Sanyo HV-DX300A, Service Manual

Page: 51 / 63

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K.Adjustment of the AUDIO AZIMUTH
a. Connect the AUDIO output JACK with an AUDIO
LEVEL METER.
b. Play back the ALIGNMENT TAPE
c. Check if the AUDIO output signal level is over : -9 ~-
3dBm.
d. If the requirement of “c” is not satisfied, readjust the
AZIMUTH SCREW of the AC HEAD until the AUDIO
output is maximum.(Fig. 5.4)
e. Repeat the process of “Adjustment of the Wave Form
of DRUM Entrance/Exit”
L. X-POSITION
a. Connect the PT01 on the MAIN CIRCUIT BOARD with
a PATH ADJ. FIXTURE.
b. Play back an ALIGNMENT TAPE
c. Connect the S/W PULSE TEST PIN on the PATH ADJ.
FIXTURE with a CHANNEL-1 SCOPE PROBE.
d. Connect the VIDEO OUT on the MAIN CIRCUIT
BOARD with a CHANNEL-2 SCOPE PROBE (1V/div).
e. Check if the ENVELOPE is maximum when the VR
CONTROL on the PATH ADJ. FIXTURE is in CENTER
f. If the requirement “e” is not satisfied, readjust the X-POSI-
TION by referring to subitem “E”(Adjustment of the X-
POSITION).
g. Repeat the process of subitem “F”(PLAYBACK PHASE
ADJUSTMENT).
AUDIO OUTPUT AUDIO OUTPUT JACK
AUDIO LEVEL METER
Test Point
Measurement Equipment
S/W PULSE TEST PIN PATH ADJ. FIXTURE
ENVELOPE TEST PIN PATH ADJ.FIXTURE
Measurement Equipment OSILLOSCOPE
VR CONTROL PATH ADJ.FIXTURE
S/T GUIDE ROLLER TAPE TRANSMISSION T SECTION
Test Point
Adjustment