Toshiba NTDVT006BK Panduan Servis - Halaman 7

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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.

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.

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.

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.

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.

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-.

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. 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-