Panasonic PV-V462, Service Manual

Page: 45 / 146

T = 6 H±0.5 H (0.38 ms±0.03 ms)
Mode :
SP Playback
Equipment :
Oscilloscope,
VHS Alignment Tape (VFMS0003H6),
TV monitor
1. Insert the VHS Alignment Tape. Then turn off the power. Enter
service mode by pressing and holding FF and CH DOWN buttons
on VCR together for more than 5 seconds in power off condition.
The power comes on.
2. Playback in SP mode. Then, press 100 button on the remote to
enter EVR PG SHIFTER ADJUSTMENT mode. PG ADJUSTMENT
screen will appear on the TV Monitor.
Fig. E2-1
3. Connect the channel-1 scope probe to TP3001 and the channel-2
scope probe to TP6205. Used TP6205 as a trigger
4. Adjust value so that the trailing edge of the head switching pulse
is placed 6 H±0.5 H (0.38 ms±0.03 ms) before the start of the
vertical sync pulse by pressing CH UP and CH DOWN buttons on
the remote control.
Fig. E2-2