Vhs) X-Value & Linearity (P2 And P3 Posts) - Panasonic DMR-ES30VGN Service Manual

DMR-ES30VGN / DMR-ES30VGC / DMR-ES30VEE
PG SHIFTER AUTOMATIC ADJUSTMENT SELF-DIAGNOSIS INDICATION
F20
F21
F22
F23
NOTE:
When DD Cylinder was replaced, the Tape Interchangeability adjustment (X-Value Adjustment, P2 and P3 Posts Adjustment)
shown below should be performed after the PG Shifter Automatic Adjustment.
17.2. (VHS) X-VALUE & LINEARITY (P2 and P3 Posts) ADJUSTMENT
NG1 in the PG Shifter Automatic Adjustment
(The cylinder rotation is unstable during the automatic adjustment.)
NG2 in the PG Shifter Automatic Adjustment
(The vertical sync signal is lacked while over 5 seconds on the alignment tape.)
NG3 in the PG Shifter Automatic Adjustment
(The installing position of Heads to the cylinder is our of specification.
NG4 in the PG Shifter Automatic Adjustment
(The servo is not locked to the cylinder for more than 10 sec.)
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