Recording Chroma Level Check (Ma-335 Board); Playback Level Check (Ma-335 Board); Audio System Adjustment; Ace Head Adjustment - Sony SLV-M10HF Service Manual

2-4-4. Recording Chroma Level Check
(MA-335 Board)
Mode Recording (SP)
Signal Color bar
IC201 pin !¢
Measurement point
Measuring instrument Oscilloscope
Specified value A=450 ± 70mVp-p
[Check Method]
1) Confirm the amplitude of recording chroma level becomes the
specified value.
Fig. 6-2-9.

2-4-5. Playback Level Check (MA-335 Board)

Mode Playback
Signal Alignment Alignment tape : SP mode color bar
portion
Measurement point Video LINE OUT terminal
Measuring instrument Oscilloscope
Specified value A=1.0 ± 0.1Vp-p (75Ω terminated)
[Check Method]
1) Check that the playback level satisfies the specified value.
White (100%)
H
Fig. 6-2-10.
2-5.
• For the adjustment of the audio system, perform in the SP mode
if there is no special notes. Use the alignment tape.
[Connecting Instruments]
Audio
oscillator
A
• Adjust in the SP mode if there is no special indications.
• Perform the adjustment setting the switch on the following
positions.
• INPUT SELECT switch ............................................ LINE 1
[Adjustment Method]
1.
2.
3.
4.

2-5-1. ACE Head Adjustment

Refer to the VHS mechanical adjustment manual
MECHANISM)(9-921-647-11).

2-5-2. E-E Output Level Check

Mode
Signal
Measurement point
A
Measuring instrument
Specified value
[Check Method]
1)
2)
6-5

AUDIO SYSTEM ADJUSTMENT

Audio line OUTPUT L/R
Audio line INPUT L/R
600 Ω
Attenuator
Fig. 6-2-11.
ACE head adjustment.....Refer to the VHS mechanical
adjustment manual (S MECHANISM)(9-921-647-11).
E-E output level check

Overall Output level and distortion factor check

Overall noise level check.
E-E
400Hz, –7.5dBs : CJ570
CJ570
Audio level meter
–7.5 ± 2dBs
Input signal of 400Hz and –7.5dBs to the CJ461 L/R.
Check that the audio output level is –7.5 ± 3dBs.
Audio level
meter
or
distortion
meter
47 k Ω
VTR
(S