32
9. Transitional Operation Confirmation (Review to Play)
(Fig. 18)
Test Points:
CTL Pulse Test Pin
Path Adj. Fixture
Envelope Test Pin
Path Adj. Fixture
Observe:
Oscilloscope
Adjust:
VR Control
Path Adj. Fixture
S/T Guide Rollers
Transport Mech.
1).Connect the Path Adj. Fixture to PT01 on the Main circuit
board.
2).Play back the Alignment Tape (color bar alignment).
3).Connect the channel-1 scope probe to the CTL pulse test pin
on the Path Adj. Fixture.
4).Connect the channel-2 scope probe to the envelope test pin on
the Path Adj. Fixture. Externally trigger the scope using the
SW pulse test pin on the Path. Adj. Fixture.
5).Adjust the VR Control on the Path Adj. Fixture so that the
envelope signal of the test tape is maximum.
6).Operate VCR in the Review mode for approximately 15 sec-
onds and then change the mode to the Play mode.
7).Confirm that Within three (3) seconds the envelope waveform
is recovered when the mode changes from Review to Play
mode.
8).If the waveform is not recovered within the three (3) seconds
when the mode changes from Review to Play mode, make
sure that the tape runs smoothly at the lower Flange of T
Guide Post. And slightly adjust the S/T Guide Rollers to
amend the problem.
Fig. 16 Fine Adjustments of Drum Entrance/Exit
Envelopes
Fig. 17 Fine Adjustment of Envelopes at Drum
Entrance/Exit Parts
Fig. 18 Transitional Operation confirmation
(Review to Play)
Summary of Contents for DV-K884N-SJ
Page 35: ...34 AC001 K884NZ SJ M K884NZ SG M only...
Page 36: ...35...
Page 37: ...36...
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Page 66: ...65 ELECTRICAL ADJUSTMENTS Fig 1 Circuit Board Location...
Page 99: ...98 INTERCONNECT WIRING DIAGRAM K884N K784N K804N Hi Fi INTERCONNEC WIRING DIAGRAM REV 1 97 2 5...
Page 100: ...99 POWER SUPPLY SCHEMATIC DIAGRAM FREE VOLTAGE K884NY SJ M K884NZ SJ M K884NZ SG M...
Page 102: ...101 PRE AMP SCHEMATIC DIAGRAM K884N K784N 804N Hi Fi PREAMP SCHEMATIC DIAGRAM REV 1 97 2 5...
Page 103: ...102 VIDEO AUDIO SCHEMATIC DIAGRAM K884N K784N K804N...
Page 104: ...103 PIF MPX SCHEMATIC DIAGRAM K884N K784N K804N Hi Fi PIF MPX SCHENATIC DIAGRAM REV 1 97 2 5...
Page 105: ...104 TIMER SYSCON SCHEMATIC DIAGRAM K884N K784N K804N...
Page 106: ...105 Hi Fi AUDIO SCHEMATIC DIAGRAM K884N K784N K804N Hi Fi AUDIO SCHEMATIC DIAGRAM REV 1 97 2 5...
Page 107: ...106 POWER SUPPLY BLOCK DIAGRAM FREE VOLTAGE K884NY SJ M K884NZ SJ M K884NZ SG M...
Page 108: ...107 POWER SUPPLY BLOCK DIAGRAM 120V ONLY K884N SJ K884N JJ K884N SG K784N SJ K784N JJ K784N SG...
Page 109: ...108 PRE AMP BLOCK DIAGRAM K884N K784N K804N Hi Fi PREAMP BLOCK DIAGRAM REV 1 97 2 5...
Page 110: ...109 VIDEO AUDIO BLOCK DIAGRAM K884N K784N K804N Hi Fi VIDEO BLOCK DIAGRAM REV 1 97 2 5...
Page 111: ...110 PIF MPX BLOCK DIAGRAM K884N K784N K804N Hi Fi PIF MPX BLOCK DIAGRAM REV 1 97 2 5...
Page 113: ...112 Hi Fi AUDIO BLOCK DIAGRAM K884N K784N K804N AUDIO BLOCK DIAGRA REV 1 97 2 5...