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SERVICE MANUAL
MODEL DVD-2200
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, BUNKYO-KU, TOKYO 113-0034 JAPAN
X0188V.02 DE/CDM 0310
DVD-2200 2
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.
LASER RADIATION
Do not stare into beam or view directly with optical instruments, class 3A laser product.
500V
1M
(1)
(2)
(1)
(2)
2
DVD-2200 3
DISASSEMBLY
(Follow the procedure below in reverse order when reassem-
bling.)
After removing the Top Cover, proceed as follows.
1. Loader Panel, Front Panel 1.
1.1. When the Disc Tray can be ejected electrically
(1) Plug the power cord to the wall outlet, switch on the pow- 1.1.
er, and press the "OPEN/CLOSE" button to open the (1)
Disc Tray. OPEN/CLOSE
(2) Detach the Loader Panel by lifting it in the arrow direc-
tion. (2)
(3) Press the "OPEN/CLOSE" button to close the Disc Tray, (3)OPEN/CLOSE
then unplug the power cord.
(4) Remove 2 top screws and 4 bottom screws, then detach (4) 2 4
the Front Panel to the arrow direction..
Front Panel
Power Switch
Loader Panel
"OPEN/CLOSE"button
1.2. When the Disc Tray cannot be ejected 1.2.
electrically (1) A
(1) Insert a straight ruler etc. into the left side of the Mecha.
Unit and push the A-part (see Fig.) to open the Disc (2)
Tray manually. (3)
(2) Detach the Loader Panel by lifting it in the arrow direc- (4) 1.1.1. 4
tion.
(3) Push the Disc Tray to close it manually.
(4) Detach the Front Panel following the same steps de-
scribed on the previous page 1.1.1. (4).
A-part
Fig. The left side view of the Mechanism.
A straight ruler etc.
3
DVD-2200 4
2. DVD Mecha. 2. DVD
(1) Remove 4 screws fixing the Mecha. Cover and detach (1) 5
the Mecha. Cover.
(2) Remove 4 screws on the DVD Mecha. and 2 screws on (2) DVD 4 2
the Main P.W.B., then take it off in the arrow direction. DVD
DVD Mecha.
3. Mecha.Unit 3.
(1) Remove 2 screws on the top of the Mecha. Unit, and de- (1) 2
tach the Guide Clamp Bracket with sliding in the arrow di-
rection. (2)
(2) Solder the short-circuit on the Traverse Unit. (Refer to 5
"Traverse Unit Disassembly" on page 5. (3) CX151, CX241,
(3) Disconnect the wires (CX151, CX241, CX031, CX051) CX031, CX051
connecting with the Main PWB. (4) / 2
(4) Turn over the Mecha. Unit/Main PWB assembly, and re-
move 3 screws.
4
DVD-2200 5
4. Traverse Unit Disassembly 4.
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.
4.1.
4.1. Guide Clamp Bracket disassembly (1) 2
(1) Remove 2 screws. (2)
(2) Remove Guide Clamp Bracket to arrow direction.
4.2. Tray disassembly 4.2.
(1) Remove to arrow direction. (1)
(2) Solder the short-circuit (see in the frame). (2) )
5
DVD-2200 6
4.3. Traverse Unit disassembly 4.3.
(1) Remove 24P FFC (CX241), 15P FFC (CX151), 5P PH (1) 24P FFCCX241)15P FFC
WIRE (CX051) and 3P PH WIRE (CX031) connecting CX151),5P PH CX051)3P PH CX031)
with from the Main P.W.B.
(2) Remove 4 screws fixing Damper. (2) 4
(3) Remove Traverse Unit to arrow direction. (3)
Note for disassembly Traverse Unit
(1) When assembling, reverse the order of the above. (1)
(2) When inserting Tray, confirm boss on Slide Cam set to (1)
ditch of the Tray (Compare with below drawing).
6
DVD-2200 7
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 1.5
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
WAVE FORMS
(Refer to WAVE FORMS)
Present value exceeds the ini-
tial value by 1.5 times 1.5
Traverse Unit replacing
(See page 5 for details) 5
Laser current registering after replacement.
Step: Disc playback
Write the measured value on the seal attached to the Iop
Mecha. Unit
*Iop 9
*As to the measuring method, refer to page 9.
7
DVD-2200 8
1. Label Indication of DVD Mechanism. 1.DVD
Laser current consumption value
ex) DVD mA, CD mA
DVD mA, CD mA
2. Note for Handling the Laser Pick-Up 2.
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 (1)
static electricity in care of removing the OPU's (Optical
device unit) connector cable. (2)
(2) Workers should be put on the "Earth Band". (3)24P FFC
(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)
(4) Don't touch OPU's connector parts carelessly.
3. Replacement of the Laser Pick-up 3. (
(Traverse Unit) )
Check the Iop(Laser drive current) Iop(
If the present Iop (current) value exceeds.+50% of the ini- Iop 150
tial value, replace the Traverse unit(Laser Pick-up) with a
new one.
4. Iop Measurement Method 4.Iop
When measuring Laser drive current (Iop), playback the
discs (CD,DVD) described below, measure Iop for CD CD,DVD)
Laser and DVD Laser by the test point (+5V-A2 --LD(CD), Main +5V-A2 LD(CD),
LD(DVD)) on the Main P.W.B. LD(DVD)CD DVD Iop
Test Disc :DVD/DVDT-S01 or commercially available discs.
:CD/TCD-784 (manufactured by ALMEDIO INC) DVD/DVDT-S01
or commercially available discs. CD/TCD-784ALMEDIO
8
DVD-2200 9
4.1. DVD Laser current measurement 4.1.DVD
LD(DVD) LD(DVD)
+5V-A2 +5V-A2
Oscilloscope Oscilloscope
(1) Connect the oscilloscope to +5V-A2 of test point for GND (1) +5V-A2(GND)
side and LD(DVD) of test point for signal side. LD(DVD)( )
(2) Playback the title 1 / chapter 1 of the DVD Test Disc. (2)DVD 11
(3) Measure the voltage between +5V-A2 and LD(DVD), cal-
culate Iop by the formula as shown below. (3)+5V-A2 LD(DVD) Iop
Measurement Voltage Value
Iop = ----------------------------------------------------------------------------
-
14 (Resistance value)
Iop = ----------
---------
14()
4.2. CD Laser current measurement 4.2.CD
(1) Connect the oscilloscope to +5V-A2 of test point for GND (1) +5V-A2(GND)
side and LD(CD) of test point for signal side. LD(CD)( )
(2) Playback the track 1 of the CD Test Disc. (2)CD 1
(3) Measure the voltage between +5V-A2 and LD(CD), calcu- (3)+5V-A2 LD(CD) Iop
late Iop by the formula as shown below.
Measurement Voltage Value
Iop = ----------------------------------------------------------------------------
- Iop = -------------
------------
11.75 (Resistance value) 11.75()
LD(DVD) LD(CD) +5V-A2
Main Unit foil side
9
DVD-2200 10
SERVICE MODE
1. Aging Mode 1.
(1) preparation (1)
(a) Equipment used: Any one of DVD Karaoke Disc (contain- (a)DVD 10
ing more than 10 titles).
(b) Unit setting : No spec other than the following procedure (b)
(Aging mode).
At the tray open status, press the "POWER" button to DVD +
turn on the power while pressing the "PLAY" and /
"OPEN/CLOSE" buttons for DVD operation simulta- FL
neously. mark on the FL lights, and the unit is set
to the heat run mode.
(2) procedure (2)
(a) According the above, set to the aging mode. (a)
(b) Set a DVD Karaoke disc to the tray and press the "PLAY" (b) DVD
button twice. mark on the FL blinks, and aging 2 FL
operation(after playback title-1 and title-10 of the disc, 1 10
the tray open/close is made automatically, then playback / 1
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 tray opens and DVD FL
the following error messages are displayed on the FL.
No Error contents FL display No. FL
1 Bad Disc ERROR 02 1 ERROR 02
2 Focus Error ERROR 02 2 ERROR 02
3 Read Error ERROR 02 3 ERROR 02
4 Tracking Error ERROR 04 4 ERROR 04
5 ERROR 05
5 Tray Error ERROR 05
6 ERROR 06
6 Navigation Pack Read Error ERROR 06
2. Initial Setting Mode 2.
(1) Preparation (1)
(a) Equipment used: None (a)
(b) Unit setting: No spec other than the following procedure (b)
(2) Procedure (2)
(a) Initialize the DVD player when