6-4
4-3. Normal Audio System Adjustment
• Make adjustment in the SP mode unless otherwise specified. Use
a normal VHS cassette for an adjustment tape.
• Set AUDIO MONITOR to normal.
4-3-1. ACE Head Adjustment
Refer to the VHS mechanical adjustment manual
(S
MECHANISM) (9-921-647-11).
4-3-2. E-E Output Level Check
[Adjustment purpose]
Confirm that the output level adjust the reference input is within the
specification.
Mode
E-E
Signal
400 Hz, –7.5 dBs
Measurement point
CJ561 L/R
Measuring instrument
Audio level meter
Specified value
–7.5 ± 2 dBs
[Check Method]
1)
Input signal of 400 Hz and –7.5 dBs to the CJ561 L/R.
2)
Check that the audio output level is –7.5 ± 2 dBs.
4-3-3. Frequency Response Check
[Adjustment purpose]
Confirm that the frequency characteristic is within the specification.
Mode
REC and PB (SP mode)
Signal
400 Hz, –17.5 dBs
7 kHz, –17.5 dBs
Measurement point
Audio output terminal
Measuring instrument
Audio level meter
Specified value
0 ± 3 dB
Note:
Tape path adjustment must have been completed.
[Confirmation Method]
1)
Supply a signal of 400 Hz, –17.5 dBs to both L and R channels
of Audio Line Input.
2)
Connect the audio level meter to the Audio Line Output.
3)
Adjust the attenuator so that the audio level meter will indicate
–17.5 dBs.
4)
Make recording in the SP mode.
5)
Set an audio line input signal to 7 kHz and make recording.
6)
Playback a recorded portion, and measure output levels at 400
Hz and 7 kHz.
7)
Confirm that the 7 kHz playback output level within a range of
the 400 Hz playback output level 0 ± 3 dB.
4-2. HiFi Switching Position Adjustment
(MA-341 Board)
[Adjustment Purpose]
To adjust the link of the A-ch and B-ch of the tape playback outputs.
To make the unit compatible with other tapes and units. If this
specification is not satisfied, the link will appear on the screen and
the screen will be disrupted, etc.
Mode
Playback
Signal
Alignment tape: SP color bar portion
Measurement point
CH1: Pin
1
of CN270 (HF ADJ)
CH2: Pin
3
of CN270 (RF SWP)
Measuring instrument
Oscilloscope
Adjusting element
REMOCON CH +/–
Specified value
B=minimize
[Adjustment Method]
1)
Check that “A H” is indicated on FL display.
2)
Adjust so that part B becomes minimized at CH +/–.
3)
Write data EEPROM by pressing PAUSE button.
4)
Check that “A H” indicator turns off.
5)
If “A H” indicator is still on, restart RF switching position
Adjustment from the beginning.
Fig. 6-2-5
B
CH1
HFADJ
CH2
RF SWP
Summary of Contents for POWER TRILOGIC SLV-L49 MX
Page 6: ...1 2 ...
Page 7: ...1 3 ...
Page 8: ...1 4 ...
Page 9: ...1 5 ...
Page 10: ...1 6 ...
Page 11: ...1 7 ...
Page 12: ...1 8 ...
Page 13: ...1 9 ...
Page 14: ...1 10 ...
Page 15: ...1 11 ...
Page 16: ...1 12 ...
Page 17: ...1 13 ...
Page 18: ...1 14 ...
Page 19: ...1 15 ...
Page 20: ...1 16 ...
Page 21: ...1 17 ...
Page 22: ...1 18 ...
Page 23: ...1 19E ...
Page 71: ......
Page 72: ......
Page 73: ......
Page 74: ......
Page 75: ......
Page 76: ......
Page 77: ......
Page 78: ......
Page 79: ......
Page 80: ......
Page 81: ......
Page 82: ......
Page 83: ......
Page 84: ......
Page 85: ......
Page 86: ......
Page 87: ......
Page 88: ......
Page 89: ......
Page 90: ......
Page 91: ......
Page 92: ......
Page 93: ......
Page 94: ......
Page 95: ......
Page 96: ......
Page 97: ......
Page 98: ......
Page 99: ......
Page 100: ......
Page 101: ......
Page 102: ......
Page 103: ......
Page 104: ......
Page 105: ......
Page 106: ......
Page 107: ......
Page 108: ......
Page 109: ......
Page 110: ......
Page 111: ......
Page 112: ......
Page 113: ......
Page 114: ......
Page 115: ......
Page 116: ......
Page 117: ......
Page 118: ......
Page 119: ......
Page 120: ......
Page 121: ......
Page 122: ......
Page 123: ......
Page 124: ......
Page 125: ......