Mhz Deviation Adjustment; (Mono Model); Bpf Fo Adjustment - Sony CCD-TRV32 Service Manual

4-4.

1.5MHz DEVIATION ADJUSTMENT

(MONO MODEL)

Purpose :
1.5MHz deviation adjustment. Error in this
adjustment value means loss of tape inter
change ability.
Mode Playback
Signal Alignment tape : For checking
operations
WR5-5CSP : PAL
WR5-5NSP : NTSC
Measurement AUDIO output terminal.
Measuring Instrument Oscilloscope, level meter
Adjustment Page F
Adjustment Address 2C
–7.5 ± 0.5dBs
Specified Value
Adjustment method:
Order Page Address
1 6 00
2 F 2C
3
4 6 00
4-5.

BPF fo ADJUSTMENT

Purpose :
Optimizes fo of BPF inside IC.
Adjustment error : Incorrect discrimination of monaural/stereo and
increase of noise at high output of audio
volume are resulted.
Mode Playback
Signal Alignment tape
〈MONO model〉
WR5-5CSP : PAL
WR5-5NSP : NTSC
〈STEREO model〉
WR5-9CS : PAL
WR5-9NS : NTSC
Measurement Point AUDIO output terminal (Left/Right)
Measuring Instrument Audio level meter
Adjustment Page F
Adjustment Address 2E
Specification Value Distortion : 1% or less.
Adjustment procedure:
Order Page Address
1 6 00
2
3 F 2E
4
5 6 00
Data
01 After setting the data, press the PAUSE button. (Preparation)
Change the data with the PLAY and STOP buttons, and adjust the 400Hz signal level to
specified value.
Press the PAUSE button.
00 After setting the data, press the PAUSE button. (End)
Data
01 After setting the data, press the PAUSE button. (Preparation)
Playback the 400Hz segment of the alignment tape.
Change data using PLAY and STOP buttons so that distortion factor is minimized.
Press the PAUSE button.
00 After setting the data, press the PAUSE button. (End)
Procedure
Procedure
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