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For U.S.A., Canada, Europe
& Japan model
Ver. 2
SERVICE MANUAL
MODEL DVD-2900
DVD AUDIO-VIDEO / SUPER AUDIO CD PLAYER
For purposes of improvement, specifications and
design are subject to change without notice.
Please use this service manual with referring to ,
the operating instructions without fail.
Some illustrations using in this service manual are
slightly different from the actual set.
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
Telephone: 03 (3837) 5321
X0168V.02 DE/CDM 0304
DVD-2900 2
SAFETY PRECAUTIONS
LEAKAGE CURRENT CHECK
LASER RADIATION
500V
1M
(1)
(2)
(1)
(2)
2
DVD-2900 3
DISASSEMBLY
(Follow the procedure below in reverse order when reassem-
bling.)
1. Top Cover
(1) Remove 10 screws on the top and both sides, and 2
screws on the rear.
(2) Widen the Top Cover a little laterally, then detach it with
sliding in the arrow direction.
2. Loader Panel, Front Panel
2.1. When the Disc Tray can be ejected electrically
(1) After removing the Top Cover, proceed as follows.
(2) Plug the power cord to the wall outlet, switch on the pow-
er, and press the "OPEN/CLOSE" button to open the
Disc Tray.
(3) Detach the Loader Panel by lifting it in the arrow direc-
tion.
(4) Press the "OPEN/CLOSE" button to close the Disc Tray,
then unplug the power cord.
(5) Disconnect the wire (CX025, CX061) connecting the
Front Panel's P.W.B. and the power PWB in the Chassis.
(6) Remove 4 top screws and 4 bottom screws, then detach
the Front Panel to the arrow direction.
(7) Disconnect the FFC (CX171) connecting the Front Pan-
el's P.W.B. and the main P.W.B. in the Chassis.
3
DVD-2900 4
2.2. When the Disc Tray cannot be ejected electri-
cally
(1) After removing the Top Cover, proceed as follows.
(2) Insert a screwdriver(-) into the left hole of the Mecha. Fix
Bracket, and push the Plate Gear of the DVD Mecha.
slowly to open the Disc Tray.
(3) Remove the Loader Panel, and close the Disc Tray.
(4) Detach the Front Panel following the same steps de-
scribed on the previous page 1.2.1. (5) - (7).
3. Video P.W.B.
(1) Disconnect 33P FFC (CY331) and 5P connector (CY053).
(2) Remove 2 screws on the Video P.W.B.
(3) Remove 2 screws from the rear.
(4) Detach the Video P.W.B. to the arrow direction.
4
DVD-2900 5
4. DVD Mecha.
(1) Disconnect 27P FFC (CY271) and 13P FFC (CY131)
from the Main P.W.B..
(2) Disconnect 12P connector (CY121) from Power P.W.B..
(3) Remove 4 screws on the DVD Mecha and 2 screws on
the Main P.W.B., then take it off in the arrow direction.
5. Audio P.W.B./Power P.W.B.
5.1. Audio P.W.B.
(1) Disconnect 4P connector (CY041).
(2) Remove 5 screws on the Audio P.W.B., 4 screws from
the rear.
5.2. Power P.W.B.
(1) Remove 5 screws on the Power P.W.B..
(2) Disconnect 2P connector (CX024)
5
DVD-2900 6
6. Mecha.Unit
(1) Remove 2 screws on the top of the Mecha. Unit, and de-
tach the Guide Clamp Bracket with sliding in the arrow di-
rection.
(2) Solder the short-circuit on the Traverse Unit. (Refer to
"Traverse Unit Disassembly" on the page 7.
(3) Disconnect the wires (CX151, CX241, CX031, CX051)
connecting with the Main PWB.
(4) Turn over the Mecha. Unit/Main PWB assembly, and re-
move 3 screws.
7. Traverse Unit Disassembly
Caution: The optical pickup can be damaged easily
by static electricity charged on human body. Take
necessary anti-static measures when repairing
around the optical pickup.
7.1. Guide Clamp Bracket disassembly
(1) Remove 2 screws.
(2) Remove Guide Clamp Bracket to arrow direction.
6
DVD-2900 7
7.2. Tray disassembly
(1) Remove to arrow direction.
(2) Solder the short-circuit (see in the frame).
7.3. Traverse Unit disassembly
(1) Remove 24P FFC (CX241), 15P FFC (CX151), 5P PH
WIRE (CX051) and 3P PH WIRE (CX031) connecting
with from the Main P.W.B..
(2) Remove 4 screws fixing Damper.
(3) Remove Traverse Unit to arrow direction.
7
DVD-2900 8
Note for disassembly Traverse Unit
(1) When assembling, reverse the order of the above.
(2) When inserting Tray, confirm boss on Slide Cam set to
ditch of the Tray (Compare with below drawing).
8
DVD-2900 9
DIAGNOSTICS OF OPTICAL PICKUP
AND REPLACING TRAVERSE UNIT
Make failure diagnostics of the Optical Pickup as follows.
If the laser drive current becomes more than 1.5 times of the
initial value, the Optical Pickup should be replaced.
The laser drive current is registered on the seal attached to
the rear of the Mecha.Unit.
In case of replacing the Pickup, change the whole part of the
Traverse Unit.
No mechanical adjustment is necessary after the replace-
ment.
Example: DVD 30mA
CD 30mA
Disc no read,unsteady playback, etc.
Laser drive current check
HF wave form check
(Refer to page 109)
Present value exceeds the ini-
tial value by 1.5 times
Traverse Unit replacing
(See page 7 for details)
Laser current registering after replacement.
Step: Disc playback
Write the measured value on the seal attached to the
Mecha. Unit
*As to the measuring method, refer to page 10,11.
9
DVD-2900 10
1. Label Indication of DVD Mechanism.
Laser current consumption value
ex) DVD mA, CD mA
DVD mA, CD mA
2. Note for Handling the Laser Pick-Up
the protection for the damage of laser diode.
If you want to change the optical device unit from any other
units, you must keep the following.
(1) It should be done at the desk already took measures the
static electricity in care of removing the OPU's (Optical
device unit) connector cable.
(2) Workers should be put on the "Earth Band".
(3) It should be done to add the solder to the short land to
prevent the broken Laser diode before removing the 24P
FFC cable.
(4) Don't touch OPU's connector parts carelessly.
3. Replacement of the Laser Pick-up
(Traverse Unit)
Check the Iop(Laser drive current)
If the present Iop (current) value exceeds.+50% of the ini-
tial value, replace the Traverse unit(Laser Pick-up) with a
new one.
4. Iop Measurement Method
When measuring Laser drive current (Iop), playback the
discs (CD,DVD) described below, measure Iop for CD
Laser and DVD Laser by the test point (+5V-A2 --
LD(CD),LD(DVD))on the Main P.W.B.
Test Disc :DVD/DVDT-S01 or commercially available discs.
:CD/TCD-784 (manufactured by ALMEDIO INC)
or commercially available discs.
10
DVD-2900 11
4.1. DVD Laser current measurement
LD(DVD) LD(DVD)
+5V-A2 +5V-A2
Oscilloscope Oscilloscope
(1) Connect the oscilloscope to +5V-A2 of test point for GND
side and LD(DVD) of test point for signal side.
(2) Playback the title 1 / chapter 1 of the DVD Test Disc.
(3) Measure the voltage between +5V-A2 and LD(DVD), cal-
culate Iop by the formula as shown below.
Measurement Voltage Value
Iop = ----------------------------------------------------------------------------
-
14 (Resistance value)
4.2. CD Laser current measurement
(1) Connect the oscilloscope to +5V-A2 of test point for GND
side and LD(CD) of test point for signal side.
(2) Playback the track 1 of the CD Test Disc.
(3) Measure the voltage between +5V-A2 and LD(CD), calcu-
late Iop by the formula as shown below.
Measurement Voltage Value
Iop = ----------------------------------------------------------------------------
-
11.75 (Resistance value)
LD(DVD) LD(CD) +5V-A2
Main Unit foil side
11
DVD-2900 12
5. Optical Pick-up Diagnostics and Replace-
ment
When repairing, carry out failure diagnostics by following the
procedure described below.
If the present value of the laser drive current is 50% up to ini-
tial value, it is the point of the pickup replacement.
In case of the pickup replacement, replace the Traverse Unit
with no adjustment.
The initial value is indicated on the label on back side of
Mecha.
NO DISC indicated, Playback not smooth,etc.
Laser drive current check
HF signal check
Present value
50% up to initial value
Traverse Unit replacement
(refer to page 6)
Laser drive current check after replacement.
If the present value is less than 80mA, write on
the new label by hand, put on the new label over
the old label.
If the present value exceeds 80mA, replace the Traverse Unit
a new one.
Cause: Damaged electrostatically when replaced.
12
DVD-2900 13
SERVICE MODE
1. Aging Mode
(1) preparation
(a) Equipment used: Any one of DVD Karaoke Disc (contain-
ing more than 10 titles).
(b) Unit setting : No spec other than the following procedure
(Aging mode).
At the tray open status, press the "POWER" button to
turn on the power while pressing the "PLAY" and
"OPEN/CLOSE" buttons for DVD operation simulta-
neously. mark on the FL lights, and the unit is set
to the heat run mode.
(2) procedure
(a) According the above, set to the aging mode.
(b) Set a DVD Karaoke disc to the tray and press the "PLAY"
button twice. mark on the FL blinks, and aging
operation(after playback title-1 and title-10 of the disc,
the tray open/close is made automatically, then playback
the title-1 again) starts. This aging operation continues
automatically until it is stopped or it stops caused by an
error.In case of some error in DVD, the following error
messages are displayed on the FL.
No Error contents FL display
1 Bad Disc ERROR 02 ERROR 02
2 Focus Error ERROR 02 ERROR 02
3 Read Error ERROR 02 ERROR 02
4 Tracking Error ERROR 04 ERROR 04
5 Tray Error ERROR 05 ERROR 05
6 Navigation Pack Read Error ERROR 06 ERROR 06
2. Initial Setting Mode
(1) Preparation
(a) Equipment used: None
(b) Unit setting: No spec other than the following procedure
(2) Procedure
(a) Initialize the DVD player when µcom, peripheral parts of
µcom, or Main P.W.B. has been replaced in servicing.
(b) Carry out the following to restore factory setting mode. At
the player stop condition, press 3 buttons for DVD oper-
ation("PLAY","OPEN/CLOSE", and " SKIP") until
"INITIALIZE" appears and disappears in the FL.
("Initialized" appears and disappears on the TV screen.)
(c) All user setting will be lost and its factory setting will be
restored when this initialization is made. Be sure to mem-
orize your setting for restoring again after the initializa-
tion.
13
DVD-2900 14
3. -Com Firm Check Mode
(1) Preparation
(a) Equipment used: None
(b) Unit setting: No spec other than the following procedure.
(2) Procedure
(a) Press the "POWER" button to turn on the power while
pressing the "PLAY" and "OPEN/CLOSE" buttons for
DVD operation simultaneously.
(b) FL all light mode.
This mode is for detecting FL defects. Press "STILL/
PAUSE " on the remote control unit once to light
all FL segments.
(c) DVD µcom and main unit µcom firm check mode. This
mode is for displaying the status of each µcom em-
ployed.
· DVD µcom firm: Press the "MENU" button or
, button.
· Each time the "MENU" button or , but-
ton on the remote control unit is pressed, µcom firm
is displayed one after another.
Ex.: [DRV 030307, B/E 6237,PANEL 6236]
Set Serial No.
Drive µcom B/E µcom Panel µcom
(lower 5 digits)
1 00001- Ver.030307 Ver.6237 Ver.6236
(Display) (Display) (Display)
Ver.030307 Ver.6237 Ver.6236
030307 6237 6236
( )030307 ( )6237 ( 6236
2
3
4
14
DVD-2900 15
4. Setting up the test mode
(1) Setting up
· In order to set up the test mode, you press STOP button
and REV button simultaneously in the heat-run mode.Fun-
damentaly, you can set up the test mode at the stop state
after disc loading. (Heat-run mode is set up by pressing
PLAY button,holding OPEN/CLOSE button. If it becomes
heat run mode, PLAY indicator and PAUSE indicator will
light up.)
LOADING display
FL display (The display part of 13 digits)
(2) Mode Select
· There are two, servo adjustment value display mode and
trace mode (error rate display), in the mode.
(a) If the REV button or the FWD button is pushed in the test
mode, it will become servo adjustment value display
mode.
FL display (The display part of 13 digits)
(b) If the REV button or the FWD button is pushed again, it
will become the trace mode (error rate display).
FL display (The display part of 13 digits)
(3) Mode decision
· The mode will be decided if the PLAY button is pushed in
the state where the mode is chosen.
(a) In the case of servo adjustment value display mode, a
focus offset adjustment value is displayed.
FL display (The display part of 13 digits)
(n:adjustment value)
(b) In the case of trace mode (error rate display), trace of
the circumference in one layer is chosen.
FL display (The display part of 13 digits)
(F: An address and an error rate display F at the time of undecided.)
(4) Change within the mode
· If the REV button or the FWD button is pushed in the state
where the mode is decided, a change within the mode will
be made.
(a) In the case of servo adjustment value display mode (re-
fer to table 1 servo adjustment value display mode de-
tails)
FL display (The display part of 13 digits)
(XX:selection mode [31--62] n:adjustment value)
15
DVD-2900 16
(b) In the case of trace mode (error rate display) (refer to ta-
ble 2 trace mode details)
FL display (The display part of 13 digits)
(YY: select mode [71--94] ,F: address and an error rate display F at the
time of undecided)
(5) Execution of trace mode (error rate display)
(refer to table 2 trace mode details)
· Trace will be performed if the PLAY button is pushed after
choosing operation.
FL display (The display part of 13 digits)
(YY:select mode[71--94],m:address[PBA][HEX],
l:error rate[COUNT/SEC][HEX])
(Note) Renewal of data is carried out for every CD:300 frame and
DVD:85ECC block.
· The mode chosen when selection mode was changed into
the trace execution and the PLAY button was pushed is
performed from the beginning.When the PLAY button is
pushed without changing selection mode, the mode under
selection is performed from the beginning.(If the PLAY
button is pushed, the address corresponding to the cho-
sen mode will be searched again.)
(6) Other operation
(a) If the STOP button is pushed into servo adjustment val-
ue display mode and trace mode (error rate display), it
will return to the state at the time of a test mode injection.
FL display (The display part of 13 digits)
(b) Push the OPEN/CLOSE button twice and carry out ser-
vo readjustment in OPEN operation ->CLOSE opera-
tion.
(It readjusts with test mode.)
OPEN display
CLOSE display
LOADING display
FL display (The display part of 13 digits)
(c) By pressing STOP button and REV button simulta-
neously in the test mode, it returns to heat-run mode.
16
DVD-2900 17
(7) Test mode detailed table
Table 1: servo adjustment value display mode details
17
DVD-2900 18
-
-
-
-
-
-
-
18
DVD-2900 19
Table 2: trace mode details
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
19
DVD-2900 20
Table 3:
Table 4:
20
DVD-2900 21
TROUBLE SHOOTING
1. GU-3494 MAIN PWB
1.1. FL TUBE doesn't light
(1) Check the Set-up process of Panel µ-COM
Check Power Supply Voltages.
· [IC301]:D1,D4 N.G. Check soldering.
+3.3V_D1, +3.3V_D4 · CY121 on MAIN PWB.
O.K.
Check Oscillation Waveform. N.G.
· [IC301]: Check soldering.
25MHz at 31pin. · X301 on MAIN PWB.
O.K.
Check Reset Signal. N.G.
· [IC301]: Check soldering.
"H" level at 35pin? · IC303(Reset IC) on MAIN PWB.
O.K.
Check Data Bus between N.G.
IC301 and IC302(Flash ROM): Check soldering.(short-circuit,open)
· Does the level change at FD(0--15) · FD(0--15), PA(1--16), PWE, PCE, POE,
Pins of IC301
O.K.
Check Data Bus between N.G.
FLD Driver(GU-3496 [IC101]) (1)Check soldering of CX171.
· [RST]: "H" level? (2)GU-3496 is N.G.(No Good).
O.K.
Continue to next step.
Check the Set-up process of B/E µ-COM.
21
DVD-2900 22
(2) Check the Set-up process of B/E µ-COM.
Check Power Supply Voltages. N.G.
Check the output level. N.G. Check soldering.
· [IC102]:
[ON/ST]:"H" level? · [IC301]: 55pin.
+3.3V_D1, +2.5V_D1 O.K.?
O.K. Check the circumference
O.K. soldering.
· [FB108, FB109]
Check Clock waveform. (1)Check soldering of X101.
N.G. Check 27MHz(3.3V) at N.G.
· [IC102]:18 pin. (2)Check soldering of IC105
27MHz (3.3V), O.K.? 4pin of IC105.
(SM8707).
O.K.
O.K. Check soldering of R168
and R153.
Check Reset signal. N.G. Check soldering
· [IC102]:(MC-TRST) 15 pin. · [IC301]: 37pin.
"H" level O.K.? · R310 and R311.
O.K.
Check Power Supply Voltages. Check soldering
· [IC101]: N.G.
· [IC117] and [IC118]
+3.3V_D1, +1.8V_D1 O.K.? · [FB101] and [FB102].
O.K.
Check Clock waveform. Check soldering
· [IC101]:106 pin. N.G.
· [IC105]: 3pin.
27MHz (3.3V), O.K.?
· R170, R101.
O.K.
Check Clock waveform. Check soldering
· [IC101]:172 pin. N.G. · [IC105]: 9pin.
24.576MHz (3.3V), O.K.?
· R174, R133.
O.K.
[IC101] Reset Check.
O.K.
Check Address,Data Bus between N.G.
Check soldering at Address,Data Bus.
[IC102] and [IC103](Flash Rom).
· [MCD0--MCD14], [MCA11--MCA30]
O.K.
Continue to next step.
Check the Set-up process of F/E µ-COM.
22
DVD-2900 23
(3) Check the Set-up process of F/E µ-COM.
Check Power Supply Voltages. Check soldering
· [IC502]: N.G. · [IC114], [IC115]
+3.3V_D2, +1.8V_D2 O.K.?
· FB405 and FB408.
+3.3V_A2, +1.8V_A2 O.K.?
O.K.
Check Clock waveform. N.G. Check soldering
· [IC502]:33 pin. · [IC105]: 15pin.
33.87MHz (3.3V), O.K.? · R171.
· [IC405], R697 and R574
O.K.
Check Reset signal. N.G. Check soldering
· [IC502]:(DRVRST) 51 pin. · [IC102]: 108pin.
"H" level O.K.? · R129, R635 and R570.
O.K.
END
1.2. Image is not displayed. (Blue-back, DENON wallpaper)
N.G. Check soldering
Check Digital output signal for Video. · [IC101]: 183--192pin.
· [IC101]: PXD(0--7), VCLK · RA101, RA102, R125 and R126.
O.K.
Check Digital input signal for Video. Check soldering
N.G.
· [GU-3497]: YUV(0--7), VCLK · [CX331]
O.K.
Continues to the Check process of GU-3497 VIDEO P.W.B..
23
DVD-2900 24
1.3. Does not Read Disc
[No PLAY], [00 00] displayed etc.
(1) Disc does not Rotate.
Check the Emission of Pick-up. N.G. (1)Check soldering of P.U.
· Emission of PU laser O.K.? · short-circuit?
* See attached sheet laser current check (2)Check the circumference soldering of TR501
(Page 10,11) and TR502.
(3)Check connector insertion
· [P.U.] -- [GU3494] FFC(CX241)
O.K. (4)Check soldering.
· [IC501], CXD1881AR
(5)Check soldering.
· [IC508]: FAN8042
Check Spindle drive signal. Check soldering
N.G.
· [DMO]: "H" level? · [IC502]: 111--113pin check.
· R599, R601, R666--R669
· [IC505]
O.K.
END
(2) CD check process
Check the RF signal. Check soldering
N.G.
Check the voltage of Test-Point(TP) · [IC501]: circumference soldering check.
· TP [RFAC]: about 1Vp-p. · [IC502]: 65--110pin check.
O.K.
Check Connection. N.G. Check soldering
· [IC502]--[IC503](16MDRAM) · [BD(0-15)], [BA(0-9)], [XLCOS], [XUCAS]
"L"--"H" alternate? [XMOE], [XRAS], [XMWR].
· [IC502], [IC503]
O.K.
END
(3) DVD check process
Check VSTEM. (communication) Check soldering
N.G.
· VDT(0--7)_COR, · [IC502]: 36--49pin
· XHAC_COR, VEFG_COR, · R621--R633
· XSHD_COR, DCK_COR · R401--411.
"L"--"H" alternate?
O.K.
Check Request Signal N.G. Check soldering
· Request From [B/E] to [F/E]
· [IC404]
[HDRQ_COR]: "L" level?
O.K.
END
24
DVD-2900 25
(4) SACD check process
Check communication.
Check soldering
· [VSTEM]: communication N.G.
"L"--"H" level alternate? · [IC404]
· R437--R449.
O.K.
Check RF signal for Water Mark. N.G. Check soldering
· TP [WM]: about 1Vp-p. · [IC403]: Circumference soldering check
O.K.
N.G. Check soldering
Check Bus Line.
· [IC401]: 141--162pin.
Between IC401 and IC402(16MSDRAM)
"L"-"H" level alternate?
· [IC402]
O.K.
END
25
DVD-2900 26
1.4. No sound, Noise generated
(1) CD
Check CD digital Audio data output. N.G. Check soldering
· [CDLRCK], [CDBCLK], [CDDIN], [DOTX] · [IC502]: 58--62pin check.
· R641--R644
O.K.
Check digital Audio data output. Check soldering
· [IC101]: [DATA1], [LRCK], [BCK], N.G. · [IC101]: 159--170pin check.
[DOUT0] · R134--R142
O.K.
Check soldering
Check Audio select output. N.G. · [IC204]--[IC207]
· [DAD0],[DAWS], [DABCK], [MCLK] · [CX271]
· [IC106] [IC107]
O.K.
Continues to the Check process of GU-3495 AUDIO P.W.B..
(2) SACD
Check DSD data output. N.G. Check soldering
· [IC401]: [DSARS], [DSALS], [DSASW], · [IC401]: 60--76pin check.
[DSAC], [DSAR], [DSAL], [BCKAO] · R450--R456
O.K.
Check audio select output. (1)Check soldering
· [DAD1], [DAD2], [DAD0], [DAWS], N.G. · [IC204]-- [IC207]
[DABCK], [MCLK] · CX271
(2)Check [IC204,205]
O.K. · DSD/PCM pin "H"
Continues to the Check process of GU-3495 AUDIO P.W.B..
26
DVD-2900 27
(3) DVD-VIDEO / AUDIO
Check DVD digital data output. N.G. Check soldering
· [IC101]: [DATA(1--3)], [LRCK], [BCK] · [IC101]: 159--170pin check.
· [IC201]: 46--71pin check.
O.K.
(1)Check power supply voltage.
Check Bus-manager output. N.G. · [IC201]: +3.3V_D1, +2.5V_D1
· [IC201]: [MELD(0--2)], [MELWS], (2)Check clock oscillation.
[MELBCK] · [IC201]: (X103) 12.288MHz O.K.?
(3)Check control signal
· [IC201]: [DSPRST], [HDIN], [HDOUT], [HCLK],
[INTRPT], [HCS] O.K.?
(4)Check communication.
O.K.
· [IC201]--[IC202](P-ROM)
(5)Check soldering.
· [IC203]
Check soldering
Check audio select output. N.G.
· [IC204]--[IC207]
[DAD0-2)], [DAWS], [DABCK], [MCLK]
· [CX271]
O.K.
Continues to the Check process of GU-3495 AUDIO P.W.B..
2. GU-3495 AUDIO P.W.B.
2.1. No sound or Noise generated at audio output terminal.
(1) Check Audio Output terminal, then Input pin of ICs.
· FL, FR IC206 Audio input check See attached sheet waveform (Page 115 )
CNT,SW IC209 Audio input check
· SL, SR IC212 Audio input check
(2) Check MUTE Circuit and Transistors.
· Check MUTE circuit Check Transistors
(TR217--TR220, TR211--TR226)
2.2. Does not output Digital output signal(DOUT).
Check belows
[IC201], [IC202]
[T201]
27
DVD-2900 28
3. GU-3497 VIDEO PWB
(1) Progressive output does not outputed.
Check Power Supply Voltages. Check soldering.
+3.3V_D3, +5V_D1, 5V_V1
N.G.
· [CY331]
+3.3V_V2, +2.5V_V1, +1.8V_D3 · [IC712] -- [IC714]
O.K.
Check Oscillation circuit.
· [IC-703]: (MC504) Set-up N.G. Check soldering.
20MHz Oscillation. · [X701]
RESET "H"?
O.K.
Check IC701. N.G. Check soldering.
RESET "H"? · [IC701]
O.K.
N.G.
Check IC704. Check soldering.
RESET "H"? · [IC704]
O.K.
N.G.
Check IC601. Check soldering.
RESET "H"? · [IC601]
O.K.
(2) Interlace output does not outputed.
N.G.
Check IC704. Check soldering.
RESET "H"? · [IC704]
28
DVD-2900 29
ELECTRICAL ADJUSTMENT FOR VIDEO
1. SETTING
(1) Connect the monitor TV to the video output terminal.
(2) Connect the oscilloscope to the Y-signal and C-signal of
S-VIDEO output terminal and each terminate at 75
Ohms.
(3) Connect the oscilloscope to the Y-signal, PB-signal and
PR-signal of Component video output terminal and each
terminate at 75 Ohms.
Use the 75 Ohms resistance must be 1%
(4) DVD test disc : DVDT-S01
2. BEFORE ADJUSTMENT
2.1. Setting the Oscilloscope as below. (1) PB/PR/
(1) PB/PR (a) TIME/DIV : 2 S
(a) TIME/DIV : 2 S (b) VOLT/DIV : 100mV
(b) VOLT/DIV : 100mV
(Use the probe : x10 ) (2) Y
(2) Y/C (a) TIME/DIV : 2 S
(a) TIME/DIV : 2 S (b) VOLT/DIV : 50mV
(b) VOLT/DIV : 50mV
(Use the probe : x10 )
Power on. Power Supply
USA & Canada : 120V
Europe : 230V
Japan : 100V
2.2. Preparation
(1) power on.
(2) Set the [SOURCE] selector knob : DVD
(3) Push [OPEN/CLOSE] button, then open the Disc Tray.
(4) Set DVD test disc (DVDT-S01) on the Disc Tray, and
then push [CLOSE] button.
(5) FL display appear "STOP", push [PLAY] button to play-
back DVD.
(6) Set the Video output to INTERLACED by remote control
unit.
(Push the [SETUP] button, set to the mode of
VIDEO SETUP.)
(7) Push the [DISPLAY] button of remote control unit and
then appear the ON-Screen Display (GUI) on the monitor
TV.
(8) Push the [12] button, select title 12 of DVD.
(9) Push the [ENTER] button, playback title 12. (color bar
75%)
29
DVD-2900 30
2.3. Procedure
(1) Adjust the signal of S-VIDEO out by the wave of oscillo-
scope.
(a) Target, Y-signal
Point : VR704
Adjustment Value : 1000 20mV
Waveform
Y
Y
Y-signal of S-VIDEO out
(b) Target, C-signal
Point : VR705
Adjustment Value : 286 5mV
Waveform
C
C
C-signal of S-VIDEO out
(2) Set the Video output to PROGRESSIVE by remote con-
trol unit. (Push the [SETUP] button, set to the mode of
VIDEO SETUP.)
(a) Target, Y-signal
Point : VR701
Adjustment Value : 1000 20mV
Waveform
Y
Y
Y-signal
(b) Target, PB-signal
Point : VR702
Adjustment Value : *525 10mV
Waveform
PB
PB
PB-signal
30
DVD-2900 31
(c) Target, PR-signal
Point : VR703
Adjustment Value : *525 10mV
Waveform
PR
PR
PR-signal
* : 486 10mV for U.S.A. & Canada model
31
DVD-2900 32
BLOCK DIAGRAM
32
DVD-2900 33
SEMICONDUCTORS
Only major semiconductors are shown, general semiconductors etc. are omitted to list.
1. IC's
Note: Abbreviation ahead of IC No. indicates the name of P.W.B., etc.
MA: Main P.W.B. AU: Audio P.W.B.
PD: Power/Display P.W.B. VI: Video P.W.B.
SC: Scart P.W.B. (for Europe model)
CXD1885Q (MA: IC502)
Top View
DRAM I/F PWM.FG D/A
DA3 (SLED2_TILT)
DA2 (FSCON)
DA0 (TSCON)
DA1 (SLED)
GPWM5
GPWM4
GPWM3
GPWM2
GPWM1
GPWM0
SPWM2
SPWM1
DVDD18
DVDD18
DVDD33
AVDD33
XUCAS
XLCAS
XMWR
XMOE
XRAS
RD10
RD11
RD12
RD13
RD14
RD15
RA10
RA11
DVSS
DVSS
AVSS
RD9
RD0
RD1
RD2
RD3
RD4
RD5
RD6
RD7
RA0
RA1
RA2
RA3
RA4
RA5
RA6
RA7
RA8
RA9
FG
156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105
DVDD33 157 104 AVDD18
RD8 158 103 VREFL
TEST0 159 102 VREFH
TEST1 160 101 AD9
TEST2 161 100 AD8
TEST3 162 99 AD7
TEST4 163 98 AD6
TEST5 164
A/D
97 AD5
TEST6 165 96 AD4
TEST7 166 95 AD3
Test/Monitor Pin
TEST8 167 94 AVDD33
TEST9 168 93 AD2
TEST10 169 92 AD1
TEST11 170 91 AD0
TEST12 171 90 AVSS
TEST13 172 89 AVSS
TEST14 173 88 RC
TEST15 174 87 LPF2
MODSEL0 175 86 LPF1
MODSEL1 176 85 VCOI
DVSS 177 84 AVDD18