DPX-3030/MP4030
ADJUSTMENT
" Setting for the unit condition as follows.
BALANCE/BASS/TREBLE/FADER : Center Position, DOLBY/LOUD/DSP : OFF
TUNER BAND : FM
No.ITEMINPUTOUTPUTTUNERALIGNMENTALIGN FORFIG
SETTINGSSETTINGS(RECEIVER)POINT
SETTINGS
FM TUNER SECTION
1 DISCRIMINATOR98.1MHz 0dbv,Connect a DCFM 98.1MHz T F/E (TU101)0V(a)
60db?, (ANTVoltmeter to TP
input)F/E (TU101)
TAPE DECK SECTION
1 CLEANING---PB Head, capstan, Clean the PB Haed,capstan and pinch roller using a-
pinch rollercotton swab slightly damped with alcohol
2 AZIMUTH (TapeMTT-902 Mirror-PLAYAzimuthPlaying the mirror tape in FWD mode, adjust the(b)
running condition) Tapeadjustment screwazimuth adjustment screw (A) and (B) so as to e
FWD (A), REV (B) liminate a curl at the guides on both ends of head
while looking in to the mirror tape. After that you can
adjust same manner for the REV side.
3 AZIMUTHTCC-153 10KHz, Connect the ACPLAYAzimuthAdjust the output to maximum and adjust the azimuth(b)
-10dbVoltmeter andadjustment screwadjustment screw for the Lissajours waveform pattern
Oscilloscope to priFWD (A), REV (B) of the oscilloscope to become close to a 45°straight
output terminalline.
4 PLAY BACK LEVEL TCC-130 400Hz,Connect the ACPLAYVR201A (L),388mV (-6dbs)(c)
(Dolby Level)DolbyVoltmeter toVR201B (R)Adjust the L/R channel for FWD side.
between DolbyAfter adjusting the FWD side, check the playback
level output andlevel for the REW side so that the playback lever are
GND.between 330mV to 480mV.
TUNER UNIT
MAIN PWB UNIT
TUNER UNIT
TU101
CASSETTE MECHANISM
(a) 0V
FWDTP
(b)DC voltmeter
TU
T
101
TO GND(c) 388mV
REV
VR201A VR201B
DOLBY Lch
LchRchAC voltmeter
Dolby LevelDOLBY Rch
MAIN PWB UNIT (foil side)
7 |
ACEC
