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DECK MECHANISM ADJUSTMENT
5-2. Confirm that the Tape passes smoothly
between the Take-up Guide and Pinch
Roller(using a Mirror or the naked eye).
1)
Afetr completing Step 5-1.(Preliminary Adjustment),
check that the Tape passes around the Take-up Guide
and Pinch Roller without Folding or Curling at the Top or
Bottom.
(1) If Folding or Curling is observed at the Bottom of
the Take-up Guide then slowly turn the Tilt
Adjustment Screw(C) in the Clockwise directioin.
(2) If Folding or Curling is observed at the Top of it then
5-3. Precise Adjustment (Azimuth adjustment)
Test Equipment/ Fixture
• Oscilloscope
• Alignment Tape(SP)
• Screw Driver(+) Type 5mm
Adjustment Procedure
1) Connect the Probe of the Oscilloscope to Audio Output
Jack.
2) Alternately adjust the Azimuth Adjustment Screw(A) and
the Tilt Adjustment Screw(C) for Maximum Output of the
1Khz and 7Khz segments, while maintaining the flattest
Envelope differential between the two Frequencies.
TE
6. X-Value Adjustment
L 13942296513
Purpose: To obtain compatibility with other VCR(VCP) Models.
Test Equipment/ Fixture
• Oscilloscope
• Alignment tape(SP only)
• Screw Driver(+) Type 5mm
Adjustment Procedure
1) Insert the alignment tape, and press the + or - manual
tracking (channel) button once while "AUTO TRACKING"
is flashing on the screen to release auto tracking, and then
center the tracking.
2) Run the tape long enough for tracking to complete one
cycle.
3) Loosen the fixing screw, and move the A/C head base
assembly in the direction shown in the diagram, to find the
center of the peak so that the maximum envelope is avail-
able.
With this method, the 31-µm head can trace on the cen-
terof 58-µm track.
4) Tighten the A/C head base assembly fixing screw.
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Connection Point
• Audio output jack
Connection Point
• CH-1: PB RF Envelope
• CH-2: NTSC: SW 30Hz
PAL: SW 25Hz
• Head Swithching Output
Test Point
• RF Envelope Output Test
Point
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8
slowly turn the Tilt Adjustment Screw(C) in the
Counterclockwise direction.
NOTE:
Check the RF Envelope after adjusting the A/C Head, if
the RF Waveform differs from Fig. C-5-4, performs
Precise Adjustment to flat the RF Waveform.
Test Conditions
(Mechanism Condition)
• Play an Alignment Tape
1KHz, 7KHz Sections
1KHZ
A:Maximum
Q Q
3
6 7
1 3
1 5
Test Conditions
(Mechanism Condition)
• Play an Alignment Tape
Adjustment Diagram
X-Value Adjustment Hole
Fixed Screw
Azimuth Adjustment
Screw(A)
Connection Diagram
RF ENVELOPE OUTPUT TEST POINT
HEAD SWITCHING OUTPUT TEST POINT
co
.
71
9 4
2 8
Adjustment Point
• Azimuth Adjustment Screw(A)
• Height Adjustment Screw(B)
B:Maximum
Fig. C-5-4
0 5
8
2 9
9 4
2 8
Adjustment Point
Groove at the
Base A/C
Left
Tilt Adjustment Screw(C)
Height Adjustment Screw(B)
OSCILLOSCOPE
m
CH-1 CH-2
9 9
7KHZ
9 9
Right
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