29
B. ADJUSTMENT OF THE A/C HEAD ASS'Y
(TILT ADJUSTMENT)
a. Play back a T-120 Tape and check the running condition of
the TAPE at the lower flanges of the T GUIDE POST
ASS'Y
¤æ
in Fig. 5-1.
b. Adjust the A/C HEAD TILT SCREW untill the TAPE runs
stable as shown in Fig. 5-2
C. ADJUSTMENT OF THE AUDIO AZIMUTH
(See Fig.5-3)
a. Play back the ALIGNMENT CASSETTE TAPE
(NTSC: DN2 (SP, 7KHz), PAL: DP2 (SP, 6KHz))
b. Observe audio signals on an OSCILLOSCOPE.
c. Turn the A/C HEAD AZIMUTH SCREW to obtain the
maximum audio output signal (-9~-3dBm).
D. THE HEIGHT ADJUSTMENT OF A/C
HEAD
a. Play back a T-120 TAPE.
b. Make sure that the gap is 0.25mm between the lower end of TAPE and that of A/C HEAD.
c. When the gap is longer than 0.25mm, turn the A/C HEAD HEIGHT ADJUST NUT counter-clockwise.
When the gap is shorter than 0.25mm, turn it clockwise.
Repeat this procedure untill 0.25mm is obtained.
( )
( )
Fig. 5-2 A/C HEAD ASS'Y ADJUSTMENT
(TILT ADJUSTMENT)
Fig. 5-3 A/C HEAD ASS'Y
GAP
Fig. 5-4 A/C HEAD ASS'Y ADJUSTMENT (HEIGHT ADJUSTMENT)
TURN THE A/C HEAD TILT
SCREW TO THE DIRECTION
OF CW
TURN THE A/C HEAD TILT
SCREW TO THE DIRECTION
OF
CCW
Summary of Contents for GB14H3
Page 5: ...4 CIRCUIT BLOCK DIAGRAM ...
Page 12: ... 11 SCHEMATIC DIAGRAM ...
Page 13: ... 12 SCHEMATIC DIAGRAM ...
Page 14: ...13 EXPLODED VIEW 1 14H3 ...
Page 15: ...14 EXPLODED VIEW 2 14H4 ...
Page 16: ...15 EXPLODED VIEW 3 20H3 ...
Page 17: ...16 EXPLODED VIEW 4 20H4 ...
Page 18: ...17 EXPLODED VIEW 5 21H4 ...
Page 19: ......
Page 20: ......
Page 58: ...3 1 2 1 WIRE DIAGRAM 1 2WIREDIAGRAM ...
Page 62: ...7 2 1 2 PARTS LOCATION OF FRONT LOADING ASS Y A TOP VIEW B FRONT VIEW ...
Page 92: ...37 6 EXPLODEDVIEWANDPARTSLIST 6 1 EXPLODEDVIEWOFDECKASS Y TOPVIEW ...
Page 93: ...38 6 2 EXPLODEDVIEWOFDECKASS Y BOTTOMVIEW ...
Page 94: ...39 6 3 EXPLODEDVIEWOFF LASS Y ...
Page 95: ...40 ...
