Sony VX-14MW1U Service Manual page 67

G. LINEARITY ADJUSTMENT
TEST POINTS
MEASURING EQUIPMENT
ADJUSTMENT
a. Connect the PATH ADJ. FIXTURE to PT01 of 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. Adjust the VR CONTROL of the PATH ADJ. FIXTURE for maximum envelope signal output of the
alignment tape.
f. Adjust the S/T GUIDE ROLLER until the envelope signal waveforms of the entrance and exit sides are as
shown in Fig. 5-7.
S/W PULSE TEST PIN
ENVELOPE TEST PIN
OSCILLOSCOPE
VR CONTROL
S/T GUIDE ROLLER
Fig. 5-7 LINEARITY ADJUSTMENT
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PATH ADJ. FIXTURE
PATH ADJ. FIXTURE
PATH ADJ. FIXTURE
TAPE TRANSPORTING SYSTEM