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27
13VT-N200
CHECKING THE VIDEO SEARCH REWIND
BACK TENSION
• Remove the cassette housing control assembly.
• After short-circuiting TP7701 and TP7702 pro-
vided at the left on the main PWB, plug in the
power cord, then turn on the power.
• Checking
1. After pressing the play button, press the rewind but-
ton, and set the video search rewind mode.
2. Place the torque gauge on the take-up reel disk, and
turn it counterclockwise very slowly (one rotation every
2 to 3 seconds) and check that the torque is within the
set value 3.4 ± 1.5mN
⋅
m (35 ± 15gf
⋅
cm).
Pinch roller
Tension gauge
900 - 1,200g
Capstan shaft
Tension gauge adapter
Figure 1-12.
Torque gauge
Take-up reel disk
Notes:
Set the torque gauge securely on the take-up reel disk.
If it is not secure, the measurement will be incorrect.
CHECKING THE PINCH ROLLER PRESSURE
• Remove the cassette housing control assembly.
• After short-circuiting TP7701 and TP7702 pro-
vided at the left on the main PWB, plug in the
power cord, then turn on the power.
• Checking
Press the play button to set the playback mode.
CCW
500g
(T-120)
Weight to prevent
float (500g)
Figure 1-13.
Figure 1-14.
• Checking
1. Set a cassette tape, push the REC button to place the
unit in the SP record mode. Now check the tension
pole position.
1. Detach the pinch roller from the capstan shaft.
Do not separate excessively. Or the pinch lever and
pinch double action lever may disengage.
2. Engage the tension gauge adapter with the pinch
roller shaft, and pull in the arrow direction.
3. Gradually return the pinch roller, and measure the
pulling force when the pinch roller contacts the cap-
stan shaft.
4. Make sure that the measured value is within setting
0.9 to 11.8 N (900 to 1,200g).
CHECKING AND ADJUSTMENT OF TENSION
POLE POSITION
• Remove the cassette housing control assembly.
• After short-circuiting TP7701 and TP7702 pro-
vided at the left on the main PWB, plug in the
power cord, then turn on the power.
• Setting
1. Open the cassette tape (T-120), and fix with tape.
2. Set the cassette tape in loading state.
3. Put the weight (500g) on the cassette tape.
4. Make the adjustment with the beginning of a T-120
tape.
Содержание 13VT-N200
Страница 54: ...55 13VT N200 54 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H PWB A CHASSIS LAYOUT PWB C PWB B PWB D ...
Страница 55: ...57 13VT N200 56 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM OF TV SECTION ...
Страница 57: ...61 13VT N200 60 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë SERVO PROCESS BLOCK DIAGRAM ...
Страница 58: ...62 8 7 10 9 6 5 4 3 2 1 A B C D E F G H 13VT N200 Ë SYSTEM CONTROL BLOCK DIAGRAM 6 5 4 3 2 1 A B C D E F G H ...
Страница 59: ...63 17 16 19 18 15 14 13 12 11 10 13VT N200 Ë SAFETY DEVICE BLOCK DIAGRAM 6 5 4 3 2 1 A B C D E F G H ...
Страница 60: ...65 13VT N200 64 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë VIDEO SIGNAL FLOW BLOCK DIAGRAM ...
Страница 61: ...67 13VT N200 66 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H Ë AUDIO BLOCK DIAGRAM ...
Страница 62: ...69 13VT N200 68 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H OVERALL SCHEMATIC DIAGRAM ...
Страница 64: ...71 17 16 19 18 15 14 13 12 11 10 13VT N200 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit ...
Страница 65: ...73 13VT N200 72 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 1 Unit TV Section ...
Страница 66: ...75 13VT N200 74 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 2 Unit TV Section ...
Страница 68: ...79 13VT N200 78 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 3 Unit VCR Section ...
Страница 69: ...81 13VT N200 80 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 4 Unit VCR Section ...
Страница 71: ...83 13VT N200 6 5 4 3 2 1 A B C D E F G H PWB C POWER Unit Wiring Side ...
Страница 72: ...84 13VT N200 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Wiring Side ...
Страница 73: ...85 13VT N200 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Chip Parts Side ...