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 K50
Page 4: ...3 1 2 1 WIRE DIAGRAM 1 2WIREDIAGRAM...
Page 8: ...7 2 1 2 PARTS LOCATION OF FRONT LOADING ASS Y A TOP VIEW B FRONT VIEW...
Page 38: ...37 6 EXPLODED VIEW AND PARTS LIST 6 1 EXPLODED VIEW OF DECK ASS Y TOP VIEW...
Page 39: ...38 6 2 EXPLODEDVIEWOFDECKASS Y BOTTOMVIEW...
Page 40: ...39 6 3 EXPLODEDVIEWOFF LASS Y...
Page 41: ...40 D0040 D0020 D0050 D0010 D0080 D0090 D0060 D0070 D0040...