65
@
PRIOR ADJUSTMENT OF THE PATH (ADJUSTMENT OF PG)
a. Connect the Channel 1(CH1) of the Oscilloscope to TP01-3(Head Switching Pulse) and CH2 to the VIDEO
OUT. And align the Tracking VR on the center.
b. Playback the Stairstep Signal Tape (DN 2).
c. Turn the PG Volume and adjust the gap between the Switching signal and the V-Sync signal to be 6.5H ± 0.5H.
#
ADJUSTMENT OF STRAIGHTNESS
Connect the Channel 1(CH1) of the Oscilloscope to the TP01-2(CTL Pulse) and CH2 to the TP01-4 (Envelope
Wave) and EXT.Trigger to the TP01-3 (Switching Pulse).
And then, playback the test tape of the SP Mode.
3-1) Height Adjustment for the Ace Head
a. adjust the Tracking VR to maximize the FM signal of the test tape.
b. Make the entrance and exit side Envelope Wave same as the Picture 5-6 by adjusting the S/T-Guide Roller
(
$
and
*
of Picture 5-1).
CH1
CH2
6.5H ±0.5H
PICTURE 5-5
a : Envelope Maximum Output
b : Envelope Minimum Output
a
b
b/a 0.75
PICTURE 5-6
Summary of Contents for AVP-7180
Page 16: ...3 2 CIRCUIT DIAGRAMS 15 1 CONNECTION DIAGRAM...
Page 17: ...16 2 POWER CIRCUIT DIAGRAM...
Page 19: ...18 3 SERVO SYSCON CIRCUIT DIAGRAM...
Page 21: ...20 4 VIDEO NOR AUDIO CIRCUIT DIAGRAM...
Page 23: ...22 5 Hi Fi PRE AMP CIRCUIT DIAGRAM...
Page 24: ...23 6 A V IN OUT CIRCUIT DIAGRAM...
Page 42: ...41 3 TIMING CHART OF S1 MECHA MECHANISM...
Page 46: ...45 B Deck bottom view...
Page 50: ...SKETCH OF JIGS AND TOOLS 49...
Page 70: ...4 6 EXPLODED VIEW OF DECK AREA AND PARTS LIST 69 1 EXPLODING VIEW OF THE DECK...
Page 71: ...70...
Page 74: ...AUDIOVOX SPECIALTY MARKETS CO LP 23319 COOPER DR ELKHART IN 46514 219 266 1886...
