Panasonic NV-FJ6140PN, Service Manual

Page: 47 / 104

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.
2. Turn on the power and play back 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.
Fig. E2-2
47