Panasonic AG513F - COMBINATION VCR/TV, Service Manual

Page: 59 / 156

1. Enter EVR PG Shifter Adjustment mode, refer to " HOW TO ENTER
EVR PG SHIFTER ADJUSTMENT MODE ."
2. Connect the channel-1 scope probe to TP3001 and the channel-2
scope probe to TP6205. Used TP6205 as a trigger.
3. Adjust value so that the trailing edge of the head switching pulse
is placed 6 H±1 H (0.38 ms±0.06 ms) before the start of the vertical
sync pulse.
4. Release EVR PG Shifter Adjustment Mode.
The adjusted value will be written to Memory IC (IC6004).
Fig. E5
7.3.6. SUB CONTRAST ADJUSTMENT
Purpose:
To set the optimum sub contrast level.
Symptom of Misadjustment:
The picture is too dark or too light.
Test Point :
Pin 5 of P6001 (TV/VCR Main C.B.A.) or TP49 (CRT C.B.A.)
Adjustment :
SUB CONTRAST (EVR)
Specification :
3.0 V[p-p]±0.1 V[p-p]
INPUT :
Video Input Jack,
Crosshatch Pattern Signal 1 V[p-p]
(75 terminated)
59