Adjustments; Vdd Voltage Adjustment - Teac TASCAM DA-P20 Service Manual

9. ADJUSTMENTS
is VDD voltage adjustment ae ae Digital voltmenter
pe Linearity adjustment | Osciloscope,Test tape TY-7251 | | Osciloscope,Test tape TY-7251 | tape TY-7251 .
Cylinder and clock pulse Oscilloscope, Test tape TY-7551
synchronism
| 4 [PLL adjustment —_ fe counter
oF REC ampere adjustment ee Oscilloscope, Test tape TY-7551
Test tape TY-30B
| 6 | Check for error rate a Gaeiisacope: f counter Test tape TY-7551
9-1. VDD adjustment _
{Checkpoints} Test pad VDD (MAPCB)
[Procedure] (1) PW - Turn it.on.
(2) Adjust VR1 so that VDD test pad is 5.1V + 0.05V.