Service Manuals, User Guides, Schematic Diagrams or docs for : TOSHIBA TV toshiba_vtw-2186_605

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SERVICE MANUAL


COLOR TELEVISION/
VIDEO CASSETTE RECORDER/
DVD VIDEO PLAYER

           VTW2186
                       SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES                                      6. AVOID AN X-RAY
  As for the places which need special attentions,        Safety is secured against an X-ray by consider-
  they are indicated with the labels or seals on the      ing about the cathode-ray tube and the high
  cabinet, chassis and parts. Make sure to keep the       voltage peripheral circuit, etc.
  indications and notices in the operation manual.        Therefore, when repairing the high voltage pe-
                                                          ripheral circuit, use the designated parts and
2. AVOID AN ELECTRIC SHOCK
                                                          make sure not modify the circuit.
  There is a high voltage part inside. Avoid an           Repairing except indicates causes rising of high
  electric shock while the electric current is            voltage, and it emits an X-ray from the cathode-
  flowing.                                                ray tube.
3. USE THE DESIGNATED PARTS                              7. PERFORM A SAFETY CHECK AFTER
  The parts in this equipment have the specific             SERVICING
  characters of incombustibility and withstand
                                                           Confirm that the screws, parts and wiring which
  voltage for safety. Therefore, the part which is
                                                           were removed in order to service are put in the
  replaced should be used the part which has
                                                           original positions, or whether there are the
  the same character.
                                                           portions which are deteriorated around the
  Especially as to the important parts for safety
                                                           serviced places serviced or not. Check the
  which is indicated in the circuit diagram or the
                                                           insulation between the antenna terminal or
  table of parts as a     mark, the designated
                                                           external metal and the AC cord plug blades.
  parts must be used.
                                                           And be sure the safety of that.
4. PUT PARTS AND WIRES IN THE                              (INSULATION CHECK PROCEDURE)
   ORIGINAL POSITION AFTER
                                                           1. Unplug the plug from the AC outlet.
   ASSEMBLING OR WIRING                                    2. Remove the antenna terminal on TV and turn
  There are parts which use the insulation                    on the TV.
  material such as a tube or tape for safety, or           3. Insulation resistance between the cord plug
  which are assembled in the condition that                   terminals and the eternal exposure metal
  these do not contact with the printed board.                [Note 2] should be more than 1M ohm by
  The inside wiring is designed not to get closer             using the 500V insulation resistance meter
  to the pyrogenic parts and high voltage parts.              [Note 1].
  Therefore, put these parts in the original               4. If the insulation resistance is less than 1M
  positions.                                                  ohm, the inspection repair should be
                                                              required.
5. TAKE CARE TO DEAL WITH THE
   CATHODE-RAY TUBE                                        [Note 1]
                                                             If you have not the 500V insulation
  In the condition that an explosion-proof cathode-          resistance meter, use a Tester.
  ray tube is set in this equipment, safety is
  secured against implosion. However, when                 [Note 2]
  removing it or serving from backward, it is                External exposure metal: Antenna terminal
  dangerous to give a shock. Take enough care to                                      Earphone jack
  deal with it.


                                  HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
   The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
   found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
   You can find it in your SERVICE MANUAL.




                                                  A1-1
                          WHEN REPLACING DVD DECK
[ When the removal of the DVD Deck ]
 Before removing Pick Up PCB and DVD PCB connector, make the short circuit on the position as
 shown Fig. 1 using a soldering. If you remove the DVD Deck with no soldering, the Laser may be
 damaged.

[ When the installation of the DVD Deck ]
 Remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD
 PCB connector.
                                                                               Pick Up PCB




                                                     Make the sort circuit
                                                     using a soldering.

                                            Fig. 1




                                                 A1-2
           TAPE REMOVAL METHOD AT NO POWER SUPPLY
1. Remove the TV/DVD/VCR block from the main unit and the Fig. 1 below can be seen.
   (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)
2. Remove the screw 1 of the Deck Chassis and remove the Loading Motor.
3. Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape.
   (Refer to Fig. 2)
4. Rotate the Clutch Ass'y either of the directions to wind the Video Tape in the Cassette Case.
5. Repeat the above step 3~4. Then take out the Video Cassette from the Deck Chassis. Be careful not to
   scratch on the tape.

                                                          Loading Motor

                                                          Screw 1


                                                                                                 Capstan DD Unit
                                                   Pinch Roller Cam




                  Insert hole for screw driver              Main Cam
                                                                                                      Clutch Ass'y


                                                                          Main Chassis (Front Side)
                     Fig. 1
                                                                                 Fig. 2




           DISC REMOVAL METHOD AT NO POWER SUPPLY
1. Remove the Back Cabinet and TV//DVD/VCR Block. (Refer to item 1 of the DISASSEMBLY
   INSTRUCTIONS.)
2. Rotate the Main Gear in the direction of the arrow by hand.
   (Refer to Fig. 1)
3. Draw the Tray.
                                  Main Gear                    DVD Deck




                                                 Fig. 1




                                                   A1-3
                              PARENTAL CONTROL - RATING LEVEL
                                       4 DIGIT PASSWORD CANCELLATION
If the stored 4 digit password in the Rating Level menu needs to be cancelled, please follow the steps below.
1. Turn Unit ON.
2. Press and hold the '7' key on the remote control unit.
3. Simultaneously press and hold the 'STOP' key on the front panel.
4. Hold both keys for more than 3 seconds.
5. The On Screen Display message 'PASSWORD CLEAR' will appear.
6. The 4 digit password has now been cleared




                                                        TRAY LOCK
Tray cannot be opened by setting the Tray Lock, please follow the steps below.
1.   Turn Unit ON.
2.   Set the DVD to the Stop Mode.
3.   Press and hold the '9' key on the remote control unit.
4.   Simultaneously press and hold the 'STOP' key on the front panel.
5.   Hold both keys for more than 3 seconds.
6.   Press the OPEN/CLOSE key on the front panel to check the Tray Lock setting.
NB: No indications on the screen when the Tray Lock is setting.

To unlock the Tray Lock, please follow the steps below.
1.   Turn Unit ON.
2.   Set the DVD to the Stop Mode.
3.   Set the VOLUME to minimum.
4.   Press and hold the 'REC/OTR' button on the front panel.
5.   Simultaneously press and hold the '4' key on the remote control unit.
6.   Hold both keys for more than 2 second.
7.   The On Screen Display message 'INITIALIZE7 COMPLETE' will appear.
8.   The Tray Lock has now been cleared.
NB: The above procedure will reset ALL of the player's settings to the default factory state.




                                      PREPARATION OF SERVICING

The laser diode used for a pickup head may be destroyed with external static electricity.
Moreover, even if it is operating normally after repair, when static electricity discharge is received at the
time of repair, a life of product may become short.
Please perform the following measure against static electricity, be careful of destruction of a laser diode
enough at the time of repair, and work.




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