Toshiba DVD Player NTDVT006BK User Manual
NTDVT006BK  
TOSHIBA  
Service Training  
"Customer Satisfaction Through Knowledge"  
TOSHIBA  
DVD  
SERVICE GUIDE  
TOSHIBA AMERICA CONSUMER PRODUCTS,  
INC.NATIONAL SERVICE DIVISION  
NATIONALTRAINING DEPARTMENT  
1420-BTOSHIBA DRIVE  
TOSHIBA AMERICA CONSUMER PRODUCTS, INC.  
LEBANON,TN 37087  
"In Touch With Tomorrow"  
 
INTRODUCTION  
1. This book supplements video tape  
NTDVT006, Toshiba DVD Servicing. It  
covers the mechanical disassembly and  
reassembly of a DVD player, and how to  
diagnose a problem to the board level. For  
more detailed information and drawings refer  
to service manual 810-9601. For connector  
locations and pin identification, refer to the  
drawings in the back of this book.  
CONTENTS  
INTRODUCTION ............................................ 1  
DISASSEMBLY ............................................... 1  
LASER DISASSEMBLY ................................. 3  
LASER REASSEMBLY................................... 5  
DVD REASSEMBLY....................................... 6  
TROUBLESHOOTING.................................... 7  
Introduction ................................................... 7  
Power Supply Checks .................................... 8  
Front Panel Checks ........................................ 9  
Laser Checks................................................ 10  
Focus & Tracking Checks............................ 11  
Loading Motor Checks ................................ 14  
Color Difference Output Checks ................. 14  
Summary...................................................... 15  
PC Board Layout ......................................... 16  
Connector Pinouts ....................................... 17  
2. The DVD player is very static sensitive, so  
always use a static mat and wrist strap when  
servicing the player. Failure to take these  
precautions could destroy or reduce the life of  
the laser and many other components.  
DISASSEMBLY  
1. Retract the 5 screws holding the cover in  
place.  
2. Lift off the cover.  
3. If a disc is stuck in the player it can be manu-  
ally removed by pushing the eject level with a  
long screwdriver.  
4. After the tray pops out, pull it completely  
open and remove the disc.  
5. To place the unit in the service position,  
remove the shield covering the main board.  
6. Remove the 4 screws on the main board and  
1
 
 
the 2 self tapping screws on the back panel.  
7. Remove the top portion of the shield and set  
it aside.  
8. Unclip the wires leading to the power supply.  
9. Lift the main board and remove the bottom  
portion of the shield. Then rest the main  
board in the built-in holders.  
10. Align the notch in the board with the bottom  
of the built-in holder to avoid damaging the  
main board.  
11. Before unplugging the flex cables, the laser  
pickup must be shorted to prevent static  
damage to the laser.  
21. Remove the 4 screws holding the power  
supply.  
22. Lift the power supply board out of the cabi-  
net.  
23. Remove the 3 screws holding the laser me-  
chanical assembly.  
24. Lift the assembly out of the cabinet.  
25. Remove the component video output board by  
retracting 2 screws on the back of the cabinet.  
26. Remove the front panel by retract 4 screws, 1  
on each side and 2 on the top.  
27. Releasing the tabs and pull the panel away  
from the cabinet.  
12. To access the laser pc board, remove the  
safety shield covering the laser assembly.  
13. Remove the 2 screws holding the disc clamp  
and lift it off the laser assembly.  
28. The front panel circuit boards are remove by  
retracting 6 screws,.and lifting the circuit  
boards out of the front panel.  
14. Cut the cable tie that holds the power supply  
cable to the cross bracket.  
LASER DISASSEMBLY  
15. Remove the 2 screws holding the cross bar  
and lift the cross bar off the player.  
16. Remove the 2 screws holding the disc tray in  
the player.  
17. Pull the tray out of the player.  
18. Carefully solder the pad with a small tipped  
soldering iron.  
19. Remove the main board by gently unplugging  
the flex cables and the power supply connec-  
tor.  
1. Unplug the flex cable attached to the laser  
slide assembly.  
2. Remove the 4 screws and washers holding the  
laser slide assembly in place.  
3. Lift the laser slide assembly out and set it  
aside.  
4. Retract 2 screws at the rear of the mechanical  
assembly.  
5. Remove the lift assembly.  
6. Remove the loading motor by first taking off  
the loading belt.  
20. Lift the main board out of the holders.  
2
3
 
7. Retract the 2 screws on either side of the  
motor pulley.  
LASER REASSEMBLY  
8. Turn the mechanical assembly over and  
release the 3 tabs holding the loading motor  
PC board.  
1. Start the laser reassembly by reinstalling the  
feed motor. Be sure the red wire is attached  
to the number 2 terminal, and the black wire  
to the number 1 terminal.  
2. Push the feed motor gear onto the shaft of the  
feed motor.  
3. Check the distance between the ring magnet  
and the hall switches with a 0.5mm feeler  
gauge, and adjust the height of the gear as  
necessary.  
4. Reinstall the center gear making sure that the  
small gear is on top.  
5. Rotate the upper and lower portions of the  
last gear until the alignment holes match.  
6. Once the holes are aligned, position the slide  
against the stops near the feed motor.  
7. Position the gear over the shaft and gently  
push it down while slightly pushing the rack  
gear with your thumb until the gear slides  
easily into place.  
8. Install the cut washer to hold the gear in  
place.  
9. Position the loading motor circuit board on  
the mechanical assembly and snap it back into  
place. Then attach the flex cable to the  
bottom of the assembly.  
9. Lift the pc board out of the mechanical  
assembly and gently detach the flex cable.  
10. The laser slide assembly is replaced as a  
whole; however, the feed motor, 3 gears, and  
2 hall switches can be replaced individually.  
11. Remove these parts by first taking off the cut  
washer and the gear that drives the slide.  
12. Next, remove the middle gear.  
13. The final gear is pressed onto the motor shaft,  
and has a ring magnet on its lower side to  
provide slide position information along with  
the hall switches. Never try to remove or  
replace this gear with the other 2 gears in  
place, because you risk breaking the ring  
magnet.  
14. To safely remove the gear, turn it so a solid  
center portion is facing the outside of the  
assembly. Then place a very small screw-  
driver under the gear until the blade contacts  
the motor shaft and gently push down.  
15. Remove the 2 screws holding the feed motor.  
16. Unsolder the red and black wires and remove  
the feed motor.  
10. Turn the mechanical assembly over and make  
sure the tray position switch is in the cut out  
4
5
 
portion of the lever.  
4. Replace the laser mechanical assembly.  
5. Replace the power supply.  
11. Push the slider back and forth to confirm the  
operation of the opening and closing gears.  
12. Replace the 2 screws holding the loading  
motor in place.  
13. Replace the loading belt.  
14. Slide the lift assembly into place, and replace  
the 2 holding screws.  
15. Manually operate the tray loading and lift  
mechanisms to ensure they operate properly.  
16. Set the laser slide assembly into the mechani-  
cal assembly, and replace the 4 screws and  
washers.  
6. Place the main board in the service position  
and connect all of the flex cables.  
7. Remove the solder from the shorting pad.  
8. Install the disc clamp and the cross bar.  
9. Replace the safety shield.  
10. Slide the disc tray in and replace the locking  
screws.  
11. Place the main board in its normal position  
with the shield surrounding it and fasten them  
in place.  
12. Install the cover.  
17. Insert the flex cable into the connector on the  
laser slide assembly, and lock it in place.  
18. Move the slide assembly back and forth to  
ensure the flex cable doesn’t interfere with its  
operation.  
19. If the flex cable doesn’t allow the slide  
assembly to easily reach the end of its travel,  
push the flex cable down so it slides under the  
metal plate of the slide assembly.  
TROUBLESHOOTING  
Introduction  
1. This section of the book covers troubleshoot-  
ing the DVD player to the board level. When  
voltages or waveforms are shown refer to the  
appropriate connector in the service manual  
or the back of this book.  
2. Before removing any connectors in the player,  
always remove AC power first. Failure to do  
so will severely damage the player.  
DVD REASSEMBLY  
1. Reinstall the front panel circuit boards back in  
the front panel.  
2. Attach the front panel to the unit and replace  
the screws.  
3. Before you take the player apart, thoroughly  
check its operation and note all symptoms.  
4. Be sure the audio selector switch is in the  
proper position when you check out the audio.  
In the left position you get AC-3 audio and no  
3. Reinstall the component video output board.  
6
7
 
left and right analog audio. In the right  
position you get left and right analog audio  
and no AC-3 audio. If you change the position  
of the audio selector switch, you must cycle  
the power so the change is recognized by the  
microprocessor.  
4. Recheck the dc voltages on pins 2, 3, 4, 5, 6,  
7, 8, 12, 13, and 14.  
5. If the voltages are still improper or missing  
there is a problem with the power supply.  
However, if the voltages are normal the power  
supply is alright, and there is most likely a  
problem on the main board or 1 of the other  
boards that is loading down the power supply.  
6. For a loading problem on a board other than  
the main board, remove AC power and  
reconnect the power supply to the main board.  
Remove the connector to the front panel and  
apply AC power. Check the voltages supplied  
to the front board. Repeat this process for  
each board, and when the board causing the  
problem is disconnected the power supply  
voltages should return to normal.  
5. Be sure the video selector switch on the  
SD3006 is in the proper position when you  
check out the video outputs. In the left  
position you get composite and S video. In  
the right position you get component video.  
6. If the color difference cables are reversed the  
picture information is present, but the color  
has a blue tint.  
7. Putting the luminance cable in the wrong  
connector causes a very visible sync problem.  
8. A dirty disc can cause playability problems,  
.so be sure the disc is clean. Use a soft cloth  
to clean a disc. Refer to the cleaning instruc-  
tions in the service manual.  
Front Panel Checks  
1. Using a meter check pin 2 for the ever 5 volts,  
pin 8 for the -24 volts, pin 9 for the F+, and  
pin 10 for the F-.  
Power Supply Checks  
1. Push the power button and see if the red  
power led comes on.  
2. Check the dc voltages on pins 2, 3, 4, 5, 6, 7,  
8, 12, 13, and 14 of CN801.  
2. Using a scope, check the front panel reset  
signal at pin 1 of CN602 when AC is applied  
to the player. The signal goes high when  
power is applied to the player.  
3. If any of these voltages are improper or  
missing, or the power LED does not come on,  
unplug the power supply from the main board  
and jumper pins 2 and 3 on CN801.  
3. To check the communications between the  
main board and the front panel, connect  
channel 1 of the scope to the FSTBX signal  
on pin 7 of CN602. Communications be-  
8
9
 
tween the 2 boards occur during low transi-  
tions.  
4. Using pin 7 as the reference, monitor the  
clock signal on pin 6 of CN602. There are  
eleven negative clock pulses during 1 low  
cycle of the FSTBX signal.  
5. Check the DSPSO signal on pin 5 of CN602.  
This is the serial information going to the  
front panel.  
6. Check the DSPSI signal on pin 4 of CN602.  
This is the serial information coming from the  
front panel. Again, notice how it changes  
when a disc is playing.  
volts peak to peak.  
3. Clean the objective lens with a cotton swab  
and alcohol if the signal is low.  
4. Recheck the RF signal, and if it is still low  
replace the laser slide assembly.  
5. Another way to check the power of the laser  
is with a laser power meter. A new laser  
should measure about 0.2 milliwatts.  
6. You can also visually check the laser during  
power on. However, be sure not to look  
directly into the laser.  
7. The RF signal for a CD is checked at TP501.  
It also looks like normal eye pattern, but its  
frequency is lower than that of the DVD.  
Normally it is about 1.6 volts peak to peak.  
7. If the signals are missing or improper, remove  
power from the player, and gently pull the  
flex cable out of CN602.  
8. Measure the clock signal, the DSPSO signal,  
and the DSPSI signal using the FSTBX signal  
as a reference. All of the signals are present  
except the DSPSI signal.  
Focus and Tracking Checks  
1. For a focus problem, check the focus error  
signal at TP504. Cycle the power off then on  
to see the operation of the focus error signal.  
Gently tap the side of the player to check the  
operation of the signal. If the signal is miss-  
ing or improper, the main board is most likely  
at fault.  
2. Play a CD and check the focus error signal at  
TP504.  
3. For a tracking problem, check the tracking  
error signal at TP507. Cycle the power off  
then on to see the operation of the tracking  
error signal. Gently tap the side of the player  
Laser Checks  
1. Check the DVD RF signal at TP502. The  
signal should look like a normal eye pattern  
with a peak to peak voltage of about 2.7 volts  
or higher. This peak to peak measurement  
varies from player to player and decreases as  
the laser ages.  
2. Check the differential RF signals at pins 16  
and 17 of CN501. They should be about 0.5  
10  
11  
 
to check the operation of the signal. If the  
signal is missing or improper, the main board  
is most likely at fault.  
unloaded.  
12. For problems associated with the feed motor  
or the spindle motor check the signals on  
connector CN502.  
13. Check the feed motor drive signals at pins 1  
and 2 of CN502. They are easiest to see  
when the power is cycled on and the player is  
put in the times 8 scan speed.  
14. These signals can also be checked unloaded;  
however, the drive signal goes to 4 volts DC  
when AC is applied and power is turned on.  
If the dc signal is present, the drive signal  
from the main board is good.  
4. Play a CD and check the tracking error signal  
at TP507  
5. Check for a focus or tracking problem at pins  
1, 2, 3, and 4 of CN501. These are the focus  
and tracking drive signals going to the laser  
slide assembly. You should see an ac signal  
riding on about 4 volts dc.  
6. If the drive signals are being loaded down,  
remove power from the player and unplug the  
flex cable to CN501.  
7. Plug the player in and turn on the power  
while monitoring pin 1 of CN501. The drive  
signal rises to 4 volts dc if it’s good. This  
also applies to the other drive signals on pins  
2, 3, and 4.  
8. For DVD tracking problems check the track-  
ing error signals going to the main board on  
pins 12, 13, 14, and 15 of CN501.  
15. To check the feedback from the feed motor  
hall switches, monitor pins 5, 6, 7, and 8 of  
CN502 while cycling power and playing a  
disc in times 8 scan.  
16. If a disc won’t play you can still check the  
hall switches, turn the power off and push the  
slide away from the spindle motor. Then turn  
the power on and monitor the signals as the  
slide moves back to its default position.  
17. The dc drive voltage for the feed motor hall  
switches is monitored at pin 3.  
9. For CD tracking problems check the tracking  
error signals going to the main board on pins  
ten and eleven of CN501.  
10. If the focus coil does not move up and down  
or the laser does not come on, check for plus  
5 volts on pin 19 of CN501 and plus 2 volts  
on pin 20 of CN501.  
18. The spindle motor drive signals are checked  
at pins 17, 18, and 19. They are easiest to see  
when the power is cycled on and the player is  
put in the times 8 scan speed.  
11. If the voltages are missing or improper,  
unplug the flex cable and measure them  
19. These signals can also be checked unloaded;  
however, you can only see a momentary  
12  
13  
 
attempt at the drive signal coming on.  
20. Check the feedback from the spindle motor  
hall switches by monitoring pins 9 through 13  
and pin 15 while cycling power and playing a  
disc in times 8 scan.  
21. Check the spindle motor hall switches manu-  
ally by rotating the spindle motor with your  
finger while monitoring pins 9 through 13 and  
pin 15.  
color difference outputs on the back of the  
player.  
3. Connect channel 1 of the scope to the lumi-  
nance output on pin 1 of CN302.  
4. Connect channel 2 of the scope to the Cr  
signal output on pin 3, and ensure it is in sync  
with the luminance signal and the proper peak  
to peak voltage.  
5. Connect channel 2 of the scope to the Cb  
signal output on pin 5, and ensure it is in sync  
with the luminance signal and the proper peak  
to peak voltage.  
22. The dc drive voltages for the spindle motor  
hall switches are checked at pins 14 and 16.  
Loading Motor Checks  
1. Loading motor operation is checked at  
CN503.  
2. The loading motor drive signal on pin 1  
drives the tray out, and the loading motor  
drive signal on pin 2 pulls the tray in.  
3. The tray position switch signal at pin 3 is high  
when the tray is out, and low when the tray is  
in.  
6. If the player won’t switch video modes,  
monitor pin 7 while moving the switch. The  
pin is high in the composite video mode, and  
low in the component video mode.  
Summary  
1. If the problem is isolated to the main board or  
the laser slide assembly, replace the board or  
the slide assembly.  
4. The tray position switch signal at pin 4 is low  
when the tray is out, and high when the tray is  
in.  
2. Some parts on the laser slide assembly are  
replaced. These include the feed motor, the  
feed motor drive gears, and the hall switches.  
3. If the problem is isolated to any of the other  
boards, repair them to the component level.  
Color Difference Output Checks (CN302 -  
SD3006 Only)  
1. Play a test disc with a straight color bar  
pattern.  
2. Place the player in pause and switch to the  
14  
15  
 
CN801  
NC  
EVER 5V  
POWER ON  
+5V  
CN302  
Y/R OUT  
CN501  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
1
3
5
7
1
T+  
F+  
F-  
T-  
2
4
6
8
GND  
Cr OUT  
GND  
Cb OUT  
GND  
2
4
3
+9V  
+8V  
+5V  
+3V  
GND  
GND  
GND  
-24V  
F-  
5
CDPD  
GND  
LD  
6
NT/RGBX  
GND  
7
8
MON  
VOR  
FO  
9
CN602  
10  
12  
14  
16  
18  
20  
1
DSP - RESET  
EVER 5V  
GND  
11  
13  
15  
17  
19  
EO  
AO  
BO  
CO  
2
3
5
7
9
4
6
DSPSI  
DSPSO  
DSPCK  
FSTBX  
-24V  
F+  
DO  
RFP  
RFN  
GND  
VCC  
VREF  
CN502  
8
1
FMP  
FMN  
ADL  
GND  
HO2N  
HO1N  
HO1P  
HO2P  
V+  
F+  
F-  
2
4
10  
3
21 LAYER  
5
6
CN503  
7
1
3
5
LDMN  
LDMP  
TCLS  
TCPN  
GND  
8
2
4
9
10  
12  
14  
16  
18  
W+  
U+  
W-  
11  
13  
15  
17  
19  
V-  
H-  
U-  
H+  
U
V
W
16  
17  
 

TDK Network Card HHM Series HHM2411 User Manual
Tekram Technology Network Card DC 820B User Manual
Tektronix Telescope TFS3031 User Manual
Toshiba Power Supply 15 80KVA User Manual
Toshiba Power Supply 1500 User Manual
Toshiba Projector TDP MT400 User Manual
Toshiba TV Antenna 8M26C User Manual
Vermont Casting Outdoor Fireplace ODSR36A User Manual
Waterpik Technologies Electric Toothbrush WP 60 User Manual
Weber Gas Grill 55008 User Manual