AVD-K700P
5-2. Tape Path Check between Pinch Roller andtravel it stably to ensure there is no crumbling or fold-
Take up Guide (Check in the Rev Mode)ing of the tape.
1) Check the tape pass status between the pinch roller and
the take-up guide.(Check there is crumpling of the tape1) 2) Check there is folding of the tape at the bottom or top
pass and folding of the take-up guide.)of the take-up guide in cutting-off the REV mode
1) (1) When holding of the take-up guide bottom occurs
Turn the tilt adjusting screw (C) clockwise and travel itCAUTIONS
stably to ensure there is no crumbling or folding of theIf the RF waveform is changed after adjusting the A/C head,
tape. perform fine adjustment to ensure the RF waveform is flat-
1) (2) When holding of the take-up guide top occurstened.
Turn the tilt adjusting screw (C) anti-clockwise and
5-3. Fine Adjustment (Azimuth Adjustment)
Fixtures and tools usedConnection positionVCR (VCP) statusAdjustment position
Y OscilloscopeY Audio Output JackY Play the standard test Y Azimuth Adjusting
Y Standard test tapeY Tape, 1KHz, 7KHz.Screw (A)
(only for SP)Y Height Adjusting Screw
Y Driver (+) Type ? 4(B)
Adjustment Procedure1KHz7KHz
1) Connect the probe of Oscilloscope to the audio output
jack.
2) Ensure that Audio 1KHz, 7KHz output is flattened at the
maximization point by adjusting the Azimuth adjustingA: MaximumB: Minimum
screw (A).Fig. C-5-4
6. X-distance Adjustment
Purpose of adjustment : To maintain compatibility with other VCR (VCP).
Fixtures and tools usedConnection positionVCR (VCP) statusAdjustment position
Y OscilloscopeY CH-1: PB RF EnvelopeY Play the standard test
Y Standard test tapeY CH-2: NTSC ; SW 30Hztape.LeftGrove of Base A/C
(only for SP)PAL:SW 25Hz
Y Driver (+) Type ? 4Y Head switching output
pointRight
Y RF Envelope output
point
Adjustment ProcedureConnection Diagram
1) After releasing the auto tracking, lightly turn the fixingX-distance Adjusting Hole
screw. Turn the (+) type driver (? 3 ~ ? 4) on the X-dis-
Fixing Screw
tance adjusting hole to the right or left. Adjust the RF
envelope level to the maximum point and then fix the fix-Tilt Adjusting Screw (C)Azimuth
ing screws.Adjustment
2) For the 31mm head, adjust it with the SP tape recordedScrew(A)Height Adjusting
in the width of 31mm since the head travels on the tapeScrew (B)
track only for SP with the width of 58mm.Fig. C-6OSCILLOSCOPE
RF ENVELOPE OUTPUT POINT
CH-1 CH-2
HEAD RF SWITCHING OUTPUT POINT
37 |
ACEC
