40
9.4.
Mechanical Adjustment Procedures
9.4.1.
Adjustment item
9.4.2.
Adjustment procedures
Pay attention, because the adjustment method is different from this machine.
l
Linearlty adjustment & BER value confirmation
1. Remove the mechanism adjustment cover of this machine as shown in Fig. D1.
2. Remove the front case unit. (Refer to Disassembly Procedures.)
3. The enbelope detection spcial tool board (VFK1641) is connected to this machine as shown in Fig. D2 and D3.
Note:
Be careful not to damage when the Passive Probe is connectied to the connection terminal of Main P.C.B..
It exists the possibility of the damage.
4. The enbelope detection spcial tool board is connected to oscilloscope as shown in Fig. D2 and D3.
Connect the AV Jack of this machine and the oscilloscope by using the Multi cable.
5. The post is adjusted with the post driver(VFK1899) so that recycles the normal tape which recorded NTSC signal and the
detection wave-link become a flat as shown in Fig. D4.
*At the time of the clyinder unit exchange unnecessary.
6. The post is adjusted with the post driver so that recycles a alignment tape(VFM3110EDS) and the detection wave-link
become a flat once again.
7. Recycling the tape that video-taped it wirh this machine after adjustment, the BER value is confirmed withthe item of the BER
the item of the BER confirmation of expert soft inside.
Fig. D1
Item
Adjustment at the time of the part exchange
Half finished goods mechanism
Clyinder
Remarks
Linearlty adjustment
&
BER value confirmation
Summary of Contents for NV-GS500EG
Page 9: ...9 4 Specifications...
Page 11: ...11...
Page 18: ...18 Fig D2 Fig D3 Fig D4 Fig D5...
Page 19: ...19 Fig D6 Fig D7 Fig D8 Fig D9...
Page 20: ...20 Fig D10 Fig D11 Fig D12 Fig D13...
Page 21: ...21 Fig D14 Fig D15 Fig D16 Fig D17...
Page 22: ...22 Fig D18 Fig D19...
Page 23: ...23 Fig D20 Fig D21 Fig D22 Fig D23...
Page 24: ...24 Fig D24 Fig D25 Fig D26 Fig D27...
Page 25: ...25 Fig D28 Fig D29 Fig D30 Fig D31...
Page 26: ...26 Fig D32...
Page 28: ...28 Fig M3...
Page 29: ...29 Fig M4 Fig M5...
Page 30: ...30 Fig M6...
Page 37: ...37 Fig E2 Rough image of set up connection...
Page 41: ...41 Fig D2 Fig D3 Fig D4...
Page 65: ...S 23...
Page 67: ...S 25 2 4 s NV GS500 GS508 Series Front P C B Foil Side 6 4 4 4 4 4 4 4 4 3 3...
Page 74: ...S 32...
