standard Specification of Stereo System Error Message Display Contents
Error ContentsDisplayNotes
CDCD Changer Mechanism Error.'ER-CD**' (*)10: CAM SW Detection NG during normal operation
DVD Communication Error.'ER-CD30'DVD COMMUNICATION ERROR.
Focus Not Match/IL Time Over.'NO DISC'
TUNERPLL Unlock.PLL Unlock.
M 87.50 MH
11: CAM SW Detection NG during initialize process
20:TRAY SW Detection NG during normal operation
21:TRAY SW Detection NG during initialize process
2. To expand into RAM, DVD performs read-operation.
3. When reading ends, transmission stops for writing.
(Ignore stoppage of transmission during write.)
When transmission stops, the transmission port receives write
states, which are displayed according to port states.
DVD DATADVD CLKStateUnit display
1LHDuring readFLASH WR
2HLDuring writeFL W : S T R
3HHWrite endedFL W : E N D
4LLWrite errorFL W : E R R
4. The DVD/CD tray will automatically open when end of rewrite is
detected.
(The DVD status is not relevant since there is no communication.)
5. To close the DVD/CD door, cancel the TEST Mode and reset when
the Power button is pressed.
6. To initialze the E2PROM, do the shipping TEST mode.
CD-DV999W/CD-DV777W
(*) CHECKING:
If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**'. 'ER-CD**' display will only be display when
error had been detected for the 5 th times.
Speaker abnormal detection and +B PROTECTION display
In case speaker abnormal detection or +B PROTECTION had
occurred, it can be check by pressing 'POWER', '' and 'X-BASS'
button. MicroComputer version number will displayed as "UD".
Press ‘GAME/VIDEO’ button during version number display and then
press ‘POWER’, ‘MEMORY/SET’ and ‘GAME/VIDEO’ button. Display
will show "S** B**". S is referring to speaker abnormal detection and B
is referring to +B PROTECTION. ** is in hex valve.
+B PROTECTION is condition when irregular process occur on power
supply line.
BEFORE TRANSPORTING THE UNIT
The following process need to be taken after set tapering/parts
replacement.
7. Press the ON/STAND-BY button to enter stand-by mode.
8. While pressing down the button and the X-BASS/DEMO button, press the ON/STAND-BY button. The Micro Computer version
number will be displayed as "UD".
9. Press OPEN/CLOSE button until "WAIT"→ "FINISHED" appears.
10.Unplug the AC cord and the unit is ready for transporting.
2 – 9
CD-DV999W/CD-DV777W
[5] CD Changer mechanism section
• A number in the drawing sheet is the number of the parts guide
(CHANGER MECHANISM PARTS).
1
141
2 – 10
140
HALF GEAR
MUST ARRANGE AS SHOWN
2
CD-DV999W/CD-DV777W
139
APPLY SANKOL BEFORE FIX
FIX ITEM 1 ACCORDING TO THE
SHOWN PICTURE ABOVE
ROTATE MODE BIG GEAR UNTIL REACH AS SHOWN IN PICTURE
2 – 11
CD-DV999W/CD-DV777W
3
143
APPLY GREASE
112
PULL THE LEVER UNITIL
REACH THE ARROW MARK
2 – 12
4
CD-DV999W/CD-DV777W
FIGURE 2
FIGURE 1
152
142
APPLY GREASE
118
SLOT CLAMP SW ARM INSIDE BASE SLOT
2 – 13
CD-DV999W/CD-DV777W
5
APPLY GREASE AT BOTTOM SIDE
OF GEAR FOLLOW MARKING
NO NEED APPLY GREASE AT BOTTOM
SIDE
FIGURE 1
APPLY GREASE AT
TOP SIDE OF GEAR
FOLLOW MARKING
127
OTHER THAN FIGURE 1 DIRECTION ALL N.G
O.K
128
N.G
BLACK MARK
2 – 14
6
CD-DV999W/CD-DV777W
APPLY GREASE AT
HALF GEAR AREA
ROTATE CLOCKWISE UNTIL REACH HERE (MAXIMUM)
129
2 – 15
CD-DV999W/CD-DV777W
7
CHANGE COLOR TO BLACK
150151148
2 – 16
8
CD-DV999W/CD-DV777W
TRAY BIG GEAR
CHANGE COLOR
TO BLACK
MUST FREE FROM GREASE THE SHOWN AREA
O.K
GREASE APPLICATION LENGTH
GREASE APPLICATION PORTION
N.G
124
TRAY BIG GEAR
CHANGE COLOR
TO BLACK
SHOWN HOLE MUST FACING ARROW DIRECTION
131
2 – 17
CD-DV999W/CD-DV777W
9
138126125
APPLY GREASE AT
BOTTOM SIDE ONLY
TR-RE JOINT GEAR C
APPLY GREASE ONLY AT TOP SIDE GEAR
MUST FIX ACCORDING TO THE HOLE'S
2 – 18
10
CD-DV999W/CD-DV777W
148147146145
2 – 19
CD-DV999W/CD-DV777W
11
121
144
WH EN FIXING ITEM 2 MUST FOLLOW AS SHOWN
APPLY GREASE
130
2 – 20
12
CD-DV999W/CD-DV777W
117
FIGURE 2
FIGURE 1
APPLY GREASE
FIGURE 3
APPLY GREASE SC141
2 – 21
CD-DV999W/CD-DV777W
13
ITEM 2 , 3 MUST APPLY GREASE ON TOP SIDE GEAR ONLY
134
GEAR 112GEAR 112
133
132
O.K
TOP VIEW AFTER
ASSY
N.G
FIX REVERSE N.G
2 – 22
14
APPLY GREASE BEFORE FIX
A
MOVE 112 UNTIL TOUCH THE WALL
B
DURING GEAR A ROTATE
MUST PRESS SHOWN AREA
AND LEVER B WILL MOVE
ARROW DIRECTION THEN
FIX PART 108
CD-DV999W/CD-DV777W
SCREW TORQUE
+0.5
2kgf-cm
-0
108803 x6
APPLY GREASE
CONFIRM WHETHER
FIXED
PROPELY OR NOT
2 – 23
CD-DV999W/CD-DV777W
15
APPLY GREASE
115
BEHIND THE LEVER NEED TO APPLY GREASE
PULL IT THEN LEVER WILL
MOVE IN
2 – 24
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