33
H. DRUM ENTRANCE /EXIT (See Fig. 5-8, 5-9)
a. Connect the PATH ADJ. FIXTURE to PT01 the MAIN CIRCUIT BOARD.
b. Play back the ALIGNMENT TAPE (COLOR BAR SIGNAL).
c. Connect the channel-1 scope probe to the S/W PULSE TEST PIN of the PATH ADJ. FIXTURE.
d. Connect the channel-2 scope probe to the ENVELOPE TEST PIN of the PATH ADJ. FIXTURE.
e. When turning the VR CONTROL of the PATH ADJ. FIXTURE clockwise or counter-clockwisw, affirm
that the envelope thickness changes uniformly.
f. If the envelope is not uniform and regular, adjust the S/T GUIDE ROLLER.
TEST POINTS
S/W PULSE TEST PIN
PATH ADJ. FIXTURE
ENVELOPE TEST PIN
PATH ADJ. FIXTURE
MEASURING EQUIPMENT
OSCILLOSCOPE
ADJUSTMENT
VR CONTROL
PATH ADJ. FIXTURE
S/T GUIDE ROLLER
TAPE TRANSPORTING SYSTEM
DRUM ENTRANCE
DRUM EXIT
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Fig. 5-8 FINE TUNING OF THE ENVELOPE AT THE
DRUM ENTRANCE/EXIT (I)
Fig.5-9 FINE TUNING OF THE ENVELOPE AT THE
DRUM ENTRANCE/EXIT (II)
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 ...