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
5. After adjustment is completed, press REC button on the remote
control. Then " COMP " will appear on the TV monitor and adjusted
value will be written to Memory IC (IC6005).
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