28
5-2-(3). HEIGHT ADJUSTMENT OF A/C
HEAD
< When moving the A/C Head up >
1) Rotate the screw (A) counterclockwise until the wrinkle
appears on the lower edge of tape at P4 Post.
2) Rotate the screw (B) counterclockwise until the wrinkle
just disappears on the lower edge of tape at P4 Post.
3) Rotate the screw (C) counterclockwise until the audio
signal is maximized.
Fig.M10
< When moving the A/C Head down >
1) Rotate the screw (B) clockwise until the wrinkle appears
on the lower edge of tape at P4 Post.
2) Rotate the screw (A) clockwise until the wrinkle just
disappears on the lower edge of tape at P4 Post.
3) Rotate the screw (C) clockwise until the audio signal is
maximized.
Fig.M11
5-2-(4). FINE-ADJUSTMENT OF A/C
HEAD
(1) Connect the oscilloscope to the output of the
Head Amp as shown in Fig.M3.
(2) Playback the Alignment Tape.
(3) Make sure that the condition of the wrinkle at P4 Post. If
the condition of the wrinkle is out of specification, P4 Post
adjustment has to be performed as follows.
Turn the screw (A) counterclockwise until the wrinkle
appears on the lower edge of tape at P4 Post.
Turn screw (A) clockwise until the wrinkle disappears on
the lower edge of tape at P4 Post.
(4) Turn the screw (C) until the audio signal is maximized.
NOTE:
Make sure that the audio output does not increase when push
the upper and lower edges of tape around A/C Head.
Fig.M12
5-2-(5) ADJUSTMENT OF X-VALUE
(PREADJUSTMENT)
Equipment Required:
Fine Adjustment Gear Driver (VFK0330)
Specification: Less than 15msec.
(1) Connect the oscilloscope to the audio output and the
video output.
Both output signals should be fixed by the external trigger.
(2) Playback the Alignment Tape and set the tracking control
into center fix position.
(3) Adjust A/C Head position by the Fine Adjustment Gear
Driver (VFK0330) to meet the signal fault portion of the
audio output and the video output signals (Less than
15msec.).
(4) After meeting the signal fault portion, audio A/C Head
position by the Fine Adjustment Gear Driver (VFK0330)
until the video envelope is maximized.
Fig.M13
Summary of Contents for NV-HV61EE
Page 21: ...2 REMOVAL OF THE BACK PANEL Remove 2 Screws C Remove Screw D Unlock 4 Tabs E Fig D3 21 ...
Page 29: ...10 2 CASING PARTS SECTION 29 ...
Page 30: ...10 3 PACKING PARTS SECTION 30 ...
Page 31: ...11 REPLACEMENT PARTS LIST 31 ...
Page 41: ...C4537 ECJ2VC1H560G CHIP CAPACITOR 41 ...
Page 44: ...D2002 B0AAED000003 DIODE 44 ...
Page 47: ...Q1152 2SC3311ASA TRANSISTOR 47 ...
Page 49: ...R1502 ERJ3GEYJ273V CHIP RESISTOR 49 ...
Page 54: ...W519 ERJ3GEY0R00V CHIP JUMPER 54 ...
Page 109: ...4 1 3 PARTS NAME OF R4 MECHANISM Fig M2 ...
Page 139: ...34 ...
